mirror of
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113 lines
3.5 KiB
C++
113 lines
3.5 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 XForms support.
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*
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* The Initial Developer of the Original Code is
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* Novell, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Allan Beaufour <abeaufour@novell.com>
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* David Landwehr <dlandwehr@novell.com>
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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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsXFormsXPathScanner.h"
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#include "nsXFormsXPathNode.h"
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#define ANALYZE_STACK_SIZE 120
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/**
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* The XPath Expression parser. Uses nsXFormsXPathScanner to scan the expression
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* and builds a parse tree of nsXFormsXPathNode's.
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*
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* @note Should be reimplemented and moved to Transformiix
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*
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*/
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class nsXFormsXPathParser {
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private:
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nsXFormsXPathScanner mScanner;
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nsXFormsXPathScanner::XPATHTOKEN mPeek;
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PRBool mUsesDynamicFunc;
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nsXFormsXPathNode* mHead;
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int mAnalyzeStackPointer;
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int mPredicateLevel;
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nsXFormsXPathNode* mStack[ANALYZE_STACK_SIZE];
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nsXFormsXPathScanner::XPATHTOKEN PeekToken();
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nsXFormsXPathScanner::XPATHTOKEN PopToken();
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void PushContext(PRInt32 aStartIndex = -100);
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void PushContext(nsXFormsXPathNode* mAnalyze);
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void EndContext();
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void RestartContext();
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nsXFormsXPathNode* JustContext();
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nsXFormsXPathNode* PopContext();
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PRBool DoRelative();
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void AbbreviatedStep();
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void AbsoluteLocationPath();
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void AdditiveExpression();
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void AndExpr();
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void AxisSpecifier();
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void EqualityExpr();
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void Expr();
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void FilterExpr();
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void FunctionCall();
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void LocationPath();
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void MultiplicationExpr();
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void NameTest();
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void NodeTest();
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void NodeType();
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void OrExpr();
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void PathExpr();
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void Predicate();
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PRBool PrimaryExpr();
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void RelationalExpression();
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void RelativeLocationPath();
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void Step();
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void UnaryExpr();
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void UnionExpr();
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#ifdef DEBUG_XF_PARSER
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void Dump(nsXFormsXPathNode* aNode);
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void DumpWithLevel(nsXFormsXPathNode* aNode, PRInt32 aLevel);
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void OutputSubExpression(PRInt32 aOffset, PRInt32 aEndOffset);
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#endif
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public:
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nsXFormsXPathParser();
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~nsXFormsXPathParser();
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nsXFormsXPathNode* Parse(const nsAString& aExpression);
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PRBool UsesDynamicFunc() const;
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};
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