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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is TransforMiiX XSLT processor code.
*
* The Initial Developer of the Original Code is
* Jonas Sicking.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Jonas Sicking <sicking@bigfoot.com>
* Peter Van der Beken <peterv@propagandism.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef TRANSFRMX_XPATHRESULTCOMPARATOR_H
#define TRANSFRMX_XPATHRESULTCOMPARATOR_H
#include "txCore.h"
#ifndef TX_EXE
#include "nsCOMPtr.h"
#include "nsICollation.h"
#endif
#include "nsString.h"
class txAExprResult;
/*
* Result comparators
*/
class txXPathResultComparator
{
public:
virtual ~txXPathResultComparator()
{
}
/*
* Compares two XPath results. Returns -1 if val1 < val2,
* 1 if val1 > val2 and 0 if val1 == val2.
*/
virtual int compareValues(TxObject* val1, TxObject* val2) = 0;
/*
* Create a sortable value.
*/
virtual TxObject* createSortableValue(txAExprResult* exprRes) = 0;
};
/*
* Compare results as stings (data-type="text")
*/
class txResultStringComparator : public txXPathResultComparator
{
public:
txResultStringComparator(MBool aAscending, MBool aUpperFirst,
const nsAFlatString& aLanguage);
virtual ~txResultStringComparator();
int compareValues(TxObject* aVal1, TxObject* aVal2);
TxObject* createSortableValue(txAExprResult* aExprRes);
private:
#ifndef TX_EXE
nsCOMPtr<nsICollation> mCollation;
nsresult init(const nsAFlatString& aLanguage);
nsresult createRawSortKey(const PRInt32 aStrength,
const nsString& aString,
PRUint8** aKey,
PRUint32* aLength);
#endif
int mSorting;
class StringValue : public TxObject
{
public:
#ifdef TX_EXE
nsString mStr;
#else
StringValue();
~StringValue();
PRUint8* mKey;
void* mCaseKey;
PRUint32 mLength, mCaseLength;
#endif
};
};
/*
* Compare results as numbers (data-type="number")
*/
class txResultNumberComparator : public txXPathResultComparator
{
public:
txResultNumberComparator(MBool aAscending);
virtual ~txResultNumberComparator();
int compareValues(TxObject* aVal1, TxObject* aVal2);
TxObject* createSortableValue(txAExprResult* aExprRes);
private:
int mAscending;
class NumberValue : public TxObject
{
public:
double mVal;
};
};
#endif
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