pjs/extensions/xforms/nsXFormsXPathAnalyzer.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 Mozilla XForms support.
*
* The Initial Developer of the Original Code is
* Novell, Inc.
* Portions created by the Initial Developer are Copyright (C) 2004
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Allan Beaufour <abeaufour@novell.com>
* David Landwehr <dlandwehr@novell.com>
*
* 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 "nscore.h"
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
#include "nsXFormsXPathNode.h"
#include "nsIDOMNSXPathExpression.h"
#include "nsIXFormsXPathEvaluator.h"
#include "nsIDOMXPathNSResolver.h"
#include "nsIDOMNode.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsVoidArray.h"
/**
* This class analyzes an XPath Expression parse tree (nsXFormsXPathNode), and
* returns all the nodes that the expression depends on.
*
* @note Should be reimplemented and moved to Transformiix
* @note This class is not thread safe (mCur.*)
*/
class nsXFormsXPathAnalyzer {
private:
nsCOMPtr<nsIXFormsXPathEvaluator> mEvaluator;
nsCOMPtr<nsIDOMNode> mResolver;
nsCOMArray<nsIDOMNode> *mCurSet;
nsCOMPtr<nsIDOMNSXPathExpression> mCurExpression;
const nsAString *mCurExprString;
PRUint32 mCurSize;
PRUint32 mCurPosition;
nsStringArray mIndexesUsed;
nsresult AnalyzeRecursively(nsIDOMNode *aContextNode,
const nsXFormsXPathNode *aNode,
PRUint32 aIndent,
PRBool aCollect = PR_FALSE);
public:
nsXFormsXPathAnalyzer(nsIXFormsXPathEvaluator *aEvaluator,
nsIDOMNode *aResolver);
~nsXFormsXPathAnalyzer();
nsresult Analyze(nsIDOMNode *aContextNode,
const nsXFormsXPathNode *aNode,
nsIDOMNSXPathExpression *aExpression,
const nsAString *aExprString,
nsCOMArray<nsIDOMNode> *aSet,
PRUint32 aSize,
PRUint32 aPosition,
PRBool aIncludeRoot);
const nsStringArray& IndexesUsed() const;
};