161 lines
5.6 KiB
C++
161 lines
5.6 KiB
C++
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/*************************************************************************
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*
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* $RCSfile: tkpstama.hxx,v $
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*
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* $Revision: 1.1.1.1 $
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*
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* last change: $Author: np $ $Date: 2002-03-08 14:45:33 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#ifndef ADC_TKPSTAMA_HXX
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#define ADC_TKPSTAMA_HXX
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// USED SERVICES
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// BASE CLASSES
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#include <tokens/tkpcontx.hxx>
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// COMPONENTS
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#include <tokens/stmstarr.hxx>
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#include <tokens/stmstfin.hxx>
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/** @descr
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This state-machine models state transitions from one state to another
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per indices of branches. If the indices represent ascii-char-values,
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the state-machine can be used for recognising tokens of text.
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The state-machine can be a status itself.
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StateMachine needs the array-size of all stati as a guess, how many stati
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the state machine will contain, when at work.
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**/
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class StateMachine
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{
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public:
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// Types
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typedef StmStatus::Branch Branch;
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typedef StmStatus * * StatusList;
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//# Interface self
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// LIFECYCLE
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StateMachine(
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intt in_nStatusSize,
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intt in_nInitial_StatusListSize ); /// The user of the constructor should guess
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/// the approximate number of stati here to
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/// avoid multiple reallocations.
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/// @#AddStatus
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intt AddStatus( /// @return the new #Status' ID
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DYN StmStatus * let_dpStatus);
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/// @#AddToken
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void AddToken(
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const char * in_sToken,
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TextToken::F_CRTOK in_fTokenCreateFunction,
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const INT16 * in_aBranches,
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INT16 in_nBoundsStatus );
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~StateMachine();
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// FOR TESTS ONLY:
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void PrintOut();
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// OPERATIONS
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StmBoundsStatus &
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GetCharChain(
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TextToken::F_CRTOK &
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o_nTokenCreateFunction,
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CharacterSource & io_rText );
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private:
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// SERVICE FUNCTIONS
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StmStatus & Status(
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intt in_nStatusNr) const;
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StmArrayStatus &
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CurrentStatus() const;
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StmBoundsStatus *
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BoundsStatus() const;
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/// Sets the PeekedStatus.
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void Peek(
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intt in_nBranch);
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void ResizeStati(); // Adds space for 32 stati.
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// DATA
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StatusList pStati; /// List of Status, implemented as simple C-array of length #nStatiSpace
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/// with nStatiLength valid members (beginning from zero).
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intt nCurrentStatus;
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intt nPeekedStatus;
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intt nStatusSize; /// Size of the branch array of a single status.
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intt nNrofStati; /// Nr of Stati so far.
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intt nStatiSpace; /// Size of allocated array for #pStati (size in items).
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};
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/** @#AddToken
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@descr
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Adds a token, which will be recogniszeds by the
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statemachine.
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**/
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#endif
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