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/*
* Copyright 2001-2006 Adrian Thurston <thurston@cs.queensu.ca>
* 2004 Erich Ocean <eric.ocean@ampede.com>
* 2005 Alan West <alan@alanz.com>
*/
/* This file is part of Ragel.
*
* Ragel 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.
*
* Ragel 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 Ragel; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _GOTOCODEGEN_H
#define _GOTOCODEGEN_H
#include <iostream>
#include "fsmcodegen.h"
/* Forwards. */
struct CodeGenData;
struct NameInst;
struct RedTransAp;
struct RedStateAp;
struct StateCond;
/*
* Goto driven fsm.
*/
class GotoCodeGen : virtual public FsmCodeGen
{
public:
GotoCodeGen( ostream &out ) : FsmCodeGen(out) {}
std::ostream &TO_STATE_ACTION_SWITCH();
std::ostream &FROM_STATE_ACTION_SWITCH();
std::ostream &EOF_ACTION_SWITCH();
std::ostream &ACTION_SWITCH();
std::ostream &STATE_GOTOS();
std::ostream &TRANSITIONS();
std::ostream &EXEC_FUNCS();
std::ostream &FINISH_CASES();
void GOTO( ostream &ret, int gotoDest, bool inFinish );
void CALL( ostream &ret, int callDest, int targState, bool inFinish );
void NEXT( ostream &ret, int nextDest, bool inFinish );
void GOTO_EXPR( ostream &ret, InlineItem *ilItem, bool inFinish );
void NEXT_EXPR( ostream &ret, InlineItem *ilItem, bool inFinish );
void CALL_EXPR( ostream &ret, InlineItem *ilItem, int targState, bool inFinish );
void CURS( ostream &ret, bool inFinish );
void TARGS( ostream &ret, bool inFinish, int targState );
void RET( ostream &ret, bool inFinish );
void BREAK( ostream &ret, int targState );
virtual unsigned int TO_STATE_ACTION( RedStateAp *state );
virtual unsigned int FROM_STATE_ACTION( RedStateAp *state );
virtual unsigned int EOF_ACTION( RedStateAp *state );
std::ostream &TO_STATE_ACTIONS();
std::ostream &FROM_STATE_ACTIONS();
std::ostream &EOF_ACTIONS();
void COND_TRANSLATE( StateCond *stateCond, int level );
void emitCondBSearch( RedStateAp *state, int level, int low, int high );
void STATE_CONDS( RedStateAp *state, bool genDefault );
virtual std::ostream &TRANS_GOTO( RedTransAp *trans, int level );
void emitSingleSwitch( RedStateAp *state );
void emitRangeBSearch( RedStateAp *state, int level, int low, int high );
/* Called from STATE_GOTOS just before writing the gotos */
virtual void GOTO_HEADER( RedStateAp *state );
virtual void STATE_GOTO_ERROR();
virtual void writeData();
virtual void writeEOF();
virtual void writeExec();
};
/*
* class CGotoCodeGen
*/
struct CGotoCodeGen
: public GotoCodeGen, public CCodeGen
{
CGotoCodeGen( ostream &out ) :
FsmCodeGen(out), GotoCodeGen(out), CCodeGen(out) {}
};
/*
* class DGotoCodeGen
*/
struct DGotoCodeGen
: public GotoCodeGen, public DCodeGen
{
DGotoCodeGen( ostream &out ) :
FsmCodeGen(out), GotoCodeGen(out), DCodeGen(out) {}
};
#endif /* _GOTOCODEGEN_H */
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