Ray Greenwell
a5b132757b
They are freaking out asdoc. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4918 542714f4-19e9-0310-aa3c-eee0fc999fb1
134 lines
3.8 KiB
ActionScript
134 lines
3.8 KiB
ActionScript
//
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// $Id: HashMap.as 4848 2007-10-18 23:55:26Z ray $
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.util {
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import flash.utils.Proxy;
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import flash.utils.flash_proxy;
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use namespace flash_proxy;
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/**
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* Makes a Map behave like an object. Iterations are done in the order of the keys
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* returned by the Map's keys() function.
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* Warning: "for" loops convert all keys to Strings, due to limitations with Proxy.
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*/
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public class MapProxyObject extends Proxy
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{
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/**
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* Construct a MapProxyObject backed by the specified Map.
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*/
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public function MapProxyObject (source :Map)
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{
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_map = source;
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}
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// The following are not strictly necessary and are freaking out asdoc, so I'll
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// comment them out for now.
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//
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// // from Object (but does not require 'override')
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// public function hasOwnProperty (name :String) :Boolean
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// {
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// return _map.containsKey(name);
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// }
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//
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// // from Object (but does not require 'override')
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// public function propertyIsEnumerable (name :String) :Boolean
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// {
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// return _map.containsKey(name);
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// }
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//
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// // from Object (but does not require 'override')
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// public function setPropertyIsEnumerable (name :String, isEnum :Boolean = true) :void
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// {
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// // no-op
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// // (Alternatively, we could keep a dictionary of keys that we ignore for enumeration...)
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// }
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/**
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* Handle value = proxy[key].
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*/
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override flash_proxy function getProperty (key :*) :*
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{
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return _map.get(key);
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}
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/**
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* Handle proxy[key] = value.
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*/
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override flash_proxy function setProperty (key :*, value :*) :void
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{
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_map.put(key, value);
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}
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/**
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* Handle delete proxy[key].
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*/
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override flash_proxy function deleteProperty (key :*) :Boolean
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{
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return (_map.remove(key) !== undefined);
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}
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/**
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* Used when iterating with a "for" loop. Note well that keys are turned into
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* Strings. This is a major failing.
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*/
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override flash_proxy function nextName (index :int) :String
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{
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return StringUtil.toString(_itrKeys[index - 1]);
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}
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/**
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* Used when iterating with a "for each" loop.
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*/
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override flash_proxy function nextValue (index :int) :*
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{
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return _map.get(_itrKeys[index - 1]);
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}
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/**
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* Iteration support.
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*/
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override flash_proxy function nextNameIndex (index :int) :int
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{
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// on the first call, set up a list to be iterated
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if (index == 0) {
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_itrKeys = _map.keys();
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}
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// return a 1-based index to indicate that there is a property
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if (index < _itrKeys.length) {
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return index + 1;
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} else {
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_itrKeys = null; // we're done, clear the list
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return 0;
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}
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}
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/** The map we use for storage. */
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protected var _map :Map;
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/** A temporary ordering for iteration. */
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protected var _itrKeys :Array;
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}
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}
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