| /** | |
| * @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 | |
| */ | |
| 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']); |