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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_EXPRRESULT_H
#define TRANSFRMX_EXPRRESULT_H
#include "nsString.h"
#include "txCore.h"
#include "txResultRecycler.h"
/*
* ExprResult
*
* Classes Represented:
* BooleanResult, ExprResult, NumberResult, StringResult
*
* Note: for NodeSet, see NodeSet.h
*/
class txAExprResult {
public:
friend class txResultRecycler;
// Update txLiteralExpr::getReturnType and sTypes in txEXSLTFunctions.cpp if
// this enum is changed.
enum ResultType {
NODESET = 0,
BOOLEAN,
NUMBER,
STRING,
RESULT_TREE_FRAGMENT
};
explicit txAExprResult(txResultRecycler* aRecycler) : mRecycler(aRecycler) {}
virtual ~txAExprResult() = default;
void AddRef() {
++mRefCnt;
NS_LOG_ADDREF(this, mRefCnt, "txAExprResult", sizeof(*this));
}
void Release(); // Implemented in txResultRecycler.cpp
/**
* Returns the type of ExprResult represented
* @return the type of ExprResult represented
**/
virtual short getResultType() = 0;
/**
* Creates a String representation of this ExprResult
* @param aResult the destination string to append the String
* representation to.
**/
virtual void stringValue(nsString& aResult) = 0;
/**
* Returns a pointer to the stringvalue if possible. Otherwise null is
* returned.
*/
virtual const nsString* stringValuePointer() = 0;
/**
* Converts this ExprResult to a Boolean (bool) value
* @return the Boolean value
**/
virtual bool booleanValue() = 0;
/**
* Converts this ExprResult to a Number (double) value
* @return the Number value
**/
virtual double numberValue() = 0;
private:
nsAutoRefCnt mRefCnt;
RefPtr<txResultRecycler> mRecycler;
};
#define TX_DECL_EXPRRESULT \
virtual short getResultType() override; \
virtual void stringValue(nsString& aString) override; \
virtual const nsString* stringValuePointer() override; \
virtual bool booleanValue() override; \
virtual double numberValue() override;
class BooleanResult : public txAExprResult {
public:
explicit BooleanResult(bool aValue);
TX_DECL_EXPRRESULT
private:
bool value;
};
class NumberResult : public txAExprResult {
public:
NumberResult(double aValue, txResultRecycler* aRecycler);
TX_DECL_EXPRRESULT
double value;
};
class StringResult : public txAExprResult {
public:
explicit StringResult(txResultRecycler* aRecycler);
StringResult(const nsAString& aValue, txResultRecycler* aRecycler);
TX_DECL_EXPRRESULT
nsString mValue;
};
#endif
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