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49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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/**
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* NumberResult
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* Represents the a number as the result of evaluating an Expr
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**/
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#include "mozilla/FloatingPoint.h"
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#include "txExprResult.h"
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/**
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* Default Constructor
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**/
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/**
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* Creates a new NumberResult with the value of the given double parameter
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* @param dbl the double to use for initialization of this NumberResult's value
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**/
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NumberResult::NumberResult(double aValue, txResultRecycler* aRecycler)
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: txAExprResult(aRecycler), value(aValue) {} //-- NumberResult
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/*
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* Virtual Methods from ExprResult
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*/
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short NumberResult::getResultType() {
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return txAExprResult::NUMBER;
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} //-- getResultType
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void NumberResult::stringValue(nsString& aResult) {
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txDouble::toString(value, aResult);
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}
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const nsString* NumberResult::stringValuePointer() { return nullptr; }
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bool NumberResult::booleanValue() {
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// OG+
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// As per the XPath spec, the boolean value of a number is true if and only if
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// it is neither positive 0 nor negative 0 nor NaN
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return (bool)(value != 0.0 && !std::isnan(value));
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// OG-
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} //-- booleanValue
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double NumberResult::numberValue() { return this->value; } //-- numberValue
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