mirror of
https://github.com/classilla/tenfourfox.git
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97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef TRANSFRMX_XPATHRESULTCOMPARATOR_H
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#define TRANSFRMX_XPATHRESULTCOMPARATOR_H
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#include "mozilla/Attributes.h"
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#include "txCore.h"
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#include "nsCOMPtr.h"
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#include "nsICollation.h"
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#include "nsString.h"
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class Expr;
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class txIEvalContext;
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/*
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* Result comparators
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*/
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class txXPathResultComparator
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{
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public:
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virtual ~txXPathResultComparator()
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{
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}
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/*
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* Compares two XPath results. Returns -1 if val1 < val2,
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* 1 if val1 > val2 and 0 if val1 == val2.
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*/
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virtual int compareValues(txObject* val1, txObject* val2) = 0;
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/*
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* Create a sortable value.
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*/
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virtual nsresult createSortableValue(Expr *aExpr, txIEvalContext *aContext,
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txObject *&aResult) = 0;
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};
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/*
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* Compare results as stings (data-type="text")
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*/
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class txResultStringComparator : public txXPathResultComparator
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{
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public:
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txResultStringComparator(bool aAscending, bool aUpperFirst,
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const nsAFlatString& aLanguage);
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int compareValues(txObject* aVal1, txObject* aVal2) override;
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nsresult createSortableValue(Expr *aExpr, txIEvalContext *aContext,
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txObject *&aResult) override;
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private:
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nsCOMPtr<nsICollation> mCollation;
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nsresult init(const nsAFlatString& aLanguage);
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nsresult createRawSortKey(const int32_t aStrength,
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const nsString& aString,
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uint8_t** aKey,
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uint32_t* aLength);
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int mSorting;
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class StringValue : public txObject
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{
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public:
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StringValue();
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~StringValue();
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uint8_t* mKey;
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void* mCaseKey;
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uint32_t mLength, mCaseLength;
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};
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};
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/*
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* Compare results as numbers (data-type="number")
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*/
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class txResultNumberComparator : public txXPathResultComparator
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{
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public:
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explicit txResultNumberComparator(bool aAscending);
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int compareValues(txObject* aVal1, txObject* aVal2) override;
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nsresult createSortableValue(Expr *aExpr, txIEvalContext *aContext,
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txObject *&aResult) override;
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private:
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int mAscending;
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class NumberValue : public txObject
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{
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public:
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double mVal;
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};
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};
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#endif
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