128 lines
2.7 KiB
JavaScript
128 lines
2.7 KiB
JavaScript
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(function (Prism) {
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var specialEscape = {
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pattern: /\\[\\(){}[\]^$+*?|.]/,
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alias: 'escape'
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};
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var escape = /\\(?:x[\da-fA-F]{2}|u[\da-fA-F]{4}|u\{[\da-fA-F]+\}|c[a-zA-Z]|0[0-7]{0,2}|[123][0-7]{2}|.)/;
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var charClass = {
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pattern: /\.|\\[wsd]|\\p{[^{}]+}/i,
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alias: 'class-name'
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};
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var charClassWithoutDot = {
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pattern: /\\[wsd]|\\p{[^{}]+}/i,
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alias: 'class-name'
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};
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var rangeChar = '(?:[^\\\\-]|' + escape.source + ')';
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var range = RegExp(rangeChar + '-' + rangeChar);
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// the name of a capturing group
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var groupName = {
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pattern: /(<|')[^<>']+(?=[>']$)/,
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lookbehind: true,
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alias: 'variable'
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};
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Prism.languages.regex = {
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'charset': {
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pattern: /((?:^|[^\\])(?:\\\\)*)\[(?:[^\\\]]|\\[\s\S])*\]/,
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lookbehind: true,
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inside: {
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'charset-negation': {
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pattern: /(^\[)\^/,
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lookbehind: true,
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alias: 'operator'
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},
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'charset-punctuation': {
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pattern: /^\[|\]$/,
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alias: 'punctuation'
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},
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'range': {
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pattern: range,
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inside: {
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'escape': escape,
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'range-punctuation': {
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pattern: /-/,
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alias: 'operator'
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}
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}
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},
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'special-escape': specialEscape,
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'charclass': charClassWithoutDot,
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'escape': escape
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}
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},
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'special-escape': specialEscape,
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'charclass': charClass,
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'backreference': [
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{
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// a backreference which is not an octal escape
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pattern: /\\(?![123][0-7]{2})[1-9]/,
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alias: 'keyword'
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},
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{
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pattern: /\\k<[^<>']+>/,
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alias: 'keyword',
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inside: {
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'group-name': groupName
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}
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}
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],
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'anchor': {
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pattern: /[$^]|\\[ABbGZz]/,
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alias: 'function'
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},
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'escape': escape,
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'group': [
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{
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// https://docs.oracle.com/javase/10/docs/api/java/util/regex/Pattern.html
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// https://docs.microsoft.com/en-us/dotnet/standard/base-types/regular-expression-language-quick-reference?view=netframework-4.7.2#grouping-constructs
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// (), (?<name>), (?'name'), (?>), (?:), (?=), (?!), (?<=), (?<!), (?is-m), (?i-m:)
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pattern: /\((?:\?(?:<[^<>']+>|'[^<>']+'|[>:]|<?[=!]|[idmnsuxU]+(?:-[idmnsuxU]+)?:?))?/,
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alias: 'punctuation',
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inside: {
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'group-name': groupName
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}
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},
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{
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pattern: /\)/,
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alias: 'punctuation'
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}
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],
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'quantifier': {
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pattern: /(?:[+*?]|\{(?:\d+,?\d*)\})[?+]?/,
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alias: 'number'
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},
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'alternation': {
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pattern: /\|/,
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alias: 'keyword'
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}
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};
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[
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'actionscript',
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'coffescript',
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'flow',
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'javascript',
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'typescript',
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'vala'
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].forEach(function (lang) {
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var grammar = Prism.languages[lang];
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if (grammar) {
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grammar['regex'].inside = {
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'language-regex': {
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pattern: /^(\/)[\s\S]+(?=\/[a-z]*$)/i,
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lookbehind: true,
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inside: Prism.languages.regex
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},
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'regex-flags': /[a-z]+$/i,
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'regex-delimiter': /^\/|\/$/,
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};
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}
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});
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}(Prism))
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