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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef ADC_TKP_HXX
#define ADC_TKP_HXX
// USED SERVICES
// BASE CLASSES
// COMPONENTS
class CharacterSource;
class TkpContext;
// PARAMETRS
/** This is the interface for parser classes, which get a sequence of tokens from
a text.
Start() starts to parse the text from the given i_rSource.
GetNextToken() returns a Token on the heap as long as there are
still characters in the text left. This can be checked by
HasMore().
The algorithms for parsing tokens from the text are an issue of
the derived classes.
*/
class TokenParser
{
public:
// LIFECYCLE
TokenParser();
virtual ~TokenParser() {}
// OPERATIONS
/** Start parsing a character source. Any previously parsed sources
are discarded.
*/
virtual void Start(
CharacterSource &
i_rSource );
/** @short Gets the next identifiable token out of the
source code.
*/
void GetNextToken();
/// @return true, if there are more tokens to parse.
bool HasMore() const { return bHasMore; }
private:
void InitSource(
CharacterSource &
i_rSource );
virtual void SetStartContext() = 0;
virtual void SetCurrentContext(
TkpContext & io_rContext ) = 0;
virtual TkpContext &
CurrentContext() = 0;
// DATA
CharacterSource * pChars;
bool bHasMore;
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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