rlgen-cd/fsmcodegen.h

   1 /*
   2  *  Copyright 2001-2006 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 _FSMCODEGEN_H
  25 #define _FSMCODEGEN_H
  26
  27 #include <iostream>
  28 #include <string>
  29 #include <stdio.h>
  30 #include "common.h"
  31 #include "gendata.h"
  32
  33 using std::string;
  34 using std::ostream;
  35
  36 /* Integer array line length. */
  37 #define IALL 8
  38
  39 /* Forwards. */
  40 struct RedFsmAp;
  41 struct RedStateAp;
  42 struct CodeGenData;
  43 struct Action;
  44 struct NameInst;
  45 struct GenInlineItem;
  46 struct GenInlineList;
  47 struct RedAction;
  48 struct LongestMatch;
  49 struct LongestMatchPart;
  50
  51 inline string itoa( int i )
  52 {
  53         char buf[16];
  54         sprintf( buf, "%i", i );
  55         return buf;
  56 }
  57
  58 /*
  59  * class FsmCodeGen
  60  */
  61 class FsmCodeGen : public CodeGenData
  62 {
  63 public:
  64         FsmCodeGen( ostream &out );
  65         virtual ~FsmCodeGen() {}
  66
  67         virtual void finishRagelDef();
  68         virtual void writeInit();
  69
  70 protected:
  71         string FSM_NAME();
  72         string START_STATE_ID();
  73         ostream &ACTIONS_ARRAY();
  74         string GET_WIDE_KEY();
  75         string GET_WIDE_KEY( RedStateAp *state );
  76         string TABS( int level );
  77         string KEY( Key key );
  78         string LDIR_PATH( char *path );
  79         void ACTION( ostream &ret, Action *action, int targState,
  80                         bool inFinish, bool csForced );
  81         void CONDITION( ostream &ret, Action *condition );
  82         string ALPH_TYPE();
  83         string WIDE_ALPH_TYPE();
  84         string ARRAY_TYPE( unsigned long maxVal );
  85
  86         virtual string ARR_OFF( string ptr, string offset ) = 0;
  87         virtual string CAST( string type ) = 0;
  88         virtual string UINT() = 0;
  89         virtual string NULL_ITEM() = 0;
  90         virtual string POINTER() = 0;
  91         virtual string GET_KEY();
  92         virtual ostream &SWITCH_DEFAULT() = 0;
  93
  94         string P();
  95         string PE();
  96         string EOFV();
  97
  98         string ACCESS();
  99         string CS();
 100         string STACK();
 101         string TOP();
 102         string TOKSTART();
 103         string TOKEND();
 104         string ACT();
 105
 106         string DATA_PREFIX();
 107         string PM() { return "_" + DATA_PREFIX() + "partition_map"; }
 108         string C() { return "_" + DATA_PREFIX() + "cond_spaces"; }
 109         string CK() { return "_" + DATA_PREFIX() + "cond_keys"; }
 110         string K() { return "_" + DATA_PREFIX() + "trans_keys"; }
 111         string I() { return "_" + DATA_PREFIX() + "indicies"; }
 112         string CO() { return "_" + DATA_PREFIX() + "cond_offsets"; }
 113         string KO() { return "_" + DATA_PREFIX() + "key_offsets"; }
 114         string IO() { return "_" + DATA_PREFIX() + "index_offsets"; }
 115         string CL() { return "_" + DATA_PREFIX() + "cond_lengths"; }
 116         string SL() { return "_" + DATA_PREFIX() + "single_lengths"; }
 117         string RL() { return "_" + DATA_PREFIX() + "range_lengths"; }
 118         string A() { return "_" + DATA_PREFIX() + "actions"; }
 119         string TA() { return "_" + DATA_PREFIX() + "trans_actions"; }
 120         string TT() { return "_" + DATA_PREFIX() + "trans_targs"; }
 121         string TSA() { return "_" + DATA_PREFIX() + "to_state_actions"; }
 122         string FSA() { return "_" + DATA_PREFIX() + "from_state_actions"; }
 123         string EA() { return "_" + DATA_PREFIX() + "eof_actions"; }
 124         string ET() { return "_" + DATA_PREFIX() + "eof_trans"; }
 125         string SP() { return "_" + DATA_PREFIX() + "key_spans"; }
 126         string CSP() { return "_" + DATA_PREFIX() + "cond_key_spans"; }
 127         string START() { return DATA_PREFIX() + "start"; }
 128         string ERROR() { return DATA_PREFIX() + "error"; }
 129         string FIRST_FINAL() { return DATA_PREFIX() + "first_final"; }
 130         string CTXDATA() { return DATA_PREFIX() + "ctxdata"; }
 131
 132         void INLINE_LIST( ostream &ret, GenInlineList *inlineList,
 133                         int targState, bool inFinish, bool csForced );
 134         virtual void GOTO( ostream &ret, int gotoDest, bool inFinish ) = 0;
 135         virtual void CALL( ostream &ret, int callDest, int targState, bool inFinish ) = 0;
 136         virtual void NEXT( ostream &ret, int nextDest, bool inFinish ) = 0;
 137         virtual void GOTO_EXPR( ostream &ret, GenInlineItem *ilItem, bool inFinish ) = 0;
 138         virtual void NEXT_EXPR( ostream &ret, GenInlineItem *ilItem, bool inFinish ) = 0;
 139         virtual void CALL_EXPR( ostream &ret, GenInlineItem *ilItem,
 140                         int targState, bool inFinish ) = 0;
 141         virtual void RET( ostream &ret, bool inFinish ) = 0;
 142         virtual void BREAK( ostream &ret, int targState, bool csForced ) = 0;
 143         virtual void CURS( ostream &ret, bool inFinish ) = 0;
 144         virtual void TARGS( ostream &ret, bool inFinish, int targState ) = 0;
 145         void EXEC( ostream &ret, GenInlineItem *item, int targState, int inFinish );
 146         void LM_SWITCH( ostream &ret, GenInlineItem *item, int targState,
 147                         int inFinish, bool csForced );
 148         void SET_ACT( ostream &ret, GenInlineItem *item );
 149         void INIT_TOKSTART( ostream &ret, GenInlineItem *item );
 150         void INIT_ACT( ostream &ret, GenInlineItem *item );
 151         void SET_TOKSTART( ostream &ret, GenInlineItem *item );
 152         void SET_TOKEND( ostream &ret, GenInlineItem *item );
 153         void GET_TOKEND( ostream &ret, GenInlineItem *item );
 154         void SUB_ACTION( ostream &ret, GenInlineItem *item,
 155                         int targState, bool inFinish, bool csForced );
 156         void STATE_IDS();
 157
 158         string ERROR_STATE();
 159         string FIRST_FINAL_STATE();
 160
 161         virtual string PTR_CONST() = 0;
 162         virtual ostream &OPEN_ARRAY( string type, string name ) = 0;
 163         virtual ostream &CLOSE_ARRAY() = 0;
 164         virtual ostream &STATIC_VAR( string type, string name ) = 0;
 165
 166         virtual string CTRL_FLOW() = 0;
 167
 168         ostream &source_warning(const GenInputLoc &loc);
 169         ostream &source_error(const GenInputLoc &loc);
 170
 171         unsigned int arrayTypeSize( unsigned long maxVal );
 172
 173         bool outLabelUsed;
 174         bool testEofUsed;
 175         bool againLabelUsed;
 176         bool useIndicies;
 177
 178         void genLineDirective( ostream &out );
 179
 180 public:
 181         /* Determine if we should use indicies. */
 182         virtual void calcIndexSize() {}
 183 };
 184
 185 class CCodeGen : virtual public FsmCodeGen
 186 {
 187 public:
 188         CCodeGen( ostream &out ) : FsmCodeGen(out) {}
 189
 190         virtual string NULL_ITEM();
 191         virtual string POINTER();
 192         virtual ostream &SWITCH_DEFAULT();
 193         virtual ostream &OPEN_ARRAY( string type, string name );
 194         virtual ostream &CLOSE_ARRAY();
 195         virtual ostream &STATIC_VAR( string type, string name );
 196         virtual string ARR_OFF( string ptr, string offset );
 197         virtual string CAST( string type );
 198         virtual string UINT();
 199         virtual string PTR_CONST();
 200         virtual string CTRL_FLOW();
 201
 202         virtual void writeExports();
 203 };
 204
 205 class DCodeGen : virtual public FsmCodeGen
 206 {
 207 public:
 208         DCodeGen( ostream &out ) : FsmCodeGen(out) {}
 209
 210         virtual string NULL_ITEM();
 211         virtual string POINTER();
 212         virtual ostream &SWITCH_DEFAULT();
 213         virtual ostream &OPEN_ARRAY( string type, string name );
 214         virtual ostream &CLOSE_ARRAY();
 215         virtual ostream &STATIC_VAR( string type, string name );
 216         virtual string ARR_OFF( string ptr, string offset );
 217         virtual string CAST( string type );
 218         virtual string UINT();
 219         virtual string PTR_CONST();
 220         virtual string CTRL_FLOW();
 221
 222         virtual void writeExports();
 223 };
 224
 225 #endif /* _FSMCODEGEN_H */