rlgen-cd/flatcodegen.h

   1 /*
   2  *  Copyright 2004-2006 Adrian Thurston <thurston@cs.queensu.ca>
   3  *            2004 Erich Ocean <eric.ocean@ampede.com>
   4  *            2005 Alan West <alan@alanz.com>
   5  */
   6
   7 /*  This file is part of Ragel.
   8  *
   9  *  Ragel is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  Ragel is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with Ragel; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #ifndef _FLATCODEGEN_H
  25 #define _FLATCODEGEN_H
  26
  27 #include <iostream>
  28 #include "fsmcodegen.h"
  29
  30 /* Forwards. */
  31 struct CodeGenData;
  32 struct NameInst;
  33 struct RedTransAp;
  34 struct RedStateAp;
  35
  36 /*
  37  * FlatCodeGen
  38  */
  39 class FlatCodeGen : virtual public FsmCodeGen
  40 {
  41 public:
  42         FlatCodeGen( ostream &out ) : FsmCodeGen(out) {}
  43         virtual ~FlatCodeGen() { }
  44
  45 protected:
  46         std::ostream &TO_STATE_ACTION_SWITCH();
  47         std::ostream &FROM_STATE_ACTION_SWITCH();
  48         std::ostream &EOF_ACTION_SWITCH();
  49         std::ostream &ACTION_SWITCH();
  50         std::ostream &KEYS();
  51         std::ostream &INDICIES();
  52         std::ostream &FLAT_INDEX_OFFSET();
  53         std::ostream &KEY_SPANS();
  54         std::ostream &TO_STATE_ACTIONS();
  55         std::ostream &FROM_STATE_ACTIONS();
  56         std::ostream &EOF_ACTIONS();
  57         std::ostream &EOF_TRANS();
  58         std::ostream &TRANS_TARGS();
  59         std::ostream &TRANS_ACTIONS();
  60         void LOCATE_TRANS();
  61
  62         std::ostream &COND_INDEX_OFFSET();
  63         void COND_TRANSLATE();
  64         std::ostream &CONDS();
  65         std::ostream &COND_KEYS();
  66         std::ostream &COND_KEY_SPANS();
  67
  68         void GOTO( ostream &ret, int gotoDest, bool inFinish );
  69         void CALL( ostream &ret, int callDest, int targState, bool inFinish );
  70         void NEXT( ostream &ret, int nextDest, bool inFinish );
  71         void GOTO_EXPR( ostream &ret, InlineItem *ilItem, bool inFinish );
  72         void NEXT_EXPR( ostream &ret, InlineItem *ilItem, bool inFinish );
  73         void CALL_EXPR( ostream &ret, InlineItem *ilItem, int targState, bool inFinish );
  74         void CURS( ostream &ret, bool inFinish );
  75         void TARGS( ostream &ret, bool inFinish, int targState );
  76         void RET( ostream &ret, bool inFinish );
  77         void BREAK( ostream &ret, int targState );
  78
  79         virtual std::ostream &TO_STATE_ACTION( RedStateAp *state );
  80         virtual std::ostream &FROM_STATE_ACTION( RedStateAp *state );
  81         virtual std::ostream &EOF_ACTION( RedStateAp *state );
  82         virtual std::ostream &TRANS_ACTION( RedTransAp *trans );
  83
  84         virtual void writeData();
  85         virtual void writeExec();
  86 };
  87
  88 /*
  89  * CFlatCodeGen
  90  */
  91 struct CFlatCodeGen
  92         : public FlatCodeGen, public CCodeGen
  93 {
  94         CFlatCodeGen( ostream &out ) :
  95                 FsmCodeGen(out), FlatCodeGen(out), CCodeGen(out) {}
  96 };
  97
  98 /*
  99  * DFlatCodeGen
 100  */
 101 struct DFlatCodeGen
 102         : public FlatCodeGen, public DCodeGen
 103 {
 104         DFlatCodeGen( ostream &out ) :
 105                 FsmCodeGen(out), FlatCodeGen(out), DCodeGen(out) {}
 106 };
 107
 108 #endif /* _FLATCODEGEN_H */