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/*
* 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.
*
*/
/**
* AttributeValueTemplate
**/
#include "Expr.h"
#include "ExprResult.h"
#include "txIXPathContext.h"
/**
* Create a new AttributeValueTemplate
**/
AttributeValueTemplate::AttributeValueTemplate() {}
/**
* Default destructor
**/
AttributeValueTemplate::~AttributeValueTemplate() {
txListIterator iter(&expressions);
while (iter.hasNext()) {
delete (Expr*)iter.next();
}
} //-- ~AttributeValueTemplate
/**
* Adds the given Expr to this AttributeValueTemplate
**/
void AttributeValueTemplate::addExpr(Expr* expr) {
if (expr) expressions.add(expr);
} //-- addExpr
/**
* Evaluates this Expr based on the given context node and processor state
* @param context the context node for evaluation of this Expr
* @param ps the ContextState containing the stack information needed
* for evaluation
* @return the result of the evaluation
**/
nsresult
AttributeValueTemplate::evaluate(txIEvalContext* aContext,
txAExprResult** aResult)
{
*aResult = nsnull;
txListIterator iter(&expressions);
nsRefPtr<StringResult> strRes;
nsresult rv = aContext->recycler()->getStringResult(getter_AddRefs(strRes));
NS_ENSURE_SUCCESS(rv, rv);
while (iter.hasNext()) {
Expr* expr = (Expr*)iter.next();
nsRefPtr<txAExprResult> exprResult;
nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprResult));
NS_ENSURE_SUCCESS(rv, rv);
exprResult->stringValue(strRes->mValue);
}
*aResult = strRes;
NS_ADDREF(*aResult);
return NS_OK;
} //-- evaluate
/**
* Returns the String representation of this Expr.
* @param dest the String to use when creating the String
* representation. The String representation will be appended to
* any data in the destination String, to allow cascading calls to
* other #toString() methods for Expressions.
* @return the String representation of this Expr.
**/
void AttributeValueTemplate::toString(nsAString& str) {
txListIterator iter(&expressions);
while (iter.hasNext()) {
str.Append(PRUnichar('{'));
Expr* expr = (Expr*)iter.next();
expr->toString(str);
str.Append(PRUnichar('}'));
}
} //-- toString
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