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111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (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/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Peter Van der Beken, peterv@netscape.com
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "XPathProcessor.h"
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#include "dom.h"
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#include "ProcessorState.h"
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#include "Expr.h"
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#include "nsNodeSet.h"
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#include "nsIDOMClassInfo.h"
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// QueryInterface implementation for XPathProcessor
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NS_INTERFACE_MAP_BEGIN(XPathProcessor)
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NS_INTERFACE_MAP_ENTRY(nsIXPathNodeSelector)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY_DOM_CLASSINFO(XPathProcessor)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(XPathProcessor)
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NS_IMPL_RELEASE(XPathProcessor)
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/*
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* Creates a new XPathProcessor
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*/
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XPathProcessor::XPathProcessor()
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{
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NS_INIT_ISUPPORTS();
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}
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/*
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* Default destructor
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*/
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XPathProcessor::~XPathProcessor()
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{
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}
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/* nsIDOMNodeList selectNodes (in nsIDOMNode aContextNode, in DOMString aPattern); */
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NS_IMETHODIMP XPathProcessor::SelectNodes(nsIDOMNode *aContextNode,
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const nsAReadableString & aPattern,
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nsIDOMNodeList **_retval)
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{
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String pattern(PromiseFlatString(aPattern).get());
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nsCOMPtr<nsIDOMDocument> aOwnerDOMDocument;
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aContextNode->GetOwnerDocument(getter_AddRefs(aOwnerDOMDocument));
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nsCOMPtr<nsIDocument> aOwnerDocument = do_QueryInterface(aOwnerDOMDocument);
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Document* aDocument = new Document(aOwnerDOMDocument);
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Node* aNode = aDocument->createWrapper(aContextNode);
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ProcessorState* aProcessorState = new ProcessorState();
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ExprParser aParser;
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Expr* aExpression = aParser.createExpr(pattern);
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ExprResult* exprResult = aExpression->evaluate(aNode, aProcessorState);
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nsNodeSet* resultSet;
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if (exprResult->getResultType() == ExprResult::NODESET) {
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resultSet = new nsNodeSet((NodeSet*)exprResult);
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}
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else {
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// Return an empty nodeset
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resultSet = new nsNodeSet(nsnull);
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}
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*_retval = resultSet;
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NS_ADDREF(*_retval);
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delete aProcessorState;
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delete exprResult;
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delete aExpression;
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delete aDocument;
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return NS_OK;
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}
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