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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
* Axel Hecht.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Axel Hecht <axel@pike.org>
*
* 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 ***** */
#ifndef __TX_I_XPATH_CONTEXT
#define __TX_I_XPATH_CONTEXT
#include "txCore.h"
class FunctionCall;
class nsIAtom;
class txAExprResult;
class txResultRecycler;
class txXPathNode;
/*
* txIParseContext
*
* This interface describes the context needed to create
* XPath Expressions and XSLT Patters.
* (not completely though. key() requires the ProcessorState, which is
* not part of this interface.)
*/
class txIParseContext
{
public:
virtual ~txIParseContext()
{
}
/*
* Return a namespaceID for a given prefix.
*/
virtual nsresult resolveNamespacePrefix(nsIAtom* aPrefix, PRInt32& aID) = 0;
/*
* Create a FunctionCall, needed for extension function calls and
* XSLT. XPath function calls are resolved by the Parser.
*/
virtual nsresult resolveFunctionCall(nsIAtom* aName, PRInt32 aID,
FunctionCall*& aFunction) = 0;
/**
* Should nametests parsed in this context be case-sensitive
*/
virtual PRBool caseInsensitiveNameTests() = 0;
/*
* Callback to be used by the Parser if errors are detected.
*/
virtual void SetErrorOffset(PRUint32 aOffset) = 0;
};
/*
* txIMatchContext
*
* Interface used for matching XSLT Patters.
* This is the part of txIEvalContext (see below), that is independent
* of the context node when evaluating a XPath expression, too.
* When evaluating a XPath expression, |txIMatchContext|s are used
* to transport the information from Step to Step.
*/
class txIMatchContext
{
public:
virtual ~txIMatchContext()
{
}
/*
* Return the ExprResult associated with the variable with the
* given namespace and local name.
*/
virtual nsresult getVariable(PRInt32 aNamespace, nsIAtom* aLName,
txAExprResult*& aResult) = 0;
/*
* Is whitespace stripping allowed for the given node?
* See http://www.w3.org/TR/xslt#strip
*/
virtual MBool isStripSpaceAllowed(const txXPathNode& aNode) = 0;
/**
* Returns a pointer to the private context
*/
virtual void* getPrivateContext() = 0;
virtual txResultRecycler* recycler() = 0;
/*
* Callback to be used by the expression/pattern if errors are detected.
*/
virtual void receiveError(const nsAString& aMsg, nsresult aRes) = 0;
};
#define TX_DECL_MATCH_CONTEXT \
nsresult getVariable(PRInt32 aNamespace, nsIAtom* aLName, \
txAExprResult*& aResult); \
MBool isStripSpaceAllowed(const txXPathNode& aNode); \
void* getPrivateContext(); \
txResultRecycler* recycler(); \
void receiveError(const nsAString& aMsg, nsresult aRes)
class txIEvalContext : public txIMatchContext
{
public:
virtual ~txIEvalContext()
{
}
/*
* Get the context node.
*/
virtual const txXPathNode& getContextNode() = 0;
/*
* Get the size of the context node set.
*/
virtual PRUint32 size() = 0;
/*
* Get the position of the context node in the context node set,
* starting with 1.
*/
virtual PRUint32 position() = 0;
};
#define TX_DECL_EVAL_CONTEXT \
TX_DECL_MATCH_CONTEXT; \
const txXPathNode& getContextNode(); \
PRUint32 size(); \
PRUint32 position()
#endif // __TX_I_XPATH_CONTEXT
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