Repair/RepairCompiler/MCC/IR/RepairGenerator.java

   1 package MCC.IR;
   2
   3 import java.io.*;
   4 import java.util.*;
   5 import MCC.State;
   6 import MCC.Compiler;
   7
   8 public class RepairGenerator {
   9     State state;
  10     java.io.PrintWriter outputrepair = null;
  11     java.io.PrintWriter outputaux = null;
  12     java.io.PrintWriter outputhead = null;
  13     String name="foo";
  14     String headername;
  15     static VarDescriptor oldmodel=null;
  16     static VarDescriptor newmodel=null;
  17     static VarDescriptor worklist=null;
  18     static VarDescriptor repairtable=null;
  19     static VarDescriptor goodflag=null;
  20     Rule currentrule=null;
  21     Hashtable updatenames;
  22     HashSet usedupdates;
  23     Termination termination;
  24     Set removed;
  25     HashSet togenerate;
  26     static boolean DEBUG=false;
  27     Cost cost;
  28     ModelRuleDependence mrd;
  29
  30     public RepairGenerator(State state, Termination t) {
  31         this.state = state;
  32         updatenames=new Hashtable();
  33         usedupdates=new HashSet();
  34         termination=t;
  35         removed=t.removedset;
  36         togenerate=new HashSet();
  37         togenerate.addAll(termination.conjunctions);
  38         if (Compiler.REPAIR)
  39             togenerate.removeAll(removed);
  40         GraphNode.computeclosure(togenerate,removed);
  41         cost=new Cost();
  42         mrd=ModelRuleDependence.doAnalysis(state);
  43         Repair.repairgenerator=this;
  44     }
  45
  46     private void generatetypechecks(boolean flag) {
  47         if (flag) {
  48             DotExpr.DOTYPECHECKS=true;
  49             VarExpr.DOTYPECHECKS=true;
  50             DotExpr.DONULL=true;
  51             VarExpr.DONULL=true;
  52         } else {
  53             VarExpr.DOTYPECHECKS=false;
  54             DotExpr.DOTYPECHECKS=false;
  55             VarExpr.DONULL=true;
  56             DotExpr.DONULL=true;
  57         }
  58     }
  59
  60
  61     private void name_updates() {
  62         int count=0;
  63         for(Iterator it=termination.updatenodes.iterator();it.hasNext();) {
  64             GraphNode gn=(GraphNode) it.next();
  65             TermNode tn=(TermNode) gn.getOwner();
  66             MultUpdateNode mun=tn.getUpdate();
  67             if (togenerate.contains(gn))
  68             for (int i=0;i<mun.numUpdates();i++) {
  69                 UpdateNode un=mun.getUpdate(i);
  70                 String name="update"+String.valueOf(count++);
  71                 updatenames.put(un,name);
  72             }
  73         }
  74     }
  75
  76     public void generate(OutputStream outputrepair, OutputStream outputaux,OutputStream outputhead, String st) {
  77         this.outputrepair = new java.io.PrintWriter(outputrepair, true);
  78         this.outputaux = new java.io.PrintWriter(outputaux, true);
  79         this.outputhead = new java.io.PrintWriter(outputhead, true);
  80         headername=st;
  81         name_updates();
  82         generatetypechecks(true);
  83         generate_tokentable();
  84         generate_hashtables();
  85         generate_stateobject();
  86         generate_call();
  87         generate_start();
  88         generate_rules();
  89         if (!Compiler.REPAIR||Compiler.GENERATEDEBUGPRINT) {
  90             generate_print();
  91         }
  92         generate_checks();
  93         generate_teardown();
  94         CodeWriter crhead = new StandardCodeWriter(this.outputhead);
  95         CodeWriter craux = new StandardCodeWriter(this.outputaux);
  96         crhead.outputline("};");
  97         craux.outputline("}");
  98
  99         if (Compiler.GENERATEDEBUGHOOKS) {
 100             crhead.outputline("void debughook();");
 101             craux.outputline("void debughook() {}");
 102         }
 103         generatetypechecks(false);
 104         generate_computesizes();
 105         generatetypechecks(true);
 106         generate_recomputesizes();
 107         generatetypechecks(false);
 108         generate_updates();
 109         StructureGenerator sg=new StructureGenerator(state,this);
 110         sg.buildall();
 111         crhead.outputline("#endif");
 112     }
 113
 114     String ststate="state";
 115     String stmodel="model";
 116     String strepairtable="repairtable";
 117     String stleft="left";
 118     String stright="right";
 119     String stnew="newvalue";
 120
 121     private void generate_updates() {
 122         int count=0;
 123         CodeWriter crhead = new StandardCodeWriter(outputhead);
 124         CodeWriter craux = new StandardCodeWriter(outputaux);
 125         RelationDescriptor.prefix = "model->";
 126         SetDescriptor.prefix = "model->";
 127
 128         /* Rewrite globals */
 129
 130         for (Iterator it=this.state.stGlobals.descriptors();it.hasNext();) {
 131             VarDescriptor vd=(VarDescriptor)it.next();
 132             craux.outputline("#define "+vd.getSafeSymbol()+" "+ststate+"->"+vd.getSafeSymbol());
 133         }
 134
 135         for(Iterator it=termination.updatenodes.iterator();it.hasNext();) {
 136             GraphNode gn=(GraphNode) it.next();
 137             TermNode tn=(TermNode) gn.getOwner();
 138             MultUpdateNode mun=tn.getUpdate();
 139             boolean isrelation=(mun.getDescriptor() instanceof RelationDescriptor);
 140             if (togenerate.contains(gn))
 141             for (int i=0;i<mun.numUpdates();i++) {
 142                 UpdateNode un=mun.getUpdate(i);
 143                 String methodname=(String)updatenames.get(un);
 144
 145                 switch(mun.op) {
 146                 case MultUpdateNode.ADD:
 147                     if (isrelation) {
 148                         crhead.outputline("void "+methodname+"("+name+"_state * " +ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable+", int "+stleft+", int "+stright+");");
 149                         craux.outputline("void "+methodname+"("+name+"_state * "+ ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable+", int "+stleft+", int "+stright+")");
 150                     } else {
 151                         crhead.outputline("void "+methodname+"("+name+"_state * "+ ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable+", int "+stleft+");");
 152                         craux.outputline("void "+methodname+"("+name+"_state * "+ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable+", int "+stleft+")");
 153                     }
 154                     craux.startblock();
 155                     craux.outputline("int maybe=0;");
 156                     if (Compiler.GENERATEINSTRUMENT)
 157                         craux.outputline("updatecount++;");
 158
 159                     final SymbolTable st = un.getRule().getSymbolTable();
 160                     CodeWriter cr = new StandardCodeWriter(outputaux) {
 161                         public SymbolTable getSymbolTable() { return st; }
 162                     };
 163                     un.generate(cr, false, false, stleft,stright, null,this);
 164                     craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 165                     craux.endblock();
 166                     break;
 167                 case MultUpdateNode.REMOVE: {
 168                     Rule r=un.getRule();
 169                     String methodcall="void "+methodname+"("+name+"_state * "+ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable;
 170                     for(int j=0;j<r.numQuantifiers();j++) {
 171                         Quantifier q=r.getQuantifier(j);
 172                         if (q instanceof SetQuantifier) {
 173                             SetQuantifier sq=(SetQuantifier) q;
 174                             methodcall+=","+sq.getVar().getType().getGenerateType().getSafeSymbol()+" "+sq.getVar().getSafeSymbol();
 175                         } else if (q instanceof RelationQuantifier) {
 176                             RelationQuantifier rq=(RelationQuantifier) q;
 177
 178                             methodcall+=","+rq.x.getType().getGenerateType().getSafeSymbol()+" "+rq.x.getSafeSymbol();
 179                             methodcall+=","+rq.y.getType().getGenerateType().getSafeSymbol()+" "+rq.y.getSafeSymbol();
 180                         } else if (q instanceof ForQuantifier) {
 181                             ForQuantifier fq=(ForQuantifier) q;
 182                             methodcall+=",int "+fq.getVar().getSafeSymbol();
 183                         }
 184                     }
 185                     methodcall+=")";
 186                     crhead.outputline(methodcall+";");
 187                     craux.outputline(methodcall);
 188                     craux.startblock();
 189                     craux.outputline("int maybe=0;");
 190                     if (Compiler.GENERATEINSTRUMENT)
 191                         craux.outputline("updatecount++;");
 192                     final SymbolTable st2 = un.getRule().getSymbolTable();
 193                     CodeWriter cr2 = new StandardCodeWriter(outputaux) {
 194                         public SymbolTable getSymbolTable() { return st2; }
 195                     };
 196                     un.generate(cr2, true, false, null,null, null,this);
 197                     craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 198                     craux.endblock();
 199                 }
 200                     break;
 201                 case MultUpdateNode.MODIFY: {
 202                     Rule r=un.getRule();
 203                     String methodcall="void "+methodname+"("+name+"_state * "+ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable;
 204                     for(int j=0;j<r.numQuantifiers();j++) {
 205                         Quantifier q=r.getQuantifier(j);
 206                         if (q instanceof SetQuantifier) {
 207                             SetQuantifier sq=(SetQuantifier) q;
 208                             methodcall+=","+sq.getVar().getType().getGenerateType().getSafeSymbol()+" "+sq.getVar().getSafeSymbol();
 209                         } else if (q instanceof RelationQuantifier) {
 210                             RelationQuantifier rq=(RelationQuantifier) q;
 211
 212                             methodcall+=", "+rq.x.getType().getGenerateType().getSafeSymbol()+" "+rq.x.getSafeSymbol();
 213                             methodcall+=", "+rq.y.getType().getGenerateType().getSafeSymbol()+" "+rq.y.getSafeSymbol();
 214                         } else if (q instanceof ForQuantifier) {
 215                             ForQuantifier fq=(ForQuantifier) q;
 216                             methodcall+=", int "+fq.getVar().getSafeSymbol();
 217                         }
 218                     }
 219                     methodcall+=", int "+stleft+", int "+stright+", int "+stnew;
 220                     methodcall+=")";
 221                     crhead.outputline(methodcall+";");
 222                     craux.outputline(methodcall);
 223                     craux.startblock();
 224                     craux.outputline("int maybe=0;");
 225                     if (Compiler.GENERATEINSTRUMENT)
 226                         craux.outputline("updatecount++;");
 227                     final SymbolTable st2 = un.getRule().getSymbolTable();
 228                     CodeWriter cr2 = new StandardCodeWriter(outputaux) {
 229                         public SymbolTable getSymbolTable() { return st2; }
 230                     };
 231                     un.generate(cr2, false, true, stleft, stright, stnew, this);
 232                     craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 233                     craux.endblock();
 234                 }
 235                     break;
 236
 237                 default:
 238                     throw new Error("Nonimplement Update");
 239                 }
 240             }
 241         }
 242     }
 243
 244     private void generate_call() {
 245         CodeWriter cr = new StandardCodeWriter(outputrepair);
 246         VarDescriptor vdstate=VarDescriptor.makeNew("repairstate");
 247         cr.outputline(name+"_state * "+vdstate.getSafeSymbol()+"=new "+name+"_state();");
 248         Iterator globals=state.stGlobals.descriptors();
 249         while (globals.hasNext()) {
 250             VarDescriptor vd=(VarDescriptor) globals.next();
 251             cr.outputline(vdstate.getSafeSymbol()+"->"+vd.getSafeSymbol()+"=("+vd.getType().getGenerateType().getSafeSymbol()+")"+vd.getSafeSymbol()+";");
 252         }
 253         /* Insert repair here */
 254         cr.outputline(vdstate.getSafeSymbol()+"->doanalysis();");
 255         globals=state.stGlobals.descriptors();
 256         while (globals.hasNext()) {
 257             VarDescriptor vd=(VarDescriptor) globals.next();
 258             cr.outputline("*(("+vd.getType().getGenerateType().getSafeSymbol()+"*) &"+vd.getSafeSymbol()+")="+vdstate.getSafeSymbol()+"->"+vd.getSafeSymbol()+";");
 259         }
 260         cr.outputline("delete "+vdstate.getSafeSymbol()+";");
 261     }
 262
 263     private void generate_tokentable() {
 264         CodeWriter cr = new StandardCodeWriter(outputrepair);
 265         Iterator tokens = TokenLiteralExpr.tokens.keySet().iterator();
 266
 267         cr.outputline("");
 268         cr.outputline("// Token values");
 269         cr.outputline("");
 270
 271         while (tokens.hasNext()) {
 272             Object token = tokens.next();
 273             cr.outputline("// " + token.toString() + " = " + TokenLiteralExpr.tokens.get(token).toString());
 274         }
 275
 276         cr.outputline("");
 277         cr.outputline("");
 278     }
 279
 280     private void generate_stateobject() {
 281         CodeWriter crhead = new StandardCodeWriter(outputhead);
 282         crhead.outputline("class "+name+"_state {");
 283         crhead.outputline("public:");
 284         Iterator globals=state.stGlobals.descriptors();
 285         while (globals.hasNext()) {
 286             VarDescriptor vd=(VarDescriptor) globals.next();
 287             crhead.outputline(vd.getType().getGenerateType().getSafeSymbol()+" "+vd.getSafeSymbol()+";");
 288         }
 289         crhead.outputline("void computesizes(int *,int **);");
 290         crhead.outputline("void recomputesizes();");
 291     }
 292
 293     private void generate_computesizes() {
 294         int max=TypeDescriptor.counter;
 295         TypeDescriptor[] tdarray=new TypeDescriptor[max];
 296         for(Iterator it=state.stTypes.descriptors();it.hasNext();) {
 297             TypeDescriptor ttd=(TypeDescriptor)it.next();
 298             tdarray[ttd.getId()]=ttd;
 299         }
 300         final SymbolTable st = state.stGlobals;
 301         CodeWriter cr = new StandardCodeWriter(outputaux) {
 302                 public SymbolTable getSymbolTable() { return st; }
 303             };
 304
 305         cr.outputline("void "+name+"_state::computesizes(int *sizearray,int **numele) {");
 306         cr.outputline("int maybe=0;");
 307         for(int i=0;i<max;i++) {
 308             TypeDescriptor td=tdarray[i];
 309             Expr size=td.getSizeExpr();
 310             VarDescriptor vd=VarDescriptor.makeNew("size");
 311             size.generate(cr,vd);
 312             cr.outputline("sizearray["+i+"]="+vd.getSafeSymbol()+";");
 313         }
 314         for(int i=0;i<max;i++) {
 315             TypeDescriptor td=tdarray[i];
 316             if (td instanceof StructureTypeDescriptor) {
 317                 StructureTypeDescriptor std=(StructureTypeDescriptor) td;
 318                 for(int j=0;j<std.fieldlist.size();j++) {
 319                     FieldDescriptor fd=(FieldDescriptor)std.fieldlist.get(j);
 320                     if (fd instanceof ArrayDescriptor) {
 321                         ArrayDescriptor ad=(ArrayDescriptor)fd;
 322                         Expr index=ad.getIndexBound();
 323                         VarDescriptor vd=VarDescriptor.makeNew("index");
 324                         index.generate(cr,vd);
 325                         cr.outputline("numele["+i+"]["+j+"]="+vd.getSafeSymbol()+";");
 326                     }
 327                 }
 328             }
 329         }
 330         cr.outputline("if (maybe) printf(\"BAD ERROR\");");
 331         cr.outputline("}");
 332     }
 333
 334     private void generate_recomputesizes() {
 335         int max=TypeDescriptor.counter;
 336         TypeDescriptor[] tdarray=new TypeDescriptor[max];
 337         for(Iterator it=state.stTypes.descriptors();it.hasNext();) {
 338             TypeDescriptor ttd=(TypeDescriptor)it.next();
 339             tdarray[ttd.getId()]=ttd;
 340         }
 341         final SymbolTable st = state.stGlobals;
 342         CodeWriter cr = new StandardCodeWriter(outputaux) {
 343                 public SymbolTable getSymbolTable() { return st; }
 344             };
 345         cr.outputline("void "+name+"_state::recomputesizes() {");
 346         cr.outputline("int maybe=0;");
 347         for(int i=0;i<max;i++) {
 348             TypeDescriptor td=tdarray[i];
 349             Expr size=td.getSizeExpr();
 350             VarDescriptor vd=VarDescriptor.makeNew("size");
 351             size.generate(cr,vd);
 352         }
 353         for(int i=0;i<max;i++) {
 354             TypeDescriptor td=tdarray[i];
 355             if (td instanceof StructureTypeDescriptor) {
 356                 StructureTypeDescriptor std=(StructureTypeDescriptor) td;
 357                 for(int j=0;j<std.fieldlist.size();j++) {
 358                     FieldDescriptor fd=(FieldDescriptor)std.fieldlist.get(j);
 359                     if (fd instanceof ArrayDescriptor) {
 360                         ArrayDescriptor ad=(ArrayDescriptor)fd;
 361                         Expr index=ad.getIndexBound();
 362                         VarDescriptor vd=VarDescriptor.makeNew("index");
 363                         index.generate(cr,vd);
 364                     }
 365                 }
 366             }
 367         }
 368         cr.outputline("if (maybe) printf(\"BAD ERROR\");");
 369         cr.outputline("}");
 370     }
 371
 372
 373     private void generate_hashtables() {
 374         CodeWriter craux = new StandardCodeWriter(outputaux);
 375         CodeWriter crhead = new StandardCodeWriter(outputhead);
 376         crhead.outputline("#ifndef "+name+"_h");
 377         crhead.outputline("#define "+name+"_h");
 378         crhead.outputline("#include \"SimpleHash.h\"");
 379         crhead.outputline("extern \"C\" {");
 380         crhead.outputline("#include \"instrument.h\"");
 381         crhead.outputline("}");
 382         crhead.outputline("#include <stdio.h>");
 383         crhead.outputline("#include <stdlib.h>");
 384         crhead.outputline("class "+name+" {");
 385         crhead.outputline("public:");
 386         crhead.outputline(name+"();");
 387         crhead.outputline("~"+name+"();");
 388         craux.outputline("#include \""+headername+"\"");
 389         craux.outputline("#include \"size.h\"");
 390
 391         craux.outputline(name+"::"+name+"() {");
 392         craux.outputline("// creating hashtables ");
 393
 394         /* build sets */
 395         Iterator sets = state.stSets.descriptors();
 396
 397         /* first pass create all the hash tables */
 398         while (sets.hasNext()) {
 399             SetDescriptor set = (SetDescriptor) sets.next();
 400             crhead.outputline("SimpleHash* " + set.getSafeSymbol() + "_hash;");
 401             craux.outputline(set.getSafeSymbol() + "_hash = new SimpleHash();");
 402         }
 403
 404         /* second pass build relationships between hashtables */
 405         sets = state.stSets.descriptors();
 406
 407         while (sets.hasNext()) {
 408             SetDescriptor set = (SetDescriptor) sets.next();
 409             Iterator subsets = set.subsets();
 410
 411             while (subsets.hasNext()) {
 412                 SetDescriptor subset = (SetDescriptor) subsets.next();
 413                 craux.outputline(subset.getSafeSymbol() + "_hash->addParent(" + set.getSafeSymbol() + "_hash);");
 414             }
 415         }
 416
 417         /* build relations */
 418         Iterator relations = state.stRelations.descriptors();
 419
 420         /* first pass create all the hash tables */
 421         while (relations.hasNext()) {
 422             RelationDescriptor relation = (RelationDescriptor) relations.next();
 423
 424             if (relation.testUsage(RelationDescriptor.IMAGE)) {
 425                 crhead.outputline("SimpleHash* " + relation.getSafeSymbol() + "_hash;");
 426                 craux.outputline(relation.getSafeSymbol() + "_hash = new SimpleHash();");
 427             }
 428
 429             if (relation.testUsage(RelationDescriptor.INVIMAGE)) {
 430                 crhead.outputline("SimpleHash* " + relation.getSafeSymbol() + "_hashinv;");
 431                 craux.outputline(relation.getSafeSymbol() + "_hashinv = new SimpleHash();");
 432             }
 433         }
 434
 435         craux.outputline("}");
 436         crhead.outputline("};");
 437         craux.outputline(name+"::~"+name+"() {");
 438         craux.outputline("// deleting hashtables");
 439
 440         /* build destructor */
 441         sets = state.stSets.descriptors();
 442
 443         /* first pass create all the hash tables */
 444         while (sets.hasNext()) {
 445             SetDescriptor set = (SetDescriptor) sets.next();
 446             craux.outputline("delete "+set.getSafeSymbol() + "_hash;");
 447         }
 448
 449         /* destroy relations */
 450         relations = state.stRelations.descriptors();
 451
 452         /* first pass create all the hash tables */
 453         while (relations.hasNext()) {
 454             RelationDescriptor relation = (RelationDescriptor) relations.next();
 455
 456             if (relation.testUsage(RelationDescriptor.IMAGE)) {
 457                 craux.outputline("delete "+relation.getSafeSymbol() + "_hash;");
 458             }
 459
 460             if (relation.testUsage(RelationDescriptor.INVIMAGE)) {
 461                 craux.outputline("delete " + relation.getSafeSymbol() + "_hashinv;");
 462             }
 463         }
 464         craux.outputline("}");
 465     }
 466
 467     private void generate_start() {
 468         CodeWriter crhead = new StandardCodeWriter(outputhead);
 469         CodeWriter craux = new StandardCodeWriter(outputaux);
 470         oldmodel=VarDescriptor.makeNew("oldmodel");
 471         newmodel=VarDescriptor.makeNew("newmodel");
 472         worklist=VarDescriptor.makeNew("worklist");
 473         goodflag=VarDescriptor.makeNew("goodflag");
 474         repairtable=VarDescriptor.makeNew("repairtable");
 475
 476         if (Compiler.GENERATEINSTRUMENT) {
 477             craux.outputline("int updatecount;");
 478             craux.outputline("int rebuildcount;");
 479             craux.outputline("int abstractcount;");
 480         }
 481
 482         crhead.outputline("void doanalysis();");
 483         craux.outputline("void "+name +"_state::doanalysis()");
 484         craux.startblock();
 485         if (Compiler.GENERATEINSTRUMENT) {
 486             craux.outputline("updatecount=0;");
 487             craux.outputline("rebuildcount=0;");
 488             craux.outputline("abstractcount=0;");
 489         }
 490         craux.outputline("int highmark;");
 491         craux.outputline("initializestack(&highmark);");
 492         craux.outputline("typeobject *typeobject1=gettypeobject();");
 493         craux.outputline("typeobject1->computesizes(this);");
 494         craux.outputline("recomputesizes();");
 495         craux.outputline(name+ " * "+oldmodel.getSafeSymbol()+"=0;");
 496         craux.outputline("WorkList * "+worklist.getSafeSymbol()+" = new WorkList();");
 497         craux.outputline("RepairHash * "+repairtable.getSafeSymbol()+"=0;");
 498         craux.outputline("while (1)");
 499         craux.startblock();
 500         craux.outputline(name+ " * "+newmodel.getSafeSymbol()+"=new "+name+"();");
 501         craux.outputline(worklist.getSafeSymbol()+"->reset();");
 502         if (Compiler.GENERATEINSTRUMENT)
 503             craux.outputline("rebuildcount++;");
 504     }
 505
 506     private void generate_teardown() {
 507         CodeWriter cr = new StandardCodeWriter(outputaux);
 508         cr.endblock();
 509         if (Compiler.GENERATEINSTRUMENT) {
 510             cr.outputline("printf(\"updatecount=%d\\n\",updatecount);");
 511             cr.outputline("printf(\"rebuildcount=%d\\n\",rebuildcount);");
 512             cr.outputline("printf(\"abstractcount=%d\\n\",abstractcount);");
 513         }
 514
 515     }
 516
 517     private void generate_print() {
 518
 519         final SymbolTable st = new SymbolTable();
 520
 521         CodeWriter cr = new StandardCodeWriter(outputaux) {
 522                 public SymbolTable getSymbolTable() { return st; }
 523             };
 524
 525         cr.outputline("// printing sets!");
 526         cr.outputline("printf(\"\\n\\nPRINTING SETS AND RELATIONS\\n\");");
 527
 528         Iterator setiterator = state.stSets.descriptors();
 529         while (setiterator.hasNext()) {
 530             SetDescriptor sd = (SetDescriptor) setiterator.next();
 531             if (sd.getSymbol().equals("int") || sd.getSymbol().equals("token")) {
 532                 continue;
 533             }
 534
 535             String setname = sd.getSafeSymbol();
 536
 537             cr.startblock();
 538             cr.outputline("// printing set " + setname);
 539             cr.outputline("printf(\"\\nPrinting set " + sd.getSymbol() + " - %d elements \\n\", " + setname + "_hash->count());");
 540             cr.outputline("SimpleIterator __setiterator;");
 541             cr.outputline("" + setname + "_hash->iterator(__setiterator);");
 542             cr.outputline("while (__setiterator.hasNext())");
 543             cr.startblock();
 544             cr.outputline("int __setval = (int) __setiterator.next();");
 545
 546             TypeDescriptor td = sd.getType();
 547             if (td instanceof StructureTypeDescriptor) {
 548                 StructureTypeDescriptor std = (StructureTypeDescriptor) td;
 549                 VarDescriptor vd = new VarDescriptor ("__setval", "__setval", td, false);
 550                 std.generate_printout(cr, vd);
 551             } else { // Missing type descriptor or reserved type, just print int
 552                 cr.outputline("printf(\"<%d> \", __setval);");
 553             }
 554
 555
 556             cr.endblock();
 557             cr.endblock();
 558         }
 559
 560         cr.outputline("printf(\"\\n\\n------------------- END PRINTING\\n\");");
 561     }
 562
 563     Set ruleset=null;
 564     private void generate_rules() {
 565         /* first we must sort the rules */
 566         RelationDescriptor.prefix = newmodel.getSafeSymbol()+"->";
 567         SetDescriptor.prefix = newmodel.getSafeSymbol()+"->";
 568         System.out.println("SCC="+(mrd.numSCC()-1));
 569         for(int sccindex=0;sccindex<mrd.numSCC();sccindex++) {
 570             ruleset=mrd.getSCC(sccindex);
 571             boolean needworklist=mrd.hasCycle(sccindex);
 572
 573             if (!needworklist) {
 574                 Iterator iterator_rs = ruleset.iterator();
 575                 while (iterator_rs.hasNext()) {
 576                     Rule rule = (Rule) iterator_rs.next();
 577                     if (rule.getnogenerate())
 578                         continue;
 579                     {
 580                         final SymbolTable st = rule.getSymbolTable();
 581                         CodeWriter cr = new StandardCodeWriter(outputaux) {
 582                                 public SymbolTable getSymbolTable() { return st; }
 583                             };
 584                         InvariantValue ivalue=new InvariantValue();
 585                         cr.setInvariantValue(ivalue);
 586
 587                         cr.outputline("// build " +escape(rule.toString()));
 588                         cr.startblock();
 589                         cr.outputline("int maybe=0;");
 590
 591                         Expr ruleexpr=rule.getGuardExpr();
 592                         HashSet invariantvars=new HashSet();
 593                         Set invariants=ruleexpr.findInvariants(invariantvars);
 594
 595                         if ((ruleexpr instanceof BooleanLiteralExpr)&&
 596                             ((BooleanLiteralExpr)ruleexpr).getValue()) {
 597                             if (rule.getInclusion() instanceof SetInclusion) {
 598                                 invariants.addAll(((SetInclusion)rule.getInclusion()).getExpr().findInvariants(invariantvars));
 599                             } else if (rule.getInclusion() instanceof RelationInclusion) {
 600                                 invariants.addAll(((RelationInclusion)rule.getInclusion()).getLeftExpr().findInvariants(invariantvars));
 601                                 invariants.addAll(((RelationInclusion)rule.getInclusion()).getRightExpr().findInvariants(invariantvars));
 602                             }
 603                         }
 604                         ListIterator quantifiers = rule.quantifiers();
 605                         while (quantifiers.hasNext()) {
 606                             Quantifier quantifier = (Quantifier) quantifiers.next();
 607                             if (quantifier instanceof ForQuantifier) {
 608                                 ForQuantifier fq=(ForQuantifier)quantifier;
 609                                 invariants.addAll(fq.lower.findInvariants(invariantvars));
 610                                 invariants.addAll(fq.upper.findInvariants(invariantvars));
 611                             }
 612                         }
 613
 614                         for(Iterator invit=invariants.iterator();invit.hasNext();) {
 615                             Expr invexpr=(Expr)invit.next();
 616                             VarDescriptor tmpvd=VarDescriptor.makeNew("tmpvar");
 617                             VarDescriptor maybevd=VarDescriptor.makeNew("maybevar");
 618                             invexpr.generate(cr,tmpvd);
 619                             cr.outputline("int "+maybevd.getSafeSymbol()+"=maybe;");
 620                             cr.outputline("maybe=0;");
 621                             ivalue.assignPair(invexpr,tmpvd,maybevd);
 622                         }
 623
 624                         quantifiers = rule.quantifiers();
 625                         while (quantifiers.hasNext()) {
 626                             Quantifier quantifier = (Quantifier) quantifiers.next();
 627                             quantifier.generate_open(cr);
 628                         }
 629
 630                         /* pretty print! */
 631                         cr.output("//");
 632                         rule.getGuardExpr().prettyPrint(cr);
 633                         cr.outputline("");
 634
 635                         /* now we have to generate the guard test */
 636                         VarDescriptor guardval = VarDescriptor.makeNew();
 637                         rule.getGuardExpr().generate(cr, guardval);
 638                         cr.outputline("if (" + guardval.getSafeSymbol() + ")");
 639                         cr.startblock();
 640
 641                         /* now we have to generate the inclusion code */
 642                         currentrule=rule;
 643                         rule.getInclusion().generate(cr);
 644                         cr.endblock();
 645                         while (quantifiers.hasPrevious()) {
 646                             Quantifier quantifier = (Quantifier) quantifiers.previous();
 647                             cr.endblock();
 648                         }
 649                         cr.endblock();
 650                         cr.outputline("");
 651                         cr.outputline("");
 652                     }
 653                 }
 654             } else {
 655                 CodeWriter cr2 = new StandardCodeWriter(outputaux);
 656
 657                 for(Iterator initialworklist=ruleset.iterator();initialworklist.hasNext();) {
 658                     /** Construct initial worklist set */
 659                     Rule rule=(Rule)initialworklist.next();
 660                     cr2.outputline(worklist.getSafeSymbol()+"->add("+rule.getNum()+",-1,0,0);");
 661                 }
 662
 663                 cr2.outputline("while ("+worklist.getSafeSymbol()+"->hasMoreElements())");
 664                 cr2.startblock();
 665                 VarDescriptor idvar=VarDescriptor.makeNew("id");
 666                 cr2.outputline("int "+idvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getid();");
 667
 668                 String elseladder = "if";
 669
 670                 Iterator iterator_rules = ruleset.iterator();
 671                 while (iterator_rules.hasNext()) {
 672
 673                     Rule rule = (Rule) iterator_rules.next();
 674                     int dispatchid = rule.getNum();
 675
 676                     {
 677                         final SymbolTable st = rule.getSymbolTable();
 678                         CodeWriter cr = new StandardCodeWriter(outputaux) {
 679                                 public SymbolTable getSymbolTable() { return st; }
 680                             };
 681
 682                         cr.indent();
 683                         cr.outputline(elseladder + " ("+idvar.getSafeSymbol()+" == " + dispatchid + ")");
 684                         cr.startblock();
 685                         cr.outputline("int maybe=0;");
 686                         VarDescriptor typevar=VarDescriptor.makeNew("type");
 687                         VarDescriptor leftvar=VarDescriptor.makeNew("left");
 688                         VarDescriptor rightvar=VarDescriptor.makeNew("right");
 689                         cr.outputline("int "+typevar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->gettype();");
 690                         cr.outputline("int "+leftvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getlvalue();");
 691                         cr.outputline("int "+rightvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getrvalue();");
 692                         cr.outputline("// build " +escape(rule.toString()));
 693
 694
 695                         for (int j=0;j<rule.numQuantifiers();j++) {
 696                             Quantifier quantifier = rule.getQuantifier(j);
 697                             quantifier.generate_open(cr, typevar.getSafeSymbol(),j,leftvar.getSafeSymbol(),rightvar.getSafeSymbol());
 698                         }
 699
 700                         /* pretty print! */
 701                         cr.output("//");
 702
 703                         rule.getGuardExpr().prettyPrint(cr);
 704                         cr.outputline("");
 705
 706                         /* now we have to generate the guard test */
 707
 708                         VarDescriptor guardval = VarDescriptor.makeNew();
 709                         rule.getGuardExpr().generate(cr, guardval);
 710
 711                         cr.outputline("if (" + guardval.getSafeSymbol() + ")");
 712                         cr.startblock();
 713
 714                         /* now we have to generate the inclusion code */
 715                         currentrule=rule;
 716                         rule.getInclusion().generate(cr);
 717                         cr.endblock();
 718
 719                         for (int j=0;j<rule.numQuantifiers();j++) {
 720                             cr.endblock();
 721                         }
 722
 723                         // close startblocks generated by DotExpr memory checks
 724                         //DotExpr.generate_memory_endblocks(cr);
 725
 726                         cr.endblock(); // end else-if WORKLIST ladder
 727
 728                         elseladder = "else if";
 729                     }
 730                 }
 731                 cr2.outputline("else");
 732                 cr2.startblock();
 733                 cr2.outputline("printf(\"VERY BAD !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\\n\\n\");");
 734                 cr2.outputline("exit(1);");
 735                 cr2.endblock();
 736                 // end block created for worklist
 737                 cr2.outputline(worklist.getSafeSymbol()+"->pop();");
 738                 cr2.endblock();
 739             }
 740         }
 741     }
 742
 743     public static String escape(String s) {
 744         String newstring="";
 745         for(int i=0;i<s.length();i++) {
 746             char c=s.charAt(i);
 747             if (c=='"')
 748                 newstring+="\"";
 749             else
 750                 newstring+=c;
 751         }
 752         return newstring;
 753     }
 754
 755     private void generate_checks() {
 756         /* do constraint checks */
 757         Iterator i;
 758         if (Compiler.REPAIR)
 759             i=termination.constraintdependence.computeOrdering().iterator();
 760         else
 761             i=state.vConstraints.iterator();
 762         for (; i.hasNext();) {
 763             Constraint constraint;
 764             if (Compiler.REPAIR)
 765                 constraint= (Constraint) ((GraphNode)i.next()).getOwner();
 766             else
 767                 constraint=(Constraint)i.next();
 768
 769             {
 770                 final SymbolTable st = constraint.getSymbolTable();
 771                 CodeWriter cr = new StandardCodeWriter(outputaux);
 772                 cr.pushSymbolTable(constraint.getSymbolTable());
 773
 774                 cr.outputline("// checking " + escape(constraint.toString()));
 775                 cr.startblock();
 776
 777                 ListIterator quantifiers = constraint.quantifiers();
 778
 779                 while (quantifiers.hasNext()) {
 780                     Quantifier quantifier = (Quantifier) quantifiers.next();
 781                     quantifier.generate_open(cr);
 782                 }
 783
 784                 cr.outputline("int maybe = 0;");
 785
 786                 /* now we have to generate the guard test */
 787
 788                 VarDescriptor constraintboolean = VarDescriptor.makeNew("constraintboolean");
 789                 constraint.getLogicStatement().generate(cr, constraintboolean);
 790
 791                 cr.outputline("if (maybe)");
 792                 cr.startblock();
 793                 cr.outputline("printf(\"maybe fail " +  escape(constraint.toString()) + ". \\n\");");
 794                 cr.outputline("exit(1);");
 795                 cr.endblock();
 796
 797                 cr.outputline("else if (!" + constraintboolean.getSafeSymbol() + ")");
 798                 cr.startblock();
 799                 if (!Compiler.REPAIR||Compiler.GENERATEDEBUGHOOKS)
 800                     cr.outputline("printf(\"fail " + escape(constraint.toString()) + ". \\n\");");
 801
 802                 if (Compiler.REPAIR) {
 803                 /* Do repairs */
 804                 /* Build new repair table */
 805                 cr.outputline("if ("+repairtable.getSafeSymbol()+")");
 806                 cr.outputline("delete "+repairtable.getSafeSymbol()+";");
 807                 cr.outputline(repairtable.getSafeSymbol()+"=new RepairHash();");
 808
 809                 if (Compiler.GENERATEDEBUGHOOKS)
 810                     cr.outputline("debughook();");
 811                 /* Compute cost of each repair */
 812                 VarDescriptor mincost=VarDescriptor.makeNew("mincost");
 813                 VarDescriptor mincostindex=VarDescriptor.makeNew("mincostindex");
 814                 Vector dnfconst=new Vector();
 815                 dnfconst.addAll((Set)termination.conjunctionmap.get(constraint));
 816
 817                 if (dnfconst.size()<=1) {
 818                     cr.outputline("int "+mincostindex.getSafeSymbol()+"=0;");
 819                 }
 820                 if (dnfconst.size()>1) {
 821                     cr.outputline("int "+mincostindex.getSafeSymbol()+";");
 822                     boolean first=true;
 823                     for(int j=0;j<dnfconst.size();j++) {
 824                         GraphNode gn=(GraphNode)dnfconst.get(j);
 825                         Conjunction conj=((TermNode)gn.getOwner()).getConjunction();
 826                         if (removed.contains(gn))
 827                             continue;
 828
 829                         VarDescriptor costvar;
 830                         if (first) {
 831                             costvar=mincost;
 832                         } else
 833                             costvar=VarDescriptor.makeNew("cost");
 834                         for(int k=0;k<conj.size();k++) {
 835                             DNFPredicate dpred=conj.get(k);
 836                             Predicate p=dpred.getPredicate();
 837                             boolean negate=dpred.isNegated();
 838                             VarDescriptor predvalue=VarDescriptor.makeNew("Predicatevalue");
 839                             p.generate(cr,predvalue);
 840                             if (k==0)
 841                                 cr.outputline("int "+costvar.getSafeSymbol()+"=0;");
 842
 843                             if (negate)
 844                                 cr.outputline("if (maybe||"+predvalue.getSafeSymbol()+")");
 845                             else
 846                                 cr.outputline("if (maybe||!"+predvalue.getSafeSymbol()+")");
 847                             cr.outputline(costvar.getSafeSymbol()+"+="+cost.getCost(dpred)+";");
 848                         }
 849
 850                         if(!first) {
 851                             cr.outputline("if ("+costvar.getSafeSymbol()+"<"+mincost.getSafeSymbol()+")");
 852                             cr.startblock();
 853                             cr.outputline(mincost.getSafeSymbol()+"="+costvar.getSafeSymbol()+";");
 854                             cr.outputline(mincostindex.getSafeSymbol()+"="+j+";");
 855                             cr.endblock();
 856                         } else
 857                             cr.outputline(mincostindex.getSafeSymbol()+"="+j+";");
 858                         first=false;
 859                     }
 860                 }
 861                 cr.outputline("switch("+mincostindex.getSafeSymbol()+") {");
 862                 for(int j=0;j<dnfconst.size();j++) {
 863                     GraphNode gn=(GraphNode)dnfconst.get(j);
 864                     Conjunction conj=((TermNode)gn.getOwner()).getConjunction();
 865                     if (removed.contains(gn))
 866                         continue;
 867                     cr.outputline("case "+j+":");
 868                     cr.startblock();
 869                     for(int k=0;k<conj.size();k++) {
 870                         DNFPredicate dpred=conj.get(k);
 871                         Predicate p=dpred.getPredicate();
 872                         boolean negate=dpred.isNegated();
 873                         VarDescriptor predvalue=VarDescriptor.makeNew("Predicatevalue");
 874                         p.generate(cr,predvalue);
 875                         if (negate)
 876                             cr.outputline("if (maybe||"+predvalue.getSafeSymbol()+")");
 877                         else
 878                             cr.outputline("if (maybe||!"+predvalue.getSafeSymbol()+")");
 879                         cr.startblock();
 880                         if (Compiler.GENERATEINSTRUMENT)
 881                             cr.outputline("abstractcount++;");
 882                         if (p instanceof InclusionPredicate)
 883                             generateinclusionrepair(conj,dpred, cr);
 884                         else if (p instanceof ExprPredicate) {
 885                             ExprPredicate ep=(ExprPredicate)p;
 886                             if (ep.getType()==ExprPredicate.SIZE)
 887                                 generatesizerepair(conj,dpred,cr);
 888                             else if (ep.getType()==ExprPredicate.COMPARISON)
 889                                 generatecomparisonrepair(conj,dpred,cr);
 890                         } else throw new Error("Unrecognized Predicate");
 891                         cr.endblock();
 892                     }
 893                     /* Update model */
 894                     cr.endblock();
 895                     cr.outputline("break;");
 896                 }
 897                 cr.outputline("}");
 898
 899                 cr.outputline("if ("+oldmodel.getSafeSymbol()+")");
 900                 cr.outputline("delete "+oldmodel.getSafeSymbol()+";");
 901                 cr.outputline(oldmodel.getSafeSymbol()+"="+newmodel.getSafeSymbol()+";");
 902                 cr.outputline("goto rebuild;");  /* Rebuild model and all */
 903                 }
 904                 cr.endblock();
 905
 906                 while (quantifiers.hasPrevious()) {
 907                     Quantifier quantifier = (Quantifier) quantifiers.previous();
 908                     cr.endblock();
 909                 }
 910                 cr.endblock();
 911                 cr.outputline("");
 912                 cr.outputline("");
 913             }
 914         }
 915         CodeWriter cr = new StandardCodeWriter(outputaux);
 916         cr.startblock();
 917         cr.outputline("if ("+repairtable.getSafeSymbol()+")");
 918         cr.outputline("delete "+repairtable.getSafeSymbol()+";");
 919         cr.outputline("if ("+oldmodel.getSafeSymbol()+")");
 920         cr.outputline("delete "+oldmodel.getSafeSymbol()+";");
 921         cr.outputline("delete "+newmodel.getSafeSymbol()+";");
 922         cr.outputline("delete "+worklist.getSafeSymbol()+";");
 923         cr.outputline("resettypemap();");
 924         cr.outputline("break;");
 925         cr.endblock();
 926         cr.outputline("rebuild:");
 927         cr.outputline(";");
 928     }
 929
 930     private MultUpdateNode getmultupdatenode(Conjunction conj, DNFPredicate dpred, int repairtype) {
 931         Set nodes=getmultupdatenodeset(conj,dpred,repairtype);
 932         Iterator it=nodes.iterator();
 933         if (it.hasNext())
 934             return (MultUpdateNode)it.next();
 935         else
 936             return null;
 937     }
 938
 939     private Set getmultupdatenodeset(Conjunction conj, DNFPredicate dpred, int repairtype) {
 940         HashSet hs=new HashSet();
 941         MultUpdateNode mun=null;
 942         GraphNode gn=(GraphNode) termination.conjtonodemap.get(conj);
 943         for(Iterator edgeit=gn.edges();(mun==null)&&edgeit.hasNext();) {
 944             GraphNode gn2=((GraphNode.Edge) edgeit.next()).getTarget();
 945             TermNode tn2=(TermNode)gn2.getOwner();
 946             if (tn2.getType()==TermNode.ABSTRACT) {
 947                 AbstractRepair ar=tn2.getAbstract();
 948                 if (((repairtype==-1)||(ar.getType()==repairtype))&&
 949                     ar.getPredicate()==dpred) {
 950                     for(Iterator edgeit2=gn2.edges();edgeit2.hasNext();) {
 951                         GraphNode gn3=((GraphNode.Edge) edgeit2.next()).getTarget();
 952                         if (!removed.contains(gn3)) {
 953                             TermNode tn3=(TermNode)gn3.getOwner();
 954                             if (tn3.getType()==TermNode.UPDATE) {
 955                                 hs.add(mun);
 956                             }
 957                         }
 958                     }
 959                 }
 960             }
 961         }
 962         return hs;
 963     }
 964
 965     private AbstractRepair getabstractrepair(Conjunction conj, DNFPredicate dpred, int repairtype) {
 966         HashSet hs=new HashSet();
 967         MultUpdateNode mun=null;
 968         GraphNode gn=(GraphNode) termination.conjtonodemap.get(conj);
 969         for(Iterator edgeit=gn.edges();(mun==null)&&edgeit.hasNext();) {
 970             GraphNode gn2=((GraphNode.Edge) edgeit.next()).getTarget();
 971             TermNode tn2=(TermNode)gn2.getOwner();
 972             if (tn2.getType()==TermNode.ABSTRACT) {
 973                 AbstractRepair ar=tn2.getAbstract();
 974                 if (((repairtype==-1)||(ar.getType()==repairtype))&&
 975                     ar.getPredicate()==dpred) {
 976                     return ar;
 977                 }
 978             }
 979         }
 980         return null;
 981     }
 982
 983
 984     /** Generates abstract (and concrete) repair for a comparison */
 985
 986     private void generatecomparisonrepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr){
 987         Set updates=getmultupdatenodeset(conj,dpred,AbstractRepair.MODIFYRELATION);
 988         AbstractRepair ar=getabstractrepair(conj,dpred,AbstractRepair.MODIFYRELATION);
 989         MultUpdateNode munmodify=null;
 990         MultUpdateNode munadd=null;
 991         MultUpdateNode munremove=null;
 992         for(Iterator it=updates.iterator();it.hasNext();) {
 993             MultUpdateNode mun=(MultUpdateNode)it.next();
 994             if (mun.getType()==MultUpdateNode.ADD) {
 995                 munadd=mun;
 996             } else if (mun.getType()==MultUpdateNode.REMOVE) {
 997                 munremove=mun;
 998             } else if (mun.getType()==MultUpdateNode.MODIFY) {
 999                 munmodify=mun;
1000             }
1001         }
1002
1003         ExprPredicate ep=(ExprPredicate)dpred.getPredicate();
1004         RelationDescriptor rd=(RelationDescriptor)ep.getDescriptor();
1005         boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1006         boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1007         boolean inverted=ep.inverted();
1008         boolean negated=dpred.isNegated();
1009         OpExpr expr=(OpExpr)ep.expr;
1010         Opcode opcode=expr.getOpcode();
1011         VarDescriptor leftside=VarDescriptor.makeNew("leftside");
1012         VarDescriptor rightside=VarDescriptor.makeNew("rightside");
1013         VarDescriptor newvalue=VarDescriptor.makeNew("newvalue");
1014         if (!inverted) {
1015             ((RelationExpr)expr.getLeftExpr()).getExpr().generate(cr,leftside);
1016             expr.getRightExpr().generate(cr,newvalue);
1017             cr.outputline(rd.getRange().getType().getGenerateType().getSafeSymbol()+" "+rightside.getSafeSymbol()+";");
1018             cr.outputline(rd.getSafeSymbol()+"_hash->get("+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
1019         } else {
1020             ((RelationExpr)expr.getLeftExpr()).getExpr().generate(cr,rightside);
1021             expr.getRightExpr().generate(cr,newvalue);
1022             cr.outputline(rd.getDomain().getType().getGenerateType().getSafeSymbol()+" "+leftside.getSafeSymbol()+";");
1023             cr.outputline(rd.getSafeSymbol()+"_hashinv->get("+rightside.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
1024         }
1025         if (negated)
1026             if (opcode==Opcode.GT) {
1027                 opcode=Opcode.LE;
1028             } else if (opcode==Opcode.GE) {
1029                 opcode=Opcode.LT;
1030             } else if (opcode==Opcode.LT) {
1031                 opcode=Opcode.GE;
1032             } else if (opcode==Opcode.LE) {
1033                 opcode=Opcode.GT;
1034             } else if (opcode==Opcode.EQ) {
1035                 opcode=Opcode.NE;
1036             } else if (opcode==Opcode.NE) {
1037                 opcode=Opcode.EQ;
1038             } else {
1039                 throw new Error("Unrecognized Opcode");
1040             }
1041
1042         if (opcode==Opcode.GT) {
1043             cr.outputline(newvalue.getSafeSymbol()+"++;");
1044         } else if (opcode==Opcode.GE) {
1045             /* Equal */
1046         } else if (opcode==Opcode.LT) {
1047             cr.outputline(newvalue.getSafeSymbol()+"--;");
1048         } else if (opcode==Opcode.LE) {
1049             /* Equal */
1050         } else if (opcode==Opcode.EQ) {
1051             /* Equal */
1052         } else if (opcode==Opcode.NE) { /* search for FLAGNE if this is changed*/
1053             cr.outputline(newvalue.getSafeSymbol()+"++;");
1054         } else {
1055             throw new Error("Unrecognized Opcode");
1056         }
1057         /* Do abstract repairs */
1058         if (usageimage) {
1059             cr.outputline(rd.getSafeSymbol()+"_hash->remove("+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
1060             if (!inverted) {
1061                 cr.outputline(rd.getSafeSymbol()+"_hash->add("+leftside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
1062             } else {
1063                 cr.outputline(rd.getSafeSymbol()+"_hash->add("+newvalue.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
1064             }
1065         }
1066         if (usageinvimage) {
1067             cr.outputline(rd.getSafeSymbol()+"_hashinv->remove("+rightside.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
1068             if (!inverted) {
1069                 cr.outputline(rd.getSafeSymbol()+"_hashinv->add("+newvalue.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
1070             } else {
1071                 cr.outputline(rd.getSafeSymbol()+"_hashinv->add("+rightside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
1072             }
1073         }
1074         /* Do concrete repairs */
1075         if (munmodify!=null) {
1076             for(int i=0;i<state.vRules.size();i++) {
1077                 Rule r=(Rule)state.vRules.get(i);
1078                 if (r.getInclusion().getTargetDescriptors().contains(rd)) {
1079                     for(int j=0;j<munmodify.numUpdates();j++) {
1080                         UpdateNode un=munmodify.getUpdate(j);
1081                         if (un.getRule()==r) {
1082                             /* Update for rule r */
1083                             String name=(String)updatenames.get(un);
1084                             cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+","+newvalue.getSafeSymbol()+");");
1085                         }
1086                     }
1087                 }
1088             }
1089         } else {
1090             /* Start with scheduling removal */
1091
1092             if (ar.needsRemoves(state))
1093                 for(int i=0;i<state.vRules.size();i++) {
1094                     Rule r=(Rule)state.vRules.get(i);
1095                     if (r.getInclusion().getTargetDescriptors().contains(rd)) {
1096                         for(int j=0;j<munremove.numUpdates();j++) {
1097                             UpdateNode un=munremove.getUpdate(i);
1098                             if (un.getRule()==r) {
1099                                 /* Update for rule r */
1100                                 String name=(String)updatenames.get(un);
1101                                 cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+");");
1102                             }
1103                         }
1104                     }
1105                 }
1106             /* Now do addition */
1107             UpdateNode un=munadd.getUpdate(0);
1108             String name=(String)updatenames.get(un);
1109             if (!inverted) {
1110                 cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
1111             } else {
1112                 cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newvalue.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
1113             }
1114         }
1115     }
1116
1117     public void generatesizerepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr) {
1118         ExprPredicate ep=(ExprPredicate)dpred.getPredicate();
1119         OpExpr expr=(OpExpr)ep.expr;
1120         Opcode opcode=expr.getOpcode();
1121         opcode=Opcode.translateOpcode(dpred.isNegated(),opcode);
1122
1123         MultUpdateNode munremove;
1124
1125         MultUpdateNode munadd;
1126         if (ep.getDescriptor() instanceof RelationDescriptor) {
1127             munremove=getmultupdatenode(conj,dpred,AbstractRepair.REMOVEFROMRELATION);
1128             munadd=getmultupdatenode(conj,dpred,AbstractRepair.ADDTORELATION);
1129         } else {
1130             munremove=getmultupdatenode(conj,dpred,AbstractRepair.REMOVEFROMSET);
1131             munadd=getmultupdatenode(conj,dpred,AbstractRepair.ADDTOSET);
1132         }
1133         int size=ep.rightSize();
1134         VarDescriptor sizevar=VarDescriptor.makeNew("size");
1135         ((OpExpr)expr).left.generate(cr, sizevar);
1136         VarDescriptor change=VarDescriptor.makeNew("change");
1137         cr.outputline("int "+change.getSafeSymbol()+";");
1138         boolean generateadd=false;
1139         boolean generateremove=false;
1140         if (opcode==Opcode.GT) {
1141             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size+1)+"-"+sizevar.getSafeSymbol()+";");
1142             generateadd=true;
1143             generateremove=false;
1144         } else if (opcode==Opcode.GE) {
1145             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size)+"-"+sizevar.getSafeSymbol()+";");
1146             generateadd=true;
1147             generateremove=false;
1148         } else if (opcode==Opcode.LT) {
1149             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size-1)+"-"+sizevar.getSafeSymbol()+";");
1150             generateadd=false;
1151             generateremove=true;
1152         } else if (opcode==Opcode.LE) {
1153             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size)+"-"+sizevar.getSafeSymbol()+";");
1154             generateadd=false;
1155             generateremove=true;
1156         } else if (opcode==Opcode.EQ) {
1157             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size)+"-"+sizevar.getSafeSymbol()+";");
1158             if (size==0)
1159                 generateadd=false;
1160             else
1161                 generateadd=true;
1162             generateremove=true;
1163         } else if (opcode==Opcode.NE) {
1164             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size+1)+"-"+sizevar.getSafeSymbol()+";");
1165             generateadd=true;
1166             generateremove=false;
1167         } else {
1168             throw new Error("Unrecognized Opcode");
1169         }
1170
1171 // In some cases the analysis has determined that generating removes
1172 // is unnecessary
1173         if (generateremove&&munremove==null)
1174             generateremove=false;
1175
1176         Descriptor d=ep.getDescriptor();
1177         if (generateremove) {
1178             cr.outputline("for(;"+change.getSafeSymbol()+"<0;"+change.getSafeSymbol()+"++)");
1179             cr.startblock();
1180             /* Find element to remove */
1181             VarDescriptor leftvar=VarDescriptor.makeNew("leftvar");
1182             VarDescriptor rightvar=VarDescriptor.makeNew("rightvar");
1183             if (d instanceof RelationDescriptor) {
1184                 if (ep.inverted()) {
1185                     rightvar=((ImageSetExpr)((SizeofExpr)((OpExpr)expr).left).setexpr).getVar();
1186                     cr.outputline("int "+leftvar.getSafeSymbol()+";");
1187                     cr.outputline(d.getSafeSymbol()+"_hashinv->get((int)"+rightvar.getSafeSymbol()+","+leftvar.getSafeSymbol()+");");
1188                 } else {
1189                     leftvar=((ImageSetExpr)((SizeofExpr)((OpExpr)expr).left).setexpr).getVar();
1190                     cr.outputline("int "+rightvar.getSafeSymbol()+"=0;");
1191                     cr.outputline(d.getSafeSymbol()+"_hash->get((int)"+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+");");
1192                 }
1193             } else {
1194                 cr.outputline("int "+leftvar.getSafeSymbol()+"="+d.getSafeSymbol()+"_hash->firstkey();");
1195             }
1196             /* Generate abstract remove instruction */
1197             if (d instanceof RelationDescriptor) {
1198                 RelationDescriptor rd=(RelationDescriptor) d;
1199                 boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1200                 boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1201                 if (usageimage)
1202                     cr.outputline(rd.getSafeSymbol() + "_hash->remove((int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1203                 if (usageinvimage)
1204                     cr.outputline(rd.getSafeSymbol() + "_hashinv->remove((int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1205             } else {
1206                 cr.outputline(d.getSafeSymbol() + "_hash->remove((int)" + leftvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1207             }
1208             /* Generate concrete remove instruction */
1209             for(int i=0;i<state.vRules.size();i++) {
1210                 Rule r=(Rule)state.vRules.get(i);
1211                 if (r.getInclusion().getTargetDescriptors().contains(d)) {
1212                     for(int j=0;j<munremove.numUpdates();j++) {
1213                         UpdateNode un=munremove.getUpdate(j);
1214                         if (un.getRule()==r) {
1215                                 /* Update for rule rule r */
1216                             String name=(String)updatenames.get(un);
1217                             if (d instanceof RelationDescriptor) {
1218                                 cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+d.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+",(int) &"+name+");");
1219                             } else {
1220                                 cr.outputline(repairtable.getSafeSymbol()+"->addset("+d.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+",(int) &"+name+");");
1221                             }
1222                         }
1223                     }
1224                 }
1225             }
1226             cr.endblock();
1227         }
1228         if (generateadd) {
1229
1230             cr.outputline("for(;"+change.getSafeSymbol()+">0;"+change.getSafeSymbol()+"--)");
1231             cr.startblock();
1232             VarDescriptor newobject=VarDescriptor.makeNew("newobject");
1233             if (d instanceof RelationDescriptor) {
1234                 VarDescriptor otherside=((ImageSetExpr)((SizeofExpr)((OpExpr)ep.expr).left).setexpr).vd;
1235                 RelationDescriptor rd=(RelationDescriptor)d;
1236                 if (termination.sources.relsetSource(rd,!ep.inverted())) {
1237                     /* Set Source */
1238                     SetDescriptor sd=termination.sources.relgetSourceSet(rd,!ep.inverted());
1239                     VarDescriptor iterator=VarDescriptor.makeNew("iterator");
1240                     cr.outputline(sd.getType().getGenerateType().getSafeSymbol() +" "+newobject.getSafeSymbol()+";");
1241                     cr.outputline("SimpleIterator "+iterator.getSafeSymbol()+";");
1242                     cr.outputline("for("+sd.getSafeSymbol()+"_hash->iterator("+ iterator.getSafeSymbol() +");"+iterator.getSafeSymbol()+".hasNext();)");
1243                     cr.startblock();
1244                     if (ep.inverted()) {
1245                         cr.outputline("if (!"+rd.getSafeSymbol()+"_hashinv->contains("+iterator.getSafeSymbol()+".key(),"+otherside.getSafeSymbol()+"))");
1246                     } else {
1247                         cr.outputline("if (!"+rd.getSafeSymbol()+"_hash->contains("+otherside.getSafeSymbol()+","+iterator.getSafeSymbol()+".key()))");
1248                     }
1249                     cr.outputline(newobject.getSafeSymbol()+"="+iterator.getSafeSymbol()+".key();");
1250                     cr.outputline(iterator.getSafeSymbol()+".next();");
1251                     cr.endblock();
1252                 } else if (termination.sources.relallocSource(rd,!ep.inverted())) {
1253                     /* Allocation Source*/
1254                     termination.sources.relgenerateSourceAlloc(cr,newobject,rd,!ep.inverted());
1255                 } else throw new Error("No source for adding to Relation");
1256                 if (ep.inverted()) {
1257                     boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1258                     boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1259                     if (usageimage)
1260                         cr.outputline(rd.getSafeSymbol()+"_hash->add("+newobject.getSafeSymbol()+","+otherside.getSafeSymbol()+");");
1261                     if (usageinvimage)
1262                         cr.outputline(rd.getSafeSymbol()+"_hashinv->add("+otherside.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1263
1264                     UpdateNode un=munadd.getUpdate(0);
1265                     String name=(String)updatenames.get(un);
1266                     cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newobject.getSafeSymbol()+","+otherside.getSafeSymbol()+");");
1267                 } else {
1268                     boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1269                     boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1270                     if (usageimage)
1271                         cr.outputline(rd.getSafeSymbol()+"_hash->add("+otherside.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1272                     if (usageinvimage)
1273                         cr.outputline(rd.getSafeSymbol()+"_hashinv->add("+newobject.getSafeSymbol()+","+otherside.getSafeSymbol()+");");
1274                     UpdateNode un=munadd.getUpdate(0);
1275                     String name=(String)updatenames.get(un);
1276                     cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+otherside.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1277                 }
1278             } else {
1279                 SetDescriptor sd=(SetDescriptor)d;
1280                 if (termination.sources.setSource(sd)) {
1281                     /* Set Source */
1282                     /* Set Source */
1283                     SetDescriptor sourcesd=termination.sources.getSourceSet(sd);
1284                     VarDescriptor iterator=VarDescriptor.makeNew("iterator");
1285                     cr.outputline(sourcesd.getType().getGenerateType().getSafeSymbol() +" "+newobject.getSafeSymbol()+";");
1286                     cr.outputline("SimpleIterator "+iterator.getSafeSymbol()+";");
1287                     cr.outputline("for("+sourcesd.getSafeSymbol()+"_hash->iterator("+iterator.getSafeSymbol()+");"+iterator.getSafeSymbol()+".hasNext();)");
1288                     cr.startblock();
1289                     cr.outputline("if (!"+sd.getSafeSymbol()+"_hash->contains("+iterator.getSafeSymbol()+".key()))");
1290                     cr.outputline(newobject.getSafeSymbol()+"="+iterator.getSafeSymbol()+".key();");
1291                     cr.outputline(iterator.getSafeSymbol()+".next();");
1292                     cr.endblock();
1293                 } else if (termination.sources.allocSource(sd)) {
1294                     /* Allocation Source*/
1295                     termination.sources.generateSourceAlloc(cr,newobject,sd);
1296                 } else throw new Error("No source for adding to Set");
1297                 cr.outputline(sd.getSafeSymbol()+"_hash->add("+newobject.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1298                 UpdateNode un=munadd.getUpdate(0);
1299                 String name=(String)updatenames.get(un);
1300                 cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1301             }
1302             cr.endblock();
1303         }
1304     }
1305
1306     public void generateinclusionrepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr){
1307         InclusionPredicate ip=(InclusionPredicate) dpred.getPredicate();
1308         boolean negated=dpred.isNegated();
1309         MultUpdateNode mun=getmultupdatenode(conj,dpred,-1);
1310         VarDescriptor leftvar=VarDescriptor.makeNew("left");
1311         ip.expr.generate(cr, leftvar);
1312
1313         if (negated) {
1314             if (ip.setexpr instanceof ImageSetExpr) {
1315                 ImageSetExpr ise=(ImageSetExpr) ip.setexpr;
1316                 VarDescriptor rightvar=ise.getVar();
1317                 boolean inverse=ise.inverted();
1318                 RelationDescriptor rd=ise.getRelation();
1319                 boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1320                 boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1321                 if (inverse) {
1322                     if (usageimage)
1323                         cr.outputline(rd.getSafeSymbol() + "_hash->remove((int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1324                     if (usageinvimage)
1325                         cr.outputline(rd.getSafeSymbol() + "_hashinv->remove((int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1326                 } else {
1327                     if (usageimage)
1328                         cr.outputline(rd.getSafeSymbol() + "_hash->remove((int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1329                     if (usageinvimage)
1330                         cr.outputline(rd.getSafeSymbol() + "_hashinv->remove((int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1331                 }
1332                 for(int i=0;i<state.vRules.size();i++) {
1333                     Rule r=(Rule)state.vRules.get(i);
1334                     if (r.getInclusion().getTargetDescriptors().contains(rd)) {
1335                         for(int j=0;j<mun.numUpdates();j++) {
1336                             UpdateNode un=mun.getUpdate(j);
1337                             if (un.getRule()==r) {
1338                                 /* Update for rule rule r */
1339                                 String name=(String)updatenames.get(un);
1340                                 if (inverse) {
1341                                     cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+rightvar.getSafeSymbol()+","+leftvar.getSafeSymbol()+",(int) &"+name+");");
1342                                 } else {
1343                                     cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+",(int) &"+name+");");
1344                                 }
1345                             }
1346                         }
1347                     }
1348                 }
1349             } else {
1350                 SetDescriptor sd=ip.setexpr.sd;
1351                 cr.outputline(sd.getSafeSymbol() + "_hash->remove((int)" + leftvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1352
1353                 for(int i=0;i<state.vRules.size();i++) {
1354                     Rule r=(Rule)state.vRules.get(i);
1355                     if (r.getInclusion().getTargetDescriptors().contains(sd)) {
1356                         for(int j=0;j<mun.numUpdates();j++) {
1357                             UpdateNode un=mun.getUpdate(j);
1358                             if (un.getRule()==r) {
1359                                 /* Update for rule rule r */
1360                                 String name=(String)updatenames.get(un);
1361                                 cr.outputline(repairtable.getSafeSymbol()+"->addset("+sd.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+",(int) &"+name+");");
1362                             }
1363                         }
1364                     }
1365                 }
1366             }
1367         } else {
1368             /* Generate update */
1369             if (ip.setexpr instanceof ImageSetExpr) {
1370                 ImageSetExpr ise=(ImageSetExpr) ip.setexpr;
1371                 VarDescriptor rightvar=ise.getVar();
1372                 boolean inverse=ise.inverted();
1373                 RelationDescriptor rd=ise.getRelation();
1374                 boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1375                 boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1376                 if (inverse) {
1377                     if (usageimage)
1378                         cr.outputline(rd.getSafeSymbol() + "_hash->add((int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1379                     if (usageinvimage)
1380                         cr.outputline(rd.getSafeSymbol() + "_hashinv->add((int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1381                 } else {
1382                     if (usageimage)
1383                         cr.outputline(rd.getSafeSymbol() + "_hash->add((int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1384                     if (usageinvimage)
1385                         cr.outputline(rd.getSafeSymbol() + "_hashinv->add((int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1386                 }
1387                 UpdateNode un=mun.getUpdate(0);
1388                 String name=(String)updatenames.get(un);
1389                 if (inverse) {
1390                     cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+rightvar.getSafeSymbol()+","+leftvar.getSafeSymbol()+");");
1391                 } else {
1392                     cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+");");
1393                 }
1394             } else {
1395                 SetDescriptor sd=ip.setexpr.sd;
1396                 cr.outputline(sd.getSafeSymbol() + "_hash->add((int)" + leftvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1397
1398                 UpdateNode un=mun.getUpdate(0);
1399                 /* Update for rule rule r */
1400                 String name=(String)updatenames.get(un);
1401                 cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftvar.getSafeSymbol()+");");
1402             }
1403         }
1404     }
1405
1406     public static Vector getrulelist(Descriptor d) {
1407         Vector dispatchrules = new Vector();
1408         Vector rules = State.currentState.vRules;
1409
1410         for (int i = 0; i < rules.size(); i++) {
1411             Rule rule = (Rule) rules.elementAt(i);
1412             Set requiredsymbols = rule.getRequiredDescriptors();
1413
1414             // #TBD#: in general this is wrong because these descriptors may contain descriptors
1415             // bound in "in?" expressions which need to be dealt with in a topologically sorted
1416             // fashion...
1417
1418             if (rule.getRequiredDescriptors().contains(d)) {
1419                 dispatchrules.addElement(rule);
1420             }
1421         }
1422         return dispatchrules;
1423     }
1424
1425     private boolean need_compensation(Rule r) {
1426         if (!Compiler.REPAIR)
1427             return false;
1428         GraphNode gn=(GraphNode)termination.scopefalsify.get(r);
1429         for(Iterator edgeit=gn.edges();edgeit.hasNext();) {
1430             GraphNode.Edge edge=(GraphNode.Edge)edgeit.next();
1431             GraphNode gn2=edge.getTarget();
1432             if (!removed.contains(gn2)) {
1433                 TermNode tn2=(TermNode)gn2.getOwner();
1434                 if (tn2.getType()==TermNode.CONSEQUENCE)
1435                     return false;
1436             }
1437         }
1438         return true;
1439     }
1440
1441     private UpdateNode find_compensation(Rule r) {
1442         GraphNode gn=(GraphNode)termination.scopefalsify.get(r);
1443         for(Iterator edgeit=gn.edges();edgeit.hasNext();) {
1444             GraphNode.Edge edge=(GraphNode.Edge)edgeit.next();
1445             GraphNode gn2=edge.getTarget();
1446             if (!removed.contains(gn2)) {
1447                 TermNode tn2=(TermNode)gn2.getOwner();
1448                 if (tn2.getType()==TermNode.UPDATE) {
1449                     MultUpdateNode mun=tn2.getUpdate();
1450                     for(int i=0;i<mun.numUpdates();i++) {
1451                         UpdateNode un=mun.getUpdate(i);
1452                         if (un.getRule()==r)
1453                             return un;
1454                     }
1455                 }
1456             }
1457         }
1458         throw new Error("No Compensation Update could be found");
1459     }
1460
1461     public void generate_dispatch(CodeWriter cr, RelationDescriptor rd, String leftvar, String rightvar) {
1462         boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1463         boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1464
1465         if (!(usageinvimage||usageimage)) /* not used at all*/
1466             return;
1467
1468         cr.outputline("// RELATION DISPATCH ");
1469         if (Compiler.REPAIR) {
1470             cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
1471             if (usageimage)
1472                 cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+rd.getJustSafeSymbol()+"_hash->contains("+leftvar+","+rightvar+"))");
1473             else
1474                 cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+rd.getJustSafeSymbol()+"_hashinv->contains("+rightvar+","+leftvar+"))");
1475
1476             cr.startblock(); {
1477                 /* Adding new item */
1478                 /* Perform safety checks */
1479                 cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
1480                 cr.outputline(repairtable.getSafeSymbol()+"->containsrelation("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+"))");
1481                 cr.startblock(); {
1482                     /* Have update to call into */
1483                     VarDescriptor mdfyptr=VarDescriptor.makeNew("modifyptr");
1484                     VarDescriptor ismdfyptr=VarDescriptor.makeNew("ismodifyptr");
1485                     cr.outputline("int "+ismdfyptr.getSafeSymbol()+"="+repairtable.getSafeSymbol()+"->ismodify("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
1486
1487
1488
1489
1490                     String parttype="";
1491                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1492                         if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
1493                             parttype=parttype+", int, int";
1494                         else
1495                             parttype=parttype+", int";
1496                     }
1497                     VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
1498                     VarDescriptor tmpptr=VarDescriptor.makeNew("tempupdateptr");
1499
1500                     String methodcall="("+funptr.getSafeSymbol()+") (this,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
1501                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1502                         Quantifier q=currentrule.getQuantifier(i);
1503                         if (q instanceof SetQuantifier) {
1504                             SetQuantifier sq=(SetQuantifier) q;
1505                             methodcall+=","+sq.getVar().getSafeSymbol();
1506                         } else if (q instanceof RelationQuantifier) {
1507                             RelationQuantifier rq=(RelationQuantifier) q;
1508                             methodcall+=","+rq.x.getSafeSymbol();
1509                             methodcall+=","+rq.y.getSafeSymbol();
1510                         } else if (q instanceof ForQuantifier) {
1511                             ForQuantifier fq=(ForQuantifier) q;
1512                             methodcall+=","+fq.getVar().getSafeSymbol();
1513                         }
1514                     }
1515
1516
1517
1518                     cr.outputline("void *"+tmpptr.getSafeSymbol()+"=");
1519                     cr.outputline("(void *) "+repairtable.getSafeSymbol()+"->getrelation("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
1520                     cr.outputline("if ("+ismdfyptr.getSafeSymbol()+")");
1521                     {
1522                         cr.startblock();
1523                         cr.outputline("int "+mdfyptr.getSafeSymbol()+"="+repairtable.getSafeSymbol()+"->getrelation2("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
1524                         cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+",int,int,int)="+"(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+",int,int,int)) "+tmpptr.getSafeSymbol()+";");
1525                         cr.outputline(methodcall+","+leftvar+", "+rightvar+", "+mdfyptr.getSafeSymbol() +");");
1526                         cr.endblock();
1527                     }
1528                     cr.outputline("else ");
1529                     {
1530                         cr.startblock();
1531                         cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")="+"(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")) "+tmpptr.getSafeSymbol()+";");
1532                         cr.outputline(methodcall+");");
1533                         cr.endblock();
1534                     }
1535                     cr.outputline("delete "+newmodel.getSafeSymbol()+";");
1536                     cr.outputline("goto rebuild;");
1537                 }
1538                 cr.endblock();
1539
1540                 /* Build standard compensation actions */
1541                 if (need_compensation(currentrule)) {
1542                     UpdateNode un=find_compensation(currentrule);
1543                     String name=(String)updatenames.get(un);
1544                     usedupdates.add(un); /* Mark as used */
1545                     String methodcall=name+"(this,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
1546                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1547                         Quantifier q=currentrule.getQuantifier(i);
1548                         if (q instanceof SetQuantifier) {
1549                             SetQuantifier sq=(SetQuantifier) q;
1550                             methodcall+=","+sq.getVar().getSafeSymbol();
1551                         } else if (q instanceof RelationQuantifier) {
1552                             RelationQuantifier rq=(RelationQuantifier) q;
1553                             methodcall+=","+rq.x.getSafeSymbol();
1554                             methodcall+=","+rq.y.getSafeSymbol();
1555                         } else if (q instanceof ForQuantifier) {
1556                             ForQuantifier fq=(ForQuantifier) q;
1557                             methodcall+=","+fq.getVar().getSafeSymbol();
1558                         }
1559                     }
1560                     methodcall+=");";
1561                     cr.outputline(methodcall);
1562                     cr.outputline("delete "+newmodel.getSafeSymbol()+";");
1563                     cr.outputline("goto rebuild;");
1564                 }
1565             }
1566             cr.endblock();
1567         }
1568
1569         String addeditem = (VarDescriptor.makeNew("addeditem")).getSafeSymbol();
1570         cr.outputline("int " + addeditem + "=0;");
1571
1572         String ifstring="if (!maybe&&";
1573         boolean dogenerate=false;
1574         if (rd.getDomain().getType() instanceof StructureTypeDescriptor)  {
1575             dogenerate=true;
1576             ifstring+=leftvar;
1577         }
1578
1579         if (rd.getRange().getType() instanceof StructureTypeDescriptor)  {
1580             if (dogenerate)
1581                 ifstring+="&&"+rightvar;
1582             else
1583                 ifstring+=rightvar;
1584             dogenerate=true;
1585         }
1586
1587         ifstring+=")";
1588
1589         if (rd.testUsage(RelationDescriptor.IMAGE)) {
1590             cr.outputline(ifstring);
1591             cr.outputline(addeditem + " = " + rd.getSafeSymbol() + "_hash->add((int)" + leftvar + ", (int)" + rightvar+ ");");
1592         }
1593
1594         if (rd.testUsage(RelationDescriptor.INVIMAGE)) {
1595             cr.outputline(ifstring);
1596             cr.outputline(addeditem + " = " + rd.getSafeSymbol() + "_hashinv->add((int)" + rightvar + ", (int)" + leftvar + ");");
1597         }
1598
1599
1600         Vector dispatchrules = getrulelist(rd);
1601
1602         Set toremove=new HashSet();
1603         for(int i=0;i<dispatchrules.size();i++) {
1604             Rule r=(Rule)dispatchrules.get(i);
1605             if (!ruleset.contains(r))
1606                 toremove.add(r);
1607         }
1608         dispatchrules.removeAll(toremove);
1609         if (dispatchrules.size() == 0) {
1610             cr.outputline("// nothing to dispatch");
1611             return;
1612         }
1613
1614         cr.outputline("if (" + addeditem + ")");
1615         cr.startblock();
1616
1617         for(int i = 0; i < dispatchrules.size(); i++) {
1618             Rule rule = (Rule) dispatchrules.elementAt(i);
1619             if (rule.getGuardExpr().getRequiredDescriptors().contains(rd)) {
1620                 /* Guard depends on this relation, so we recomput everything */
1621                 cr.outputline(worklist.getSafeSymbol()+"->add("+rule.getNum()+",-1,0,0);");
1622             } else {
1623                 for (int j=0;j<rule.numQuantifiers();j++) {
1624                     Quantifier q=rule.getQuantifier(j);
1625                     if (q.getRequiredDescriptors().contains(rd)) {
1626                         /* Generate add */
1627                         cr.outputline(worklist.getSafeSymbol()+"->add("+rule.getNum()+","+j+","+leftvar+","+rightvar+");");
1628                     }
1629                 }
1630             }
1631         }
1632
1633         cr.endblock();
1634     }
1635
1636
1637     public void generate_dispatch(CodeWriter cr, SetDescriptor sd, String setvar) {
1638         cr.outputline("// SET DISPATCH ");
1639         if (Compiler.REPAIR) {
1640             cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
1641             cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+sd.getJustSafeSymbol()+"_hash->contains("+setvar+"))");
1642             cr.startblock(); {
1643                 /* Adding new item */
1644                 /* See if there is an outstanding update in the repairtable */
1645                 cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
1646                 cr.outputline(repairtable.getSafeSymbol()+"->containsset("+sd.getNum()+","+currentrule.getNum()+","+setvar+"))");
1647                 cr.startblock(); {
1648                     /* Have update to call into */
1649                     VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
1650                     String parttype="";
1651                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1652                         if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
1653                             parttype=parttype+", int, int";
1654                         else
1655                             parttype=parttype+", int";
1656                     }
1657                     cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")=");
1658                     cr.outputline("(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")) "+repairtable.getSafeSymbol()+"->getset("+sd.getNum()+","+currentrule.getNum()+","+setvar+");");
1659                     String methodcall="("+funptr.getSafeSymbol()+") (this,"+oldmodel.getSafeSymbol()+","+
1660                         repairtable.getSafeSymbol();
1661                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1662                         Quantifier q=currentrule.getQuantifier(i);
1663                         if (q instanceof SetQuantifier) {
1664                             SetQuantifier sq=(SetQuantifier) q;
1665                             methodcall+=","+sq.getVar().getSafeSymbol();
1666                         } else if (q instanceof RelationQuantifier) {
1667                             RelationQuantifier rq=(RelationQuantifier) q;
1668                             methodcall+=","+rq.x.getSafeSymbol();
1669                             methodcall+=","+rq.y.getSafeSymbol();
1670                         } else if (q instanceof ForQuantifier) {
1671                             ForQuantifier fq=(ForQuantifier) q;
1672                             methodcall+=","+fq.getVar().getSafeSymbol();
1673                         }
1674                     }
1675                     methodcall+=");";
1676                     cr.outputline(methodcall);
1677                     cr.outputline("delete "+newmodel.getSafeSymbol()+";");
1678                     cr.outputline("goto rebuild;");
1679                 }
1680                 cr.endblock();
1681                 /* Build standard compensation actions */
1682                 Vector ruleset=new Vector();
1683                 ruleset.add(currentrule);
1684                 if (state.implicitruleinv.containsKey(currentrule))
1685                     ruleset.addAll((Set)state.implicitruleinv.get(currentrule));
1686                 for(int i=0;i<ruleset.size();i++) {
1687                     Rule itrule=(Rule)ruleset.get(i);
1688
1689                     if (need_compensation(itrule)) {
1690                         UpdateNode un=find_compensation(itrule);
1691                         String name=(String)updatenames.get(un);
1692                         usedupdates.add(un); /* Mark as used */
1693
1694                         String methodcall=name+"(this,"+oldmodel.getSafeSymbol()+","+
1695                             repairtable.getSafeSymbol();
1696                         for(int j=0;j<currentrule.numQuantifiers();j++) {
1697                             Quantifier q=currentrule.getQuantifier(j);
1698                             if (q instanceof SetQuantifier) {
1699                                 SetQuantifier sq=(SetQuantifier) q;
1700                                 methodcall+=","+sq.getVar().getSafeSymbol();
1701                             } else if (q instanceof RelationQuantifier) {
1702                                 RelationQuantifier rq=(RelationQuantifier) q;
1703                                 methodcall+=","+rq.x.getSafeSymbol();
1704                                 methodcall+=","+rq.y.getSafeSymbol();
1705                             } else if (q instanceof ForQuantifier) {
1706                                 ForQuantifier fq=(ForQuantifier) q;
1707                                 methodcall+=","+fq.getVar().getSafeSymbol();
1708                             }
1709                         }
1710                         methodcall+=");";
1711                         if (currentrule!=itrule) {
1712                             SetDescriptor sdrule=((SetInclusion)itrule.getInclusion()).getSet();
1713                             cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
1714                             cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+sdrule.getJustSafeSymbol()+"_hash->contains("+setvar+"))");
1715                             cr.startblock();
1716                         }
1717                         cr.outputline(methodcall);
1718                         cr.outputline("delete "+newmodel.getSafeSymbol()+";");
1719                         cr.outputline("goto rebuild;");
1720                         cr.endblock();
1721                     }
1722                     if (currentrule==itrule)
1723                         cr.endblock();
1724                 }
1725             }
1726         }
1727
1728         String addeditem = (VarDescriptor.makeNew("addeditem")).getSafeSymbol();
1729         cr.outputline("int " + addeditem + " = 0;");
1730         if (sd.getType() instanceof StructureTypeDescriptor)  {
1731             cr.outputline("if (!maybe&&"+setvar+")");
1732         } else
1733             cr.outputline("if (!maybe)");
1734         cr.outputline(addeditem + " = " + sd.getSafeSymbol() + "_hash->add((int)" + setvar +  ", (int)" + setvar + ");");
1735         cr.startblock();
1736         Vector dispatchrules = getrulelist(sd);
1737
1738         Set toremove=new HashSet();
1739         for(int i=0;i<dispatchrules.size();i++) {
1740             Rule r=(Rule)dispatchrules.get(i);
1741             if (!ruleset.contains(r))
1742                 toremove.add(r);
1743         }
1744         dispatchrules.removeAll(toremove);
1745
1746         if (dispatchrules.size() == 0) {
1747             cr.outputline("// nothing to dispatch");
1748             cr.endblock();
1749             return;
1750         }
1751         /* Add item to worklist if new */
1752         cr.outputline("if ("+addeditem+")");
1753         cr.startblock();
1754         for(int i = 0; i < dispatchrules.size(); i++) {
1755             Rule rule = (Rule) dispatchrules.elementAt(i);
1756             if (SetDescriptor.expand(rule.getGuardExpr().getRequiredDescriptors()).contains(sd)) {
1757                 /* Guard depends on this relation, so we recompute everything */
1758                 cr.outputline(worklist.getSafeSymbol()+"->add("+rule.getNum()+",-1,0,0);");
1759             } else {
1760                 for (int j=0;j<rule.numQuantifiers();j++) {
1761                     Quantifier q=rule.getQuantifier(j);
1762                     if (SetDescriptor.expand(q.getRequiredDescriptors()).contains(sd)) {
1763                         /* Generate add */
1764                         cr.outputline(worklist.getSafeSymbol()+"->add("+rule.getNum()+","+j+","+setvar+",0);");
1765                     }
1766                 }
1767             }
1768         }
1769         cr.endblock();
1770         cr.endblock();
1771     }
1772 }