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lightning-sunbird  0.9+nobinonly
txResultRecycler.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00014  *
00015  * The Original Code is TransforMiiX XSLT processor code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * IBM Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 2002
00020  * the Initial Developer. All Rights Reserved.
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00022  * Contributor(s):
00023  *   IBM Corporation
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00025  * Alternatively, the contents of this file may be used under the terms of
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00038 
00039 #ifndef txResultRecycler_h__
00040 #define txResultRecycler_h__
00041 
00042 #include "nsCOMPtr.h"
00043 #include "txStack.h"
00044 
00045 class txAExprResult;
00046 class StringResult;
00047 class txNodeSet;
00048 class txXPathNode;
00049 class NumberResult;
00050 class BooleanResult;
00051 
00052 class txResultRecycler
00053 {
00054 public:
00055     txResultRecycler();
00056     ~txResultRecycler();
00057     nsresult init();
00058 
00059     void AddRef()
00060     {
00061         ++mRefCnt;
00062     }
00063     void Release()
00064     {
00065         if (--mRefCnt == 0) {
00066             mRefCnt = 1; //stabilize
00067             delete this;
00068         }
00069     }
00070 
00075     void recycle(txAExprResult* aResult);
00076 
00081     nsresult getStringResult(StringResult** aResult);
00082     nsresult getStringResult(const nsAString& aValue, txAExprResult** aResult);
00083     nsresult getNodeSet(txNodeSet** aResult);
00084     nsresult getNodeSet(txNodeSet* aNodeSet, txNodeSet** aResult);
00085     nsresult getNodeSet(const txXPathNode& aNode, txAExprResult** aResult);
00086     nsresult getNodeSet(const txXPathNode& aNode, txNodeSet** aResult);
00087     nsresult getNumberResult(double aValue, txAExprResult** aResult);
00088 
00093     void getEmptyStringResult(txAExprResult** aResult);
00094     void getBoolResult(PRBool aValue, txAExprResult** aResult);
00095 
00099     nsresult getNonSharedNodeSet(txNodeSet* aNodeSet, txNodeSet** aResult);
00100 
00101 private:
00102     nsAutoRefCnt mRefCnt;
00103     txStack mStringResults;
00104     txStack mNodeSetResults;
00105     txStack mNumberResults;
00106     StringResult* mEmptyStringResult;
00107     BooleanResult* mTrueResult;
00108     BooleanResult* mFalseResult;
00109 };
00110 
00111 #endif //txResultRecycler_h__