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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 code.
*
* The Initial Developer of the Original Code is
* The MITRE Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Keith Visco <kvisco@ziplink.net> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "Expr.h"
#include "nsIAtom.h"
#include "txNodeSet.h"
#include "txAtoms.h"
#include "txIXPathContext.h"
//-------------------/
//- VariableRefExpr -/
//-------------------/
/**
* Creates a VariableRefExpr with the given variable name
**/
VariableRefExpr::VariableRefExpr(nsIAtom* aPrefix, nsIAtom* aLocalName,
PRInt32 aNSID)
: mPrefix(aPrefix), mLocalName(aLocalName), mNamespace(aNSID)
{
NS_ASSERTION(mLocalName, "VariableRefExpr without local name?");
if (mPrefix == txXMLAtoms::_empty)
mPrefix = 0;
}
/*
* Release the local name atom
*/
VariableRefExpr::~VariableRefExpr()
{
}
/**
* 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
VariableRefExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
{
nsresult rv = aContext->getVariable(mNamespace, mLocalName, *aResult);
if (NS_FAILED(rv)) {
// XXX report error, undefined variable
return rv;
}
return NS_OK;
}
#ifdef TX_TO_STRING
void
VariableRefExpr::toString(nsAString& aDest)
{
aDest.Append(PRUnichar('$'));
if (mPrefix) {
nsAutoString prefix;
mPrefix->ToString(prefix);
aDest.Append(prefix);
aDest.Append(PRUnichar(':'));
}
nsAutoString lname;
mLocalName->ToString(lname);
aDest.Append(lname);
}
#endif
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