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txVariableMap.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is TransforMiiX XSLT processor code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Jonas Sicking.
00019  * Portions created by the Initial Developer are Copyright (C) 2002
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Jonas Sicking <sicking@bigfoot.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef TRANSFRMX_VARIABLEMAP_H
00040 #define TRANSFRMX_VARIABLEMAP_H
00041 
00042 #include "txError.h"
00043 #include "XMLUtils.h"
00044 #include "ExprResult.h"
00045 #include "txExpandedNameMap.h"
00046 
00047 class txVariableMap {
00048 public:
00049     txVariableMap();
00050     ~txVariableMap();
00051     
00052     nsresult bindVariable(const txExpandedName& aName, txAExprResult* aValue);
00053 
00054     void getVariable(const txExpandedName& aName, txAExprResult** aResult);
00055     
00056     void removeVariable(const txExpandedName& aName);
00057 
00058 private:
00059     txExpandedNameMap mMap;
00060 };
00061 
00062 
00063 inline
00064 txVariableMap::txVariableMap()
00065     : mMap(MB_FALSE)
00066 {
00067 }
00068 
00069 inline
00070 txVariableMap::~txVariableMap()
00071 {
00072     txExpandedNameMap::iterator iter(mMap);
00073     while (iter.next()) {
00074         txAExprResult* res = NS_STATIC_CAST(txAExprResult*, iter.value());
00075         NS_RELEASE(res);
00076     }
00077 }
00078 
00079 inline nsresult
00080 txVariableMap::bindVariable(const txExpandedName& aName, txAExprResult* aValue)
00081 {
00082     NS_ASSERTION(aValue, "can't add null-variables to a txVariableMap");
00083     nsresult rv = mMap.add(aName, aValue);
00084     if (NS_SUCCEEDED(rv)) {
00085         NS_ADDREF(aValue);
00086     }
00087     return rv;
00088 }
00089 
00090 inline void
00091 txVariableMap::getVariable(const txExpandedName& aName, txAExprResult** aResult)
00092 {
00093     *aResult = NS_STATIC_CAST(txAExprResult*, mMap.get(aName));
00094     if (*aResult) {
00095         NS_ADDREF(*aResult);
00096     }
00097 }
00098 
00099 inline void
00100 txVariableMap::removeVariable(const txExpandedName& aName)
00101 {
00102     txAExprResult* var = NS_STATIC_CAST(txAExprResult*, mMap.remove(aName));
00103     NS_IF_RELEASE(var);
00104 }
00105 
00106 #endif //TRANSFRMX_VARIABLEMAP_H