ragel/xmlcodegen.cpp

   1 /*
   2  *  Copyright 2005-2007 Adrian Thurston <thurston@complang.org>
   3  */
   4
   5 /*  This file is part of Ragel.
   6  *
   7  *  Ragel is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  Ragel is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with Ragel; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22
  23 #include "ragel.h"
  24 #include "xmlcodegen.h"
  25 #include "xmlparse.h"
  26 #include "parsedata.h"
  27 #include "fsmgraph.h"
  28 #include "gendata.h"
  29 #include <string.h>
  30
  31 using namespace std;
  32
  33 XMLCodeGen::XMLCodeGen( char *fsmName, ParseData *pd, FsmAp *fsm,
  34                 std::ostream &out, XmlParser &xmlParser )
  35 :
  36         fsmName(fsmName),
  37         pd(pd),
  38         fsm(fsm),
  39         out(out),
  40         xmlParser(xmlParser),
  41         nextActionTableId(0)
  42 {
  43 }
  44
  45
  46 void XMLCodeGen::writeActionList()
  47 {
  48         /* Determine which actions to write. */
  49         int nextActionId = 0;
  50         for ( ActionList::Iter act = pd->actionList; act.lte(); act++ ) {
  51                 if ( act->numRefs() > 0 || act->numCondRefs > 0 )
  52                         act->actionId = nextActionId++;
  53         }
  54
  55         /* Write the list. */
  56         out << "    <action_list length=\"" << nextActionId << "\">\n";
  57         for ( ActionList::Iter act = pd->actionList; act.lte(); act++ ) {
  58                 if ( act->actionId >= 0 )
  59                         writeAction( act );
  60         }
  61         out << "    </action_list>\n";
  62 }
  63
  64 void XMLCodeGen::writeActionTableList()
  65 {
  66         /* Must first order the action tables based on their id. */
  67         int numTables = nextActionTableId;
  68         RedActionTable **tables = new RedActionTable*[numTables];
  69         for ( ActionTableMap::Iter at = actionTableMap; at.lte(); at++ )
  70                 tables[at->id] = at;
  71
  72         out << "    <action_table_list length=\"" << numTables << "\">\n";
  73         for ( int t = 0; t < numTables; t++ ) {
  74                 out << "      <action_table id=\"" << t << "\" length=\"" <<
  75                                 tables[t]->key.length() << "\">";
  76                 for ( ActionTable::Iter atel = tables[t]->key; atel.lte(); atel++ ) {
  77                         out << atel->value->actionId;
  78                         if ( ! atel.last() )
  79                                 out << " ";
  80                 }
  81                 out << "</action_table>\n";
  82         }
  83         out << "    </action_table_list>\n";
  84
  85         delete[] tables;
  86 }
  87
  88 void XMLCodeGen::reduceActionTables()
  89 {
  90         /* Reduce the actions tables to a set. */
  91         for ( StateList::Iter st = fsm->stateList; st.lte(); st++ ) {
  92                 RedActionTable *actionTable = 0;
  93
  94                 /* Reduce To State Actions. */
  95                 if ( st->toStateActionTable.length() > 0 ) {
  96                         if ( actionTableMap.insert( st->toStateActionTable, &actionTable ) )
  97                                 actionTable->id = nextActionTableId++;
  98                 }
  99
 100                 /* Reduce From State Actions. */
 101                 if ( st->fromStateActionTable.length() > 0 ) {
 102                         if ( actionTableMap.insert( st->fromStateActionTable, &actionTable ) )
 103                                 actionTable->id = nextActionTableId++;
 104                 }
 105
 106                 /* Reduce EOF actions. */
 107                 if ( st->eofActionTable.length() > 0 ) {
 108                         if ( actionTableMap.insert( st->eofActionTable, &actionTable ) )
 109                                 actionTable->id = nextActionTableId++;
 110                 }
 111
 112                 /* Loop the transitions and reduce their actions. */
 113                 for ( TransList::Iter trans = st->outList; trans.lte(); trans++ ) {
 114                         if ( trans->actionTable.length() > 0 ) {
 115                                 if ( actionTableMap.insert( trans->actionTable, &actionTable ) )
 116                                         actionTable->id = nextActionTableId++;
 117                         }
 118                 }
 119         }
 120 }
 121
 122 void XMLCodeGen::appendTrans( TransListVect &outList, Key lowKey,
 123                 Key highKey, TransAp *trans )
 124 {
 125         if ( trans->toState != 0 || trans->actionTable.length() > 0 )
 126                 outList.append( TransEl( lowKey, highKey, trans ) );
 127 }
 128
 129 void XMLCodeGen::writeKey( Key key )
 130 {
 131         if ( keyOps->isSigned )
 132                 out << key.getVal();
 133         else
 134                 out << (unsigned long) key.getVal();
 135 }
 136
 137 void XMLCodeGen::writeTrans( Key lowKey, Key highKey, TransAp *trans )
 138 {
 139         /* First reduce the action. */
 140         RedActionTable *actionTable = 0;
 141         if ( trans->actionTable.length() > 0 )
 142                 actionTable = actionTableMap.find( trans->actionTable );
 143
 144         /* Write the transition. */
 145         out << "        <t>";
 146         writeKey( lowKey );
 147         out << " ";
 148         writeKey( highKey );
 149
 150         if ( trans->toState != 0 )
 151                 out << " " << trans->toState->alg.stateNum;
 152         else
 153                 out << " x";
 154
 155         if ( actionTable != 0 )
 156                 out << " " << actionTable->id;
 157         else
 158                 out << " x";
 159         out << "</t>\n";
 160 }
 161
 162 void XMLCodeGen::writeTransList( StateAp *state )
 163 {
 164         TransListVect outList;
 165
 166         /* If there is only are no ranges the task is simple. */
 167         if ( state->outList.length() > 0 ) {
 168                 /* Loop each source range. */
 169                 for ( TransList::Iter trans = state->outList; trans.lte(); trans++ ) {
 170                         /* Reduce the transition. If it reduced to anything then add it. */
 171                         appendTrans( outList, trans->lowKey, trans->highKey, trans );
 172                 }
 173         }
 174
 175         out << "      <trans_list length=\"" << outList.length() << "\">\n";
 176         for ( TransListVect::Iter tvi = outList; tvi.lte(); tvi++ )
 177                 writeTrans( tvi->lowKey, tvi->highKey, tvi->value );
 178         out << "      </trans_list>\n";
 179 }
 180
 181 void XMLCodeGen::writeEofTrans( StateAp *state )
 182 {
 183         RedActionTable *eofActions = 0;
 184         if ( state->eofActionTable.length() > 0 )
 185                 eofActions = actionTableMap.find( state->eofActionTable );
 186
 187         /* The <eof_t> is used when there is an eof target, otherwise the eof
 188          * action goes into state actions. */
 189         if ( state->eofTarget != 0 ) {
 190                 out << "      <eof_t>" << state->eofTarget->alg.stateNum;
 191
 192                 if ( eofActions != 0 )
 193                         out << " " << eofActions->id;
 194                 else
 195                         out << " x";
 196
 197                 out << "</eof_t>" << endl;
 198         }
 199 }
 200
 201 void XMLCodeGen::writeText( InlineItem *item )
 202 {
 203         if ( item->prev == 0 || item->prev->type != InlineItem::Text )
 204                 out << "<text>";
 205         xmlEscapeHost( out, item->data, strlen(item->data) );
 206         if ( item->next == 0 || item->next->type != InlineItem::Text )
 207                 out << "</text>";
 208 }
 209
 210 void XMLCodeGen::writeGoto( InlineItem *item )
 211 {
 212         if ( pd->generatingSectionSubset )
 213                 out << "<goto>-1</goto>";
 214         else {
 215                 EntryMapEl *targ = fsm->entryPoints.find( item->nameTarg->id );
 216                 out << "<goto>" << targ->value->alg.stateNum << "</goto>";
 217         }
 218 }
 219
 220 void XMLCodeGen::writeCall( InlineItem *item )
 221 {
 222         if ( pd->generatingSectionSubset )
 223                 out << "<call>-1</call>";
 224         else {
 225                 EntryMapEl *targ = fsm->entryPoints.find( item->nameTarg->id );
 226                 out << "<call>" << targ->value->alg.stateNum << "</call>";
 227         }
 228 }
 229
 230 void XMLCodeGen::writeNext( InlineItem *item )
 231 {
 232         if ( pd->generatingSectionSubset )
 233                 out << "<next>-1</next>";
 234         else {
 235                 EntryMapEl *targ = fsm->entryPoints.find( item->nameTarg->id );
 236                 out << "<next>" << targ->value->alg.stateNum << "</next>";
 237         }
 238 }
 239
 240 void XMLCodeGen::writeGotoExpr( InlineItem *item )
 241 {
 242         out << "<goto_expr>";
 243         writeInlineList( item->children );
 244         out << "</goto_expr>";
 245 }
 246
 247 void XMLCodeGen::writeCallExpr( InlineItem *item )
 248 {
 249         out << "<call_expr>";
 250         writeInlineList( item->children );
 251         out << "</call_expr>";
 252 }
 253
 254 void XMLCodeGen::writeNextExpr( InlineItem *item )
 255 {
 256         out << "<next_expr>";
 257         writeInlineList( item->children );
 258         out << "</next_expr>";
 259 }
 260
 261 void XMLCodeGen::writeEntry( InlineItem *item )
 262 {
 263         if ( pd->generatingSectionSubset )
 264                 out << "<entry>-1</entry>";
 265         else {
 266                 EntryMapEl *targ = fsm->entryPoints.find( item->nameTarg->id );
 267                 out << "<entry>" << targ->value->alg.stateNum << "</entry>";
 268         }
 269 }
 270
 271 void XMLCodeGen::writeActionExec( InlineItem *item )
 272 {
 273         out << "<exec>";
 274         writeInlineList( item->children );
 275         out << "</exec>";
 276 }
 277
 278 void XMLCodeGen::writeLmOnLast( InlineItem *item )
 279 {
 280         out << "<set_tokend>1</set_tokend>";
 281
 282         if ( item->longestMatchPart->action != 0 ) {
 283                 out << "<sub_action>";
 284                 writeInlineList( item->longestMatchPart->action->inlineList );
 285                 out << "</sub_action>";
 286         }
 287 }
 288
 289 void XMLCodeGen::writeLmOnNext( InlineItem *item )
 290 {
 291         out << "<set_tokend>0</set_tokend>";
 292         out << "<hold></hold>";
 293
 294         if ( item->longestMatchPart->action != 0 ) {
 295                 out << "<sub_action>";
 296                 writeInlineList( item->longestMatchPart->action->inlineList );
 297                 out << "</sub_action>";
 298         }
 299 }
 300
 301 void XMLCodeGen::writeLmOnLagBehind( InlineItem *item )
 302 {
 303         out << "<exec><get_tokend></get_tokend></exec>";
 304
 305         if ( item->longestMatchPart->action != 0 ) {
 306                 out << "<sub_action>";
 307                 writeInlineList( item->longestMatchPart->action->inlineList );
 308                 out << "</sub_action>";
 309         }
 310 }
 311
 312 void XMLCodeGen::writeLmSwitch( InlineItem *item )
 313 {
 314         LongestMatch *longestMatch = item->longestMatch;
 315         out << "<lm_switch>\n";
 316
 317         /* We can't put the <exec> here because we may need to handle the error
 318          * case and in that case p should not be changed. Instead use a default
 319          * label in the switch to adjust p when user actions are not set. An id of
 320          * -1 indicates the default. */
 321
 322         if ( longestMatch->lmSwitchHandlesError ) {
 323                 /* If the switch handles error then we should have also forced the
 324                  * error state. */
 325                 assert( fsm->errState != 0 );
 326
 327                 out << "        <sub_action id=\"0\">";
 328                 out << "<goto>" << fsm->errState->alg.stateNum << "</goto>";
 329                 out << "</sub_action>\n";
 330         }
 331
 332         bool needDefault = false;
 333         for ( LmPartList::Iter lmi = *longestMatch->longestMatchList; lmi.lte(); lmi++ ) {
 334                 if ( lmi->inLmSelect ) {
 335                         if ( lmi->action == 0 )
 336                                 needDefault = true;
 337                         else {
 338                                 /* Open the action. Write it with the context that sets up _p
 339                                  * when doing control flow changes from inside the machine. */
 340                                 out << "        <sub_action id=\"" << lmi->longestMatchId << "\">";
 341                                 out << "<exec><get_tokend></get_tokend></exec>";
 342                                 writeInlineList( lmi->action->inlineList );
 343                                 out << "</sub_action>\n";
 344                         }
 345                 }
 346         }
 347
 348         if ( needDefault ) {
 349                 out << "        <sub_action id=\"-1\"><exec><get_tokend>"
 350                                 "</get_tokend></exec></sub_action>\n";
 351         }
 352
 353         out << "    </lm_switch>";
 354 }
 355
 356 void XMLCodeGen::writeInlineList( InlineList *inlineList )
 357 {
 358         for ( InlineList::Iter item = *inlineList; item.lte(); item++ ) {
 359                 switch ( item->type ) {
 360                 case InlineItem::Text:
 361                         writeText( item );
 362                         break;
 363                 case InlineItem::Goto:
 364                         writeGoto( item );
 365                         break;
 366                 case InlineItem::GotoExpr:
 367                         writeGotoExpr( item );
 368                         break;
 369                 case InlineItem::Call:
 370                         writeCall( item );
 371                         break;
 372                 case InlineItem::CallExpr:
 373                         writeCallExpr( item );
 374                         break;
 375                 case InlineItem::Next:
 376                         writeNext( item );
 377                         break;
 378                 case InlineItem::NextExpr:
 379                         writeNextExpr( item );
 380                         break;
 381                 case InlineItem::Break:
 382                         out << "<break></break>";
 383                         break;
 384                 case InlineItem::Ret:
 385                         out << "<ret></ret>";
 386                         break;
 387                 case InlineItem::PChar:
 388                         out << "<pchar></pchar>";
 389                         break;
 390                 case InlineItem::Char:
 391                         out << "<char></char>";
 392                         break;
 393                 case InlineItem::Curs:
 394                         out << "<curs></curs>";
 395                         break;
 396                 case InlineItem::Targs:
 397                         out << "<targs></targs>";
 398                         break;
 399                 case InlineItem::Entry:
 400                         writeEntry( item );
 401                         break;
 402
 403                 case InlineItem::Hold:
 404                         out << "<hold></hold>";
 405                         break;
 406                 case InlineItem::Exec:
 407                         writeActionExec( item );
 408                         break;
 409
 410                 case InlineItem::LmSetActId:
 411                         out << "<set_act>" <<
 412                                         item->longestMatchPart->longestMatchId <<
 413                                         "</set_act>";
 414                         break;
 415                 case InlineItem::LmSetTokEnd:
 416                         out << "<set_tokend>1</set_tokend>";
 417                         break;
 418
 419                 case InlineItem::LmOnLast:
 420                         writeLmOnLast( item );
 421                         break;
 422                 case InlineItem::LmOnNext:
 423                         writeLmOnNext( item );
 424                         break;
 425                 case InlineItem::LmOnLagBehind:
 426                         writeLmOnLagBehind( item );
 427                         break;
 428                 case InlineItem::LmSwitch:
 429                         writeLmSwitch( item );
 430                         break;
 431
 432                 case InlineItem::LmInitAct:
 433                         out << "<init_act></init_act>";
 434                         break;
 435                 case InlineItem::LmInitTokStart:
 436                         out << "<init_tokstart></init_tokstart>";
 437                         break;
 438                 case InlineItem::LmSetTokStart:
 439                         out << "<set_tokstart></set_tokstart>";
 440                         break;
 441                 }
 442         }
 443 }
 444
 445 void XMLCodeGen::makeKey( GenInlineList *outList, Key key )
 446 {
 447 }
 448
 449 void XMLCodeGen::makeText( GenInlineList *outList, InlineItem *item )
 450 {
 451         GenInlineItem *inlineItem = new GenInlineItem( GenInputLoc(), GenInlineItem::Text );
 452         inlineItem->data = item->data;
 453
 454         outList->append( inlineItem );
 455 }
 456
 457 void XMLCodeGen::makeTargetItem( GenInlineList *outList, InlineItem *item, GenInlineItem::Type type )
 458 {
 459         long targetState;
 460         if ( pd->generatingSectionSubset )
 461                 targetState = -1;
 462         else {
 463                 EntryMapEl *targ = fsm->entryPoints.find( item->nameTarg->id );
 464                 targetState = targ->value->alg.stateNum;
 465         }
 466
 467         /* Make the item. */
 468         GenInlineItem *inlineItem = new GenInlineItem( GenInputLoc(), type );
 469         inlineItem->targId = targetState;
 470         outList->append( inlineItem );
 471 }
 472
 473 /* Make a sublist item with a given type. */
 474 void XMLCodeGen::makeSubList( GenInlineList *outList,
 475                 InlineList *inlineList, GenInlineItem::Type type )
 476 {
 477         /* Fill the sub list. */
 478         GenInlineList *subList = new GenInlineList;
 479         makeGenInlineList( subList, inlineList );
 480
 481         /* Make the item. */
 482         GenInlineItem *inlineItem = new GenInlineItem( GenInputLoc(), type );
 483         inlineItem->children = subList;
 484         outList->append( inlineItem );
 485 }
 486
 487 void XMLCodeGen::makeLmOnLast( GenInlineList *outList, InlineItem *item )
 488 {
 489         makeSetTokend( outList, 1 );
 490
 491         if ( item->longestMatchPart->action != 0 ) {
 492                 makeSubList( outList,
 493                                 item->longestMatchPart->action->inlineList,
 494                                 GenInlineItem::SubAction );
 495         }
 496 }
 497
 498 void XMLCodeGen::makeLmOnNext( GenInlineList *outList, InlineItem *item )
 499 {
 500         makeSetTokend( outList, 0 );
 501         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::Hold ) );
 502
 503         if ( item->longestMatchPart->action != 0 ) {
 504                 makeSubList( outList,
 505                         item->longestMatchPart->action->inlineList,
 506                         GenInlineItem::SubAction );
 507         }
 508 }
 509
 510 void XMLCodeGen::makeLmOnLagBehind( GenInlineList *outList, InlineItem *item )
 511 {
 512         /* Make the sublist containing a just get_tokend. */
 513         GenInlineItem *getTokend = new GenInlineItem( GenInputLoc(), GenInlineItem::LmGetTokEnd );
 514         GenInlineList *subList = new GenInlineList;
 515         subList->append( getTokend );
 516
 517         /* Make the Exec item. */
 518         GenInlineItem *inlineItem = new GenInlineItem( GenInputLoc(), GenInlineItem::Exec );
 519         inlineItem->children = subList;
 520         outList->append( inlineItem );
 521
 522         if ( item->longestMatchPart->action != 0 ) {
 523                 makeSubList( outList,
 524                         item->longestMatchPart->action->inlineList,
 525                         GenInlineItem::SubAction );
 526         }
 527 }
 528
 529
 530 void XMLCodeGen::makeLmSwitch( GenInlineList *outList, InlineItem *item )
 531 {
 532 }
 533
 534 void XMLCodeGen::makeSetTokend( GenInlineList *outList, long offset )
 535 {
 536         GenInlineItem *inlineItem = new GenInlineItem( GenInputLoc(), GenInlineItem::LmSetTokEnd );
 537         inlineItem->offset = offset;
 538         outList->append( inlineItem );
 539 }
 540
 541 void XMLCodeGen::makeSetAct( GenInlineList *outList, long lmId )
 542 {
 543         GenInlineItem *inlineItem = new GenInlineItem( GenInputLoc(), GenInlineItem::LmSetActId );
 544         inlineItem->lmId = lmId;
 545         outList->append( inlineItem );
 546 }
 547
 548 void XMLCodeGen::makeGenInlineList( GenInlineList *outList, InlineList *inList )
 549 {
 550         for ( InlineList::Iter item = *inList; item.lte(); item++ ) {
 551                 switch ( item->type ) {
 552                 case InlineItem::Text:
 553                         makeText( outList, item );
 554                         break;
 555                 case InlineItem::Goto:
 556                         makeTargetItem( outList, item, GenInlineItem::Goto );
 557                         break;
 558                 case InlineItem::GotoExpr:
 559                         makeSubList( outList, item->children, GenInlineItem::GotoExpr );
 560                         break;
 561                 case InlineItem::Call:
 562                         makeTargetItem( outList, item, GenInlineItem::Call );
 563                         break;
 564                 case InlineItem::CallExpr:
 565                         makeSubList( outList, item->children, GenInlineItem::CallExpr );
 566                         break;
 567                 case InlineItem::Next:
 568                         makeTargetItem( outList, item, GenInlineItem::Next );
 569                         break;
 570                 case InlineItem::NextExpr:
 571                         makeSubList( outList, item->children, GenInlineItem::NextExpr );
 572                         break;
 573                 case InlineItem::Break:
 574                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::Break ) );
 575                         break;
 576                 case InlineItem::Ret:
 577                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::Ret ) );
 578                         break;
 579                 case InlineItem::PChar:
 580                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::PChar ) );
 581                         break;
 582                 case InlineItem::Char:
 583                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::Char ) );
 584                         break;
 585                 case InlineItem::Curs:
 586                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::Curs ) );
 587                         break;
 588                 case InlineItem::Targs:
 589                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::Targs ) );
 590                         break;
 591                 case InlineItem::Entry:
 592                         makeTargetItem( outList, item, GenInlineItem::Entry );
 593                         break;
 594
 595                 case InlineItem::Hold:
 596                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::Hold ) );
 597                         break;
 598                 case InlineItem::Exec:
 599                         makeSubList( outList, item->children, GenInlineItem::Exec );
 600                         break;
 601
 602                 case InlineItem::LmSetActId:
 603                         makeSetAct( outList, item->longestMatchPart->longestMatchId );
 604                         break;
 605                 case InlineItem::LmSetTokEnd:
 606                         makeSetTokend( outList, 1 );
 607                         break;
 608
 609                 case InlineItem::LmOnLast:
 610                         makeLmOnLast( outList, item );
 611                         break;
 612                 case InlineItem::LmOnNext:
 613                         makeLmOnNext( outList, item );
 614                         break;
 615                 case InlineItem::LmOnLagBehind:
 616                         makeLmOnLagBehind( outList, item );
 617                         break;
 618                 case InlineItem::LmSwitch:
 619                         makeLmSwitch( outList, item );
 620                         break;
 621
 622                 case InlineItem::LmInitAct:
 623                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::LmInitAct ) );
 624                         break;
 625                 case InlineItem::LmInitTokStart:
 626                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::LmInitTokStart ) );
 627                         break;
 628                 case InlineItem::LmSetTokStart:
 629                         outList->append( new GenInlineItem( GenInputLoc(), GenInlineItem::LmSetTokStart ) );
 630                         xmlParser.cgd->hasLongestMatch = true;
 631                         break;
 632                 }
 633         }
 634 }
 635
 636
 637 void XMLCodeGen::writeAction( Action *action )
 638 {
 639         out << "      <action id=\"" << action->actionId << "\"";
 640         if ( action->name != 0 )
 641                 out << " name=\"" << action->name << "\"";
 642         out << " line=\"" << action->loc.line << "\" col=\"" << action->loc.col << "\">";
 643         writeInlineList( action->inlineList );
 644         out << "</action>\n";
 645 }
 646
 647 void xmlEscapeHost( std::ostream &out, char *data, long len )
 648 {
 649         char *end = data + len;
 650         while ( data != end ) {
 651                 switch ( *data ) {
 652                 case '<': out << "&lt;"; break;
 653                 case '>': out << "&gt;"; break;
 654                 case '&': out << "&amp;"; break;
 655                 default: out << *data; break;
 656                 }
 657                 data += 1;
 658         }
 659 }
 660
 661 void XMLCodeGen::writeStateActions( StateAp *state )
 662 {
 663         RedActionTable *toStateActions = 0;
 664         if ( state->toStateActionTable.length() > 0 )
 665                 toStateActions = actionTableMap.find( state->toStateActionTable );
 666
 667         RedActionTable *fromStateActions = 0;
 668         if ( state->fromStateActionTable.length() > 0 )
 669                 fromStateActions = actionTableMap.find( state->fromStateActionTable );
 670
 671         /* EOF actions go out here only if the state has no eof target. If it has
 672          * an eof target then an eof transition will be used instead. */
 673         RedActionTable *eofActions = 0;
 674         if ( state->eofTarget == 0 && state->eofActionTable.length() > 0 )
 675                 eofActions = actionTableMap.find( state->eofActionTable );
 676
 677         if ( toStateActions != 0 || fromStateActions != 0 || eofActions != 0 ) {
 678                 out << "      <state_actions>";
 679                 if ( toStateActions != 0 )
 680                         out << toStateActions->id;
 681                 else
 682                         out << "x";
 683
 684                 if ( fromStateActions != 0 )
 685                         out << " " << fromStateActions->id;
 686                 else
 687                         out << " x";
 688
 689                 if ( eofActions != 0 )
 690                         out << " " << eofActions->id;
 691                 else
 692                         out << " x";
 693
 694                 out << "</state_actions>\n";
 695         }
 696 }
 697
 698 void XMLCodeGen::writeStateConditions( StateAp *state )
 699 {
 700         if ( state->stateCondList.length() > 0 ) {
 701                 out << "      <cond_list length=\"" << state->stateCondList.length() << "\">\n";
 702                 for ( StateCondList::Iter scdi = state->stateCondList; scdi.lte(); scdi++ ) {
 703                         out << "        <c>";
 704                         writeKey( scdi->lowKey );
 705                         out << " ";
 706                         writeKey( scdi->highKey );
 707                         out << " ";
 708                         out << scdi->condSpace->condSpaceId;
 709                         out << "</c>\n";
 710                 }
 711                 out << "      </cond_list>\n";
 712         }
 713 }
 714
 715 void XMLCodeGen::writeStateList()
 716 {
 717         /* Write the list of states. */
 718         out << "    <state_list length=\"" << fsm->stateList.length() << "\">\n";
 719         for ( StateList::Iter st = fsm->stateList; st.lte(); st++ ) {
 720                 out << "      <state id=\"" << st->alg.stateNum << "\"";
 721                 if ( st->isFinState() )
 722                         out << " final=\"t\"";
 723                 out << ">\n";
 724
 725                 writeStateActions( st );
 726                 writeEofTrans( st );
 727                 writeStateConditions( st );
 728                 writeTransList( st );
 729
 730                 out << "      </state>\n";
 731
 732                 if ( !st.last() )
 733                         out << "\n";
 734         }
 735         out << "    </state_list>\n";
 736 }
 737
 738 bool XMLCodeGen::writeNameInst( NameInst *nameInst )
 739 {
 740         bool written = false;
 741         if ( nameInst->parent != 0 )
 742                 written = writeNameInst( nameInst->parent );
 743
 744         if ( nameInst->name != 0 ) {
 745                 if ( written )
 746                         out << '_';
 747                 out << nameInst->name;
 748                 written = true;
 749         }
 750
 751         return written;
 752 }
 753
 754 void XMLCodeGen::writeEntryPoints()
 755 {
 756         /* List of entry points other than start state. */
 757         if ( fsm->entryPoints.length() > 0 || pd->lmRequiresErrorState ) {
 758                 out << "    <entry_points";
 759                 if ( pd->lmRequiresErrorState )
 760                         out << " error=\"t\"";
 761                 out << ">\n";
 762                 for ( EntryMap::Iter en = fsm->entryPoints; en.lte(); en++ ) {
 763                         /* Get the name instantiation from nameIndex. */
 764                         NameInst *nameInst = pd->nameIndex[en->key];
 765                         StateAp *state = en->value;
 766                         out << "      <entry name=\"";
 767                         writeNameInst( nameInst );
 768                         out << "\">" << state->alg.stateNum << "</entry>\n";
 769                 }
 770                 out << "    </entry_points>\n";
 771         }
 772 }
 773
 774 void XMLCodeGen::writeMachine()
 775 {
 776         /* Open the machine. */
 777         out << "  <machine>\n";
 778
 779         /* Action tables. */
 780         reduceActionTables();
 781
 782         writeActionList();
 783         writeActionTableList();
 784         writeConditions();
 785
 786         /* Start state. */
 787         out << "    <start_state>" << fsm->startState->alg.stateNum <<
 788                         "</start_state>\n";
 789
 790         /* Error state. */
 791         if ( fsm->errState != 0 ) {
 792                 out << "    <error_state>" << fsm->errState->alg.stateNum <<
 793                         "</error_state>\n";
 794         }
 795
 796         writeEntryPoints();
 797         writeStateList();
 798
 799         out << "  </machine>\n";
 800 }
 801
 802
 803 void XMLCodeGen::writeConditions()
 804 {
 805         if ( condData->condSpaceMap.length() > 0 ) {
 806                 long nextCondSpaceId = 0;
 807                 for ( CondSpaceMap::Iter cs = condData->condSpaceMap; cs.lte(); cs++ )
 808                         cs->condSpaceId = nextCondSpaceId++;
 809
 810                 out << "    <cond_space_list length=\"" << condData->condSpaceMap.length() << "\">\n";
 811                 for ( CondSpaceMap::Iter cs = condData->condSpaceMap; cs.lte(); cs++ ) {
 812                         out << "      <cond_space id=\"" << cs->condSpaceId <<
 813                                 "\" length=\"" << cs->condSet.length() << "\">";
 814                         writeKey( cs->baseKey );
 815                         for ( CondSet::Iter csi = cs->condSet; csi.lte(); csi++ )
 816                                 out << " " << (*csi)->actionId;
 817                         out << "</cond_space>\n";
 818                 }
 819                 out << "    </cond_space_list>\n";
 820         }
 821 }
 822
 823 void XMLCodeGen::writeExports()
 824 {
 825         if ( pd->exportList.length() > 0 ) {
 826                 out << "  <exports>\n";
 827                 for ( ExportList::Iter exp = pd->exportList; exp.lte(); exp++ ) {
 828                         out << "    <ex name=\"" << exp->name << "\">";
 829                         writeKey( exp->key );
 830                         out << "</ex>\n";
 831                 }
 832                 out << "  </exports>\n";
 833         }
 834 }
 835
 836 void XMLCodeGen::writeXML()
 837 {
 838         /* Open the definition. */
 839         out << "<ragel_def name=\"" << fsmName << "\">\n";
 840
 841         /* Alphabet type. */
 842         out << "  <alphtype>" << keyOps->alphType->internalName << "</alphtype>\n";
 843
 844         /* Getkey expression. */
 845         if ( pd->getKeyExpr != 0 ) {
 846                 out << "  <getkey>";
 847                 writeInlineList( pd->getKeyExpr );
 848                 out << "</getkey>\n";
 849         }
 850
 851         /* Access expression. */
 852         if ( pd->accessExpr != 0 ) {
 853                 out << "  <access>";
 854                 writeInlineList( pd->accessExpr );
 855                 out << "</access>\n";
 856         }
 857
 858         /* PrePush expression. */
 859         if ( pd->prePushExpr != 0 ) {
 860                 out << "  <prepush>";
 861                 writeInlineList( pd->prePushExpr );
 862                 out << "</prepush>\n";
 863         }
 864
 865         /* PostPop expression. */
 866         if ( pd->postPopExpr != 0 ) {
 867                 out << "  <postpop>";
 868                 writeInlineList( pd->postPopExpr );
 869                 out << "</postpop>\n";
 870         }
 871
 872         /*
 873          * Variable expressions.
 874          */
 875
 876         if ( pd->pExpr != 0 ) {
 877                 out << "  <p_expr>";
 878                 writeInlineList( pd->pExpr );
 879                 out << "</p_expr>\n";
 880         }
 881
 882         if ( pd->peExpr != 0 ) {
 883                 out << "  <pe_expr>";
 884                 writeInlineList( pd->peExpr );
 885                 out << "</pe_expr>\n";
 886         }
 887
 888         if ( pd->eofExpr != 0 ) {
 889                 out << "  <eof_expr>";
 890                 writeInlineList( pd->eofExpr );
 891                 out << "</eof_expr>\n";
 892         }
 893
 894         if ( pd->csExpr != 0 ) {
 895                 out << "  <cs_expr>";
 896                 writeInlineList( pd->csExpr );
 897                 out << "</cs_expr>\n";
 898         }
 899
 900         if ( pd->topExpr != 0 ) {
 901                 out << "  <top_expr>";
 902                 writeInlineList( pd->topExpr );
 903                 out << "</top_expr>\n";
 904         }
 905
 906         if ( pd->stackExpr != 0 ) {
 907                 out << "  <stack_expr>";
 908                 writeInlineList( pd->stackExpr );
 909                 out << "</stack_expr>\n";
 910         }
 911
 912         if ( pd->actExpr != 0 ) {
 913                 out << "  <act_expr>";
 914                 writeInlineList( pd->actExpr );
 915                 out << "</act_expr>\n";
 916         }
 917
 918         if ( pd->tokstartExpr != 0 ) {
 919                 out << "  <tokstart_expr>";
 920                 writeInlineList( pd->tokstartExpr );
 921                 out << "</tokstart_expr>\n";
 922         }
 923
 924         if ( pd->tokendExpr != 0 ) {
 925                 out << "  <tokend_expr>";
 926                 writeInlineList( pd->tokendExpr );
 927                 out << "</tokend_expr>\n";
 928         }
 929
 930         if ( pd->dataExpr != 0 ) {
 931                 out << "  <data_expr>";
 932                 writeInlineList( pd->dataExpr );
 933                 out << "</data_expr>\n";
 934         }
 935
 936         writeExports();
 937
 938         writeMachine();
 939
 940         out <<
 941                 "</ragel_def>\n";
 942 }
 943
 944 void XMLCodeGen::makeBackend()
 945 {
 946         /* Open the definition. */
 947         xmlParser.open_ragel_def( fsmName );
 948
 949         /* Alphabet type. */
 950         xmlParser.cgd->setAlphType( keyOps->alphType->internalName );
 951
 952         /* Getkey expression. */
 953         if ( pd->getKeyExpr != 0 ) {
 954                 out << "  <getkey>";
 955                 writeInlineList( pd->getKeyExpr );
 956                 out << "</getkey>\n";
 957         }
 958
 959         /* Access expression. */
 960         if ( pd->accessExpr != 0 ) {
 961                 out << "  <access>";
 962                 writeInlineList( pd->accessExpr );
 963                 out << "</access>\n";
 964         }
 965
 966         /* PrePush expression. */
 967         if ( pd->prePushExpr != 0 ) {
 968                 out << "  <prepush>";
 969                 writeInlineList( pd->prePushExpr );
 970                 out << "</prepush>\n";
 971         }
 972
 973         /* PostPop expression. */
 974         if ( pd->postPopExpr != 0 ) {
 975                 out << "  <postpop>";
 976                 writeInlineList( pd->postPopExpr );
 977                 out << "</postpop>\n";
 978         }
 979
 980         /*
 981          * Variable expressions.
 982          */
 983
 984         if ( pd->pExpr != 0 ) {
 985                 out << "  <p_expr>";
 986                 writeInlineList( pd->pExpr );
 987                 out << "</p_expr>\n";
 988         }
 989
 990         if ( pd->peExpr != 0 ) {
 991                 out << "  <pe_expr>";
 992                 writeInlineList( pd->peExpr );
 993                 out << "</pe_expr>\n";
 994         }
 995
 996         if ( pd->eofExpr != 0 ) {
 997                 out << "  <eof_expr>";
 998                 writeInlineList( pd->eofExpr );
 999                 out << "</eof_expr>\n";
1000         }
1001
1002         if ( pd->csExpr != 0 ) {
1003                 out << "  <cs_expr>";
1004                 writeInlineList( pd->csExpr );
1005                 out << "</cs_expr>\n";
1006         }
1007
1008         if ( pd->topExpr != 0 ) {
1009                 out << "  <top_expr>";
1010                 writeInlineList( pd->topExpr );
1011                 out << "</top_expr>\n";
1012         }
1013
1014         if ( pd->stackExpr != 0 ) {
1015                 out << "  <stack_expr>";
1016                 writeInlineList( pd->stackExpr );
1017                 out << "</stack_expr>\n";
1018         }
1019
1020         if ( pd->actExpr != 0 ) {
1021                 out << "  <act_expr>";
1022                 writeInlineList( pd->actExpr );
1023                 out << "</act_expr>\n";
1024         }
1025
1026         if ( pd->tokstartExpr != 0 ) {
1027                 out << "  <tokstart_expr>";
1028                 writeInlineList( pd->tokstartExpr );
1029                 out << "</tokstart_expr>\n";
1030         }
1031
1032         if ( pd->tokendExpr != 0 ) {
1033                 out << "  <tokend_expr>";
1034                 writeInlineList( pd->tokendExpr );
1035                 out << "</tokend_expr>\n";
1036         }
1037
1038         if ( pd->dataExpr != 0 ) {
1039                 out << "  <data_expr>";
1040                 writeInlineList( pd->dataExpr );
1041                 out << "</data_expr>\n";
1042         }
1043
1044         writeExports();
1045
1046         writeMachine();
1047
1048         out <<
1049                 "</ragel_def>\n";
1050 }
1051
1052