mirror of
https://github.com/jashkenas/coffeescript.git
synced 2026-05-03 03:00:14 -04:00
76c076db55
The following is now allowed:
o =
a: 1
b: 2
"#{'c'}": 3
"#{'d'}": 4
e: 5
"#{'f'}": 6
g: 7
It compiles to:
o = (
obj = {
a: 1,
b: 2
},
obj["" + 'c'] = 3,
obj["" + 'd'] = 4,
obj.e = 5,
obj["" + 'f'] = 6,
obj.g = 7,
obj
);
- Closes #3039. Empty interpolations in object keys are now _supposed_ to be
allowed.
- Closes #1131. No need to improve error messages for attempted key
interpolation anymore.
- Implementing this required fixing the following bug: `("" + a): 1` used to
error out on the colon, saying "unexpected colon". But really, it is the
attempted object key that is unexpected. Now the error is on the opening
parenthesis instead.
- However, the above fix broke some error message tests for regexes. The easiest
way to fix this was to make a seemingly unrelated change: The error messages
for unexpected identifiers, numbers, strings and regexes now say for example
'unexpected string' instead of 'unexpected """some #{really long} string"""'.
In other words, the tag _name_ is used instead of the tag _value_.
This was way easier to implement, and is more helpful to the user. Using the
tag value is good for operators, reserved words and the like, but not for
tokens which can contain any text. For example, 'unexpected identifier' is
better than 'unexpected expected' (if a variable called 'expected' was used
erraneously).
- While writing tests for the above point I found a few minor bugs with string
locations which have been fixed.
500 lines
18 KiB
JavaScript
500 lines
18 KiB
JavaScript
// Generated by CoffeeScript 1.9.0
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(function() {
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var BALANCED_PAIRS, CALL_CLOSERS, EXPRESSION_CLOSE, EXPRESSION_END, EXPRESSION_START, IMPLICIT_CALL, IMPLICIT_END, IMPLICIT_FUNC, IMPLICIT_UNSPACED_CALL, INVERSES, LINEBREAKS, SINGLE_CLOSERS, SINGLE_LINERS, generate, k, left, len, ref, rite,
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indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
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slice = [].slice;
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generate = function(tag, value, origin) {
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var tok;
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tok = [tag, value];
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tok.generated = true;
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if (origin) {
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tok.origin = origin;
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}
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return tok;
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};
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exports.Rewriter = (function() {
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function Rewriter() {}
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Rewriter.prototype.rewrite = function(tokens1) {
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this.tokens = tokens1;
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this.removeLeadingNewlines();
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this.closeOpenCalls();
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this.closeOpenIndexes();
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this.normalizeLines();
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this.tagPostfixConditionals();
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this.addImplicitBracesAndParens();
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this.addLocationDataToGeneratedTokens();
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return this.tokens;
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};
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Rewriter.prototype.scanTokens = function(block) {
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var i, token, tokens;
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tokens = this.tokens;
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i = 0;
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while (token = tokens[i]) {
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i += block.call(this, token, i, tokens);
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}
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return true;
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};
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Rewriter.prototype.detectEnd = function(i, condition, action) {
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var levels, ref, ref1, token, tokens;
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tokens = this.tokens;
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levels = 0;
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while (token = tokens[i]) {
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if (levels === 0 && condition.call(this, token, i)) {
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return action.call(this, token, i);
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}
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if (!token || levels < 0) {
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return action.call(this, token, i - 1);
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}
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if (ref = token[0], indexOf.call(EXPRESSION_START, ref) >= 0) {
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levels += 1;
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} else if (ref1 = token[0], indexOf.call(EXPRESSION_END, ref1) >= 0) {
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levels -= 1;
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}
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i += 1;
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}
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return i - 1;
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};
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Rewriter.prototype.removeLeadingNewlines = function() {
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var i, k, len, ref, tag;
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ref = this.tokens;
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for (i = k = 0, len = ref.length; k < len; i = ++k) {
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tag = ref[i][0];
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if (tag !== 'TERMINATOR') {
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break;
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}
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}
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if (i) {
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return this.tokens.splice(0, i);
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}
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};
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Rewriter.prototype.closeOpenCalls = function() {
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var action, condition;
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condition = function(token, i) {
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var ref;
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return ((ref = token[0]) === ')' || ref === 'CALL_END') || token[0] === 'OUTDENT' && this.tag(i - 1) === ')';
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};
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action = function(token, i) {
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return this.tokens[token[0] === 'OUTDENT' ? i - 1 : i][0] = 'CALL_END';
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};
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return this.scanTokens(function(token, i) {
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if (token[0] === 'CALL_START') {
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this.detectEnd(i + 1, condition, action);
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}
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return 1;
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});
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};
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Rewriter.prototype.closeOpenIndexes = function() {
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var action, condition;
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condition = function(token, i) {
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var ref;
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return (ref = token[0]) === ']' || ref === 'INDEX_END';
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};
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action = function(token, i) {
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return token[0] = 'INDEX_END';
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};
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return this.scanTokens(function(token, i) {
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if (token[0] === 'INDEX_START') {
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this.detectEnd(i + 1, condition, action);
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}
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return 1;
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});
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};
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Rewriter.prototype.indexOfTag = function() {
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var fuzz, i, j, k, pattern, ref, ref1;
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i = arguments[0], pattern = 2 <= arguments.length ? slice.call(arguments, 1) : [];
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fuzz = 0;
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for (j = k = 0, ref = pattern.length; 0 <= ref ? k < ref : k > ref; j = 0 <= ref ? ++k : --k) {
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while (this.tag(i + j + fuzz) === 'HERECOMMENT') {
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fuzz += 2;
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}
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if (pattern[j] == null) {
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continue;
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}
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if (typeof pattern[j] === 'string') {
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pattern[j] = [pattern[j]];
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}
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if (ref1 = this.tag(i + j + fuzz), indexOf.call(pattern[j], ref1) < 0) {
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return -1;
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}
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}
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return i + j + fuzz - 1;
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};
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Rewriter.prototype.looksObjectish = function(j) {
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var end, index;
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if (this.indexOfTag(j, '@', null, ':') > -1 || this.indexOfTag(j, null, ':') > -1) {
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return true;
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}
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index = this.indexOfTag(j, EXPRESSION_START);
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if (index > -1) {
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end = null;
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this.detectEnd(index + 1, (function(token) {
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var ref;
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return ref = token[0], indexOf.call(EXPRESSION_END, ref) >= 0;
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}), (function(token, i) {
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return end = i;
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}));
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if (this.tag(end + 1) === ':') {
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return true;
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}
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}
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return false;
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};
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Rewriter.prototype.findTagsBackwards = function(i, tags) {
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var backStack, ref, ref1, ref2, ref3, ref4, ref5;
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backStack = [];
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while (i >= 0 && (backStack.length || (ref2 = this.tag(i), indexOf.call(tags, ref2) < 0) && ((ref3 = this.tag(i), indexOf.call(EXPRESSION_START, ref3) < 0) || this.tokens[i].generated) && (ref4 = this.tag(i), indexOf.call(LINEBREAKS, ref4) < 0))) {
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if (ref = this.tag(i), indexOf.call(EXPRESSION_END, ref) >= 0) {
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backStack.push(this.tag(i));
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}
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if ((ref1 = this.tag(i), indexOf.call(EXPRESSION_START, ref1) >= 0) && backStack.length) {
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backStack.pop();
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}
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i -= 1;
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}
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return ref5 = this.tag(i), indexOf.call(tags, ref5) >= 0;
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};
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Rewriter.prototype.addImplicitBracesAndParens = function() {
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var stack, start;
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stack = [];
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start = null;
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return this.scanTokens(function(token, i, tokens) {
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var endImplicitCall, endImplicitObject, forward, inImplicit, inImplicitCall, inImplicitControl, inImplicitObject, newLine, nextTag, offset, prevTag, prevToken, ref, ref1, ref2, ref3, ref4, ref5, s, sameLine, stackIdx, stackTag, stackTop, startIdx, startImplicitCall, startImplicitObject, startsLine, tag;
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tag = token[0];
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prevTag = (prevToken = i > 0 ? tokens[i - 1] : [])[0];
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nextTag = (i < tokens.length - 1 ? tokens[i + 1] : [])[0];
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stackTop = function() {
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return stack[stack.length - 1];
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};
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startIdx = i;
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forward = function(n) {
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return i - startIdx + n;
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};
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inImplicit = function() {
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var ref, ref1;
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return (ref = stackTop()) != null ? (ref1 = ref[2]) != null ? ref1.ours : void 0 : void 0;
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};
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inImplicitCall = function() {
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var ref;
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return inImplicit() && ((ref = stackTop()) != null ? ref[0] : void 0) === '(';
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};
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inImplicitObject = function() {
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var ref;
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return inImplicit() && ((ref = stackTop()) != null ? ref[0] : void 0) === '{';
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};
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inImplicitControl = function() {
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var ref;
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return inImplicit && ((ref = stackTop()) != null ? ref[0] : void 0) === 'CONTROL';
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};
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startImplicitCall = function(j) {
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var idx;
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idx = j != null ? j : i;
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stack.push([
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'(', idx, {
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ours: true
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}
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]);
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tokens.splice(idx, 0, generate('CALL_START', '('));
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if (j == null) {
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return i += 1;
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}
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};
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endImplicitCall = function() {
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stack.pop();
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tokens.splice(i, 0, generate('CALL_END', ')', ['', 'end of input', token[2]]));
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return i += 1;
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};
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startImplicitObject = function(j, startsLine) {
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var idx;
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if (startsLine == null) {
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startsLine = true;
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}
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idx = j != null ? j : i;
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stack.push([
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'{', idx, {
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sameLine: true,
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startsLine: startsLine,
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ours: true
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}
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]);
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tokens.splice(idx, 0, generate('{', generate(new String('{')), token));
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if (j == null) {
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return i += 1;
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}
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};
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endImplicitObject = function(j) {
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j = j != null ? j : i;
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stack.pop();
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tokens.splice(j, 0, generate('}', '}', token));
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return i += 1;
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};
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if (inImplicitCall() && (tag === 'IF' || tag === 'TRY' || tag === 'FINALLY' || tag === 'CATCH' || tag === 'CLASS' || tag === 'SWITCH')) {
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stack.push([
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'CONTROL', i, {
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ours: true
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}
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]);
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return forward(1);
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}
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if (tag === 'INDENT' && inImplicit()) {
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if (prevTag !== '=>' && prevTag !== '->' && prevTag !== '[' && prevTag !== '(' && prevTag !== ',' && prevTag !== '{' && prevTag !== 'TRY' && prevTag !== 'ELSE' && prevTag !== '=') {
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while (inImplicitCall()) {
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endImplicitCall();
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}
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}
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if (inImplicitControl()) {
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stack.pop();
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}
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stack.push([tag, i]);
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return forward(1);
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}
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if (indexOf.call(EXPRESSION_START, tag) >= 0) {
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stack.push([tag, i]);
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return forward(1);
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}
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if (indexOf.call(EXPRESSION_END, tag) >= 0) {
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while (inImplicit()) {
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if (inImplicitCall()) {
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endImplicitCall();
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} else if (inImplicitObject()) {
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endImplicitObject();
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} else {
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stack.pop();
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}
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}
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start = stack.pop();
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}
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if ((indexOf.call(IMPLICIT_FUNC, tag) >= 0 && token.spaced || tag === '?' && i > 0 && !tokens[i - 1].spaced) && (indexOf.call(IMPLICIT_CALL, nextTag) >= 0 || indexOf.call(IMPLICIT_UNSPACED_CALL, nextTag) >= 0 && !((ref = tokens[i + 1]) != null ? ref.spaced : void 0) && !((ref1 = tokens[i + 1]) != null ? ref1.newLine : void 0))) {
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if (tag === '?') {
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tag = token[0] = 'FUNC_EXIST';
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}
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startImplicitCall(i + 1);
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return forward(2);
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}
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if (indexOf.call(IMPLICIT_FUNC, tag) >= 0 && this.indexOfTag(i + 1, 'INDENT', null, ':') > -1 && !this.findTagsBackwards(i, ['CLASS', 'EXTENDS', 'IF', 'CATCH', 'SWITCH', 'LEADING_WHEN', 'FOR', 'WHILE', 'UNTIL'])) {
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startImplicitCall(i + 1);
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stack.push(['INDENT', i + 2]);
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return forward(3);
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}
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if (tag === ':') {
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s = (function() {
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var ref2;
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switch (false) {
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case ref2 = this.tag(i - 1), indexOf.call(EXPRESSION_END, ref2) < 0:
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return start[1];
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case this.tag(i - 2) !== '@':
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return i - 2;
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default:
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return i - 1;
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}
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}).call(this);
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while (this.tag(s - 2) === 'HERECOMMENT') {
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s -= 2;
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}
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this.insideForDeclaration = nextTag === 'FOR';
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startsLine = s === 0 || (ref2 = this.tag(s - 1), indexOf.call(LINEBREAKS, ref2) >= 0) || tokens[s - 1].newLine;
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if (stackTop()) {
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ref3 = stackTop(), stackTag = ref3[0], stackIdx = ref3[1];
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if ((stackTag === '{' || stackTag === 'INDENT' && this.tag(stackIdx - 1) === '{') && (startsLine || this.tag(s - 1) === ',' || this.tag(s - 1) === '{')) {
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return forward(1);
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}
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}
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startImplicitObject(s, !!startsLine);
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return forward(2);
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}
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if (inImplicitObject() && indexOf.call(LINEBREAKS, tag) >= 0) {
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stackTop()[2].sameLine = false;
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}
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newLine = prevTag === 'OUTDENT' || prevToken.newLine;
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if (indexOf.call(IMPLICIT_END, tag) >= 0 || indexOf.call(CALL_CLOSERS, tag) >= 0 && newLine) {
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while (inImplicit()) {
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ref4 = stackTop(), stackTag = ref4[0], stackIdx = ref4[1], (ref5 = ref4[2], sameLine = ref5.sameLine, startsLine = ref5.startsLine);
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if (inImplicitCall() && prevTag !== ',') {
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endImplicitCall();
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} else if (inImplicitObject() && !this.insideForDeclaration && sameLine && tag !== 'TERMINATOR' && prevTag !== ':') {
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endImplicitObject();
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} else if (inImplicitObject() && tag === 'TERMINATOR' && prevTag !== ',' && !(startsLine && this.looksObjectish(i + 1))) {
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endImplicitObject();
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} else {
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break;
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}
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}
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}
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if (tag === ',' && !this.looksObjectish(i + 1) && inImplicitObject() && !this.insideForDeclaration && (nextTag !== 'TERMINATOR' || !this.looksObjectish(i + 2))) {
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offset = nextTag === 'OUTDENT' ? 1 : 0;
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while (inImplicitObject()) {
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endImplicitObject(i + offset);
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}
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}
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return forward(1);
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});
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};
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Rewriter.prototype.addLocationDataToGeneratedTokens = function() {
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return this.scanTokens(function(token, i, tokens) {
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var column, line, nextLocation, prevLocation, ref, ref1;
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if (token[2]) {
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return 1;
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}
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if (!(token.generated || token.explicit)) {
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return 1;
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}
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if (token[0] === '{' && (nextLocation = (ref = tokens[i + 1]) != null ? ref[2] : void 0)) {
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line = nextLocation.first_line, column = nextLocation.first_column;
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} else if (prevLocation = (ref1 = tokens[i - 1]) != null ? ref1[2] : void 0) {
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line = prevLocation.last_line, column = prevLocation.last_column;
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} else {
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line = column = 0;
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}
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token[2] = {
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first_line: line,
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first_column: column,
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last_line: line,
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last_column: column
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};
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return 1;
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});
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};
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Rewriter.prototype.normalizeLines = function() {
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var action, condition, indent, outdent, starter;
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starter = indent = outdent = null;
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condition = function(token, i) {
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var ref, ref1, ref2, ref3;
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return token[1] !== ';' && (ref = token[0], indexOf.call(SINGLE_CLOSERS, ref) >= 0) && !(token[0] === 'TERMINATOR' && (ref1 = this.tag(i + 1), indexOf.call(EXPRESSION_CLOSE, ref1) >= 0)) && !(token[0] === 'ELSE' && starter !== 'THEN') && !(((ref2 = token[0]) === 'CATCH' || ref2 === 'FINALLY') && (starter === '->' || starter === '=>')) || (ref3 = token[0], indexOf.call(CALL_CLOSERS, ref3) >= 0) && this.tokens[i - 1].newLine;
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};
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action = function(token, i) {
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return this.tokens.splice((this.tag(i - 1) === ',' ? i - 1 : i), 0, outdent);
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};
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return this.scanTokens(function(token, i, tokens) {
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var j, k, ref, ref1, ref2, tag;
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tag = token[0];
|
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if (tag === 'TERMINATOR') {
|
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if (this.tag(i + 1) === 'ELSE' && this.tag(i - 1) !== 'OUTDENT') {
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tokens.splice.apply(tokens, [i, 1].concat(slice.call(this.indentation())));
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return 1;
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}
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if (ref = this.tag(i + 1), indexOf.call(EXPRESSION_CLOSE, ref) >= 0) {
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tokens.splice(i, 1);
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return 0;
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}
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}
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if (tag === 'CATCH') {
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for (j = k = 1; k <= 2; j = ++k) {
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if (!((ref1 = this.tag(i + j)) === 'OUTDENT' || ref1 === 'TERMINATOR' || ref1 === 'FINALLY')) {
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continue;
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}
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tokens.splice.apply(tokens, [i + j, 0].concat(slice.call(this.indentation())));
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return 2 + j;
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}
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}
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if (indexOf.call(SINGLE_LINERS, tag) >= 0 && this.tag(i + 1) !== 'INDENT' && !(tag === 'ELSE' && this.tag(i + 1) === 'IF')) {
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starter = tag;
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ref2 = this.indentation(tokens[i]), indent = ref2[0], outdent = ref2[1];
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if (starter === 'THEN') {
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indent.fromThen = true;
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}
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tokens.splice(i + 1, 0, indent);
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this.detectEnd(i + 2, condition, action);
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if (tag === 'THEN') {
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tokens.splice(i, 1);
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}
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return 1;
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}
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return 1;
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});
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};
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Rewriter.prototype.tagPostfixConditionals = function() {
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var action, condition, original;
|
|
original = null;
|
|
condition = function(token, i) {
|
|
var prevTag, tag;
|
|
tag = token[0];
|
|
prevTag = this.tokens[i - 1][0];
|
|
return tag === 'TERMINATOR' || (tag === 'INDENT' && indexOf.call(SINGLE_LINERS, prevTag) < 0);
|
|
};
|
|
action = function(token, i) {
|
|
if (token[0] !== 'INDENT' || (token.generated && !token.fromThen)) {
|
|
return original[0] = 'POST_' + original[0];
|
|
}
|
|
};
|
|
return this.scanTokens(function(token, i) {
|
|
if (token[0] !== 'IF') {
|
|
return 1;
|
|
}
|
|
original = token;
|
|
this.detectEnd(i + 1, condition, action);
|
|
return 1;
|
|
});
|
|
};
|
|
|
|
Rewriter.prototype.indentation = function(origin) {
|
|
var indent, outdent;
|
|
indent = ['INDENT', 2];
|
|
outdent = ['OUTDENT', 2];
|
|
if (origin) {
|
|
indent.generated = outdent.generated = true;
|
|
indent.origin = outdent.origin = origin;
|
|
} else {
|
|
indent.explicit = outdent.explicit = true;
|
|
}
|
|
return [indent, outdent];
|
|
};
|
|
|
|
Rewriter.prototype.generate = generate;
|
|
|
|
Rewriter.prototype.tag = function(i) {
|
|
var ref;
|
|
return (ref = this.tokens[i]) != null ? ref[0] : void 0;
|
|
};
|
|
|
|
return Rewriter;
|
|
|
|
})();
|
|
|
|
BALANCED_PAIRS = [['(', ')'], ['[', ']'], ['{', '}'], ['INDENT', 'OUTDENT'], ['CALL_START', 'CALL_END'], ['PARAM_START', 'PARAM_END'], ['INDEX_START', 'INDEX_END'], ['STRING_START', 'STRING_END'], ['REGEX_START', 'REGEX_END']];
|
|
|
|
exports.INVERSES = INVERSES = {};
|
|
|
|
EXPRESSION_START = [];
|
|
|
|
EXPRESSION_END = [];
|
|
|
|
for (k = 0, len = BALANCED_PAIRS.length; k < len; k++) {
|
|
ref = BALANCED_PAIRS[k], left = ref[0], rite = ref[1];
|
|
EXPRESSION_START.push(INVERSES[rite] = left);
|
|
EXPRESSION_END.push(INVERSES[left] = rite);
|
|
}
|
|
|
|
EXPRESSION_CLOSE = ['CATCH', 'THEN', 'ELSE', 'FINALLY'].concat(EXPRESSION_END);
|
|
|
|
IMPLICIT_FUNC = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@', 'THIS'];
|
|
|
|
IMPLICIT_CALL = ['IDENTIFIER', 'NUMBER', 'STRING', 'STRING_START', 'JS', 'REGEX', 'REGEX_START', 'NEW', 'PARAM_START', 'CLASS', 'IF', 'TRY', 'SWITCH', 'THIS', 'BOOL', 'NULL', 'UNDEFINED', 'UNARY', 'YIELD', 'UNARY_MATH', 'SUPER', 'THROW', '@', '->', '=>', '[', '(', '{', '--', '++'];
|
|
|
|
IMPLICIT_UNSPACED_CALL = ['+', '-'];
|
|
|
|
IMPLICIT_END = ['POST_IF', 'FOR', 'WHILE', 'UNTIL', 'WHEN', 'BY', 'LOOP', 'TERMINATOR'];
|
|
|
|
SINGLE_LINERS = ['ELSE', '->', '=>', 'TRY', 'FINALLY', 'THEN'];
|
|
|
|
SINGLE_CLOSERS = ['TERMINATOR', 'CATCH', 'FINALLY', 'ELSE', 'OUTDENT', 'LEADING_WHEN'];
|
|
|
|
LINEBREAKS = ['TERMINATOR', 'INDENT', 'OUTDENT'];
|
|
|
|
CALL_CLOSERS = ['.', '?.', '::', '?::'];
|
|
|
|
}).call(this);
|