97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
/*
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* (C) Copyright The MITRE Corporation 1999 All rights reserved.
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* The program provided "as is" without any warranty express or
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* implied, including the warranty of non-infringement and the implied
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* warranties of merchantibility and fitness for a particular purpose.
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* The Copyright owner will not be liable for any damages suffered by
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* you as a result of using the Program. In no event will the Copyright
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* owner be liable for any special, indirect or consequential damages or
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* lost profits even if the Copyright owner has been advised of the
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* possibility of their occurrence.
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*
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* Please see release.txt distributed with this file for more information.
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*
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*/
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#include "FunctionLib.h"
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/**
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* Creates a default BooleanFunctionCall, which always evaluates to False
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**/
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BooleanFunctionCall::BooleanFunctionCall() : FunctionCall(FALSE_FN) {
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this->type = FALSE;
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} //-- BooleanFunctionCall
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/**
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* Creates a BooleanFunctionCall of the given type
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**/
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BooleanFunctionCall::BooleanFunctionCall(short type) : FunctionCall()
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{
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switch ( type ) {
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case BOOLEAN :
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FunctionCall::setName(BOOLEAN_FN);
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break;
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case NOT :
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FunctionCall::setName(NOT_FN);
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break;
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case TRUE :
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FunctionCall::setName(TRUE_FN);
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break;
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default:
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FunctionCall::setName(FALSE_FN);
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break;
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}
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this->type = type;
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} //-- BooleanFunctionCall
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/**
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* Evaluates this Expr based on the given context node and processor state
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* @param context the context node for evaluation of this Expr
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* @param ps the ContextState containing the stack information needed
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* for evaluation
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* @return the result of the evaluation
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**/
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ExprResult* BooleanFunctionCall::evaluate(Node* context, ContextState* cs) {
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BooleanResult* result = new BooleanResult();
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ListIterator* iter = params.iterator();
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int argc = params.getLength();
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Expr* param = 0;
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String err;
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switch ( type ) {
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case BOOLEAN :
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if ( requireParams(1,1,cs) ) {
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param = (Expr*)iter->next();
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ExprResult* exprResult = param->evaluate(context, cs);
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result->setValue(exprResult->booleanValue());
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delete exprResult;
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}
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break;
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case NOT :
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if ( requireParams(1,1,cs) ) {
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param = (Expr*)iter->next();
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ExprResult* exprResult = param->evaluate(context, cs);
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result->setValue(!exprResult->booleanValue());
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delete exprResult;
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}
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break;
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case TRUE :
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result->setValue(MB_TRUE);
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break;
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default:
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result->setValue(MB_FALSE);
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break;
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}
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delete iter;
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return result;
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} //-- evaluate
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