prism-haml.js
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/* TODO
Handle multiline code after tag
%foo= some |
multiline |
code |
*/
(function(Prism) {
Prism.languages.haml = {
// Multiline stuff should appear before the rest
'multiline-comment': {
pattern: /((?:^|\r?\n|\r)([\t ]*))(?:\/|-#).*((?:\r?\n|\r)\2[\t ]+.+)*/,
lookbehind: true,
alias: 'comment'
},
'multiline-code': [
{
pattern: /((?:^|\r?\n|\r)([\t ]*)(?:[~-]|[&!]?=)).*,[\t ]*((?:\r?\n|\r)\2[\t ]+.*,[\t ]*)*((?:\r?\n|\r)\2[\t ]+.+)/,
lookbehind: true,
inside: {
rest: Prism.languages.ruby
}
},
{
pattern: /((?:^|\r?\n|\r)([\t ]*)(?:[~-]|[&!]?=)).*\|[\t ]*((?:\r?\n|\r)\2[\t ]+.*\|[\t ]*)*/,
lookbehind: true,
inside: {
rest: Prism.languages.ruby
}
}
],
// See at the end of the file for known filters
'filter': {
pattern: /((?:^|\r?\n|\r)([\t ]*)):[\w-]+((?:\r?\n|\r)(?:\2[\t ]+.+|\s*?(?=\r?\n|\r)))+/,
lookbehind: true,
inside: {
'filter-name': {
pattern: /^:[\w-]+/,
alias: 'variable'
}
}
},
'markup': {
pattern: /((?:^|\r?\n|\r)[\t ]*)<.+/,
lookbehind: true,
inside: {
rest: Prism.languages.markup
}
},
'doctype': {
pattern: /((?:^|\r?\n|\r)[\t ]*)!!!(?: .+)?/,
lookbehind: true
},
'tag': {
// Allows for one nested group of braces
pattern: /((?:^|\r?\n|\r)[\t ]*)[%.#][\w\-#.]*[\w\-](?:\([^)]+\)|\{(?:\{[^}]+\}|[^}])+\}|\[[^\]]+\])*[\/<>]*/,
lookbehind: true,
inside: {
'attributes': [
{
// Lookbehind tries to prevent interpolations for breaking it all
// Allows for one nested group of braces
pattern: /(^|[^#])\{(?:\{[^}]+\}|[^}])+\}/,
lookbehind: true,
inside: {
rest: Prism.languages.ruby
}
},
{
pattern: /\([^)]+\)/,
inside: {
'attr-value': {
pattern: /(=\s*)(?:"(?:\\?.)*?"|[^)\s]+)/,
lookbehind: true
},
'attr-name': /[\w:-]+(?=\s*!?=|\s*[,)])/,
'punctuation': /[=(),]/
}
},
{
pattern: /\[[^\]]+\]/,
inside: {
rest: Prism.languages.ruby
}
}
],
'punctuation': /[<>]/
}
},
'code': {
pattern: /((?:^|\r?\n|\r)[\t ]*(?:[~-]|[&!]?=)).+/,
lookbehind: true,
inside: {
rest: Prism.languages.ruby
}
},
// Interpolations in plain text
'interpolation': {
pattern: /#\{[^}]+\}/,
inside: {
'delimiter': {
pattern: /^#\{|\}$/,
alias: 'punctuation'
},
rest: Prism.languages.ruby
}
},
'punctuation': {
pattern: /((?:^|\r?\n|\r)[\t ]*)[~=\-&!]+/,
lookbehind: true
}
};
var filter_pattern = '((?:^|\\r?\\n|\\r)([\\t ]*)):{{filter_name}}((?:\\r?\\n|\\r)(?:\\2[\\t ]+.+|\\s*?(?=\\r?\\n|\\r)))+';
// Non exhaustive list of available filters and associated languages
var filters = [
'css',
{filter:'coffee',language:'coffeescript'},
'erb',
'javascript',
'less',
'markdown',
'ruby',
'scss',
'textile'
];
var all_filters = {};
for (var i = 0, l = filters.length; i < l; i++) {
var filter = filters[i];
filter = typeof filter === 'string' ? {filter: filter, language: filter} : filter;
if (Prism.languages[filter.language]) {
all_filters['filter-' + filter.filter] = {
pattern: RegExp(filter_pattern.replace('{{filter_name}}', filter.filter)),
lookbehind: true,
inside: {
'filter-name': {
pattern: /^:[\w-]+/,
alias: 'variable'
},
rest: Prism.languages[filter.language]
}
}
}
}
Prism.languages.insertBefore('haml', 'filter', all_filters);
}(Prism));