112 lines
4.4 KiB
JavaScript
112 lines
4.4 KiB
JavaScript
(function(){
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var Lexer, compile, helpers, lexer, parser, path, process_scripts;
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// CoffeeScript can be used both on the server, as a command-line compiler based
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// on Node.js/V8, or to run CoffeeScripts directly in the browser. This module
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// contains the main entry functions for tokenzing, parsing, and compiling source
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// CoffeeScript into JavaScript.
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// If included on a webpage, it will automatically sniff out, compile, and
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// execute all scripts present in `text/coffeescript` tags.
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// Set up dependencies correctly for both the server and the browser.
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if ((typeof process !== "undefined" && process !== null)) {
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path = require('path');
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Lexer = require('./lexer').Lexer;
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parser = require('./parser').parser;
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helpers = require('./helpers').helpers;
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helpers.extend(global, require('./nodes'));
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require.registerExtension ? require.registerExtension('.coffee', function(content) {
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return compile(content);
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}) : null;
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} else {
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this.exports = (this.CoffeeScript = {});
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Lexer = this.Lexer;
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parser = this.parser;
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helpers = this.helpers;
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}
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// The current CoffeeScript version number.
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exports.VERSION = '0.6.0';
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// Instantiate a Lexer for our use here.
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lexer = new Lexer();
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// Compile a string of CoffeeScript code to JavaScript, using the Coffee/Jison
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// compiler.
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exports.compile = (compile = function compile(code, options) {
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options = options || {};
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try {
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return (parser.parse(lexer.tokenize(code))).compile(options);
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} catch (err) {
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if (options.source) {
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err.message = ("In " + (options.source) + ", " + (err.message));
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}
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throw err;
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}
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});
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// Tokenize a string of CoffeeScript code, and return the array of tokens.
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exports.tokens = function tokens(code) {
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return lexer.tokenize(code);
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};
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// Tokenize and parse a string of CoffeeScript code, and return the AST. You can
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// then compile it by calling `.compile()` on the root, or traverse it by using
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// `.traverse()` with a callback.
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exports.nodes = function nodes(code) {
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return parser.parse(lexer.tokenize(code));
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};
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// Compile and execute a string of CoffeeScript (on the server), correctly
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// setting `__filename`, `__dirname`, and relative `require()`.
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exports.run = (function(code, options) {
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var __dirname, __filename;
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module.filename = (__filename = options.source);
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__dirname = path.dirname(__filename);
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return eval(exports.compile(code, options));
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});
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// Extend CoffeeScript with a custom language extension. It should hook in to
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// the **Lexer** (as a peer of any of the lexer's tokenizing methods), and
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// push a token on to the stack that contains a **Node** as the value (as a
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// peer of the nodes in [nodes.coffee](nodes.html)).
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exports.extend = function extend(func) {
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return Lexer.extensions.push(func);
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};
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// The real Lexer produces a generic stream of tokens. This object provides a
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// thin wrapper around it, compatible with the Jison API. We can then pass it
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// directly as a "Jison lexer".
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parser.lexer = {
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lex: function lex() {
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var token;
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token = this.tokens[this.pos] || [""];
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this.pos += 1;
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this.yylineno = token[2];
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this.yytext = token[1];
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return token[0];
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},
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setInput: function setInput(tokens) {
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this.tokens = tokens;
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this.pos = 0;
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return this.pos;
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},
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upcomingInput: function upcomingInput() {
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return "";
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},
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showPosition: function showPosition() {
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return this.pos;
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}
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};
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// Activate CoffeeScript in the browser by having it compile and evaluate
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// all script tags with a content-type of `text/coffeescript`. This happens
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// on page load. Unfortunately, the text contents of remote scripts cannot be
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// accessed from the browser, so only inline script tags will work.
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if ((typeof document !== "undefined" && document !== null) && document.getElementsByTagName) {
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process_scripts = function process_scripts() {
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var _a, _b, _c, _d, tag;
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_a = []; _c = document.getElementsByTagName('script');
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for (_b = 0, _d = _c.length; _b < _d; _b++) {
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tag = _c[_b];
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tag.type === 'text/coffeescript' ? _a.push(eval(exports.compile(tag.innerHTML))) : null;
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}
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return _a;
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};
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if (window.addEventListener) {
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window.addEventListener('load', process_scripts, false);
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} else if (window.attachEvent) {
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window.attachEvent('onload', process_scripts);
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}
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}
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})();
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