content/xslt/src/xslt/txXPathResultComparator.h
author Ehsan Akhgari <ehsan@mozilla.com>
Wed, 22 Aug 2012 11:56:38 -0400
changeset 103003 a16372ce30b5f6b747246b01fcd215a4bf3b6342
parent 94475 f4157e8c410708d76703f19e4dfb61859bfe32d8
child 133330 a966aadd9ae3c71c1f367562bca701831285c091
permissions -rw-r--r--
Bug 579517 - Part 1: Automated conversion of NSPR numeric types to stdint types in Gecko; r=bsmedberg This patch was generated by a script. Here's the source of the script for future reference: function convert() { echo "Converting $1 to $2..." find . ! -wholename "*nsprpub*" \ ! -wholename "*security/nss*" \ ! -wholename "*/.hg*" \ ! -wholename "obj-ff-dbg*" \ ! -name nsXPCOMCID.h \ ! -name prtypes.h \ -type f \ \( -iname "*.cpp" \ -o -iname "*.h" \ -o -iname "*.c" \ -o -iname "*.cc" \ -o -iname "*.idl" \ -o -iname "*.ipdl" \ -o -iname "*.ipdlh" \ -o -iname "*.mm" \) | \ xargs -n 1 sed -i -e "s/\b$1\b/$2/g" } convert PRInt8 int8_t convert PRUint8 uint8_t convert PRInt16 int16_t convert PRUint16 uint16_t convert PRInt32 int32_t convert PRUint32 uint32_t convert PRInt64 int64_t convert PRUint64 uint64_t convert PRIntn int convert PRUintn unsigned convert PRSize size_t convert PROffset32 int32_t convert PROffset64 int64_t convert PRPtrdiff ptrdiff_t convert PRFloat64 double

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef TRANSFRMX_XPATHRESULTCOMPARATOR_H
#define TRANSFRMX_XPATHRESULTCOMPARATOR_H

#include "txCore.h"
#include "nsCOMPtr.h"
#include "nsICollation.h"
#include "nsString.h"

class Expr;
class txIEvalContext;

/*
 * 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 nsresult createSortableValue(Expr *aExpr, txIEvalContext *aContext,
                                         txObject *&aResult) = 0;
};

/*
 * Compare results as stings (data-type="text")
 */
class txResultStringComparator : public txXPathResultComparator
{
public:
    txResultStringComparator(bool aAscending, bool aUpperFirst,
                             const nsAFlatString& aLanguage);

    int compareValues(txObject* aVal1, txObject* aVal2);
    nsresult createSortableValue(Expr *aExpr, txIEvalContext *aContext,
                                 txObject *&aResult);
private:
    nsCOMPtr<nsICollation> mCollation;
    nsresult init(const nsAFlatString& aLanguage);
    nsresult createRawSortKey(const int32_t aStrength,
                              const nsString& aString,
                              uint8_t** aKey,
                              uint32_t* aLength);
    int mSorting;

    class StringValue : public txObject
    {
    public:
        StringValue();
        ~StringValue();

        uint8_t* mKey;
        void* mCaseKey;
        uint32_t mLength, mCaseLength;
    };
};

/*
 * Compare results as numbers (data-type="number")
 */
class txResultNumberComparator : public txXPathResultComparator
{
public:
    txResultNumberComparator(bool aAscending);

    int compareValues(txObject* aVal1, txObject* aVal2);
    nsresult createSortableValue(Expr *aExpr, txIEvalContext *aContext,
                                 txObject *&aResult);

private:
    int mAscending;

    class NumberValue : public txObject
    {
    public:
        double mVal;
    };
};

#endif