зеркало из https://github.com/mozilla/pjs.git
113 строки
3.5 KiB
C++
113 строки
3.5 KiB
C++
/* -*- 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 "nsXFormsXPathScanner.h"
|
|
#include "nsXFormsXPathNode.h"
|
|
|
|
#define ANALYZE_STACK_SIZE 120
|
|
|
|
/**
|
|
* The XPath Expression parser. Uses nsXFormsXPathScanner to scan the expression
|
|
* and builds a parse tree of nsXFormsXPathNode's.
|
|
*
|
|
* @note Should be reimplemented and moved to Transformiix
|
|
*
|
|
*/
|
|
class nsXFormsXPathParser {
|
|
private:
|
|
nsXFormsXPathScanner mScanner;
|
|
nsXFormsXPathScanner::XPATHTOKEN mPeek;
|
|
|
|
PRBool mUsesDynamicFunc;
|
|
|
|
nsXFormsXPathNode* mHead;
|
|
int mAnalyzeStackPointer;
|
|
int mPredicateLevel;
|
|
nsXFormsXPathNode* mStack[ANALYZE_STACK_SIZE];
|
|
|
|
nsXFormsXPathScanner::XPATHTOKEN PeekToken();
|
|
nsXFormsXPathScanner::XPATHTOKEN PopToken();
|
|
|
|
void PushContext(PRInt32 aStartIndex = -100);
|
|
void PushContext(nsXFormsXPathNode* mAnalyze);
|
|
void EndContext();
|
|
void RestartContext();
|
|
nsXFormsXPathNode* JustContext();
|
|
nsXFormsXPathNode* PopContext();
|
|
|
|
PRBool DoRelative();
|
|
|
|
void AbbreviatedStep();
|
|
void AbsoluteLocationPath();
|
|
void AdditiveExpression();
|
|
void AndExpr();
|
|
void AxisSpecifier();
|
|
void EqualityExpr();
|
|
void Expr();
|
|
void FilterExpr();
|
|
void FunctionCall();
|
|
void LocationPath();
|
|
void MultiplicationExpr();
|
|
void NameTest();
|
|
void NodeTest();
|
|
void NodeType();
|
|
void OrExpr();
|
|
void PathExpr();
|
|
void Predicate();
|
|
PRBool PrimaryExpr();
|
|
void RelationalExpression();
|
|
void RelativeLocationPath();
|
|
void Step();
|
|
void UnaryExpr();
|
|
void UnionExpr();
|
|
|
|
#ifdef DEBUG_XF_PARSER
|
|
void Dump(nsXFormsXPathNode* aNode);
|
|
void DumpWithLevel(nsXFormsXPathNode* aNode, PRInt32 aLevel);
|
|
void OutputSubExpression(PRInt32 aOffset, PRInt32 aEndOffset);
|
|
#endif
|
|
|
|
public:
|
|
nsXFormsXPathParser();
|
|
~nsXFormsXPathParser();
|
|
|
|
nsXFormsXPathNode* Parse(const nsAString& aExpression);
|
|
PRBool UsesDynamicFunc() const;
|
|
};
|