96 lines
2.9 KiB
C++
96 lines
2.9 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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/**
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* AttributeValueTemplate
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* @author <a href="mailto:kvisco@mitre.org">Keith Visco</a>
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**/
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#include "Expr.h"
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/**
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* Create a new AttributeValueTemplate
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**/
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AttributeValueTemplate::AttributeValueTemplate() {};
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/**
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* Default destructor
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**/
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AttributeValueTemplate::~AttributeValueTemplate() {
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ListIterator* iter = expressions.iterator();
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while ( iter->hasNext() ) {
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iter->next(); //advance iterator to allow remove
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Expr* expr = (Expr*)iter->remove();
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delete expr;
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}
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delete iter;
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} //-- ~AttributeValueTemplate
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/**
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* Adds the given Expr to this AttributeValueTemplate
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**/
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void AttributeValueTemplate::addExpr(Expr* expr) {
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if (expr) expressions.add(expr);
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} //-- addExpr
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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* AttributeValueTemplate::evaluate(Node* context, ContextState* cs) {
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ListIterator* iter = expressions.iterator();
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String result;
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while ( iter->hasNext() ) {
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Expr* expr = (Expr*)iter->next();
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ExprResult* exprResult = expr->evaluate(context, cs);
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exprResult->stringValue(result);
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delete exprResult;
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}
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delete iter;
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return new StringResult(result);
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} //-- evaluate
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/**
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* Returns the String representation of this Expr.
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* @param dest the String to use when creating the String
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* representation. The String representation will be appended to
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* any data in the destination String, to allow cascading calls to
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* other #toString() methods for Expressions.
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* @return the String representation of this Expr.
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**/
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void AttributeValueTemplate::toString(String& str) {
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ListIterator* iter = expressions.iterator();
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while ( iter->hasNext() ) {
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str.append('{');
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Expr* expr = (Expr*)iter->next();
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expr->toString(str);
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str.append('}');
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}
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delete iter;
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} //-- toString
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