rlgen-ruby/ruby-codegen.h

   1 /*
   2  *  2007 Victor Hugo Borja <vic@rubyforge.org>
   3  *  Copyright 2001-2007 Adrian Thurston <thurston@cs.queensu.ca>
   4  */
   5
   6 /*  This file is part of Ragel.
   7  *
   8  *  Ragel is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  Ragel is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with Ragel; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #ifndef _RUBY_CODEGEN_H
  24 #define _RUBY_CODEGEN_H
  25
  26 #include "common.h"
  27 #include "gendata.h"
  28
  29 /* Integer array line length. */
  30 #define IALL 8
  31
  32 inline string itoa( int i )
  33 {
  34         char buf[16];
  35         sprintf( buf, "%i", i );
  36         return buf;
  37 }
  38
  39
  40 class RubyCodeGen : public CodeGenData
  41 {
  42 public:
  43    RubyCodeGen( ostream &out ) : CodeGenData(out) { }
  44    virtual ~RubyCodeGen() {}
  45 protected:
  46         ostream &START_ARRAY_LINE();
  47         ostream &ARRAY_ITEM( string item, int count, bool last );
  48         ostream &END_ARRAY_LINE();
  49
  50
  51         string FSM_NAME();
  52
  53         string START_STATE_ID();
  54         string ERROR_STATE();
  55         string FIRST_FINAL_STATE();
  56         void INLINE_LIST(ostream &ret, InlineList *inlineList, int targState, bool inFinish);
  57         string ACCESS();
  58
  59         void ACTION( ostream &ret, Action *action, int targState, bool inFinish );
  60         string GET_KEY();
  61         string GET_WIDE_KEY();
  62         string GET_WIDE_KEY( RedStateAp *state );
  63         string KEY( Key key );
  64         string TABS( int level );
  65         string INT( int i );
  66         void CONDITION( ostream &ret, Action *condition );
  67         string ALPH_TYPE();
  68         string WIDE_ALPH_TYPE();
  69         string ARRAY_TYPE( unsigned long maxVal );
  70         ostream &ACTIONS_ARRAY();
  71         void STATE_IDS();
  72
  73
  74         string DATA_PREFIX();
  75         string PM() { return "_" + DATA_PREFIX() + "partition_map"; }
  76         string C() { return "_" + DATA_PREFIX() + "cond_spaces"; }
  77         string CK() { return "_" + DATA_PREFIX() + "cond_keys"; }
  78         string K() { return "_" + DATA_PREFIX() + "trans_keys"; }
  79         string I() { return "_" + DATA_PREFIX() + "indicies"; }
  80         string CO() { return "_" + DATA_PREFIX() + "cond_offsets"; }
  81         string KO() { return "_" + DATA_PREFIX() + "key_offsets"; }
  82         string IO() { return "_" + DATA_PREFIX() + "index_offsets"; }
  83         string CL() { return "_" + DATA_PREFIX() + "cond_lengths"; }
  84         string SL() { return "_" + DATA_PREFIX() + "single_lengths"; }
  85         string RL() { return "_" + DATA_PREFIX() + "range_lengths"; }
  86         string A() { return "_" + DATA_PREFIX() + "actions"; }
  87         string TA() { return "_" + DATA_PREFIX() + "trans_actions_wi"; }
  88         string TT() { return "_" + DATA_PREFIX() + "trans_targs_wi"; }
  89         string TSA() { return "_" + DATA_PREFIX() + "to_state_actions"; }
  90         string FSA() { return "_" + DATA_PREFIX() + "from_state_actions"; }
  91         string EA() { return "_" + DATA_PREFIX() + "eof_actions"; }
  92         string ET() { return "_" + DATA_PREFIX() + "eof_trans"; }
  93         string SP() { return "_" + DATA_PREFIX() + "key_spans"; }
  94         string CSP() { return "_" + DATA_PREFIX() + "cond_key_spans"; }
  95         string START() { return DATA_PREFIX() + "start"; }
  96         string ERROR() { return DATA_PREFIX() + "error"; }
  97         string FIRST_FINAL() { return DATA_PREFIX() + "first_final"; }
  98         string CTXDATA() { return DATA_PREFIX() + "ctxdata"; }
  99
 100 public:
 101         string NULL_ITEM();
 102         ostream &OPEN_ARRAY( string type, string name );
 103         ostream &CLOSE_ARRAY();
 104         ostream &STATIC_VAR( string type, string name );
 105         string ARR_OFF( string ptr, string offset );
 106
 107         string P();
 108         string PE();
 109         string EOFV();
 110
 111         string CS();
 112         string TOP();
 113         string STACK();
 114         string ACT();
 115         string TOKSTART();
 116         string TOKEND();
 117         string DATA();
 118
 119
 120         void finishRagelDef();
 121         unsigned int arrayTypeSize( unsigned long maxVal );
 122
 123 protected:
 124         virtual void writeExports();
 125         virtual void writeInit();
 126
 127         /* Determine if we should use indicies. */
 128         virtual void calcIndexSize();
 129
 130         virtual void BREAK( ostream &ret, int targState ) = 0;
 131         virtual void GOTO( ostream &ret, int gotoDest, bool inFinish ) = 0;
 132         virtual void GOTO_EXPR( ostream &ret, InlineItem *ilItem, bool inFinish ) = 0;
 133         virtual void CALL( ostream &ret, int callDest, int targState, bool inFinish ) = 0;
 134         virtual void CALL_EXPR( ostream &ret, InlineItem *ilItem, int targState, bool inFinish ) = 0;
 135         virtual void RET( ostream &ret, bool inFinish ) = 0;
 136
 137
 138         virtual void NEXT( ostream &ret, int nextDest, bool inFinish ) = 0;
 139         virtual void NEXT_EXPR( ostream &ret, InlineItem *ilItem, bool inFinish ) = 0;
 140
 141         virtual int TO_STATE_ACTION( RedStateAp *state ) = 0;
 142         virtual int FROM_STATE_ACTION( RedStateAp *state ) = 0;
 143         virtual int EOF_ACTION( RedStateAp *state ) = 0;
 144
 145         virtual int TRANS_ACTION( RedTransAp *trans );
 146
 147         void EXEC( ostream &ret, InlineItem *item, int targState, int inFinish );
 148         void LM_SWITCH( ostream &ret, InlineItem *item, int targState, int inFinish );
 149         void SET_ACT( ostream &ret, InlineItem *item );
 150         void INIT_TOKSTART( ostream &ret, InlineItem *item );
 151         void INIT_ACT( ostream &ret, InlineItem *item );
 152         void SET_TOKSTART( ostream &ret, InlineItem *item );
 153         void SET_TOKEND( ostream &ret, InlineItem *item );
 154         void GET_TOKEND( ostream &ret, InlineItem *item );
 155         void SUB_ACTION( ostream &ret, InlineItem *item, int targState, bool inFinish );
 156
 157 protected:
 158         ostream &source_warning(const InputLoc &loc);
 159         ostream &source_error(const InputLoc &loc);
 160
 161
 162         /* fields */
 163         bool outLabelUsed;
 164         bool againLabelUsed;
 165         bool useIndicies;
 166
 167 };
 168
 169 /*
 170  * Local Variables:
 171  * mode: c++
 172  * indent-tabs-mode: 1
 173  * c-file-style: "bsd"
 174  * End:
 175  */
 176
 177 #endif