Compare commits

..

271 Commits
0.5.6 ... 0.2.1

Author SHA1 Message Date
Jeremy Ashkenas
f1e024b5c8 CoffeeScript 0.2.1 2010-01-05 09:30:48 -05:00
Jeremy Ashkenas
4895e6ddc9 docs for arguments conversion 2010-01-05 09:29:10 -05:00
Jeremy Ashkenas
3d43c41a67 automatic conversion of arguments into arrays 2010-01-05 09:10:45 -05:00
Jeremy Ashkenas
0e645cce41 alright, done fiddling. CoffeeScript 0.2.0 2010-01-05 00:45:04 -05:00
Jeremy Ashkenas
4f564dec60 more docs 2010-01-05 00:34:18 -05:00
Jeremy Ashkenas
20144abe25 tweaking docs 2010-01-05 00:19:22 -05:00
Jeremy Ashkenas
a8631dcbaf more docs for 0.2 -- blocks and splats 2010-01-04 23:26:27 -05:00
Jeremy Ashkenas
f5cd6578b8 adding the complete underscore.coffee example to the docs 2010-01-04 22:51:02 -05:00
Jeremy Ashkenas
f1af50ee33 first pass at 0.2.0 docs 2010-01-04 22:19:45 -05:00
Jeremy Ashkenas
ad5e69d303 minor doc updates -- let's try pulling in the underscore test suite 2010-01-04 19:15:24 -05:00
Jeremy Ashkenas
7d800b5e5b removed the whole messy notions of looking downwards for returns or children -- ForNodes now peek at top-level status, and if they're being asked to return a value from the outside 2010-01-04 18:57:10 -05:00
Jeremy Ashkenas
f150011d9d nicer scope inspects 2010-01-04 09:43:50 -05:00
Jeremy Ashkenas
a09f807ce0 more underscore 2010-01-04 01:43:45 -05:00
Jeremy Ashkenas
6082b9dc36 putting in a special check for returns within array comprehensions -- not very nice 2010-01-04 01:06:31 -05:00
Jeremy Ashkenas
326904826d pretty amazing -- fully functional draft of underscore.js 0.5.2, all in CoffeeScript 2010-01-04 00:28:52 -05:00
Jeremy Ashkenas
3f30712ca1 fixing a nasty little bug with not dup'ing a string in Scope.rb, causing later functions to start their free_variables where previous functions left off, because they shared their ancestor's @temp_variable string 2010-01-04 00:16:38 -05:00
Jeremy Ashkenas
e9b72ee955 more underscore examples raised a slight bug with a lexing ambiguity between leading whens (in switches), and trailing whens (in comprehensions) -- made two different tokens to distinguish them 2010-01-03 22:25:38 -05:00
Jeremy Ashkenas
7be3b8edac mo' expression examples 2010-01-03 19:08:41 -05:00
Jeremy Ashkenas
3daac200e5 -- 2010-01-03 19:00:08 -05:00
Jeremy Ashkenas
f77877d7eb adding a statement-as-expression test, and returning null from while loops, if asked 2010-01-03 18:58:34 -05:00
Jeremy Ashkenas
536bdd2107 updating fixtures -- all tests now pass -- back to master 2010-01-03 18:49:00 -05:00
Jeremy Ashkenas
0093455d29 logic error in Expressions was causing over-compilation by a factor of the depth of the tree 2010-01-03 18:47:23 -05:00
Jeremy Ashkenas
67d34ec40b fixing comment-within-objecta-and-array-literal printing for the new expression regime. 2010-01-03 18:35:03 -05:00
Jeremy Ashkenas
d8603dbff2 change lexical scoping example to use var names that haven't been already defined 2010-01-03 18:27:26 -05:00
Jeremy Ashkenas
6b6cb3ab12 subtle call order bug was preventing variable declarations 2010-01-03 18:22:10 -05:00
Jeremy Ashkenas
10f53bac15 lowering the precedence of if/else/while 2010-01-03 18:11:53 -05:00
Jeremy Ashkenas
15f12423c3 removing the silly newlines from comments 2010-01-03 18:07:03 -05:00
Jeremy Ashkenas
885dbaf7e4 beautiful -- all examples, tests, and docs are now compiling without JSLint warnings 2010-01-03 16:32:59 -05:00
Jeremy Ashkenas
0d0df09c6d All execution tests are now passing with statements everywhere 2010-01-03 15:59:33 -05:00
Jeremy Ashkenas
7df7ff26c8 more progress -- you can wrap parentheses around statements now 2010-01-03 15:13:59 -05:00
Jeremy Ashkenas
841258b360 first rough rough rough draft of kamatsu's closure suggestion -- test.coffee runs, but probably nothing else 2010-01-03 13:59:17 -05:00
Jeremy Ashkenas
f715393b06 bumping version numbers to 0.2.0 in anticipation of release soon-ish 2010-01-03 11:01:50 -05:00
Jeremy Ashkenas
abfe3c35f8 adding a block test and using PARAM_SPLAT to remove the last shift/reduce conflict 2010-01-03 10:46:37 -05:00
Jeremy Ashkenas
8517455746 Adding kamatsu's proposed block literal syntax 2010-01-03 10:19:39 -05:00
Jeremy Ashkenas
0e86fa534e todo 2010-01-02 01:00:03 -05:00
Jeremy Ashkenas
1dbf257df7 adding splice literals, with tests 2010-01-02 00:20:24 -05:00
Jeremy Ashkenas
5cbd94bf14 rebuilding narwhal uncovered a bug with named functions 2010-01-01 22:00:34 -05:00
Jeremy Ashkenas
fa3f3e41d4 fixing the food/eat array comprehension in the docs to not pretend like there's a made-up method on String.prototype 2010-01-01 17:16:34 -05:00
Jeremy Ashkenas
94bab256b4 adding consistent highlighting to variable assignment, whether functions or values 2010-01-01 17:11:48 -05:00
Jeremy Ashkenas
dfa2f50076 better existence test, with tests 2010-01-01 12:41:55 -05:00
Jeremy Ashkenas
e2de88544d adding the notion of existence -- postfixing an expression with a question mark will check if to see if it's not null or undefined 2010-01-01 12:31:05 -05:00
Jeremy Ashkenas
010a2dde11 commenting the lexer a bit more 2010-01-01 12:11:35 -05:00
Jeremy Ashkenas
2fb8f48e75 expanding the list of tokens that regexes may not follow, according to the Mozilla JS 2.0 docs 2010-01-01 12:08:36 -05:00
Jeremy Ashkenas
271ea24b20 adding steps to range comprehensions 2010-01-01 11:54:59 -05:00
Jeremy Ashkenas
792fd359bd fixing precedence order, so that you can nest range comprehensions 2010-01-01 11:19:57 -05:00
Jeremy Ashkenas
acf4a5ee47 making range comprehensions compile safely, even when you assign to the same variable as your endposts. 2010-01-01 10:55:43 -05:00
Jeremy Ashkenas
d9afe2cf44 -- 2010-01-01 10:40:29 -05:00
Jeremy Ashkenas
ee304485b8 allowing indentation within function calls 2010-01-01 10:38:28 -05:00
Jeremy Ashkenas
5957ba624a adding a test for expressions in range comprehensions 2010-01-01 10:20:29 -05:00
Jeremy Ashkenas
2b40607b57 test for uminus 2010-01-01 10:17:33 -05:00
Jeremy Ashkenas
8da4185bbf allowing expressions within range literals 2010-01-01 10:15:22 -05:00
Jeremy Ashkenas
e8df8abf7a fixing the regex lexer to make it less agressive when we know it can't possibly be a regex 2010-01-01 09:49:18 -05:00
Jeremy Ashkenas
b7ef9510c9 fix for multiple splats in a function call 2009-12-31 20:02:15 -05:00
Jeremy Ashkenas
fba131c5a4 adding splats as arguments to function calls 2009-12-31 19:52:13 -05:00
Jeremy Ashkenas
4985a400e6 adding a note in the docs about how to build the parser and install the gem 2009-12-31 18:22:51 -05:00
Jeremy Ashkenas
2ed041b5e1 comment about test_execution being the most important 2009-12-31 18:09:48 -05:00
Jeremy Ashkenas
5bcb2b2629 reserving variables for splats the regular way, not through a custom 'var' declaration 2009-12-31 18:03:39 -05:00
Jeremy Ashkenas
adca8183de adding splats to function definitions 2009-12-31 17:50:12 -05:00
Jeremy Ashkenas
c187f2160f expressions nested in expressions made for some indentation issues -- statements are now responsible for their own leading indentation 2009-12-31 16:50:46 -05:00
Jeremy Ashkenas
959c9a31cb adding a test for multiline-array-comprehension-with-filter 2009-12-31 16:13:52 -05:00
Jeremy Ashkenas
9f6233473e enabling multi-line array and object comprehensions 2009-12-31 16:09:27 -05:00
Jeremy Ashkenas
32b0f9fa4f adding a filtered object comprehension test 2009-12-31 15:08:54 -05:00
Jeremy Ashkenas
f7e49eaae4 using push for comprehension results so that it works with object keys, and adding a test for object comprehensions 2009-12-31 15:03:32 -05:00
Jeremy Ashkenas
3042a50f87 adding weepy's suggestion to use (for .. in) for array comprehensions, which means that they're now object comprehensions as well 2009-12-31 14:52:14 -05:00
Jeremy Ashkenas
c8e820e851 done commenting the rewriter 2009-12-31 13:45:07 -05:00
Jeremy Ashkenas
66f92e770d detailed scan_tokens so that the calling function can indicate the number of spaces to move forward (or backward) in the token stream 2009-12-31 13:43:24 -05:00
Jeremy Ashkenas
f3472b7437 making assignment token detection a regex like all the others 2009-12-31 13:26:38 -05:00
Jeremy Ashkenas
fdf2a76c53 pulled out all token-stream-rewriting logic into the CoffeeScript::Rewriter -- let the lexer be simpleminded 2009-12-31 13:22:33 -05:00
Jeremy Ashkenas
d11569b434 adding a rake:ultraviolet build syntax highlighter task, and regenerating the docs with correct highlighting 2009-12-31 13:01:10 -05:00
Jeremy Ashkenas
86be82f3ae adding a test case for named functions 2009-12-31 10:52:00 -05:00
Jeremy Ashkenas
bcc5aa2bc3 updating docs -- need to get back on the computer that has the syntax highlighter for UV installed 2009-12-30 23:43:55 -05:00
Jeremy Ashkenas
5658b2b41f updating tests for named functions 2009-12-30 23:14:29 -05:00
Jeremy Ashkenas
34bf4ce325 making all functions named functions, if children of an immediate assignment 2009-12-30 23:13:22 -05:00
Jeremy Ashkenas
4251aa30c6 adding proper auto-newline escaping 2009-12-30 22:49:25 -05:00
Jeremy Ashkenas
3ad9316fd0 allowing any manner of indentation in the comments, by adjusting them in the lexer 2009-12-30 22:24:40 -05:00
Jeremy Ashkenas
e4ae324e8f don't print the confusing indentation numbers when raising ParseErrors for indentation 2009-12-30 21:57:03 -05:00
Jeremy Ashkenas
370d05148d getting there, finally ... all tests are green for whitespace 2009-12-30 21:51:23 -05:00
Jeremy Ashkenas
3f27b0ff72 the underscore example parses now -- added line number information to parenthetical nodes 2009-12-30 21:44:51 -05:00
Jeremy Ashkenas
71cf6ab031 moving the newline escaping detection up higher so indents don't overrule it 2009-12-30 21:41:01 -05:00
Jeremy Ashkenas
f3e9a18c3c lex indents with higher precedence than comments 2009-12-30 21:20:30 -05:00
Jeremy Ashkenas
d2176acf25 more fiddling with the lexer -- the indentation is super fragile 2009-12-30 21:15:54 -05:00
Jeremy Ashkenas
62725c5a52 more fiddling with the lexer -- the indentation is super fragile 2009-12-30 21:11:54 -05:00
Jeremy Ashkenas
cc66b31e69 rolling back MULTI_DENT regex 2009-12-30 20:41:32 -05:00
Jeremy Ashkenas
199d314903 regex cleanup -- eliminating some lookahead because Ruby regexps blow chunks (stackoverflows) when you look (ahead) at them funny. 2009-12-30 20:36:47 -05:00
Jeremy Ashkenas
f2a805db24 fixed up the comment/assignment interleaving in nodes.rb 2009-12-30 20:24:24 -05:00
Jeremy Ashkenas
b7e29aac4d rewrote 'rewrite_closing_parens' with an explicit loop -- there was a bug when adding to @tokens in the middle of scan_tokens' while loop -- consider scan_tokens to be on probation until further notice 2009-12-30 20:12:30 -05:00
Jeremy Ashkenas
2ee04b8421 be more vigorous about removing mid-expression newlines, 'when' closes implicit blocks, a better comment-detecting regex lexer that doesn't eat outdents 2009-12-30 19:26:37 -05:00
Jeremy Ashkenas
65ce74fbcb big milestone. examples/code.coffee now compiles correctly under the new whitespace regime 2009-12-30 18:59:33 -05:00
Jeremy Ashkenas
4b520d04e3 balancing parens closing single-line blocks 2009-12-30 18:52:03 -05:00
Jeremy Ashkenas
4eb10f9d43 fixing up documents example 2009-12-30 18:28:16 -05:00
Jeremy Ashkenas
7e58d1d914 adding ')' as a SINGLE_CLOSER, although it's probably unsafe 2009-12-30 18:09:43 -05:00
Jeremy Ashkenas
4097a81456 parser and test tweaks for whitespace -- tests are coming along 2009-12-30 17:58:27 -05:00
Jeremy Ashkenas
c4413b933b removed the final shift/reduce errors -- back to zero for the first time in a long time 2009-12-30 17:45:47 -05:00
Jeremy Ashkenas
e3da53e3df special case for 'else if' in the lexer 2009-12-30 17:41:14 -05:00
Jeremy Ashkenas
675a5f5d7c execution tests still pass -- more lexer block insertion and 2 shift/reduces in the grammar now 2009-12-30 15:52:07 -05:00
Jeremy Ashkenas
02c19b3170 patching up the lexer and adding a test with trailing whitespace (it was too string for trailing whitespace before) 2009-12-30 15:10:47 -05:00
Jeremy Ashkenas
96859e749b fixing up narwhal integration (again) 2009-12-30 15:05:05 -05:00
Jeremy Ashkenas
622ddea343 fixin up narwhal factory and adding more implicit blocks to the lexer 2009-12-30 14:32:59 -05:00
Jeremy Ashkenas
8e8efe4288 patched up lexer to add indentation to single-line flavors of statements -- let's expand this idea 2009-12-30 13:58:00 -05:00
Jeremy Ashkenas
df5c5d9fe2 merged in master branch again 2009-12-30 13:38:50 -05:00
Jeremy Ashkenas
cf7ce8a1af fixing the double-printing bug with coffee -r 2009-12-30 13:34:25 -05:00
Jeremy Ashkenas
b3cd5721cf ignoring test.coffee 2009-12-30 12:59:05 -05:00
Jeremy Ashkenas
893908b8fe removing dots from whitespace examples 2009-12-30 00:22:27 -05:00
Jeremy Ashkenas
6821660905 clean up a couple of test errors for whitespace 2009-12-30 00:08:49 -05:00
Jeremy Ashkenas
bc0214730a touch-ups cleanups to the lexer and rebuilding the narwhal libs from whitespace'd versions 2009-12-29 23:01:08 -05:00
Jeremy Ashkenas
57d0f25054 implementing kamatsu's debt-based lexer for closing delimiters 2009-12-29 22:24:52 -05:00
Jeremy Ashkenas
f456d1b78e whitespace parser down to 4 shift/reduce errors -- good enough for me 2009-12-29 21:46:15 -05:00
Jeremy Ashkenas
332f499c31 put the commas on the outside of expression closers 2009-12-29 20:39:51 -05:00
Jeremy Ashkenas
92cdeb093e don't break trailing commas with rewrite_closing_parens 2009-12-29 10:20:18 -05:00
Jeremy Ashkenas
f2bdd555fa killing some newlines in the execution tests, to test the lexer's newline suppression 2009-12-29 10:02:19 -05:00
Jeremy Ashkenas
5c7dee556a changing array comprehension filters from 'where' to 'when' to mirror case/when 2009-12-29 09:55:37 -05:00
Jeremy Ashkenas
8c6e5d0b37 allowing indentation in object and array literals 2009-12-29 09:25:56 -05:00
Jeremy Ashkenas
1128beb49b still some kinks to work out -- mid-expression blocks 2009-12-29 09:18:41 -05:00
Jeremy Ashkenas
0963eea60e using 'where' for array comprehension filtering, after kamatsu's suggestion -- execution tests pass now with significant whitespace 2009-12-29 08:52:26 -05:00
Jeremy Ashkenas
c1cdedd260 moving along with whitespace 2009-12-28 23:08:02 -05:00
Jeremy Ashkenas
3b0b93ec06 first draft of kamatsu's rewrite rules -- finally got whitespace to be flexible enough, I think. 2009-12-28 21:07:47 -05:00
Jeremy Ashkenas
9c2f66ff13 got lexer balancing parens, indent/outdents, brackets, and curlies 2009-12-28 21:02:40 -05:00
Jeremy Ashkenas
1b688d7077 merging in master 2009-12-28 20:06:23 -05:00
Jeremy Ashkenas
df1f9c27eb removed unused example 2009-12-28 20:05:14 -05:00
Jeremy Ashkenas
e227a3bc69 fixing relative path for execution tests 2009-12-28 16:23:48 -05:00
Jeremy Ashkenas
e4c6119550 stop shifting args 2009-12-28 16:20:11 -05:00
Jeremy Ashkenas
6c9e8f28b6 rebuilding narwhal libs 2009-12-28 16:10:56 -05:00
Jeremy Ashkenas
cc7e685428 merging in tlrobinson's fix for package.json 2009-12-28 16:09:14 -05:00
tlrobinson
4abd88f2a9 Add package.json to gemspec files so Narwhal integrations works when installed as a gem. 2009-12-28 12:45:47 -08:00
Jeremy Ashkenas
a44fe402a1 removing broken accidental commit 2009-12-28 09:02:55 -08:00
tlrobinson
350cb623ae Add package on command line in case it's not installed in a Narwhal packages path. 2009-12-28 01:49:07 -08:00
tlrobinson
42c9c53a4c Merge branch 'master' of git://github.com/jashkenas/coffee-script 2009-12-28 01:36:23 -08:00
tlrobinson
5a49c22121 Fixed Narwhal integration. Cleaned up module organization, etc. 2009-12-28 01:16:57 -08:00
Jeremy Ashkenas
2bc4cbbdcc part of the way to supporting multiline array comprehensions -- the grammar and parsing is there -- the code generation is tricky 2009-12-27 21:50:02 -08:00
Jeremy Ashkenas
8fe6fa1cd7 CoffeeScript 0.1.6 -- bugfixes 2009-12-27 12:49:11 -08:00
Jeremy Ashkenas
835db4b279 fixing paths for running
coffee compiles CoffeeScript source files into JavaScript.

Usage:
  coffee path/to/script.coffee
    -i, --interactive                run a CoffeeScript REPL (requires Narwhal)
    -r, --run                        compile and run a script (requires Narwhal)
    -o, --output [DIR]               set the directory for compiled JavaScript
    -w, --watch                      watch scripts for changes, and recompile
    -p, --print                      print the compiled JavaScript to stdout
    -l, --lint                       pipe the compiled JavaScript through JSLint
    -e, --eval                       compile a cli scriptlet or read from stdin
    -t, --tokens                     print the tokens that the lexer produces
    -v, --verbose                    print at every step of code generation
    -n, --no-wrap                    raw output, no safety wrapper or vars
        --install-bundle             install the CoffeeScript TextMate bundle
        --version                    display CoffeeScript version
    -h, --help                       display this help message outside of the coffee-script directory
2009-12-27 12:43:05 -08:00
Jeremy Ashkenas
f89c864911 more underscore examples 2009-12-27 11:01:19 -08:00
Jeremy Ashkenas
542726911a more underscore and bugfix edits to code generation 2009-12-26 22:24:21 -08:00
Jeremy Ashkenas
575dc7d12e more underscore, and removing custom_assign and return from conditional compilation 2009-12-26 21:55:56 -08:00
Jeremy Ashkenas
ff0062b088 coffeescript 0.1.5, just for kicks 2009-12-26 21:25:37 -08:00
Jeremy Ashkenas
78589f5db1 docs for range comprehensiosn 2009-12-26 20:46:31 -08:00
Jeremy Ashkenas
903331f3ff got negative ranges working with (much, much) uglier compiled code 2009-12-26 20:35:43 -08:00
Jeremy Ashkenas
6aa247f73d that's it for now for significant whitespace -- I really just can't make flexible enough 2009-12-26 19:29:59 -08:00
Jeremy Ashkenas
da71735066 smarter but uglier lexer -- now handles most significant whitespace cases. Clean it up though... (newlines after outdents) 2009-12-26 13:22:53 -08:00
Jeremy Ashkenas
47b45c4494 removing no_paren -- it was optimizing away order of operations 2009-12-26 11:55:34 -08:00
Jeremy Ashkenas
d6ac6a3535 removing no_paren -- can cause order of operations errors 2009-12-26 11:10:59 -08:00
Jeremy Ashkenas
c322d77b86 got a lexer working along the lines of what kamatsu proposes 2009-12-26 10:59:47 -08:00
Jeremy Ashkenas
7aa69579ff little more progress on whitespace 2009-12-26 10:49:11 -08:00
Jeremy Ashkenas
5f3e2b7fc7 merging in master 2009-12-26 09:59:06 -08:00
Jeremy Ashkenas
c4844abb28 adding newline escaping, with tests 2009-12-26 09:29:03 -08:00
Jeremy Ashkenas
96ae6d80f3 docs 2009-12-26 09:05:57 -08:00
Jeremy Ashkenas
60342e8cd9 changed bin/coffee-script to bin/coffee 2009-12-26 08:57:13 -08:00
Jeremy Ashkenas
f9c3d3fc14 fixed range comprehension indexing 2009-12-26 00:27:49 -08:00
Jeremy Ashkenas
b1e25eea88 trading the cs> prompt for the coffee> prompt 2009-12-26 00:18:24 -08:00
Jeremy Ashkenas
1486bbab9f added array comprehensions over ranges 2009-12-26 00:16:40 -08:00
Jeremy Ashkenas
59d912cc26 docs for assignment-as-expression 2009-12-25 23:17:34 -08:00
Jeremy Ashkenas
9adf2e2d30 major internal reworking -- all variable declarations have been pushed up to the first line of the block scope -- all assignment is now an inherent expression 2009-12-25 22:57:33 -08:00
Jeremy Ashkenas
cf46fa8c2c started raising syntax errors for parens wrapped around expressions (they used to silently be ignored) 2009-12-25 20:36:22 -08:00
Jeremy Ashkenas
16ca3d1608 don't add the no_wrap key to the options hash unless we're going to use it 2009-12-25 19:48:47 -08:00
Jeremy Ashkenas
476a251c80 comment 2009-12-25 19:34:40 -08:00
Jeremy Ashkenas
274152aff7 documenting ranges and slices 2009-12-25 16:35:57 -08:00
Jeremy Ashkenas
00659e5f76 reorganizing test fixtures and adding range literals for array slices 2009-12-25 16:20:28 -08:00
Jeremy Ashkenas
88fe4f6fd1 CoffeeScript 0.1.4 2009-12-25 14:43:24 -08:00
Jeremy Ashkenas
03a90928e1 moved the coffeescript extension over from .cs to .coffee -- let's leave C# in peace. Changed array comprehensions to always return their mapped result, even when unassigned 2009-12-25 14:18:05 -08:00
Jeremy Ashkenas
67865d3341 stopped using __proto__, instead, using a variant of goog.inherits for extends and super() 2009-12-25 13:57:47 -08:00
Jeremy Ashkenas
0337513172 ForBody is really the ForSource 2009-12-25 13:40:57 -08:00
Jeremy Ashkenas
1ee2c53391 cleaned up the for grammar and eliminated a shift/reduce conflict 2009-12-25 13:39:33 -08:00
Jeremy Ashkenas
4b7c965101 make equals signs full equals of colons -- you can use them inside of object literals now too 2009-12-25 13:21:17 -08:00
Jeremy Ashkenas
11c394fb7e allowing = to assign 2009-12-25 07:42:27 -08:00
Jeremy Ashkenas
54a7c405e7 going back to familiar operators +: is just too strange 2009-12-25 07:31:51 -08:00
Jeremy Ashkenas
781f3b5fa4 added a test to make sure that chained calls work 2009-12-25 07:16:59 -08:00
Jeremy Ashkenas
2393472924 allowing chained function calls, one right after another 2009-12-25 07:08:57 -08:00
Jeremy Ashkenas
859ab7583f bumping to 0.1.3 ... here we go 2009-12-25 00:16:56 -08:00
Jeremy Ashkenas
3eedd5bb50 better error warnings on the command line 2009-12-25 00:02:27 -08:00
Jeremy Ashkenas
5b7e695f6c removed bin/cs in favor of a more comprehensive coffee-script command ... now with --interactive and --run 2009-12-24 23:57:27 -08:00
Jeremy Ashkenas
1e3182727b majorly cleaned up the CoffeeScript that defines the Narwhal integration 2009-12-24 23:28:01 -08:00
Jeremy Ashkenas
e595dbfcee the narwhal integration written in JavaScript has been replaced with CoffeeScript, and compiler-generated variable names now start with '__' 2009-12-24 23:09:24 -08:00
Jeremy Ashkenas
12b830893d sped up the execution test a good deal by running it all in one pass 2009-12-24 22:29:30 -08:00
Jeremy Ashkenas
cca80342aa making all assignment-y operators use a colon -- now it's +: -: *: /:, and friends 2009-12-24 22:25:29 -08:00
Jeremy Ashkenas
4412f590cf removed dependency on v8 in favor of bin/cs 2009-12-24 22:08:32 -08:00
tlrobinson
0cd2d78027 Print compiler errors to stderr 2009-12-24 19:34:17 -08:00
Jeremy Ashkenas
be672ebfc1 fixed the bin/cs repl to save assignment between commands by using the new --no-wrap 2009-12-24 17:45:23 -08:00
Jeremy Ashkenas
9047c87567 the --no-wrap option now disables top-level var declarations 2009-12-24 17:37:24 -08:00
Jeremy Ashkenas
31d630bb91 updating docs for isnt 2009-12-24 17:22:46 -08:00
Jeremy Ashkenas
7a2f5a333f trading aint for isnt -- let's be serious 2009-12-24 17:21:20 -08:00
Jeremy Ashkenas
66303636dc allowing quoted strings within object assignment, a in JS and JSON 2009-12-24 17:14:53 -08:00
Jeremy Ashkenas
9dc932e380 bumping to 0.1.2 to get the super()/extends fix out there 2009-12-24 17:05:55 -08:00
Jeremy Ashkenas
a71de4b5b6 got extends back in the language -- use it together with super 2009-12-24 16:49:23 -08:00
Jeremy Ashkenas
ada8dfc6d4 fixing super() calls, thanks to tolmasky 2009-12-24 16:23:23 -08:00
Jeremy Ashkenas
4112595368 removing the special-case std-reading in favor of '--eval' 2009-12-24 15:49:42 -08:00
Jeremy Ashkenas
c281db7730 document that -e can read from stdin 2009-12-24 15:35:58 -08:00
Jeremy Ashkenas
5e6b49ad1e with a working -n --no-wrap option to disable the top-level function safety wrapper 2009-12-24 15:31:00 -08:00
Jeremy Ashkenas
ec1a527575 Merge branch 'master' of git://github.com/tlrobinson/coffee-script 2009-12-24 15:05:56 -08:00
Jeremy Ashkenas
7f066aa168 ... 2009-12-24 15:05:14 -08:00
Jeremy Ashkenas
166ea578f9 outdent lexing is correct now, I think 2009-12-24 14:51:53 -08:00
tlrobinson
dc0ab1afca Command line CoffeeScript 2009-12-24 14:42:57 -08:00
tlrobinson
ae72fbfd0d Narwhal support for CoffeeScript 2009-12-24 14:41:35 -08:00
tlrobinson
ad0735f765 Read from stdin if source is "-" 2009-12-24 14:40:39 -08:00
Jeremy Ashkenas
d49c178f1d added and -> &&, or -> || to the docs (they were missing) 2009-12-24 14:37:30 -08:00
Jeremy Ashkenas
cb3b47690a this might not work for ))) outdent cases 2009-12-24 14:34:48 -08:00
Jeremy Ashkenas
cf6060bdb3 first, totally broken branch of significant whitespace -- it can handle examples/whitespace.cs though 2009-12-24 13:48:46 -08:00
Jeremy Ashkenas
8f8ba255b3 docs for 0.1.1 2009-12-24 12:02:28 -08:00
Jeremy Ashkenas
a4bc24817d bumping to 0.1.1 2009-12-24 11:59:19 -08:00
Jeremy Ashkenas
9eeac9b272 added the typeof operater as an OpNode 2009-12-24 11:50:44 -08:00
Jeremy Ashkenas
f859eb6cec added the instanceof operator to the grammar as an operation node 2009-12-24 11:46:51 -08:00
Jeremy Ashkenas
b29afc2c09 another wish 2009-12-24 10:31:44 -08:00
Jeremy Ashkenas
95b79973f9 docs 2009-12-24 09:56:44 -08:00
Jeremy Ashkenas
1f79733a33 added a wish list to the docs 2009-12-24 09:54:12 -08:00
Jeremy Ashkenas
cfc29f7830 doc tweaks 2009-12-24 01:38:32 -08:00
Jeremy Ashkenas
34486039e1 changing switch/case to switch/when -- it's a better word 2009-12-24 01:33:59 -08:00
Jeremy Ashkenas
53e8ea7d9e added comprehensive linting to the test suit 2009-12-24 00:49:11 -08:00
Jeremy Ashkenas
9841b78ed8 fixed the broken try/catch grammar 2009-12-24 00:45:16 -08:00
Jeremy Ashkenas
065cfddd0d with a more comprehensive execution test that uncovered some missing spots 2009-12-24 00:41:12 -08:00
Jeremy Ashkenas
6882a3d36c added some execution test 2009-12-24 00:12:07 -08:00
Jeremy Ashkenas
85c595e84c added readme 2009-12-23 23:12:29 -08:00
Jeremy Ashkenas
b8f563d49e first draft of docs are done 2009-12-23 23:01:39 -08:00
Jeremy Ashkenas
3b3d57e84a waypoint 2009-12-24 01:22:41 -05:00
Jeremy Ashkenas
a1ee622aa6 added git st with the new operator regex 2009-12-24 00:37:33 -05:00
Jeremy Ashkenas
64733981fd ported over a little more underscore 2009-12-23 21:09:32 -05:00
Jeremy Ashkenas
7833b11724 added the ! sign as an allowed operator 2009-12-23 21:00:04 -05:00
Jeremy Ashkenas
a7032d0964 ... 2009-12-23 20:57:35 -05:00
Jeremy Ashkenas
f2c872230e more better super docs, better switch docs 2009-12-23 20:48:55 -05:00
Jeremy Ashkenas
8d26488748 added yes, no, on and off as boolean aliases and a nice aliases section to the docs 2009-12-23 20:24:55 -05:00
Jeremy Ashkenas
d92ed46503 broken waypoint, but fixed line numbers with the new JS comments 2009-12-23 19:42:44 -05:00
Jeremy Ashkenas
777eac045a broken waypoint, but fixed line numbers with the new JS comments 2009-12-23 19:42:18 -05:00
Jeremy Ashkenas
37e2f3b944 for whatever reason, don't need to force else-bodies to compile as statements anymore ... let them do what they want 2009-12-22 12:18:27 -05:00
Jeremy Ashkenas
3902a8b268 removed all traces of 'extends' -- it's not any shorter or more convenient than just setting the prototype 2009-12-22 12:08:29 -05:00
Jeremy Ashkenas
63a910d7ce got comments within object and array literals working out 2009-12-22 11:50:43 -05:00
Jeremy Ashkenas
3cee51cc37 first draft of parsing and printing along comments -- unfortunately, not yet working within objects and arrays 2009-12-22 11:27:19 -05:00
Jeremy Ashkenas
45b559a721 passing through comments as tags on Values, but not printing them out quite yet... 2009-12-22 10:48:58 -05:00
Jeremy Ashkenas
7c59eb2c36 nice -- it's pushing down assignments properly (recursively) now 2009-12-22 10:16:53 -05:00
Jeremy Ashkenas
40f633b8d0 moderate refactor of nodes.rb -- tests pass and examples compile without warnings 2009-12-22 10:11:41 -05:00
Jeremy Ashkenas
4e3d7cb974 clean up children at exit -- had about twenty processes all watching and recompiling the docs 2009-12-21 12:15:13 -05:00
Jeremy Ashkenas
d14b127b60 documentation waypoint 2009-12-21 11:41:45 -05:00
Jeremy Ashkenas
0d566ed1ec added full complement of bitwise operators 2009-12-19 22:56:27 -05:00
Jeremy Ashkenas
d86f92c6f2 added full complement of bitwise operators 2009-12-19 22:55:58 -05:00
Jeremy Ashkenas
efc5150144 making the each fixture a little more like underscore, and avoiding passing assignment into functions from the outside 2009-12-19 00:45:36 -05:00
Jeremy Ashkenas
7474ed1a5e added the verbose option to the CLI 2009-12-19 00:37:54 -05:00
Jeremy Ashkenas
2f4433af71 more little fixes, lots of subtle things, added a verbose logging mode 2009-12-19 00:33:34 -05:00
Jeremy Ashkenas
91303efd2c lots of tweaks make the tests pass again 2009-12-18 23:13:59 -05:00
Jeremy Ashkenas
d73ff9a79f patched up array comprehensions somewhat. Parens are still a necessary evil, and there's still probably plenty of edge cases 2009-12-18 22:30:09 -05:00
Jeremy Ashkenas
7ec6300a48 little fixes more examples 2009-12-18 09:55:31 -05:00
Jeremy Ashkenas
42c84fc54b adding css for syntax highlighting 2009-12-18 08:36:20 -05:00
Jeremy Ashkenas
f0a790d624 todo to-done 2009-12-18 07:40:26 -05:00
Jeremy Ashkenas
fdcff7aaf0 finished the first draft of the parser test 2009-12-18 07:28:26 -05:00
Jeremy Ashkenas
ab2362e372 adding comprehensive attr_readers to the AST for testing 2009-12-18 07:21:59 -05:00
Jeremy Ashkenas
98cf9f5af2 parser test raises some minor improvements (remove unnecessary ValueNode arrays, etc 2009-12-18 07:11:01 -05:00
Jeremy Ashkenas
e74af51a7d adding an initial lexer test 2009-12-18 06:59:06 -05:00
Jeremy Ashkenas
35b5d8c630 after a lot of grammar wrestling, got the if-else chains to parse unambiguously. Now you only need a single period to close chains of any length. 2009-12-18 00:49:23 -05:00
Jeremy Ashkenas
8575d91c66 finally got the function/object/variable assignment indentation straightened out, I think 2009-12-17 23:45:24 -05:00
Jeremy Ashkenas
8338f124be compiling if-else chains into nice flat ones 2009-12-17 23:34:52 -05:00
Jeremy Ashkenas
be19f7ad4f first major rework of the nodes -- still need more comments and templatish cleanup, but character tagging is all settled 2009-12-17 23:22:02 -05:00
Jeremy Ashkenas
5c737d29ab renamed Nodes to Expressions 2009-12-17 22:58:40 -05:00
Jeremy Ashkenas
92c59ea4a5 finished commenting everything but the nodes -- they're up next 2009-12-17 22:54:24 -05:00
Jeremy Ashkenas
dd28074436 finished commenting the grammar 2009-12-17 22:22:35 -05:00
Jeremy Ashkenas
f8ab30fa42 many more comments, plus a fix for inner-assignment indentation 2009-12-17 22:13:29 -05:00
Jeremy Ashkenas
581ad8ba1e commented the command-line interface 2009-12-17 21:57:21 -05:00
Jeremy Ashkenas
5703c1ed6d moved the TextMate bundle into the gem, added a command to install it 2009-12-17 21:46:12 -05:00
Jeremy Ashkenas
a71a3cdf3f added the 'delete' operator 2009-12-17 21:21:07 -05:00
Jeremy Ashkenas
f5d31b78e6 removed the 'default' keyword in favor of an 'else' 2009-12-17 21:14:36 -05:00
Jeremy Ashkenas
e1e6bb72c6 removed class checks in favor of statement? 2009-12-17 21:10:49 -05:00
Jeremy Ashkenas
d89ca33cdb number examples 2009-12-17 21:00:31 -05:00
Jeremy Ashkenas
58ecfeb815 added exponential and hex numbers 2009-12-17 20:59:19 -05:00
Jeremy Ashkenas
955d01a302 added a nice --watch mode to continually recompile or relint (or reprint) your coffeescripts 2009-12-17 20:37:39 -05:00
Jeremy Ashkenas
f8a5f7595d cleanups getting underscore to compile 2009-12-17 10:33:57 -05:00
Jeremy Ashkenas
9f33cf19ad added nice syntax errors 2009-12-17 10:04:43 -05:00
Jeremy Ashkenas
6deb85e083 passing through values with line number information that look and act like Ruby natives 2009-12-17 09:37:42 -05:00
Jeremy Ashkenas
9ad108281e cleaned up lexer in order to add line numbers 2009-12-17 09:29:49 -05:00
Jeremy Ashkenas
cd0091c045 added the ability to super() 2009-12-17 09:07:42 -05:00
Jeremy Ashkenas
01ecae2c55 allowing inner slashes in regexes 2009-12-17 08:29:19 -05:00
Jeremy Ashkenas
cef4bcd756 supporting escaped quotes in strings 2009-12-17 08:26:46 -05:00
Jeremy Ashkenas
ad50bd7154 supporting escaped quotes in strings 2009-12-17 08:26:20 -05:00
Jeremy Ashkenas
b97f9cf5ec multiline strings 2009-12-17 08:23:17 -05:00
Jeremy Ashkenas
2d65d3d73b multiline strings 2009-12-17 08:23:07 -05:00
Jeremy Ashkenas
733a76fdba built the first gem -- works just fine 2009-12-16 23:10:03 -05:00
Jeremy Ashkenas
fd63698005 completely reorganized for a gem and the 'coffee-script' command 2009-12-16 22:42:53 -05:00
288 changed files with 7514 additions and 23394 deletions

2
.gitignore vendored
View File

@@ -1,6 +1,4 @@
presentation
test.coffee
parser.output
test/fixtures/underscore
examples/beautiful_code/parse.coffee
*.gem

View File

@@ -1,99 +0,0 @@
fs: require 'fs'
helpers: require('./lib/helpers').helpers
CoffeeScript: require './lib/coffee-script'
# Run a CoffeeScript through our node/coffee interpreter.
run: (args) ->
proc: process.createChildProcess 'bin/coffee', args
proc.addListener 'error', (err) -> if err then puts err
option '-p', '--prefix [DIR]', 'set the installation prefix for `cake install`'
task 'install', 'install CoffeeScript into /usr/local (or --prefix)', (options) ->
base: options.prefix or '/usr/local'
lib: base + '/lib/coffee-script'
exec([
'mkdir -p ' + lib
'cp -rf bin lib LICENSE README package.json src vendor ' + lib
'ln -sf ' + lib + '/bin/coffee ' + base + '/bin/coffee'
'ln -sf ' + lib + '/bin/cake ' + base + '/bin/cake'
].join(' && '), (err, stdout, stderr) ->
if err then print stderr
)
task 'build', 'build the CoffeeScript language from source', ->
files: fs.readdirSync 'src'
files: 'src/' + file for file in files when file.match(/\.coffee$/)
run ['-c', '-o', 'lib'].concat(files)
task 'build:full', 'rebuild the source twice, and run the tests', ->
exec 'bin/cake build && bin/cake build && bin/cake test', (err, stdout, stderr) ->
print stdout if stdout
print stderr if stderr
throw err if err
task 'build:parser', 'rebuild the Jison parser (run build first)', ->
require.paths.unshift 'vendor/jison/lib'
parser: require('./lib/grammar').parser
js: parser.generate()
parser_path: 'lib/parser.js'
fs.writeFile parser_path, js
task 'build:ultraviolet', 'build and install the Ultraviolet syntax highlighter', ->
exec 'plist2syntax ../coffee-script-tmbundle/Syntaxes/CoffeeScript.tmLanguage', (err) ->
throw err if err
exec 'sudo mv coffeescript.yaml /usr/local/lib/ruby/gems/1.8/gems/ultraviolet-0.10.2/syntax/coffeescript.syntax'
task 'build:browser', 'rebuild the merged script for inclusion in the browser', ->
exec 'rake browser', (err) ->
throw err if err
task 'doc:site', 'watch and continually rebuild the documentation for the website', ->
exec 'rake doc'
task 'doc:source', 'rebuild the internal documentation', ->
exec 'docco src/*.coffee && cp -rf docs documentation && rm -r docs', (err) ->
throw err if err
task 'doc:underscore', 'rebuild the Underscore.coffee documentation page', ->
exec 'docco examples/underscore.coffee && cp -rf docs documentation && rm -r docs', (err) ->
throw err if err
task 'test', 'run the CoffeeScript language test suite', ->
helpers.extend global, require 'assert'
passed_tests: failed_tests: 0
start_time: new Date()
original_ok: ok
helpers.extend global, {
ok: (args...) -> passed_tests += 1; original_ok(args...)
CoffeeScript: CoffeeScript
}
red: '\033[0;31m'
green: '\033[0;32m'
reset: '\033[0m'
on_exit: ->
time: ((new Date() - start_time) / 1000).toFixed(2)
message: "passed $passed_tests tests in $time seconds$reset"
puts(if failed_tests then "${red}failed $failed_tests and $message" else "$green$message")
process.addListener 'exit', on_exit
fs.readdir 'test', (err, files) ->
files.forEach (file) ->
return unless file.match(/\.coffee$/i)
source: path.join 'test', file
fs.readFile source, (err, code) ->
try
CoffeeScript.run code, {source: source}
catch err
failed_tests += 1
puts "${red}failed:${reset} $source"
puts err.stack

View File

@@ -1,4 +1,4 @@
Copyright (c) 2010 Jeremy Ashkenas
Copyright (c) 2009 Jeremy Ashkenas
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation

12
README
View File

@@ -22,21 +22,17 @@
CoffeeScript is a little language that compiles into JavaScript.
Install Node.js, and then the CoffeeScript compiler:
sudo bin/cake install
Install the compiler:
gem install coffee-script
Compile a script:
coffee /path/to/script.coffee
For documentation, usage, and examples, see:
http://coffeescript.org/
http://jashkenas.github.com/coffee-script/
To suggest a feature, report a bug, or general discussion:
To suggest a feature or report a bug:
http://github.com/jashkenas/coffee-script/issues/
If you'd like to chat, drop by #coffeescript on Freenode IRC,
or on webchat.freenode.net.
The source repository:
git://github.com/jashkenas/coffee-script.git

View File

@@ -1,15 +1,43 @@
require 'erb'
require 'fileutils'
require 'rake/testtask'
require 'rubygems'
require 'yui/compressor'
desc "Run all tests"
task :test do
$LOAD_PATH.unshift(File.expand_path('test'))
require 'redgreen' if Gem.available?('redgreen')
require 'test/unit'
Dir['test/*/**/test_*.rb'].each {|test| require test }
end
namespace :build do
desc "Recompile the Racc parser (pass -v and -g for verbose debugging)"
task :parser, :racc_args do |t, args|
sh "racc #{args[:racc_args]} -o lib/coffee_script/parser.rb lib/coffee_script/grammar.y"
end
desc "Compile the Narwhal interface for --interactive and --run"
task :narwhal do
sh "bin/coffee lib/coffee_script/narwhal/*.coffee -o lib/coffee_script/narwhal/lib/coffee-script"
sh "mv lib/coffee_script/narwhal/lib/coffee-script/coffee-script.js lib/coffee_script/narwhal/lib/coffee-script.js"
end
desc "Compile and install the Ultraviolet syntax highlighter"
task :ultraviolet do
sh "plist2syntax lib/coffee_script/CoffeeScript.tmbundle/Syntaxes/CoffeeScript.tmLanguage"
sh "sudo mv coffeescript.yaml /usr/local/lib/ruby/gems/1.8/gems/ultraviolet-0.10.2/syntax/coffeescript.syntax"
end
end
desc "Build the documentation page"
task :doc do
source = 'documentation/index.html.erb'
child = fork { exec "bin/coffee -c documentation/coffee/*.coffee -o documentation/js -w" }
child = fork { exec "bin/coffee documentation/coffee/*.coffee -o documentation/js -w" }
at_exit { Process.kill("INT", child) }
Signal.trap("INT") { exit }
# `uv -t idle -s coffeescript -h examples/underscore.coffee > documentation/underscore.html`
loop do
mtime = File.stat(source).mtime
if !@mtime || mtime > @mtime
@@ -21,11 +49,19 @@ task :doc do
end
end
desc "Build the single concatenated and minified script for the browser"
task :browser do
sources = %w(helpers.js rewriter.js lexer.js parser.js scope.js nodes.js coffee-script.js)
code = sources.map {|s| File.read('lib/' + s) }.join('')
code = YUI::JavaScriptCompressor.new.compress(code)
File.open('extras/coffee-script.js', 'w+') {|f| f.write(code) }
namespace :gem do
desc 'Build and install the coffee-script gem'
task :install do
sh "gem build coffee-script.gemspec"
sh "sudo gem install #{Dir['*.gem'].join(' ')} --local --no-ri --no-rdoc"
end
desc 'Uninstall the coffee-script gem'
task :uninstall do
sh "sudo gem uninstall -x coffee-script"
end
end
task :default => :test

View File

@@ -1,8 +0,0 @@
#!/usr/bin/env node
var path = require('path');
var fs = require('fs');
var lib = path.join(path.dirname(fs.realpathSync(__filename)), '../lib');
require(lib + '/helpers').helpers.extend(global, require('sys'));
require(lib + '/cake').run();

View File

@@ -1,8 +1,5 @@
#!/usr/bin/env node
#!/usr/bin/env ruby
var path = require('path');
var fs = require('fs');
var lib = path.join(path.dirname(fs.realpathSync(__filename)), '../lib');
require "#{File.dirname(__FILE__)}/../lib/coffee_script/command_line.rb"
require(lib + '/helpers').helpers.extend(global, require('sys'));
require(lib + '/command').run();
CoffeeScript::CommandLine.new

26
coffee-script.gemspec Normal file
View File

@@ -0,0 +1,26 @@
Gem::Specification.new do |s|
s.name = 'coffee-script'
s.version = '0.2.1' # Keep version in sync with coffee-script.rb
s.date = '2010-1-5'
s.homepage = "http://jashkenas.github.com/coffee-script/"
s.summary = "The CoffeeScript Compiler"
s.description = <<-EOS
CoffeeScript is a little language that compiles into JavaScript. Think
of it as JavaScript's less ostentatious kid brother -- the same genes,
roughly the same height, but a different sense of style. Apart from a
handful of bonus goodies, statements in CoffeeScript correspond
one-to-one with their equivalent in JavaScript, it's just another
way of saying it.
EOS
s.authors = ['Jeremy Ashkenas']
s.email = 'jashkenas@gmail.com'
s.rubyforge_project = 'coffee-script'
s.has_rdoc = false
s.require_paths = ['lib']
s.executables = ['coffee']
s.files = Dir['bin/*', 'examples/*', 'lib/**/*', 'coffee-script.gemspec', 'LICENSE', 'README', 'package.json']
end

View File

@@ -5,5 +5,3 @@ volume: 10 if band isnt spinal_tap
let_the_wild_rumpus_begin() unless answer is no
if car.speed < speed_limit then accelerate()
print "My name is " + @name

View File

@@ -0,0 +1,4 @@
backwards: =>
alert(arguments.reverse())
backwards("stairway", "to", "heaven")

View File

@@ -1,7 +1,7 @@
# Eat lunch.
lunch: eat food for food in ['toast', 'cheese', 'wine']
lunch: eat(food) for food in ['toast', 'cheese', 'wine']
# Naive collision detection.
for roid in asteroids
for roid2 in asteroids when roid isnt roid2
roid.explode() if roid.overlaps roid2
roid.explode() if roid.overlaps(roid2)

View File

@@ -1,5 +0,0 @@
url: "documentation/coffee/binding.coffee"
get_source: jQuery.get <- jQuery, url
get_source (response) -> alert response

View File

@@ -0,0 +1,4 @@
$('table.list').each() table =>
$('tr.account', table).each() row =>
row.show()
row.highlight()

View File

@@ -1,3 +0,0 @@
task 'test', 'run each of the unit tests', ->
for test in test_files
fs.readFile test, (err, code) -> eval coffee.compile code

View File

@@ -1,29 +0,0 @@
class Animal
move: (meters) ->
alert @name + " moved " + meters + "m."
class Snake extends Animal
constructor: (name) ->
@name: name
move: ->
alert "Slithering..."
super 5
class Horse extends Animal
constructor: (name) ->
@name: name
move: ->
alert "Galloping..."
super 45
sam: new Snake "Sammy the Python"
tom: new Horse "Tommy the Palomino"
sam.move()
tom.move()

View File

@@ -1,5 +0,0 @@
cholesterol: 127
healthy: 200 > cholesterol > 60

View File

@@ -6,4 +6,4 @@ if happy and knows_it
date: if friday then sue else jill
expensive: or do_the_math()
expensive ||= do_the_math()

View File

@@ -1,8 +1 @@
solipsism: true if mind? and not world?
speed ?= 140
solipsism: true if mind? and not world?

View File

@@ -1,4 +1,4 @@
grade: (student) ->
grade: student =>
if student.excellent_work
"A+"
else if student.okay_stuff

View File

@@ -1,3 +1,3 @@
# The first ten global properties.
globals: (name for name of window)[0...10]
globals: (name for property, name in window)[0...10]

View File

@@ -2,5 +2,5 @@ alert(
try
nonexistent / undefined
catch error
"And the error is ... " + error
"The error is: " + error
)

View File

@@ -1,6 +0,0 @@
Account: (customer, cart) ->
@customer: customer
@cart: cart
$('.shopping_cart').bind 'click', (event) =>
@customer.purchase @cart

View File

@@ -1,2 +1,2 @@
square: (x) -> x * x
cube: (x) -> square(x) * x
square: x => x * x
cube: x => square(x) * x

View File

@@ -1,5 +0,0 @@
html: '''
<strong>
cup of coffeescript
</strong>
'''

View File

@@ -1,2 +0,0 @@
author: "Wittgenstein"
quote: "A picture is a fact. -- $author"

View File

@@ -1,6 +0,0 @@
sentence: "${ 22 / 7 } is a decent approximation of π"
sep: "[.\\/\\- ]"
dates: /\d+$sep\d+$sep\d+/g

View File

@@ -1,5 +0,0 @@
weather_report: (location) ->
# Make an Ajax request to fetch the weather...
[location, 72, "Mostly Sunny"]
[city, temp, forecast]: weather_report "Berkeley, CA"

View File

@@ -1,4 +1,3 @@
years_old: {max: 10, ida: 9, tim: 11}
ages: for child, age of years_old
child + " is " + age
ages: child + " is " + age for age, child in years_old

View File

@@ -1,13 +0,0 @@
futurists: {
sculptor: "Umberto Boccioni"
painter: "Vladimir Burliuk"
poet: {
name: "F.T. Marinetti"
address: [
"Via Roma 42R"
"Bellagio, Italy 22021"
]
}
}
{poet: {name: poet, address: [street, city]}}: futurists

View File

@@ -6,7 +6,7 @@ opposite_day: true
number: -42 if opposite_day
# Functions:
square: (x) -> x * x
square: x => x * x
# Arrays:
list: [1, 2, 3, 4, 5]
@@ -15,15 +15,15 @@ list: [1, 2, 3, 4, 5]
math: {
root: Math.sqrt
square: square
cube: (x) -> x * square x
cube: x => x * square(x)
}
# Splats:
race: (winner, runners...) ->
print winner, runners
race: winner, *runners =>
print(winner, runners)
# Existence:
alert "I knew it!" if elvis?
alert("I knew it!") if elvis?
# Array comprehensions:
cubed_list: math.cube num for num in list
cubed_list: math.cube(num) for num in list

View File

@@ -1,4 +0,0 @@
bait: 1000
and_switch: 0
[bait, and_switch]: [and_switch, bait]

View File

@@ -1,7 +0,0 @@
tag: "<impossible>"
[open, contents..., close]: tag.split("")

View File

@@ -1,2 +0,0 @@
String::dasherize: ->
this.replace(/_/g, "-")

View File

@@ -1,6 +1,3 @@
countdown: num for num in [10..1]
egg_delivery: ->
for i in [0...eggs.length] by 12
dozen_eggs: eggs[i...i+12]
deliver new egg_carton(dozen)
for i in [0...eggs.length] by 12
dozen_eggs: eggs[i...i+12]
deliver(new egg_carton(dozen))

View File

@@ -1,5 +1,5 @@
num: 1
change_numbers: ->
change_numbers: =>
new_num: -1
num: 10
new_num: change_numbers()

View File

@@ -1 +0,0 @@
lottery.draw_winner()?.address?.zipcode

View File

@@ -1,6 +1,6 @@
gold: silver: the_field: "unknown"
award_medals: (first, second, rest...) ->
medalists: first, second, *rest =>
gold: first
silver: second
the_field: rest
@@ -18,8 +18,8 @@ contenders: [
"Usain Bolt"
]
award_medals contenders...
medalists(*contenders)
alert "Gold: " + gold
alert "Silver: " + silver
alert "The Field: " + the_field
alert("Gold: " + gold)
alert("Silver: " + silver)
alert("The Field: " + the_field)

View File

@@ -0,0 +1,25 @@
Animal: =>
Animal.prototype.move: meters =>
alert(this.name + " moved " + meters + "m.")
Snake: name => this.name: name
Snake extends Animal
Snake.prototype.move: =>
alert("Slithering...")
super(5)
Horse: name => this.name: name
Horse extends Animal
Horse.prototype.move: =>
alert("Galloping...")
super(45)
sam: new Snake("Sammy the Python")
tom: new Horse("Tommy the Palomino")
sam.move()
tom.move()

View File

@@ -1,10 +1,9 @@
switch day
when "Mon" then go_to_work()
when "Tue" then go_to_the_park()
when "Thu" then go_ice_fishing()
when "Fri", "Sat"
when "Tuesday" then eat_breakfast()
when "Wednesday" then go_to_the_park()
when "Saturday"
if day is bingo_day
go_to_bingo()
go_dancing()
when "Sun" then go_to_church()
when "Sunday" then go_to_church()
else go_to_work()

View File

@@ -2,6 +2,6 @@ try
all_hell_breaks_loose()
cats_and_dogs_living_together()
catch error
print error
print(error)
finally
clean_up()

View File

@@ -1,10 +1,5 @@
# Econ 101
if this.studying_economics
while supply > demand then buy()
while supply < demand then sell()
while demand > supply
sell()
restock()
# Nursery Rhyme
num: 6
lyrics: while num -= 1
num + " little monkeys, jumping on the bed.
One fell out and bumped his head."
while supply > demand then buy()

147
documentation/css/amy.css Normal file
View File

@@ -0,0 +1,147 @@
pre.amy .PolymorphicVariants {
color: #60B0FF;
font-style: italic;
}
pre.amy .KeywordDecorator {
color: #D0D0FF;
}
pre.amy .Punctuation {
color: #805080;
}
pre.amy .InheritedClass {
}
pre.amy .InvalidDepricated {
background-color: #CC66FF;
color: #200020;
}
pre.amy .LibraryVariable {
}
pre.amy .TokenReferenceOcamlyacc {
color: #3CB0D0;
}
pre.amy .Storage {
color: #B0FFF0;
}
pre.amy .KeywordOperator {
color: #A0A0FF;
}
pre.amy .CharacterConstant {
color: #666666;
}
pre.amy .line-numbers {
background-color: #800000;
color: #000000;
}
pre.amy .ClassName {
color: #70E080;
}
pre.amy .Int64Constant {
font-style: italic;
}
pre.amy .NonTerminalReferenceOcamlyacc {
color: #C0F0F0;
}
pre.amy .TokenDefinitionOcamlyacc {
color: #3080A0;
}
pre.amy .ClassType {
color: #70E0A0;
}
pre.amy .ControlKeyword {
color: #80A0FF;
}
pre.amy .LineNumberDirectives {
text-decoration: underline;
color: #C080C0;
}
pre.amy .FloatingPointConstant {
text-decoration: underline;
}
pre.amy .Int32Constant {
font-weight: bold;
}
pre.amy .TagName {
color: #009090;
}
pre.amy .ModuleTypeDefinitions {
text-decoration: underline;
color: #B000B0;
}
pre.amy .Integer {
color: #7090B0;
}
pre.amy .Camlp4TempParser {
}
pre.amy .InvalidIllegal {
font-weight: bold;
background-color: #FFFF00;
color: #400080;
}
pre.amy .LibraryConstant {
background-color: #200020;
}
pre.amy .ModuleDefinitions {
color: #B000B0;
}
pre.amy .Variants {
color: #60B0FF;
}
pre.amy .CompilerDirectives {
color: #C080C0;
}
pre.amy .FloatingPointInfixOperator {
text-decoration: underline;
}
pre.amy .BuiltInConstant1 {
}
pre.amy {
background-color: #200020;
color: #D0D0FF;
}
pre.amy .FunctionArgument {
color: #80B0B0;
}
pre.amy .FloatingPointPrefixOperator {
text-decoration: underline;
}
pre.amy .NativeintConstant {
font-weight: bold;
}
pre.amy .BuiltInConstant {
color: #707090;
}
pre.amy .BooleanConstant {
color: #8080A0;
}
pre.amy .LibraryClassType {
}
pre.amy .TagAttribute {
}
pre.amy .Keyword {
color: #A080FF;
}
pre.amy .UserDefinedConstant {
}
pre.amy .String {
color: #999999;
}
pre.amy .Camlp4Code {
background-color: #350060;
}
pre.amy .NonTerminalDefinitionOcamlyacc {
color: #90E0E0;
}
pre.amy .FunctionName {
color: #50A0A0;
}
pre.amy .SupportModules {
color: #A00050;
}
pre.amy .Variable {
color: #008080;
}
pre.amy .Comment {
background-color: #200020;
color: #404080;
font-style: italic;
}

View File

@@ -1,29 +1,29 @@
body {
font-size: 14px;
line-height: 20px;
background: #f3f3f9;
color: #191933;
font-family: Arial, Helvetica, sans-serif;
}
div.container {
width: 950px;
margin: 100px 0 50px 50px;
width: 850px;
margin: 50px 0 50px 50px;
}
p, li {
p {
padding-left: 13px;
width: 625px;
}
a {
color: #000055;
}
h1, h2, h3, h4, h5, h6 {
padding-left: 13px;
margin-top: 40px;
}
br.clear {
height: 0;
clear: both;
}
ul {
padding-left: 20px;
}
b.header {
color: #000055;
display: block;
@@ -31,7 +31,7 @@ b.header {
font-size: 16px;
}
li {
margin-bottom: 10px;
margin-bottom: 7px;
}
table {
margin: 16px 0 0 13px; padding: 0;
@@ -43,7 +43,7 @@ table {
td {
padding: 9px 15px 9px 0;
}
code, pre, tt, textarea {
code, pre, tt {
font-family: Monaco, Consolas, "Lucida Console", monospace;
font-size: 12px;
line-height: 18px;
@@ -63,15 +63,10 @@ code, pre, tt, textarea {
padding: 3px 0 3px 12px;
font-size: 12px;
}
pre.no_bar {
border-left: 0;
margin-left: 0;
padding-left: 0;
}
div.code {
position: relative;
border: 1px solid #cacaca;
background: #fafaff;
background: #fff;
padding: 7px 0 10px 0;
-moz-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px;
-webkit-box-shadow: 0px 0px 7px #cacaca;
@@ -80,188 +75,13 @@ div.code {
position: absolute;
right: 8px; bottom: 8px;
}
div.code pre, div.code textarea {
div.code pre {
float: left;
width: 450px;
background: #fafaff;
width: 410px;
border-left: 1px dotted #559;
padding: 0 0 0 12px;
margin: 0;
}
div.code pre:first-child {
border-left: 0;
}
#fadeout {
z-index: 50;
position: fixed;
left: 0; top: 0; right: 0;
height: 100px;
background: -webkit-gradient(linear, left top, left bottom, from(rgba(255, 255, 255, 255)), to(rgba(255, 255, 255, 0)));
background: -moz-linear-gradient(top, rgba(255, 255, 255, 255), rgba(255, 255, 255, 0));
}
#flybar {
position: fixed;
z-index: 100;
height: 50px;
min-width: 490px;
left: 40px; right: 40px; top: 25px;
background: #ddd;
padding-left: 235px;
background: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5), to(#d0d0d0));
background: -moz-linear-gradient(top, #f5f5f5, #d0d0d0);
filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#F5F5F5', EndColorStr='#D0D0D0');
-webkit-border-radius: 20px; -moz-border-radius: 20px; border-radius: 20px;
-webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
}
#logo {
display: block;
width: 215px; height: 50px;
background: url('../images/logo.png');
position: absolute;
top: 0px; left: 10px;
}
#error {
position: absolute;
-webkit-border-radius: 6px; -moz-border-radius: 6px; border-radius: 6px;
right: 15px; top: 15px; left: 722px;
height: 15px;
padding: 2px 5px;
background: #fdcdcc;
color: #864544;
border: 1px solid #864544;
font: 10px/15px Arial;
overflow: hidden;
text-transform: uppercase;
}
.navigation {
height: 50px;
font: bold 11px/50px Arial;
text-transform: uppercase;
position: relative;
float: left;
padding: 0 20px;
border: 1px solid #bbb;
border-top: 0; border-bottom: 0; border-left-width: 0;
cursor: pointer;
}
body.full_screen .navigation {
position: static;
}
.navigation.toc {
border-left-width: 1px;
}
.navigation:hover,
.navigation.active {
background: #d0d0d0;
background: -webkit-gradient(linear, left top, left bottom, from(#f0f0f0), to(#c0c0c0));
background: -moz-linear-gradient(top, #f0f0f0, #c0c0c0);
filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#F0F0F0', EndColorStr='#C0C0C0');
}
.navigation .contents {
display: none;
position: absolute;
background: #fff;
top: 50px; left: 0;
padding: 5px 0;
-webkit-border-radius: 5px; -moz-border-radius: 5px; border-radius: 5px;
-webkit-border-top-left-radius: 0; -moz-border-radius-topleft: 0;
-webkit-border-top-right-radius: 0; -moz-border-radius-topright: 0;
-webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
}
.navigation.active .contents {
display: block;
}
.navigation .contents.repl_wrapper {
left: -162px;
width: 700px;
padding: 0;
}
body.full_screen .navigation .contents.repl_wrapper {
position: fixed;
width: auto; height: auto;
left: 60px; top: 75px; right: 60px; bottom: 30px;
}
.navigation .contents.repl_wrapper .code {
-webkit-box-shadow: none; -moz-box-shadow: none;
background: transparent;
border: 0;
position: static;
}
body.full_screen .navigation .contents.repl_wrapper .code {
height: 100%;
padding: 0; margin: 0;
}
.navigation .code button {
bottom: 10px;
text-transform: none;
}
.navigation .full_screen, .navigation .minimize {
right: auto;
left: 10px;
display: none;
}
body.minimized .full_screen, body.full_screen .minimize {
display: inline;
}
.navigation .contents a {
display: block;
width: 290px;
text-transform: none;
text-decoration: none;
font-weight: normal;
height: 12px;
line-height: 12px;
padding: 4px 10px;
}
.navigation .contents a:hover {
background: #f0f0f0;
}
.bookmark {
display: block;
width: 0; height: 0;
position: relative;
top: -90px;
}
#repl_source, #repl_results {
background: transparent;
outline: none;
margin: 5px 0 20px;
}
#repl_source_wrap {
margin-left: 5px;
height: 250px;
width: 307px;
position: relative;
float: left;
}
#repl_source {
width: 96%;
height: 100%;
border: 0;
resize: none;
}
#repl_results {
font-family: Monaco, Consolas, "Lucida Console", monospace;
text-transform: none;
font-weight: normal;
height: 260px;
margin-bottom: 25px;
overflow-y: auto;
width: 370px;
}
body.full_screen #repl_results, body.full_screen #repl_source_wrap {
width: auto; height: auto;
position: absolute;
margin-bottom: 0;
top: 10px; left: 10px; right: 10px; bottom: 40px;
}
body.full_screen #repl_source_wrap {
right: 50%;
}
body.full_screen #repl_results {
left: 50%;
}
}

View File

@@ -28,7 +28,6 @@ pre.idle .LibraryConstant {
color: #A535AE;
}
pre.idle .FunctionArgument {
color: #0076ad;
}
pre.idle .BuiltInConstant {
color: #A535AE;
@@ -57,7 +56,6 @@ pre.idle .FunctionName {
color: #21439C;
}
pre.idle .Variable {
color: #A535AE;
}
pre.idle .Comment {
color: #919191;

View File

@@ -1,43 +0,0 @@
<!DOCTYPE html> <html> <head> <title>cake.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> cake.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p><code>cake</code> is a simplified version of <a href="http://www.gnu.org/software/make/">Make</a>
(<a href="http://rake.rubyforge.org/">Rake</a>, <a href="http://github.com/280north/jake">Jake</a>)
for CoffeeScript. You define tasks with names and descriptions in a Cakefile,
and can call them from the command line, or invoke them from other tasks.</p>
<p>Running <code>cake</code> with no arguments will print out a list of all the tasks in the
current directory's Cakefile.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>External dependencies.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">fs: </span> <span class="nx">require</span> <span class="s1">&#39;fs&#39;</span>
<span class="nv">path: </span> <span class="nx">require</span> <span class="s1">&#39;path&#39;</span>
<span class="nv">helpers: </span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./helpers&#39;</span><span class="p">).</span><span class="nx">helpers</span>
<span class="nv">optparse: </span> <span class="nx">require</span> <span class="s1">&#39;./optparse&#39;</span>
<span class="nv">CoffeeScript: </span><span class="nx">require</span> <span class="s1">&#39;./coffee-script&#39;</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Keep track of the list of defined tasks, the accepted options, and so on.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">tasks: </span><span class="p">{}</span>
<span class="nv">options: </span><span class="p">{}</span>
<span class="nv">switches: </span><span class="p">[]</span>
<span class="nv">oparse: </span><span class="kc">null</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Mixin the top-level Cake functions for Cakefiles to use directly.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">helpers</span><span class="p">.</span><span class="nx">extend</span> <span class="nx">global</span><span class="p">,</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Define a Cake task with a short name, a sentence description,
and the function to run as the action itself.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">task: </span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">description</span><span class="p">,</span> <span class="nx">action</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">tasks</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="p">{</span><span class="nv">name: </span><span class="nx">name</span><span class="p">,</span> <span class="nv">description: </span><span class="nx">description</span><span class="p">,</span> <span class="nv">action: </span><span class="nx">action</span><span class="p">}</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Define an option that the Cakefile accepts. The parsed options hash,
containing all of the command-line options passed, will be made available
as the first argument to the action.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">option: </span><span class="p">(</span><span class="nx">letter</span><span class="p">,</span> <span class="nx">flag</span><span class="p">,</span> <span class="nx">description</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">switches</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="nx">letter</span><span class="p">,</span> <span class="nx">flag</span><span class="p">,</span> <span class="nx">description</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>Invoke another task in the current Cakefile.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">invoke: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">no_such_task</span> <span class="nx">name</span> <span class="nx">unless</span> <span class="nx">tasks</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span>
<span class="nx">tasks</span><span class="p">[</span><span class="nx">name</span><span class="p">].</span><span class="nx">action</span> <span class="nx">options</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Run <code>cake</code>. Executes all of the tasks you pass, in order. Note that Node's
asynchrony may cause tasks to execute in a different order than you'd expect.
If no tasks are passed, print the help screen.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.run: </span><span class="o">-&gt;</span>
<span class="nx">path</span><span class="p">.</span><span class="nx">exists</span> <span class="s1">&#39;Cakefile&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">exists</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="p">(</span><span class="s2">&quot;Cakefile not found in ${process.cwd()}&quot;</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">exists</span>
<span class="nv">args: </span><span class="nx">process</span><span class="p">.</span><span class="nx">argv</span><span class="p">[</span><span class="mi">2</span><span class="p">...</span><span class="nx">process</span><span class="p">.</span><span class="nx">argv</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span>
<span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">fs</span><span class="p">.</span><span class="nx">readFileSync</span><span class="p">(</span><span class="s1">&#39;Cakefile&#39;</span><span class="p">),</span> <span class="p">{</span><span class="nv">source: </span><span class="s1">&#39;Cakefile&#39;</span><span class="p">}</span>
<span class="nv">oparse: </span><span class="k">new</span> <span class="nx">optparse</span><span class="p">.</span><span class="nx">OptionParser</span> <span class="nx">switches</span>
<span class="k">return</span> <span class="nx">print_tasks</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">args</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">options: </span><span class="nx">oparse</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">args</span><span class="p">)</span>
<span class="nx">invoke</span> <span class="nx">arg</span> <span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Display the list of Cake tasks in a format similar to <code>rake -T</code></p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">print_tasks: </span><span class="o">-&gt;</span>
<span class="nx">puts</span> <span class="s1">&#39;&#39;</span>
<span class="k">for</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">task</span> <span class="k">of</span> <span class="nx">tasks</span>
<span class="nv">spaces: </span><span class="mi">20</span> <span class="o">-</span> <span class="nx">name</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">spaces: </span><span class="k">if</span> <span class="nx">spaces</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="k">then</span> <span class="p">(</span><span class="s1">&#39; &#39;</span> <span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">..</span><span class="nx">spaces</span><span class="p">]).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nx">puts</span> <span class="s2">&quot;cake $name$spaces # ${task.description}&quot;</span>
<span class="nx">puts</span> <span class="nx">oparse</span><span class="p">.</span><span class="nx">help</span><span class="p">()</span> <span class="k">if</span> <span class="nx">switches</span><span class="p">.</span><span class="nx">length</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>Print an error and exit when attempting to all an undefined task.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">no_such_task: </span><span class="p">(</span><span class="nx">task</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">writeError</span> <span class="s2">&quot;No such task: \&quot;$task\&quot;\n&quot;</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">exit</span> <span class="mi">1</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,65 +0,0 @@
<!DOCTYPE html> <html> <head> <title>coffee-script.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> coffee-script.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>CoffeeScript can be used both on the server, as a command-line compiler based
on Node.js/V8, or to run CoffeeScripts directly in the browser. This module
contains the main entry functions for tokenzing, parsing, and compiling source
CoffeeScript into JavaScript.</p>
<p>If included on a webpage, it will automatically sniff out, compile, and
execute all scripts present in <code>text/coffeescript</code> tags.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Set up dependencies correctly for both the server and the browser.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">if</span> <span class="nx">process</span><span class="o">?</span>
<span class="nv">path: </span> <span class="nx">require</span> <span class="s1">&#39;path&#39;</span>
<span class="nv">Lexer: </span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./lexer&#39;</span><span class="p">).</span><span class="nx">Lexer</span>
<span class="nv">parser: </span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./parser&#39;</span><span class="p">).</span><span class="nx">parser</span>
<span class="nv">helpers: </span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./helpers&#39;</span><span class="p">).</span><span class="nx">helpers</span>
<span class="nx">helpers</span><span class="p">.</span><span class="nx">extend</span> <span class="nx">global</span><span class="p">,</span> <span class="nx">require</span> <span class="s1">&#39;./nodes&#39;</span>
<span class="k">if</span> <span class="nx">require</span><span class="p">.</span><span class="nx">registerExtension</span>
<span class="nx">require</span><span class="p">.</span><span class="nx">registerExtension</span> <span class="s1">&#39;.coffee&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">content</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">compile</span> <span class="nx">content</span>
<span class="k">else</span>
<span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span><span class="p">.</span><span class="nv">CoffeeScript: </span><span class="p">{}</span>
<span class="nv">Lexer: </span> <span class="k">this</span><span class="p">.</span><span class="nx">Lexer</span>
<span class="nv">parser: </span> <span class="k">this</span><span class="p">.</span><span class="nx">parser</span>
<span class="nv">helpers: </span> <span class="k">this</span><span class="p">.</span><span class="nx">helpers</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>The current CoffeeScript version number.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.VERSION: </span><span class="s1">&#39;0.5.6&#39;</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Instantiate a Lexer for our use here.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">lexer: </span><span class="k">new</span> <span class="nx">Lexer</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Compile a string of CoffeeScript code to JavaScript, using the Coffee/Jison
compiler.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.compile: compile: </span><span class="p">(</span><span class="nx">code</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">options: </span><span class="o">or</span> <span class="p">{}</span>
<span class="k">try</span>
<span class="p">(</span><span class="nx">parser</span><span class="p">.</span><span class="nx">parse</span> <span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="nx">code</span><span class="p">).</span><span class="nx">compile</span> <span class="nx">options</span>
<span class="k">catch</span> <span class="nx">err</span>
<span class="nv">err.message: </span><span class="s2">&quot;In ${options.source}, ${err.message}&quot;</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">source</span>
<span class="k">throw</span> <span class="nx">err</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Tokenize a string of CoffeeScript code, and return the array of tokens.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.tokens: </span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="nx">code</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>Tokenize and parse a string of CoffeeScript code, and return the AST. You can
then compile it by calling <code>.compile()</code> on the root, or traverse it by using
<code>.traverse()</code> with a callback.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.nodes: </span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">parser</span><span class="p">.</span><span class="nx">parse</span> <span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="nx">code</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Compile and execute a string of CoffeeScript (on the server), correctly
setting <code>__filename</code>, <code>__dirname</code>, and relative <code>require()</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.run: </span><span class="p">((</span><span class="nx">code</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">module.filename: __filename: </span><span class="nx">options</span><span class="p">.</span><span class="nx">source</span>
<span class="nv">__dirname: </span><span class="nx">path</span><span class="p">.</span><span class="nx">dirname</span> <span class="nx">__filename</span>
<span class="nb">eval</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">options</span>
<span class="p">)</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Extend CoffeeScript with a custom language extension. It should hook in to
the <strong>Lexer</strong> (as a peer of any of the lexer's tokenizing methods), and
push a token on to the stack that contains a <strong>Node</strong> as the value (as a
peer of the nodes in <a href="nodes.html">nodes.coffee</a>).</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.extend: </span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">Lexer</span><span class="p">.</span><span class="nx">extensions</span><span class="p">.</span><span class="nx">push</span> <span class="nx">func</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>The real Lexer produces a generic stream of tokens. This object provides a
thin wrapper around it, compatible with the Jison API. We can then pass it
directly as a "Jison lexer".</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">parser.lexer: </span><span class="p">{</span>
<span class="nv">lex: </span><span class="o">-&gt;</span>
<span class="nv">token: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="err">@</span><span class="nx">pos</span><span class="p">]</span> <span class="o">or</span> <span class="p">[</span><span class="s2">&quot;&quot;</span><span class="p">]</span>
<span class="err">@</span><span class="nv">pos: </span><span class="o">+</span> <span class="mi">1</span>
<span class="k">this</span><span class="p">.</span><span class="nv">yylineno: </span><span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
<span class="k">this</span><span class="p">.</span><span class="nv">yytext: </span> <span class="nx">token</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="nv">setInput: </span><span class="p">(</span><span class="nx">tokens</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">tokens: </span><span class="nx">tokens</span>
<span class="err">@</span><span class="nv">pos: </span><span class="mi">0</span>
<span class="nv">upcomingInput: </span><span class="o">-&gt;</span> <span class="s2">&quot;&quot;</span>
<span class="nv">showPosition: </span><span class="o">-&gt;</span> <span class="err">@</span><span class="nx">pos</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Activate CoffeeScript in the browser by having it compile and evaluate
all script tags with a content-type of <code>text/coffeescript</code>. This happens
on page load. Unfortunately, the text contents of remote scripts cannot be
accessed from the browser, so only inline script tags will work.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">if</span> <span class="nb">document</span><span class="o">?</span> <span class="o">and</span> <span class="nb">document</span><span class="p">.</span><span class="nx">getElementsByTagName</span>
<span class="nv">process_scripts: </span><span class="o">-&gt;</span>
<span class="k">for</span> <span class="nx">tag</span> <span class="k">in</span> <span class="nb">document</span><span class="p">.</span><span class="nx">getElementsByTagName</span><span class="p">(</span><span class="s1">&#39;script&#39;</span><span class="p">)</span> <span class="k">when</span> <span class="nx">tag</span><span class="p">.</span><span class="nx">type</span> <span class="o">is</span> <span class="s1">&#39;text/coffeescript&#39;</span>
<span class="nb">eval</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">tag</span><span class="p">.</span><span class="nx">innerHTML</span>
<span class="k">if</span> <span class="nb">window</span><span class="p">.</span><span class="nx">addEventListener</span>
<span class="nb">window</span><span class="p">.</span><span class="nx">addEventListener</span> <span class="s1">&#39;load&#39;</span><span class="p">,</span> <span class="nx">process_scripts</span><span class="p">,</span> <span class="kc">false</span>
<span class="k">else</span> <span class="k">if</span> <span class="nb">window</span><span class="p">.</span><span class="nx">attachEvent</span>
<span class="nb">window</span><span class="p">.</span><span class="nx">attachEvent</span> <span class="s1">&#39;onload&#39;</span><span class="p">,</span> <span class="nx">process_scripts</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

View File

@@ -1,115 +0,0 @@
<!DOCTYPE html> <html> <head> <title>command.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> command.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>The <code>coffee</code> utility. Handles command-line compilation of CoffeeScript
into various forms: saved into <code>.js</code> files or printed to stdout, piped to
<a href="http://javascriptlint.com/">JSLint</a> or recompiled every time the source is
saved, printed as a token stream or as the syntax tree, or launch an
interactive REPL.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>External dependencies.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">fs: </span> <span class="nx">require</span> <span class="s1">&#39;fs&#39;</span>
<span class="nv">path: </span> <span class="nx">require</span> <span class="s1">&#39;path&#39;</span>
<span class="nv">optparse: </span> <span class="nx">require</span> <span class="s1">&#39;./optparse&#39;</span>
<span class="nv">CoffeeScript: </span><span class="nx">require</span> <span class="s1">&#39;./coffee-script&#39;</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>The help banner that is printed when <code>coffee</code> is called without arguments.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">BANNER: </span><span class="s1">&#39;&#39;&#39;</span>
<span class="s1"> coffee compiles CoffeeScript source files into JavaScript.</span>
<span class="s1"> Usage:</span>
<span class="s1"> coffee path/to/script.coffee</span>
<span class="s1"> &#39;&#39;&#39;</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>The list of all the valid option flags that <code>coffee</code> knows how to handle.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">SWITCHES: </span><span class="p">[</span>
<span class="p">[</span><span class="s1">&#39;-c&#39;</span><span class="p">,</span> <span class="s1">&#39;--compile&#39;</span><span class="p">,</span> <span class="s1">&#39;compile to JavaScript and save as .js files&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-i&#39;</span><span class="p">,</span> <span class="s1">&#39;--interactive&#39;</span><span class="p">,</span> <span class="s1">&#39;run an interactive CoffeeScript REPL&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-o&#39;</span><span class="p">,</span> <span class="s1">&#39;--output [DIR]&#39;</span><span class="p">,</span> <span class="s1">&#39;set the directory for compiled JavaScript&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-w&#39;</span><span class="p">,</span> <span class="s1">&#39;--watch&#39;</span><span class="p">,</span> <span class="s1">&#39;watch scripts for changes, and recompile&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-p&#39;</span><span class="p">,</span> <span class="s1">&#39;--print&#39;</span><span class="p">,</span> <span class="s1">&#39;print the compiled JavaScript to stdout&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-l&#39;</span><span class="p">,</span> <span class="s1">&#39;--lint&#39;</span><span class="p">,</span> <span class="s1">&#39;pipe the compiled JavaScript through JSLint&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-s&#39;</span><span class="p">,</span> <span class="s1">&#39;--stdio&#39;</span><span class="p">,</span> <span class="s1">&#39;listen for and compile scripts over stdio&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-e&#39;</span><span class="p">,</span> <span class="s1">&#39;--eval&#39;</span><span class="p">,</span> <span class="s1">&#39;compile a string from the command line&#39;</span><span class="p">]</span>
<span class="p">[</span> <span class="s1">&#39;--no-wrap&#39;</span><span class="p">,</span> <span class="s1">&#39;compile without the top-level function wrapper&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-t&#39;</span><span class="p">,</span> <span class="s1">&#39;--tokens&#39;</span><span class="p">,</span> <span class="s1">&#39;print the tokens that the lexer produces&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-n&#39;</span><span class="p">,</span> <span class="s1">&#39;--nodes&#39;</span><span class="p">,</span> <span class="s1">&#39;print the parse tree that Jison produces&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-v&#39;</span><span class="p">,</span> <span class="s1">&#39;--version&#39;</span><span class="p">,</span> <span class="s1">&#39;display CoffeeScript version&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s1">&#39;-h&#39;</span><span class="p">,</span> <span class="s1">&#39;--help&#39;</span><span class="p">,</span> <span class="s1">&#39;display this help message&#39;</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Top-level objects shared by all the functions.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">options: </span><span class="p">{}</span>
<span class="nv">sources: </span><span class="p">[]</span>
<span class="nv">option_parser: </span><span class="kc">null</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Run <code>coffee</code> by parsing passed options and determining what action to take.
Many flags cause us to divert before compiling anything. Flags passed after
<code>--</code> will be passed verbatim to your script as arguments in <code>process.argv</code></p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.run: </span><span class="o">-&gt;</span>
<span class="nx">parse_options</span><span class="p">()</span>
<span class="k">return</span> <span class="nx">usage</span><span class="p">()</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">help</span>
<span class="k">return</span> <span class="nx">version</span><span class="p">()</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">version</span>
<span class="k">return</span> <span class="nx">require</span> <span class="s1">&#39;./repl&#39;</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">interactive</span>
<span class="k">return</span> <span class="nx">compile_stdio</span><span class="p">()</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">stdio</span>
<span class="k">return</span> <span class="nx">compile_script</span> <span class="s1">&#39;console&#39;</span><span class="p">,</span> <span class="nx">sources</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nb">eval</span>
<span class="k">return</span> <span class="nx">usage</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">sources</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">separator: </span><span class="nx">sources</span><span class="p">.</span><span class="nx">indexOf</span> <span class="s1">&#39;--&#39;</span>
<span class="nv">flags: </span><span class="p">[]</span>
<span class="k">if</span> <span class="nx">separator</span> <span class="o">&gt;=</span> <span class="mi">0</span>
<span class="nv">flags: </span><span class="nx">sources</span><span class="p">[(</span><span class="nx">separator</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)...</span><span class="nx">sources</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span>
<span class="nv">sources: </span><span class="nx">sources</span><span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">separator</span><span class="p">]</span>
<span class="nv">process.ARGV: process.argv: </span><span class="nx">flags</span>
<span class="nx">watch_scripts</span><span class="p">()</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">watch</span>
<span class="nx">compile_scripts</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>Asynchronously read in each CoffeeScript in a list of source files and
compile them.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">compile_scripts: </span><span class="o">-&gt;</span>
<span class="nv">compile: </span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">path</span><span class="p">.</span><span class="nx">exists</span> <span class="nx">source</span><span class="p">,</span> <span class="p">(</span><span class="nx">exists</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;File not found: $source&quot;</span> <span class="nx">unless</span> <span class="nx">exists</span>
<span class="nx">fs</span><span class="p">.</span><span class="nx">readFile</span> <span class="nx">source</span><span class="p">,</span> <span class="p">(</span><span class="nx">err</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">compile_script</span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span>
<span class="nx">compile</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="k">for</span> <span class="nx">source</span> <span class="k">in</span> <span class="nx">sources</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Compile a single source script, containing the given code, according to the
requested options. Both compile_scripts and watch_scripts share this method
in common. If evaluating the script directly sets <code>__filename</code>, <code>__dirname</code>
and <code>module.filename</code> to be correct relative to the script's path.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">compile_script: </span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o: </span><span class="nx">options</span>
<span class="nv">code_opts: </span><span class="nx">compile_options</span> <span class="nx">source</span>
<span class="k">try</span>
<span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">tokens</span> <span class="k">then</span> <span class="nx">print_tokens</span> <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">tokens</span> <span class="nx">code</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">nodes</span> <span class="k">then</span> <span class="nx">puts</span> <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">nodes</span><span class="p">(</span><span class="nx">code</span><span class="p">).</span><span class="nx">toString</span><span class="p">()</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">run</span> <span class="k">then</span> <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">code_opts</span>
<span class="k">else</span>
<span class="nv">js: </span><span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">code_opts</span>
<span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">print</span> <span class="k">then</span> <span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">write</span> <span class="nx">js</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">compile</span> <span class="k">then</span> <span class="nx">write_js</span> <span class="nx">source</span><span class="p">,</span> <span class="nx">js</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">lint</span> <span class="k">then</span> <span class="nx">lint</span> <span class="nx">js</span>
<span class="k">catch</span> <span class="nx">err</span>
<span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">watch</span> <span class="k">then</span> <span class="nx">puts</span> <span class="nx">err</span><span class="p">.</span><span class="nx">message</span> <span class="k">else</span> <span class="k">throw</span> <span class="nx">err</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Attach the appropriate listeners to compile scripts incoming over <strong>stdin</strong>,
and write them back to <strong>stdout</strong>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">compile_stdio: </span><span class="o">-&gt;</span>
<span class="nv">code: </span><span class="s1">&#39;&#39;</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">open</span><span class="p">()</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;data&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">code: </span><span class="o">+</span> <span class="nx">string</span> <span class="k">if</span> <span class="nx">string</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;close&#39;</span><span class="p">,</span> <span class="o">-&gt;</span>
<span class="nx">compile_script</span> <span class="s1">&#39;stdio&#39;</span><span class="p">,</span> <span class="nx">code</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>Watch a list of source CoffeeScript files using <code>fs.watchFile</code>, recompiling
them every time the files are updated. May be used in combination with other
options, such as <code>--lint</code> or <code>--print</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">watch_scripts: </span><span class="o">-&gt;</span>
<span class="nv">watch: </span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">fs</span><span class="p">.</span><span class="nx">watchFile</span> <span class="nx">source</span><span class="p">,</span> <span class="p">{</span><span class="nv">persistent: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">interval: </span><span class="mi">500</span><span class="p">},</span> <span class="p">(</span><span class="nx">curr</span><span class="p">,</span> <span class="nx">prev</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="k">if</span> <span class="nx">curr</span><span class="p">.</span><span class="nx">mtime</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">is</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">mtime</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span>
<span class="nx">fs</span><span class="p">.</span><span class="nx">readFile</span> <span class="nx">source</span><span class="p">,</span> <span class="p">(</span><span class="nx">err</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">compile_script</span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span>
<span class="nx">watch</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="k">for</span> <span class="nx">source</span> <span class="k">in</span> <span class="nx">sources</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Write out a JavaScript source file with the compiled code. By default, files
are written out in <code>cwd</code> as <code>.js</code> files with the same name, but the output
directory can be customized with <code>--output</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">write_js: </span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">js</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">filename: </span><span class="nx">path</span><span class="p">.</span><span class="nx">basename</span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">path</span><span class="p">.</span><span class="nx">extname</span><span class="p">(</span><span class="nx">source</span><span class="p">))</span> <span class="o">+</span> <span class="s1">&#39;.js&#39;</span>
<span class="nv">dir: </span> <span class="nx">options</span><span class="p">.</span><span class="nx">output</span> <span class="o">or</span> <span class="nx">path</span><span class="p">.</span><span class="nx">dirname</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span>
<span class="nv">js_path: </span> <span class="nx">path</span><span class="p">.</span><span class="nx">join</span> <span class="nx">dir</span><span class="p">,</span> <span class="nx">filename</span>
<span class="nx">fs</span><span class="p">.</span><span class="nx">writeFile</span> <span class="nx">js_path</span><span class="p">,</span> <span class="nx">js</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-12">#</a> </div> <p>Pipe compiled JS through JSLint (requires a working <code>jsl</code> command), printing
any errors or warnings that arise.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">lint: </span><span class="p">(</span><span class="nx">js</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">jsl: </span><span class="nx">process</span><span class="p">.</span><span class="nx">createChildProcess</span><span class="p">(</span><span class="s1">&#39;jsl&#39;</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;-nologo&#39;</span><span class="p">,</span> <span class="s1">&#39;-stdin&#39;</span><span class="p">])</span>
<span class="nx">jsl</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;output&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">puts</span> <span class="nx">result</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/g</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">if</span> <span class="nx">result</span>
<span class="nx">jsl</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;error&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">puts</span> <span class="nx">result</span> <span class="k">if</span> <span class="nx">result</span>
<span class="nx">jsl</span><span class="p">.</span><span class="nx">write</span> <span class="nx">js</span>
<span class="nx">jsl</span><span class="p">.</span><span class="nx">close</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-13">#</a> </div> <p>Pretty-print a stream of tokens.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">print_tokens: </span><span class="p">(</span><span class="nx">tokens</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">strings: </span><span class="k">for</span> <span class="nx">token</span> <span class="k">in</span> <span class="nx">tokens</span>
<span class="p">[</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">token</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">toString</span><span class="p">().</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/</span><span class="p">,</span> <span class="s1">&#39;\\n&#39;</span><span class="p">)]</span>
<span class="s2">&quot;[$tag $value]&quot;</span>
<span class="nx">puts</span> <span class="nx">strings</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39; &#39;</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-14">#</a> </div> <p>Use the <a href="optparse.html">OptionParser module</a> to extract all options from
<code>process.argv</code> that are specified in <code>SWITCHES</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">parse_options: </span><span class="o">-&gt;</span>
<span class="nv">option_parser: </span><span class="k">new</span> <span class="nx">optparse</span><span class="p">.</span><span class="nx">OptionParser</span> <span class="nx">SWITCHES</span><span class="p">,</span> <span class="nx">BANNER</span>
<span class="nv">o: options: </span> <span class="nx">option_parser</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">process</span><span class="p">.</span><span class="nx">argv</span><span class="p">)</span>
<span class="nv">options.run: </span> <span class="o">not</span> <span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">compile</span> <span class="o">or</span> <span class="nx">o</span><span class="p">.</span><span class="nx">print</span> <span class="o">or</span> <span class="nx">o</span><span class="p">.</span><span class="nx">lint</span><span class="p">)</span>
<span class="nv">options.print: </span><span class="o">!!</span> <span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">print</span> <span class="o">or</span> <span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nb">eval</span> <span class="o">or</span> <span class="nx">o</span><span class="p">.</span><span class="nx">stdio</span> <span class="o">and</span> <span class="nx">o</span><span class="p">.</span><span class="nx">compile</span><span class="p">))</span>
<span class="nv">sources: </span> <span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">[</span><span class="mi">2</span><span class="p">...</span><span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-15">#</a> </div> <p>The compile-time options to pass to the CoffeeScript compiler.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">compile_options: </span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o: </span><span class="p">{</span><span class="nv">source: </span><span class="nx">source</span><span class="p">}</span>
<span class="nx">o</span><span class="p">[</span><span class="s1">&#39;no_wrap&#39;</span><span class="p">]</span><span class="o">:</span> <span class="nx">options</span><span class="p">[</span><span class="s1">&#39;no-wrap&#39;</span><span class="p">]</span>
<span class="nx">o</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-16">#</a> </div> <p>Print the <code>--help</code> usage message and exit.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">usage: </span><span class="o">-&gt;</span>
<span class="nx">puts</span> <span class="nx">option_parser</span><span class="p">.</span><span class="nx">help</span><span class="p">()</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">exit</span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-17">#</a> </div> <p>Print the <code>--version</code> message and exit.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">version: </span><span class="o">-&gt;</span>
<span class="nx">puts</span> <span class="s2">&quot;CoffeeScript version ${CoffeeScript.VERSION}&quot;</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">exit</span> <span class="mi">0</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

View File

@@ -1,185 +0,0 @@
/*--------------------- Layout and Typography ----------------------------*/
body {
font-family: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
font-size: 16px;
line-height: 24px;
color: #252519;
margin: 0; padding: 0;
}
a {
color: #261a3b;
}
a:visited {
color: #261a3b;
}
p {
margin: 0 0 15px 0;
}
h1, h2, h3, h4, h5, h6 {
margin: 40px 0 15px 0;
}
h3, h4, h5, h6 {
margin-top: 20px;
}
#container {
position: relative;
}
#background {
position: fixed;
top: 0; left: 580px; right: 0; bottom: 0;
background: #f5f5ff;
border-left: 1px solid #e5e5ee;
z-index: -1;
}
#jump_to, #jump_page {
background: white;
-webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
-webkit-border-bottom-left-radius: 5px; -moz-border-radius-bottomleft: 5px;
font: 10px Arial;
text-transform: uppercase;
cursor: pointer;
text-align: right;
}
#jump_to, #jump_wrapper {
position: fixed;
right: 0; top: 0;
padding: 5px 10px;
}
#jump_wrapper {
padding: 0;
display: none;
}
#jump_to:hover #jump_wrapper {
display: block;
}
#jump_page {
padding: 5px 0 3px;
margin: 0 0 25px 25px;
}
#jump_page .source {
display: block;
padding: 5px 10px;
text-decoration: none;
border-top: 1px solid #eee;
}
#jump_page .source:hover {
background: #f5f5ff;
}
#jump_page .source:first-child {
}
table td {
border: 0;
outline: 0;
}
td.docs, th.docs {
max-width: 500px;
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<!DOCTYPE html> <html> <head> <title>grammar.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> grammar.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>The CoffeeScript parser is generated by <a href="http://github.com/zaach/jison">Jison</a>
from this grammar file. Jison is a bottom-up parser generator, similar in
style to <a href="http://www.gnu.org/software/bison">Bison</a>, implemented in JavaScript.
It can recognize <a href="http://en.wikipedia.org/wiki/LR_grammar">LALR(1), LR(0), SLR(1), and LR(1)</a>
type grammars. To create the Jison parser, we list the pattern to match
on the left-hand side, and the action to take (usually the creation of syntax
tree nodes) on the right. As the parser runs, it
shifts tokens from our token stream, from left to right, and
<a href="http://en.wikipedia.org/wiki/Bottom-up_parsing">attempts to match</a>
the token sequence against the rules below. When a match can be made, it
reduces into the <a href="http://en.wikipedia.org/wiki/Terminal_and_nonterminal_symbols">nonterminal</a>
(the enclosing name at the top), and we proceed from there.</p>
<p>If you run the <code>cake build:parser</code> command, Jison constructs a parse table
from our rules and saves it into <code>lib/parser.js</code>.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>The only dependency is on the <strong>Jison.Parser</strong>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">Parser: </span><span class="nx">require</span><span class="p">(</span><span class="s1">&#39;jison&#39;</span><span class="p">).</span><span class="nx">Parser</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <h2>Jison DSL</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Since we're going to be wrapped in a function by Jison in any case, if our
action immediately returns a value, we can optimize by removing the function
wrapper and just returning the value directly.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">unwrap: </span><span class="sr">/function\s*\(\)\s*\{\s*return\s*([\s\S]*);\s*\}/</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Our handy DSL for Jison grammar generation, thanks to
<a href="http://github.com/creationix">Tim Caswell</a>. For every rule in the grammar,
we pass the pattern-defining string, the action to run, and extra options,
optionally. If no action is specified, we simply pass the value of the
previous nonterminal.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">o: </span><span class="p">(</span><span class="nx">pattern_string</span><span class="p">,</span> <span class="nx">action</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="p">[</span><span class="nx">pattern_string</span><span class="p">,</span> <span class="s1">&#39;$$ = $1;&#39;</span><span class="p">,</span> <span class="nx">options</span><span class="p">]</span> <span class="nx">unless</span> <span class="nx">action</span>
<span class="nv">action: </span><span class="k">if</span> <span class="nv">match: </span><span class="p">(</span><span class="nx">action</span> <span class="o">+</span> <span class="s1">&#39;&#39;</span><span class="p">).</span><span class="nx">match</span><span class="p">(</span><span class="nx">unwrap</span><span class="p">)</span> <span class="k">then</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="s2">&quot;($action())&quot;</span>
<span class="p">[</span><span class="nx">pattern_string</span><span class="p">,</span> <span class="s2">&quot;$$ = $action;&quot;</span><span class="p">,</span> <span class="nx">options</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <h2>Grammatical Rules</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>In all of the rules that follow, you'll see the name of the nonterminal as
the key to a list of alternative matches. With each match's action, the
dollar-sign variables are provided by Jison as references to the value of
their numeric position, so in this rule:</p>
<pre><code>"Expression UNLESS Expression"
</code></pre>
<p><code>$1</code> would be the value of the first <code>Expression</code>, <code>$2</code> would be the token
for the <code>UNLESS</code> terminal, and <code>$3</code> would be the value of the second
<code>Expression</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">grammar: </span><span class="p">{</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>The <strong>Root</strong> is the top-level node in the syntax tree. Since we parse bottom-up,
all parsing must end here.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Root: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
<span class="nx">o</span> <span class="s2">&quot;TERMINATOR&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
<span class="nx">o</span> <span class="s2">&quot;Expressions&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Block TERMINATOR&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Any list of expressions or method body, seperated by line breaks or
semicolons.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Expressions: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;Expressions TERMINATOR Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expressions TERMINATOR&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>All the different types of expressions in our language. The basic unit of
CoffeeScript is the <strong>Expression</strong> -- you'll notice that there is no
"statement" nonterminal. Expressions serve as the building blocks
of many other rules, making them somewhat circular.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Expression: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Value&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Call&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Curry&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Code&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Operation&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Assign&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;If&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Try&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Throw&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Return&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;While&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;For&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Switch&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Extends&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Class&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Splat&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Existence&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Comment&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Extension&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>A an indented block of expressions. Note that the <a href="rewriter.html">Rewriter</a>
will convert some postfix forms into blocks for us, by adjusting the
token stream.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Block: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;INDENT Expressions OUTDENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;INDENT OUTDENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
<span class="nx">o</span> <span class="s2">&quot;TERMINATOR Comment&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-12">#</a> </div> <p>A literal identifier, a variable name or property.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Identifier: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;IDENTIFIER&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-13">#</a> </div> <p>Alphanumerics are separated from the other <strong>Literal</strong> matchers because
they can also serve as keys in object literals.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">AlphaNumeric: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;NUMBER&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="nx">o</span> <span class="s2">&quot;STRING&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-14">#</a> </div> <p>All of our immediate values. These can (in general), be passed straight
through and printed to JavaScript.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Literal: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;AlphaNumeric&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;JS&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="nx">o</span> <span class="s2">&quot;REGEX&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="nx">o</span> <span class="s2">&quot;BREAK&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="nx">o</span> <span class="s2">&quot;CONTINUE&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="nx">o</span> <span class="s2">&quot;TRUE&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
<span class="nx">o</span> <span class="s2">&quot;FALSE&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
<span class="nx">o</span> <span class="s2">&quot;YES&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
<span class="nx">o</span> <span class="s2">&quot;NO&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
<span class="nx">o</span> <span class="s2">&quot;ON&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
<span class="nx">o</span> <span class="s2">&quot;OFF&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-15">#</a> </div> <p>Assignment of a variable, property, or index to a value.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Assign: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Value ASSIGN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-16">#</a> </div> <p>Assignment when it happens within an object literal. The difference from
the ordinary <strong>Assign</strong> is that these allow numbers and strings as keys.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">AssignObj: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Identifier ASSIGN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">&#39;object&#39;</span>
<span class="nx">o</span> <span class="s2">&quot;AlphaNumeric ASSIGN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">&#39;object&#39;</span>
<span class="nx">o</span> <span class="s2">&quot;Comment&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-17">#</a> </div> <p>A return statement from a function body.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Return: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;RETURN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ReturnNode</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;RETURN&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ReturnNode</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">&#39;null&#39;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-18">#</a> </div> <p>A comment. Because CoffeeScript passes comments through to JavaScript, we
have to parse comments like any other construct, and identify all of the
positions in which they can occur in the grammar.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Comment: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;COMMENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CommentNode</span> <span class="nx">yytext</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-19">#</a> </div> <p><a href="http://jashkenas.github.com/coffee-script/#existence">The existential operator</a>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Existence: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Expression ?&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ExistenceNode</span> <span class="nx">$1</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-20">#</a> </div> <p>The <strong>Code</strong> node is the function literal. It's defined by an indented block
of <strong>Expressions</strong> preceded by a function arrow, with an optional parameter
list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Code: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;PARAM_START ParamList PARAM_END FuncGlyph Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CodeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span><span class="p">,</span> <span class="nx">$4</span>
<span class="nx">o</span> <span class="s2">&quot;FuncGlyph Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CodeNode</span> <span class="p">[],</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-21">#</a> </div> <p>CoffeeScript has two different symbols for functions. <code>-&gt;</code> is for ordinary
functions, and <code>=&gt;</code> is for functions bound to the current value of <em>this</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">FuncGlyph: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;-&gt;&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="s1">&#39;func&#39;</span>
<span class="nx">o</span> <span class="s2">&quot;=&gt;&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="s1">&#39;boundfunc&#39;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-22">#</a> </div> <p>The list of parameters that a function accepts can be of any length.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">ParamList: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[]</span>
<span class="nx">o</span> <span class="s2">&quot;Param&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;ParamList , Param&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-23">#</a> </div> <p>A single parameter in a function definition can be ordinary, or a splat
that hoovers up the remaining arguments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Param: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;PARAM&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
<span class="nx">o</span> <span class="s2">&quot;Param . . .&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">SplatNode</span> <span class="nx">$1</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-24">#</a> </div> <p>A splat that occurs outside of a parameter list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Splat: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Expression . . .&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">SplatNode</span> <span class="nx">$1</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-25">#</a> </div> <p>The types of things that can be treated as values -- assigned to, invoked
as functions, indexed into, named as a class, etc.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Value: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Identifier&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
<span class="nx">o</span> <span class="s2">&quot;Literal&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
<span class="nx">o</span> <span class="s2">&quot;Array&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
<span class="nx">o</span> <span class="s2">&quot;Object&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
<span class="nx">o</span> <span class="s2">&quot;Parenthetical&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
<span class="nx">o</span> <span class="s2">&quot;Range&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
<span class="nx">o</span> <span class="s2">&quot;This&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Value Accessor&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;Invocation Accessor&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-26">#</a> </div> <p>The general group of accessors into an object, by property, by prototype
or by array index or slice.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Accessor: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;PROPERTY_ACCESS Identifier&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;PROTOTYPE_ACCESS Identifier&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">&#39;prototype&#39;</span>
<span class="nx">o</span> <span class="s2">&quot;::&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="s1">&#39;prototype&#39;</span><span class="p">))</span>
<span class="nx">o</span> <span class="s2">&quot;SOAK_ACCESS Identifier&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">&#39;soak&#39;</span>
<span class="nx">o</span> <span class="s2">&quot;Index&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Slice&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">SliceNode</span> <span class="nx">$1</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-27"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-27">#</a> </div> <p>Indexing into an object or array using bracket notation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Index: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;INDEX_START Expression INDEX_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IndexNode</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;SOAKED_INDEX_START Expression SOAKED_INDEX_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IndexNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">&#39;soak&#39;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-28"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-28">#</a> </div> <p>In CoffeeScript, an object literal is simply a list of assignments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nb">Object</span><span class="o">:</span> <span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;{ AssignList }&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ObjectNode</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;{ IndentedAssignList }&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ObjectNode</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-29"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-29">#</a> </div> <p>Class definitions have optional bodies of prototype property assignments,
and optional references to the superclass.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Class: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;CLASS Value&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;CLASS Value EXTENDS Value&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span>
<span class="nx">o</span> <span class="s2">&quot;CLASS Value IndentedAssignList&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;CLASS Value EXTENDS Value IndentedAssignList&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$5</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-30"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-30">#</a> </div> <p>Assignment of properties within an object literal can be separated by
comma, as in JavaScript, or simply by newline.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">AssignList: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[]</span>
<span class="nx">o</span> <span class="s2">&quot;AssignObj&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;AssignList , AssignObj&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;AssignList TERMINATOR AssignObj&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;AssignList , TERMINATOR AssignObj&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-31"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-31">#</a> </div> <p>An <strong>AssignList</strong> within a block indentation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">IndentedAssignList: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;INDENT AssignList OUTDENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-32"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-32">#</a> </div> <p>The three flavors of function call: normal, object instantiation with <code>new</code>,
and calling <code>super()</code></p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Call: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Invocation&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;NEW Invocation&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">new_instance</span><span class="p">()</span>
<span class="nx">o</span> <span class="s2">&quot;Super&quot;</span>
<span class="p">]</span>
<span class="nv">Curry: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Value &lt;- Arguments&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CurryNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-33"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-33">#</a> </div> <p>Extending an object by setting its prototype chain to reference a parent
object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Extends: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Value EXTENDS Value&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ExtendsNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-34"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-34">#</a> </div> <p>Ordinary function invocation, or a chained series of calls.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Invocation: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Value Arguments&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;Invocation Arguments&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-35"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-35">#</a> </div> <p>The list of arguments to a function call.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Arguments: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;CALL_START ArgList CALL_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-36"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-36">#</a> </div> <p>Calling super.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Super: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;SUPER CALL_START ArgList CALL_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="s1">&#39;super&#39;</span><span class="p">,</span> <span class="nx">$3</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-37"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-37">#</a> </div> <p>A reference to the <em>this</em> current object, either naked or to a property.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">This: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;@&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">&#39;this&#39;</span>
<span class="nx">o</span> <span class="s2">&quot;@ Identifier&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">$2</span><span class="p">)]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-38"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-38">#</a> </div> <p>The CoffeeScript range literal.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Range: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;[ Expression . . Expression ]&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span>
<span class="nx">o</span> <span class="s2">&quot;[ Expression . . . Expression ]&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$6</span><span class="p">,</span> <span class="kc">true</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-39"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-39">#</a> </div> <p>The slice literal.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Slice: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;INDEX_START Expression . . Expression INDEX_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span>
<span class="nx">o</span> <span class="s2">&quot;INDEX_START Expression . . . Expression INDEX_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$6</span><span class="p">,</span> <span class="kc">true</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-40"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-40">#</a> </div> <p>The array literal.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nb">Array</span><span class="o">:</span> <span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;[ ArgList ]&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ArrayNode</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-41"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-41">#</a> </div> <p>The <strong>ArgList</strong> is both the list of objects passed into a function call,
as well as the contents of an array literal
(i.e. comma-separated expressions). Newlines work as well.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">ArgList: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[]</span>
<span class="nx">o</span> <span class="s2">&quot;Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;INDENT Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;ArgList , Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;ArgList TERMINATOR Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;ArgList , TERMINATOR Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;ArgList , INDENT Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;ArgList OUTDENT&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-42"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-42">#</a> </div> <p>Just simple, comma-separated, required arguments (no fancy syntax). We need
this to be separate from the <strong>ArgList</strong> for use in <strong>Switch</strong> blocks, where
having the newlines wouldn't make sense.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">SimpleArgs: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Expression&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;SimpleArgs , Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span>
<span class="k">if</span> <span class="nx">$1</span> <span class="k">instanceof</span> <span class="nb">Array</span> <span class="k">then</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span><span class="p">([</span><span class="nx">$3</span><span class="p">])</span> <span class="k">else</span> <span class="p">[</span><span class="nx">$1</span><span class="p">].</span><span class="nx">concat</span><span class="p">([</span><span class="nx">$3</span><span class="p">])</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-43"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-43">#</a> </div> <p>The variants of <em>try/catch/finally</em> exception handling blocks.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Try: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;TRY Block Catch&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;TRY Block FINALLY Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$4</span>
<span class="nx">o</span> <span class="s2">&quot;TRY Block Catch FINALLY Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">$5</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-44"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-44">#</a> </div> <p>A catch clause names its error and runs a block of code.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Catch: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;CATCH Identifier Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-45"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-45">#</a> </div> <p>Throw an exception object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Throw: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;THROW Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ThrowNode</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-46"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-46">#</a> </div> <p>Parenthetical expressions. Note that the <strong>Parenthetical</strong> is a <strong>Value</strong>,
not an <strong>Expression</strong>, so if you need to use an expression in a place
where only values are accepted, wrapping it in parentheses will always do
the trick.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Parenthetical: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;( Expression )&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ParentheticalNode</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-47"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-47">#</a> </div> <p>A language extension to CoffeeScript from the outside. We simply pass
it through unaltered.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Extension: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;EXTENSION&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">yytext</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-48"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-48">#</a> </div> <p>The condition portion of a while loop.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">WhileSource: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;WHILE Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;WHILE Expression WHEN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="p">{</span><span class="nx">filter</span> <span class="o">:</span> <span class="nx">$4</span><span class="p">}</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-49"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-49">#</a> </div> <p>The while loop can either be normal, with a block of expressions to execute,
or postfix, with a single expression. There is no do..while.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">While: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;WhileSource Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">add_body</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;Expression WhileSource&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">add_body</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-50"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-50">#</a> </div> <p>Array, object, and range comprehensions, at the most generic level.
Comprehensions can either be normal, with a block of expressions to execute,
or postfix, with a single expression.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">For: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Expression FOR ForVariables ForSource&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ForNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;FOR ForVariables ForSource Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ForNode</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$2</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-51"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-51">#</a> </div> <p>An array or range comprehension has variables for the current element and
(optional) reference to the current index. Or, <em>key, value</em>, in the case
of object comprehensions.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">ForVariables: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;Identifier&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
<span class="nx">o</span> <span class="s2">&quot;Identifier , Identifier&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-52"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-52">#</a> </div> <p>The source of a comprehension is an array or object with an optional filter
clause. If it's an array comprehension, you can also choose to step throug
in fixed-size increments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">ForSource: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;IN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">{</span><span class="nv">source: </span> <span class="nx">$2</span><span class="p">}</span>
<span class="nx">o</span> <span class="s2">&quot;OF Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">{</span><span class="nv">source: </span> <span class="nx">$2</span><span class="p">,</span> <span class="nv">object: </span><span class="kc">true</span><span class="p">}</span>
<span class="nx">o</span> <span class="s2">&quot;ForSource WHEN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nv">$1.filter: </span><span class="nx">$3</span><span class="p">;</span> <span class="nx">$1</span>
<span class="nx">o</span> <span class="s2">&quot;ForSource BY Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nv">$1.step: </span> <span class="nx">$3</span><span class="p">;</span> <span class="nx">$1</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-53"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-53">#</a> </div> <p>The CoffeeScript switch/when/else block replaces the JavaScript
switch/case/default by compiling into an if-else chain.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Switch: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;SWITCH Expression INDENT Whens OUTDENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$4</span><span class="p">.</span><span class="nx">rewrite_condition</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;SWITCH Expression INDENT Whens ELSE Block OUTDENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$4</span><span class="p">.</span><span class="nx">rewrite_condition</span><span class="p">(</span><span class="nx">$2</span><span class="p">).</span><span class="nx">add_else</span> <span class="nx">$6</span><span class="p">,</span> <span class="kc">true</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-54"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-54">#</a> </div> <p>The inner list of whens is left recursive. At code-generation time, the
IfNode will rewrite them into a proper chain.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Whens: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;When&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Whens When&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-55">#</a> </div> <p>An individual <strong>When</strong> clause, with action.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">When: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;LEADING_WHEN SimpleArgs Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">}</span>
<span class="nx">o</span> <span class="s2">&quot;LEADING_WHEN SimpleArgs Block TERMINATOR&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">}</span>
<span class="nx">o</span> <span class="s2">&quot;Comment TERMINATOR When&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nv">$3.comment: </span><span class="nx">$1</span><span class="p">;</span> <span class="nx">$3</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-56"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-56">#</a> </div> <p>The most basic form of <em>if</em> is a condition and an action. The following
if-related rules are broken up along these lines in order to avoid
ambiguity.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">IfStart: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;IF Expression Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;IfStart ElsIf&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">add_else</span> <span class="nx">$2</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-57"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-57">#</a> </div> <p>An <strong>IfStart</strong> can optionally be followed by an else block.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">IfBlock: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;IfStart&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;IfStart ELSE Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">add_else</span> <span class="nx">$3</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-58"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-58">#</a> </div> <p>An <em>else if</em> continuation of the <em>if</em> expression.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">ElsIf: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;ELSE IF Expression Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="p">(</span><span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="nx">$3</span><span class="p">,</span> <span class="nx">$4</span><span class="p">)).</span><span class="nx">force_statement</span><span class="p">()</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-59"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-59">#</a> </div> <p>The full complement of <em>if</em> expressions, including postfix one-liner
<em>if</em> and <em>unless</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">If: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;IfBlock&quot;</span>
<span class="nx">o</span> <span class="s2">&quot;Expression IF Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">}</span>
<span class="nx">o</span> <span class="s2">&quot;Expression UNLESS Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">invert: </span><span class="kc">true</span><span class="p">}</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-60"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-60">#</a> </div> <p>Arithmetic and logical operators, working on one or more operands.
Here they are grouped by order of precedence. The actual precedence rules
are defined at the bottom of the page. It would be shorter if we could
combine most of these rules into a single generic <em>Operand OpSymbol Operand</em>
-type rule, but in order to make the precedence binding possible, separate
rules are necessary.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">Operation: </span><span class="p">[</span>
<span class="nx">o</span> <span class="s2">&quot;! Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;!! Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;!!&#39;</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span><span class="p">(</span><span class="s2">&quot;- Expression&quot;</span><span class="p">,</span> <span class="p">(</span><span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;-&#39;</span><span class="p">,</span> <span class="nx">$2</span><span class="p">)),</span> <span class="p">{</span><span class="nv">prec: </span><span class="s1">&#39;UMINUS&#39;</span><span class="p">})</span>
<span class="nx">o</span><span class="p">(</span><span class="s2">&quot;+ Expression&quot;</span><span class="p">,</span> <span class="p">(</span><span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="nx">$2</span><span class="p">)),</span> <span class="p">{</span><span class="nv">prec: </span><span class="s1">&#39;UPLUS&#39;</span><span class="p">})</span>
<span class="nx">o</span> <span class="s2">&quot;~ Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;~&#39;</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;-- Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;--&#39;</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;++ Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;DELETE Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;delete&#39;</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;TYPEOF Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;typeof&#39;</span><span class="p">,</span> <span class="nx">$2</span>
<span class="nx">o</span> <span class="s2">&quot;Expression --&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;--&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span>
<span class="nx">o</span> <span class="s2">&quot;Expression ++&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span>
<span class="nx">o</span> <span class="s2">&quot;Expression * Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;*&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression / Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;/&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression % Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;%&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression + Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression - Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;-&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &lt;&lt; Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&lt;&lt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &gt;&gt; Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;&gt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &gt;&gt;&gt; Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;&gt;&gt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &amp; Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&amp;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression | Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;|&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression ^ Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;^&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &lt;= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&lt;=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &lt; Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&lt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &gt; Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &gt;= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression == Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;==&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression != Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;!=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &amp;&amp; Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&amp;&amp;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression || Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;||&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression ? Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;?&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression -= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;-=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression += Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;+=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression /= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;/=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression *= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;*=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression %= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;%=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression ||= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;||=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression &amp;&amp;= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&amp;&amp;=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression ?= Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;?=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression INSTANCEOF Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;instanceof&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="nx">o</span> <span class="s2">&quot;Expression IN Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;in&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
<span class="p">]</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-61"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-61">#</a> </div> <h2>Precedence</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-62"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-62">#</a> </div> <p>Operators at the top of this list have higher precedence than the ones lower
down. Following these rules is what makes <code>2 + 3 * 4</code> parse as:</p>
<pre><code>2 + (3 * 4)
</code></pre>
<p>And not:</p>
<pre><code>(2 + 3) * 4
</code></pre> </td> <td class="code"> <div class="highlight"><pre><span class="nv">operators: </span><span class="p">[</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;?&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;nonassoc&quot;</span><span class="p">,</span> <span class="s1">&#39;UMINUS&#39;</span><span class="p">,</span> <span class="s1">&#39;UPLUS&#39;</span><span class="p">,</span> <span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="s1">&#39;!!&#39;</span><span class="p">,</span> <span class="s1">&#39;~&#39;</span><span class="p">,</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="s1">&#39;--&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;*&#39;</span><span class="p">,</span> <span class="s1">&#39;/&#39;</span><span class="p">,</span> <span class="s1">&#39;%&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="s1">&#39;-&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;&lt;&lt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&gt;&gt;&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;&amp;&#39;</span><span class="p">,</span> <span class="s1">&#39;|&#39;</span><span class="p">,</span> <span class="s1">&#39;^&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;&lt;=&#39;</span><span class="p">,</span> <span class="s1">&#39;&lt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;=&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span> <span class="s1">&#39;DELETE&#39;</span><span class="p">,</span> <span class="s1">&#39;INSTANCEOF&#39;</span><span class="p">,</span> <span class="s1">&#39;TYPEOF&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;==&#39;</span><span class="p">,</span> <span class="s1">&#39;!=&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;&amp;&amp;&#39;</span><span class="p">,</span> <span class="s1">&#39;||&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span> <span class="s1">&#39;-=&#39;</span><span class="p">,</span> <span class="s1">&#39;+=&#39;</span><span class="p">,</span> <span class="s1">&#39;/=&#39;</span><span class="p">,</span> <span class="s1">&#39;*=&#39;</span><span class="p">,</span> <span class="s1">&#39;%=&#39;</span><span class="p">,</span> <span class="s1">&#39;||=&#39;</span><span class="p">,</span> <span class="s1">&#39;&amp;&amp;=&#39;</span><span class="p">,</span> <span class="s1">&#39;?=&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;.&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span> <span class="s1">&#39;INDENT&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span> <span class="s1">&#39;WHEN&#39;</span><span class="p">,</span> <span class="s1">&#39;LEADING_WHEN&#39;</span><span class="p">,</span> <span class="s1">&#39;IN&#39;</span><span class="p">,</span> <span class="s1">&#39;OF&#39;</span><span class="p">,</span> <span class="s1">&#39;BY&#39;</span><span class="p">,</span> <span class="s1">&#39;THROW&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span> <span class="s1">&#39;FOR&#39;</span><span class="p">,</span> <span class="s1">&#39;NEW&#39;</span><span class="p">,</span> <span class="s1">&#39;SUPER&#39;</span><span class="p">,</span> <span class="s1">&#39;CLASS&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span> <span class="s1">&#39;EXTENDS&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span> <span class="s1">&#39;ASSIGN&#39;</span><span class="p">,</span> <span class="s1">&#39;RETURN&#39;</span><span class="p">]</span>
<span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span> <span class="s1">&#39;-&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;=&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&lt;-&#39;</span><span class="p">,</span> <span class="s1">&#39;UNLESS&#39;</span><span class="p">,</span> <span class="s1">&#39;IF&#39;</span><span class="p">,</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s1">&#39;WHILE&#39;</span><span class="p">]</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-63"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-63">#</a> </div> <h2>Wrapping Up</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-64"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-64">#</a> </div> <p>Finally, now what we have our <strong>grammar</strong> and our <strong>operators</strong>, we can create
our <strong>Jison.Parser</strong>. We do this by processing all of our rules, recording all
terminals (every symbol which does not appear as the name of a rule above)
as "tokens".</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">tokens: </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">alternatives</span> <span class="k">of</span> <span class="nx">grammar</span>
<span class="nx">grammar</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="k">for</span> <span class="nx">alt</span> <span class="k">in</span> <span class="nx">alternatives</span>
<span class="k">for</span> <span class="nx">token</span> <span class="k">in</span> <span class="nx">alt</span><span class="p">[</span><span class="mi">0</span><span class="p">].</span><span class="nx">split</span> <span class="s1">&#39; &#39;</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="nx">token</span> <span class="nx">unless</span> <span class="nx">grammar</span><span class="p">[</span><span class="nx">token</span><span class="p">]</span>
<span class="nx">alt</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;return ${alt[1]}&quot;</span> <span class="k">if</span> <span class="nx">name</span> <span class="o">is</span> <span class="s1">&#39;Root&#39;</span>
<span class="nx">alt</span></pre></div> </td> </tr> <tr id="section-65"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-65">#</a> </div> <p>Initialize the <strong>Parser</strong> with our list of terminal <strong>tokens</strong>, our <strong>grammar</strong>
rules, and the name of the root. Reverse the operators because Jison orders
precedence from low to high, and we have it high to low
(as in <a href="http://dinosaur.compilertools.net/yacc/index.html">Yacc</a>).</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.parser: </span><span class="k">new</span> <span class="nx">Parser</span> <span class="p">{</span>
<span class="nv">tokens: </span> <span class="nx">tokens</span><span class="p">.</span><span class="nx">join</span> <span class="s1">&#39; &#39;</span>
<span class="nv">bnf: </span> <span class="nx">grammar</span>
<span class="nv">operators: </span> <span class="nx">operators</span><span class="p">.</span><span class="nx">reverse</span><span class="p">()</span>
<span class="nv">startSymbol: </span> <span class="s1">&#39;Root&#39;</span>
<span class="p">}</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,59 +0,0 @@
<!DOCTYPE html> <html> <head> <title>helpers.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> helpers.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>This file contains the common helper functions that we'd like to share among
the <strong>Lexer</strong>, <strong>Rewriter</strong>, and the <strong>Nodes</strong>. Merge objects, flatten
arrays, count characters, that sort of thing.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Set up exported variables for both <strong>Node.js</strong> and the browser.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span> <span class="nx">unless</span> <span class="nx">process</span><span class="o">?</span>
<span class="nv">helpers: exports.helpers: </span><span class="p">{}</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Does a list include a value?</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.include: include: </span><span class="p">(</span><span class="nx">list</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">list</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Peek at the beginning of a given string to see if it matches a sequence.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.starts: starts: </span><span class="p">(</span><span class="nx">string</span><span class="p">,</span> <span class="nx">literal</span><span class="p">,</span> <span class="nx">start</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">string</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="p">(</span><span class="nx">start</span> <span class="o">or</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="nx">literal</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="o">is</span> <span class="nx">literal</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Trim out all falsy values from an array.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.compact: compact: </span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">item</span> <span class="k">for</span> <span class="nx">item</span> <span class="k">in</span> <span class="nx">array</span> <span class="k">when</span> <span class="nx">item</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Count the number of occurences of a character in a string.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.count: count: </span><span class="p">(</span><span class="nx">string</span><span class="p">,</span> <span class="nx">letter</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">num: </span><span class="mi">0</span>
<span class="nv">pos: </span><span class="nx">string</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">letter</span><span class="p">)</span>
<span class="k">while</span> <span class="nx">pos</span> <span class="o">isnt</span> <span class="o">-</span><span class="mi">1</span>
<span class="nv">num: </span><span class="o">+</span> <span class="mi">1</span>
<span class="nv">pos: </span><span class="nx">string</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">letter</span><span class="p">,</span> <span class="nx">pos</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span>
<span class="nx">num</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>Merge objects, returning a fresh copy with attributes from both sides.
Used every time <code>BaseNode#compile</code> is called, to allow properties in the
options hash to propagate down the tree without polluting other branches.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.merge: merge: </span><span class="p">(</span><span class="nx">options</span><span class="p">,</span> <span class="nx">overrides</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">fresh: </span><span class="p">{}</span>
<span class="p">(</span><span class="nx">fresh</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span><span class="o">:</span> <span class="nx">val</span><span class="p">)</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="nx">options</span>
<span class="p">(</span><span class="nx">fresh</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span><span class="o">:</span> <span class="nx">val</span><span class="p">)</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="nx">overrides</span> <span class="k">if</span> <span class="nx">overrides</span>
<span class="nx">fresh</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Extend a source object with the properties of another object (shallow copy).
We use this to simulate Node's deprecated <code>process.mixin</code></p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.extend: extend: </span><span class="p">(</span><span class="nx">object</span><span class="p">,</span> <span class="nx">properties</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="p">(</span><span class="nx">object</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span><span class="o">:</span> <span class="nx">val</span><span class="p">)</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="nx">properties</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Return a completely flattened version of an array. Handy for getting a
list of <code>children</code> from the nodes.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.flatten: flatten: </span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">memo: </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">item</span> <span class="k">in</span> <span class="nx">array</span>
<span class="k">if</span> <span class="nx">item</span> <span class="k">instanceof</span> <span class="nb">Array</span> <span class="k">then</span> <span class="nv">memo: </span><span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="k">else</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span>
<span class="nx">memo</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>Delete a key from an object, returning the value. Useful when a node is
looking for a particular method in an options hash.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.del: del: </span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">val: </span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span>
<span class="k">delete</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span>
<span class="nx">val</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Matches a balanced group such as a single or double-quoted string. Pass in
a series of delimiters, all of which must be nested correctly within the
contents of the string. This method allows us to have strings within
interpolations within strings, ad infinitum.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">helpers.balanced_string: balanced_string: </span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">delimited</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">options: </span><span class="o">or</span> <span class="p">{}</span>
<span class="nv">slash: </span><span class="nx">delimited</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;/&#39;</span>
<span class="nv">levels: </span><span class="p">[]</span>
<span class="nv">i: </span><span class="mi">0</span>
<span class="k">while</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span>
<span class="k">if</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span> <span class="o">and</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="s1">&#39;\\&#39;</span><span class="p">,</span> <span class="nx">i</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="k">else</span>
<span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">delimited</span>
<span class="p">[</span><span class="nx">open</span><span class="p">,</span> <span class="nx">close</span><span class="p">]</span><span class="o">:</span> <span class="nx">pair</span>
<span class="k">if</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span> <span class="o">and</span> <span class="nx">starts</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">close</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">and</span> <span class="nx">levels</span><span class="p">[</span><span class="nx">levels</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">is</span> <span class="nx">pair</span>
<span class="nx">levels</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="nv">i: </span><span class="o">+</span> <span class="nx">close</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span>
<span class="k">break</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="nx">open</span><span class="p">,</span> <span class="nx">i</span>
<span class="nx">levels</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">pair</span><span class="p">)</span>
<span class="nv">i: </span><span class="o">+</span> <span class="nx">open</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">break</span>
<span class="k">break</span> <span class="k">if</span> <span class="o">not</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span> <span class="o">or</span> <span class="nx">slash</span> <span class="o">and</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="s1">&#39;\n&#39;</span><span class="p">,</span> <span class="nx">i</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="k">if</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span>
<span class="k">return</span> <span class="kc">false</span> <span class="k">if</span> <span class="nx">slash</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;SyntaxError: Unterminated ${levels.pop()[0]} starting on line ${@line + 1}&quot;</span>
<span class="k">if</span> <span class="o">not</span> <span class="nx">i</span> <span class="k">then</span> <span class="kc">false</span> <span class="k">else</span> <span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,375 +0,0 @@
<!DOCTYPE html> <html> <head> <title>lexer.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> lexer.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>The CoffeeScript Lexer. Uses a series of token-matching regexes to attempt
matches against the beginning of the source code. When a match is found,
a token is produced, we consume the match, and start again. Tokens are in the
form:</p>
<pre><code>[tag, value, line_number]
</code></pre>
<p>Which is a format that can be fed directly into <a href="http://github.com/zaach/jison">Jison</a>.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Set up the Lexer for both Node.js and the browser, depending on where we are.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">if</span> <span class="nx">process</span><span class="o">?</span>
<span class="nv">Rewriter: </span><span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./rewriter&#39;</span><span class="p">).</span><span class="nx">Rewriter</span>
<span class="nv">helpers: </span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./helpers&#39;</span><span class="p">).</span><span class="nx">helpers</span>
<span class="k">else</span>
<span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span>
<span class="nv">Rewriter: </span> <span class="k">this</span><span class="p">.</span><span class="nx">Rewriter</span>
<span class="nv">helpers: </span> <span class="k">this</span><span class="p">.</span><span class="nx">helpers</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Import the helpers we need.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">include: </span> <span class="nx">helpers</span><span class="p">.</span><span class="nx">include</span>
<span class="nv">count: </span> <span class="nx">helpers</span><span class="p">.</span><span class="nx">count</span>
<span class="nv">starts: </span> <span class="nx">helpers</span><span class="p">.</span><span class="nx">starts</span>
<span class="nv">compact: </span> <span class="nx">helpers</span><span class="p">.</span><span class="nx">compact</span>
<span class="nv">balanced_string: </span> <span class="nx">helpers</span><span class="p">.</span><span class="nx">balanced_string</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <h2>The Lexer Class</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>The Lexer class reads a stream of CoffeeScript and divvys it up into tagged
tokens. Some potential ambiguity in the grammar has been avoided by
pushing some extra smarts into the Lexer.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.Lexer: </span><span class="nx">class</span> <span class="nx">Lexer</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p><strong>tokenize</strong> is the Lexer's main method. Scan by attempting to match tokens
one at a time, using a regular expression anchored at the start of the
remaining code, or a custom recursive token-matching method
(for interpolations). When the next token has been recorded, we move forward
within the code past the token, and begin again.</p>
<p>Each tokenizing method is responsible for incrementing <code>@i</code> by the number of
characters it has consumed. <code>@i</code> can be thought of as our finger on the page
of source.</p>
<p>Before returning the token stream, run it through the <a href="rewriter.html">Rewriter</a>
unless explicitly asked not to.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">tokenize: </span><span class="p">(</span><span class="nx">code</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">code</span> <span class="o">:</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/(\r|\s+$)/g</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="nx">o</span> <span class="o">:</span> <span class="nx">options</span> <span class="o">or</span> <span class="p">{}</span>
<span class="err">@</span><span class="nx">code</span> <span class="o">:</span> <span class="nx">code</span> <span class="c1"># The remainder of the source code.</span>
<span class="err">@</span><span class="nx">i</span> <span class="o">:</span> <span class="mi">0</span> <span class="c1"># Current character position we&#39;re parsing.</span>
<span class="err">@</span><span class="nx">line</span> <span class="o">:</span> <span class="nx">o</span><span class="p">.</span><span class="nx">line</span> <span class="o">or</span> <span class="mi">0</span> <span class="c1"># The current line.</span>
<span class="err">@</span><span class="nx">indent</span> <span class="o">:</span> <span class="mi">0</span> <span class="c1"># The current indentation level.</span>
<span class="err">@</span><span class="nx">indents</span> <span class="o">:</span> <span class="p">[]</span> <span class="c1"># The stack of all current indentation levels.</span>
<span class="err">@</span><span class="nx">tokens</span> <span class="o">:</span> <span class="p">[]</span> <span class="c1"># Stream of parsed tokens in the form [&#39;TYPE&#39;, value, line]</span>
<span class="k">while</span> <span class="err">@</span><span class="nx">i</span> <span class="o">&lt;</span> <span class="err">@</span><span class="nx">code</span><span class="p">.</span><span class="nx">length</span>
<span class="err">@</span><span class="nv">chunk: </span><span class="err">@</span><span class="nx">code</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="err">@</span><span class="nx">i</span><span class="p">)</span>
<span class="err">@</span><span class="nx">extract_next_token</span><span class="p">()</span>
<span class="err">@</span><span class="nx">close_indentation</span><span class="p">()</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">tokens</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">rewrite</span> <span class="o">is</span> <span class="kc">off</span>
<span class="p">(</span><span class="k">new</span> <span class="nx">Rewriter</span><span class="p">()).</span><span class="nx">rewrite</span> <span class="err">@</span><span class="nx">tokens</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>At every position, run through this list of attempted matches,
short-circuiting if any of them succeed. Their order determines precedence:
<code>@literal_token</code> is the fallback catch-all.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">extract_next_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">extension_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">identifier_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">number_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">heredoc_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">regex_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">comment_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">line_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">whitespace_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">js_token</span><span class="p">()</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">string_token</span><span class="p">()</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">literal_token</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <h2>Tokenizers</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Language extensions get the highest priority, first chance to tag tokens
as something else.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">extension_token: </span><span class="o">-&gt;</span>
<span class="k">for</span> <span class="nx">extension</span> <span class="k">in</span> <span class="nx">Lexer</span><span class="p">.</span><span class="nx">extensions</span>
<span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="nx">extension</span><span class="p">.</span><span class="nx">call</span> <span class="k">this</span>
<span class="kc">false</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>Matches identifying literals: variables, keywords, method names, etc.
Check to ensure that JavaScript reserved words aren't being used as
identifiers. Because CoffeeScript reserves a handful of keywords that are
allowed in JavaScript, we're careful not to tag them as keywords when
referenced as property names here, so you can still do <code>jQuery.is()</code> even
though <code>is</code> means <code>===</code> otherwise.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">identifier_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">id: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">IDENTIFIER</span><span class="p">,</span> <span class="mi">1</span>
<span class="err">@</span><span class="nx">name_access_type</span><span class="p">()</span>
<span class="nv">accessed: </span><span class="nx">include</span> <span class="nx">ACCESSORS</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="nv">tag: </span><span class="s1">&#39;IDENTIFIER&#39;</span>
<span class="nv">tag: </span><span class="nx">id</span><span class="p">.</span><span class="nx">toUpperCase</span><span class="p">()</span> <span class="k">if</span> <span class="o">not</span> <span class="nx">accessed</span> <span class="o">and</span> <span class="nx">include</span><span class="p">(</span><span class="nx">KEYWORDS</span><span class="p">,</span> <span class="nx">id</span><span class="p">)</span>
<span class="err">@</span><span class="nx">identifier_error</span> <span class="nx">id</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">RESERVED</span><span class="p">,</span> <span class="nx">id</span>
<span class="nv">tag: </span><span class="s1">&#39;LEADING_WHEN&#39;</span> <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;WHEN&#39;</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">LINE_BREAK</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">id</span><span class="p">.</span><span class="nx">length</span>
<span class="k">if</span> <span class="o">not</span> <span class="nx">accessed</span>
<span class="nv">tag: id: </span><span class="nx">CONVERSIONS</span><span class="p">[</span><span class="nx">id</span><span class="p">]</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">COFFEE_ALIASES</span><span class="p">,</span> <span class="nx">id</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">tag_half_assignment</span><span class="p">(</span><span class="nx">tag</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">prev</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">prev</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;ASSIGN&#39;</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">HALF_ASSIGNMENTS</span><span class="p">,</span> <span class="nx">tag</span>
<span class="err">@</span><span class="nx">token</span><span class="p">(</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">id</span><span class="p">)</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Matches numbers, including decimals, hex, and exponential notation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">number_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">number: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">NUMBER</span><span class="p">,</span> <span class="mi">1</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;NUMBER&#39;</span><span class="p">,</span> <span class="nx">number</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">number</span><span class="p">.</span><span class="nx">length</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-12">#</a> </div> <p>Matches strings, including multi-line strings. Ensures that quotation marks
are balanced within the string's contents, and within nested interpolations.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">string_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nx">starts</span><span class="p">(</span><span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="s1">&#39;&quot;&#39;</span><span class="p">)</span> <span class="o">or</span> <span class="nx">starts</span><span class="p">(</span><span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">string:</span>
<span class="err">@</span><span class="nx">balanced_token</span><span class="p">([</span><span class="s1">&#39;&quot;&#39;</span><span class="p">,</span> <span class="s1">&#39;&quot;&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;${&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">])</span> <span class="o">or</span>
<span class="err">@</span><span class="nx">balanced_token</span> <span class="p">[</span><span class="s2">&quot;&#39;&quot;</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">]</span>
<span class="err">@</span><span class="nx">interpolate_string</span> <span class="nx">string</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">STRING_NEWLINES</span><span class="p">,</span> <span class="s2">&quot; \\\n&quot;</span><span class="p">)</span>
<span class="err">@</span><span class="nv">line: </span><span class="o">+</span> <span class="nx">count</span> <span class="nx">string</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">string</span><span class="p">.</span><span class="nx">length</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-13">#</a> </div> <p>Matches heredocs, adjusting indentation to the correct level, as heredocs
preserve whitespace, but ignore indentation to the left.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">heredoc_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">match: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">HEREDOC</span><span class="p">)</span>
<span class="nv">quote: </span><span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">substr</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="nv">doc: </span><span class="err">@</span><span class="nx">sanitize_heredoc</span> <span class="nx">match</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">or</span> <span class="nx">match</span><span class="p">[</span><span class="mi">4</span><span class="p">],</span> <span class="nx">quote</span>
<span class="err">@</span><span class="nx">interpolate_string</span> <span class="s2">&quot;$quote$doc$quote&quot;</span>
<span class="err">@</span><span class="nv">line: </span><span class="o">+</span> <span class="nx">count</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="s2">&quot;\n&quot;</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">length</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-14">#</a> </div> <p>Matches JavaScript interpolated directly into the source via backticks.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">js_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nx">starts</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="s1">&#39;`&#39;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">script: </span><span class="err">@</span><span class="nx">balanced_token</span> <span class="p">[</span><span class="s1">&#39;`&#39;</span><span class="p">,</span> <span class="s1">&#39;`&#39;</span><span class="p">]</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;JS&#39;</span><span class="p">,</span> <span class="nx">script</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">JS_CLEANER</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">script</span><span class="p">.</span><span class="nx">length</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-15">#</a> </div> <p>Matches regular expression literals. Lexing regular expressions is difficult
to distinguish from division, so we borrow some basic heuristics from
JavaScript and Ruby, borrow slash balancing from <code>@balanced_token</code>, and
borrow interpolation from <code>@interpolate_string</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">regex_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span> <span class="nx">REGEX_START</span>
<span class="k">return</span> <span class="kc">false</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">NOT_REGEX</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">regex: </span><span class="err">@</span><span class="nx">balanced_token</span> <span class="p">[</span><span class="s1">&#39;/&#39;</span><span class="p">,</span> <span class="s1">&#39;/&#39;</span><span class="p">]</span>
<span class="nv">regex: </span><span class="o">+</span> <span class="p">(</span><span class="nv">flags: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="nx">regex</span><span class="p">.</span><span class="nx">length</span><span class="p">).</span><span class="nx">match</span><span class="p">(</span><span class="nx">REGEX_FLAGS</span><span class="p">))</span>
<span class="k">if</span> <span class="nx">regex</span><span class="p">.</span><span class="nx">match</span> <span class="nx">REGEX_INTERPOLATION</span>
<span class="nv">str: </span><span class="nx">regex</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">1</span><span class="p">).</span><span class="nx">split</span><span class="p">(</span><span class="s1">&#39;/&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
<span class="nv">str: </span><span class="nx">str</span><span class="p">.</span><span class="nx">replace</span> <span class="nx">REGEX_ESCAPE</span><span class="p">,</span> <span class="p">(</span><span class="nx">escaped</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="s1">&#39;\\&#39;</span> <span class="o">+</span> <span class="nx">escaped</span>
<span class="err">@</span><span class="nv">tokens: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[[</span><span class="s1">&#39;(&#39;</span><span class="p">,</span> <span class="s1">&#39;(&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;NEW&#39;</span><span class="p">,</span> <span class="s1">&#39;new&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="s1">&#39;RegExp&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;CALL_START&#39;</span><span class="p">,</span> <span class="s1">&#39;(&#39;</span><span class="p">]]</span>
<span class="err">@</span><span class="nx">interpolate_string</span> <span class="s2">&quot;\&quot;$str\&quot;&quot;</span><span class="p">,</span> <span class="kc">yes</span>
<span class="err">@</span><span class="nv">tokens: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[[</span><span class="s1">&#39;,&#39;</span><span class="p">,</span> <span class="s1">&#39;,&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;\&quot;$flags\&quot;&quot;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">]]</span>
<span class="k">else</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;REGEX&#39;</span><span class="p">,</span> <span class="nx">regex</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">regex</span><span class="p">.</span><span class="nx">length</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-16">#</a> </div> <p>Matches a token in which which the passed delimiter pairs must be correctly
balanced (ie. strings, JS literals).</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">balanced_token: </span><span class="p">(</span><span class="nx">delimited</span><span class="p">...)</span> <span class="o">-&gt;</span>
<span class="nx">balanced_string</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="nx">delimited</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-17">#</a> </div> <p>Matches and conumes comments. We pass through comments into JavaScript,
so they're treated as real tokens, like any other part of the language.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">comment_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">comment: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">COMMENT</span><span class="p">,</span> <span class="mi">1</span>
<span class="err">@</span><span class="nv">line: </span><span class="o">+</span> <span class="p">(</span><span class="nx">comment</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">)</span> <span class="o">or</span> <span class="p">[]).</span><span class="nx">length</span>
<span class="nv">lines: </span><span class="nx">compact</span> <span class="nx">comment</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">COMMENT_CLEANER</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">).</span><span class="nx">split</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">)</span>
<span class="nv">i: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">unfinished</span><span class="p">()</span>
<span class="nv">i: </span><span class="o">-</span> <span class="mi">1</span> <span class="k">while</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">include</span> <span class="nx">LINE_BREAK</span><span class="p">,</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;COMMENT&#39;</span><span class="p">,</span> <span class="nx">lines</span><span class="p">,</span> <span class="err">@</span><span class="nx">line</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s1">&#39;\n&#39;</span><span class="p">,</span> <span class="err">@</span><span class="nx">line</span><span class="p">])</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">comment</span><span class="p">.</span><span class="nx">length</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-18">#</a> </div> <p>Matches newlines, indents, and outdents, and determines which is which.
If we can detect that the current line is continued onto the the next line,
then the newline is suppressed:</p>
<pre><code>elements
.each( ... )
.map( ... )
</code></pre>
<p>Keeps track of the level of indentation, because a single outdent token
can close multiple indents, so we need to know how far in we happen to be.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">line_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">indent: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">MULTI_DENT</span><span class="p">,</span> <span class="mi">1</span>
<span class="err">@</span><span class="nv">line: </span><span class="o">+</span> <span class="nx">indent</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">).</span><span class="nx">length</span>
<span class="err">@</span><span class="nx">i</span> <span class="o">:</span> <span class="o">+</span> <span class="nx">indent</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">prev: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
<span class="nv">size: </span><span class="nx">indent</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LAST_DENTS</span><span class="p">).</span><span class="nx">reverse</span><span class="p">()[</span><span class="mi">0</span><span class="p">].</span><span class="nx">match</span><span class="p">(</span><span class="nx">LAST_DENT</span><span class="p">)[</span><span class="mi">1</span><span class="p">].</span><span class="nx">length</span>
<span class="nv">next_character: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">MULTI_DENT</span><span class="p">)[</span><span class="mi">4</span><span class="p">]</span>
<span class="nv">no_newlines: </span><span class="nx">next_character</span> <span class="o">is</span> <span class="s1">&#39;.&#39;</span> <span class="o">or</span> <span class="err">@</span><span class="nx">unfinished</span><span class="p">()</span>
<span class="k">if</span> <span class="nx">size</span> <span class="o">is</span> <span class="err">@</span><span class="nx">indent</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">suppress_newlines</span><span class="p">()</span> <span class="k">if</span> <span class="nx">no_newlines</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">newline_token</span><span class="p">(</span><span class="nx">indent</span><span class="p">)</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">size</span> <span class="o">&gt;</span> <span class="err">@</span><span class="nx">indent</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">suppress_newlines</span><span class="p">()</span> <span class="k">if</span> <span class="nx">no_newlines</span>
<span class="nv">diff: </span><span class="nx">size</span> <span class="o">-</span> <span class="err">@</span><span class="nx">indent</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="nx">diff</span>
<span class="err">@</span><span class="nx">indents</span><span class="p">.</span><span class="nx">push</span> <span class="nx">diff</span>
<span class="k">else</span>
<span class="err">@</span><span class="nx">outdent_token</span> <span class="err">@</span><span class="nx">indent</span> <span class="o">-</span> <span class="nx">size</span><span class="p">,</span> <span class="nx">no_newlines</span>
<span class="err">@</span><span class="nv">indent: </span><span class="nx">size</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-19">#</a> </div> <p>Record an outdent token or multiple tokens, if we happen to be moving back
inwards past several recorded indents.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">outdent_token: </span><span class="p">(</span><span class="nx">move_out</span><span class="p">,</span> <span class="nx">no_newlines</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">while</span> <span class="nx">move_out</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="o">and</span> <span class="err">@</span><span class="nx">indents</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">last_indent: </span><span class="err">@</span><span class="nx">indents</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="nx">last_indent</span>
<span class="nv">move_out: </span><span class="o">-</span> <span class="nx">last_indent</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span> <span class="o">or</span> <span class="nx">no_newlines</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-20">#</a> </div> <p>Matches and consumes non-meaningful whitespace. Tag the previous token
as being "spaced", because there are some cases where it makes a difference.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">whitespace_token: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">space: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">WHITESPACE</span><span class="p">,</span> <span class="mi">1</span>
<span class="nv">prev: </span><span class="err">@</span><span class="nx">prev</span><span class="p">()</span>
<span class="nv">prev.spaced: </span><span class="kc">true</span> <span class="k">if</span> <span class="nx">prev</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">space</span><span class="p">.</span><span class="nx">length</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-21">#</a> </div> <p>Generate a newline token. Consecutive newlines get merged together.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">newline_token: </span><span class="p">(</span><span class="nx">newlines</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-22">#</a> </div> <p>Use a <code>\</code> at a line-ending to suppress the newline.
The slash is removed here once its job is done.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">suppress_newlines: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span> <span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">is</span> <span class="s2">&quot;\\&quot;</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-23">#</a> </div> <p>We treat all other single characters as a token. Eg.: <code>( ) , . !</code>
Multi-character operators are also literal tokens, so that Jison can assign
the proper order of operations. There are some symbols that we tag specially
here. <code>;</code> and newlines are both treated as a <code>TERMINATOR</code>, we distinguish
parentheses that indicate a method call from regular parentheses, and so on.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">literal_token: </span><span class="o">-&gt;</span>
<span class="nv">match: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">OPERATOR</span><span class="p">)</span>
<span class="nv">value: </span><span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="nv">space: </span><span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
<span class="err">@</span><span class="nx">tag_parameters</span><span class="p">()</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">and</span> <span class="nx">value</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">CODE</span><span class="p">)</span>
<span class="nv">value: </span><span class="o">or</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="nv">prev_spaced: </span><span class="err">@</span><span class="nx">prev</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">prev</span><span class="p">().</span><span class="nx">spaced</span>
<span class="nv">tag: </span><span class="nx">value</span>
<span class="k">if</span> <span class="nx">value</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">ASSIGNMENT</span><span class="p">)</span>
<span class="nv">tag: </span><span class="s1">&#39;ASSIGN&#39;</span>
<span class="err">@</span><span class="nx">assignment_error</span><span class="p">()</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">JS_FORBIDDEN</span><span class="p">,</span> <span class="err">@</span><span class="nx">value</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;;&#39;</span>
<span class="nv">tag: </span><span class="s1">&#39;TERMINATOR&#39;</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;[&#39;</span> <span class="o">and</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;?&#39;</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">prev_spaced</span>
<span class="nv">tag: </span><span class="s1">&#39;SOAKED_INDEX_START&#39;</span>
<span class="err">@</span><span class="nv">soaked_index: </span><span class="kc">true</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;]&#39;</span> <span class="o">and</span> <span class="err">@</span><span class="nx">soaked_index</span>
<span class="nv">tag: </span><span class="s1">&#39;SOAKED_INDEX_END&#39;</span>
<span class="err">@</span><span class="nv">soaked_index: </span><span class="kc">false</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">include</span><span class="p">(</span><span class="nx">CALLABLE</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">())</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">prev_spaced</span>
<span class="nv">tag: </span><span class="s1">&#39;CALL_START&#39;</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;(&#39;</span>
<span class="nv">tag: </span><span class="s1">&#39;INDEX_START&#39;</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;[&#39;</span>
<span class="err">@</span><span class="nv">i: </span><span class="o">+</span> <span class="nx">value</span><span class="p">.</span><span class="nx">length</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">tag_half_assignment</span><span class="p">(</span><span class="nx">tag</span><span class="p">)</span> <span class="k">if</span> <span class="nx">space</span> <span class="o">and</span> <span class="nx">prev_spaced</span> <span class="o">and</span> <span class="err">@</span><span class="nx">prev</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;ASSIGN&#39;</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">HALF_ASSIGNMENTS</span><span class="p">,</span> <span class="nx">tag</span>
<span class="err">@</span><span class="nx">token</span> <span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-24">#</a> </div> <h2>Token Manipulators</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-25">#</a> </div> <p>As we consume a new <code>IDENTIFIER</code>, look at the previous token to determine
if it's a special kind of accessor.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">name_access_type: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;PROTOTYPE_ACCESS&#39;</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;::&#39;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;.&#39;</span> <span class="o">and</span> <span class="o">not</span> <span class="p">(</span><span class="err">@</span><span class="nx">value</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;.&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;?&#39;</span>
<span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;SOAK_ACCESS&#39;</span><span class="p">)</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="o">-</span><span class="mi">2</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">else</span>
<span class="err">@</span><span class="nx">tag</span> <span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;PROPERTY_ACCESS&#39;</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-26">#</a> </div> <p>Sanitize a heredoc by escaping internal double quotes and erasing all
external indentation on the left-hand side.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">sanitize_heredoc: </span><span class="p">(</span><span class="nx">doc</span><span class="p">,</span> <span class="nx">quote</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">indent: </span><span class="p">(</span><span class="nx">doc</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">HEREDOC_INDENT</span><span class="p">)</span> <span class="o">or</span> <span class="p">[</span><span class="s1">&#39;&#39;</span><span class="p">]).</span><span class="nx">sort</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span>
<span class="nx">doc</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="k">new</span> <span class="nb">RegExp</span><span class="p">(</span><span class="s2">&quot;^&quot;</span> <span class="o">+</span><span class="nx">indent</span><span class="p">,</span> <span class="s1">&#39;gm&#39;</span><span class="p">),</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">,</span> <span class="s2">&quot;\\n&quot;</span><span class="p">)</span>
<span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="k">new</span> <span class="nb">RegExp</span><span class="p">(</span><span class="nx">quote</span><span class="p">,</span> <span class="s1">&#39;g&#39;</span><span class="p">),</span> <span class="s1">&#39;\\&quot;&#39;</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-27"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-27">#</a> </div> <p>Tag a half assignment.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">tag_half_assignment: </span><span class="p">(</span><span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">last: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s2">&quot;$tag=&quot;</span><span class="p">,</span> <span class="s2">&quot;$tag=&quot;</span><span class="p">,</span> <span class="nx">last</span><span class="p">[</span><span class="mi">2</span><span class="p">]]</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-28"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-28">#</a> </div> <p>A source of ambiguity in our grammar used to be parameter lists in function
definitions versus argument lists in function calls. Walk backwards, tagging
parameters specially in order to make things easier for the parser.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">tag_parameters: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">isnt</span> <span class="s1">&#39;)&#39;</span>
<span class="nv">i: </span><span class="mi">0</span>
<span class="k">while</span> <span class="kc">true</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="nv">tok: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="nx">i</span><span class="p">)</span>
<span class="k">return</span> <span class="k">if</span> <span class="o">not</span> <span class="nx">tok</span>
<span class="k">switch</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">when</span> <span class="s1">&#39;IDENTIFIER&#39;</span> <span class="k">then</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;PARAM&#39;</span>
<span class="k">when</span> <span class="s1">&#39;)&#39;</span> <span class="k">then</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;PARAM_END&#39;</span>
<span class="k">when</span> <span class="s1">&#39;(&#39;</span> <span class="k">then</span> <span class="k">return</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;PARAM_START&#39;</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-29"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-29">#</a> </div> <p>Close up all remaining open blocks at the end of the file.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">close_indentation: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">outdent_token</span><span class="p">(</span><span class="err">@</span><span class="nx">indent</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-30"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-30">#</a> </div> <p>The error for when you try to use a forbidden word in JavaScript as
an identifier.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">identifier_error: </span><span class="p">(</span><span class="nx">word</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;SyntaxError: Reserved word \&quot;$word\&quot; on line ${@line + 1}&quot;</span></pre></div> </td> </tr> <tr id="section-31"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-31">#</a> </div> <p>The error for when you try to assign to a reserved word in JavaScript,
like "function" or "default".</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">assignment_error: </span><span class="o">-&gt;</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;SyntaxError: Reserved word \&quot;${@value()}\&quot; on line ${@line + 1} can&#39;t be assigned&quot;</span></pre></div> </td> </tr> <tr id="section-32"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-32">#</a> </div> <p>Expand variables and expressions inside double-quoted strings using
<a href="http://wiki.ecmascript.org/doku.php?id=strawman:string_interpolation">ECMA Harmony's interpolation syntax</a>
for substitution of bare variables as well as arbitrary expressions.</p>
<pre><code>"Hello $name."
"Hello ${name.capitalize()}."
</code></pre>
<p>If it encounters an interpolation, this method will recursively create a
new Lexer, tokenize the interpolated contents, and merge them into the
token stream.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">interpolate_string: </span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">escape_quotes</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">if</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;</span> <span class="mi">3</span> <span class="o">or</span> <span class="o">not</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="s1">&#39;&quot;&#39;</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="nx">str</span>
<span class="k">else</span>
<span class="nv">lexer: </span> <span class="k">new</span> <span class="nx">Lexer</span><span class="p">()</span>
<span class="nv">tokens: </span> <span class="p">[]</span>
<span class="nv">quote: </span> <span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="p">[</span><span class="nx">i</span><span class="p">,</span> <span class="nx">pi</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">]</span>
<span class="k">while</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">if</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="s1">&#39;\\&#39;</span><span class="p">,</span> <span class="nx">i</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="k">else</span> <span class="k">if</span> <span class="nv">match: </span><span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="nx">i</span><span class="p">).</span><span class="nx">match</span> <span class="nx">INTERPOLATION</span>
<span class="p">[</span><span class="nx">group</span><span class="p">,</span> <span class="nx">interp</span><span class="p">]</span><span class="o">:</span> <span class="nx">match</span>
<span class="nv">interp: </span><span class="s2">&quot;this.${ interp.substring(1) }&quot;</span> <span class="k">if</span> <span class="nx">starts</span> <span class="nx">interp</span><span class="p">,</span> <span class="s1">&#39;@&#39;</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote${ str.substring(pi, i) }$quote&quot;</span><span class="p">]</span> <span class="k">if</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">i</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="nx">interp</span><span class="p">]</span>
<span class="nv">i: </span><span class="o">+</span> <span class="nx">group</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nv">pi: </span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nv">expr: </span><span class="nx">balanced_string</span> <span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="nx">i</span><span class="p">),</span> <span class="p">[[</span><span class="s1">&#39;${&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">]])</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote${ str.substring(pi, i) }$quote&quot;</span><span class="p">]</span> <span class="k">if</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">i</span>
<span class="nv">inner: </span><span class="nx">expr</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">if</span> <span class="nx">inner</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">nested: </span><span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="s2">&quot;($inner)&quot;</span><span class="p">,</span> <span class="p">{</span><span class="nv">rewrite: </span><span class="kc">no</span><span class="p">,</span> <span class="nv">line: </span><span class="err">@</span><span class="nx">line</span><span class="p">}</span>
<span class="nx">nested</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;TOKENS&#39;</span><span class="p">,</span> <span class="nx">nested</span><span class="p">]</span>
<span class="k">else</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote$quote&quot;</span><span class="p">]</span>
<span class="nv">i: </span><span class="o">+</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nv">pi: </span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote${ str.substring(pi, i) }$quote&quot;</span><span class="p">]</span> <span class="k">if</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">i</span> <span class="o">and</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nx">tokens</span><span class="p">.</span><span class="nx">unshift</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s1">&#39;&quot;&quot;&#39;</span><span class="p">]</span> <span class="nx">unless</span> <span class="nx">tokens</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;STRING&#39;</span>
<span class="k">for</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="nx">tokens</span>
<span class="p">[</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span><span class="p">]</span><span class="o">:</span> <span class="nx">token</span>
<span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;TOKENS&#39;</span>
<span class="err">@</span><span class="nv">tokens: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">value</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;STRING&#39;</span> <span class="o">and</span> <span class="nx">escape_quotes</span>
<span class="nv">escaped: </span><span class="nx">value</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="nx">value</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;\\&quot;&#39;</span><span class="p">)</span>
<span class="err">@</span><span class="nx">token</span> <span class="nx">tag</span><span class="p">,</span> <span class="s2">&quot;\&quot;$escaped\&quot;&quot;</span>
<span class="k">else</span>
<span class="err">@</span><span class="nx">token</span> <span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span>
<span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="s1">&#39;+&#39;</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">tokens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nx">tokens</span></pre></div> </td> </tr> <tr id="section-33"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-33">#</a> </div> <h2>Helpers</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-34"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-34">#</a> </div> <p>Add a token to the results, taking note of the line number.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">token: </span><span class="p">(</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span><span class="p">([</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="err">@</span><span class="nx">line</span><span class="p">])</span></pre></div> </td> </tr> <tr id="section-35"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-35">#</a> </div> <p>Peek at a tag in the current token stream.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">tag: </span><span class="p">(</span><span class="nx">index</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="nx">unless</span> <span class="nv">tok: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span>
<span class="k">return</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="nx">tag</span> <span class="k">if</span> <span class="nx">tag</span><span class="o">?</span>
<span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-36"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-36">#</a> </div> <p>Peek at a value in the current token stream.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">value: </span><span class="p">(</span><span class="nx">index</span><span class="p">,</span> <span class="nx">val</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="nx">unless</span> <span class="nv">tok: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span>
<span class="k">return</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="nx">val</span> <span class="k">if</span> <span class="nx">val</span><span class="o">?</span>
<span class="nx">tok</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-37"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-37">#</a> </div> <p>Peek at a previous token, entire.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">prev: </span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="p">(</span><span class="nx">index</span> <span class="o">or</span> <span class="mi">1</span><span class="p">)]</span></pre></div> </td> </tr> <tr id="section-38"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-38">#</a> </div> <p>Attempt to match a string against the current chunk, returning the indexed
match if successful, and <code>false</code> otherwise.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">match: </span><span class="p">(</span><span class="nx">regex</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">m: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">regex</span><span class="p">)</span>
<span class="k">if</span> <span class="nx">m</span> <span class="k">then</span> <span class="nx">m</span><span class="p">[</span><span class="nx">index</span><span class="p">]</span> <span class="k">else</span> <span class="kc">false</span></pre></div> </td> </tr> <tr id="section-39"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-39">#</a> </div> <p>Are we in the midst of an unfinished expression?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">unfinished: </span><span class="o">-&gt;</span>
<span class="nv">prev: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
<span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">value</span><span class="p">().</span><span class="nx">match</span> <span class="o">and</span> <span class="err">@</span><span class="nx">value</span><span class="p">().</span><span class="nx">match</span><span class="p">(</span><span class="nx">NO_NEWLINE</span><span class="p">)</span> <span class="o">and</span>
<span class="nx">prev</span> <span class="o">and</span> <span class="p">(</span><span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;.&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">value</span><span class="p">().</span><span class="nx">match</span><span class="p">(</span><span class="nx">CODE</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-40"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-40">#</a> </div> <p>There are no exensions to the core lexer by default.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">Lexer.extensions: </span><span class="p">[]</span></pre></div> </td> </tr> <tr id="section-41"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-41">#</a> </div> <h2>Constants</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-42"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-42">#</a> </div> <p>Keywords that CoffeeScript shares in common with JavaScript.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">JS_KEYWORDS: </span><span class="p">[</span>
<span class="s2">&quot;if&quot;</span><span class="p">,</span> <span class="s2">&quot;else&quot;</span><span class="p">,</span>
<span class="s2">&quot;true&quot;</span><span class="p">,</span> <span class="s2">&quot;false&quot;</span><span class="p">,</span>
<span class="s2">&quot;new&quot;</span><span class="p">,</span> <span class="s2">&quot;return&quot;</span><span class="p">,</span>
<span class="s2">&quot;try&quot;</span><span class="p">,</span> <span class="s2">&quot;catch&quot;</span><span class="p">,</span> <span class="s2">&quot;finally&quot;</span><span class="p">,</span> <span class="s2">&quot;throw&quot;</span><span class="p">,</span>
<span class="s2">&quot;break&quot;</span><span class="p">,</span> <span class="s2">&quot;continue&quot;</span><span class="p">,</span>
<span class="s2">&quot;for&quot;</span><span class="p">,</span> <span class="s2">&quot;in&quot;</span><span class="p">,</span> <span class="s2">&quot;while&quot;</span><span class="p">,</span>
<span class="s2">&quot;delete&quot;</span><span class="p">,</span> <span class="s2">&quot;instanceof&quot;</span><span class="p">,</span> <span class="s2">&quot;typeof&quot;</span><span class="p">,</span>
<span class="s2">&quot;switch&quot;</span><span class="p">,</span> <span class="s2">&quot;super&quot;</span><span class="p">,</span> <span class="s2">&quot;extends&quot;</span><span class="p">,</span> <span class="s2">&quot;class&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-43"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-43">#</a> </div> <p>CoffeeScript-only keywords, which we're more relaxed about allowing. They can't
be used standalone, but you can reference them as an attached property.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">COFFEE_ALIASES: </span> <span class="p">[</span><span class="s2">&quot;and&quot;</span><span class="p">,</span> <span class="s2">&quot;or&quot;</span><span class="p">,</span> <span class="s2">&quot;is&quot;</span><span class="p">,</span> <span class="s2">&quot;isnt&quot;</span><span class="p">,</span> <span class="s2">&quot;not&quot;</span><span class="p">]</span>
<span class="nv">COFFEE_KEYWORDS: </span><span class="nx">COFFEE_ALIASES</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span>
<span class="s2">&quot;then&quot;</span><span class="p">,</span> <span class="s2">&quot;unless&quot;</span><span class="p">,</span>
<span class="s2">&quot;yes&quot;</span><span class="p">,</span> <span class="s2">&quot;no&quot;</span><span class="p">,</span> <span class="s2">&quot;on&quot;</span><span class="p">,</span> <span class="s2">&quot;off&quot;</span><span class="p">,</span>
<span class="s2">&quot;of&quot;</span><span class="p">,</span> <span class="s2">&quot;by&quot;</span><span class="p">,</span> <span class="s2">&quot;where&quot;</span><span class="p">,</span> <span class="s2">&quot;when&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-44"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-44">#</a> </div> <p>The combined list of keywords is the superset that gets passed verbatim to
the parser.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">KEYWORDS: </span><span class="nx">JS_KEYWORDS</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">COFFEE_KEYWORDS</span></pre></div> </td> </tr> <tr id="section-45"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-45">#</a> </div> <p>The list of keywords that are reserved by JavaScript, but not used, or are
used by CoffeeScript internally. We throw an error when these are encountered,
to avoid having a JavaScript error at runtime.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">RESERVED: </span><span class="p">[</span>
<span class="s2">&quot;case&quot;</span><span class="p">,</span> <span class="s2">&quot;default&quot;</span><span class="p">,</span> <span class="s2">&quot;do&quot;</span><span class="p">,</span> <span class="s2">&quot;function&quot;</span><span class="p">,</span> <span class="s2">&quot;var&quot;</span><span class="p">,</span> <span class="s2">&quot;void&quot;</span><span class="p">,</span> <span class="s2">&quot;with&quot;</span>
<span class="s2">&quot;const&quot;</span><span class="p">,</span> <span class="s2">&quot;let&quot;</span><span class="p">,</span> <span class="s2">&quot;debugger&quot;</span><span class="p">,</span> <span class="s2">&quot;enum&quot;</span><span class="p">,</span> <span class="s2">&quot;export&quot;</span><span class="p">,</span> <span class="s2">&quot;import&quot;</span><span class="p">,</span> <span class="s2">&quot;native&quot;</span><span class="p">,</span>
<span class="s2">&quot;__extends&quot;</span><span class="p">,</span> <span class="s2">&quot;__hasProp&quot;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-46"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-46">#</a> </div> <p>The superset of both JavaScript keywords and reserved words, none of which may
be used as identifiers or properties.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">JS_FORBIDDEN: </span><span class="nx">JS_KEYWORDS</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">RESERVED</span></pre></div> </td> </tr> <tr id="section-47"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-47">#</a> </div> <p>Token matching regexes.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">IDENTIFIER</span> <span class="o">:</span> <span class="sr">/^([a-zA-Z\$_](\w|\$)*)/</span>
<span class="nx">NUMBER</span> <span class="o">:</span> <span class="sr">/^(\b((0(x|X)[0-9a-fA-F]+)|([0-9]+(\.[0-9]+)?(e[+\-]?[0-9]+)?)))\b/i</span>
<span class="nx">HEREDOC</span> <span class="o">:</span> <span class="sr">/^(&quot;{6}|&#39;{6}|&quot;{3}\n?([\s\S]*?)\n?([ \t]*)&quot;{3}|&#39;{3}\n?([\s\S]*?)\n?([ \t]*)&#39;{3})/</span>
<span class="nx">INTERPOLATION</span> <span class="o">:</span> <span class="sr">/^\$([a-zA-Z_@]\w*(\.\w+)*)/</span>
<span class="nx">OPERATOR</span> <span class="o">:</span> <span class="sr">/^([+\*&amp;|\/\-%=&lt;&gt;:!?]+)([ \t]*)/</span>
<span class="nx">WHITESPACE</span> <span class="o">:</span> <span class="sr">/^([ \t]+)/</span>
<span class="nx">COMMENT</span> <span class="o">:</span> <span class="sr">/^(((\n?[ \t]*)?#[^\n]*)+)/</span>
<span class="nx">CODE</span> <span class="o">:</span> <span class="sr">/^((-|=)&gt;)/</span>
<span class="nx">MULTI_DENT</span> <span class="o">:</span> <span class="sr">/^((\n([ \t]*))+)(\.)?/</span>
<span class="nx">LAST_DENTS</span> <span class="o">:</span> <span class="sr">/\n([ \t]*)/g</span>
<span class="nx">LAST_DENT</span> <span class="o">:</span> <span class="sr">/\n([ \t]*)/</span>
<span class="nx">ASSIGNMENT</span> <span class="o">:</span> <span class="sr">/^(:|=)$/</span></pre></div> </td> </tr> <tr id="section-48"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-48">#</a> </div> <p>Regex-matching-regexes.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">REGEX_START</span> <span class="o">:</span> <span class="sr">/^\/[^\/ ]/</span>
<span class="nv">REGEX_INTERPOLATION: </span><span class="sr">/([^\\]\$[a-zA-Z_@]|[^\\]\$\{.*[^\\]\})/</span>
<span class="nx">REGEX_FLAGS</span> <span class="o">:</span> <span class="sr">/^[imgy]{0,4}/</span>
<span class="nx">REGEX_ESCAPE</span> <span class="o">:</span> <span class="sr">/\\[^\$]/g</span></pre></div> </td> </tr> <tr id="section-49"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-49">#</a> </div> <p>Token cleaning regexes.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">JS_CLEANER</span> <span class="o">:</span> <span class="sr">/(^`|`$)/g</span>
<span class="nx">MULTILINER</span> <span class="o">:</span> <span class="sr">/\n/g</span>
<span class="nx">STRING_NEWLINES</span> <span class="o">:</span> <span class="sr">/\n[ \t]*/g</span>
<span class="nx">COMMENT_CLEANER</span> <span class="o">:</span> <span class="sr">/(^[ \t]*#|\n[ \t]*$)/mg</span>
<span class="nx">NO_NEWLINE</span> <span class="o">:</span> <span class="sr">/^([+\*&amp;|\/\-%=&lt;&gt;:!.\\][&lt;&gt;=&amp;|]*|and|or|is|isnt|not|delete|typeof|instanceof)$/</span>
<span class="nx">HEREDOC_INDENT</span> <span class="o">:</span> <span class="sr">/^[ \t]+/mg</span></pre></div> </td> </tr> <tr id="section-50"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-50">#</a> </div> <p>Tokens which a regular expression will never immediately follow, but which
a division operator might.</p>
<p>See: <a href='http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions'>http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions</a></p>
<p>Our list is shorter, due to sans-parentheses method calls.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">NOT_REGEX: </span><span class="p">[</span>
<span class="s1">&#39;NUMBER&#39;</span><span class="p">,</span> <span class="s1">&#39;REGEX&#39;</span><span class="p">,</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="s1">&#39;--&#39;</span><span class="p">,</span> <span class="s1">&#39;FALSE&#39;</span><span class="p">,</span> <span class="s1">&#39;NULL&#39;</span><span class="p">,</span> <span class="s1">&#39;TRUE&#39;</span>
<span class="p">]</span></pre></div> </td> </tr> <tr id="section-51"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-51">#</a> </div> <p>Tokens which could legitimately be invoked or indexed. A opening
parentheses or bracket following these tokens will be recorded as the start
of a function invocation or indexing operation.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">CALLABLE: </span><span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="s1">&#39;SUPER&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="s1">&#39;]&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">,</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s1">&#39;@&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-52"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-52">#</a> </div> <p>Tokens that indicate an access -- keywords immediately following will be
treated as identifiers.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">ACCESSORS: </span><span class="p">[</span><span class="s1">&#39;PROPERTY_ACCESS&#39;</span><span class="p">,</span> <span class="s1">&#39;PROTOTYPE_ACCESS&#39;</span><span class="p">,</span> <span class="s1">&#39;SOAK_ACCESS&#39;</span><span class="p">,</span> <span class="s1">&#39;@&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-53"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-53">#</a> </div> <p>Tokens that, when immediately preceding a <code>WHEN</code>, indicate that the <code>WHEN</code>
occurs at the start of a line. We disambiguate these from trailing whens to
avoid an ambiguity in the grammar.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">LINE_BREAK: </span><span class="p">[</span><span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-54"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-54">#</a> </div> <p>Half-assignments...</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">HALF_ASSIGNMENTS: </span><span class="p">[</span><span class="s1">&#39;-&#39;</span><span class="p">,</span> <span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="s1">&#39;/&#39;</span><span class="p">,</span> <span class="s1">&#39;*&#39;</span><span class="p">,</span> <span class="s1">&#39;%&#39;</span><span class="p">,</span> <span class="s1">&#39;||&#39;</span><span class="p">,</span> <span class="s1">&#39;&amp;&amp;&#39;</span><span class="p">,</span> <span class="s1">&#39;?&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-55">#</a> </div> <p>Conversions from CoffeeScript operators into JavaScript ones.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">CONVERSIONS: </span><span class="p">{</span>
<span class="s1">&#39;and&#39;</span><span class="o">:</span> <span class="s1">&#39;&amp;&amp;&#39;</span>
<span class="s1">&#39;or&#39;</span><span class="o">:</span> <span class="s1">&#39;||&#39;</span>
<span class="s1">&#39;is&#39;</span><span class="o">:</span> <span class="s1">&#39;==&#39;</span>
<span class="s1">&#39;isnt&#39;</span><span class="o">:</span> <span class="s1">&#39;!=&#39;</span>
<span class="s1">&#39;not&#39;</span><span class="o">:</span> <span class="s1">&#39;!&#39;</span>
<span class="p">}</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,938 +0,0 @@
<!DOCTYPE html> <html> <head> <title>nodes.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> nodes.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p><code>nodes.coffee</code> contains all of the node classes for the syntax tree. Most
nodes are created as the result of actions in the <a href="grammar.html">grammar</a>,
but some are created by other nodes as a method of code generation. To convert
the syntax tree into a string of JavaScript code, call <code>compile()</code> on the root.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Set up for both <strong>Node.js</strong> and the browser, by
including the <a href="scope.html">Scope</a> class.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">if</span> <span class="nx">process</span><span class="o">?</span>
<span class="nv">Scope: </span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./scope&#39;</span><span class="p">).</span><span class="nx">Scope</span>
<span class="nv">helpers: </span><span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./helpers&#39;</span><span class="p">).</span><span class="nx">helpers</span>
<span class="k">else</span>
<span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span>
<span class="nv">helpers: </span> <span class="k">this</span><span class="p">.</span><span class="nx">helpers</span>
<span class="nv">Scope: </span> <span class="k">this</span><span class="p">.</span><span class="nx">Scope</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Import the helpers we need.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">compact: </span><span class="nx">helpers</span><span class="p">.</span><span class="nx">compact</span>
<span class="nv">flatten: </span><span class="nx">helpers</span><span class="p">.</span><span class="nx">flatten</span>
<span class="nv">merge: </span> <span class="nx">helpers</span><span class="p">.</span><span class="nx">merge</span>
<span class="nv">del: </span> <span class="nx">helpers</span><span class="p">.</span><span class="nx">del</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Helper function that marks a node as a JavaScript <em>statement</em>, or as a
<em>pure_statement</em>. Statements must be wrapped in a closure when used as an
expression, and nodes tagged as <em>pure_statement</em> cannot be closure-wrapped
without losing their meaning.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">statement: </span><span class="p">(</span><span class="nx">klass</span><span class="p">,</span> <span class="nx">only</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">klass::is_statement: </span><span class="o">-&gt;</span> <span class="kc">true</span>
<span class="p">(</span><span class="nv">klass::is_pure_statement: </span><span class="o">-&gt;</span> <span class="kc">true</span><span class="p">)</span> <span class="k">if</span> <span class="nx">only</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <h3>BaseNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>The <strong>BaseNode</strong> is the abstract base class for all nodes in the syntax tree.
Each subclass implements the <code>compile_node</code> method, which performs the
code generation for that node. To compile a node to JavaScript,
call <code>compile</code> on it, which wraps <code>compile_node</code> in some generic extra smarts,
to know when the generated code needs to be wrapped up in a closure.
An options hash is passed and cloned throughout, containing information about
the environment from higher in the tree (such as if a returned value is
being requested by the surrounding function), information about the current
scope, and indentation level.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.BaseNode: </span><span class="nx">class</span> <span class="nx">BaseNode</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>Common logic for determining whether to wrap this node in a closure before
compiling it, or to compile directly. We need to wrap if this node is a
<em>statement</em>, and it's not a <em>pure_statement</em>, and we're not at
the top level of a block (which would be unnecessary), and we haven't
already been asked to return the result (because statements know how to
return results).</p>
<p>If a Node is <em>top_sensitive</em>, that means that it needs to compile differently
depending on whether it's being used as part of a larger expression, or is a
top-level statement within the function body.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">options: </span><span class="nx">merge</span> <span class="nx">o</span> <span class="o">or</span> <span class="p">{}</span>
<span class="err">@</span><span class="nv">tab: </span> <span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
<span class="nx">del</span> <span class="err">@</span><span class="nx">options</span><span class="p">,</span> <span class="s1">&#39;operation&#39;</span> <span class="nx">unless</span> <span class="k">this</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span>
<span class="nv">top: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">top_sensitive</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">options</span><span class="p">.</span><span class="nx">top</span> <span class="k">else</span> <span class="nx">del</span> <span class="err">@</span><span class="nx">options</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span>
<span class="nv">closure: </span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">is_pure_statement</span><span class="p">()</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">top</span> <span class="o">and</span>
<span class="o">not</span> <span class="err">@</span><span class="nx">options</span><span class="p">.</span><span class="nx">as_statement</span> <span class="o">and</span> <span class="o">not</span> <span class="p">(</span><span class="k">this</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span><span class="p">)</span> <span class="o">and</span>
<span class="o">not</span> <span class="err">@</span><span class="nx">contains_pure_statement</span><span class="p">()</span>
<span class="k">if</span> <span class="nx">closure</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_closure</span><span class="p">(</span><span class="err">@</span><span class="nx">options</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_node</span><span class="p">(</span><span class="err">@</span><span class="nx">options</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Statements converted into expressions via closure-wrapping share a scope
object with their parent closure, to preserve the expected lexical scope.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_closure: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">tab: </span><span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
<span class="nv">o.shared_scope: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span>
<span class="nx">ClosureNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="k">this</span><span class="p">).</span><span class="nx">compile</span> <span class="nx">o</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>If the code generation wishes to use the result of a complex expression
in multiple places, ensure that the expression is only ever evaluated once,
by assigning it to a temporary variable.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_reference: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">reference: </span><span class="nx">literal</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">compiled: </span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="nx">reference</span><span class="p">,</span> <span class="k">this</span>
<span class="p">[</span><span class="nx">compiled</span><span class="p">,</span> <span class="nx">reference</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>Convenience method to grab the current indentation level, plus tabbing in.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">idt: </span><span class="p">(</span><span class="nx">tabs</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">idt: </span><span class="err">@</span><span class="nx">tab</span> <span class="o">or</span> <span class="s1">&#39;&#39;</span>
<span class="nv">num: </span><span class="p">(</span><span class="nx">tabs</span> <span class="o">or</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
<span class="nv">idt: </span><span class="o">+</span> <span class="nx">TAB</span> <span class="k">while</span> <span class="nv">num: </span><span class="o">-</span> <span class="mi">1</span>
<span class="nx">idt</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Construct a node that returns the current node's result.
Note that this is overridden for smarter behavior for
many statement nodes (eg IfNode, ForNode)...</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="k">new</span> <span class="nx">ReturnNode</span> <span class="k">this</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-12">#</a> </div> <p>Does this node, or any of its children, contain a node of a certain kind?
Recursively traverses down the <em>children</em> of the nodes, yielding to a block
and returning true when the block finds a match. <code>contains</code> does not cross
scope boundaries.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">contains: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">for</span> <span class="nx">node</span> <span class="k">in</span> <span class="err">@</span><span class="nx">children</span>
<span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="nx">block</span><span class="p">(</span><span class="nx">node</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="nx">node</span><span class="p">.</span><span class="nx">contains</span> <span class="o">and</span> <span class="nx">node</span><span class="p">.</span><span class="nx">contains</span> <span class="nx">block</span>
<span class="kc">false</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-13">#</a> </div> <p>Convenience for the most common use of contains. Does the node contain
a pure statement?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">contains_pure_statement: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">is_pure_statement</span><span class="p">()</span> <span class="o">or</span> <span class="err">@</span><span class="nx">contains</span> <span class="p">(</span><span class="nx">n</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">n</span><span class="p">.</span><span class="nx">is_pure_statement</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-14">#</a> </div> <p>Perform an in-order traversal of the AST. Crosses scope boundaries.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">traverse: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">for</span> <span class="nx">node</span> <span class="k">in</span> <span class="err">@</span><span class="nx">children</span>
<span class="nx">block</span> <span class="nx">node</span>
<span class="nx">node</span><span class="p">.</span><span class="nx">traverse</span> <span class="nx">block</span> <span class="k">if</span> <span class="nx">node</span><span class="p">.</span><span class="nx">traverse</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-15">#</a> </div> <p><code>toString</code> representation of the node, for inspecting the parse tree.
This is what <code>coffee --nodes</code> prints out.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">toString: </span><span class="p">(</span><span class="nx">idt</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">idt: </span><span class="o">or</span> <span class="s1">&#39;&#39;</span>
<span class="s1">&#39;\n&#39;</span> <span class="o">+</span> <span class="nx">idt</span> <span class="o">+</span> <span class="err">@</span><span class="nx">type</span> <span class="o">+</span> <span class="p">(</span><span class="nx">child</span><span class="p">.</span><span class="nx">toString</span><span class="p">(</span><span class="nx">idt</span> <span class="o">+</span> <span class="nx">TAB</span><span class="p">)</span> <span class="k">for</span> <span class="nx">child</span> <span class="k">in</span> <span class="err">@</span><span class="nx">children</span><span class="p">).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-16">#</a> </div> <p>Default implementations of the common node identification methods. Nodes
will override these with custom logic, if needed.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">unwrap: </span> <span class="o">-&gt;</span> <span class="k">this</span>
<span class="nv">children: </span> <span class="p">[]</span>
<span class="nv">is_statement: </span> <span class="o">-&gt;</span> <span class="kc">false</span>
<span class="nv">is_pure_statement: </span> <span class="o">-&gt;</span> <span class="kc">false</span>
<span class="nv">top_sensitive: </span> <span class="o">-&gt;</span> <span class="kc">false</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-17">#</a> </div> <h3>Expressions</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-18">#</a> </div> <p>The expressions body is the list of expressions that forms the body of an
indented block of code -- the implementation of a function, a clause in an
<code>if</code>, <code>switch</code>, or <code>try</code>, and so on...</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.Expressions: </span><span class="nx">class</span> <span class="nx">Expressions</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Expressions&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">nodes</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="err">@</span><span class="nv">expressions: </span><span class="nx">compact</span> <span class="nx">flatten</span> <span class="nx">nodes</span> <span class="o">or</span> <span class="p">[]</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-19">#</a> </div> <p>Tack an expression on to the end of this expression list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">push: </span><span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">node</span><span class="p">)</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-20">#</a> </div> <p>Add an expression at the beginning of this expression list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">unshift: </span><span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">unshift</span><span class="p">(</span><span class="nx">node</span><span class="p">)</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-21">#</a> </div> <p>If this Expressions consists of just a single node, unwrap it by pulling
it back out.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">unwrap: </span><span class="o">-&gt;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span> <span class="o">is</span> <span class="mi">1</span> <span class="k">then</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">else</span> <span class="k">this</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-22">#</a> </div> <p>Is this an empty block of code?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">empty: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span> <span class="o">is</span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-23">#</a> </div> <p>Make a copy of this node.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">copy: </span><span class="o">-&gt;</span>
<span class="k">new</span> <span class="nx">Expressions</span> <span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-24">#</a> </div> <p>An Expressions node does not return its entire body, rather it
ensures that the final expression is returned.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="nv">idx: </span> <span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nv">last: </span><span class="err">@</span><span class="nx">expressions</span><span class="p">[</span><span class="nx">idx</span><span class="p">]</span>
<span class="nv">last: </span><span class="err">@</span><span class="nx">expressions</span><span class="p">[</span><span class="nv">idx: </span><span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">if</span> <span class="nx">last</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span>
<span class="k">return</span> <span class="k">this</span> <span class="k">if</span> <span class="o">not</span> <span class="nx">last</span> <span class="o">or</span> <span class="nx">last</span> <span class="k">instanceof</span> <span class="nx">ReturnNode</span>
<span class="err">@</span><span class="nx">expressions</span><span class="p">[</span><span class="nx">idx</span><span class="p">]</span><span class="o">:</span> <span class="nx">last</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">last</span><span class="p">.</span><span class="nx">contains_pure_statement</span><span class="p">()</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-25">#</a> </div> <p>An <strong>Expressions</strong> is the only node that can serve as the root.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o: </span><span class="o">or</span> <span class="p">{}</span>
<span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span> <span class="k">then</span> <span class="k">super</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_root</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="p">(</span><span class="err">@</span><span class="nx">compile_expression</span><span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span> <span class="k">for</span> <span class="nx">node</span> <span class="k">in</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">).</span><span class="nx">join</span><span class="p">(</span><span class="s2">&quot;\n&quot;</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-26">#</a> </div> <p>If we happen to be the top-level <strong>Expressions</strong>, wrap everything in
a safety closure, unless requested not to.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_root: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o.indent: </span><span class="err">@</span><span class="nv">tab: </span><span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">no_wrap</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="nx">TAB</span>
<span class="nv">o.scope: </span><span class="k">new</span> <span class="nx">Scope</span><span class="p">(</span><span class="kc">null</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="kc">null</span><span class="p">)</span>
<span class="nv">code: </span><span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">globals</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_node</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_with_declarations</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">code: </span><span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">TRAILING_WHITESPACE</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">no_wrap</span> <span class="k">then</span> <span class="nx">code</span> <span class="k">else</span> <span class="s2">&quot;(function(){\n$code\n})();\n&quot;</span></pre></div> </td> </tr> <tr id="section-27"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-27">#</a> </div> <p>Compile the expressions body for the contents of a function, with
declarations of all inner variables pushed up to the top.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_with_declarations: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">code: </span><span class="err">@</span><span class="nx">compile_node</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">code: </span><span class="s2">&quot;${@tab}var ${o.scope.compiled_assignments()};\n$code&quot;</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">has_assignments</span><span class="p">(</span><span class="k">this</span><span class="p">)</span>
<span class="nv">code: </span><span class="s2">&quot;${@tab}var ${o.scope.compiled_declarations()};\n$code&quot;</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">has_declarations</span><span class="p">(</span><span class="k">this</span><span class="p">)</span>
<span class="nx">code</span></pre></div> </td> </tr> <tr id="section-28"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-28">#</a> </div> <p>Compiles a single expression within the expressions body. If we need to
return the result, and it's an expression, simply return it. If it's a
statement, ask the statement to do so.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_expression: </span><span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">tab: </span><span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
<span class="nv">compiled_node: </span><span class="nx">node</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">merge</span> <span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">top: </span><span class="kc">true</span><span class="p">}</span>
<span class="k">if</span> <span class="nx">node</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="nx">compiled_node</span> <span class="k">else</span> <span class="s2">&quot;${@idt()}$compiled_node;&quot;</span></pre></div> </td> </tr> <tr id="section-29"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-29">#</a> </div> <p>Wrap up the given nodes as an <strong>Expressions</strong>, unless it already happens
to be one.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">Expressions.wrap: </span><span class="p">(</span><span class="nx">nodes</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="nx">nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="nx">nodes</span><span class="p">.</span><span class="nx">length</span> <span class="o">is</span> <span class="mi">1</span> <span class="o">and</span> <span class="nx">nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">instanceof</span> <span class="nx">Expressions</span>
<span class="k">new</span> <span class="nx">Expressions</span><span class="p">(</span><span class="nx">nodes</span><span class="p">)</span>
<span class="nx">statement</span> <span class="nx">Expressions</span></pre></div> </td> </tr> <tr id="section-30"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-30">#</a> </div> <h3>LiteralNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-31"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-31">#</a> </div> <p>Literals are static values that can be passed through directly into
JavaScript without translation, such as: strings, numbers,
<code>true</code>, <code>false</code>, <code>null</code>...</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.LiteralNode: </span><span class="nx">class</span> <span class="nx">LiteralNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Literal&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">value: </span><span class="nx">value</span></pre></div> </td> </tr> <tr id="section-32"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-32">#</a> </div> <p>Break and continue must be treated as pure statements -- they lose their
meaning when wrapped in a closure.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">is_statement: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;break&#39;</span> <span class="o">or</span> <span class="err">@</span><span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;continue&#39;</span>
<span class="nv">is_pure_statement: </span><span class="nx">LiteralNode</span><span class="o">::</span><span class="nx">is_statement</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">idt: </span><span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">end: </span><span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="s1">&#39;;&#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="s2">&quot;$idt$@value$end&quot;</span>
<span class="nv">toString: </span><span class="p">(</span><span class="nx">idt</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="s2">&quot; \&quot;$@value\&quot;&quot;</span></pre></div> </td> </tr> <tr id="section-33"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-33">#</a> </div> <h3>ReturnNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-34"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-34">#</a> </div> <p>A <code>return</code> is a <em>pure_statement</em> -- wrapping it in a closure wouldn't
make sense.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ReturnNode: </span><span class="nx">class</span> <span class="nx">ReturnNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Return&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o.as_statement: </span><span class="kc">true</span> <span class="k">if</span> <span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span>
<span class="s2">&quot;${@tab}return ${@expression.compile(o)};&quot;</span>
<span class="nx">statement</span> <span class="nx">ReturnNode</span><span class="p">,</span> <span class="kc">true</span></pre></div> </td> </tr> <tr id="section-35"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-35">#</a> </div> <h3>ValueNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-36"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-36">#</a> </div> <p>A value, variable or literal or parenthesized, indexed or dotted into,
or vanilla.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ValueNode: </span><span class="nx">class</span> <span class="nx">ValueNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Value&#39;</span>
<span class="nv">SOAK: </span><span class="s2">&quot; == undefined ? undefined : &quot;</span></pre></div> </td> </tr> <tr id="section-37"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-37">#</a> </div> <p>A <strong>ValueNode</strong> has a base and a list of property accesses.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">constructor: </span><span class="p">(</span><span class="nx">base</span><span class="p">,</span> <span class="nx">properties</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span> <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nv">base: </span><span class="nx">base</span><span class="p">,</span> <span class="err">@</span><span class="nv">properties: </span><span class="p">(</span><span class="nx">properties</span> <span class="o">or</span> <span class="p">[])]</span></pre></div> </td> </tr> <tr id="section-38"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-38">#</a> </div> <p>Add a property access to the list.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">push: </span><span class="p">(</span><span class="nx">prop</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">prop</span><span class="p">)</span>
<span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">prop</span><span class="p">)</span>
<span class="k">this</span>
<span class="nv">has_properties: </span><span class="o">-&gt;</span>
<span class="o">!!</span><span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span></pre></div> </td> </tr> <tr id="section-39"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-39">#</a> </div> <p>Some boolean checks for the benefit of other nodes.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">is_array: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">ArrayNode</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span>
<span class="nv">is_object: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">ObjectNode</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span>
<span class="nv">is_splice: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">properties</span><span class="p">[</span><span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">instanceof</span> <span class="nx">SliceNode</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span> <span class="k">then</span> <span class="k">super</span><span class="p">()</span> <span class="k">else</span> <span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-40"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-40">#</a> </div> <p>The value can be unwrapped as its inner node, if there are no attached
properties.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">unwrap: </span><span class="o">-&gt;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="k">then</span> <span class="k">this</span> <span class="k">else</span> <span class="err">@</span><span class="nx">base</span></pre></div> </td> </tr> <tr id="section-41"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-41">#</a> </div> <p>Values are considered to be statements if their base is a statement.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">is_statement: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">is_statement</span> <span class="o">and</span> <span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-42"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-42">#</a> </div> <p>We compile a value to JavaScript by compiling and joining each property.
Things get much more insteresting if the chain of properties has <em>soak</em>
operators <code>?.</code> interspersed. Then we have to take care not to accidentally
evaluate a anything twice when building the soak chain.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">soaked: </span> <span class="kc">false</span>
<span class="nv">only: </span> <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;only_first&#39;</span><span class="p">)</span>
<span class="nv">op: </span> <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;operation&#39;</span><span class="p">)</span>
<span class="nv">props: </span> <span class="k">if</span> <span class="nx">only</span> <span class="k">then</span> <span class="err">@</span><span class="nx">properties</span><span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="err">@</span><span class="nx">properties</span>
<span class="nv">baseline: </span><span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="nv">baseline: </span><span class="s2">&quot;($baseline)&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">ObjectNode</span> <span class="o">and</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span>
<span class="nv">complete: </span><span class="err">@</span><span class="nv">last: </span><span class="nx">baseline</span>
<span class="k">for</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">props</span>
<span class="err">@</span><span class="nv">source: </span><span class="nx">baseline</span>
<span class="k">if</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">soak_node</span>
<span class="nv">soaked: </span><span class="kc">true</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">CallNode</span> <span class="o">and</span> <span class="nx">prop</span> <span class="o">is</span> <span class="nx">props</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="nv">temp: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">complete: </span><span class="s2">&quot;($temp = $complete)$@SOAK&quot;</span> <span class="o">+</span> <span class="p">(</span><span class="nv">baseline: </span><span class="nx">temp</span> <span class="o">+</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span>
<span class="k">else</span>
<span class="nv">complete: </span><span class="nx">complete</span> <span class="o">+</span> <span class="err">@</span><span class="nx">SOAK</span> <span class="o">+</span> <span class="p">(</span><span class="nv">baseline: </span><span class="o">+</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span>
<span class="k">else</span>
<span class="nv">part: </span><span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">baseline: </span><span class="o">+</span> <span class="nx">part</span>
<span class="nv">complete: </span><span class="o">+</span> <span class="nx">part</span>
<span class="err">@</span><span class="nv">last: </span><span class="nx">part</span>
<span class="k">if</span> <span class="nx">op</span> <span class="o">and</span> <span class="nx">soaked</span> <span class="k">then</span> <span class="s2">&quot;($complete)&quot;</span> <span class="k">else</span> <span class="nx">complete</span></pre></div> </td> </tr> <tr id="section-43"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-43">#</a> </div> <h3>CommentNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-44"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-44">#</a> </div> <p>CoffeeScript passes through comments as JavaScript comments at the
same position.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.CommentNode: </span><span class="nx">class</span> <span class="nx">CommentNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Comment&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">lines</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">lines: </span><span class="nx">lines</span>
<span class="k">this</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="k">this</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="s2">&quot;$@tab//&quot;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">lines</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s2">&quot;\n$@tab//&quot;</span><span class="p">)</span>
<span class="nx">statement</span> <span class="nx">CommentNode</span></pre></div> </td> </tr> <tr id="section-45"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-45">#</a> </div> <h3>CallNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-46"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-46">#</a> </div> <p>Node for a function invocation. Takes care of converting <code>super()</code> calls into
calls against the prototype's function of the same name.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.CallNode: </span><span class="nx">class</span> <span class="nx">CallNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Call&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">args</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">is_new: </span> <span class="kc">false</span>
<span class="err">@</span><span class="nv">is_super: </span><span class="nx">variable</span> <span class="o">is</span> <span class="s1">&#39;super&#39;</span>
<span class="err">@</span><span class="nv">variable: </span><span class="k">if</span> <span class="err">@</span><span class="nx">is_super</span> <span class="k">then</span> <span class="kc">null</span> <span class="k">else</span> <span class="nx">variable</span>
<span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nv">args: </span><span class="p">(</span><span class="nx">args</span> <span class="o">or</span> <span class="p">[])]</span>
<span class="err">@</span><span class="nv">compile_splat_arguments: </span><span class="nx">SplatNode</span><span class="p">.</span><span class="nx">compile_mixed_array</span> <span class="o">&lt;-</span> <span class="err">@</span><span class="p">,</span> <span class="err">@</span><span class="nx">args</span></pre></div> </td> </tr> <tr id="section-47"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-47">#</a> </div> <p>Tag this invocation as creating a new instance.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">new_instance: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">is_new: </span><span class="kc">true</span>
<span class="k">this</span>
<span class="nv">prefix: </span><span class="o">-&gt;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">is_new</span> <span class="k">then</span> <span class="s1">&#39;new &#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span></pre></div> </td> </tr> <tr id="section-48"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-48">#</a> </div> <p>Compile a vanilla function call.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="err">@</span><span class="nx">args</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_splat</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="nx">arg</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span>
<span class="nv">args: </span><span class="p">(</span><span class="nx">arg</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="err">@</span><span class="nx">args</span><span class="p">).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;, &#39;</span><span class="p">)</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_super</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_super</span>
<span class="s2">&quot;${@prefix()}${@variable.compile(o)}($args)&quot;</span></pre></div> </td> </tr> <tr id="section-49"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-49">#</a> </div> <p><code>super()</code> is converted into a call against the superclass's implementation
of the current function.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_super: </span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">methname: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">method</span><span class="p">.</span><span class="nx">name</span>
<span class="nv">meth: </span><span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">method</span><span class="p">.</span><span class="nx">proto</span>
<span class="s2">&quot;${o.scope.method.proto}.__superClass__.$methname&quot;</span>
<span class="k">else</span>
<span class="s2">&quot;${methname}.__superClass__.constructor&quot;</span>
<span class="s2">&quot;${meth}.call(this${ if args.length then &#39;, &#39; else &#39;&#39; }$args)&quot;</span></pre></div> </td> </tr> <tr id="section-50"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-50">#</a> </div> <p>If you call a function with a splat, it's converted into a JavaScript
<code>.apply()</code> call to allow an array of arguments to be passed.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_splat: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">meth: </span><span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="nv">obj: </span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">source</span> <span class="o">or</span> <span class="s1">&#39;this&#39;</span>
<span class="k">if</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="sr">/\(/</span><span class="p">)</span>
<span class="nv">temp: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">obj: </span> <span class="nx">temp</span>
<span class="nv">meth: </span><span class="s2">&quot;($temp = ${ @variable.source })${ @variable.last }&quot;</span>
<span class="s2">&quot;${@prefix()}${meth}.apply($obj, ${ @compile_splat_arguments(o) })&quot;</span></pre></div> </td> </tr> <tr id="section-51"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-51">#</a> </div> <h3>CurryNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-52"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-52">#</a> </div> <p>Binds a context object and a list of arguments to a function,
returning the bound function. After ECMAScript 5, Prototype.js, and
Underscore's <code>bind</code> functions.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.CurryNode: </span><span class="nx">class</span> <span class="nx">CurryNode</span> <span class="k">extends</span> <span class="nx">CallNode</span>
<span class="nv">type: </span><span class="s1">&#39;Curry&#39;</span>
<span class="nv">body: </span><span class="s1">&#39;func.apply(obj, args.concat(Array.prototype.slice.call(arguments, 0)))&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">meth</span><span class="p">,</span> <span class="nx">args</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span> <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nv">meth: </span><span class="nx">meth</span><span class="p">,</span> <span class="err">@</span><span class="nv">context: </span><span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="err">@</span><span class="nv">args: </span><span class="p">(</span><span class="nx">args</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span> <span class="o">or</span> <span class="p">[])]</span>
<span class="err">@</span><span class="nv">compile_splat_arguments: </span><span class="nx">SplatNode</span><span class="p">.</span><span class="nx">compile_mixed_array</span> <span class="o">&lt;-</span> <span class="err">@</span><span class="p">,</span> <span class="err">@</span><span class="nx">args</span>
<span class="nv">arguments: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="err">@</span><span class="nx">args</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_splat_arguments</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="nx">arg</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span>
<span class="p">(</span><span class="k">new</span> <span class="nx">ArrayNode</span><span class="p">(</span><span class="err">@</span><span class="nx">args</span><span class="p">)).</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">body: </span><span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">literal</span> <span class="err">@</span><span class="nx">body</span><span class="p">])</span>
<span class="nv">curried: </span><span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([],</span> <span class="nx">body</span><span class="p">)</span>
<span class="nv">curry: </span><span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;func&#39;</span><span class="p">),</span> <span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">),</span> <span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;args&#39;</span><span class="p">)],</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">curried</span><span class="p">]))</span>
<span class="p">(</span><span class="k">new</span> <span class="nx">ParentheticalNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="nx">curry</span><span class="p">,</span> <span class="p">[</span><span class="err">@</span><span class="nx">meth</span><span class="p">,</span> <span class="err">@</span><span class="nx">context</span><span class="p">,</span> <span class="nx">literal</span><span class="p">(</span><span class="err">@</span><span class="nx">arguments</span><span class="p">(</span><span class="nx">o</span><span class="p">))]))).</span><span class="nx">compile</span> <span class="nx">o</span></pre></div> </td> </tr> <tr id="section-53"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-53">#</a> </div> <h3>ExtendsNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-54"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-54">#</a> </div> <p>Node to extend an object's prototype with an ancestor object.
After <code>goog.inherits</code> from the
<a href="http://closure-library.googlecode.com/svn/docs/closure_goog_base.js.html">Closure Library</a>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ExtendsNode: </span><span class="nx">class</span> <span class="nx">ExtendsNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Extends&#39;</span>
<span class="nv">code: </span><span class="s1">&#39;&#39;&#39;</span>
<span class="s1"> function(child, parent) {</span>
<span class="s1"> var ctor = function(){ };</span>
<span class="s1"> ctor.prototype = parent.prototype;</span>
<span class="s1"> child.__superClass__ = parent.prototype;</span>
<span class="s1"> child.prototype = new ctor();</span>
<span class="s1"> child.prototype.constructor = child;</span>
<span class="s1"> }</span>
<span class="s1"> &#39;&#39;&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">child</span><span class="p">,</span> <span class="nx">parent</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">child: </span><span class="nx">child</span><span class="p">,</span> <span class="err">@</span><span class="nv">parent: </span><span class="nx">parent</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-55">#</a> </div> <p>Hooks one constructor into another's prototype chain.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">assign</span><span class="p">(</span><span class="s1">&#39;__extends&#39;</span><span class="p">,</span> <span class="err">@</span><span class="nx">code</span><span class="p">,</span> <span class="kc">true</span><span class="p">)</span>
<span class="nv">ref: </span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;__extends&#39;</span><span class="p">)</span>
<span class="nv">call: </span><span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">ref</span><span class="p">,</span> <span class="p">[</span><span class="err">@</span><span class="nx">child</span><span class="p">,</span> <span class="err">@</span><span class="nx">parent</span><span class="p">]</span>
<span class="nx">call</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-56"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-56">#</a> </div> <h3>AccessorNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-57"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-57">#</a> </div> <p>A <code>.</code> accessor into a property of a value, or the <code>::</code> shorthand for
an accessor into the object's prototype.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.AccessorNode: </span><span class="nx">class</span> <span class="nx">AccessorNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Accessor&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">name: </span><span class="nx">name</span><span class="p">]</span>
<span class="err">@</span><span class="nv">prototype: </span><span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;prototype&#39;</span>
<span class="err">@</span><span class="nv">soak_node: </span><span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;soak&#39;</span>
<span class="k">this</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">proto_part: </span><span class="k">if</span> <span class="err">@</span><span class="nx">prototype</span> <span class="k">then</span> <span class="s1">&#39;prototype.&#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="s2">&quot;.$proto_part${@name.compile(o)}&quot;</span></pre></div> </td> </tr> <tr id="section-58"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-58">#</a> </div> <h3>IndexNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-59"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-59">#</a> </div> <p>A <code>[ ... ]</code> indexed accessor into an array or object.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.IndexNode: </span><span class="nx">class</span> <span class="nx">IndexNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Index&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">index</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">index: </span><span class="nx">index</span><span class="p">]</span>
<span class="err">@</span><span class="nv">soak_node: </span><span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;soak&#39;</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">idx: </span><span class="err">@</span><span class="nx">index</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="s2">&quot;[$idx]&quot;</span></pre></div> </td> </tr> <tr id="section-60"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-60">#</a> </div> <h3>RangeNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-61"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-61">#</a> </div> <p>A range literal. Ranges can be used to extract portions (slices) of arrays,
to specify a range for comprehensions, or as a value, to be expanded into the
corresponding array of integers at runtime.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.RangeNode: </span><span class="nx">class</span> <span class="nx">RangeNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Range&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">from</span><span class="p">,</span> <span class="nx">to</span><span class="p">,</span> <span class="nx">exclusive</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">from: </span><span class="nx">from</span><span class="p">,</span> <span class="err">@</span><span class="nv">to: </span><span class="nx">to</span><span class="p">]</span>
<span class="err">@</span><span class="nv">exclusive: </span><span class="o">!!</span><span class="nx">exclusive</span></pre></div> </td> </tr> <tr id="section-62"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-62">#</a> </div> <p>Compiles the range's source variables -- where it starts and where it ends.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_variables: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">tab: </span><span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
<span class="p">[</span><span class="err">@</span><span class="nx">from_var</span><span class="p">,</span> <span class="err">@</span><span class="nx">to_var</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">(),</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()]</span>
<span class="p">[</span><span class="nx">from</span><span class="p">,</span> <span class="nx">to</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">from</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">to</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
<span class="s2">&quot;$@from_var = $from; $@to_var = $to;\n$@tab&quot;</span></pre></div> </td> </tr> <tr id="section-63"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-63">#</a> </div> <p>When compiled normally, the range returns the contents of the <em>for loop</em>
needed to iterate over the values in the range. Used by comprehensions.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_array</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">o</span><span class="p">.</span><span class="nx">index</span>
<span class="nv">idx: </span> <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;index&#39;</span>
<span class="nv">step: </span> <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;step&#39;</span>
<span class="nv">vars: </span> <span class="s2">&quot;$idx = $@from_var&quot;</span>
<span class="nv">step: </span> <span class="k">if</span> <span class="nx">step</span> <span class="k">then</span> <span class="nx">step</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;1&#39;</span>
<span class="nv">equals: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">exclusive</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="s1">&#39;=&#39;</span>
<span class="nv">intro: </span> <span class="s2">&quot;($@from_var &lt;= $@to_var ? $idx&quot;</span>
<span class="nv">compare: </span> <span class="s2">&quot;$intro &lt;$equals $@to_var : $idx &gt;$equals $@to_var)&quot;</span>
<span class="nv">incr: </span> <span class="s2">&quot;$intro += $step : $idx -= $step)&quot;</span>
<span class="s2">&quot;$vars; $compare; $incr&quot;</span></pre></div> </td> </tr> <tr id="section-64"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-64">#</a> </div> <p>When used as a value, expand the range into the equivalent array. In the
future, the code this generates should probably be cleaned up by handwriting
it instead of wrapping nodes.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_array: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">name: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">body: </span><span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">literal</span><span class="p">(</span><span class="nx">name</span><span class="p">)])</span>
<span class="nv">arr: </span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">ForNode</span><span class="p">(</span><span class="nx">body</span><span class="p">,</span> <span class="p">{</span><span class="nv">source: </span><span class="p">(</span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="k">this</span><span class="p">))},</span> <span class="nx">literal</span><span class="p">(</span><span class="nx">name</span><span class="p">))])</span>
<span class="p">(</span><span class="k">new</span> <span class="nx">ParentheticalNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([],</span> <span class="nx">arr</span><span class="p">.</span><span class="nx">make_return</span><span class="p">())))).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-65"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-65">#</a> </div> <h3>SliceNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-66"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-66">#</a> </div> <p>An array slice literal. Unlike JavaScript's <code>Array#slice</code>, the second parameter
specifies the index of the end of the slice, just as the first parameter
is the index of the beginning.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.SliceNode: </span><span class="nx">class</span> <span class="nx">SliceNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Slice&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">range</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">range: </span><span class="nx">range</span><span class="p">]</span>
<span class="k">this</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">from: </span> <span class="err">@</span><span class="nx">range</span><span class="p">.</span><span class="nx">from</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">to: </span> <span class="err">@</span><span class="nx">range</span><span class="p">.</span><span class="nx">to</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">plus_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">range</span><span class="p">.</span><span class="nx">exclusive</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="s1">&#39; + 1&#39;</span>
<span class="s2">&quot;.slice($from, $to$plus_part)&quot;</span></pre></div> </td> </tr> <tr id="section-67"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-67">#</a> </div> <h3>ObjectNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-68"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-68">#</a> </div> <p>An object literal, nothing fancy.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ObjectNode: </span><span class="nx">class</span> <span class="nx">ObjectNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Object&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">props</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="err">@</span><span class="nv">objects: </span><span class="err">@</span><span class="nv">properties: </span><span class="nx">props</span> <span class="o">or</span> <span class="p">[]</span></pre></div> </td> </tr> <tr id="section-69"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-69">#</a> </div> <p>All the mucking about with commas is to make sure that CommentNodes and
AssignNodes get interleaved correctly, with no trailing commas or
commas affixed to comments.</p>
<p><em>TODO: Extract this and add it to ArrayNode</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o.indent: </span><span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="nv">non_comments: </span><span class="nx">prop</span> <span class="k">for</span> <span class="nx">prop</span> <span class="k">in</span> <span class="err">@</span><span class="nx">properties</span> <span class="k">when</span> <span class="o">not</span> <span class="p">(</span><span class="nx">prop</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span><span class="p">)</span>
<span class="nv">last_noncom: </span> <span class="nx">non_comments</span><span class="p">[</span><span class="nx">non_comments</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span>
<span class="nv">props: </span><span class="k">for</span> <span class="nx">prop</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">properties</span>
<span class="nv">join: </span> <span class="s2">&quot;,\n&quot;</span>
<span class="nv">join: </span> <span class="s2">&quot;\n&quot;</span> <span class="k">if</span> <span class="p">(</span><span class="nx">prop</span> <span class="o">is</span> <span class="nx">last_noncom</span><span class="p">)</span> <span class="o">or</span> <span class="p">(</span><span class="nx">prop</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span><span class="p">)</span>
<span class="nv">join: </span> <span class="s1">&#39;&#39;</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nv">indent: </span><span class="k">if</span> <span class="nx">prop</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="nx">indent</span> <span class="o">+</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="nx">join</span>
<span class="nv">props: </span><span class="nx">props</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="nv">inner: </span><span class="k">if</span> <span class="nx">props</span> <span class="k">then</span> <span class="s1">&#39;\n&#39;</span> <span class="o">+</span> <span class="nx">props</span> <span class="o">+</span> <span class="s1">&#39;\n&#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="s2">&quot;{$inner}&quot;</span></pre></div> </td> </tr> <tr id="section-70"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-70">#</a> </div> <h3>ArrayNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-71"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-71">#</a> </div> <p>An array literal.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ArrayNode: </span><span class="nx">class</span> <span class="nx">ArrayNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Array&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">objects</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="err">@</span><span class="nv">objects: </span><span class="nx">objects</span> <span class="o">or</span> <span class="p">[]</span>
<span class="err">@</span><span class="nv">compile_splat_literal: </span><span class="nx">SplatNode</span><span class="p">.</span><span class="nx">compile_mixed_array</span> <span class="o">&lt;-</span> <span class="err">@</span><span class="p">,</span> <span class="err">@</span><span class="nx">objects</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o.indent: </span><span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="nv">objects: </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">objects</span>
<span class="nv">code: </span><span class="nx">obj</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="k">if</span> <span class="nx">obj</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_splat_literal</span><span class="p">(</span><span class="err">@</span><span class="nx">objects</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">obj</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span>
<span class="nx">objects</span><span class="p">.</span><span class="nx">push</span> <span class="s2">&quot;\n$code\n$o.indent&quot;</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="err">@</span><span class="nx">objects</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nx">objects</span><span class="p">.</span><span class="nx">push</span> <span class="nx">code</span>
<span class="k">else</span>
<span class="nx">objects</span><span class="p">.</span><span class="nx">push</span> <span class="s2">&quot;$code, &quot;</span>
<span class="nv">objects: </span><span class="nx">objects</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="nv">ending: </span><span class="k">if</span> <span class="nx">objects</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="s1">&#39;\n&#39;</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span> <span class="k">then</span> <span class="s2">&quot;\n$@tab]&quot;</span> <span class="k">else</span> <span class="s1">&#39;]&#39;</span>
<span class="s2">&quot;[$objects$ending&quot;</span></pre></div> </td> </tr> <tr id="section-72"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-72">#</a> </div> <h3>ClassNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-73"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-73">#</a> </div> <p>The CoffeeScript class definition.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ClassNode: </span><span class="nx">class</span> <span class="nx">ClassNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Class&#39;</span></pre></div> </td> </tr> <tr id="section-74"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-74">#</a> </div> <p>Initialize a <strong>ClassNode</strong> with its name, an optional superclass, and a
list of prototype property assignments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">constructor: </span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">parent</span><span class="p">,</span> <span class="nx">props</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nv">variable: </span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nv">parent: </span><span class="nx">parent</span><span class="p">,</span> <span class="err">@</span><span class="nv">properties: </span><span class="nx">props</span> <span class="o">or</span> <span class="p">[]]</span>
<span class="err">@</span><span class="nv">returns: </span> <span class="kc">false</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">returns: </span><span class="kc">true</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-75"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-75">#</a> </div> <p>Instead of generating the JavaScript string directly, we build up the
equivalent syntax tree and compile that, in pieces. You can see the
constructor, property assignments, and inheritance getting built out below.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">extension: </span> <span class="err">@</span><span class="nx">parent</span> <span class="o">and</span> <span class="k">new</span> <span class="nx">ExtendsNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nx">parent</span><span class="p">)</span>
<span class="nv">constructor: </span><span class="kc">null</span>
<span class="nv">props: </span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
<span class="nv">o.top: </span> <span class="kc">true</span>
<span class="k">for</span> <span class="nx">prop</span> <span class="k">in</span> <span class="err">@</span><span class="nx">properties</span>
<span class="k">if</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span> <span class="o">and</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">.</span><span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;constructor&#39;</span>
<span class="nv">func: </span><span class="nx">prop</span><span class="p">.</span><span class="nx">value</span>
<span class="nx">func</span><span class="p">.</span><span class="nx">body</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="k">new</span> <span class="nx">ReturnNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">)))</span>
<span class="nv">constructor: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span>
<span class="k">else</span>
<span class="k">if</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span>
<span class="nv">val: </span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span><span class="p">,</span> <span class="s1">&#39;prototype&#39;</span><span class="p">)])</span>
<span class="nv">prop: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="nx">val</span><span class="p">,</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">value</span><span class="p">)</span>
<span class="nx">props</span><span class="p">.</span><span class="nx">push</span> <span class="nx">prop</span>
<span class="k">if</span> <span class="o">not</span> <span class="nx">constructor</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">parent</span>
<span class="nv">applied: </span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="err">@</span><span class="nx">parent</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;apply&#39;</span><span class="p">))])</span>
<span class="nv">constructor: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([],</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">([</span>
<span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="nx">applied</span><span class="p">,</span> <span class="p">[</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">),</span> <span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;arguments&#39;</span><span class="p">)])</span>
<span class="p">])))</span>
<span class="k">else</span>
<span class="nv">constructor: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="k">new</span> <span class="nx">CodeNode</span><span class="p">())</span>
<span class="nv">construct: </span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="o">+</span> <span class="nx">constructor</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39;;\n&#39;</span>
<span class="nv">props: </span> <span class="k">if</span> <span class="nx">props</span><span class="p">.</span><span class="nx">empty</span><span class="p">()</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="nx">props</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39;\n&#39;</span>
<span class="nv">extension: </span><span class="k">if</span> <span class="nx">extension</span> <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="o">+</span> <span class="nx">extension</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39;;\n&#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">returns: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">returns</span> <span class="k">then</span> <span class="k">new</span> <span class="nx">ReturnNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="s2">&quot;$construct$extension$props$returns&quot;</span>
<span class="nx">statement</span> <span class="nx">ClassNode</span></pre></div> </td> </tr> <tr id="section-76"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-76">#</a> </div> <h3>AssignNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-77"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-77">#</a> </div> <p>The <strong>AssignNode</strong> is used to assign a local variable to value, or to set the
property of an object -- including within object literals.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.AssignNode: </span><span class="nx">class</span> <span class="nx">AssignNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Assign&#39;</span></pre></div> </td> </tr> <tr id="section-78"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-78">#</a> </div> <p>Matchers for detecting prototype assignments.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">PROTO_ASSIGN: </span><span class="sr">/^(\S+)\.prototype/</span>
<span class="nv">LEADING_DOT: </span> <span class="sr">/^\.(prototype\.)?/</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">variable: </span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nv">value: </span><span class="nx">value</span><span class="p">]</span>
<span class="err">@</span><span class="nv">context: </span><span class="nx">context</span>
<span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
<span class="kc">true</span>
<span class="nv">is_value: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">variable</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="k">new</span> <span class="nx">Expressions</span> <span class="p">[</span><span class="k">this</span><span class="p">,</span> <span class="k">new</span> <span class="nx">ReturnNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">)]</span>
<span class="nv">is_statement: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="o">and</span> <span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_array</span><span class="p">()</span> <span class="o">or</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_object</span><span class="p">())</span></pre></div> </td> </tr> <tr id="section-79"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-79">#</a> </div> <p>Compile an assignment, delegating to <code>compile_pattern_match</code> or
<code>compile_splice</code> if appropriate. Keep track of the name of the base object
we've been assigned to, for correct internal references. If the variable
has not been seen yet within the current scope, declare it.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">top: </span> <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_pattern_match</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_splice</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_splice</span><span class="p">()</span>
<span class="nv">stmt: </span> <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;as_statement&#39;</span>
<span class="nv">name: </span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">last: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">last</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="err">@</span><span class="nx">LEADING_DOT</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">else</span> <span class="nx">name</span>
<span class="nv">match: </span> <span class="nx">name</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="err">@</span><span class="nx">PROTO_ASSIGN</span><span class="p">)</span>
<span class="nv">proto: </span> <span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">value</span> <span class="k">instanceof</span> <span class="nx">CodeNode</span>
<span class="err">@</span><span class="nv">value.name: </span> <span class="nx">last</span> <span class="k">if</span> <span class="nx">last</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">IDENTIFIER</span><span class="p">)</span>
<span class="err">@</span><span class="nv">value.proto: </span><span class="nx">proto</span> <span class="k">if</span> <span class="nx">proto</span>
<span class="nv">val: </span><span class="err">@</span><span class="nx">value</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="k">return</span> <span class="s2">&quot;$name: $val&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">context</span> <span class="o">is</span> <span class="s1">&#39;object&#39;</span>
<span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">name</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">has_properties</span><span class="p">()</span>
<span class="nv">val: </span><span class="s2">&quot;$name = $val&quot;</span>
<span class="k">return</span> <span class="s2">&quot;$@tab$val;&quot;</span> <span class="k">if</span> <span class="nx">stmt</span>
<span class="k">if</span> <span class="nx">top</span> <span class="k">then</span> <span class="nx">val</span> <span class="k">else</span> <span class="s2">&quot;($val)&quot;</span></pre></div> </td> </tr> <tr id="section-80"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-80">#</a> </div> <p>Brief implementation of recursive pattern matching, when assigning array or
object literals to a value. Peeks at their properties to assign inner names.
See the <a href="http://wiki.ecmascript.org/doku.php?id=harmony:destructuring">ECMAScript Harmony Wiki</a>
for details.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_pattern_match: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">val_var: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">value: </span><span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="nx">ClosureNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="err">@</span><span class="nx">value</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">value</span>
<span class="nv">assigns: </span><span class="p">[</span><span class="s2">&quot;$@tab$val_var = ${ value.compile(o) };&quot;</span><span class="p">]</span>
<span class="nv">o.top: </span><span class="kc">true</span>
<span class="nv">o.as_statement: </span><span class="kc">true</span>
<span class="nv">splat: </span><span class="kc">false</span>
<span class="k">for</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">.</span><span class="nx">objects</span>
<span class="nv">idx: </span><span class="nx">i</span>
<span class="p">[</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">idx</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">obj</span><span class="p">.</span><span class="nx">value</span><span class="p">,</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">]</span> <span class="k">if</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_object</span><span class="p">()</span>
<span class="nv">access_class: </span><span class="k">if</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_array</span><span class="p">()</span> <span class="k">then</span> <span class="nx">IndexNode</span> <span class="k">else</span> <span class="nx">AccessorNode</span>
<span class="k">if</span> <span class="nx">obj</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">splat</span>
<span class="nv">val: </span><span class="nx">literal</span><span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">compile_value</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">val_var</span><span class="p">,</span>
<span class="p">(</span><span class="nv">oindex: </span><span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">.</span><span class="nx">objects</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">obj</span><span class="p">)),</span>
<span class="p">(</span><span class="nv">olength: </span><span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">.</span><span class="nx">objects</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="o">-</span> <span class="nx">oindex</span> <span class="o">-</span> <span class="mi">1</span><span class="p">))</span>
<span class="nv">splat: </span><span class="kc">true</span>
<span class="k">else</span>
<span class="nv">idx: </span><span class="nx">literal</span><span class="p">(</span><span class="k">if</span> <span class="nx">splat</span> <span class="k">then</span> <span class="s2">&quot;${val_var}.length - ${olength - idx}&quot;</span> <span class="k">else</span> <span class="nx">idx</span><span class="p">)</span> <span class="k">if</span> <span class="k">typeof</span> <span class="nx">idx</span> <span class="o">isnt</span> <span class="s1">&#39;object&#39;</span>
<span class="nv">val: </span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="nx">val_var</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">access_class</span><span class="p">(</span><span class="nx">idx</span><span class="p">)])</span>
<span class="nx">assigns</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">val</span><span class="p">).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span>
<span class="nv">code: </span><span class="nx">assigns</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s2">&quot;\n&quot;</span><span class="p">)</span>
<span class="nx">code</span></pre></div> </td> </tr> <tr id="section-81"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-81">#</a> </div> <p>Compile the assignment from an array splice literal, using JavaScript's
<code>Array#splice</code> method.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_splice: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">name: </span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">only_first: </span><span class="kc">true</span><span class="p">}))</span>
<span class="nv">l: </span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">range: </span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">properties</span><span class="p">[</span><span class="nx">l</span> <span class="o">-</span> <span class="mi">1</span><span class="p">].</span><span class="nx">range</span>
<span class="nv">plus: </span> <span class="k">if</span> <span class="nx">range</span><span class="p">.</span><span class="nx">exclusive</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="s1">&#39; + 1&#39;</span>
<span class="nv">from: </span> <span class="nx">range</span><span class="p">.</span><span class="nx">from</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">to: </span> <span class="nx">range</span><span class="p">.</span><span class="nx">to</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39; - &#39;</span> <span class="o">+</span> <span class="nx">from</span> <span class="o">+</span> <span class="nx">plus</span>
<span class="nv">val: </span> <span class="err">@</span><span class="nx">value</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="s2">&quot;${name}.splice.apply($name, [$from, $to].concat($val))&quot;</span></pre></div> </td> </tr> <tr id="section-82"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-82">#</a> </div> <h3>CodeNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-83"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-83">#</a> </div> <p>A function definition. This is the only node that creates a new Scope.
When for the purposes of walking the contents of a function body, the CodeNode
has no <em>children</em> -- they're within the inner scope.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.CodeNode: </span><span class="nx">class</span> <span class="nx">CodeNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Code&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">params</span><span class="p">,</span> <span class="nx">body</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">params: </span> <span class="nx">params</span> <span class="o">or</span> <span class="p">[]</span>
<span class="err">@</span><span class="nv">body: </span> <span class="nx">body</span> <span class="o">or</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
<span class="err">@</span><span class="nv">bound: </span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;boundfunc&#39;</span></pre></div> </td> </tr> <tr id="section-84"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-84">#</a> </div> <p>Compilation creates a new scope unless explicitly asked to share with the
outer scope. Handles splat parameters in the parameter list by peeking at
the JavaScript <code>arguments</code> objects. If the function is bound with the <code>=&gt;</code>
arrow, generates a wrapper that saves the current value of <code>this</code> through
a closure.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">shared_scope: </span><span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;shared_scope&#39;</span>
<span class="nv">top: </span> <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span>
<span class="nv">o.scope: </span> <span class="nx">shared_scope</span> <span class="o">or</span> <span class="k">new</span> <span class="nx">Scope</span><span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">,</span> <span class="k">this</span><span class="p">)</span>
<span class="nv">o.top: </span> <span class="kc">true</span>
<span class="nv">o.indent: </span> <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="k">if</span> <span class="err">@</span><span class="nx">bound</span> <span class="k">then</span> <span class="mi">2</span> <span class="k">else</span> <span class="mi">1</span><span class="p">)</span>
<span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;no_wrap&#39;</span>
<span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;globals&#39;</span>
<span class="nv">i: </span><span class="mi">0</span>
<span class="nv">splat: </span><span class="kc">undefined</span>
<span class="nv">params: </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">param</span> <span class="k">in</span> <span class="err">@</span><span class="nx">params</span>
<span class="k">if</span> <span class="nx">param</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">splat</span><span class="o">?</span>
<span class="nv">splat: </span><span class="nx">param</span>
<span class="nv">splat.index: </span><span class="nx">i</span>
<span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">unshift</span><span class="p">(</span><span class="nx">splat</span><span class="p">)</span>
<span class="nv">splat.trailings: </span><span class="p">[]</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">splat</span><span class="o">?</span>
<span class="nx">splat</span><span class="p">.</span><span class="nx">trailings</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">param</span><span class="p">)</span>
<span class="k">else</span>
<span class="nx">params</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">param</span><span class="p">)</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="nv">params: </span><span class="p">(</span><span class="nx">param</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">for</span> <span class="nx">param</span> <span class="k">in</span> <span class="nx">params</span><span class="p">)</span>
<span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span>
<span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">parameter</span><span class="p">(</span><span class="nx">param</span><span class="p">))</span> <span class="k">for</span> <span class="nx">param</span> <span class="k">in</span> <span class="nx">params</span>
<span class="nv">code: </span><span class="k">if</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span> <span class="k">then</span> <span class="s2">&quot;\n${ @body.compile_with_declarations(o) }\n&quot;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">name_part: </span><span class="k">if</span> <span class="err">@</span><span class="nx">name</span> <span class="k">then</span> <span class="s1">&#39; &#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">name</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">func: </span><span class="s2">&quot;function${ if @bound then &#39;&#39; else name_part }(${ params.join(&#39;, &#39;) }) {$code${@idt(if @bound then 1 else 0)}}&quot;</span>
<span class="nv">func: </span><span class="s2">&quot;($func)&quot;</span> <span class="k">if</span> <span class="nx">top</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">bound</span>
<span class="k">return</span> <span class="nx">func</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">bound</span>
<span class="nv">inner: </span><span class="s2">&quot;(function$name_part() {\n${@idt(2)}return __func.apply(__this, arguments);\n${@idt(1)}});&quot;</span>
<span class="s2">&quot;(function(__this) {\n${@idt(1)}var __func = $func;\n${@idt(1)}return $inner\n$@tab})(this)&quot;</span>
<span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-85"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-85">#</a> </div> <p>When traversing (for printing or inspecting), return the real children of
the function -- the parameters and body of expressions.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">real_children: </span><span class="o">-&gt;</span>
<span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nx">params</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">expressions</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-86"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-86">#</a> </div> <p>Custom <code>traverse</code> implementation that uses the <code>real_children</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">traverse: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">block</span> <span class="k">this</span>
<span class="nx">child</span><span class="p">.</span><span class="nx">traverse</span> <span class="nx">block</span> <span class="k">for</span> <span class="nx">child</span> <span class="k">in</span> <span class="err">@</span><span class="nx">real_children</span><span class="p">()</span>
<span class="nv">toString: </span><span class="p">(</span><span class="nx">idt</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">idt: </span><span class="o">or</span> <span class="s1">&#39;&#39;</span>
<span class="nv">children: </span><span class="p">(</span><span class="nx">child</span><span class="p">.</span><span class="nx">toString</span><span class="p">(</span><span class="nx">idt</span> <span class="o">+</span> <span class="nx">TAB</span><span class="p">)</span> <span class="k">for</span> <span class="nx">child</span> <span class="k">in</span> <span class="err">@</span><span class="nx">real_children</span><span class="p">()).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="s2">&quot;\n$idt$children&quot;</span></pre></div> </td> </tr> <tr id="section-87"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-87">#</a> </div> <h3>SplatNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-88"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-88">#</a> </div> <p>A splat, either as a parameter to a function, an argument to a call,
or as part of a destructuring assignment.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.SplatNode: </span><span class="nx">class</span> <span class="nx">SplatNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Splat&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">name: </span><span class="nx">literal</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">name</span><span class="p">.</span><span class="nx">compile</span>
<span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">name: </span><span class="nx">name</span><span class="p">]</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">index</span><span class="o">?</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_param</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">name</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-89"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-89">#</a> </div> <p>Compiling a parameter splat means recovering the parameters that succeed
the splat in the parameter list, by slicing the arguments object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_param: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">name: </span><span class="err">@</span><span class="nx">name</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">name</span>
<span class="nv">i: </span><span class="mi">0</span>
<span class="k">for</span> <span class="nx">trailing</span> <span class="k">in</span> <span class="err">@</span><span class="nx">trailings</span>
<span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">assign</span><span class="p">(</span><span class="nx">trailing</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="s2">&quot;arguments[arguments.length - $@trailings.length + $i]&quot;</span><span class="p">)</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="s2">&quot;$name = Array.prototype.slice.call(arguments, $@index, arguments.length - ${@trailings.length})&quot;</span></pre></div> </td> </tr> <tr id="section-90"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-90">#</a> </div> <p>A compiling a splat as a destructuring assignment means slicing arguments
from the right-hand-side's corresponding array.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_value: </span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">trailings</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">if</span> <span class="nx">trailings</span><span class="o">?</span> <span class="k">then</span> <span class="s2">&quot;Array.prototype.slice.call($name, $index, ${name}.length - $trailings)&quot;</span> <span class="o">\</span>
<span class="k">else</span> <span class="s2">&quot;Array.prototype.slice.call($name, $index)&quot;</span></pre></div> </td> </tr> <tr id="section-91"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-91">#</a> </div> <p>Utility function that converts arbitrary number of elements, mixed with
splats, to a proper array</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">SplatNode.compile_mixed_array: </span><span class="p">(</span><span class="nx">list</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">args: </span><span class="p">[]</span>
<span class="nv">i: </span><span class="mi">0</span>
<span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="nx">list</span>
<span class="nv">code: </span><span class="nx">arg</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="k">if</span> <span class="o">not</span> <span class="p">(</span><span class="nx">arg</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span><span class="p">)</span>
<span class="nv">prev: </span><span class="nx">args</span><span class="p">[</span><span class="nx">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span>
<span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="mi">1</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;[&#39;</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="nx">prev</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;]&#39;</span>
<span class="nx">args</span><span class="p">[</span><span class="nx">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="s2">&quot;${prev.substr(0, prev.length - 1)}, $code]&quot;</span>
<span class="k">continue</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">&gt;</span> <span class="mi">1</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">9</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;.concat([&#39;</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="nx">prev</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;])&#39;</span>
<span class="nx">args</span><span class="p">[</span><span class="nx">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="s2">&quot;${prev.substr(0, prev.length - 2)}, $code])&quot;</span>
<span class="k">continue</span>
<span class="k">else</span>
<span class="nv">code: </span><span class="s2">&quot;[$code]&quot;</span>
<span class="nx">args</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="mi">0</span> <span class="k">then</span> <span class="nx">code</span> <span class="k">else</span> <span class="s2">&quot;.concat($code)&quot;</span><span class="p">)</span>
<span class="nv">i: </span><span class="o">+</span> <span class="mi">1</span>
<span class="nx">args</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-92"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-92">#</a> </div> <h3>WhileNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-93"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-93">#</a> </div> <p>A while loop, the only sort of low-level loop exposed by CoffeeScript. From
it, all other loops can be manufactured. Useful in cases where you need more
flexibility or more speed than a comprehension can provide.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.WhileNode: </span><span class="nx">class</span> <span class="nx">WhileNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;While&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">condition</span><span class="p">,</span> <span class="nx">opts</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">children</span><span class="o">:</span><span class="p">[</span><span class="err">@</span><span class="nv">condition: </span><span class="nx">condition</span><span class="p">]</span>
<span class="err">@</span><span class="nv">filter: </span><span class="nx">opts</span> <span class="o">and</span> <span class="nx">opts</span><span class="p">.</span><span class="nx">filter</span>
<span class="nv">add_body: </span><span class="p">(</span><span class="nx">body</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">push</span> <span class="err">@</span><span class="nv">body: </span><span class="nx">body</span>
<span class="k">this</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">returns: </span><span class="kc">true</span>
<span class="k">this</span>
<span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-94"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-94">#</a> </div> <p>The main difference from a JavaScript <em>while</em> is that the CoffeeScript
<em>while</em> can be used as a part of a larger expression -- while loops may
return an array containing the computed result of each iteration.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">top: </span> <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">returns</span>
<span class="nv">o.indent: </span> <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="nv">o.top: </span> <span class="kc">true</span>
<span class="nv">cond: </span> <span class="err">@</span><span class="nx">condition</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">set: </span> <span class="s1">&#39;&#39;</span>
<span class="k">if</span> <span class="o">not</span> <span class="nx">top</span>
<span class="nv">rvar: </span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">set: </span> <span class="s2">&quot;$@tab$rvar = [];\n&quot;</span>
<span class="err">@</span><span class="nv">body: </span> <span class="nx">PushNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="nx">rvar</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">body</span>
<span class="nv">pre: </span> <span class="s2">&quot;$set${@tab}while ($cond)&quot;</span>
<span class="k">return</span> <span class="s2">&quot;$pre null;$post&quot;</span> <span class="k">if</span> <span class="o">not</span> <span class="err">@</span><span class="nx">body</span>
<span class="err">@</span><span class="nv">body: </span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="err">@</span><span class="nx">filter</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">)])</span> <span class="k">if</span> <span class="err">@</span><span class="nx">filter</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">returns</span>
<span class="nv">post: </span><span class="k">new</span> <span class="nx">ReturnNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="nx">rvar</span><span class="p">)).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">indent: </span><span class="err">@</span><span class="nx">idt</span><span class="p">()}))</span>
<span class="k">else</span>
<span class="nv">post: </span><span class="s1">&#39;&#39;</span>
<span class="s2">&quot;$pre {\n${ @body.compile(o) }\n$@tab}\n$post&quot;</span>
<span class="nx">statement</span> <span class="nx">WhileNode</span></pre></div> </td> </tr> <tr id="section-95"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-95">#</a> </div> <h3>OpNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-96"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-96">#</a> </div> <p>Simple Arithmetic and logical operations. Performs some conversion from
CoffeeScript operations into their JavaScript equivalents.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.OpNode: </span><span class="nx">class</span> <span class="nx">OpNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Op&#39;</span></pre></div> </td> </tr> <tr id="section-97"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-97">#</a> </div> <p>The map of conversions from CoffeeScript to JavaScript symbols.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">CONVERSIONS: </span><span class="p">{</span>
<span class="s1">&#39;==&#39;</span><span class="o">:</span> <span class="s1">&#39;===&#39;</span>
<span class="s1">&#39;!=&#39;</span><span class="o">:</span> <span class="s1">&#39;!==&#39;</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-98"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-98">#</a> </div> <p>The list of operators for which we perform
<a href="http://docs.python.org/reference/expressions.html#notin">Python-style comparison chaining</a>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">CHAINABLE: </span> <span class="p">[</span><span class="s1">&#39;&lt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;=&#39;</span><span class="p">,</span> <span class="s1">&#39;&lt;=&#39;</span><span class="p">,</span> <span class="s1">&#39;===&#39;</span><span class="p">,</span> <span class="s1">&#39;!==&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-99"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-99">#</a> </div> <p>Our assignment operators that have no JavaScript equivalent.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">ASSIGNMENT: </span> <span class="p">[</span><span class="s1">&#39;||=&#39;</span><span class="p">,</span> <span class="s1">&#39;&amp;&amp;=&#39;</span><span class="p">,</span> <span class="s1">&#39;?=&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-100"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-100">#</a> </div> <p>Operators must come before their operands with a space.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">PREFIX_OPERATORS: </span><span class="p">[</span><span class="s1">&#39;typeof&#39;</span><span class="p">,</span> <span class="s1">&#39;delete&#39;</span><span class="p">]</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">operator</span><span class="p">,</span> <span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">,</span> <span class="nx">flip</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">type: </span><span class="o">+</span> <span class="s1">&#39; &#39;</span> <span class="o">+</span> <span class="nx">operator</span>
<span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="p">[</span><span class="err">@</span><span class="nv">first: </span><span class="nx">first</span><span class="p">,</span> <span class="err">@</span><span class="nv">second: </span><span class="nx">second</span><span class="p">]</span>
<span class="err">@</span><span class="nv">operator: </span><span class="err">@</span><span class="nx">CONVERSIONS</span><span class="p">[</span><span class="nx">operator</span><span class="p">]</span> <span class="o">or</span> <span class="nx">operator</span>
<span class="err">@</span><span class="nv">flip: </span><span class="o">!!</span><span class="nx">flip</span>
<span class="nv">is_unary: </span><span class="o">-&gt;</span>
<span class="o">not</span> <span class="err">@</span><span class="nx">second</span>
<span class="nv">is_chainable: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">CHAINABLE</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="err">@</span><span class="nx">operator</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o.operation: </span><span class="kc">true</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_chain</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_chainable</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span> <span class="k">instanceof</span> <span class="nx">OpNode</span> <span class="o">and</span> <span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">().</span><span class="nx">is_chainable</span><span class="p">()</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_assignment</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">ASSIGNMENT</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="err">@</span><span class="nx">operator</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_unary</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_unary</span><span class="p">()</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">compile_existence</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">operator</span> <span class="o">is</span> <span class="s1">&#39;?&#39;</span>
<span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">operator</span><span class="p">,</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)].</span><span class="nx">join</span> <span class="s1">&#39; &#39;</span></pre></div> </td> </tr> <tr id="section-101"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-101">#</a> </div> <p>Mimic Python's chained comparisons when multiple comparison operators are
used sequentially. For example:</p>
<pre><code>bin/coffee -e "puts 50 &lt; 65 &gt; 10"
true
</code></pre> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_chain: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">shared: </span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">().</span><span class="nx">second</span>
<span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">second</span><span class="p">,</span> <span class="nx">shared</span><span class="p">]</span><span class="o">:</span> <span class="nx">shared</span><span class="p">.</span><span class="nx">compile_reference</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="nx">shared</span> <span class="k">instanceof</span> <span class="nx">CallNode</span>
<span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">,</span> <span class="nx">shared</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="nx">shared</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
<span class="s2">&quot;($first) &amp;&amp; ($shared $@operator $second)&quot;</span></pre></div> </td> </tr> <tr id="section-102"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-102">#</a> </div> <p>When compiling a conditional assignment, take care to ensure that the
operands are only evaluated once, even though we have to reference them
more than once.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_assignment: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
<span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">find</span><span class="p">(</span><span class="nx">first</span><span class="p">)</span> <span class="k">if</span> <span class="nx">first</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">IDENTIFIER</span><span class="p">)</span>
<span class="k">return</span> <span class="s2">&quot;$first = ${ ExistenceNode.compile_test(o, @first) } ? $first : $second&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">operator</span> <span class="o">is</span> <span class="s1">&#39;?=&#39;</span>
<span class="s2">&quot;$first = $first ${ @operator.substr(0, 2) } $second&quot;</span></pre></div> </td> </tr> <tr id="section-103"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-103">#</a> </div> <p>If this is an existence operator, we delegate to <code>ExistenceNode.compile_test</code>
to give us the safe references for the variables.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_existence: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
<span class="nv">test: </span><span class="nx">ExistenceNode</span><span class="p">.</span><span class="nx">compile_test</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="err">@</span><span class="nx">first</span><span class="p">)</span>
<span class="s2">&quot;$test ? $first : $second&quot;</span></pre></div> </td> </tr> <tr id="section-104"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-104">#</a> </div> <p>Compile a unary <strong>OpNode</strong>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_unary: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">space: </span><span class="k">if</span> <span class="err">@</span><span class="nx">PREFIX_OPERATORS</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="err">@</span><span class="nx">operator</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span> <span class="k">then</span> <span class="s1">&#39; &#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">parts: </span><span class="p">[</span><span class="err">@</span><span class="nx">operator</span><span class="p">,</span> <span class="nx">space</span><span class="p">,</span> <span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
<span class="nv">parts: </span><span class="nx">parts</span><span class="p">.</span><span class="nx">reverse</span><span class="p">()</span> <span class="k">if</span> <span class="err">@</span><span class="nx">flip</span>
<span class="nx">parts</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-105"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-105">#</a> </div> <h3>TryNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-106"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-106">#</a> </div> <p>A classic <em>try/catch/finally</em> block.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.TryNode: </span><span class="nx">class</span> <span class="nx">TryNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Try&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">attempt</span><span class="p">,</span> <span class="nx">error</span><span class="p">,</span> <span class="nx">recovery</span><span class="p">,</span> <span class="nx">ensure</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="p">[</span><span class="err">@</span><span class="nv">attempt: </span><span class="nx">attempt</span><span class="p">,</span> <span class="err">@</span><span class="nv">recovery: </span><span class="nx">recovery</span><span class="p">,</span> <span class="err">@</span><span class="nv">ensure: </span><span class="nx">ensure</span><span class="p">]</span>
<span class="err">@</span><span class="nv">error: </span><span class="nx">error</span>
<span class="k">this</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">attempt: </span><span class="err">@</span><span class="nx">attempt</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span> <span class="k">if</span> <span class="err">@</span><span class="nx">attempt</span>
<span class="err">@</span><span class="nv">recovery: </span><span class="err">@</span><span class="nx">recovery</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span> <span class="k">if</span> <span class="err">@</span><span class="nx">recovery</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-107"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-107">#</a> </div> <p>Compilation is more or less as you would expect -- the <em>finally</em> clause
is optional, the <em>catch</em> is not.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">o.indent: </span> <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="nv">o.top: </span> <span class="kc">true</span>
<span class="nv">attempt_part: </span><span class="err">@</span><span class="nx">attempt</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">error_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">error</span> <span class="k">then</span> <span class="s2">&quot; (${ @error.compile(o) }) &quot;</span> <span class="k">else</span> <span class="s1">&#39; &#39;</span>
<span class="nv">catch_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">recovery</span> <span class="k">then</span> <span class="s2">&quot; catch$error_part{\n${ @recovery.compile(o) }\n$@tab}&quot;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">finally_part: </span><span class="p">(</span><span class="err">@</span><span class="nx">ensure</span> <span class="o">or</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="s1">&#39; finally {\n&#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">ensure</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span> <span class="o">+</span> <span class="s2">&quot;\n$@tab}&quot;</span>
<span class="s2">&quot;${@tab}try {\n$attempt_part\n$@tab}$catch_part$finally_part&quot;</span>
<span class="nx">statement</span> <span class="nx">TryNode</span></pre></div> </td> </tr> <tr id="section-108"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-108">#</a> </div> <h3>ThrowNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-109"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-109">#</a> </div> <p>Simple node to throw an exception.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ThrowNode: </span><span class="nx">class</span> <span class="nx">ThrowNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Throw&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-110"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-110">#</a> </div> <p>A <strong>ThrowNode</strong> is already a return, of sorts...</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="k">return</span> <span class="k">this</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="s2">&quot;${@tab}throw ${@expression.compile(o)};&quot;</span>
<span class="nx">statement</span> <span class="nx">ThrowNode</span></pre></div> </td> </tr> <tr id="section-111"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-111">#</a> </div> <h3>ExistenceNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-112"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-112">#</a> </div> <p>Checks a variable for existence -- not <em>null</em> and not <em>undefined</em>. This is
similar to <code>.nil?</code> in Ruby, and avoids having to consult a JavaScript truth
table.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ExistenceNode: </span><span class="nx">class</span> <span class="nx">ExistenceNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Existence&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">ExistenceNode</span><span class="p">.</span><span class="nx">compile_test</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="err">@</span><span class="nx">expression</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-113"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-113">#</a> </div> <p>The meat of the <strong>ExistenceNode</strong> is in this static <code>compile_test</code> method
because other nodes like to check the existence of their variables as well.
Be careful not to double-evaluate anything.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">ExistenceNode.compile_test: </span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">variable</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">variable</span><span class="p">]</span>
<span class="k">if</span> <span class="nx">variable</span> <span class="k">instanceof</span> <span class="nx">CallNode</span> <span class="o">or</span> <span class="p">(</span><span class="nx">variable</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span> <span class="o">and</span> <span class="nx">variable</span><span class="p">.</span><span class="nx">has_properties</span><span class="p">())</span>
<span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="nx">variable</span><span class="p">.</span><span class="nx">compile_reference</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
<span class="s2">&quot;(typeof $first !== \&quot;undefined\&quot; &amp;&amp; $second !== null)&quot;</span></pre></div> </td> </tr> <tr id="section-114"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-114">#</a> </div> <h3>ParentheticalNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-115"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-115">#</a> </div> <p>An extra set of parentheses, specified explicitly in the source. At one time
we tried to clean up the results by detecting and removing redundant
parentheses, but no longer -- you can put in as many as you please.</p>
<p>Parentheses are a good way to force any statement to become an expression.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ParentheticalNode: </span><span class="nx">class</span> <span class="nx">ParentheticalNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;Paren&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span>
<span class="nv">is_statement: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">code: </span><span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="k">return</span> <span class="nx">code</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span>
<span class="nv">l: </span> <span class="nx">code</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">code: </span><span class="nx">code</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">l</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span> <span class="k">if</span> <span class="nx">code</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="nx">l</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;;&#39;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">expression</span> <span class="k">instanceof</span> <span class="nx">AssignNode</span> <span class="k">then</span> <span class="nx">code</span> <span class="k">else</span> <span class="s2">&quot;($code)&quot;</span></pre></div> </td> </tr> <tr id="section-116"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-116">#</a> </div> <h3>ForNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-117"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-117">#</a> </div> <p>CoffeeScript's replacement for the <em>for</em> loop is our array and object
comprehensions, that compile into <em>for</em> loops here. They also act as an
expression, able to return the result of each filtered iteration.</p>
<p>Unlike Python array comprehensions, they can be multi-line, and you can pass
the current index of the loop as a second parameter. Unlike Ruby blocks,
you can map and filter in a single pass.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.ForNode: </span><span class="nx">class</span> <span class="nx">ForNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;For&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">body</span><span class="p">,</span> <span class="nx">source</span><span class="p">,</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">body: </span> <span class="nx">body</span>
<span class="err">@</span><span class="nv">name: </span> <span class="nx">name</span>
<span class="err">@</span><span class="nv">index: </span> <span class="nx">index</span> <span class="o">or</span> <span class="kc">null</span>
<span class="err">@</span><span class="nv">source: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">source</span>
<span class="err">@</span><span class="nv">filter: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">filter</span>
<span class="err">@</span><span class="nv">step: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">step</span>
<span class="err">@</span><span class="nv">object: </span> <span class="o">!!</span><span class="nx">source</span><span class="p">.</span><span class="nx">object</span>
<span class="p">[</span><span class="err">@</span><span class="nx">name</span><span class="p">,</span> <span class="err">@</span><span class="nx">index</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">index</span><span class="p">,</span> <span class="err">@</span><span class="nx">name</span><span class="p">]</span> <span class="k">if</span> <span class="err">@</span><span class="nx">object</span>
<span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="p">[</span><span class="err">@</span><span class="nx">body</span><span class="p">,</span> <span class="err">@</span><span class="nx">source</span><span class="p">,</span> <span class="err">@</span><span class="nx">filter</span><span class="p">]</span>
<span class="err">@</span><span class="nv">returns: </span><span class="kc">false</span>
<span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
<span class="kc">true</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">returns: </span><span class="kc">true</span>
<span class="k">this</span>
<span class="nv">compile_return_value: </span><span class="p">(</span><span class="nx">val</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="k">new</span> <span class="nx">ReturnNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="nx">val</span><span class="p">)).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">returns</span>
<span class="nx">val</span> <span class="o">or</span> <span class="s1">&#39;&#39;</span></pre></div> </td> </tr> <tr id="section-118"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-118">#</a> </div> <p>Welcome to the hairiest method in all of CoffeeScript. Handles the inner
loop, filtering, stepping, and result saving for array, object, and range
comprehensions. Some of the generated code can be shared in common, and
some cannot.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">top_level: </span> <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">returns</span>
<span class="nv">range: </span> <span class="err">@</span><span class="nx">source</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span> <span class="o">and</span> <span class="err">@</span><span class="nx">source</span><span class="p">.</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">RangeNode</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">source</span><span class="p">.</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">source: </span> <span class="k">if</span> <span class="nx">range</span> <span class="k">then</span> <span class="err">@</span><span class="nx">source</span><span class="p">.</span><span class="nx">base</span> <span class="k">else</span> <span class="err">@</span><span class="nx">source</span>
<span class="nv">scope: </span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span>
<span class="nv">name: </span> <span class="err">@</span><span class="nx">name</span> <span class="o">and</span> <span class="err">@</span><span class="nx">name</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="nv">index: </span> <span class="err">@</span><span class="nx">index</span> <span class="o">and</span> <span class="err">@</span><span class="nx">index</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
<span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">name</span> <span class="k">if</span> <span class="nx">name</span>
<span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">index</span> <span class="k">if</span> <span class="nx">index</span>
<span class="nv">body_dent: </span> <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="nv">rvar: </span> <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">top_level</span>
<span class="nv">svar: </span> <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">ivar: </span> <span class="k">if</span> <span class="nx">range</span> <span class="k">then</span> <span class="nx">name</span> <span class="k">else</span> <span class="nx">index</span> <span class="o">or</span> <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">var_part: </span> <span class="s1">&#39;&#39;</span>
<span class="nv">body: </span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="err">@</span><span class="nx">body</span><span class="p">])</span>
<span class="k">if</span> <span class="nx">range</span>
<span class="nv">index_var: </span> <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">source_part: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">compile_variables</span> <span class="nx">o</span>
<span class="nv">for_part: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">merge</span> <span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">index: </span><span class="nx">ivar</span><span class="p">,</span> <span class="nv">step: </span><span class="err">@</span><span class="nx">step</span><span class="p">}</span>
<span class="nv">for_part: </span> <span class="s2">&quot;$index_var = 0, $for_part, $index_var++&quot;</span>
<span class="k">else</span>
<span class="nv">index_var: </span> <span class="kc">null</span>
<span class="nv">source_part: </span> <span class="s2">&quot;$svar = ${ @source.compile(o) };\n$@tab&quot;</span>
<span class="nv">var_part: </span> <span class="s2">&quot;$body_dent$name = $svar[$ivar];\n&quot;</span> <span class="k">if</span> <span class="nx">name</span>
<span class="k">if</span> <span class="o">not</span> <span class="err">@</span><span class="nx">object</span>
<span class="nv">lvar: </span> <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
<span class="nv">step_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">step</span> <span class="k">then</span> <span class="s2">&quot;$ivar += ${ @step.compile(o) }&quot;</span> <span class="k">else</span> <span class="s2">&quot;$ivar++&quot;</span>
<span class="nv">for_part: </span> <span class="s2">&quot;$ivar = 0, $lvar = ${svar}.length; $ivar &lt; $lvar; $step_part&quot;</span>
<span class="nv">set_result: </span> <span class="k">if</span> <span class="nx">rvar</span> <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="o">+</span> <span class="nx">rvar</span> <span class="o">+</span> <span class="s1">&#39; = []; &#39;</span> <span class="k">else</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span>
<span class="nv">return_result: </span> <span class="err">@</span><span class="nx">compile_return_value</span><span class="p">(</span><span class="nx">rvar</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span>
<span class="nv">body: </span> <span class="nx">ClosureNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="nx">body</span><span class="p">,</span> <span class="kc">true</span><span class="p">)</span> <span class="k">if</span> <span class="nx">top_level</span> <span class="o">and</span> <span class="nx">body</span><span class="p">.</span><span class="nx">contains</span> <span class="p">(</span><span class="nx">n</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">n</span> <span class="k">instanceof</span> <span class="nx">CodeNode</span>
<span class="nv">body: </span> <span class="nx">PushNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="nx">rvar</span><span class="p">,</span> <span class="nx">body</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">top_level</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">filter</span>
<span class="nv">body: </span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="err">@</span><span class="nx">filter</span><span class="p">,</span> <span class="nx">body</span><span class="p">)])</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">object</span>
<span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">assign</span><span class="p">(</span><span class="s1">&#39;__hasProp&#39;</span><span class="p">,</span> <span class="s1">&#39;Object.prototype.hasOwnProperty&#39;</span><span class="p">,</span> <span class="kc">true</span><span class="p">)</span>
<span class="nv">for_part: </span><span class="s2">&quot;$ivar in $svar) { if (__hasProp.call($svar, $ivar)&quot;</span>
<span class="nv">body: </span> <span class="nx">body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">indent: </span><span class="nx">body_dent</span><span class="p">,</span> <span class="nv">top: </span><span class="kc">true</span><span class="p">}))</span>
<span class="nv">vars: </span> <span class="k">if</span> <span class="nx">range</span> <span class="k">then</span> <span class="nx">name</span> <span class="k">else</span> <span class="s2">&quot;$name, $ivar&quot;</span>
<span class="nv">close: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">object</span> <span class="k">then</span> <span class="s1">&#39;}}\n&#39;</span> <span class="k">else</span> <span class="s1">&#39;}\n&#39;</span>
<span class="s2">&quot;$set_result${source_part}for ($for_part) {\n$var_part$body\n$@tab$close$return_result&quot;</span>
<span class="nx">statement</span> <span class="nx">ForNode</span></pre></div> </td> </tr> <tr id="section-119"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-119">#</a> </div> <h3>IfNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-120"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-120">#</a> </div> <p><em>If/else</em> statements. Our <em>switch/when</em> will be compiled into this. Acts as an
expression by pushing down requested returns to the last line of each clause.</p>
<p>Single-expression <strong>IfNodes</strong> are compiled into ternary operators if possible,
because ternaries are already proper expressions, and don't need conversion.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.IfNode: </span><span class="nx">class</span> <span class="nx">IfNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
<span class="nv">type: </span><span class="s1">&#39;If&#39;</span>
<span class="nv">constructor: </span><span class="p">(</span><span class="nx">condition</span><span class="p">,</span> <span class="nx">body</span><span class="p">,</span> <span class="nx">else_body</span><span class="p">,</span> <span class="nx">tags</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">condition: </span><span class="nx">condition</span>
<span class="err">@</span><span class="nv">body: </span> <span class="nx">body</span> <span class="o">and</span> <span class="nx">body</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
<span class="err">@</span><span class="nv">else_body: </span><span class="nx">else_body</span> <span class="o">and</span> <span class="nx">else_body</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
<span class="err">@</span><span class="nv">children: </span> <span class="nx">compact</span> <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nx">condition</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">,</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">]</span>
<span class="err">@</span><span class="nv">tags: </span> <span class="nx">tags</span> <span class="o">or</span> <span class="p">{}</span>
<span class="err">@</span><span class="nv">multiple: </span> <span class="kc">true</span> <span class="k">if</span> <span class="err">@</span><span class="nx">condition</span> <span class="k">instanceof</span> <span class="nb">Array</span>
<span class="err">@</span><span class="nv">condition: </span><span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="k">new</span> <span class="nx">ParentheticalNode</span><span class="p">(</span><span class="err">@</span><span class="nx">condition</span><span class="p">))</span> <span class="k">if</span> <span class="err">@</span><span class="nx">tags</span><span class="p">.</span><span class="nx">invert</span></pre></div> </td> </tr> <tr id="section-121"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-121">#</a> </div> <p>Add a new <em>else</em> clause to this <strong>IfNode</strong>, or push it down to the bottom
of the chain recursively.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">push: </span><span class="p">(</span><span class="nx">else_body</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">eb: </span><span class="nx">else_body</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">else_body</span> <span class="k">then</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">eb</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nv">else_body: </span><span class="nx">eb</span>
<span class="k">this</span>
<span class="nv">force_statement: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">tags.statement: </span><span class="kc">true</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-122"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-122">#</a> </div> <p>Tag a chain of <strong>IfNodes</strong> with their object(s) to switch on for equality
tests. <code>rewrite_switch</code> will perform the actual change at compile time.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">rewrite_condition: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">switcher: </span><span class="nx">expression</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-123"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-123">#</a> </div> <p>Rewrite a chain of <strong>IfNodes</strong> with their switch condition for equality.
Ensure that the switch expression isn't evaluated more than once.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">rewrite_switch: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">assigner: </span><span class="err">@</span><span class="nx">switcher</span>
<span class="k">if</span> <span class="o">not</span> <span class="p">(</span><span class="err">@</span><span class="nx">switcher</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span> <span class="k">instanceof</span> <span class="nx">LiteralNode</span><span class="p">)</span>
<span class="nv">variable: </span><span class="nx">literal</span><span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">())</span>
<span class="nv">assigner: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nx">switcher</span><span class="p">)</span>
<span class="err">@</span><span class="nv">switcher: </span><span class="nx">variable</span>
<span class="err">@</span><span class="nv">condition: </span><span class="k">if</span> <span class="err">@</span><span class="nx">multiple</span>
<span class="k">for</span> <span class="nx">cond</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">condition</span>
<span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;==&#39;</span><span class="p">,</span> <span class="p">(</span><span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="mi">0</span> <span class="k">then</span> <span class="nx">assigner</span> <span class="k">else</span> <span class="err">@</span><span class="nx">switcher</span><span class="p">),</span> <span class="nx">cond</span><span class="p">)</span>
<span class="k">else</span>
<span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;==&#39;</span><span class="p">,</span> <span class="nx">assigner</span><span class="p">,</span> <span class="err">@</span><span class="nx">condition</span><span class="p">)</span>
<span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">rewrite_condition</span><span class="p">(</span><span class="err">@</span><span class="nx">switcher</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_chain</span><span class="p">()</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-124"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-124">#</a> </div> <p>Rewrite a chain of <strong>IfNodes</strong> to add a default case as the final <em>else</em>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">add_else: </span><span class="p">(</span><span class="nx">exprs</span><span class="p">,</span> <span class="nx">statement</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">is_chain</span><span class="p">()</span>
<span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">add_else</span> <span class="nx">exprs</span><span class="p">,</span> <span class="nx">statement</span>
<span class="k">else</span>
<span class="nv">exprs: </span><span class="nx">exprs</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">statement</span>
<span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">push</span> <span class="err">@</span><span class="nv">else_body: </span><span class="nx">exprs</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-125"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-125">#</a> </div> <p>If the <code>else_body</code> is an <strong>IfNode</strong> itself, then we've got an <em>if-else</em> chain.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">is_chain: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">chain: </span><span class="o">or</span> <span class="err">@</span><span class="nx">else_body</span> <span class="o">and</span> <span class="err">@</span><span class="nx">else_body</span> <span class="k">instanceof</span> <span class="nx">IfNode</span></pre></div> </td> </tr> <tr id="section-126"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-126">#</a> </div> <p>The <strong>IfNode</strong> only compiles into a statement if either of its bodies needs
to be a statement. Otherwise a ternary is safe.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">is_statement: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">statement: </span><span class="o">or</span> <span class="o">!!</span><span class="p">(</span><span class="err">@</span><span class="nx">comment</span> <span class="o">or</span> <span class="err">@</span><span class="nx">tags</span><span class="p">.</span><span class="nx">statement</span> <span class="o">or</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span> <span class="o">or</span> <span class="p">(</span><span class="err">@</span><span class="nx">else_body</span> <span class="o">and</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()))</span>
<span class="nv">compile_condition: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="p">(</span><span class="nx">cond</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">for</span> <span class="nx">cond</span> <span class="k">in</span> <span class="nx">flatten</span><span class="p">([</span><span class="err">@</span><span class="nx">condition</span><span class="p">])).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39; || &#39;</span><span class="p">)</span>
<span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_statement</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_ternary</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">make_return: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">body: </span> <span class="o">and</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span>
<span class="err">@</span><span class="nv">else_body: </span><span class="o">and</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">make_return</span><span class="p">()</span>
<span class="k">this</span></pre></div> </td> </tr> <tr id="section-127"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-127">#</a> </div> <p>Compile the <strong>IfNode</strong> as a regular <em>if-else</em> statement. Flattened chains
force inner <em>else</em> bodies into statement form.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_statement: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">rewrite_switch</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">switcher</span>
<span class="nv">child: </span> <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;chain_child&#39;</span>
<span class="nv">cond_o: </span> <span class="nx">merge</span> <span class="nx">o</span>
<span class="nv">o.indent: </span> <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="nv">o.top: </span> <span class="kc">true</span>
<span class="nv">if_dent: </span> <span class="k">if</span> <span class="nx">child</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span>
<span class="nv">com_dent: </span> <span class="k">if</span> <span class="nx">child</span> <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">prefix: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">comment</span> <span class="k">then</span> <span class="s2">&quot;${ @comment.compile(cond_o) }\n$com_dent&quot;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">body: </span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="err">@</span><span class="nx">body</span><span class="p">]).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">if_part: </span> <span class="s2">&quot;$prefix${if_dent}if (${ @compile_condition(cond_o) }) {\n$body\n$@tab}&quot;</span>
<span class="k">return</span> <span class="nx">if_part</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">else_body</span>
<span class="nv">else_part: </span><span class="k">if</span> <span class="err">@</span><span class="nx">is_chain</span><span class="p">()</span>
<span class="s1">&#39; else &#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">indent: </span><span class="err">@</span><span class="nx">idt</span><span class="p">(),</span> <span class="nv">chain_child: </span><span class="kc">true</span><span class="p">}))</span>
<span class="k">else</span>
<span class="s2">&quot; else {\n${ Expressions.wrap([@else_body]).compile(o) }\n$@tab}&quot;</span>
<span class="s2">&quot;$if_part$else_part&quot;</span></pre></div> </td> </tr> <tr id="section-128"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-128">#</a> </div> <p>Compile the IfNode as a ternary operator.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compile_ternary: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">if_part: </span> <span class="err">@</span><span class="nx">condition</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39; ? &#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
<span class="nv">else_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">else_body</span> <span class="k">then</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;null&#39;</span>
<span class="s2">&quot;$if_part : $else_part&quot;</span></pre></div> </td> </tr> <tr id="section-129"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-129">#</a> </div> <h2>Faux-Nodes</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-130"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-130">#</a> </div> <h3>PushNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-131"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-131">#</a> </div> <p>Faux-nodes are never created by the grammar, but are used during code
generation to generate other combinations of nodes. The <strong>PushNode</strong> creates
the tree for <code>array.push(value)</code>, which is helpful for recording the result
arrays from comprehensions.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">PushNode: exports.PushNode: </span><span class="p">{</span>
<span class="nv">wrap: </span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">expressions</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">expr: </span><span class="nx">expressions</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
<span class="k">return</span> <span class="nx">expressions</span> <span class="k">if</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">is_pure_statement</span><span class="p">()</span> <span class="o">or</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">contains_pure_statement</span><span class="p">()</span>
<span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span>
<span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;push&#39;</span><span class="p">))]),</span> <span class="p">[</span><span class="nx">expr</span><span class="p">]</span>
<span class="p">)])</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-132"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-132">#</a> </div> <h3>ClosureNode</h3> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-133"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-133">#</a> </div> <p>A faux-node used to wrap an expressions body in a closure.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">ClosureNode: exports.ClosureNode: </span><span class="p">{</span></pre></div> </td> </tr> <tr id="section-134"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-134">#</a> </div> <p>Wrap the expressions body, unless it contains a pure statement,
in which case, no dice.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">wrap: </span><span class="p">(</span><span class="nx">expressions</span><span class="p">,</span> <span class="nx">statement</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="nx">expressions</span> <span class="k">if</span> <span class="nx">expressions</span><span class="p">.</span><span class="nx">contains_pure_statement</span><span class="p">()</span>
<span class="nv">func: </span><span class="k">new</span> <span class="nx">ParentheticalNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([],</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">expressions</span><span class="p">])))</span>
<span class="nv">call: </span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;call&#39;</span><span class="p">))]),</span> <span class="p">[</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">)])</span>
<span class="k">if</span> <span class="nx">statement</span> <span class="k">then</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">call</span><span class="p">])</span> <span class="k">else</span> <span class="nx">call</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-135"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-135">#</a> </div> <h2>Constants</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-136"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-136">#</a> </div> <p>Tabs are two spaces for pretty printing.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">TAB: </span><span class="s1">&#39; &#39;</span></pre></div> </td> </tr> <tr id="section-137"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-137">#</a> </div> <p>Trim out all trailing whitespace, so that the generated code plays nice
with Git.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">TRAILING_WHITESPACE: </span><span class="sr">/\s+$/gm</span></pre></div> </td> </tr> <tr id="section-138"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-138">#</a> </div> <p>Keep this identifier regex in sync with the Lexer.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">IDENTIFIER: </span><span class="sr">/^[a-zA-Z\$_](\w|\$)*$/</span></pre></div> </td> </tr> <tr id="section-139"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-139">#</a> </div> <h2>Utility Functions</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-140"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-140">#</a> </div> <p>Handy helper for a generating LiteralNode.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">literal: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,67 +0,0 @@
<!DOCTYPE html> <html> <head> <title>optparse.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> optparse.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>A simple <strong>OptionParser</strong> class to parse option flags from the command-line.
Use it like so:</p>
<pre><code>parser: new OptionParser switches, help_banner
options: parser.parse process.argv
</code></pre> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.OptionParser: </span><span class="nx">class</span> <span class="nx">OptionParser</span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Initialize with a list of valid options, in the form:</p>
<pre><code>[short-flag, long-flag, description]
</code></pre>
<p>Along with an an optional banner for the usage help.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">constructor: </span><span class="p">(</span><span class="nx">rules</span><span class="p">,</span> <span class="nx">banner</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">banner: </span> <span class="nx">banner</span>
<span class="err">@</span><span class="nv">rules: </span> <span class="nx">build_rules</span><span class="p">(</span><span class="nx">rules</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Parse the list of arguments, populating an <code>options</code> object with all of the
specified options, and returning it. <code>options.arguments</code> will be an array
containing the remaning non-option arguments. This is a simpler API than
many option parsers that allow you to attach callback actions for every
flag. Instead, you're responsible for interpreting the options object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parse: </span><span class="p">(</span><span class="nx">args</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">options: </span><span class="p">{</span><span class="nv">arguments: </span><span class="p">[]}</span>
<span class="nv">args: </span><span class="nx">normalize_arguments</span> <span class="nx">args</span>
<span class="k">while</span> <span class="nv">arg: </span><span class="nx">args</span><span class="p">.</span><span class="nx">shift</span><span class="p">()</span>
<span class="nv">is_option: </span><span class="o">!!</span><span class="p">(</span><span class="nx">arg</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LONG_FLAG</span><span class="p">)</span> <span class="o">or</span> <span class="nx">arg</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">SHORT_FLAG</span><span class="p">))</span>
<span class="nv">matched_rule: </span><span class="kc">no</span>
<span class="k">for</span> <span class="nx">rule</span> <span class="k">in</span> <span class="err">@</span><span class="nx">rules</span>
<span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">short_flag</span> <span class="o">is</span> <span class="nx">arg</span> <span class="o">or</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">long_flag</span> <span class="o">is</span> <span class="nx">arg</span>
<span class="nx">options</span><span class="p">[</span><span class="nx">rule</span><span class="p">.</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">has_argument</span> <span class="k">then</span> <span class="nx">args</span><span class="p">.</span><span class="nx">shift</span><span class="p">()</span> <span class="k">else</span> <span class="kc">true</span>
<span class="nv">matched_rule: </span><span class="kc">yes</span>
<span class="k">break</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;unrecognized option: $arg&quot;</span> <span class="k">if</span> <span class="nx">is_option</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">matched_rule</span>
<span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">push</span> <span class="nx">arg</span> <span class="nx">unless</span> <span class="nx">is_option</span>
<span class="nx">options</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Return the help text for this <strong>OptionParser</strong>, listing and describing all
of the valid options, for <code>--help</code> and such.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">help: </span><span class="o">-&gt;</span>
<span class="nv">lines: </span><span class="p">[</span><span class="s1">&#39;Available options:&#39;</span><span class="p">]</span>
<span class="nx">lines</span><span class="p">.</span><span class="nx">unshift</span> <span class="s2">&quot;$@banner\n&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">banner</span>
<span class="k">for</span> <span class="nx">rule</span> <span class="k">in</span> <span class="err">@</span><span class="nx">rules</span>
<span class="nv">spaces: </span> <span class="mi">15</span> <span class="o">-</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">long_flag</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">spaces: </span> <span class="k">if</span> <span class="nx">spaces</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="k">then</span> <span class="p">(</span><span class="s1">&#39; &#39;</span> <span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">..</span><span class="nx">spaces</span><span class="p">]).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
<span class="nv">let_part: </span><span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">short_flag</span> <span class="k">then</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">short_flag</span> <span class="o">+</span> <span class="s1">&#39;, &#39;</span> <span class="k">else</span> <span class="s1">&#39; &#39;</span>
<span class="nx">lines</span><span class="p">.</span><span class="nx">push</span> <span class="s2">&quot; $let_part${rule.long_flag}$spaces${rule.description}&quot;</span>
<span class="s2">&quot;\n${ lines.join(&#39;\n&#39;) }\n&quot;</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <h2>Helpers</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Regex matchers for option flags.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">LONG_FLAG: </span> <span class="sr">/^(--\w[\w\-]+)/</span>
<span class="nv">SHORT_FLAG: </span><span class="sr">/^(-\w)/</span>
<span class="nv">MULTI_FLAG: </span><span class="sr">/^-(\w{2,})/</span>
<span class="nv">OPTIONAL: </span> <span class="sr">/\[(.+)\]/</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>Build and return the list of option rules. If the optional <em>short-flag</em> is
unspecified, leave it out by padding with <code>null</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">build_rules: </span><span class="p">(</span><span class="nx">rules</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">for</span> <span class="nx">tuple</span> <span class="k">in</span> <span class="nx">rules</span>
<span class="nx">tuple</span><span class="p">.</span><span class="nx">unshift</span> <span class="kc">null</span> <span class="k">if</span> <span class="nx">tuple</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;</span> <span class="mi">3</span>
<span class="nx">build_rule</span> <span class="nx">tuple</span><span class="p">...</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Build a rule from a <code>-o</code> short flag, a <code>--output [DIR]</code> long flag, and the
description of what the option does.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">build_rule: </span><span class="p">(</span><span class="nx">short_flag</span><span class="p">,</span> <span class="nx">long_flag</span><span class="p">,</span> <span class="nx">description</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">match: </span> <span class="nx">long_flag</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">OPTIONAL</span><span class="p">)</span>
<span class="nv">long_flag: </span> <span class="nx">long_flag</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LONG_FLAG</span><span class="p">)[</span><span class="mi">1</span><span class="p">]</span>
<span class="p">{</span>
<span class="nv">name: </span> <span class="nx">long_flag</span><span class="p">.</span><span class="nx">substr</span> <span class="mi">2</span>
<span class="nv">short_flag: </span> <span class="nx">short_flag</span>
<span class="nv">long_flag: </span> <span class="nx">long_flag</span>
<span class="nv">description: </span> <span class="nx">description</span>
<span class="nv">has_argument: </span><span class="o">!!</span><span class="p">(</span><span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Normalize arguments by expanding merged flags into multiple flags. This allows
you to have <code>-wl</code> be the same as <code>--watch --lint</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">normalize_arguments: </span><span class="p">(</span><span class="nx">args</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">args: </span><span class="nx">args</span><span class="p">.</span><span class="nx">slice</span> <span class="mi">0</span>
<span class="nv">result: </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="nx">args</span>
<span class="k">if</span> <span class="nv">match: </span><span class="nx">arg</span><span class="p">.</span><span class="nx">match</span> <span class="nx">MULTI_FLAG</span>
<span class="nx">result</span><span class="p">.</span><span class="nx">push</span> <span class="s1">&#39;-&#39;</span> <span class="o">+</span> <span class="nx">l</span> <span class="k">for</span> <span class="nx">l</span> <span class="k">in</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">split</span> <span class="s1">&#39;&#39;</span>
<span class="k">else</span>
<span class="nx">result</span><span class="p">.</span><span class="nx">push</span> <span class="nx">arg</span>
<span class="nx">result</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,21 +0,0 @@
<!DOCTYPE html> <html> <head> <title>repl.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> repl.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>A very simple Read-Eval-Print-Loop. Compiles one line at a time to JavaScript
and evaluates it. Good for simple tests, or poking around the <strong>Node.js</strong> API.
Using it looks like this:</p>
<pre><code>coffee&gt; puts "$num bottles of beer" for num in [99..1]
</code></pre> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Require the <strong>coffee-script</strong> module to get access to the compiler.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">CoffeeScript: </span><span class="nx">require</span> <span class="s1">&#39;./coffee-script&#39;</span>
<span class="nv">helpers: </span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./helpers&#39;</span><span class="p">).</span><span class="nx">helpers</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Our prompt.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">prompt: </span><span class="s1">&#39;coffee&gt; &#39;</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Quick alias for quitting the REPL.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">helpers</span><span class="p">.</span><span class="nx">extend</span> <span class="nx">global</span><span class="p">,</span> <span class="p">{</span>
<span class="nv">quit: </span><span class="o">-&gt;</span> <span class="nx">process</span><span class="p">.</span><span class="nx">exit</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>The main REPL function. <strong>run</strong> is called every time a line of code is entered.
Attempt to evaluate the command. If there's an exception, print it out instead
of exiting.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">run: </span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">try</span>
<span class="nv">val: </span><span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">code</span><span class="p">,</span> <span class="p">{</span><span class="nv">no_wrap: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">globals: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">source: </span><span class="s1">&#39;repl&#39;</span><span class="p">}</span>
<span class="nx">p</span> <span class="nx">val</span> <span class="k">if</span> <span class="nx">val</span> <span class="o">isnt</span> <span class="kc">undefined</span>
<span class="k">catch</span> <span class="nx">err</span>
<span class="nx">puts</span> <span class="nx">err</span><span class="p">.</span><span class="nx">stack</span> <span class="o">or</span> <span class="nx">err</span><span class="p">.</span><span class="nx">toString</span><span class="p">()</span>
<span class="nx">print</span> <span class="nx">prompt</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Start up the REPL by opening <strong>stdio</strong> and listening for input.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;data&#39;</span><span class="p">,</span> <span class="nx">run</span>
<span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">open</span><span class="p">()</span>
<span class="nx">print</span> <span class="nx">prompt</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,209 +0,0 @@
<!DOCTYPE html> <html> <head> <title>rewriter.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> rewriter.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>The CoffeeScript language has a good deal of optional syntax, implicit syntax,
and shorthand syntax. This can greatly complicate a grammar and bloat
the resulting parse table. Instead of making the parser handle it all, we take
a series of passes over the token stream, using this <strong>Rewriter</strong> to convert
shorthand into the unambiguous long form, add implicit indentation and
parentheses, balance incorrect nestings, and generally clean things up.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Set up exported variables for both Node.js and the browser.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">if</span> <span class="nx">process</span><span class="o">?</span>
<span class="nv">helpers: </span><span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./helpers&#39;</span><span class="p">).</span><span class="nx">helpers</span>
<span class="k">else</span>
<span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span>
<span class="nv">helpers: </span> <span class="k">this</span><span class="p">.</span><span class="nx">helpers</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Import the helpers we need.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">include: </span><span class="nx">helpers</span><span class="p">.</span><span class="nx">include</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>The <strong>Rewriter</strong> class is used by the <a href="lexer.html">Lexer</a>, directly against
its internal array of tokens.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">exports.Rewriter: </span><span class="nx">class</span> <span class="nx">Rewriter</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Rewrite the token stream in multiple passes, one logical filter at
a time. This could certainly be changed into a single pass through the
stream, with a big ol' efficient switch, but it's much nicer to work with
like this. The order of these passes matters -- indentation must be
corrected before implicit parentheses can be wrapped around blocks of code.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">rewrite: </span><span class="p">(</span><span class="nx">tokens</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nv">tokens: </span><span class="nx">tokens</span>
<span class="err">@</span><span class="nx">adjust_comments</span><span class="p">()</span>
<span class="err">@</span><span class="nx">remove_leading_newlines</span><span class="p">()</span>
<span class="err">@</span><span class="nx">remove_mid_expression_newlines</span><span class="p">()</span>
<span class="err">@</span><span class="nx">close_open_calls_and_indexes</span><span class="p">()</span>
<span class="err">@</span><span class="nx">add_implicit_indentation</span><span class="p">()</span>
<span class="err">@</span><span class="nx">add_implicit_parentheses</span><span class="p">()</span>
<span class="err">@</span><span class="nx">ensure_balance</span><span class="p">(</span><span class="nx">BALANCED_PAIRS</span><span class="p">)</span>
<span class="err">@</span><span class="nx">rewrite_closing_parens</span><span class="p">()</span>
<span class="err">@</span><span class="nx">tokens</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Rewrite the token stream, looking one token ahead and behind.
Allow the return value of the block to tell us how many tokens to move
forwards (or backwards) in the stream, to make sure we don't miss anything
as tokens are inserted and removed, and the stream changes length under
our feet.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">scan_tokens: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">i: </span><span class="mi">0</span>
<span class="k">while</span> <span class="kc">true</span>
<span class="k">break</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span>
<span class="nv">move: </span><span class="nx">block</span><span class="p">(</span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">],</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">],</span> <span class="nx">i</span><span class="p">)</span>
<span class="nv">i: </span><span class="o">+</span> <span class="nx">move</span>
<span class="kc">true</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>Massage newlines and indentations so that comments don't have to be
correctly indented, or appear on a line of their own.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">adjust_comments: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
<span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;COMMENT&#39;</span>
<span class="nv">after: </span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">2</span><span class="p">]</span>
<span class="k">if</span> <span class="nx">after</span> <span class="o">and</span> <span class="nx">after</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span> <span class="nx">i</span> <span class="o">+</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">1</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span> <span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">after</span>
<span class="k">return</span> <span class="mi">1</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">prev</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;TERMINATOR&#39;</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;INDENT&#39;</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;OUTDENT&#39;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span> <span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span><span class="p">,</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">2</span><span class="p">]]</span>
<span class="k">return</span> <span class="mi">2</span>
<span class="k">else</span>
<span class="k">return</span> <span class="mi">1</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Leading newlines would introduce an ambiguity in the grammar, so we
dispatch them here.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">remove_leading_newlines: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">shift</span><span class="p">()</span> <span class="k">while</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">and</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Some blocks occur in the middle of expressions -- when we're expecting
this, remove their trailing newlines.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">remove_mid_expression_newlines: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
<span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">post</span> <span class="o">and</span> <span class="nx">include</span><span class="p">(</span><span class="nx">EXPRESSION_CLOSE</span><span class="p">,</span> <span class="nx">post</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">return</span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>The lexer has tagged the opening parenthesis of a method call, and the
opening bracket of an indexing operation. Match them with their paired
close.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">close_open_calls_and_indexes: </span><span class="o">-&gt;</span>
<span class="nv">parens: </span> <span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="nv">brackets: </span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
<span class="k">switch</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">when</span> <span class="s1">&#39;CALL_START&#39;</span> <span class="k">then</span> <span class="nx">parens</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="k">when</span> <span class="s1">&#39;INDEX_START&#39;</span> <span class="k">then</span> <span class="nx">brackets</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="k">when</span> <span class="s1">&#39;(&#39;</span> <span class="k">then</span> <span class="nx">parens</span><span class="p">[</span><span class="nx">parens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">when</span> <span class="s1">&#39;[&#39;</span> <span class="k">then</span> <span class="nx">brackets</span><span class="p">[</span><span class="nx">brackets</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">when</span> <span class="s1">&#39;)&#39;</span>
<span class="k">if</span> <span class="nx">parens</span><span class="p">[</span><span class="nx">parens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">is</span> <span class="mi">0</span>
<span class="nx">parens</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;CALL_END&#39;</span>
<span class="k">else</span>
<span class="nx">parens</span><span class="p">[</span><span class="nx">parens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">when</span> <span class="s1">&#39;]&#39;</span>
<span class="k">if</span> <span class="nx">brackets</span><span class="p">[</span><span class="nx">brackets</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">==</span> <span class="mi">0</span>
<span class="nx">brackets</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;INDEX_END&#39;</span>
<span class="k">else</span>
<span class="nx">brackets</span><span class="p">[</span><span class="nx">brackets</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">return</span> <span class="mi">1</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Methods may be optionally called without parentheses, for simple cases.
Insert the implicit parentheses here, so that the parser doesn't have to
deal with them.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">add_implicit_parentheses: </span><span class="o">-&gt;</span>
<span class="nv">stack: </span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="nv">calls: </span><span class="mi">0</span>
<span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
<span class="nv">tag: </span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">switch</span> <span class="nx">tag</span>
<span class="k">when</span> <span class="s1">&#39;CALL_START&#39;</span> <span class="k">then</span> <span class="nv">calls: </span><span class="o">+</span> <span class="mi">1</span>
<span class="k">when</span> <span class="s1">&#39;CALL_END&#39;</span> <span class="k">then</span> <span class="nv">calls: </span><span class="o">-</span> <span class="mi">1</span>
<span class="k">when</span> <span class="s1">&#39;INDENT&#39;</span> <span class="k">then</span> <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="k">when</span> <span class="s1">&#39;OUTDENT&#39;</span>
<span class="nv">last: </span><span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="o">+</span> <span class="nx">last</span>
<span class="nv">open: </span><span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">&gt;</span> <span class="mi">0</span>
<span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;CALL_END&#39;</span> <span class="o">and</span> <span class="nx">calls</span> <span class="o">&lt;</span> <span class="mi">0</span> <span class="o">and</span> <span class="nx">open</span>
<span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="o">-</span> <span class="mi">1</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;CALL_END&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
<span class="k">return</span> <span class="mi">2</span>
<span class="k">if</span> <span class="o">!</span><span class="nx">post</span><span class="o">?</span> <span class="o">or</span> <span class="nx">include</span> <span class="nx">IMPLICIT_END</span><span class="p">,</span> <span class="nx">tag</span>
<span class="k">return</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span> <span class="o">and</span> <span class="nx">prev</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">IMPLICIT_BLOCK</span><span class="p">,</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">if</span> <span class="nx">open</span> <span class="o">or</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span>
<span class="nv">idx: </span><span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;OUTDENT&#39;</span> <span class="k">then</span> <span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span> <span class="k">else</span> <span class="nx">i</span>
<span class="nv">stack_pointer: </span><span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span> <span class="k">then</span> <span class="mi">2</span> <span class="k">else</span> <span class="mi">1</span>
<span class="k">for</span> <span class="nx">tmp</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">stack_pointer</span><span class="p">]]</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">idx</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;CALL_END&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
<span class="nv">size: </span><span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">stack_pointer</span><span class="p">]</span> <span class="o">+</span> <span class="mi">1</span>
<span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">stack_pointer</span><span class="p">]</span><span class="o">:</span> <span class="mi">0</span>
<span class="k">return</span> <span class="nx">size</span>
<span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">prev</span> <span class="o">and</span> <span class="nx">include</span><span class="p">(</span><span class="nx">IMPLICIT_FUNC</span><span class="p">,</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">IMPLICIT_CALL</span><span class="p">,</span> <span class="nx">tag</span>
<span class="nv">calls: </span><span class="mi">0</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;CALL_START&#39;</span><span class="p">,</span> <span class="s1">&#39;(&#39;</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
<span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">return</span> <span class="mi">2</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-12">#</a> </div> <p>Because our grammar is LALR(1), it can't handle some single-line
expressions that lack ending delimiters. The <strong>Rewriter</strong> adds the implicit
blocks, so it doesn't need to. ')' can close a single-line block,
but we need to make sure it's balanced.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">add_implicit_indentation: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
<span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">include</span><span class="p">(</span><span class="nx">SINGLE_LINERS</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span>
<span class="nx">post</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;INDENT&#39;</span> <span class="o">and</span>
<span class="o">not</span> <span class="p">(</span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;ELSE&#39;</span> <span class="o">and</span> <span class="nx">post</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;IF&#39;</span><span class="p">)</span>
<span class="nv">starter: </span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
<span class="nv">idx: </span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span>
<span class="nv">parens: </span><span class="mi">0</span>
<span class="k">while</span> <span class="kc">true</span>
<span class="nv">idx: </span><span class="o">+</span> <span class="mi">1</span>
<span class="nv">tok: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">idx</span><span class="p">]</span>
<span class="nv">pre: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">idx</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span>
<span class="k">if</span> <span class="p">(</span><span class="o">not</span> <span class="nx">tok</span> <span class="o">or</span>
<span class="p">(</span><span class="nx">include</span><span class="p">(</span><span class="nx">SINGLE_CLOSERS</span><span class="p">,</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;;&#39;</span><span class="p">)</span> <span class="o">or</span>
<span class="p">(</span><span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;)&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">parens</span> <span class="o">is</span> <span class="mi">0</span><span class="p">))</span> <span class="o">and</span>
<span class="o">not</span> <span class="p">(</span><span class="nx">starter</span> <span class="o">is</span> <span class="s1">&#39;ELSE&#39;</span> <span class="o">and</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">)</span>
<span class="nv">insertion: </span><span class="k">if</span> <span class="nx">pre</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s2">&quot;,&quot;</span> <span class="k">then</span> <span class="nx">idx</span> <span class="o">-</span> <span class="mi">1</span> <span class="k">else</span> <span class="nx">idx</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">insertion</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
<span class="k">break</span>
<span class="nv">parens: </span><span class="o">+</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;(&#39;</span>
<span class="nv">parens: </span><span class="o">-</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;)&#39;</span>
<span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;THEN&#39;</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">return</span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-13">#</a> </div> <p>Ensure that all listed pairs of tokens are correctly balanced throughout
the course of the token stream.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">ensure_balance: </span><span class="p">(</span><span class="nx">pairs</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nv">levels: </span><span class="p">{}</span>
<span class="nv">open_line: </span><span class="p">{}</span>
<span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
<span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">pairs</span>
<span class="p">[</span><span class="nx">open</span><span class="p">,</span> <span class="nx">close</span><span class="p">]</span><span class="o">:</span> <span class="nx">pair</span>
<span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span><span class="o">:</span> <span class="o">or</span> <span class="mi">0</span>
<span class="k">if</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="nx">open</span>
<span class="nx">open_line</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span><span class="o">:</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="k">if</span> <span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span> <span class="o">==</span> <span class="mi">0</span>
<span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span><span class="o">:</span> <span class="o">+</span> <span class="mi">1</span>
<span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span><span class="o">:</span> <span class="o">-</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="nx">close</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="p">(</span><span class="s2">&quot;too many ${token[1]} on line ${token[2] + 1}&quot;</span><span class="p">)</span> <span class="k">if</span> <span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span> <span class="o">&lt;</span> <span class="mi">0</span>
<span class="k">return</span> <span class="mi">1</span>
<span class="nv">unclosed: </span><span class="nx">key</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">value</span> <span class="k">of</span> <span class="nx">levels</span> <span class="k">when</span> <span class="nx">value</span> <span class="o">&gt;</span> <span class="mi">0</span>
<span class="k">if</span> <span class="nx">unclosed</span><span class="p">.</span><span class="nx">length</span>
<span class="nv">open: </span><span class="nx">unclosed</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="nv">line: </span><span class="nx">open_line</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;unclosed $open on line $line&quot;</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-14">#</a> </div> <p>We'd like to support syntax like this:</p>
<pre><code>el.click((event) -&gt;
el.hide())
</code></pre>
<p>In order to accomplish this, move outdents that follow closing parens
inwards, safely. The steps to accomplish this are:</p>
<ol>
<li>Check that all paired tokens are balanced and in order.</li>
<li>Rewrite the stream with a stack: if you see an '(' or INDENT, add it
to the stack. If you see an ')' or OUTDENT, pop the stack and replace
it with the inverse of what we've just popped.</li>
<li>Keep track of "debt" for tokens that we fake, to make sure we end
up balanced in the end.</li>
</ol> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">rewrite_closing_parens: </span><span class="o">-&gt;</span>
<span class="nv">stack: </span><span class="p">[]</span>
<span class="nv">debt: </span> <span class="p">{}</span>
<span class="p">(</span><span class="nx">debt</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span><span class="o">:</span> <span class="mi">0</span><span class="p">)</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="nx">INVERSES</span>
<span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
<span class="nv">tag: </span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="nv">inv: </span><span class="nx">INVERSES</span><span class="p">[</span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]]</span>
<span class="k">if</span> <span class="nx">include</span> <span class="nx">EXPRESSION_START</span><span class="p">,</span> <span class="nx">tag</span>
<span class="nx">stack</span><span class="p">.</span><span class="nx">push</span> <span class="nx">token</span>
<span class="k">return</span> <span class="mi">1</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">EXPRESSION_END</span><span class="p">,</span> <span class="nx">tag</span>
<span class="k">if</span> <span class="nx">debt</span><span class="p">[</span><span class="nx">inv</span><span class="p">]</span> <span class="o">&gt;</span> <span class="mi">0</span>
<span class="nx">debt</span><span class="p">[</span><span class="nx">inv</span><span class="p">]</span><span class="o">:</span> <span class="o">-</span> <span class="mi">1</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span> <span class="nx">i</span><span class="p">,</span> <span class="mi">1</span>
<span class="k">return</span> <span class="mi">0</span>
<span class="k">else</span>
<span class="nv">match: </span><span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
<span class="nv">mtag: </span> <span class="nx">match</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">return</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="nx">INVERSES</span><span class="p">[</span><span class="nx">mtag</span><span class="p">]</span>
<span class="nx">debt</span><span class="p">[</span><span class="nx">mtag</span><span class="p">]</span><span class="o">:</span> <span class="o">+</span> <span class="mi">1</span>
<span class="nv">val: </span><span class="k">if</span> <span class="nx">mtag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span> <span class="k">then</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="nx">INVERSES</span><span class="p">[</span><span class="nx">mtag</span><span class="p">]</span>
<span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span> <span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="nx">INVERSES</span><span class="p">[</span><span class="nx">mtag</span><span class="p">],</span> <span class="nx">val</span><span class="p">]</span>
<span class="k">return</span> <span class="mi">1</span>
<span class="k">else</span>
<span class="k">return</span> <span class="mi">1</span></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-15">#</a> </div> <h2>Constants</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-16">#</a> </div> <p>List of the token pairs that must be balanced.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">BALANCED_PAIRS: </span><span class="p">[[</span><span class="s1">&#39;(&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;[&#39;</span><span class="p">,</span> <span class="s1">&#39;]&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;{&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">],</span>
<span class="p">[</span><span class="s1">&#39;PARAM_START&#39;</span><span class="p">,</span> <span class="s1">&#39;PARAM_END&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;CALL_START&#39;</span><span class="p">,</span> <span class="s1">&#39;CALL_END&#39;</span><span class="p">],</span>
<span class="p">[</span><span class="s1">&#39;INDEX_START&#39;</span><span class="p">,</span> <span class="s1">&#39;INDEX_END&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;SOAKED_INDEX_START&#39;</span><span class="p">,</span> <span class="s1">&#39;SOAKED_INDEX_END&#39;</span><span class="p">]]</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-17">#</a> </div> <p>The inverse mappings of <code>BALANCED_PAIRS</code> we're trying to fix up, so we can
look things up from either end.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">INVERSES: </span><span class="p">{}</span>
<span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">BALANCED_PAIRS</span>
<span class="nx">INVERSES</span><span class="p">[</span><span class="nx">pair</span><span class="p">[</span><span class="mi">0</span><span class="p">]]</span><span class="o">:</span> <span class="nx">pair</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="nx">INVERSES</span><span class="p">[</span><span class="nx">pair</span><span class="p">[</span><span class="mi">1</span><span class="p">]]</span><span class="o">:</span> <span class="nx">pair</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-18">#</a> </div> <p>The tokens that signal the start of a balanced pair.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">EXPRESSION_START: </span><span class="nx">pair</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">BALANCED_PAIRS</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-19">#</a> </div> <p>The tokens that signal the end of a balanced pair.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">EXPRESSION_END: </span> <span class="nx">pair</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">BALANCED_PAIRS</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-20">#</a> </div> <p>Tokens that indicate the close of a clause of an expression.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">EXPRESSION_CLOSE: </span><span class="p">[</span><span class="s1">&#39;CATCH&#39;</span><span class="p">,</span> <span class="s1">&#39;WHEN&#39;</span><span class="p">,</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s1">&#39;FINALLY&#39;</span><span class="p">].</span><span class="nx">concat</span> <span class="nx">EXPRESSION_END</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-21">#</a> </div> <p>Tokens that, if followed by an <code>IMPLICIT_CALL</code>, indicate a function invocation.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">IMPLICIT_FUNC: </span> <span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="s1">&#39;SUPER&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="s1">&#39;CALL_END&#39;</span><span class="p">,</span> <span class="s1">&#39;]&#39;</span><span class="p">,</span> <span class="s1">&#39;INDEX_END&#39;</span><span class="p">,</span> <span class="s1">&#39;&lt;-&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-22">#</a> </div> <p>If preceded by an <code>IMPLICIT_FUNC</code>, indicates a function invocation.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">IMPLICIT_CALL: </span> <span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="s1">&#39;NUMBER&#39;</span><span class="p">,</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s1">&#39;JS&#39;</span><span class="p">,</span> <span class="s1">&#39;REGEX&#39;</span><span class="p">,</span> <span class="s1">&#39;NEW&#39;</span><span class="p">,</span> <span class="s1">&#39;PARAM_START&#39;</span><span class="p">,</span>
<span class="s1">&#39;TRY&#39;</span><span class="p">,</span> <span class="s1">&#39;DELETE&#39;</span><span class="p">,</span> <span class="s1">&#39;TYPEOF&#39;</span><span class="p">,</span> <span class="s1">&#39;SWITCH&#39;</span><span class="p">,</span> <span class="s1">&#39;EXTENSION&#39;</span><span class="p">,</span>
<span class="s1">&#39;TRUE&#39;</span><span class="p">,</span> <span class="s1">&#39;FALSE&#39;</span><span class="p">,</span> <span class="s1">&#39;YES&#39;</span><span class="p">,</span> <span class="s1">&#39;NO&#39;</span><span class="p">,</span> <span class="s1">&#39;ON&#39;</span><span class="p">,</span> <span class="s1">&#39;OFF&#39;</span><span class="p">,</span> <span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="s1">&#39;!!&#39;</span><span class="p">,</span> <span class="s1">&#39;NOT&#39;</span><span class="p">,</span>
<span class="s1">&#39;@&#39;</span><span class="p">,</span> <span class="s1">&#39;-&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;=&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;[&#39;</span><span class="p">,</span> <span class="s1">&#39;(&#39;</span><span class="p">,</span> <span class="s1">&#39;{&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-23">#</a> </div> <p>Tokens indicating that the implicit call must enclose a block of expressions.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">IMPLICIT_BLOCK: </span><span class="p">[</span><span class="s1">&#39;-&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;=&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;{&#39;</span><span class="p">,</span> <span class="s1">&#39;[&#39;</span><span class="p">,</span> <span class="s1">&#39;,&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-24">#</a> </div> <p>Tokens that always mark the end of an implicit call for single-liners.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">IMPLICIT_END: </span> <span class="p">[</span><span class="s1">&#39;IF&#39;</span><span class="p">,</span> <span class="s1">&#39;UNLESS&#39;</span><span class="p">,</span> <span class="s1">&#39;FOR&#39;</span><span class="p">,</span> <span class="s1">&#39;WHILE&#39;</span><span class="p">,</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">]</span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-25">#</a> </div> <p>Single-line flavors of block expressions that have unclosed endings.
The grammar can't disambiguate them, so we insert the implicit indentation.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">SINGLE_LINERS: </span><span class="p">[</span><span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s2">&quot;-&gt;&quot;</span><span class="p">,</span> <span class="s2">&quot;=&gt;&quot;</span><span class="p">,</span> <span class="s1">&#39;TRY&#39;</span><span class="p">,</span> <span class="s1">&#39;FINALLY&#39;</span><span class="p">,</span> <span class="s1">&#39;THEN&#39;</span><span class="p">]</span>
<span class="nv">SINGLE_CLOSERS: </span><span class="p">[</span><span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s1">&#39;CATCH&#39;</span><span class="p">,</span> <span class="s1">&#39;FINALLY&#39;</span><span class="p">,</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;LEADING_WHEN&#39;</span><span class="p">]</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -1,42 +0,0 @@
<!DOCTYPE html> <html> <head> <title>scope.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To &hellip; <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="cake.html"> cake.coffee </a> <a class="source" href="coffee-script.html"> coffee-script.coffee </a> <a class="source" href="command.html"> command.coffee </a> <a class="source" href="grammar.html"> grammar.coffee </a> <a class="source" href="helpers.html"> helpers.coffee </a> <a class="source" href="lexer.html"> lexer.coffee </a> <a class="source" href="nodes.html"> nodes.coffee </a> <a class="source" href="optparse.html"> optparse.coffee </a> <a class="source" href="repl.html"> repl.coffee </a> <a class="source" href="rewriter.html"> rewriter.coffee </a> <a class="source" href="scope.html"> scope.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> scope.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-1">#</a> </div> <p>The <strong>Scope</strong> class regulates lexical scoping within CoffeeScript. As you
generate code, you create a tree of scopes in the same shape as the nested
function bodies. Each scope knows about the variables declared within it,
and has a reference to its parent enclosing scope. In this way, we know which
variables are new and need to be declared with <code>var</code>, and which are shared
with the outside.</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-2">#</a> </div> <p>Set up exported variables for both <strong>Node.js</strong> and the browser.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span> <span class="nx">unless</span> <span class="nx">process</span><span class="o">?</span>
<span class="nv">exports.Scope: </span><span class="nx">class</span> <span class="nx">Scope</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-3">#</a> </div> <p>Initialize a scope with its parent, for lookups up the chain,
as well as a reference to the <strong>Expressions</strong> node is belongs to, which is
where it should declare its variables, and a reference to the function that
it wraps.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">constructor: </span><span class="p">(</span><span class="nx">parent</span><span class="p">,</span> <span class="nx">expressions</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="p">[</span><span class="err">@</span><span class="nx">parent</span><span class="p">,</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">,</span> <span class="err">@</span><span class="nx">method</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">parent</span><span class="p">,</span> <span class="nx">expressions</span><span class="p">,</span> <span class="nx">method</span><span class="p">]</span>
<span class="err">@</span><span class="nv">variables: </span><span class="p">{}</span>
<span class="err">@</span><span class="nv">temp_var: </span><span class="k">if</span> <span class="err">@</span><span class="nx">parent</span> <span class="k">then</span> <span class="err">@</span><span class="nx">parent</span><span class="p">.</span><span class="nx">temp_var</span> <span class="k">else</span> <span class="s1">&#39;_a&#39;</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-4">#</a> </div> <p>Look up a variable name in lexical scope, and declare it if it does not
already exist.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">find: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="err">@</span><span class="nx">check</span> <span class="nx">name</span>
<span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;var&#39;</span>
<span class="kc">false</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-5">#</a> </div> <p>Reserve a variable name as originating from a function parameter for this
scope. No <code>var</code> required for internal references.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parameter: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;param&#39;</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-6">#</a> </div> <p>Just check to see if a variable has already been declared, without reserving.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">check: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span>
<span class="o">!!</span><span class="p">(</span><span class="err">@</span><span class="nx">parent</span> <span class="o">and</span> <span class="err">@</span><span class="nx">parent</span><span class="p">.</span><span class="nx">check</span><span class="p">(</span><span class="nx">name</span><span class="p">))</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-7">#</a> </div> <p>If we need to store an intermediate result, find an available name for a
compiler-generated variable. <code>_a</code>, <code>_b</code>, and so on...</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">free_variable: </span><span class="o">-&gt;</span>
<span class="k">while</span> <span class="err">@</span><span class="nx">check</span> <span class="err">@</span><span class="nx">temp_var</span>
<span class="nv">ordinal: </span><span class="mi">1</span> <span class="o">+</span> <span class="nb">parseInt</span> <span class="err">@</span><span class="nx">temp_var</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">1</span><span class="p">),</span> <span class="mi">36</span>
<span class="err">@</span><span class="nv">temp_var: </span><span class="s1">&#39;_&#39;</span> <span class="o">+</span> <span class="nx">ordinal</span><span class="p">.</span><span class="nx">toString</span><span class="p">(</span><span class="mi">36</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\d/g</span><span class="p">,</span> <span class="s1">&#39;a&#39;</span><span class="p">)</span>
<span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="err">@</span><span class="nx">temp_var</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;var&#39;</span>
<span class="err">@</span><span class="nx">temp_var</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-8">#</a> </div> <p>Ensure that an assignment is made at the top of this scope
(or at the top-level scope, if requested).</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">assign: </span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">top_level</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="k">return</span> <span class="err">@</span><span class="nx">parent</span><span class="p">.</span><span class="nx">assign</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">top_level</span><span class="p">)</span> <span class="k">if</span> <span class="nx">top_level</span> <span class="o">and</span> <span class="err">@</span><span class="nx">parent</span>
<span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="p">{</span><span class="nv">value: </span><span class="nx">value</span><span class="p">,</span> <span class="nv">assigned: </span><span class="kc">true</span><span class="p">}</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-9">#</a> </div> <p>Does this scope reference any variables that need to be declared in the
given function body?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">has_declarations: </span><span class="p">(</span><span class="nx">body</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">body</span> <span class="o">is</span> <span class="err">@</span><span class="nx">expressions</span> <span class="o">and</span> <span class="err">@</span><span class="nx">declared_variables</span><span class="p">().</span><span class="nx">length</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-10">#</a> </div> <p>Does this scope reference any assignments that need to be declared at the
top of the given function body?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">has_assignments: </span><span class="p">(</span><span class="nx">body</span><span class="p">)</span> <span class="o">-&gt;</span>
<span class="nx">body</span> <span class="o">is</span> <span class="err">@</span><span class="nx">expressions</span> <span class="o">and</span> <span class="err">@</span><span class="nx">assigned_variables</span><span class="p">().</span><span class="nx">length</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-11">#</a> </div> <p>Return the list of variables first declared in this scope.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">declared_variables: </span><span class="o">-&gt;</span>
<span class="p">(</span><span class="nx">key</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="err">@</span><span class="nx">variables</span> <span class="k">when</span> <span class="nx">val</span> <span class="o">is</span> <span class="s1">&#39;var&#39;</span><span class="p">).</span><span class="nx">sort</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-12">#</a> </div> <p>Return the list of assignments that are supposed to be made at the top
of this scope.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">assigned_variables: </span><span class="o">-&gt;</span>
<span class="s2">&quot;$key = ${val.value}&quot;</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="err">@</span><span class="nx">variables</span> <span class="k">when</span> <span class="nx">val</span><span class="p">.</span><span class="nx">assigned</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-13">#</a> </div> <p>Compile the JavaScript for all of the variable declarations in this scope.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compiled_declarations: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">declared_variables</span><span class="p">().</span><span class="nx">join</span> <span class="s1">&#39;, &#39;</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="octowrap"> <a class="octothorpe" href="#section-14">#</a> </div> <p>Compile the JavaScript for all of the variable assignments in this scope.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">compiled_assignments: </span><span class="o">-&gt;</span>
<span class="err">@</span><span class="nx">assigned_variables</span><span class="p">().</span><span class="nx">join</span> <span class="s1">&#39;, &#39;</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>

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@@ -10,5 +10,4 @@
let_the_wild_rumpus_begin();
}
car.speed < speed_limit ? accelerate() : null;
print("My name is " + this.name);
})();
})();

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@@ -0,0 +1,7 @@
(function(){
var backwards;
backwards = function backwards() {
return alert(Array.prototype.slice.call(arguments, 0).reverse());
};
backwards("stairway", "to", "heaven");
})();

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@@ -1,26 +1,34 @@
(function(){
var _a, _b, _c, _d, _e, _f, _g, _h, _i, _j, food, lunch, roid, roid2;
var __a, __b, __c, __d, __e, __f, __g, __h, __i, __j, food, lunch, roid, roid2;
// Eat lunch.
lunch = (function() {
_a = []; _b = ['toast', 'cheese', 'wine'];
for (_c = 0, _d = _b.length; _c < _d; _c++) {
food = _b[_c];
_a.push(eat(food));
__a = ['toast', 'cheese', 'wine'];
__c = [];
for (__b in __a) {
if (__a.hasOwnProperty(__b)) {
food = __a[__b];
__d = eat(food);
__c.push(__d);
}
}
return _a;
}).call(this);
return __c;
})();
// Naive collision detection.
_e = asteroids;
for (_f = 0, _g = _e.length; _f < _g; _f++) {
roid = _e[_f];
_h = asteroids;
for (_i = 0, _j = _h.length; _i < _j; _i++) {
roid2 = _h[_i];
if (roid !== roid2) {
if (roid.overlaps(roid2)) {
roid.explode();
__e = asteroids;
for (__f in __e) {
if (__e.hasOwnProperty(__f)) {
roid = __e[__f];
__h = asteroids;
for (__i in __h) {
if (__h.hasOwnProperty(__i)) {
roid2 = __h[__i];
if (roid !== roid2) {
if (roid.overlaps(roid2)) {
roid.explode();
}
}
}
}
}
}
})();
})();

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@@ -2,4 +2,4 @@
var difficulty, greeting;
greeting = "Hello CoffeeScript";
difficulty = 0.5;
})();
})();

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@@ -1,12 +0,0 @@
(function(){
var get_source, url;
url = "documentation/coffee/binding.coffee";
get_source = (function(func, obj, args) {
return function() {
return func.apply(obj, args.concat(Array.prototype.slice.call(arguments, 0)));
};
}(jQuery.get, jQuery, [url]));
get_source(function(response) {
return alert(response);
});
})();

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@@ -0,0 +1,8 @@
(function(){
$('table.list').each(function(table) {
return $('tr.account', table).each(function(row) {
row.show();
return row.highlight();
});
});
})();

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@@ -1,13 +0,0 @@
(function(){
task('test', 'run each of the unit tests', function() {
var _a, _b, _c, _d, test;
_a = []; _b = test_files;
for (_c = 0, _d = _b.length; _c < _d; _c++) {
test = _b[_c];
_a.push(fs.readFile(test, function(err, code) {
return eval(coffee.compile(code));
}));
}
return _a;
});
})();

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@@ -1,5 +0,0 @@
(function(){
var cholesterol, healthy;
cholesterol = 127;
healthy = (200 > cholesterol) && (cholesterol > 60);
})();

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@@ -1,5 +1,5 @@
(function(){
var date, expensive, mood;
var date, mood;
if (singing) {
mood = greatly_improved;
}
@@ -9,4 +9,4 @@
}
date = friday ? sue : jill;
expensive = expensive || do_the_math();
})();
})();

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@@ -3,4 +3,4 @@
hi = function() {
return [document.title, "Hello JavaScript"].join(": ");
};
})();
})();

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@@ -1,7 +1,6 @@
(function(){
var solipsism, speed;
var solipsism;
if ((typeof mind !== "undefined" && mind !== null) && !(typeof world !== "undefined" && world !== null)) {
solipsism = true;
}
speed = (typeof speed !== "undefined" && speed !== null) ? speed : 140;
})();
})();

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@@ -4,14 +4,10 @@
if (student.excellent_work) {
return "A+";
} else if (student.okay_stuff) {
if (student.tried_hard) {
return "B";
} else {
return "B-";
}
return student.tried_hard ? "B" : "B-";
} else {
return "C";
}
};
eldest = 24 > 21 ? "Liz" : "Ike";
})();
})();

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@@ -1,4 +1,4 @@
(function(){
var one, six, three, two;
six = (one = 1) + (two = 2) + (three = 3);
})();
})();

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@@ -1,12 +1,16 @@
(function(){
var _a, _b, globals, name;
var __hasProp = Object.prototype.hasOwnProperty;
var __a, __b, __c, globals, name, property;
// The first ten global properties.
globals = (function() {
_a = []; _b = window;
for (name in _b) { if (__hasProp.call(_b, name)) {
_a.push(name);
}}
return _a;
}).call(this).slice(0, 10);
})();
globals = ((function() {
__a = window;
__b = [];
for (name in __a) {
if (__a.hasOwnProperty(name)) {
property = __a[name];
__c = name;
__b.push(__c);
}
}
return __b;
})()).slice(0, 10);
})();

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@@ -3,7 +3,7 @@
try {
return nonexistent / undefined;
} catch (error) {
return "And the error is ... " + error;
return "The error is: " + error;
}
}).call(this));
})();
})());
})();

View File

@@ -1,15 +0,0 @@
(function(){
var Account;
Account = function Account(customer, cart) {
this.customer = customer;
this.cart = cart;
return $('.shopping_cart').bind('click', (function(__this) {
var __func = function(event) {
return this.customer.purchase(this.cart);
};
return (function() {
return __func.apply(__this, arguments);
});
})(this));
};
})();

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@@ -6,4 +6,4 @@
cube = function cube(x) {
return square(x) * x;
};
})();
})();

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@@ -1,4 +0,0 @@
(function(){
var html;
html = '<strong>\n cup of coffeescript\n</strong>';
})();

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@@ -1,5 +0,0 @@
(function(){
var author, quote;
author = "Wittgenstein";
quote = "A picture is a fact. -- " + author;
})();

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@@ -1,6 +0,0 @@
(function(){
var dates, sentence, sep;
sentence = "" + (22 / 7) + " is a decent approximation of π";
sep = "[.\\/\\- ]";
dates = (new RegExp("\\d+" + sep + "\\d+" + sep + "\\d+", "g"));
})();

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@@ -1,11 +0,0 @@
(function(){
var _a, city, forecast, temp, weather_report;
weather_report = function weather_report(location) {
// Make an Ajax request to fetch the weather...
return [location, 72, "Mostly Sunny"];
};
_a = weather_report("Berkeley, CA");
city = _a[0];
temp = _a[1];
forecast = _a[2];
})();

View File

@@ -1,17 +1,20 @@
(function(){
var _a, _b, age, ages, child, years_old;
var __hasProp = Object.prototype.hasOwnProperty;
var __a, __b, __c, age, ages, child, years_old;
years_old = {
max: 10,
ida: 9,
tim: 11
};
ages = (function() {
_a = []; _b = years_old;
for (child in _b) { if (__hasProp.call(_b, child)) {
age = _b[child];
_a.push(child + " is " + age);
}}
return _a;
}).call(this);
})();
__a = years_old;
__b = [];
for (child in __a) {
if (__a.hasOwnProperty(child)) {
age = __a[child];
__c = child + " is " + age;
__b.push(__c);
}
}
return __b;
})();
})();

View File

@@ -1,17 +0,0 @@
(function(){
var _a, _b, _c, city, futurists, poet, street;
futurists = {
sculptor: "Umberto Boccioni",
painter: "Vladimir Burliuk",
poet: {
name: "F.T. Marinetti",
address: ["Via Roma 42R", "Bellagio, Italy 22021"]
}
};
_a = futurists;
_b = _a.poet;
poet = _b.name;
_c = _b.address;
street = _c[0];
city = _c[1];
})();

View File

@@ -7,4 +7,4 @@
tim: 11
};
matrix = [1, 0, 1, 0, 0, 1, 1, 1, 0];
})();
})();

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@@ -1,5 +1,5 @@
(function(){
var _a, _b, _c, _d, cubed_list, list, math, num, number, opposite_day, race, square;
var __a, __b, __c, __d, cubed_list, list, math, num, number, opposite_day, race, square;
// Assignment:
number = 42;
opposite_day = true;
@@ -24,7 +24,7 @@
// Splats:
race = function race(winner) {
var runners;
runners = Array.prototype.slice.call(arguments, 1, arguments.length - 0);
runners = Array.prototype.slice.call(arguments, 1);
return print(winner, runners);
};
// Existence:
@@ -33,11 +33,15 @@
}
// Array comprehensions:
cubed_list = (function() {
_a = []; _b = list;
for (_c = 0, _d = _b.length; _c < _d; _c++) {
num = _b[_c];
_a.push(math.cube(num));
__a = list;
__c = [];
for (__b in __a) {
if (__a.hasOwnProperty(__b)) {
num = __a[__b];
__d = math.cube(num);
__c.push(__d);
}
}
return _a;
}).call(this);
})();
return __c;
})();
})();

View File

@@ -1,8 +0,0 @@
(function(){
var _a, and_switch, bait;
bait = 1000;
and_switch = 0;
_a = [and_switch, bait];
bait = _a[0];
and_switch = _a[1];
})();

View File

@@ -1,8 +0,0 @@
(function(){
var _a, close, contents, open, tag;
tag = "<impossible>";
_a = tag.split("");
open = _a[0];
contents = Array.prototype.slice.call(_a, 1, _a.length - 1);
close = _a[_a.length - 1];
})();

View File

@@ -1,5 +0,0 @@
(function(){
String.prototype.dasherize = function dasherize() {
return this.replace(/_/g, "-");
};
})();

View File

@@ -1,21 +1,9 @@
(function(){
var _a, _b, _c, _d, _e, countdown, egg_delivery, num;
countdown = (function() {
_a = []; _d = 10; _e = 1;
for (_c = 0, num = _d; (_d <= _e ? num <= _e : num >= _e); (_d <= _e ? num += 1 : num -= 1), _c++) {
_a.push(num);
}
return _a;
}).call(this);
egg_delivery = function egg_delivery() {
var _f, _g, _h, _i, _j, dozen_eggs, i;
_f = []; _i = 0; _j = eggs.length;
for (_h = 0, i = _i; (_i <= _j ? i < _j : i > _j); (_i <= _j ? i += 12 : i -= 12), _h++) {
_f.push((function() {
dozen_eggs = eggs.slice(i, i + 12);
return deliver(new egg_carton(dozen));
}).call(this));
}
return _f;
};
})();
var __a, __b, __c, __d, __e, dozen_eggs, i;
__d = 0;
__e = eggs.length;
for (__c=0, i=__d; (__d <= __e ? i < __e : i > __e); (__d <= __e ? i += 12 : i -= 12), __c++) {
dozen_eggs = eggs.slice(i, i + 12);
deliver(new egg_carton(dozen));
}
})();

View File

@@ -4,8 +4,7 @@
change_numbers = function change_numbers() {
var new_num;
new_num = -1;
num = 10;
return num;
return num = 10;
};
new_num = change_numbers();
})();
})();

View File

@@ -3,4 +3,4 @@
numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
three_to_six = numbers.slice(3, 6 + 1);
numbers_copy = numbers.slice(0, numbers.length);
})();
})();

View File

@@ -1,4 +0,0 @@
(function(){
var _a;
(_a = lottery.draw_winner()) == undefined ? undefined : _a.address == undefined ? undefined : _a.address.zipcode;
})();

View File

@@ -1,17 +1,16 @@
(function(){
var award_medals, contenders, gold, silver, the_field;
gold = (silver = (the_field = "unknown"));
award_medals = function award_medals(first, second) {
var contenders, gold, medalists, silver, the_field;
gold = silver = the_field = "unknown";
medalists = function medalists(first, second) {
var rest;
rest = Array.prototype.slice.call(arguments, 2, arguments.length - 0);
rest = Array.prototype.slice.call(arguments, 2);
gold = first;
silver = second;
the_field = rest;
return the_field;
return the_field = rest;
};
contenders = ["Michael Phelps", "Liu Xiang", "Yao Ming", "Allyson Felix", "Shawn Johnson", "Roman Sebrle", "Guo Jingjing", "Tyson Gay", "Asafa Powell", "Usain Bolt"];
award_medals.apply(this, contenders);
medalists.apply(this, contenders);
alert("Gold: " + gold);
alert("Silver: " + silver);
alert("The Field: " + the_field);
})();
})();

View File

@@ -2,4 +2,4 @@
var numbers;
numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
numbers.splice.apply(numbers, [3, 6 - 3 + 1].concat([-3, -4, -5, -6]));
})();
})();

View File

@@ -6,4 +6,4 @@ or no money in my purse, and nothing particular \
to interest me on shore, I thought I would sail \
about a little and see the watery part of the \
world...";
})();
})();

View File

@@ -1,30 +1,26 @@
(function(){
var Animal, Horse, Snake, sam, tom;
var __extends = function(child, parent) {
var ctor = function(){ };
ctor.prototype = parent.prototype;
child.__superClass__ = parent.prototype;
child.prototype = new ctor();
child.prototype.constructor = child;
Animal = function Animal() {
};
Animal = function Animal() { };
Animal.prototype.move = function move(meters) {
return alert(this.name + " moved " + meters + "m.");
};
Snake = function Snake(name) {
this.name = name;
return this;
return this.name = name;
};
__extends(Snake, Animal);
Snake.__superClass__ = Animal.prototype;
Snake.prototype = new Animal();
Snake.prototype.constructor = Snake;
Snake.prototype.move = function move() {
alert("Slithering...");
return Snake.__superClass__.move.call(this, 5);
};
Horse = function Horse(name) {
this.name = name;
return this;
return this.name = name;
};
__extends(Horse, Animal);
Horse.__superClass__ = Animal.prototype;
Horse.prototype = new Animal();
Horse.prototype.constructor = Horse;
Horse.prototype.move = function move() {
alert("Galloping...");
return Horse.__superClass__.move.call(this, 45);
@@ -33,4 +29,4 @@
tom = new Horse("Tommy the Palomino");
sam.move();
tom.move();
})();
})();

View File

@@ -1,18 +1,16 @@
(function(){
if (day === "Mon") {
go_to_work();
} else if (day === "Tue") {
if (day === "Tuesday") {
eat_breakfast();
} else if (day === "Wednesday") {
go_to_the_park();
} else if (day === "Thu") {
go_ice_fishing();
} else if (day === "Fri" || day === "Sat") {
} else if (day === "Saturday") {
if (day === bingo_day) {
go_to_bingo();
go_dancing();
}
} else if (day === "Sun") {
} else if (day === "Sunday") {
go_to_church();
} else {
go_to_work();
}
})();
})();

View File

@@ -7,4 +7,4 @@
} finally {
clean_up();
}
})();
})();

View File

@@ -1,22 +1,9 @@
(function(){
var _a, lyrics, num;
// Econ 101
if (this.studying_economics) {
while (supply > demand) {
buy();
}
while (supply < demand) {
sell();
}
while (demand > supply) {
sell();
restock();
}
// Nursery Rhyme
num = 6;
lyrics = (function() {
_a = [];
while (num -= 1) {
_a.push(num + " little monkeys, jumping on the bed. \
One fell out and bumped his head.");
}
return _a;
}).call(this);
})();
while (supply > demand) {
buy();
}
})();

View File

@@ -0,0 +1,616 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<link rel="stylesheet" type="text/css" media="screen,projection,print" href="css/idle.css" />
<title>Underscore.coffee</title>
<style type="text/css">
body {
margin: 0; padding: 0;
}
pre.idle {
font-family: "Monaco", "Consolas", monospace;
font-size: 12px;
}
</style>
</head>
<body>
<pre class="idle"><span class="line-numbers"> 1 </span>
<span class="line-numbers"> 2 </span> <span class="Comment"><span class="Comment">#</span> Underscore.coffee</span>
<span class="line-numbers"> 3 </span> <span class="Comment"><span class="Comment">#</span> (c) 2009 Jeremy Ashkenas, DocumentCloud Inc.</span>
<span class="line-numbers"> 4 </span> <span class="Comment"><span class="Comment">#</span> Underscore is freely distributable under the terms of the MIT license.</span>
<span class="line-numbers"> 5 </span> <span class="Comment"><span class="Comment">#</span> Portions of Underscore are inspired by or borrowed from Prototype.js,</span>
<span class="line-numbers"> 6 </span> <span class="Comment"><span class="Comment">#</span> Oliver Steele's Functional, and John Resig's Micro-Templating.</span>
<span class="line-numbers"> 7 </span> <span class="Comment"><span class="Comment">#</span> For all details and documentation:</span>
<span class="line-numbers"> 8 </span> <span class="Comment"><span class="Comment">#</span> http://documentcloud.github.com/underscore/</span>
<span class="line-numbers"> 9 </span>
<span class="line-numbers"> 10 </span>
<span class="line-numbers"> 11 </span> <span class="Comment"><span class="Comment">#</span> ------------------------- Baseline setup ---------------------------------</span>
<span class="line-numbers"> 12 </span>
<span class="line-numbers"> 13 </span> <span class="Comment"><span class="Comment">#</span> Establish the root object, &quot;window&quot; in the browser, or &quot;global&quot; on the server.</span>
<span class="line-numbers"> 14 </span> root<span class="Keyword">:</span> <span class="Variable">this</span>
<span class="line-numbers"> 15 </span>
<span class="line-numbers"> 16 </span>
<span class="line-numbers"> 17 </span> <span class="Comment"><span class="Comment">#</span> Save the previous value of the &quot;_&quot; variable.</span>
<span class="line-numbers"> 18 </span> previousUnderscore<span class="Keyword">:</span> root._
<span class="line-numbers"> 19 </span>
<span class="line-numbers"> 20 </span>
<span class="line-numbers"> 21 </span> <span class="Comment"><span class="Comment">#</span> If Underscore is called as a function, it returns a wrapped object that</span>
<span class="line-numbers"> 22 </span> <span class="Comment"><span class="Comment">#</span> can be used OO-style. This wrapper holds altered versions of all the</span>
<span class="line-numbers"> 23 </span> <span class="Comment"><span class="Comment">#</span> underscore functions. Wrapped objects may be chained.</span>
<span class="line-numbers"> 24 </span> <span class="FunctionName">wrapper</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 25 </span> <span class="Variable">this</span>._wrapped<span class="Keyword">:</span> obj
<span class="line-numbers"> 26 </span> <span class="Variable">this</span>
<span class="line-numbers"> 27 </span>
<span class="line-numbers"> 28 </span>
<span class="line-numbers"> 29 </span> <span class="Comment"><span class="Comment">#</span> Establish the object that gets thrown to break out of a loop iteration.</span>
<span class="line-numbers"> 30 </span> breaker<span class="Keyword">:</span> <span class="Keyword">if</span> <span class="Keyword">typeof</span>(StopIteration) <span class="Keyword">is</span> <span class="String"><span class="String">'</span>undefined<span class="String">'</span></span> <span class="Keyword">then</span> <span class="String"><span class="String">'</span>__break__<span class="String">'</span></span> <span class="Keyword">else</span> StopIteration
<span class="line-numbers"> 31 </span>
<span class="line-numbers"> 32 </span>
<span class="line-numbers"> 33 </span> <span class="Comment"><span class="Comment">#</span> Create a safe reference to the Underscore object for reference below.</span>
<span class="line-numbers"> 34 </span> _<span class="Keyword">:</span> <span class="FunctionName">root._</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> <span class="Keyword">new</span> <span class="TypeName">wrapper</span>(obj)
<span class="line-numbers"> 35 </span>
<span class="line-numbers"> 36 </span>
<span class="line-numbers"> 37 </span> <span class="Comment"><span class="Comment">#</span> Export the Underscore object for CommonJS.</span>
<span class="line-numbers"> 38 </span> <span class="Keyword">if</span> <span class="Keyword">typeof</span>(exports) <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">'</span>undefined<span class="String">'</span></span> <span class="Keyword">then</span> exports._<span class="Keyword">:</span> _
<span class="line-numbers"> 39 </span>
<span class="line-numbers"> 40 </span>
<span class="line-numbers"> 41 </span> <span class="Comment"><span class="Comment">#</span> Create quick reference variables for speed access to core prototypes.</span>
<span class="line-numbers"> 42 </span> slice<span class="Keyword">:</span> Array.prototype.slice
<span class="line-numbers"> 43 </span> unshift<span class="Keyword">:</span> Array.prototype.unshift
<span class="line-numbers"> 44 </span> toString<span class="Keyword">:</span> Object.prototype.toString
<span class="line-numbers"> 45 </span> hasOwnProperty<span class="Keyword">:</span> Object.prototype.hasOwnProperty
<span class="line-numbers"> 46 </span> propertyIsEnumerable<span class="Keyword">:</span> Object.prototype.propertyIsEnumerable
<span class="line-numbers"> 47 </span>
<span class="line-numbers"> 48 </span>
<span class="line-numbers"> 49 </span> <span class="Comment"><span class="Comment">#</span> Current version.</span>
<span class="line-numbers"> 50 </span> _.VERSION<span class="Keyword">:</span> <span class="String"><span class="String">'</span>0.5.3<span class="String">'</span></span>
<span class="line-numbers"> 51 </span>
<span class="line-numbers"> 52 </span>
<span class="line-numbers"> 53 </span> <span class="Comment"><span class="Comment">#</span> ------------------------ Collection Functions: ---------------------------</span>
<span class="line-numbers"> 54 </span>
<span class="line-numbers"> 55 </span> <span class="Comment"><span class="Comment">#</span> The cornerstone, an each implementation.</span>
<span class="line-numbers"> 56 </span> <span class="Comment"><span class="Comment">#</span> Handles objects implementing forEach, arrays, and raw objects.</span>
<span class="line-numbers"> 57 </span> <span class="FunctionName">_.each</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 58 </span> index<span class="Keyword">:</span> <span class="Number">0</span>
<span class="line-numbers"> 59 </span> <span class="Keyword">try</span>
<span class="line-numbers"> 60 </span> <span class="Keyword">return</span> obj.forEach(iterator, context) <span class="Keyword">if</span> obj.forEach
<span class="line-numbers"> 61 </span> <span class="Keyword">if</span> _.isArray(obj) <span class="Keyword">or</span> _.isArguments(obj)
<span class="line-numbers"> 62 </span> <span class="Keyword">return</span> iterator.call(context, obj[i], i, obj) <span class="Keyword">for</span> i <span class="Keyword">in</span> [<span class="Number">0</span>...obj.length]
<span class="line-numbers"> 63 </span> iterator.call(context, val, key, obj) <span class="Keyword">for</span> val, key <span class="Keyword">in</span> obj
<span class="line-numbers"> 64 </span> <span class="Keyword">catch</span> e
<span class="line-numbers"> 65 </span> <span class="Keyword">throw</span> e <span class="Keyword">if</span> e <span class="Keyword">isnt</span> breaker
<span class="line-numbers"> 66 </span> obj
<span class="line-numbers"> 67 </span>
<span class="line-numbers"> 68 </span>
<span class="line-numbers"> 69 </span> <span class="Comment"><span class="Comment">#</span> Return the results of applying the iterator to each element. Use JavaScript</span>
<span class="line-numbers"> 70 </span> <span class="Comment"><span class="Comment">#</span> 1.6's version of map, if possible.</span>
<span class="line-numbers"> 71 </span> <span class="FunctionName">_.map</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 72 </span> <span class="Keyword">return</span> obj.map(iterator, context) <span class="Keyword">if</span> (obj <span class="Keyword">and</span> _.isFunction(obj.map))
<span class="line-numbers"> 73 </span> results<span class="Keyword">:</span> []
<span class="line-numbers"> 74 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 75 </span> results.push(iterator.call(context, value, index, list))
<span class="line-numbers"> 76 </span> results
<span class="line-numbers"> 77 </span>
<span class="line-numbers"> 78 </span>
<span class="line-numbers"> 79 </span> <span class="Comment"><span class="Comment">#</span> Reduce builds up a single result from a list of values. Also known as</span>
<span class="line-numbers"> 80 </span> <span class="Comment"><span class="Comment">#</span> inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.</span>
<span class="line-numbers"> 81 </span> <span class="FunctionName">_.reduce</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, memo, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 82 </span> <span class="Keyword">return</span> obj.reduce(_.bind(iterator, context), memo) <span class="Keyword">if</span> (obj <span class="Keyword">and</span> _.isFunction(obj.reduce))
<span class="line-numbers"> 83 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 84 </span> memo<span class="Keyword">:</span> iterator.call(context, memo, value, index, list)
<span class="line-numbers"> 85 </span> memo
<span class="line-numbers"> 86 </span>
<span class="line-numbers"> 87 </span>
<span class="line-numbers"> 88 </span> <span class="Comment"><span class="Comment">#</span> The right-associative version of reduce, also known as foldr. Uses</span>
<span class="line-numbers"> 89 </span> <span class="Comment"><span class="Comment">#</span> JavaScript 1.8's version of reduceRight, if available.</span>
<span class="line-numbers"> 90 </span> <span class="FunctionName">_.reduceRight</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, memo, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 91 </span> <span class="Keyword">return</span> obj.reduceRight(_.bind(iterator, context), memo) <span class="Keyword">if</span> (obj <span class="Keyword">and</span> _.isFunction(obj.reduceRight))
<span class="line-numbers"> 92 </span> _.each(_.clone(_.toArray(obj)).reverse())<span class="FunctionArgument"> value, index </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 93 </span> memo<span class="Keyword">:</span> iterator.call(context, memo, value, index, obj)
<span class="line-numbers"> 94 </span> memo
<span class="line-numbers"> 95 </span>
<span class="line-numbers"> 96 </span>
<span class="line-numbers"> 97 </span> <span class="Comment"><span class="Comment">#</span> Return the first value which passes a truth test.</span>
<span class="line-numbers"> 98 </span> <span class="FunctionName">_.detect</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 99 </span> result<span class="Keyword">:</span> <span class="BuiltInConstant">null</span>
<span class="line-numbers"> 100 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 101 </span> <span class="Keyword">if</span> iterator.call(context, value, index, list)
<span class="line-numbers"> 102 </span> result<span class="Keyword">:</span> value
<span class="line-numbers"> 103 </span> _.breakLoop()
<span class="line-numbers"> 104 </span> result
<span class="line-numbers"> 105 </span>
<span class="line-numbers"> 106 </span>
<span class="line-numbers"> 107 </span> <span class="Comment"><span class="Comment">#</span> Return all the elements that pass a truth test. Use JavaScript 1.6's</span>
<span class="line-numbers"> 108 </span> <span class="Comment"><span class="Comment">#</span> filter(), if it exists.</span>
<span class="line-numbers"> 109 </span> <span class="FunctionName">_.select</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 110 </span> <span class="Keyword">if</span> obj <span class="Keyword">and</span> _.isFunction(obj.filter) <span class="Keyword">then</span> <span class="Keyword">return</span> obj.filter(iterator, context)
<span class="line-numbers"> 111 </span> results<span class="Keyword">:</span> []
<span class="line-numbers"> 112 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 113 </span> results.push(value) <span class="Keyword">if</span> iterator.call(context, value, index, list)
<span class="line-numbers"> 114 </span> results
<span class="line-numbers"> 115 </span>
<span class="line-numbers"> 116 </span>
<span class="line-numbers"> 117 </span> <span class="Comment"><span class="Comment">#</span> Return all the elements for which a truth test fails.</span>
<span class="line-numbers"> 118 </span> <span class="FunctionName">_.reject</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 119 </span> results<span class="Keyword">:</span> []
<span class="line-numbers"> 120 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 121 </span> results.push(value) <span class="Keyword">if</span> <span class="Keyword">not</span> iterator.call(context, value, index, list)
<span class="line-numbers"> 122 </span> results
<span class="line-numbers"> 123 </span>
<span class="line-numbers"> 124 </span>
<span class="line-numbers"> 125 </span> <span class="Comment"><span class="Comment">#</span> Determine whether all of the elements match a truth test. Delegate to</span>
<span class="line-numbers"> 126 </span> <span class="Comment"><span class="Comment">#</span> JavaScript 1.6's every(), if it is present.</span>
<span class="line-numbers"> 127 </span> <span class="FunctionName">_.all</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 128 </span> iterator <span class="Keyword">||</span><span class="Keyword">=</span> _.identity
<span class="line-numbers"> 129 </span> <span class="Keyword">return</span> obj.every(iterator, context) <span class="Keyword">if</span> obj <span class="Keyword">and</span> _.isFunction(obj.every)
<span class="line-numbers"> 130 </span> result<span class="Keyword">:</span> <span class="BuiltInConstant">true</span>
<span class="line-numbers"> 131 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 132 </span> _.breakLoop() <span class="Keyword">unless</span> (result<span class="Keyword">:</span> result <span class="Keyword">and</span> iterator.call(context, value, index, list))
<span class="line-numbers"> 133 </span> result
<span class="line-numbers"> 134 </span>
<span class="line-numbers"> 135 </span>
<span class="line-numbers"> 136 </span> <span class="Comment"><span class="Comment">#</span> Determine if at least one element in the object matches a truth test. Use</span>
<span class="line-numbers"> 137 </span> <span class="Comment"><span class="Comment">#</span> JavaScript 1.6's some(), if it exists.</span>
<span class="line-numbers"> 138 </span> <span class="FunctionName">_.any</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 139 </span> iterator <span class="Keyword">||</span><span class="Keyword">=</span> _.identity
<span class="line-numbers"> 140 </span> <span class="Keyword">return</span> obj.some(iterator, context) <span class="Keyword">if</span> obj <span class="Keyword">and</span> _.isFunction(obj.some)
<span class="line-numbers"> 141 </span> result<span class="Keyword">:</span> <span class="BuiltInConstant">false</span>
<span class="line-numbers"> 142 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 143 </span> _.breakLoop() <span class="Keyword">if</span> (result<span class="Keyword">:</span> iterator.call(context, value, index, list))
<span class="line-numbers"> 144 </span> result
<span class="line-numbers"> 145 </span>
<span class="line-numbers"> 146 </span>
<span class="line-numbers"> 147 </span> <span class="Comment"><span class="Comment">#</span> Determine if a given value is included in the array or object,</span>
<span class="line-numbers"> 148 </span> <span class="Comment"><span class="Comment">#</span> based on '==='.</span>
<span class="line-numbers"> 149 </span> <span class="FunctionName">_.include</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, target</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 150 </span> <span class="Keyword">return</span> _.indexOf(obj, target) <span class="Keyword">isnt</span> <span class="Keyword">-</span><span class="Number">1</span> <span class="Keyword">if</span> _.isArray(obj)
<span class="line-numbers"> 151 </span> <span class="Keyword">for</span> val <span class="Keyword">in</span> obj
<span class="line-numbers"> 152 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> val <span class="Keyword">is</span> target
<span class="line-numbers"> 153 </span> <span class="BuiltInConstant">false</span>
<span class="line-numbers"> 154 </span>
<span class="line-numbers"> 155 </span>
<span class="line-numbers"> 156 </span> <span class="Comment"><span class="Comment">#</span> Invoke a method with arguments on every item in a collection.</span>
<span class="line-numbers"> 157 </span> <span class="FunctionName">_.invoke</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, method</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 158 </span> args<span class="Keyword">:</span> _.rest(arguments, <span class="Number">2</span>)
<span class="line-numbers"> 159 </span> (<span class="Keyword">if</span> method <span class="Keyword">then</span> val[method] <span class="Keyword">else</span> val).apply(val, args) <span class="Keyword">for</span> val <span class="Keyword">in</span> obj
<span class="line-numbers"> 160 </span>
<span class="line-numbers"> 161 </span>
<span class="line-numbers"> 162 </span> <span class="Comment"><span class="Comment">#</span> Convenience version of a common use case of map: fetching a property.</span>
<span class="line-numbers"> 163 </span> <span class="FunctionName">_.pluck</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, key</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 164 </span> _.map(obj, (<span class="FunctionArgument">val </span><span class="Storage">=&gt;</span> val[key]))
<span class="line-numbers"> 165 </span>
<span class="line-numbers"> 166 </span>
<span class="line-numbers"> 167 </span> <span class="Comment"><span class="Comment">#</span> Return the maximum item or (item-based computation).</span>
<span class="line-numbers"> 168 </span> <span class="FunctionName">_.max</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 169 </span> <span class="Keyword">return</span> Math.max.apply(Math, obj) <span class="Keyword">if</span> <span class="Keyword">not</span> iterator <span class="Keyword">and</span> _.isArray(obj)
<span class="line-numbers"> 170 </span> result<span class="Keyword">:</span> {computed<span class="Keyword">:</span> <span class="Keyword">-</span><span class="BuiltInConstant">Infinity</span>}
<span class="line-numbers"> 171 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 172 </span> computed<span class="Keyword">:</span> <span class="Keyword">if</span> iterator <span class="Keyword">then</span> iterator.call(context, value, index, list) <span class="Keyword">else</span> value
<span class="line-numbers"> 173 </span> computed <span class="Keyword">&gt;=</span> result.computed <span class="Keyword">and</span> (result<span class="Keyword">:</span> {value<span class="Keyword">:</span> value, computed<span class="Keyword">:</span> computed})
<span class="line-numbers"> 174 </span> result.value
<span class="line-numbers"> 175 </span>
<span class="line-numbers"> 176 </span>
<span class="line-numbers"> 177 </span> <span class="Comment"><span class="Comment">#</span> Return the minimum element (or element-based computation).</span>
<span class="line-numbers"> 178 </span> <span class="FunctionName">_.min</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 179 </span> <span class="Keyword">return</span> Math.min.apply(Math, obj) <span class="Keyword">if</span> <span class="Keyword">not</span> iterator <span class="Keyword">and</span> _.isArray(obj)
<span class="line-numbers"> 180 </span> result<span class="Keyword">:</span> {computed<span class="Keyword">:</span> <span class="BuiltInConstant">Infinity</span>}
<span class="line-numbers"> 181 </span> _.each(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 182 </span> computed<span class="Keyword">:</span> <span class="Keyword">if</span> iterator <span class="Keyword">then</span> iterator.call(context, value, index, list) <span class="Keyword">else</span> value
<span class="line-numbers"> 183 </span> computed <span class="Keyword">&lt;</span> result.computed <span class="Keyword">and</span> (result<span class="Keyword">:</span> {value<span class="Keyword">:</span> value, computed<span class="Keyword">:</span> computed})
<span class="line-numbers"> 184 </span> result.value
<span class="line-numbers"> 185 </span>
<span class="line-numbers"> 186 </span>
<span class="line-numbers"> 187 </span> <span class="Comment"><span class="Comment">#</span> Sort the object's values by a criteria produced by an iterator.</span>
<span class="line-numbers"> 188 </span> <span class="FunctionName">_.sortBy</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, iterator, context</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 189 </span> _.pluck(((_.map(obj)<span class="FunctionArgument"> value, index, list </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 190 </span> {value<span class="Keyword">:</span> value, criteria<span class="Keyword">:</span> iterator.call(context, value, index, list)}
<span class="line-numbers"> 191 </span> ).sort()<span class="FunctionArgument"> left, right </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 192 </span> a<span class="Keyword">:</span> left.criteria; b<span class="Keyword">:</span> right.criteria
<span class="line-numbers"> 193 </span> <span class="Keyword">if</span> a <span class="Keyword">&lt;</span> b <span class="Keyword">then</span> <span class="Keyword">-</span><span class="Number">1</span> <span class="Keyword">else</span> <span class="Keyword">if</span> a <span class="Keyword">&gt;</span> b <span class="Keyword">then</span> <span class="Number">1</span> <span class="Keyword">else</span> <span class="Number">0</span>
<span class="line-numbers"> 194 </span> ), <span class="String"><span class="String">'</span>value<span class="String">'</span></span>)
<span class="line-numbers"> 195 </span>
<span class="line-numbers"> 196 </span>
<span class="line-numbers"> 197 </span> <span class="Comment"><span class="Comment">#</span> Use a comparator function to figure out at what index an object should</span>
<span class="line-numbers"> 198 </span> <span class="Comment"><span class="Comment">#</span> be inserted so as to maintain order. Uses binary search.</span>
<span class="line-numbers"> 199 </span> <span class="FunctionName">_.sortedIndex</span><span class="Keyword">:</span> <span class="FunctionArgument">array, obj, iterator</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 200 </span> iterator <span class="Keyword">||</span><span class="Keyword">=</span> _.identity
<span class="line-numbers"> 201 </span> low<span class="Keyword">:</span> <span class="Number">0</span>; high<span class="Keyword">:</span> array.length
<span class="line-numbers"> 202 </span> <span class="Keyword">while</span> low <span class="Keyword">&lt;</span> high
<span class="line-numbers"> 203 </span> mid<span class="Keyword">:</span> (low <span class="Keyword">+</span> high) <span class="Keyword">&gt;</span><span class="Keyword">&gt;</span> <span class="Number">1</span>
<span class="line-numbers"> 204 </span> <span class="Keyword">if</span> iterator(array[mid]) <span class="Keyword">&lt;</span> iterator(obj) <span class="Keyword">then</span> low<span class="Keyword">:</span> mid <span class="Keyword">+</span> <span class="Number">1</span> <span class="Keyword">else</span> high<span class="Keyword">:</span> mid
<span class="line-numbers"> 205 </span> low
<span class="line-numbers"> 206 </span>
<span class="line-numbers"> 207 </span>
<span class="line-numbers"> 208 </span> <span class="Comment"><span class="Comment">#</span> Convert anything iterable into a real, live array.</span>
<span class="line-numbers"> 209 </span> <span class="FunctionName">_.toArray</span><span class="Keyword">:</span> <span class="FunctionArgument">iterable</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 210 </span> <span class="Keyword">return</span> [] <span class="Keyword">if</span> (<span class="Keyword">!</span>iterable)
<span class="line-numbers"> 211 </span> <span class="Keyword">return</span> iterable.toArray() <span class="Keyword">if</span> (iterable.toArray)
<span class="line-numbers"> 212 </span> <span class="Keyword">return</span> iterable <span class="Keyword">if</span> (_.isArray(iterable))
<span class="line-numbers"> 213 </span> <span class="Keyword">return</span> slice.call(iterable) <span class="Keyword">if</span> (_.isArguments(iterable))
<span class="line-numbers"> 214 </span> _.values(iterable)
<span class="line-numbers"> 215 </span>
<span class="line-numbers"> 216 </span>
<span class="line-numbers"> 217 </span> <span class="Comment"><span class="Comment">#</span> Return the number of elements in an object.</span>
<span class="line-numbers"> 218 </span> <span class="FunctionName">_.size</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> _.toArray(obj).length
<span class="line-numbers"> 219 </span>
<span class="line-numbers"> 220 </span>
<span class="line-numbers"> 221 </span> <span class="Comment"><span class="Comment">#</span> -------------------------- Array Functions: ------------------------------</span>
<span class="line-numbers"> 222 </span>
<span class="line-numbers"> 223 </span> <span class="Comment"><span class="Comment">#</span> Get the first element of an array. Passing &quot;n&quot; will return the first N</span>
<span class="line-numbers"> 224 </span> <span class="Comment"><span class="Comment">#</span> values in the array. Aliased as &quot;head&quot;. The &quot;guard&quot; check allows it to work</span>
<span class="line-numbers"> 225 </span> <span class="Comment"><span class="Comment">#</span> with _.map.</span>
<span class="line-numbers"> 226 </span> <span class="FunctionName">_.first</span><span class="Keyword">:</span> <span class="FunctionArgument">array, n, guard</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 227 </span> <span class="Keyword">if</span> n <span class="Keyword">and</span> <span class="Keyword">not</span> guard <span class="Keyword">then</span> slice.call(array, <span class="Number">0</span>, n) <span class="Keyword">else</span> array[<span class="Number">0</span>]
<span class="line-numbers"> 228 </span>
<span class="line-numbers"> 229 </span>
<span class="line-numbers"> 230 </span> <span class="Comment"><span class="Comment">#</span> Returns everything but the first entry of the array. Aliased as &quot;tail&quot;.</span>
<span class="line-numbers"> 231 </span> <span class="Comment"><span class="Comment">#</span> Especially useful on the arguments object. Passing an &quot;index&quot; will return</span>
<span class="line-numbers"> 232 </span> <span class="Comment"><span class="Comment">#</span> the rest of the values in the array from that index onward. The &quot;guard&quot;</span>
<span class="line-numbers"> 233 </span> <span class="Comment"><span class="Comment">#</span> check allows it to work with _.map.</span>
<span class="line-numbers"> 234 </span> <span class="FunctionName">_.rest</span><span class="Keyword">:</span> <span class="FunctionArgument">array, index, guard</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 235 </span> slice.call(array, <span class="Keyword">if</span> _.isUndefined(index) <span class="Keyword">or</span> guard <span class="Keyword">then</span> <span class="Number">1</span> <span class="Keyword">else</span> index)
<span class="line-numbers"> 236 </span>
<span class="line-numbers"> 237 </span>
<span class="line-numbers"> 238 </span> <span class="Comment"><span class="Comment">#</span> Get the last element of an array.</span>
<span class="line-numbers"> 239 </span> <span class="FunctionName">_.last</span><span class="Keyword">:</span> <span class="FunctionArgument">array</span> <span class="Storage">=&gt;</span> array[array.length <span class="Keyword">-</span> <span class="Number">1</span>]
<span class="line-numbers"> 240 </span>
<span class="line-numbers"> 241 </span>
<span class="line-numbers"> 242 </span> <span class="Comment"><span class="Comment">#</span> Trim out all falsy values from an array.</span>
<span class="line-numbers"> 243 </span> <span class="FunctionName">_.compact</span><span class="Keyword">:</span> <span class="FunctionArgument">array</span> <span class="Storage">=&gt;</span> array[i] <span class="Keyword">for</span> i <span class="Keyword">in</span> [<span class="Number">0</span>...array.length] <span class="Keyword">when</span> array[i]
<span class="line-numbers"> 244 </span>
<span class="line-numbers"> 245 </span>
<span class="line-numbers"> 246 </span> <span class="Comment"><span class="Comment">#</span> Return a completely flattened version of an array.</span>
<span class="line-numbers"> 247 </span> <span class="FunctionName">_.flatten</span><span class="Keyword">:</span> <span class="FunctionArgument">array</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 248 </span> _.reduce(array, [])<span class="FunctionArgument"> memo, value </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 249 </span> <span class="Keyword">return</span> memo.concat(_.flatten(value)) <span class="Keyword">if</span> _.isArray(value)
<span class="line-numbers"> 250 </span> memo.push(value)
<span class="line-numbers"> 251 </span> memo
<span class="line-numbers"> 252 </span>
<span class="line-numbers"> 253 </span>
<span class="line-numbers"> 254 </span> <span class="Comment"><span class="Comment">#</span> Return a version of the array that does not contain the specified value(s).</span>
<span class="line-numbers"> 255 </span> <span class="FunctionName">_.without</span><span class="Keyword">:</span> <span class="FunctionArgument">array</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 256 </span> values<span class="Keyword">:</span> _.rest(arguments)
<span class="line-numbers"> 257 </span> val <span class="Keyword">for</span> val <span class="Keyword">in</span> _.toArray(array) <span class="Keyword">when</span> <span class="Keyword">not</span> _.include(values, val)
<span class="line-numbers"> 258 </span>
<span class="line-numbers"> 259 </span>
<span class="line-numbers"> 260 </span> <span class="Comment"><span class="Comment">#</span> Produce a duplicate-free version of the array. If the array has already</span>
<span class="line-numbers"> 261 </span> <span class="Comment"><span class="Comment">#</span> been sorted, you have the option of using a faster algorithm.</span>
<span class="line-numbers"> 262 </span> <span class="FunctionName">_.uniq</span><span class="Keyword">:</span> <span class="FunctionArgument">array, isSorted</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 263 </span> memo<span class="Keyword">:</span> []
<span class="line-numbers"> 264 </span> <span class="Keyword">for</span> el, i <span class="Keyword">in</span> _.toArray(array)
<span class="line-numbers"> 265 </span> memo.push(el) <span class="Keyword">if</span> i <span class="Keyword">is</span> <span class="Number">0</span> <span class="Keyword">||</span> (<span class="Keyword">if</span> isSorted <span class="Keyword">is</span> <span class="BuiltInConstant">true</span> <span class="Keyword">then</span> _.last(memo) <span class="Keyword">isnt</span> el <span class="Keyword">else</span> <span class="Keyword">not</span> _.include(memo, el))
<span class="line-numbers"> 266 </span> memo
<span class="line-numbers"> 267 </span>
<span class="line-numbers"> 268 </span>
<span class="line-numbers"> 269 </span> <span class="Comment"><span class="Comment">#</span> Produce an array that contains every item shared between all the</span>
<span class="line-numbers"> 270 </span> <span class="Comment"><span class="Comment">#</span> passed-in arrays.</span>
<span class="line-numbers"> 271 </span> <span class="FunctionName">_.intersect</span><span class="Keyword">:</span> <span class="FunctionArgument">array</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 272 </span> rest<span class="Keyword">:</span> _.rest(arguments)
<span class="line-numbers"> 273 </span> _.select(_.uniq(array))<span class="FunctionArgument"> item </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 274 </span> _.all(rest)<span class="FunctionArgument"> other </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 275 </span> _.indexOf(other, item) <span class="Keyword">&gt;=</span> <span class="Number">0</span>
<span class="line-numbers"> 276 </span>
<span class="line-numbers"> 277 </span>
<span class="line-numbers"> 278 </span> <span class="Comment"><span class="Comment">#</span> Zip together multiple lists into a single array -- elements that share</span>
<span class="line-numbers"> 279 </span> <span class="Comment"><span class="Comment">#</span> an index go together.</span>
<span class="line-numbers"> 280 </span> <span class="FunctionName">_.zip</span><span class="Keyword">:</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 281 </span> args<span class="Keyword">:</span> _.toArray(arguments)
<span class="line-numbers"> 282 </span> length<span class="Keyword">:</span> _.max(_.pluck(args, <span class="String"><span class="String">'</span>length<span class="String">'</span></span>))
<span class="line-numbers"> 283 </span> results<span class="Keyword">:</span> <span class="Keyword">new</span> <span class="TypeName">Array</span>(length)
<span class="line-numbers"> 284 </span> <span class="Keyword">for</span> i <span class="Keyword">in</span> [<span class="Number">0</span>...length]
<span class="line-numbers"> 285 </span> results[i]<span class="Keyword">:</span> _.pluck(args, String(i))
<span class="line-numbers"> 286 </span> results
<span class="line-numbers"> 287 </span>
<span class="line-numbers"> 288 </span>
<span class="line-numbers"> 289 </span> <span class="Comment"><span class="Comment">#</span> If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),</span>
<span class="line-numbers"> 290 </span> <span class="Comment"><span class="Comment">#</span> we need this function. Return the position of the first occurence of an</span>
<span class="line-numbers"> 291 </span> <span class="Comment"><span class="Comment">#</span> item in an array, or -1 if the item is not included in the array.</span>
<span class="line-numbers"> 292 </span> <span class="FunctionName">_.indexOf</span><span class="Keyword">:</span> <span class="FunctionArgument">array, item</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 293 </span> <span class="Keyword">return</span> array.indexOf(item) <span class="Keyword">if</span> array.indexOf
<span class="line-numbers"> 294 </span> i<span class="Keyword">:</span> <span class="Number">0</span>; l<span class="Keyword">:</span> array.length
<span class="line-numbers"> 295 </span> <span class="Keyword">while</span> l <span class="Keyword">-</span> i
<span class="line-numbers"> 296 </span> <span class="Keyword">if</span> array[i] <span class="Keyword">is</span> item <span class="Keyword">then</span> <span class="Keyword">return</span> i <span class="Keyword">else</span> i<span class="Keyword">++</span>
<span class="line-numbers"> 297 </span> <span class="Keyword">-</span><span class="Number">1</span>
<span class="line-numbers"> 298 </span>
<span class="line-numbers"> 299 </span>
<span class="line-numbers"> 300 </span> <span class="Comment"><span class="Comment">#</span> Provide JavaScript 1.6's lastIndexOf, delegating to the native function,</span>
<span class="line-numbers"> 301 </span> <span class="Comment"><span class="Comment">#</span> if possible.</span>
<span class="line-numbers"> 302 </span> <span class="FunctionName">_.lastIndexOf</span><span class="Keyword">:</span> <span class="FunctionArgument">array, item</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 303 </span> <span class="Keyword">return</span> array.lastIndexOf(item) <span class="Keyword">if</span> array.lastIndexOf
<span class="line-numbers"> 304 </span> i<span class="Keyword">:</span> array.length
<span class="line-numbers"> 305 </span> <span class="Keyword">while</span> i
<span class="line-numbers"> 306 </span> <span class="Keyword">if</span> array[i] <span class="Keyword">is</span> item <span class="Keyword">then</span> <span class="Keyword">return</span> i <span class="Keyword">else</span> i<span class="Keyword">--</span>
<span class="line-numbers"> 307 </span> <span class="Keyword">-</span><span class="Number">1</span>
<span class="line-numbers"> 308 </span>
<span class="line-numbers"> 309 </span>
<span class="line-numbers"> 310 </span> <span class="Comment"><span class="Comment">#</span> Generate an integer Array containing an arithmetic progression. A port of</span>
<span class="line-numbers"> 311 </span> <span class="Comment"><span class="Comment">#</span> the native Python range() function. See:</span>
<span class="line-numbers"> 312 </span> <span class="Comment"><span class="Comment">#</span> http://docs.python.org/library/functions.html#range</span>
<span class="line-numbers"> 313 </span> <span class="FunctionName">_.range</span><span class="Keyword">:</span> <span class="FunctionArgument">start, stop, step</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 314 </span> a<span class="Keyword">:</span> _.toArray(arguments)
<span class="line-numbers"> 315 </span> solo<span class="Keyword">:</span> a.length <span class="Keyword">&lt;=</span> <span class="Number">1</span>
<span class="line-numbers"> 316 </span> i<span class="Keyword">:</span> start<span class="Keyword">:</span> <span class="Keyword">if</span> solo <span class="Keyword">then</span> <span class="Number">0</span> <span class="Keyword">else</span> a[<span class="Number">0</span>];
<span class="line-numbers"> 317 </span> stop<span class="Keyword">:</span> <span class="Keyword">if</span> solo <span class="Keyword">then</span> a[<span class="Number">0</span>] <span class="Keyword">else</span> a[<span class="Number">1</span>];
<span class="line-numbers"> 318 </span> step<span class="Keyword">:</span> a[<span class="Number">2</span>] <span class="Keyword">or</span> <span class="Number">1</span>
<span class="line-numbers"> 319 </span> len<span class="Keyword">:</span> Math.ceil((stop <span class="Keyword">-</span> start) <span class="Keyword">/</span> step)
<span class="line-numbers"> 320 </span> <span class="Keyword">return</span> [] <span class="Keyword">if</span> len <span class="Keyword">&lt;=</span> <span class="Number">0</span>
<span class="line-numbers"> 321 </span> range<span class="Keyword">:</span> <span class="Keyword">new</span> <span class="TypeName">Array</span>(len)
<span class="line-numbers"> 322 </span> idx<span class="Keyword">:</span> <span class="Number">0</span>
<span class="line-numbers"> 323 </span> <span class="Keyword">while</span> <span class="BuiltInConstant">true</span>
<span class="line-numbers"> 324 </span> <span class="Keyword">return</span> range <span class="Keyword">if</span> (<span class="Keyword">if</span> step <span class="Keyword">&gt;</span> <span class="Number">0</span> <span class="Keyword">then</span> i <span class="Keyword">-</span> stop <span class="Keyword">else</span> stop <span class="Keyword">-</span> i) <span class="Keyword">&gt;=</span> <span class="Number">0</span>
<span class="line-numbers"> 325 </span> range[idx]<span class="Keyword">:</span> i
<span class="line-numbers"> 326 </span> idx<span class="Keyword">++</span>
<span class="line-numbers"> 327 </span> i<span class="Keyword">+</span><span class="Keyword">=</span> step
<span class="line-numbers"> 328 </span>
<span class="line-numbers"> 329 </span>
<span class="line-numbers"> 330 </span> <span class="Comment"><span class="Comment">#</span> ----------------------- Function Functions: -----------------------------</span>
<span class="line-numbers"> 331 </span>
<span class="line-numbers"> 332 </span> <span class="Comment"><span class="Comment">#</span> Create a function bound to a given object (assigning 'this', and arguments,</span>
<span class="line-numbers"> 333 </span> <span class="Comment"><span class="Comment">#</span> optionally). Binding with arguments is also known as 'curry'.</span>
<span class="line-numbers"> 334 </span> <span class="FunctionName">_.bind</span><span class="Keyword">:</span> <span class="FunctionArgument">func, obj</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 335 </span> args<span class="Keyword">:</span> _.rest(arguments, <span class="Number">2</span>)
<span class="line-numbers"> 336 </span> <span class="FunctionArgument"> </span><span class="Storage">=&gt;</span> func.apply(obj <span class="Keyword">or</span> root, args.concat(_.toArray(arguments)))
<span class="line-numbers"> 337 </span>
<span class="line-numbers"> 338 </span>
<span class="line-numbers"> 339 </span> <span class="Comment"><span class="Comment">#</span> Bind all of an object's methods to that object. Useful for ensuring that</span>
<span class="line-numbers"> 340 </span> <span class="Comment"><span class="Comment">#</span> all callbacks defined on an object belong to it.</span>
<span class="line-numbers"> 341 </span> <span class="FunctionName">_.bindAll</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 342 </span> funcs<span class="Keyword">:</span> <span class="Keyword">if</span> arguments.length <span class="Keyword">&gt;</span> <span class="Number">1</span> <span class="Keyword">then</span> _.rest(arguments) <span class="Keyword">else</span> _.functions(obj)
<span class="line-numbers"> 343 </span> _.each(funcs, (<span class="FunctionArgument">f </span><span class="Storage">=&gt;</span> obj[f]<span class="Keyword">:</span> _.bind(obj[f], obj)))
<span class="line-numbers"> 344 </span> obj
<span class="line-numbers"> 345 </span>
<span class="line-numbers"> 346 </span>
<span class="line-numbers"> 347 </span> <span class="Comment"><span class="Comment">#</span> Delays a function for the given number of milliseconds, and then calls</span>
<span class="line-numbers"> 348 </span> <span class="Comment"><span class="Comment">#</span> it with the arguments supplied.</span>
<span class="line-numbers"> 349 </span> <span class="FunctionName">_.delay</span><span class="Keyword">:</span> <span class="FunctionArgument">func, wait</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 350 </span> args<span class="Keyword">:</span> _.rest(arguments, <span class="Number">2</span>)
<span class="line-numbers"> 351 </span> setTimeout((<span class="Storage">=&gt;</span> func.apply(func, args)), wait)
<span class="line-numbers"> 352 </span>
<span class="line-numbers"> 353 </span>
<span class="line-numbers"> 354 </span> <span class="Comment"><span class="Comment">#</span> Defers a function, scheduling it to run after the current call stack has</span>
<span class="line-numbers"> 355 </span> <span class="Comment"><span class="Comment">#</span> cleared.</span>
<span class="line-numbers"> 356 </span> <span class="FunctionName">_.defer</span><span class="Keyword">:</span> <span class="FunctionArgument">func</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 357 </span> _.delay.apply(_, [func, <span class="Number">1</span>].concat(_.rest(arguments)))
<span class="line-numbers"> 358 </span>
<span class="line-numbers"> 359 </span>
<span class="line-numbers"> 360 </span> <span class="Comment"><span class="Comment">#</span> Returns the first function passed as an argument to the second,</span>
<span class="line-numbers"> 361 </span> <span class="Comment"><span class="Comment">#</span> allowing you to adjust arguments, run code before and after, and</span>
<span class="line-numbers"> 362 </span> <span class="Comment"><span class="Comment">#</span> conditionally execute the original function.</span>
<span class="line-numbers"> 363 </span> <span class="FunctionName">_.wrap</span><span class="Keyword">:</span> <span class="FunctionArgument">func, wrapper</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 364 </span> <span class="FunctionArgument"> </span><span class="Storage">=&gt;</span> wrapper.apply(wrapper, [func].concat(_.toArray(arguments)))
<span class="line-numbers"> 365 </span>
<span class="line-numbers"> 366 </span>
<span class="line-numbers"> 367 </span> <span class="Comment"><span class="Comment">#</span> Returns a function that is the composition of a list of functions, each</span>
<span class="line-numbers"> 368 </span> <span class="Comment"><span class="Comment">#</span> consuming the return value of the function that follows.</span>
<span class="line-numbers"> 369 </span> <span class="FunctionName">_.compose</span><span class="Keyword">:</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 370 </span> funcs<span class="Keyword">:</span> _.toArray(arguments)
<span class="line-numbers"> 371 </span> <span class="FunctionArgument"> </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 372 </span> args<span class="Keyword">:</span> _.toArray(arguments)
<span class="line-numbers"> 373 </span> <span class="Keyword">for</span> i <span class="Keyword">in</span> [(funcs.length <span class="Keyword">-</span> <span class="Number">1</span>)..<span class="Number">0</span>]
<span class="line-numbers"> 374 </span> args<span class="Keyword">:</span> [funcs[i].apply(<span class="Variable">this</span>, args)]
<span class="line-numbers"> 375 </span> args[<span class="Number">0</span>]
<span class="line-numbers"> 376 </span>
<span class="line-numbers"> 377 </span>
<span class="line-numbers"> 378 </span> <span class="Comment"><span class="Comment">#</span> ------------------------- Object Functions: ----------------------------</span>
<span class="line-numbers"> 379 </span>
<span class="line-numbers"> 380 </span> <span class="Comment"><span class="Comment">#</span> Retrieve the names of an object's properties.</span>
<span class="line-numbers"> 381 </span> <span class="FunctionName">_.keys</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 382 </span> <span class="Keyword">return</span> _.range(<span class="Number">0</span>, obj.length) <span class="Keyword">if</span> _.isArray(obj)
<span class="line-numbers"> 383 </span> key <span class="Keyword">for</span> val, key <span class="Keyword">in</span> obj
<span class="line-numbers"> 384 </span>
<span class="line-numbers"> 385 </span>
<span class="line-numbers"> 386 </span> <span class="Comment"><span class="Comment">#</span> Retrieve the values of an object's properties.</span>
<span class="line-numbers"> 387 </span> <span class="FunctionName">_.values</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 388 </span> _.map(obj, _.identity)
<span class="line-numbers"> 389 </span>
<span class="line-numbers"> 390 </span>
<span class="line-numbers"> 391 </span> <span class="Comment"><span class="Comment">#</span> Return a sorted list of the function names available in Underscore.</span>
<span class="line-numbers"> 392 </span> <span class="FunctionName">_.functions</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 393 </span> _.select(_.keys(obj)<span class="FunctionArgument">, key </span><span class="Storage">=&gt;</span> _.isFunction(obj[key])).sort()
<span class="line-numbers"> 394 </span>
<span class="line-numbers"> 395 </span>
<span class="line-numbers"> 396 </span> <span class="Comment"><span class="Comment">#</span> Extend a given object with all of the properties in a source object.</span>
<span class="line-numbers"> 397 </span> <span class="FunctionName">_.extend</span><span class="Keyword">:</span> <span class="FunctionArgument">destination, source</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 398 </span> <span class="Keyword">for</span> val, key <span class="Keyword">in</span> source
<span class="line-numbers"> 399 </span> destination[key]<span class="Keyword">:</span> val
<span class="line-numbers"> 400 </span> destination
<span class="line-numbers"> 401 </span>
<span class="line-numbers"> 402 </span>
<span class="line-numbers"> 403 </span> <span class="Comment"><span class="Comment">#</span> Create a (shallow-cloned) duplicate of an object.</span>
<span class="line-numbers"> 404 </span> <span class="FunctionName">_.clone</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 405 </span> <span class="Keyword">return</span> obj.slice(<span class="Number">0</span>) <span class="Keyword">if</span> _.isArray(obj)
<span class="line-numbers"> 406 </span> _.extend({}, obj)
<span class="line-numbers"> 407 </span>
<span class="line-numbers"> 408 </span>
<span class="line-numbers"> 409 </span> <span class="Comment"><span class="Comment">#</span> Invokes interceptor with the obj, and then returns obj.</span>
<span class="line-numbers"> 410 </span> <span class="Comment"><span class="Comment">#</span> The primary purpose of this method is to &quot;tap into&quot; a method chain, in order to perform operations on intermediate results within the chain.</span>
<span class="line-numbers"> 411 </span> <span class="FunctionName">_.tap</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, interceptor</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 412 </span> interceptor(obj)
<span class="line-numbers"> 413 </span> obj
<span class="line-numbers"> 414 </span>
<span class="line-numbers"> 415 </span>
<span class="line-numbers"> 416 </span> <span class="Comment"><span class="Comment">#</span> Perform a deep comparison to check if two objects are equal.</span>
<span class="line-numbers"> 417 </span> <span class="FunctionName">_.isEqual</span><span class="Keyword">:</span> <span class="FunctionArgument">a, b</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 418 </span> <span class="Comment"><span class="Comment">#</span> Check object identity.</span>
<span class="line-numbers"> 419 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> a <span class="Keyword">is</span> b
<span class="line-numbers"> 420 </span> <span class="Comment"><span class="Comment">#</span> Different types?</span>
<span class="line-numbers"> 421 </span> atype<span class="Keyword">:</span> <span class="Keyword">typeof</span>(a); btype<span class="Keyword">:</span> <span class="Keyword">typeof</span>(b)
<span class="line-numbers"> 422 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> atype <span class="Keyword">isnt</span> btype
<span class="line-numbers"> 423 </span> <span class="Comment"><span class="Comment">#</span> Basic equality test (watch out for coercions).</span>
<span class="line-numbers"> 424 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> <span class="String"><span class="String">`</span>a == b<span class="String">`</span></span>
<span class="line-numbers"> 425 </span> <span class="Comment"><span class="Comment">#</span> One is falsy and the other truthy.</span>
<span class="line-numbers"> 426 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> (<span class="Keyword">!</span>a <span class="Keyword">and</span> b) <span class="Keyword">or</span> (a <span class="Keyword">and</span> <span class="Keyword">!</span>b)
<span class="line-numbers"> 427 </span> <span class="Comment"><span class="Comment">#</span> One of them implements an isEqual()?</span>
<span class="line-numbers"> 428 </span> <span class="Keyword">return</span> a.isEqual(b) <span class="Keyword">if</span> a.isEqual
<span class="line-numbers"> 429 </span> <span class="Comment"><span class="Comment">#</span> Check dates' integer values.</span>
<span class="line-numbers"> 430 </span> <span class="Keyword">return</span> a.getTime() <span class="Keyword">is</span> b.getTime() <span class="Keyword">if</span> _.isDate(a) <span class="Keyword">and</span> _.isDate(b)
<span class="line-numbers"> 431 </span> <span class="Comment"><span class="Comment">#</span> Both are NaN?</span>
<span class="line-numbers"> 432 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> _.isNaN(a) <span class="Keyword">and</span> _.isNaN(b)
<span class="line-numbers"> 433 </span> <span class="Comment"><span class="Comment">#</span> Compare regular expressions.</span>
<span class="line-numbers"> 434 </span> <span class="Keyword">if</span> _.isRegExp(a) <span class="Keyword">and</span> _.isRegExp(b)
<span class="line-numbers"> 435 </span> <span class="Keyword">return</span> a.source <span class="Keyword">is</span> b.source <span class="Keyword">and</span>
<span class="line-numbers"> 436 </span> a.global <span class="Keyword">is</span> b.global <span class="Keyword">and</span>
<span class="line-numbers"> 437 </span> a.ignoreCase <span class="Keyword">is</span> b.ignoreCase <span class="Keyword">and</span>
<span class="line-numbers"> 438 </span> a.multiline <span class="Keyword">is</span> b.multiline
<span class="line-numbers"> 439 </span> <span class="Comment"><span class="Comment">#</span> If a is not an object by this point, we can't handle it.</span>
<span class="line-numbers"> 440 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> atype <span class="Keyword">isnt</span> <span class="String"><span class="String">'</span>object<span class="String">'</span></span>
<span class="line-numbers"> 441 </span> <span class="Comment"><span class="Comment">#</span> Check for different array lengths before comparing contents.</span>
<span class="line-numbers"> 442 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> a.length <span class="Keyword">and</span> (a.length <span class="Keyword">isnt</span> b.length)
<span class="line-numbers"> 443 </span> <span class="Comment"><span class="Comment">#</span> Nothing else worked, deep compare the contents.</span>
<span class="line-numbers"> 444 </span> aKeys<span class="Keyword">:</span> _.keys(a); bKeys<span class="Keyword">:</span> _.keys(b)
<span class="line-numbers"> 445 </span> <span class="Comment"><span class="Comment">#</span> Different object sizes?</span>
<span class="line-numbers"> 446 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> aKeys.length <span class="Keyword">isnt</span> bKeys.length
<span class="line-numbers"> 447 </span> <span class="Comment"><span class="Comment">#</span> Recursive comparison of contents.</span>
<span class="line-numbers"> 448 </span> <span class="Comment"><span class="Comment">#</span> for (var key in a) if (!_.isEqual(a[key], b[key])) return false;</span>
<span class="line-numbers"> 449 </span> <span class="Keyword">return</span> <span class="BuiltInConstant">true</span>
<span class="line-numbers"> 450 </span>
<span class="line-numbers"> 451 </span>
<span class="line-numbers"> 452 </span> <span class="Comment"><span class="Comment">#</span> Is a given array or object empty?</span>
<span class="line-numbers"> 453 </span> <span class="FunctionName">_.isEmpty</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> _.keys(obj).length <span class="Keyword">is</span> <span class="Number">0</span>
<span class="line-numbers"> 454 </span>
<span class="line-numbers"> 455 </span>
<span class="line-numbers"> 456 </span> <span class="Comment"><span class="Comment">#</span> Is a given value a DOM element?</span>
<span class="line-numbers"> 457 </span> <span class="FunctionName">_.isElement</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> obj <span class="Keyword">and</span> obj.nodeType <span class="Keyword">is</span> <span class="Number">1</span>
<span class="line-numbers"> 458 </span>
<span class="line-numbers"> 459 </span>
<span class="line-numbers"> 460 </span> <span class="Comment"><span class="Comment">#</span> Is a given value an array?</span>
<span class="line-numbers"> 461 </span> <span class="FunctionName">_.isArray</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.concat <span class="Keyword">and</span> obj.unshift)
<span class="line-numbers"> 462 </span>
<span class="line-numbers"> 463 </span>
<span class="line-numbers"> 464 </span> <span class="Comment"><span class="Comment">#</span> Is a given variable an arguments object?</span>
<span class="line-numbers"> 465 </span> <span class="FunctionName">_.isArguments</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> obj <span class="Keyword">and</span> _.isNumber(obj.length) <span class="Keyword">and</span> <span class="Keyword">!</span>_.isArray(obj) <span class="Keyword">and</span> <span class="Keyword">!</span>propertyIsEnumerable.call(obj, <span class="String"><span class="String">'</span>length<span class="String">'</span></span>)
<span class="line-numbers"> 466 </span>
<span class="line-numbers"> 467 </span>
<span class="line-numbers"> 468 </span> <span class="Comment"><span class="Comment">#</span> Is the given value a function?</span>
<span class="line-numbers"> 469 </span> <span class="FunctionName">_.isFunction</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.constructor <span class="Keyword">and</span> obj.call <span class="Keyword">and</span> obj.apply)
<span class="line-numbers"> 470 </span>
<span class="line-numbers"> 471 </span>
<span class="line-numbers"> 472 </span> <span class="Comment"><span class="Comment">#</span> Is the given value a string?</span>
<span class="line-numbers"> 473 </span> <span class="FunctionName">_.isString</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">is</span> <span class="String"><span class="String">'</span><span class="String">'</span></span> <span class="Keyword">or</span> (obj <span class="Keyword">and</span> obj.charCodeAt <span class="Keyword">and</span> obj.substr))
<span class="line-numbers"> 474 </span>
<span class="line-numbers"> 475 </span>
<span class="line-numbers"> 476 </span> <span class="Comment"><span class="Comment">#</span> Is a given value a number?</span>
<span class="line-numbers"> 477 </span> <span class="FunctionName">_.isNumber</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> toString.call(obj) <span class="Keyword">is</span> <span class="String"><span class="String">'</span>[object Number]<span class="String">'</span></span>
<span class="line-numbers"> 478 </span>
<span class="line-numbers"> 479 </span>
<span class="line-numbers"> 480 </span> <span class="Comment"><span class="Comment">#</span> Is a given value a Date?</span>
<span class="line-numbers"> 481 </span> <span class="FunctionName">_.isDate</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.getTimezoneOffset <span class="Keyword">and</span> obj.setUTCFullYear)
<span class="line-numbers"> 482 </span>
<span class="line-numbers"> 483 </span>
<span class="line-numbers"> 484 </span> <span class="Comment"><span class="Comment">#</span> Is the given value a regular expression?</span>
<span class="line-numbers"> 485 </span> <span class="FunctionName">_.isRegExp</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.exec <span class="Keyword">and</span> (obj.ignoreCase <span class="Keyword">or</span> obj.ignoreCase <span class="Keyword">is</span> <span class="BuiltInConstant">false</span>))
<span class="line-numbers"> 486 </span>
<span class="line-numbers"> 487 </span>
<span class="line-numbers"> 488 </span> <span class="Comment"><span class="Comment">#</span> Is the given value NaN -- this one is interesting. NaN != NaN, and</span>
<span class="line-numbers"> 489 </span> <span class="Comment"><span class="Comment">#</span> isNaN(undefined) == true, so we make sure it's a number first.</span>
<span class="line-numbers"> 490 </span> <span class="FunctionName">_.isNaN</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> _.isNumber(obj) <span class="Keyword">and</span> window.isNaN(obj)
<span class="line-numbers"> 491 </span>
<span class="line-numbers"> 492 </span>
<span class="line-numbers"> 493 </span> <span class="Comment"><span class="Comment">#</span> Is a given value equal to null?</span>
<span class="line-numbers"> 494 </span> <span class="FunctionName">_.isNull</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> obj <span class="Keyword">is</span> <span class="BuiltInConstant">null</span>
<span class="line-numbers"> 495 </span>
<span class="line-numbers"> 496 </span>
<span class="line-numbers"> 497 </span> <span class="Comment"><span class="Comment">#</span> Is a given variable undefined?</span>
<span class="line-numbers"> 498 </span> <span class="FunctionName">_.isUndefined</span><span class="Keyword">:</span> <span class="FunctionArgument">obj</span> <span class="Storage">=&gt;</span> <span class="Keyword">typeof</span> obj <span class="Keyword">is</span> <span class="String"><span class="String">'</span>undefined<span class="String">'</span></span>
<span class="line-numbers"> 499 </span>
<span class="line-numbers"> 500 </span>
<span class="line-numbers"> 501 </span> <span class="Comment"><span class="Comment">#</span> -------------------------- Utility Functions: --------------------------</span>
<span class="line-numbers"> 502 </span>
<span class="line-numbers"> 503 </span> <span class="Comment"><span class="Comment">#</span> Run Underscore.js in noConflict mode, returning the '_' variable to its</span>
<span class="line-numbers"> 504 </span> <span class="Comment"><span class="Comment">#</span> previous owner. Returns a reference to the Underscore object.</span>
<span class="line-numbers"> 505 </span> <span class="FunctionName">_.noConflict</span><span class="Keyword">:</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 506 </span> root._<span class="Keyword">:</span> previousUnderscore
<span class="line-numbers"> 507 </span> <span class="Variable">this</span>
<span class="line-numbers"> 508 </span>
<span class="line-numbers"> 509 </span>
<span class="line-numbers"> 510 </span> <span class="Comment"><span class="Comment">#</span> Keep the identity function around for default iterators.</span>
<span class="line-numbers"> 511 </span> <span class="FunctionName">_.identity</span><span class="Keyword">:</span> <span class="FunctionArgument">value</span> <span class="Storage">=&gt;</span> value
<span class="line-numbers"> 512 </span>
<span class="line-numbers"> 513 </span>
<span class="line-numbers"> 514 </span> <span class="Comment"><span class="Comment">#</span> Break out of the middle of an iteration.</span>
<span class="line-numbers"> 515 </span> <span class="FunctionName">_.breakLoop</span><span class="Keyword">:</span> <span class="Storage">=&gt;</span> <span class="Keyword">throw</span> breaker
<span class="line-numbers"> 516 </span>
<span class="line-numbers"> 517 </span>
<span class="line-numbers"> 518 </span> <span class="Comment"><span class="Comment">#</span> Generate a unique integer id (unique within the entire client session).</span>
<span class="line-numbers"> 519 </span> <span class="Comment"><span class="Comment">#</span> Useful for temporary DOM ids.</span>
<span class="line-numbers"> 520 </span> idCounter<span class="Keyword">:</span> <span class="Number">0</span>
<span class="line-numbers"> 521 </span> <span class="FunctionName">_.uniqueId</span><span class="Keyword">:</span> <span class="FunctionArgument">prefix</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 522 </span> (prefix <span class="Keyword">or</span> <span class="String"><span class="String">'</span><span class="String">'</span></span>) <span class="Keyword">+</span> idCounter<span class="Keyword">++</span>
<span class="line-numbers"> 523 </span>
<span class="line-numbers"> 524 </span>
<span class="line-numbers"> 525 </span> <span class="Comment"><span class="Comment">#</span> JavaScript templating a-la ERB, pilfered from John Resig's</span>
<span class="line-numbers"> 526 </span> <span class="Comment"><span class="Comment">#</span> &quot;Secrets of the JavaScript Ninja&quot;, page 83.</span>
<span class="line-numbers"> 527 </span> <span class="FunctionName">_.template</span><span class="Keyword">:</span> <span class="FunctionArgument">str, data</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 528 </span> <span class="String"><span class="String">`</span>var fn = new Function('obj',</span>
<span class="line-numbers"> 529 </span> <span class="String"> 'var p=[],print=function(){p.push.apply(p,arguments);};' +</span>
<span class="line-numbers"> 530 </span> <span class="String"> 'with(obj){p.push(<span class="UserDefinedConstant">\'</span>' +</span>
<span class="line-numbers"> 531 </span> <span class="String"> str.</span>
<span class="line-numbers"> 532 </span> <span class="String"> replace(/[<span class="UserDefinedConstant">\r</span><span class="UserDefinedConstant">\t</span><span class="UserDefinedConstant">\n</span>]/g, &quot; &quot;).</span>
<span class="line-numbers"> 533 </span> <span class="String"> split(&quot;&lt;%&quot;).join(&quot;<span class="UserDefinedConstant">\t</span>&quot;).</span>
<span class="line-numbers"> 534 </span> <span class="String"> replace(/((^|%&gt;)[^<span class="UserDefinedConstant">\t</span>]*)'/g, &quot;$1<span class="UserDefinedConstant">\r</span>&quot;).</span>
<span class="line-numbers"> 535 </span> <span class="String"> replace(/<span class="UserDefinedConstant">\t</span>=(.*?)%&gt;/g, &quot;',$1,'&quot;).</span>
<span class="line-numbers"> 536 </span> <span class="String"> split(&quot;<span class="UserDefinedConstant">\t</span>&quot;).join(&quot;');&quot;).</span>
<span class="line-numbers"> 537 </span> <span class="String"> split(&quot;%&gt;&quot;).join(&quot;p.push('&quot;).</span>
<span class="line-numbers"> 538 </span> <span class="String"> split(&quot;<span class="UserDefinedConstant">\r</span>&quot;).join(&quot;<span class="UserDefinedConstant">\\</span>'&quot;) +</span>
<span class="line-numbers"> 539 </span> <span class="String"> &quot;');}return p.join('');&quot;)<span class="String">`</span></span>
<span class="line-numbers"> 540 </span> <span class="Keyword">if</span> data <span class="Keyword">then</span> fn(data) <span class="Keyword">else</span> fn
<span class="line-numbers"> 541 </span>
<span class="line-numbers"> 542 </span>
<span class="line-numbers"> 543 </span> <span class="Comment"><span class="Comment">#</span> ------------------------------- Aliases ----------------------------------</span>
<span class="line-numbers"> 544 </span>
<span class="line-numbers"> 545 </span> _.forEach<span class="Keyword">:</span> _.each
<span class="line-numbers"> 546 </span> _.foldl<span class="Keyword">:</span> _.inject<span class="Keyword">:</span> _.reduce
<span class="line-numbers"> 547 </span> _.foldr<span class="Keyword">:</span> _.reduceRight
<span class="line-numbers"> 548 </span> _.filter<span class="Keyword">:</span> _.select
<span class="line-numbers"> 549 </span> _.every<span class="Keyword">:</span> _.all
<span class="line-numbers"> 550 </span> _.some<span class="Keyword">:</span> _.any
<span class="line-numbers"> 551 </span> _.head<span class="Keyword">:</span> _.first
<span class="line-numbers"> 552 </span> _.tail<span class="Keyword">:</span> _.rest
<span class="line-numbers"> 553 </span> _.methods<span class="Keyword">:</span> _.functions
<span class="line-numbers"> 554 </span>
<span class="line-numbers"> 555 </span>
<span class="line-numbers"> 556 </span> <span class="Comment"><span class="Comment">#</span> /*------------------------ Setup the OOP Wrapper: --------------------------*/</span>
<span class="line-numbers"> 557 </span>
<span class="line-numbers"> 558 </span> <span class="Comment"><span class="Comment">#</span> Helper function to continue chaining intermediate results.</span>
<span class="line-numbers"> 559 </span> <span class="FunctionName">result</span><span class="Keyword">:</span> <span class="FunctionArgument">obj, chain</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 560 </span> <span class="Keyword">if</span> chain <span class="Keyword">then</span> _(obj).chain() <span class="Keyword">else</span> obj
<span class="line-numbers"> 561 </span>
<span class="line-numbers"> 562 </span>
<span class="line-numbers"> 563 </span> <span class="Comment"><span class="Comment">#</span> Add all of the Underscore functions to the wrapper object.</span>
<span class="line-numbers"> 564 </span> _.each(_.functions(_))<span class="FunctionArgument"> name </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 565 </span> method<span class="Keyword">:</span> _[name]
<span class="line-numbers"> 566 </span> wrapper.prototype[name]<span class="Keyword">:</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 567 </span> unshift.call(arguments, <span class="Variable">this</span>._wrapped)
<span class="line-numbers"> 568 </span> result(method.apply(_, arguments), <span class="Variable">this</span>._chain)
<span class="line-numbers"> 569 </span>
<span class="line-numbers"> 570 </span>
<span class="line-numbers"> 571 </span> <span class="Comment"><span class="Comment">#</span> Add all mutator Array functions to the wrapper.</span>
<span class="line-numbers"> 572 </span> _.each([<span class="String"><span class="String">'</span>pop<span class="String">'</span></span>, <span class="String"><span class="String">'</span>push<span class="String">'</span></span>, <span class="String"><span class="String">'</span>reverse<span class="String">'</span></span>, <span class="String"><span class="String">'</span>shift<span class="String">'</span></span>, <span class="String"><span class="String">'</span>sort<span class="String">'</span></span>, <span class="String"><span class="String">'</span>splice<span class="String">'</span></span>, <span class="String"><span class="String">'</span>unshift<span class="String">'</span></span>])<span class="FunctionArgument"> name </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 573 </span> method<span class="Keyword">:</span> Array.prototype[name]
<span class="line-numbers"> 574 </span> wrapper.prototype[name]<span class="Keyword">:</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 575 </span> method.apply(<span class="Variable">this</span>._wrapped, arguments)
<span class="line-numbers"> 576 </span> result(<span class="Variable">this</span>._wrapped, <span class="Variable">this</span>._chain)
<span class="line-numbers"> 577 </span>
<span class="line-numbers"> 578 </span>
<span class="line-numbers"> 579 </span> <span class="Comment"><span class="Comment">#</span> Add all accessor Array functions to the wrapper.</span>
<span class="line-numbers"> 580 </span> _.each([<span class="String"><span class="String">'</span>concat<span class="String">'</span></span>, <span class="String"><span class="String">'</span>join<span class="String">'</span></span>, <span class="String"><span class="String">'</span>slice<span class="String">'</span></span>])<span class="FunctionArgument"> name </span><span class="Storage">=&gt;</span>
<span class="line-numbers"> 581 </span> method<span class="Keyword">:</span> Array.prototype[name]
<span class="line-numbers"> 582 </span> wrapper.prototype[name]<span class="Keyword">:</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 583 </span> result(method.apply(<span class="Variable">this</span>._wrapped, arguments), <span class="Variable">this</span>._chain)
<span class="line-numbers"> 584 </span>
<span class="line-numbers"> 585 </span>
<span class="line-numbers"> 586 </span> <span class="Comment"><span class="Comment">#</span> Start chaining a wrapped Underscore object.</span>
<span class="line-numbers"> 587 </span> <span class="FunctionName">wrapper.prototype.chain</span><span class="Keyword">:</span> <span class="Storage">=&gt;</span>
<span class="line-numbers"> 588 </span> <span class="Variable">this</span>._chain<span class="Keyword">:</span> <span class="BuiltInConstant">true</span>
<span class="line-numbers"> 589 </span> <span class="Variable">this</span>
<span class="line-numbers"> 590 </span>
<span class="line-numbers"> 591 </span>
<span class="line-numbers"> 592 </span> <span class="Comment"><span class="Comment">#</span> Extracts the result from a wrapped and chained object.</span>
<span class="line-numbers"> 593 </span> <span class="FunctionName">wrapper.prototype.value</span><span class="Keyword">:</span> <span class="Storage">=&gt;</span> <span class="Variable">this</span>._wrapped
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