mirror of
https://github.com/jashkenas/coffeescript.git
synced 2026-01-13 16:57:54 -05:00
fb2be8e1e3
* Eliminate wrapper around “bound” (arrow) functions; output `=>` for such functions * Remove irrelevant (and breaking) tests * Minor cleanup * When a function parameter is a splat (i.e., it uses the ES2015 rest parameter syntax) output that parameter as ES2015 * Rearrange function parameters when one of the parameters is a splat and isn’t the last parameter (very WIP) * Handle params like `@param`, adding assignment expressions for them when they appear; ensure splat parameter is last * Add parameter names (not a text like `'\nValue IdentifierLiteral: a'`) to the scope, so that parameters can’t be deleted; move body-related lines together; more explanation of what’s going on * For parameters with a default value, correctly add the parameter name to the function scope * Handle expansions in function parameters: when an expansion is found, set the parameters to only be the original parameters left of the expansion, then an `...args` parameter; and in the function body define variables for the parameters to the right of the expansion, including setting default values * Handle splat parameters the same way we handle expansions: if a splat parameter is found, it becomes the last parameter in the function definition, and all following parameters get declared in the function body. Fix the splat/rest parameter values after the post-splat parameters have been extracted from it. Clean up `Code.compileNode` so that we loop through the parameters only once, and we create all expressions using calls like `new IdentifierLiteral` rather than `@makeCode`. * Fix parameter name when a parameter is a splat attached to `this` (e.g. `@param...`) * Rather than assigning post-splat parameters based on index, use slice; passes test “Functions with splats being called with too few arguments” * Dial back our w00t indentation * Better parsing of parameter names (WIP) * Refactor processing of splat/expansion parameters * Fix assignment of default parameters for parameters that come after a splat * Better check for whether a param is attached to `this` * More understandable variable names * For parameters after a splat or expansion, assign them similar to the 1.x destructuring method of using `arguments`, except only concern ourselves with the post-splat parameters instead of all parameters; and use the splat/expansion parameter name, since `arguments` in ES fat arrow functions refers to the parent function’s `arguments` rather than the fat arrow function’s arguments/parameters * Don’t add unnamed parameters (like `[]` as a parameter) to the function scope * Disallow multiple splat/expansion parameters in function definitions; disallow lone expansion parameters * Fix `this` params not getting assigned if the parameter is after a splat parameter * Allow names of function parameters attached to `this` to be reserved words * Always add a statement to the function body defining a variable with its default value, if it has one, if the variable `== null`; this covers the case when ES doesn’t apply the default value when `null` is passed in as a value, but CoffeeScript expects `null` and `undefined` to act interchangeably * Aftermath of having both `undefined` and `null` trigger the use of default values for parameters with default values * More careful parsing of destructured parameters * Fall back to processing destructured parameters in the function body, to account for `this` or default values within destructured objects * Clean up comments * Restore new bare function test, minus the arrow function part of it * Test that bound/arrow functions aren’t overwriting the `arguments` object, which should refer to the parent scope’s `arguments` (like `this`) * Follow ES2015 spec for parameter default values: `null` gets assigned as as `null`, not the default value * Mimic ES default parameters behavior for parameters after a splat or expansion parameter * Bound functions cannot be generators: remove no-longer-relevant test, add check to throw error if `yield` appears inside a bound (arrow) function * Error for bound generator functions should underline the `yield`
{
} } {
{ { } }
} }{ {
{ }{ } } _____ __ __
{ }{ }{ { } / ____| / _|/ _|
.- { { } { }} -. | | ___ | |_| |_ ___ ___
( { } { } { } } ) | | / _ \| _| _/ _ \/ _ \
|`-..________ ..-'| | |___| (_) | | | || __/ __/
| | \_____\___/|_| |_| \___|\___|
| ;--.
| (__ \ _____ _ _
| | ) ) / ____| (_) | |
| |/ / | (___ ___ _ __ _ _ __ | |_
| ( / \___ \ / __| '__| | '_ \| __|
| |/ ____) | (__| | | | |_) | |_
| | |_____/ \___|_| |_| .__/ \__|
`-.._________..-' | |
|_|
CoffeeScript is a little language that compiles into JavaScript.
Installation
If you have the node package manager, npm, installed:
npm install -g coffee-script
Leave off the -g if you don't wish to install globally. If you don't wish to use npm:
git clone https://github.com/jashkenas/coffeescript.git
sudo coffeescript/bin/cake install
Getting Started
Execute a script:
coffee /path/to/script.coffee
Compile a script:
coffee -c /path/to/script.coffee
For documentation, usage, and examples, see: http://coffeescript.org/
To suggest a feature or report a bug: http://github.com/jashkenas/coffeescript/issues
If you'd like to chat, drop by #coffeescript on Freenode IRC.
The source repository: https://github.com/jashkenas/coffeescript.git
Changelog: http://coffeescript.org/#changelog
Our lovely and talented contributors are listed here: http://github.com/jashkenas/coffeescript/contributors