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/*
Language: Crystal
Author: TSUYUSATO Kitsune <make.just.on@gmail.com>
Website: https://crystal-lang.org
*/
/** @type LanguageFn */
function crystal(hljs) {
var INT_SUFFIX = '(_?[ui](8|16|32|64|128))?';
var FLOAT_SUFFIX = '(_?f(32|64))?';
var CRYSTAL_IDENT_RE = '[a-zA-Z_]\\w*[!?=]?';
var CRYSTAL_METHOD_RE = '[a-zA-Z_]\\w*[!?=]?|[-+~]@|<<|>>|[=!]~|===?|<=>|[<>]=?|\\*\\*|[-/+%^&*~|]|//|//=|&[-+*]=?|&\\*\\*|\\[\\][=?]?';
var CRYSTAL_PATH_RE = '[A-Za-z_]\\w*(::\\w+)*(\\?|!)?';
var CRYSTAL_KEYWORDS = {
$pattern: CRYSTAL_IDENT_RE,
keyword:
'abstract alias annotation as as? asm begin break case class def do else elsif end ensure enum extend for fun if ' +
'include instance_sizeof is_a? lib macro module next nil? of out pointerof private protected rescue responds_to? ' +
'return require select self sizeof struct super then type typeof union uninitialized unless until verbatim when while with yield ' +
'__DIR__ __END_LINE__ __FILE__ __LINE__',
literal: 'false nil true'
};
var SUBST = {
className: 'subst',
begin: /#\{/, end: /\}/,
keywords: CRYSTAL_KEYWORDS
};
var EXPANSION = {
className: 'template-variable',
variants: [
{begin: '\\{\\{', end: '\\}\\}'},
{begin: '\\{%', end: '%\\}'}
],
keywords: CRYSTAL_KEYWORDS
};
function recursiveParen(begin, end) {
var
contains = [{begin: begin, end: end}];
contains[0].contains = contains;
return contains;
}
var STRING = {
className: 'string',
contains: [hljs.BACKSLASH_ESCAPE, SUBST],
variants: [
{begin: /'/, end: /'/},
{begin: /"/, end: /"/},
{begin: /`/, end: /`/},
{begin: '%[Qwi]?\\(', end: '\\)', contains: recursiveParen('\\(', '\\)')},
{begin: '%[Qwi]?\\[', end: '\\]', contains: recursiveParen('\\[', '\\]')},
{begin: '%[Qwi]?\\{', end: /\}/, contains: recursiveParen(/\{/, /\}/)},
{begin: '%[Qwi]?<', end: '>', contains: recursiveParen('<', '>')},
{begin: '%[Qwi]?\\|', end: '\\|'},
{begin: /<<-\w+$/, end: /^\s*\w+$/},
],
relevance: 0,
};
var Q_STRING = {
className: 'string',
variants: [
{begin: '%q\\(', end: '\\)', contains: recursiveParen('\\(', '\\)')},
{begin: '%q\\[', end: '\\]', contains: recursiveParen('\\[', '\\]')},
{begin: '%q\\{', end: /\}/, contains: recursiveParen(/\{/, /\}/)},
{begin: '%q<', end: '>', contains: recursiveParen('<', '>')},
{begin: '%q\\|', end: '\\|'},
{begin: /<<-'\w+'$/, end: /^\s*\w+$/},
],
relevance: 0,
};
var REGEXP = {
begin: '(?!%\\})(' + hljs.RE_STARTERS_RE + '|\\n|\\b(case|if|select|unless|until|when|while)\\b)\\s*',
keywords: 'case if select unless until when while',
contains: [
{
className: 'regexp',
contains: [hljs.BACKSLASH_ESCAPE, SUBST],
variants: [
{begin: '//[a-z]*', relevance: 0},
{begin: '/(?!\\/)', end: '/[a-z]*'},
]
}
],
relevance: 0
};
var REGEXP2 = {
className: 'regexp',
contains: [hljs.BACKSLASH_ESCAPE, SUBST],
variants: [
{begin: '%r\\(', end: '\\)', contains: recursiveParen('\\(', '\\)')},
{begin: '%r\\[', end: '\\]', contains: recursiveParen('\\[', '\\]')},
{begin: '%r\\{', end: /\}/, contains: recursiveParen(/\{/, /\}/)},
{begin: '%r<', end: '>', contains: recursiveParen('<', '>')},
{begin: '%r\\|', end: '\\|'},
],
relevance: 0
};
var ATTRIBUTE = {
className: 'meta',
begin: '@\\[', end: '\\]',
contains: [
hljs.inherit(hljs.QUOTE_STRING_MODE, {className: 'meta-string'})
]
};
var CRYSTAL_DEFAULT_CONTAINS = [
EXPANSION,
STRING,
Q_STRING,
REGEXP2,
REGEXP,
ATTRIBUTE,
hljs.HASH_COMMENT_MODE,
{
className: 'class',
beginKeywords: 'class module struct', end: '$|;',
illegal: /=/,
contains: [
hljs.HASH_COMMENT_MODE,
hljs.inherit(hljs.TITLE_MODE, {begin: CRYSTAL_PATH_RE}),
{begin: '<'} // relevance booster for inheritance
]
},
{
className: 'class',
beginKeywords: 'lib enum union', end: '$|;',
illegal: /=/,
contains: [
hljs.HASH_COMMENT_MODE,
hljs.inherit(hljs.TITLE_MODE, {begin: CRYSTAL_PATH_RE}),
],
relevance: 10
},
{
beginKeywords: 'annotation', end: '$|;',
illegal: /=/,
contains: [
hljs.HASH_COMMENT_MODE,
hljs.inherit(hljs.TITLE_MODE, {begin: CRYSTAL_PATH_RE}),
],
relevance: 10
},
{
className: 'function',
beginKeywords: 'def', end: /\B\b/,
contains: [
hljs.inherit(hljs.TITLE_MODE, {
begin: CRYSTAL_METHOD_RE,
endsParent: true
})
]
},
{
className: 'function',
beginKeywords: 'fun macro', end: /\B\b/,
contains: [
hljs.inherit(hljs.TITLE_MODE, {
begin: CRYSTAL_METHOD_RE,
endsParent: true
})
],
relevance: 2
},
{
className: 'symbol',
begin: hljs.UNDERSCORE_IDENT_RE + '(!|\\?)?:',
relevance: 0
},
{
className: 'symbol',
begin: ':',
contains: [STRING, {begin: CRYSTAL_METHOD_RE}],
relevance: 0
},
{
className: 'number',
variants: [
{ begin: '\\b0b([01_]+)' + INT_SUFFIX },
{ begin: '\\b0o([0-7_]+)' + INT_SUFFIX },
{ begin: '\\b0x([A-Fa-f0-9_]+)' + INT_SUFFIX },
{ begin: '\\b([1-9][0-9_]*[0-9]|[0-9])(\\.[0-9][0-9_]*)?([eE]_?[-+]?[0-9_]*)?' + FLOAT_SUFFIX + '(?!_)' },
{ begin: '\\b([1-9][0-9_]*|0)' + INT_SUFFIX }
],
relevance: 0
}
];
SUBST.contains = CRYSTAL_DEFAULT_CONTAINS;
EXPANSION.contains = CRYSTAL_DEFAULT_CONTAINS.slice(1); // without EXPANSION
return {
name: 'Crystal',
aliases: ['cr'],
keywords: CRYSTAL_KEYWORDS,
contains: CRYSTAL_DEFAULT_CONTAINS
};
}
module.exports = crystal;