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/*
* Copyright 2007 Adrian Thurston <thurston@complang.org>
*/
/* This file is part of Colm.
*
* Colm is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Colm 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Colm; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _FSMRUN_H
#define _FSMRUN_H
#include "astring.h"
#include "pdarun.h"
#include "input.h"
#define FSM_BUFSIZE 8192
//#define FSM_BUFSIZE 8
struct GenAction;
struct KlangEl;
struct PdaRun;
struct ParseData;
struct Kid;
struct Pattern;
struct PatternItem;
struct Replacement;
struct ReplItem;
struct FsmTables
{
long *actions;
long *keyOffsets;
char *transKeys;
long *singleLengths;
long *rangeLengths;
long *indexOffsets;
long *transTargsWI;
long *transActionsWI;
long *toStateActions;
long *fromStateActions;
long *eofActions;
long *eofTargs;
long *entryByRegion;
long numStates;
long numActions;
long numTransKeys;
long numSingleLengths;
long numRangeLengths;
long numIndexOffsets;
long numTransTargsWI;
long numTransActionsWI;
long numRegions;
long startState;
long firstFinal;
long errorState;
GenAction **actionSwitch;
long numActionSwitch;
};
struct RunBuf
{
char buf[FSM_BUFSIZE];
long length;
long offset;
RunBuf *next;
};
#define MARK_SLOTS 32
void parse( FsmRun *fsmRun, PdaRun *parser );
struct FsmRun
{
FsmRun( Program *prg );
~FsmRun();
void sendEOF( PdaRun *parser );
void sendBackIgnore( PdaRun *parser, Kid *ignore );
void sendBack( PdaRun *parser, Kid *input );
void queueBack( PdaRun *parser, Kid *input );
void sendBackText( const char *data, long length );
void execAction( GenAction *action );
long scanToken( PdaRun *parser );
void attachInputStream( InputStream *in );
void streamPush( const char *data, long length );
void undoStreamPush( long length );
Head *extractToken( PdaRun *parser, long len );
void execute();
Program *prg;
FsmTables *tables;
InputStream *inputStream;
/* FsmRun State. */
long region, cs, act;
char *tokstart, *tokend;
char *p, *pe, *peof;
bool eofSent;
RunBuf *runBuf;
bool returnResult;
char *mark[MARK_SLOTS];
long matchedToken;
};
void send_queued_tokens( FsmRun *fsmRun, PdaRun *parser );
void send_handle_error( FsmRun *fsmRun, PdaRun *parser, Kid *input );
#endif
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