txNumberResult.cpp (1380B)
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 /** 7 * NumberResult 8 * Represents the a number as the result of evaluating an Expr 9 **/ 10 11 #include "txExprResult.h" 12 13 /** 14 * Default Constructor 15 **/ 16 17 /** 18 * Creates a new NumberResult with the value of the given double parameter 19 * @param dbl the double to use for initialization of this NumberResult's value 20 **/ 21 NumberResult::NumberResult(double aValue, txResultRecycler* aRecycler) 22 : txAExprResult(aRecycler), value(aValue) {} //-- NumberResult 23 24 /* 25 * Virtual Methods from ExprResult 26 */ 27 28 short NumberResult::getResultType() { 29 return txAExprResult::NUMBER; 30 } //-- getResultType 31 32 void NumberResult::stringValue(nsString& aResult) { 33 txDouble::toString(value, aResult); 34 } 35 36 const nsString* NumberResult::stringValuePointer() { return nullptr; } 37 38 bool NumberResult::booleanValue() { 39 // OG+ 40 // As per the XPath spec, the boolean value of a number is true if and only if 41 // it is neither positive 0 nor negative 0 nor NaN 42 return (bool)(value != 0.0 && !std::isnan(value)); 43 // OG- 44 } //-- booleanValue 45 46 double NumberResult::numberValue() { return this->value; } //-- numberValue