gherkin/example/ace/build_support/mini_require.js

A fast Gherkin lexer/parser based on the Ragel State Machine Compiler.

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Ajax.org Code Editor (ACE).
 *
 * The Initial Developer of the Original Code is
 * Ajax.org B.V.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *      Fabian Jakobs <fabian AT ajax DOT org>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/**
 * Define a module along with a payload
 * @param module a name for the payload
 * @param payload a function to call with (require, exports, module) params
 */
 
(function() {
    
if (window.require) {
    require.packaged = true;
    return;
}
    
var _define = function(module, deps, payload) {
    if (typeof module !== 'string') {
        if (_define.original)
            _define.original.apply(window, arguments);
        else {
            console.error('dropping module because define wasn\'t a string.');
            console.trace();
        }
        return;
    }

    if (arguments.length == 2)
        payload = deps;

    if (!define.modules)
        define.modules = {};
        
    define.modules[module] = payload;
};
if (window.define)
    _define.original = window.define;
    
window.define = _define;


/**
 * Get at functionality define()ed using the function above
 */
var _require = function(module, callback) {
    if (Object.prototype.toString.call(module) === "[object Array]") {
        var params = [];
        for (var i = 0, l = module.length; i < l; ++i) {
            var dep = lookup(module[i]);
            if (!dep && _require.original)
                return _require.original.apply(window, arguments);
            params.push(dep);
        }
        if (callback) {
            callback.apply(null, params);
        }
    }
    else if (typeof module === 'string') {
        var payload = lookup(module);
        if (!payload && _require.original)
            return _require.original.apply(window, arguments);
        
        if (callback) {
            callback();
        }
    
        return payload;
    }
    else {
        if (_require.original)
            return _require.original.apply(window, arguments);
    }
};

if (window.require)
    _require.original = window.require;
    
window.require = _require;
require.packaged = true;

/**
 * Internal function to lookup moduleNames and resolve them by calling the
 * definition function if needed.
 */
var lookup = function(moduleName) {
    var module = define.modules[moduleName];
    if (module == null) {
        console.error('Missing module: ' + moduleName);
        return null;
    }

    if (typeof module === 'function') {
        var exports = {};
        module(require, exports, { id: moduleName, uri: '' });
        // cache the resulting module object for next time
        define.modules[moduleName] = exports;
        return exports;
    }

    return module;
};

})();