120 lines
3.5 KiB
JavaScript
120 lines
3.5 KiB
JavaScript
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/**
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* Original by Aaron Harun: http://aahacreative.com/2012/07/31/php-syntax-highlighting-prism/
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* Modified by Miles Johnson: http://milesj.me
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*
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* Supports the following:
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* - Extends clike syntax
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* - Support for PHP 5.3+ (namespaces, traits, generators, etc)
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* - Smarter constant and function matching
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*
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* Adds the following new token classes:
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* constant, delimiter, variable, function, package
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*/
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Prism.languages.php = Prism.languages.extend('clike', {
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'string': {
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pattern: /(["'])(?:\\[\s\S]|(?!\1)[^\\])*\1/,
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greedy: true
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},
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'keyword': /\b(?:and|or|xor|array|as|break|case|cfunction|class|const|continue|declare|default|die|do|else|elseif|enddeclare|endfor|endforeach|endif|endswitch|endwhile|extends|for|foreach|function|include|include_once|global|if|new|return|static|switch|use|require|require_once|var|while|abstract|interface|public|implements|private|protected|parent|throw|null|echo|print|trait|namespace|final|yield|goto|instanceof|finally|try|catch)\b/i,
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'constant': /\b[A-Z0-9_]{2,}\b/,
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'comment': {
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pattern: /(^|[^\\])(?:\/\*[\s\S]*?\*\/|\/\/.*)/,
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lookbehind: true
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}
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});
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// Shell-like comments are matched after strings, because they are less
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// common than strings containing hashes...
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Prism.languages.insertBefore('php', 'class-name', {
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'shell-comment': {
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pattern: /(^|[^\\])#.*/,
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lookbehind: true,
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alias: 'comment'
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}
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});
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Prism.languages.insertBefore('php', 'keyword', {
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'delimiter': {
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pattern: /\?>|<\?(?:php|=)?/i,
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alias: 'important'
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},
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'variable': /\$\w+\b/i,
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'package': {
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pattern: /(\\|namespace\s+|use\s+)[\w\\]+/,
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lookbehind: true,
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inside: {
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punctuation: /\\/
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}
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}
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});
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// Must be defined after the function pattern
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Prism.languages.insertBefore('php', 'operator', {
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'property': {
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pattern: /(->)[\w]+/,
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lookbehind: true
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}
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});
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// Add HTML support if the markup language exists
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if (Prism.languages.markup) {
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// Tokenize all inline PHP blocks that are wrapped in <?php ?>
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// This allows for easy PHP + markup highlighting
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Prism.hooks.add('before-highlight', function(env) {
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if (env.language !== 'php' || !/(?:<\?php|<\?)/ig.test(env.code)) {
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return;
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}
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env.tokenStack = [];
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env.backupCode = env.code;
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env.code = env.code.replace(/(?:<\?php|<\?)[\s\S]*?(?:\?>|$)/ig, function(match) {
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var i = env.tokenStack.length;
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// Check for existing strings
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while (env.backupCode.indexOf('___PHP' + 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 '___PHP' + 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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// Restore env.code for other plugins (e.g. line-numbers)
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Prism.hooks.add('before-insert', function(env) {
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if (env.language === 'php' && env.backupCode) {
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env.code = env.backupCode;
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delete env.backupCode;
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}
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});
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// Re-insert the tokens after highlighting
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Prism.hooks.add('after-highlight', function(env) {
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if (env.language !== 'php' || !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.php;
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for (var i = 0, keys = Object.keys(env.tokenStack); i < keys.length; ++i) {
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var k = keys[i];
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var t = env.tokenStack[k];
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// The replace prevents $$, $&, $`, $', $n, $nn from being interpreted as special patterns
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env.highlightedCode = env.highlightedCode.replace('___PHP' + k + '___',
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"<span class=\"token php language-php\">" +
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Prism.highlight(t, env.grammar, 'php').replace(/\$/g, '$$$$') +
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"</span>");
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}
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env.element.innerHTML = env.highlightedCode;
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});
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}
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