prism-php.js
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/**
* Original by Aaron Harun: http://aahacreative.com/2012/07/31/php-syntax-highlighting-prism/
* Modified by Miles Johnson: http://milesj.me
*
* Supports the following:
* - Extends clike syntax
* - Support for PHP 5.3+ (namespaces, traits, generators, etc)
* - Smarter constant and function matching
*
* Adds the following new token classes:
* constant, delimiter, variable, function, package
*/
Prism.languages.php = Prism.languages.extend('clike', {
'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,
'constant': /\b[A-Z0-9_]{2,}\b/,
'comment': {
pattern: /(^|[^\\])(?:\/\*[\w\W]*?\*\/|\/\/.*)/,
lookbehind: true
}
});
// Shell-like comments are matched after strings, because they are less
// common than strings containing hashes...
Prism.languages.insertBefore('php', 'class-name', {
'shell-comment': {
pattern: /(^|[^\\])#.*/,
lookbehind: true,
alias: 'comment'
}
});
Prism.languages.insertBefore('php', 'keyword', {
'delimiter': /\?>|<\?(?:php)?/i,
'variable': /\$\w+\b/i,
'package': {
pattern: /(\\|namespace\s+|use\s+)[\w\\]+/,
lookbehind: true,
inside: {
punctuation: /\\/
}
}
});
// Must be defined after the function pattern
Prism.languages.insertBefore('php', 'operator', {
'property': {
pattern: /(->)[\w]+/,
lookbehind: true
}
});
// Add HTML support of the markup language exists
if (Prism.languages.markup) {
// Tokenize all inline PHP blocks that are wrapped in <?php ?>
// This allows for easy PHP + markup highlighting
Prism.hooks.add('before-highlight', function(env) {
if (env.language !== 'php') {
return;
}
env.tokenStack = [];
env.backupCode = env.code;
env.code = env.code.replace(/(?:<\?php|<\?)[\w\W]*?(?:\?>)/ig, function(match) {
env.tokenStack.push(match);
return '{{{PHP' + env.tokenStack.length + '}}}';
});
});
// Restore env.code for other plugins (e.g. line-numbers)
Prism.hooks.add('before-insert', function(env) {
if (env.language === 'php') {
env.code = env.backupCode;
delete env.backupCode;
}
});
// Re-insert the tokens after highlighting
Prism.hooks.add('after-highlight', function(env) {
if (env.language !== 'php') {
return;
}
for (var i = 0, t; t = env.tokenStack[i]; i++) {
// The replace prevents $$, $&, $`, $', $n, $nn from being interpreted as special patterns
env.highlightedCode = env.highlightedCode.replace('{{{PHP' + (i + 1) + '}}}', Prism.highlight(t, env.grammar, 'php').replace(/\$/g, '$$$$'));
}
env.element.innerHTML = env.highlightedCode;
});
// Wrap tokens in classes that are missing them
Prism.hooks.add('wrap', function(env) {
if (env.language === 'php' && env.type === 'markup') {
env.content = env.content.replace(/(\{\{\{PHP[0-9]+\}\}\})/g, "<span class=\"token php\">$1</span>");
}
});
// Add the rules before all others
Prism.languages.insertBefore('php', 'comment', {
'markup': {
pattern: /<[^?]\/?(.*?)>/,
inside: Prism.languages.markup
},
'php': /\{\{\{PHP[0-9]+\}\}\}/
});
}