lang-tex.js
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// Copyright (C) 2011 Martin S.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview
* Support for tex highlighting as discussed on
* <a href="http://meta.tex.stackexchange.com/questions/872/text-immediate-following-double-backslashes-is-highlighted-as-macro-inside-a-code/876#876">meta.tex.stackexchange.com</a>.
*
* @author Martin S.
*/
PR['registerLangHandler'](
PR['createSimpleLexer'](
[
// whitespace
[PR['PR_PLAIN'], /^[\t\n\r \xA0]+/, null, '\t\n\r \xA0'],
// all comments begin with '%'
[PR['PR_COMMENT'], /^%[^\r\n]*/, null, '%']
],
[
//[PR['PR_DECLARATION'], /^\\([egx]?def|(new|renew|provide)(command|environment))\b/],
// any command starting with a \ and contains
// either only letters (a-z,A-Z), '@' (internal macros)
[PR['PR_KEYWORD'], /^\\[a-zA-Z@]+/],
// or contains only one character
[PR['PR_KEYWORD'], /^\\./],
// Highlight dollar for math mode and ampersam for tabular
[PR['PR_TYPE'], /^[$&]/],
// numeric measurement values with attached units
[PR['PR_LITERAL'],
/[+-]?(?:\.\d+|\d+(?:\.\d*)?)(cm|em|ex|in|pc|pt|bp|mm)/i],
// punctuation usually occurring within commands
[PR['PR_PUNCTUATION'], /^[{}()\[\]=]+/]
]),
['latex', 'tex']);