127 lines
3.9 KiB
JavaScript
127 lines
3.9 KiB
JavaScript
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(function(Prism) {
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var javascript = Prism.util.clone(Prism.languages.javascript);
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Prism.languages.jsx = Prism.languages.extend('markup', javascript);
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Prism.languages.jsx.tag.pattern= /<\/?(?:[\w.:-]+\s*(?:\s+(?:[\w.:-]+(?:=(?:("|')(?:\\[\s\S]|(?!\1)[^\\])*\1|[^\s{'">=]+|\{(?:\{(?:\{[^}]*\}|[^{}])*\}|[^{}])+\}))?|\{\.{3}[a-z_$][\w$]*(?:\.[a-z_$][\w$]*)*\}))*\s*\/?)?>/i;
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Prism.languages.jsx.tag.inside['tag'].pattern = /^<\/?[^\s>\/]*/i;
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Prism.languages.jsx.tag.inside['attr-value'].pattern = /=(?!\{)(?:("|')(?:\\[\s\S]|(?!\1)[^\\])*\1|[^\s'">]+)/i;
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Prism.languages.jsx.tag.inside['tag'].inside['class-name'] = /^[A-Z]\w*$/;
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Prism.languages.insertBefore('inside', 'attr-name', {
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'spread': {
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pattern: /\{\.{3}[a-z_$][\w$]*(?:\.[a-z_$][\w$]*)*\}/,
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inside: {
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'punctuation': /\.{3}|[{}.]/,
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'attr-value': /\w+/
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}
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}
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}, Prism.languages.jsx.tag);
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Prism.languages.insertBefore('inside', 'attr-value',{
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'script': {
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// Allow for two levels of nesting
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pattern: /=(\{(?:\{(?:\{[^}]*\}|[^}])*\}|[^}])+\})/i,
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inside: {
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'script-punctuation': {
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pattern: /^=(?={)/,
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alias: 'punctuation'
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},
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rest: Prism.languages.jsx
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},
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'alias': 'language-javascript'
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}
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}, Prism.languages.jsx.tag);
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// The following will handle plain text inside tags
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var stringifyToken = function (token) {
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if (!token) {
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return '';
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}
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if (typeof token === 'string') {
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return token;
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}
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if (typeof token.content === 'string') {
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return token.content;
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}
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return token.content.map(stringifyToken).join('');
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};
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var walkTokens = function (tokens) {
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var openedTags = [];
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for (var i = 0; i < tokens.length; i++) {
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var token = tokens[i];
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var notTagNorBrace = false;
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if (typeof token !== 'string') {
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if (token.type === 'tag' && token.content[0] && token.content[0].type === 'tag') {
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// We found a tag, now find its kind
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if (token.content[0].content[0].content === '</') {
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// Closing tag
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if (openedTags.length > 0 && openedTags[openedTags.length - 1].tagName === stringifyToken(token.content[0].content[1])) {
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// Pop matching opening tag
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openedTags.pop();
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}
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} else {
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if (token.content[token.content.length - 1].content === '/>') {
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// Autoclosed tag, ignore
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} else {
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// Opening tag
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openedTags.push({
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tagName: stringifyToken(token.content[0].content[1]),
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openedBraces: 0
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});
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}
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}
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} else if (openedTags.length > 0 && token.type === 'punctuation' && token.content === '{') {
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// Here we might have entered a JSX context inside a tag
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openedTags[openedTags.length - 1].openedBraces++;
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} else if (openedTags.length > 0 && openedTags[openedTags.length - 1].openedBraces > 0 && token.type === 'punctuation' && token.content === '}') {
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// Here we might have left a JSX context inside a tag
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openedTags[openedTags.length - 1].openedBraces--;
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} else {
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notTagNorBrace = true
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}
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}
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if (notTagNorBrace || typeof token === 'string') {
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if (openedTags.length > 0 && openedTags[openedTags.length - 1].openedBraces === 0) {
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// Here we are inside a tag, and not inside a JSX context.
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// That's plain text: drop any tokens matched.
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var plainText = stringifyToken(token);
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// And merge text with adjacent text
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if (i < tokens.length - 1 && (typeof tokens[i + 1] === 'string' || tokens[i + 1].type === 'plain-text')) {
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plainText += stringifyToken(tokens[i + 1]);
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tokens.splice(i + 1, 1);
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}
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if (i > 0 && (typeof tokens[i - 1] === 'string' || tokens[i - 1].type === 'plain-text')) {
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plainText = stringifyToken(tokens[i - 1]) + plainText;
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tokens.splice(i - 1, 1);
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i--;
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}
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tokens[i] = new Prism.Token('plain-text', plainText, null, plainText);
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}
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}
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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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Prism.hooks.add('after-tokenize', function (env) {
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if (env.language !== 'jsx' && env.language !== 'tsx') {
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return;
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}
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walkTokens(env.tokens);
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});
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}(Prism));
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