99 lines
2.6 KiB
JavaScript
99 lines
2.6 KiB
JavaScript
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(function (Prism) {
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// https://freemarker.apache.org/docs/dgui_template_exp.html
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// FTL expression with 4 levels of nesting supported
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var FTL_EXPR = /[^<()"']|\((?:<expr>)*\)|<(?!#--)|<#--(?:[^-]|-(?!->))*-->|"(?:[^\\"]|\\.)*"|'(?:[^\\']|\\.)*'/.source;
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for (var i = 0; i < 2; i++) {
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FTL_EXPR = FTL_EXPR.replace(/<expr>/g, function () { return FTL_EXPR; });
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}
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FTL_EXPR = FTL_EXPR.replace(/<expr>/g, /[^\s\S]/.source);
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var ftl = {
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'comment': /<#--[\s\S]*?-->/,
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'string': [
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{
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// raw string
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pattern: /\br("|')(?:(?!\1)[^\\]|\\.)*\1/,
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greedy: true
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},
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{
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pattern: RegExp(/("|')(?:(?!\1|\$\{)[^\\]|\\.|\$\{(?:(?!\})(?:<expr>))*\})*\1/.source.replace(/<expr>/g, function () { return FTL_EXPR; })),
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greedy: true,
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inside: {
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'interpolation': {
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pattern: RegExp(/((?:^|[^\\])(?:\\\\)*)\$\{(?:(?!\})(?:<expr>))*\}/.source.replace(/<expr>/g, function () { return FTL_EXPR; })),
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lookbehind: true,
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inside: {
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'interpolation-punctuation': {
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pattern: /^\$\{|\}$/,
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alias: 'punctuation'
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},
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rest: null
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}
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}
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}
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}
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],
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'keyword': /\b(?:as)\b/,
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'boolean': /\b(?:false|true)\b/,
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'builtin-function': {
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pattern: /((?:^|[^?])\?\s*)\w+/,
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lookbehind: true,
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alias: 'function'
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},
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'function': /\b\w+(?=\s*\()/,
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'number': /\b\d+(?:\.\d+)?\b/,
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'operator': /\.\.[<*!]?|->|--|\+\+|&&|\|\||\?{1,2}|[-+*/%!=<>]=?|\b(?:gt|gte|lt|lte)\b/,
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'punctuation': /[,;.:()[\]{}]/
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};
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ftl.string[1].inside.interpolation.inside.rest = ftl;
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Prism.languages.ftl = {
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'ftl-comment': {
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// the pattern is shortened to be more efficient
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pattern: /^<#--[\s\S]*/,
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alias: 'comment'
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},
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'ftl-directive': {
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pattern: /^<[\s\S]+>$/,
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inside: {
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'directive': {
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pattern: /(^<\/?)[#@][a-z]\w*/i,
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lookbehind: true,
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alias: 'keyword'
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},
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'punctuation': /^<\/?|\/?>$/,
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'content': {
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pattern: /\s*\S[\s\S]*/,
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alias: 'ftl',
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inside: ftl
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}
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}
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},
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'ftl-interpolation': {
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pattern: /^\$\{[\s\S]*\}$/,
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inside: {
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'punctuation': /^\$\{|\}$/,
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'content': {
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pattern: /\s*\S[\s\S]*/,
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alias: 'ftl',
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inside: ftl
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}
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}
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}
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};
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Prism.hooks.add('before-tokenize', function (env) {
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// eslint-disable-next-line regexp/no-useless-lazy
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var pattern = RegExp(/<#--[\s\S]*?-->|<\/?[#@][a-zA-Z](?:<expr>)*?>|\$\{(?:<expr>)*?\}/.source.replace(/<expr>/g, function () { return FTL_EXPR; }), 'gi');
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Prism.languages['markup-templating'].buildPlaceholders(env, 'ftl', pattern);
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});
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Prism.hooks.add('after-tokenize', function (env) {
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Prism.languages['markup-templating'].tokenizePlaceholders(env, 'ftl');
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});
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}(Prism));
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