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// https://www.graphviz.org/doc/info/lang.html
(function (Prism) {
var ID =
'(?:' +
[
// an identifier
/[a-zA-Z_\x80-\uFFFF][\w\x80-\uFFFF]*/.source,
// a number
/-?(?:\.\d+|\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)[ \t\r\n]+)<ID>/.source,
'i'
),
lookbehind: true,
greedy: true,
alias: 'class-name',
inside: IDInside,
},
'attr-value': {
pattern: withID(/(=[ \t\r\n]*)<ID>/.source),
lookbehind: true,
greedy: true,
inside: IDInside,
},
'attr-name': {
pattern: withID(/([\[;, \t\r\n])<ID>(?=[ \t\r\n]*=)/.source),
lookbehind: true,
greedy: true,
inside: IDInside,
},
keyword: /\b(?:digraph|edge|graph|node|strict|subgraph)\b/i,
'compass-point': {
pattern: /(:[ \t\r\n]*)(?:[ewc_]|[ns][ew]?)(?![\w\x80-\uFFFF])/,
lookbehind: true,
alias: 'builtin',
},
node: {
pattern: withID(/(^|[^-.\w\x80-\uFFFF\\])<ID>/.source),
lookbehind: true,
greedy: true,
inside: IDInside,
},
operator: /[=:]|-[->]/,
punctuation: /[\[\]{};,]/,
};
Prism.languages.gv = Prism.languages.dot;
})(Prism);
|
