File: examples/prettify/lang-lua.js

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File: examples/prettify/lang-lua.js
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: WAJAF
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Date: 2 years ago
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// 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 // // // // 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 * 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 */ PR.registerLangHandler( PR.createSimpleLexer( [ // Whitespace [PR.PR_PLAIN, /^[\t\n\r \xA0]+/, null, '\t\n\r \xA0'], // A double or single quoted, possibly multi-line, string. [PR.PR_STRING, /^(?:\"(?:[^\"\\]|\\[\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.PR_COMMENT, /^--(?:\[(=*)\[[\s\S]*?(?:\]\1\]|$)|[^\r\n]*)/], // A long bracketed block not preceded by -- is a string. [PR.PR_STRING, /^\[(=*)\[[\s\S]*?(?:\]\1\]|$)/], [PR.PR_KEYWORD, /^(?: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.PR_LITERAL, /^[+-]?(?:0x[\da-f]+|(?:(?:\.\d+|\d+(?:\.\d*)?)(?:e[+\-]?\d+)?))/i], // An identifier [PR.PR_PLAIN, /^[a-z_]\w*/i], // A run of punctuation [PR.PR_PUNCTUATION, /^[^\w\t\n\r \xA0][^\w\t\n\r \xA0\"\'\-\+=]*/] ]), ['lua']);