/* ***** 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 Bespin.
 *
 * The Initial Developer of the Original Code is
 * Mozilla.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Bespin Team (bespin@mozilla.com)
 *
 * 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 ***** */

// borrowing from Dojo Toolkit under BSD license:

function getObject (/*String*/ name, /*Object*/ context) {
	var parts = name.split('.');
	for(var i = 0, p; context && (p = parts[i]); ++i) {
		if (context) {
			context = context[p];
		} else {
			return undefined;
		}
	}
	return context; // mixed
}
exports.getObject = getObject;

var replacePattern = /\{([^\}]+)\}/g;
function replace (/*String*/ tmpl, /*Object*/ map, /*RegularExpression?*/ pattern) {
	return tmpl.replace(pattern || replacePattern, function(_, k){ return getObject(k, map); });
};
exports.replace = replace;

function T () {}
function delegate (base, props) {
	T.prototype = base;
	var t = new T();
	T.prototype = null;
	if (props) {
		for (var name in props) {
			if (props.hasOwnProperty(name)) {
				t[name] = props[name];
			}
		}
	}
	return t;
}
exports.delegate = delegate;
