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coffeescript.js
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coffeescript.js
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/*
Language: CoffeeScript
Author: Dmytrii Nagirniak <dnagir@gmail.com>
Contributors: Oleg Efimov <efimovov@gmail.com>, Cédric Néhémie <cedric.nehemie@gmail.com>
Description: CoffeeScript is a programming language that transcompiles to JavaScript. For info about language see http://coffeescript.org/
Category: common, scripting
Website: https://coffeescript.org
*/
import * as ECMAScript from "./lib/ecmascript";
export default function(hljs) {
var COFFEE_BUILT_INS = [
'npm',
'print'
];
var COFFEE_LITERALS = [
'yes',
'no',
'on',
'off'
];
var COFFEE_KEYWORDS = [
'then',
'unless',
'until',
'loop',
'by',
'when',
'and',
'or',
'is',
'isnt',
'not'
];
var NOT_VALID_KEYWORDS = [
"var",
"const",
"let",
"function",
"static"
];
var excluding = (list) =>
(kw) => !list.includes(kw);
var KEYWORDS = {
keyword: ECMAScript.KEYWORDS.concat(COFFEE_KEYWORDS).filter(excluding(NOT_VALID_KEYWORDS)).join(" "),
literal: ECMAScript.LITERALS.concat(COFFEE_LITERALS).join(" "),
built_in: ECMAScript.BUILT_INS.concat(COFFEE_BUILT_INS).join(" ")
};
var JS_IDENT_RE = '[A-Za-z$_][0-9A-Za-z$_]*';
var SUBST = {
className: 'subst',
begin: /#\{/, end: /}/,
keywords: KEYWORDS
};
var EXPRESSIONS = [
hljs.BINARY_NUMBER_MODE,
hljs.inherit(hljs.C_NUMBER_MODE, {starts: {end: '(\\s*/)?', relevance: 0}}), // a number tries to eat the following slash to prevent treating it as a regexp
{
className: 'string',
variants: [
{
begin: /'''/, end: /'''/,
contains: [hljs.BACKSLASH_ESCAPE]
},
{
begin: /'/, end: /'/,
contains: [hljs.BACKSLASH_ESCAPE]
},
{
begin: /"""/, end: /"""/,
contains: [hljs.BACKSLASH_ESCAPE, SUBST]
},
{
begin: /"/, end: /"/,
contains: [hljs.BACKSLASH_ESCAPE, SUBST]
}
]
},
{
className: 'regexp',
variants: [
{
begin: '///', end: '///',
contains: [SUBST, hljs.HASH_COMMENT_MODE]
},
{
begin: '//[gim]{0,3}(?=\\W)',
relevance: 0
},
{
// regex can't start with space to parse x / 2 / 3 as two divisions
// regex can't start with *, and it supports an "illegal" in the main mode
begin: /\/(?![ *]).*?(?![\\]).\/[gim]{0,3}(?=\W)/
}
]
},
{
begin: '@' + JS_IDENT_RE // relevance booster
},
{
subLanguage: 'javascript',
excludeBegin: true, excludeEnd: true,
variants: [
{
begin: '```', end: '```',
},
{
begin: '`', end: '`',
}
]
}
];
SUBST.contains = EXPRESSIONS;
var TITLE = hljs.inherit(hljs.TITLE_MODE, {begin: JS_IDENT_RE});
var PARAMS_RE = '(\\(.*\\))?\\s*\\B[-=]>';
var PARAMS = {
className: 'params',
begin: '\\([^\\(]', returnBegin: true,
/* We need another contained nameless mode to not have every nested
pair of parens to be called "params" */
contains: [{
begin: /\(/, end: /\)/,
keywords: KEYWORDS,
contains: ['self'].concat(EXPRESSIONS)
}]
};
return {
name: 'CoffeeScript',
aliases: ['coffee', 'cson', 'iced'],
keywords: KEYWORDS,
illegal: /\/\*/,
contains: EXPRESSIONS.concat([
hljs.COMMENT('###', '###'),
hljs.HASH_COMMENT_MODE,
{
className: 'function',
begin: '^\\s*' + JS_IDENT_RE + '\\s*=\\s*' + PARAMS_RE, end: '[-=]>',
returnBegin: true,
contains: [TITLE, PARAMS]
},
{
// anonymous function start
begin: /[:\(,=]\s*/,
relevance: 0,
contains: [
{
className: 'function',
begin: PARAMS_RE, end: '[-=]>',
returnBegin: true,
contains: [PARAMS]
}
]
},
{
className: 'class',
beginKeywords: 'class',
end: '$',
illegal: /[:="\[\]]/,
contains: [
{
beginKeywords: 'extends',
endsWithParent: true,
illegal: /[:="\[\]]/,
contains: [TITLE]
},
TITLE
]
},
{
begin: JS_IDENT_RE + ':', end: ':',
returnBegin: true, returnEnd: true,
relevance: 0
}
])
};
}