es2-code-prettify
Version:
Google Code Prettify for ES2
61 lines (58 loc) • 2.65 kB
JavaScript
/**
* @license
* Copyright (C) 2008 Google Inc.
*
* 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
* Registers a language handler for Lua.
*
*
* To use, include prettify.js and this file in your HTML page.
* Then put your code in an HTML tag like
* <pre class="prettyprint lang-lua">(my Lua code)</pre>
*
*
* I used http://www.lua.org/manual/5.1/manual.html#2.1
* Because of the long-bracket concept used in strings and comments, Lua does
* not have a regular lexical grammar, but luckily it fits within the space
* of irregular grammars supported by javascript regular expressions.
*
* @author mikesamuel@gmail.com
*/
registerLangHandler(
createSimpleLexer(
[
// Whitespace
[PR_PLAIN, RegExpProxy( "^[\\t\\n\\r \\xA0]+" ), null, '\t\n\r \xA0'],
// A double or single quoted, possibly multi-line, string.
[PR_STRING, RegExpProxy( "^(?:\\\"(?:[^\\\"\\\\]|\\\\[\\s\\S])*(?:\\\"|$)|\\'(?:[^\\'\\\\]|\\\\[\\s\\S])*(?:\\'|$))" ), null, '"\'']
],
[
// A comment is either a line comment that starts with two dashes, or
// two dashes preceding a long bracketed block.
[PR_COMMENT, RegExpProxy( "^--(?:\\[(=*)\\[[\\s\\S]*?(?:\\]\\1\\]|$)|[^\\r\\n]*)" )],
// A long bracketed block not preceded by -- is a string.
[PR_STRING, RegExpProxy( "^\\[(=*)\\[[\\s\\S]*?(?:\\]\\1\\]|$)" )],
[PR_KEYWORD, RegExpProxy( "^(?:and|break|do|else|elseif|end|false|for|function|if|in|local|nil|not|or|repeat|return|then|true|until|while)\\b" ), null],
// A number is a hex integer literal, a decimal real literal, or in
// scientific notation.
[PR_LITERAL,
RegExpProxy( "^[+-]?(?:0x[\\da-f]+|(?:(?:\\.\\d+|\\d+(?:\\.\\d*)?)(?:e[+\\-]?\\d+)?))", 'i' )],
// An identifier
[PR_PLAIN, RegExpProxy( "^[a-z_]\\w*", 'i' )],
// A run of punctuation
[PR_PUNCTUATION, RegExpProxy( "^[^\\w\\t\\n\\r \\xA0][^\\w\\t\\n\\r \\xA0\\\"\\'\\-\\+=]*" )]
]),
['lua']);