Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       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 "mozilla/FloatingPoint.h"
      12             : 
      13             : #include "txExprResult.h"
      14             : 
      15             : /**
      16             :  * Default Constructor
      17             : **/
      18             : 
      19             : /**
      20             :  * Creates a new NumberResult with the value of the given double parameter
      21             :  * @param dbl the double to use for initialization of this NumberResult's value
      22             : **/
      23           0 : NumberResult::NumberResult(double aValue, txResultRecycler* aRecycler)
      24           0 :     : txAExprResult(aRecycler), value(aValue)
      25             : {
      26           0 : } //-- NumberResult
      27             : 
      28             : /*
      29             :  * Virtual Methods from ExprResult
      30             : */
      31             : 
      32           0 : short NumberResult::getResultType() {
      33           0 :     return txAExprResult::NUMBER;
      34             : } //-- getResultType
      35             : 
      36             : void
      37           0 : NumberResult::stringValue(nsString& aResult)
      38             : {
      39           0 :     txDouble::toString(value, aResult);
      40           0 : }
      41             : 
      42             : const nsString*
      43           0 : NumberResult::stringValuePointer()
      44             : {
      45           0 :     return nullptr;
      46             : }
      47             : 
      48           0 : bool NumberResult::booleanValue() {
      49             :   // OG+
      50             :   // As per the XPath spec, the boolean value of a number is true if and only if
      51             :   // it is neither positive 0 nor negative 0 nor NaN
      52           0 :   return (bool)(value != 0.0 && !mozilla::IsNaN(value));
      53             :   // OG-
      54             : } //-- booleanValue
      55             : 
      56           0 : double NumberResult::numberValue() {
      57           0 :     return this->value;
      58             : } //-- numberValue
      59             :