pjs/extensions/transformiix/source/xpath/NumberResult.cpp

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C++

/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is TransforMiiX XSLT processor.
*
* The Initial Developer of the Original Code is The MITRE Corporation.
* Portions created by MITRE are Copyright (C) 1999 The MITRE Corporation.
*
* Portions created by Keith Visco as a Non MITRE employee,
* (C) 1999 Keith Visco. All Rights Reserved.
*
* Contributor(s):
* Keith Visco, kvisco@ziplink.net
* -- original author.
*
* $Id: NumberResult.cpp,v 1.6 2001-01-22 09:36:18 kvisco%ziplink.net Exp $
*/
/**
* NumberResult
* Represents the a number as the result of evaluating an Expr
* @author <A HREF="mailto:kvisco@ziplink.net">Keith Visco</A>
* @version $Revision: 1.6 $ $Date: 2001-01-22 09:36:18 $
**/
#include "ExprResult.h"
/**
* Default Constructor
**/
NumberResult::NumberResult() {
value = 0.0;
} //-- NumberResult
NumberResult::NumberResult(const NumberResult& nbrResult) {
this->value = nbrResult.getValue();
} //-- NumberResult
/**
* 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 dbl) {
this->value = dbl;
} //-- NumberResult
/**
* Returns the value of this NumberResult
* @return the value of this NumberResult
**/
double NumberResult::getValue() const {
return this->value;
} //-- getValue
/**
*
**/
MBool NumberResult::isNaN() const {
return Double::isNaN(value);
} //-- isNaN
/*
* Virtual Methods from ExprResult
*/
short NumberResult::getResultType() {
return ExprResult::NUMBER;
} //-- getResultType
void NumberResult::stringValue(String& str) {
int intVal = (int)value;
if (intVal == value) { //-- no fraction
Integer::toString(intVal, str);
}
else Double::toString(value, str);
} //-- stringValue
MBool 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 (MBool)(this->value != 0.0 && this->value != -0.0 && ! isNaN());
// OG-
} //-- booleanValue
double NumberResult::numberValue() {
return this->value;
} //-- numberValue