mirror of
https://github.com/rn10950/RetroZilla.git
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112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TransforMiiX XSLT processor code.
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*
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* The Initial Developer of the Original Code is
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* IBM Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* IBM Corporation
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef txResultRecycler_h__
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#define txResultRecycler_h__
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#include "nsCOMPtr.h"
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#include "txStack.h"
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class txAExprResult;
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class StringResult;
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class txNodeSet;
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class txXPathNode;
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class NumberResult;
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class BooleanResult;
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class txResultRecycler
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{
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public:
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txResultRecycler();
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~txResultRecycler();
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nsresult init();
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void AddRef()
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{
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++mRefCnt;
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}
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void Release()
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{
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if (--mRefCnt == 0) {
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mRefCnt = 1; //stabilize
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delete this;
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}
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}
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/**
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* Returns an txAExprResult to this recycler for reuse.
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* @param aResult result to recycle
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*/
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void recycle(txAExprResult* aResult);
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/**
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* Functions to return results that will be fully used by the caller.
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* Returns nsnull on out-of-memory and an inited result otherwise.
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*/
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nsresult getStringResult(StringResult** aResult);
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nsresult getStringResult(const nsAString& aValue, txAExprResult** aResult);
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nsresult getNodeSet(txNodeSet** aResult);
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nsresult getNodeSet(txNodeSet* aNodeSet, txNodeSet** aResult);
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nsresult getNodeSet(const txXPathNode& aNode, txAExprResult** aResult);
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nsresult getNodeSet(const txXPathNode& aNode, txNodeSet** aResult);
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nsresult getNumberResult(double aValue, txAExprResult** aResult);
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/**
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* Functions to return a txAExprResult that is shared across several
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* clients and must not be modified. Never returns nsnull.
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*/
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void getEmptyStringResult(txAExprResult** aResult);
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void getBoolResult(PRBool aValue, txAExprResult** aResult);
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/**
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* Functions that return non-shared resultsobjects
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*/
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nsresult getNonSharedNodeSet(txNodeSet* aNodeSet, txNodeSet** aResult);
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private:
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nsAutoRefCnt mRefCnt;
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txStack mStringResults;
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txStack mNodeSetResults;
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txStack mNumberResults;
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StringResult* mEmptyStringResult;
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BooleanResult* mTrueResult;
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BooleanResult* mFalseResult;
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};
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#endif //txResultRecycler_h__
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