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/*
* Copyright 2001-2018 Adrian Thurston <thurston@colm.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef IPGOTO_H
#define IPGOTO_H
#include <iostream>
#include "goto.h"
/* Forwards. */
struct CodeGenData;
/*
* class FGotoCodeGen
*/
class IpGoto
: public Goto
{
public:
IpGoto( const CodeGenArgs &args )
:
Goto( args, Ip ),
stLabel(0),
ctrLabel(0),
outLabel(0),
popLabel(0)
{}
std::ostream &EXIT_STATES();
std::ostream &TRANS_GOTO( RedTransAp *trans );
std::ostream &COND_GOTO( RedCondPair *trans );
std::ostream &FINISH_CASES();
std::ostream &AGAIN_CASES();
std::ostream &STATE_GOTOS();
std::ostream &STATE_GOTO_CASES();
/* unused. */
virtual std::ostream &ACTION_SWITCH() { return out; }
virtual std::ostream &EXEC_FUNCS() { return out; }
virtual std::ostream &TO_STATE_ACTION_SWITCH() { return out; }
virtual std::ostream &FROM_STATE_ACTION_SWITCH() { return out; }
virtual std::ostream &EOF_ACTION_SWITCH() { return out; }
/* Unused */
virtual void FROM_STATE_ACTIONS() {}
virtual void TO_STATE_ACTIONS() {}
virtual void REG_ACTIONS() {}
virtual void EOF_ACTIONS() {}
void GOTO( ostream &ret, int gotoDest, bool inFinish );
void CALL( ostream &ret, int callDest, int targState, bool inFinish );
void NCALL( ostream &ret, int callDest, int targState, bool inFinish );
void NEXT( ostream &ret, int nextDest, bool inFinish );
void GOTO_EXPR( ostream &ret, GenInlineItem *ilItem, bool inFinish );
void NEXT_EXPR( ostream &ret, GenInlineItem *ilItem, bool inFinish );
void CALL_EXPR( ostream &ret, GenInlineItem *ilItem, int targState, bool inFinish );
void NCALL_EXPR( ostream &ret, GenInlineItem *ilItem, int targState, bool inFinish );
void RET( ostream &ret, bool inFinish );
void NRET( ostream &ret, bool inFinish );
void CURS( ostream &ret, bool inFinish );
void TARGS( ostream &ret, bool inFinish, int targState );
void BREAK( ostream &ret, int targState, bool csForced );
void NBREAK( ostream &ret, int targState, bool csForced );
virtual void genAnalysis();
virtual void writeData();
virtual void writeExec();
protected:
bool useAgainLabel();
/* Called from Goto::STATE_GOTOS just before writing the gotos for
* each state. */
bool IN_TRANS_ACTIONS( RedStateAp *state );
void GOTO_HEADER( RedStateAp *state );
void STATE_GOTO_ERROR();
/* Set up labelNeeded flag for each state. */
void setLabelsNeeded( RedCondPair *pair );
void setLabelsNeeded( GenInlineList *inlineList );
void setLabelsNeeded();
void NFA_PUSH_ACTION( RedNfaTarg *targ );
void NFA_POP_TEST( RedNfaTarg *targ );
virtual void NFA_FROM_STATE_ACTION_EXEC();
void NFA_PUSH_ST( RedStateAp *state );
void tableDataPass();
IpLabel *stLabel;
IpLabel *ctrLabel;
IpLabel *outLabel;
IpLabel *popLabel;
};
namespace C
{
class IpGoto
:
public ::IpGoto
{
public:
IpGoto( const CodeGenArgs &args )
: ::IpGoto( args )
{}
};
}
#endif
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