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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/. */
/**
* NumberResult
* Represents the a number as the result of evaluating an Expr
**/
#include "mozilla/FloatingPoint.h"
#include "txExprResult.h"
/**
* Default Constructor
**/
/**
* Creates a new NumberResult with the value of the given double parameter
* @param dbl the double to use for initialization of this NumberResult's value
**/
NumberResult::NumberResult(double aValue, txResultRecycler* aRecycler)
: txAExprResult(aRecycler), value(aValue) {} //-- NumberResult
/*
* Virtual Methods from ExprResult
*/
short NumberResult::getResultType() {
return txAExprResult::NUMBER;
} //-- getResultType
void NumberResult::stringValue(nsString& aResult) {
txDouble::toString(value, aResult);
}
const nsString* NumberResult::stringValuePointer() { return nullptr; }
bool NumberResult::booleanValue() {
// OG+
// As per the XPath spec, the boolean value of a number is true if and only if
// it is neither positive 0 nor negative 0 nor NaN
return (bool)(value != 0.0 && !mozilla::IsNaN(value));
// OG-
} //-- booleanValue
double NumberResult::numberValue() { return this->value; } //-- numberValue
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