73bcce88
 luigser
COMPONENTS
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(function(Prism) {
var handlebars_pattern = /\{\{\{[\w\W]+?\}\}\}|\{\{[\w\W]+?\}\}/g;
Prism.languages.handlebars = Prism.languages.extend('markup', {
'handlebars': {
pattern: handlebars_pattern,
inside: {
'delimiter': {
pattern: /^\{\{\{?|\}\}\}?$/i,
alias: 'punctuation'
},
'string': /(["'])(\\?.)+?\1/,
'number': /\b-?(0x[\dA-Fa-f]+|\d*\.?\d+([Ee]-?\d+)?)\b/,
'boolean': /\b(true|false)\b/,
'block': {
pattern: /^(\s*~?\s*)[#\/]\S+/i,
lookbehind: true,
alias: 'keyword'
},
'brackets': {
pattern: /\[[^\]]+\]/,
inside: {
punctuation: /\[|\]/,
variable: /[\w\W]+/
}
},
'punctuation': /[!"#%&'()*+,.\/;<=>@\[\\\]^`{|}~]/,
'variable': /[^!"#%&'()*+,.\/;<=>@\[\\\]^`{|}~]+/
}
}
});
// Comments are inserted at top so that they can
// surround markup
Prism.languages.insertBefore('handlebars', 'tag', {
'handlebars-comment': {
pattern: /\{\{![\w\W]*?\}\}/,
alias: ['handlebars','comment']
}
});
// Tokenize all inline Handlebars expressions that are wrapped in {{ }} or {{{ }}}
// This allows for easy Handlebars + markup highlighting
Prism.hooks.add('before-highlight', function(env) {
if (env.language !== 'handlebars') {
return;
}
env.tokenStack = [];
env.backupCode = env.code;
env.code = env.code.replace(handlebars_pattern, function(match) {
env.tokenStack.push(match);
return '___HANDLEBARS' + env.tokenStack.length + '___';
});
});
// Restore env.code for other plugins (e.g. line-numbers)
Prism.hooks.add('before-insert', function(env) {
if (env.language === 'handlebars') {
env.code = env.backupCode;
delete env.backupCode;
}
});
// Re-insert the tokens after highlighting
// and highlight them with defined grammar
Prism.hooks.add('after-highlight', function(env) {
if (env.language !== 'handlebars') {
return;
}
for (var i = 0, t; t = env.tokenStack[i]; i++) {
env.highlightedCode = env.highlightedCode.replace('___HANDLEBARS' + (i + 1) + '___', Prism.highlight(t, env.grammar, 'handlebars'));
}
env.element.innerHTML = env.highlightedCode;
});
}(Prism));
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