prism-crystal.js
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(function(Prism) {
Prism.languages.crystal = Prism.languages.extend('ruby', {
keyword: [
/\b(?:abstract|alias|as|asm|begin|break|case|class|def|do|else|elsif|end|ensure|enum|extend|for|fun|if|ifdef|include|instance_sizeof|lib|macro|module|next|of|out|pointerof|private|protected|rescue|return|require|self|sizeof|struct|super|then|type|typeof|union|unless|until|when|while|with|yield|__DIR__|__FILE__|__LINE__)\b/,
{
pattern: /(\.\s*)(?:is_a|responds_to)\?/,
lookbehind: true
}
],
number: /\b(?:0b[01_]*[01]|0o[0-7_]*[0-7]|0x[0-9a-fA-F_]*[0-9a-fA-F]|(?:[0-9](?:[0-9_]*[0-9])?)(?:\.[0-9_]*[0-9])?(?:[eE][+-]?[0-9_]*[0-9])?)(?:_(?:[uif](?:8|16|32|64))?)?\b/,
});
var rest = Prism.util.clone(Prism.languages.crystal);
Prism.languages.insertBefore('crystal', 'string', {
attribute: {
pattern: /@\[.+?\]/,
alias: 'attr-name',
inside: {
delimiter: {
pattern: /^@\[|\]$/,
alias: 'tag'
},
rest: rest
}
},
expansion: [
{
pattern: /\{\{.+?\}\}/,
inside: {
delimiter: {
pattern: /^\{\{|\}\}$/,
alias: 'tag'
},
rest: rest
}
},
{
pattern: /\{%.+?%\}/,
inside: {
delimiter: {
pattern: /^\{%|%\}$/,
alias: 'tag'
},
rest: rest
}
}
]
});
}(Prism));