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lightning-sunbird  0.9+nobinonly
txSingleNodeContext.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  * Axel Hecht.
00019  * Portions created by the Initial Developer are Copyright (C) 2002
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Axel Hecht <axel@pike.org>
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
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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 __TX_XPATH_SINGLENODE_CONTEXT
00040 #define __TX_XPATH_SINGLENODE_CONTEXT
00041 
00042 #include "txIXPathContext.h"
00043 
00044 class txSingleNodeContext : public txIEvalContext
00045 {
00046 public:
00047     txSingleNodeContext(const txXPathNode& aContextNode,
00048                         txIMatchContext* aContext)
00049         : mNode(aContextNode),
00050           mInner(aContext)
00051     {
00052         NS_ASSERTION(aContext, "txIMatchContext must be given");
00053     }
00054     ~txSingleNodeContext()
00055     {}
00056 
00057     nsresult getVariable(PRInt32 aNamespace, nsIAtom* aLName,
00058                          txAExprResult*& aResult)
00059     {
00060         NS_ASSERTION(mInner, "mInner is null!!!");
00061         return mInner->getVariable(aNamespace, aLName, aResult);
00062     }
00063 
00064     MBool isStripSpaceAllowed(const txXPathNode& aNode)
00065     {
00066         NS_ASSERTION(mInner, "mInner is null!!!");
00067         return mInner->isStripSpaceAllowed(aNode);
00068     }
00069 
00070     void* getPrivateContext()
00071     {
00072         NS_ASSERTION(mInner, "mInner is null!!!");
00073         return mInner->getPrivateContext();
00074     }
00075 
00076     txResultRecycler* recycler()
00077     {
00078         NS_ASSERTION(mInner, "mInner is null!!!");
00079         return mInner->recycler();
00080     }
00081 
00082     void receiveError(const nsAString& aMsg, nsresult aRes)
00083     {
00084         NS_ASSERTION(mInner, "mInner is null!!!");
00085 #ifdef DEBUG
00086         nsAutoString error(NS_LITERAL_STRING("forwarded error: "));
00087         error.Append(aMsg);
00088         mInner->receiveError(error, aRes);
00089 #else
00090         mInner->receiveError(aMsg, aRes);
00091 #endif
00092     }
00093 
00094     const txXPathNode& getContextNode()
00095     {
00096         return mNode;
00097     }
00098 
00099     PRUint32 size()
00100     {
00101         return 1;
00102     }
00103 
00104     PRUint32 position()
00105     {
00106         return 1;
00107     }
00108 
00109 private:
00110     const txXPathNode& mNode;
00111     txIMatchContext* mInner;
00112 };
00113 
00114 #endif // __TX_XPATH_SINGLENODE_CONTEXT