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prism-dot.js
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prism-dot.js
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// https://www.graphviz.org/doc/info/lang.html
(function (Prism) {
var ID = '(?:' + [
// an identifier
/\b[a-zA-Z_][\w\x80-\x9F\xA1-\xFF]*/.source,
// a number
/-?(?:\.\d+|\b\d+(?:\.\d*)?)/.source,
// a double-quoted string
/"(?:[^\\"]|\\[\s\S])*"/.source,
// HTML-like string
/<(?:[^<>]|(?!<!--)<(?:[^<>"']|"[^"]*"|'[^']*')+>|<!--(?:[^-]|-(?!->))*-->)*>/.source
].join('|') + ')';
var IDInside = {
'markup': {
pattern: /(^<)[\s\S]+(?=>$)/,
lookbehind: true,
alias: ['language-markup', 'language-html', 'language-xml'],
inside: Prism.languages.markup
}
};
/**
* @param {string} source
* @param {string} flags
* @returns {RegExp}
*/
function withID(source, flags) {
return RegExp(source.replace(/<ID>/g, function () { return ID; }), flags);
}
Prism.languages.dot = {
'comment': {
pattern: /\/\/.*|\/\*[\s\S]*?\*\/|^#.*/m,
greedy: true
},
'graph-name': {
pattern: withID(/(\b(?:digraph|graph|subgraph)\s+)<ID>/.source, 'i'),
lookbehind: true,
greedy: true,
alias: 'class-name',
inside: IDInside
},
'attr-value': {
pattern: withID(/(=\s*)<ID>/.source),
lookbehind: true,
greedy: true,
inside: IDInside
},
'attr-name': {
pattern: withID(/([\[;,\s])<ID>(?=\s*=)/.source),
lookbehind: true,
greedy: true,
inside: IDInside
},
'keyword': /\b(?:digraph|edge|graph|node|strict|subgraph)\b/i,
'compass-point': {
pattern: /(:\s*)(?:[ns][ew]?|[ewc])(?![\w\x80-\x9F\xA1-\xFF])/,
lookbehind: true,
alias: 'builtin'
},
'node': {
pattern: withID(/(^|[^\\])<ID>/.source),
lookbehind: true,
greedy: true,
inside: IDInside
},
'operator': /[=:]|-[->]/,
'punctuation': /[\[\]{};,]/
};
Prism.languages.gv = Prism.languages.dot;
}(Prism));