hexo/node_modules/prismjs/components/prism-regex.js

105 lines
2.3 KiB
JavaScript

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