89 lines
2.7 KiB
JavaScript
89 lines
2.7 KiB
JavaScript
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Prism.languages['markup-templating'] = {};
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Object.defineProperties(Prism.languages['markup-templating'], {
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buildPlaceholders: {
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// Tokenize all inline templating expressions matching placeholderPattern
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// If the replaceFilter function is provided, it will be called with every match.
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// If it returns false, the match will not be replaced.
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value: function (env, language, placeholderPattern, replaceFilter) {
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if (env.language !== language) {
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return;
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}
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env.tokenStack = [];
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env.code = env.code.replace(placeholderPattern, function(match) {
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if (typeof replaceFilter === 'function' && !replaceFilter(match)) {
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return match;
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}
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var i = env.tokenStack.length;
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// Check for existing strings
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while (env.code.indexOf('___' + language.toUpperCase() + i + '___') !== -1)
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++i;
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// Create a sparse array
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env.tokenStack[i] = match;
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return '___' + language.toUpperCase() + i + '___';
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});
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// Switch the grammar to markup
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env.grammar = Prism.languages.markup;
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}
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},
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tokenizePlaceholders: {
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// Replace placeholders with proper tokens after tokenizing
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value: function (env, language) {
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if (env.language !== language || !env.tokenStack) {
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return;
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}
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// Switch the grammar back
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env.grammar = Prism.languages[language];
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var j = 0;
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var keys = Object.keys(env.tokenStack);
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var walkTokens = function (tokens) {
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if (j >= keys.length) {
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return;
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}
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for (var i = 0; i < tokens.length; i++) {
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var token = tokens[i];
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if (typeof token === 'string' || (token.content && typeof token.content === 'string')) {
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var k = keys[j];
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var t = env.tokenStack[k];
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var s = typeof token === 'string' ? token : token.content;
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var index = s.indexOf('___' + language.toUpperCase() + k + '___');
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if (index > -1) {
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++j;
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var before = s.substring(0, index);
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var middle = new Prism.Token(language, Prism.tokenize(t, env.grammar, language), 'language-' + language, t);
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var after = s.substring(index + ('___' + language.toUpperCase() + k + '___').length);
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var replacement;
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if (before || after) {
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replacement = [before, middle, after].filter(function (v) { return !!v; });
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walkTokens(replacement);
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} else {
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replacement = middle;
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}
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if (typeof token === 'string') {
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Array.prototype.splice.apply(tokens, [i, 1].concat(replacement));
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} else {
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token.content = replacement;
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}
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if (j >= keys.length) {
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break;
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}
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}
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} else if (token.content && typeof token.content !== 'string') {
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walkTokens(token.content);
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}
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}
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};
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walkTokens(env.tokens);
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}
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}
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});
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