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/*
* Copyright 2001-2012 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 _FSMCODEGEN_H
#define _FSMCODEGEN_H
#include <iostream>
#include <string>
#include <stdio.h>
#include "keyops.h"
#include "parsedata.h"
#include "redfsm.h"
using std::string;
using std::ostream;
/* Integer array line length. */
#define IALL 8
/* Forwards. */
struct RedFsm;
struct RedState;
struct GenAction;
struct NameInst;
struct RedAction;
struct LongestMatch;
struct TokenInstance;
struct InlineList;
struct InlineItem;
struct NameInst;
struct FsmCodeGen;
typedef unsigned long ulong;
typedef unsigned char uchar;
/*
* The interface to the parser
*/
std::ostream *openOutput( char *inputFile );
inline string itoa( int i )
{
char buf[16];
sprintf( buf, "%i", i );
return buf;
}
/*
* class FsmCodeGen
*/
class FsmCodeGen
{
public:
FsmCodeGen( ostream &out, RedFsm *redFsm, FsmTables *fsmTables );
protected:
string FSM_NAME();
string START_STATE_ID();
ostream &ACTIONS_ARRAY();
string GET_WIDE_KEY();
string GET_WIDE_KEY( RedState *state );
string TABS( int level );
string KEY( Key key );
string LDIR_PATH( char *path );
void ACTION( ostream &ret, GenAction *action, int targState, bool inFinish );
void CONDITION( ostream &ret, GenAction *condition );
string ALPH_TYPE();
string WIDE_ALPH_TYPE();
string ARRAY_TYPE( unsigned long maxVal );
string ARR_OFF( string ptr, string offset );
string CAST( string type );
string UINT();
string GET_KEY();
string ACCESS() { return "fsmRun->"; }
string P() { return ACCESS() + "p"; }
string PE() { return ACCESS() + "pe"; }
string DATA_EOF() { return ACCESS() + "eof"; }
string CS();
string TOP() { return ACCESS() + "top"; }
string TOKSTART() { return ACCESS() + "tokstart"; }
string TOKEND() { return ACCESS() + "tokend"; }
string BLOCK_START() { return ACCESS() + "start"; }
string TOKLEN() { return ACCESS() + "toklen"; }
string ACT() { return ACCESS() + "act"; }
string MATCHED_TOKEN() { return ACCESS() + "matchedToken"; }
string DATA_PREFIX();
string START() { return DATA_PREFIX() + "start"; }
string ERROR() { return DATA_PREFIX() + "error"; }
string FIRST_FINAL() { return DATA_PREFIX() + "first_final"; }
string ENTRY_BY_REGION() { return DATA_PREFIX() + "entryByRegion"; }
void INLINE_LIST( ostream &ret, InlineList *inlineList,
int targState, bool inFinish );
void EXEC_TOKEND( ostream &ret, InlineItem *item, int targState, int inFinish );
void EXECTE( ostream &ret, InlineItem *item, int targState, int inFinish );
void LM_SWITCH( ostream &ret, InlineItem *item, int targState, int inFinish );
void SET_ACT( ostream &ret, InlineItem *item );
void INIT_TOKSTART( ostream &ret, InlineItem *item );
void INIT_ACT( ostream &ret, InlineItem *item );
void SET_TOKSTART( ostream &ret, InlineItem *item );
void SET_TOKEND( ostream &ret, InlineItem *item );
void GET_TOKEND( ostream &ret, InlineItem *item );
void SUB_ACTION( ostream &ret, InlineItem *item, int targState, bool inFinish );
void LM_ON_LAST( ostream &ret, InlineItem *item );
void LM_ON_NEXT( ostream &ret, InlineItem *item );
void LM_ON_LAG_BEHIND( ostream &ret, InlineItem *item );
void EXEC_TOKEND( ostream &ret );
void EMIT_TOKEN( ostream &ret, LangEl *token );
string ERROR_STATE();
string FIRST_FINAL_STATE();
string PTR_CONST();
ostream &OPEN_ARRAY( string type, string name );
ostream &CLOSE_ARRAY();
ostream &STATIC_VAR( string type, string name );
string CTRL_FLOW();
unsigned int arrayTypeSize( unsigned long maxVal );
public:
ostream &out;
RedFsm *redFsm;
FsmTables *fsmTables;
int codeGenErrCount;
/* Write options. */
bool dataPrefix;
bool writeFirstFinal;
bool writeErr;
bool skipTokenLabelNeeded;
std::ostream &TO_STATE_ACTION_SWITCH();
std::ostream &FROM_STATE_ACTION_SWITCH();
std::ostream &ACTION_SWITCH();
std::ostream &STATE_GOTOS();
std::ostream &TRANSITIONS();
std::ostream &EXEC_FUNCS();
unsigned int TO_STATE_ACTION( RedState *state );
unsigned int FROM_STATE_ACTION( RedState *state );
std::ostream &TO_STATE_ACTIONS();
std::ostream &FROM_STATE_ACTIONS();
void emitCondBSearch( RedState *state, int level, int low, int high );
void STATE_CONDS( RedState *state, bool genDefault );
void emitSingleSwitch( RedState *state );
void emitRangeBSearch( RedState *state, int level, int low, int high );
std::ostream &EXIT_STATES();
std::ostream &TRANS_GOTO( RedTrans *trans, int level );
std::ostream &FINISH_CASES();
void writeIncludes();
void writeData();
void writeInit();
void writeExec();
void writeCode();
void writeMain( long activeRealm );
protected:
bool useAgainLabel();
/* Called from GotoCodeGen::STATE_GOTOS just before writing the gotos for
* each state. */
bool IN_TRANS_ACTIONS( RedState *state );
void GOTO_HEADER( RedState *state );
void STATE_GOTO_ERROR();
/* Set up labelNeeded flag for each state. */
void setLabelsNeeded();
};
#endif /* _FSMCODEGEN_H */
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