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