f003279337
Bug 88612. r=peterv, sr=jst git-svn-id: svn://10.0.0.236/trunk@98462 18797224-902f-48f8-a5cc-f745e15eee43
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is TransforMiiX XSLT processor.
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*
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* The Initial Developer of the Original Code is The MITRE Corporation.
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* Portions created by MITRE are Copyright (C) 1999 The MITRE Corporation.
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*
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* Portions created by Keith Visco as a Non MITRE employee,
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* (C) 1999 Keith Visco. All Rights Reserved.
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*
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* Contributor(s):
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* Keith Visco, kvisco@ziplink.net
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* -- original author.
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*
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* Marina Mechtcheriakova, mmarina@mindspring.com
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* -- added lang() implementation
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*
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* $Id: BooleanFunctionCall.cpp,v 1.9 2001-07-02 20:10:50 sicking%bigfoot.com Exp $
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*/
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#include "FunctionLib.h"
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#include "Names.h"
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/**
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* Creates a default BooleanFunctionCall, which always evaluates to False
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* @author <A HREF="mailto:kvisco@ziplink.net">Keith Visco</A>
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* @version $Revision: 1.9 $ $Date: 2001-07-02 20:10:50 $
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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 TX_BOOLEAN :
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name = XPathNames::BOOLEAN_FN;
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break;
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case TX_LANG:
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name = XPathNames::LANG_FN;
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break;
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case TX_NOT :
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name = XPathNames::NOT_FN;
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break;
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case TX_TRUE :
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name = XPathNames::TRUE_FN;
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break;
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default:
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name = XPathNames::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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MBool result = MB_FALSE;
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ListIterator* iter = params.iterator();
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Expr* param = 0;
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String err;
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switch ( type ) {
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case TX_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 = exprResult->booleanValue();
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delete exprResult;
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}
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break;
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case TX_LANG:
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if ( requireParams(1,1,cs) ) {
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String arg1, lang;
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evaluateToString((Expr*)iter->next(),context, cs, arg1);
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lang = ((Element*)context)->getAttribute(LANG_ATTR);
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arg1.toUpperCase(); // case-insensitive comparison
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lang.toUpperCase();
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result = (MBool)(lang.indexOf(arg1) == 0);
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}
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break;
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case TX_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 = (MBool)(!exprResult->booleanValue());
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delete exprResult;
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}
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break;
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case TX_TRUE :
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result = MB_TRUE;
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break;
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default:
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break;
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}
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delete iter;
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return new BooleanResult(result);
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} //-- evaluate
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