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     PrintWrapper outputrepair = null;
  11     PrintWrapper outputaux = null;
  12     PrintWrapper 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 PrintWrapper(new java.io.PrintWriter(outputrepair, true));
  78         this.outputaux = new PrintWrapper(new java.io.PrintWriter(outputaux, true));
  79         this.outputhead = new PrintWrapper(new java.io.PrintWriter(outputhead, true));
  80
  81         headername=st;
  82         name_updates();
  83         generatetypechecks(true);
  84         generate_tokentable();
  85         RelationDescriptor.prefix = "thisvar->";
  86         SetDescriptor.prefix = "thisvar->";
  87
  88         generate_hashtables();
  89         generate_stateobject();
  90
  91
  92         /* Rewrite globals */
  93         CodeWriter craux = new StandardCodeWriter(this.outputaux);
  94         for (Iterator it=this.state.stGlobals.descriptors();it.hasNext();) {
  95             VarDescriptor vd=(VarDescriptor)it.next();
  96             craux.outputline("#define "+vd.getSafeSymbol()+" thisvar->"+vd.getSafeSymbol());
  97         }
  98
  99
 100         generate_call();
 101         generate_start();
 102         generate_rules();
 103         if (!Compiler.REPAIR||Compiler.GENERATEDEBUGPRINT) {
 104             generate_print();
 105         }
 106         generate_checks();
 107         generate_teardown();
 108         CodeWriter crhead = new StandardCodeWriter(this.outputhead);
 109         craux = new StandardCodeWriter(this.outputaux);
 110         craux.emptyBuffer();
 111         craux.endblock();
 112
 113         if (Compiler.GENERATEDEBUGHOOKS) {
 114             crhead.outputline("void debughook();");
 115             craux.outputline("void debughook() {}");
 116         }
 117         generatetypechecks(false);
 118         generate_computesizes();
 119         generatetypechecks(true);
 120         generate_recomputesizes();
 121         generatetypechecks(false);
 122         generate_updates();
 123         StructureGenerator sg=new StructureGenerator(state,this);
 124         sg.buildall();
 125         crhead.outputline("#endif");
 126     }
 127
 128     String ststate="state";
 129     String stmodel="model";
 130     String strepairtable="repairtable";
 131     String stleft="left";
 132     String stright="right";
 133     String stnew="newvalue";
 134
 135     private void generate_updates() {
 136         int count=0;
 137         CodeWriter crhead = new StandardCodeWriter(outputhead);
 138         CodeWriter craux = new StandardCodeWriter(outputaux);
 139         RelationDescriptor.prefix = "model->";
 140         SetDescriptor.prefix = "model->";
 141
 142         /* Rewrite globals */
 143
 144         for (Iterator it=this.state.stGlobals.descriptors();it.hasNext();) {
 145             VarDescriptor vd=(VarDescriptor)it.next();
 146             craux.outputline("#undef "+vd.getSafeSymbol());
 147             craux.outputline("#define "+vd.getSafeSymbol()+" "+ststate+"->"+vd.getSafeSymbol());
 148         }
 149
 150         for(Iterator it=termination.updatenodes.iterator();it.hasNext();) {
 151             GraphNode gn=(GraphNode) it.next();
 152             TermNode tn=(TermNode) gn.getOwner();
 153             MultUpdateNode mun=tn.getUpdate();
 154             boolean isrelation=(mun.getDescriptor() instanceof RelationDescriptor);
 155             if (togenerate.contains(gn))
 156             for (int i=0;i<mun.numUpdates();i++) {
 157                 UpdateNode un=mun.getUpdate(i);
 158                 String methodname=(String)updatenames.get(un);
 159
 160                 switch(mun.op) {
 161                 case MultUpdateNode.ADD:
 162                     if (isrelation) {
 163                         crhead.outputline("void "+methodname+"(struct "+name+"_state * " +ststate+",struct "+name+" * "+stmodel+", struct RepairHash * "+strepairtable+", int "+stleft+", int "+stright+");");
 164                         craux.outputline("void "+methodname+"(struct "+name+"_state * "+ ststate+", struct "+name+" * "+stmodel+", struct RepairHash * "+strepairtable+", int "+stleft+", int "+stright+")");
 165                     } else {
 166                         crhead.outputline("void "+methodname+"(struct "+name+"_state * "+ ststate+", struct "+name+" * "+stmodel+", struct RepairHash * "+strepairtable+", int "+stleft+");");
 167                         craux.outputline("void "+methodname+"(struct "+name+"_state * "+ststate+", struct "+name+" * "+stmodel+", struct RepairHash * "+strepairtable+", int "+stleft+")");
 168                     }
 169                     craux.startblock();
 170                     craux.startBuffer();
 171                     craux.addDeclaration("int","maybe");
 172                     craux.outputline("maybe=0;");
 173                     if (Compiler.GENERATEINSTRUMENT)
 174                         craux.outputline("updatecount++;");
 175
 176                     final SymbolTable st = un.getRule().getSymbolTable();
 177                     CodeWriter cr = new StandardCodeWriter(outputaux) {
 178                         public SymbolTable getSymbolTable() { return st; }
 179                     };
 180                     un.generate(cr, false, false, stleft,stright, null,this);
 181                     craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 182                     craux.emptyBuffer();
 183                     craux.endblock();
 184                     break;
 185                 case MultUpdateNode.REMOVE: {
 186                     Rule r=un.getRule();
 187                     String methodcall="void "+methodname+"(struct "+name+"_state * "+ststate+", struct "+name+" * "+stmodel+", struct RepairHash * "+strepairtable;
 188                     for(int j=0;j<r.numQuantifiers();j++) {
 189                         Quantifier q=r.getQuantifier(j);
 190                         if (q instanceof SetQuantifier) {
 191                             SetQuantifier sq=(SetQuantifier) q;
 192                             methodcall+=","+sq.getVar().getType().getGenerateType().getSafeSymbol()+" "+sq.getVar().getSafeSymbol();
 193                         } else if (q instanceof RelationQuantifier) {
 194                             RelationQuantifier rq=(RelationQuantifier) q;
 195
 196                             methodcall+=","+rq.x.getType().getGenerateType().getSafeSymbol()+" "+rq.x.getSafeSymbol();
 197                             methodcall+=","+rq.y.getType().getGenerateType().getSafeSymbol()+" "+rq.y.getSafeSymbol();
 198                         } else if (q instanceof ForQuantifier) {
 199                             ForQuantifier fq=(ForQuantifier) q;
 200                             methodcall+=",int "+fq.getVar().getSafeSymbol();
 201                         }
 202                     }
 203                     methodcall+=")";
 204                     crhead.outputline(methodcall+";");
 205                     craux.outputline(methodcall);
 206                     craux.startblock();
 207                     craux.startBuffer();
 208                     craux.addDeclaration("int","maybe");
 209                     craux.outputline("maybe=0;");
 210                     if (Compiler.GENERATEINSTRUMENT)
 211                         craux.outputline("updatecount++;");
 212                     final SymbolTable st2 = un.getRule().getSymbolTable();
 213                     CodeWriter cr2 = new StandardCodeWriter(outputaux) {
 214                         public SymbolTable getSymbolTable() { return st2; }
 215                     };
 216                     un.generate(cr2, true, false, null,null, null,this);
 217                     craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 218                     craux.emptyBuffer();
 219                     craux.endblock();
 220                 }
 221                     break;
 222                 case MultUpdateNode.MODIFY: {
 223                     Rule r=un.getRule();
 224                     String methodcall="void "+methodname+"(struct "+name+"_state * "+ststate+", struct "+name+" * "+stmodel+", struct RepairHash * "+strepairtable;
 225                     for(int j=0;j<r.numQuantifiers();j++) {
 226                         Quantifier q=r.getQuantifier(j);
 227                         if (q instanceof SetQuantifier) {
 228                             SetQuantifier sq=(SetQuantifier) q;
 229                             methodcall+=","+sq.getVar().getType().getGenerateType().getSafeSymbol()+" "+sq.getVar().getSafeSymbol();
 230                         } else if (q instanceof RelationQuantifier) {
 231                             RelationQuantifier rq=(RelationQuantifier) q;
 232
 233                             methodcall+=", "+rq.x.getType().getGenerateType().getSafeSymbol()+" "+rq.x.getSafeSymbol();
 234                             methodcall+=", "+rq.y.getType().getGenerateType().getSafeSymbol()+" "+rq.y.getSafeSymbol();
 235                         } else if (q instanceof ForQuantifier) {
 236                             ForQuantifier fq=(ForQuantifier) q;
 237                             methodcall+=", int "+fq.getVar().getSafeSymbol();
 238                         }
 239                     }
 240                     methodcall+=", int "+stleft+", int "+stright+", int "+stnew;
 241                     methodcall+=")";
 242                     crhead.outputline(methodcall+";");
 243                     craux.outputline(methodcall);
 244                     craux.startblock();
 245                     craux.startBuffer();
 246                     craux.outputline("int maybe=0;");
 247                     if (Compiler.GENERATEINSTRUMENT)
 248                         craux.outputline("updatecount++;");
 249                     final SymbolTable st2 = un.getRule().getSymbolTable();
 250                     CodeWriter cr2 = new StandardCodeWriter(outputaux) {
 251                         public SymbolTable getSymbolTable() { return st2; }
 252                     };
 253                     un.generate(cr2, false, true, stleft, stright, stnew, this);
 254                     craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 255                     craux.emptyBuffer();
 256                     craux.endblock();
 257                 }
 258                     break;
 259
 260                 default:
 261                     throw new Error("Nonimplement Update");
 262                 }
 263             }
 264         }
 265     }
 266
 267     private void generate_call() {
 268         CodeWriter cr = new StandardCodeWriter(outputrepair);
 269         VarDescriptor vdstate=VarDescriptor.makeNew("repairstate");
 270         cr.addDeclaration("struct "+ name+"_state *", vdstate.getSafeSymbol());
 271         cr.outputline(vdstate.getSafeSymbol()+"=allocate"+name+"_state();");
 272         Iterator globals=state.stGlobals.descriptors();
 273         while (globals.hasNext()) {
 274             VarDescriptor vd=(VarDescriptor) globals.next();
 275             cr.outputline(vdstate.getSafeSymbol()+"->"+vd.getSafeSymbol()+"=("+vd.getType().getGenerateType().getSafeSymbol()+")"+vd.getSafeSymbol()+";");
 276         }
 277         /* Insert repair here */
 278         cr.outputline("doanalysis("+vdstate.getSafeSymbol()+");");
 279         globals=state.stGlobals.descriptors();
 280         while (globals.hasNext()) {
 281             VarDescriptor vd=(VarDescriptor) globals.next();
 282             cr.outputline("*(("+vd.getType().getGenerateType().getSafeSymbol()+"*) &"+vd.getSafeSymbol()+")="+vdstate.getSafeSymbol()+"->"+vd.getSafeSymbol()+";");
 283         }
 284         cr.outputline("free"+name+"_state("+vdstate.getSafeSymbol()+");");
 285     }
 286
 287     private void generate_tokentable() {
 288         CodeWriter cr = new StandardCodeWriter(outputrepair);
 289         Iterator tokens = TokenLiteralExpr.tokens.keySet().iterator();
 290
 291         cr.outputline("");
 292         cr.outputline("/* Token values*/");
 293         cr.outputline("");
 294
 295         while (tokens.hasNext()) {
 296             Object token = tokens.next();
 297             cr.outputline("/* " + token.toString() + " = " + TokenLiteralExpr.tokens.get(token).toString()+"*/");
 298         }
 299
 300         cr.outputline("");
 301         cr.outputline("");
 302     }
 303
 304     private void generate_stateobject() {
 305         CodeWriter crhead = new StandardCodeWriter(outputhead);
 306         CodeWriter craux = new StandardCodeWriter(outputaux);
 307         crhead.outputline("struct "+name+"_state {");
 308         Iterator globals=state.stGlobals.descriptors();
 309         while (globals.hasNext()) {
 310             VarDescriptor vd=(VarDescriptor) globals.next();
 311             crhead.outputline(vd.getType().getGenerateType().getSafeSymbol()+" "+vd.getSafeSymbol()+";");
 312         }
 313         crhead.outputline("};");
 314         crhead.outputline("struct "+name+"_state * allocate"+name+"_state();");
 315         craux.outputline("struct "+name+"_state * allocate"+name+"_state()");
 316         craux.startblock();
 317         craux.outputline("return (struct "+name+"_state *) malloc(sizeof(struct "+name+"_state));");
 318         craux.endblock();
 319
 320         crhead.outputline("void free"+name+"_state(struct "+name+"_state *);");
 321         craux.outputline("void free"+name+"_state(struct "+name+"_state * thisvar)");
 322         craux.startblock();
 323         craux.outputline("free(thisvar);");
 324         craux.endblock();
 325
 326         crhead.outputline("void "+name+"_statecomputesizes(struct "+name+"_state * ,int *,int **);");
 327         crhead.outputline("void "+name+"_staterecomputesizes(struct "+name+"_state *);");
 328     }
 329
 330     private void generate_computesizes() {
 331         int max=TypeDescriptor.counter;
 332         TypeDescriptor[] tdarray=new TypeDescriptor[max];
 333         for(Iterator it=state.stTypes.descriptors();it.hasNext();) {
 334             TypeDescriptor ttd=(TypeDescriptor)it.next();
 335             tdarray[ttd.getId()]=ttd;
 336         }
 337         final SymbolTable st = state.stGlobals;
 338         CodeWriter cr = new StandardCodeWriter(outputaux) {
 339                 public SymbolTable getSymbolTable() { return st; }
 340             };
 341
 342         cr.outputline("void "+name+"_statecomputesizes(struct "+name+"_state * thisvar,int *sizearray,int **numele)");
 343         cr.startblock();
 344         cr.startBuffer();
 345         cr.addDeclaration("int","maybe");
 346         cr.outputline("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             cr.outputline("sizearray["+i+"]="+vd.getSafeSymbol()+";");
 353         }
 354         for(int i=0;i<max;i++) {
 355             TypeDescriptor td=tdarray[i];
 356             if (td instanceof StructureTypeDescriptor) {
 357                 StructureTypeDescriptor std=(StructureTypeDescriptor) td;
 358                 for(int j=0;j<std.fieldlist.size();j++) {
 359                     FieldDescriptor fd=(FieldDescriptor)std.fieldlist.get(j);
 360                     if (fd instanceof ArrayDescriptor) {
 361                         ArrayDescriptor ad=(ArrayDescriptor)fd;
 362                         Expr index=ad.getIndexBound();
 363                         VarDescriptor vd=VarDescriptor.makeNew("index");
 364                         index.generate(cr,vd);
 365                         cr.outputline("numele["+i+"]["+j+"]="+vd.getSafeSymbol()+";");
 366                     }
 367                 }
 368             }
 369         }
 370         cr.outputline("if (maybe) printf(\"BAD ERROR\");");
 371         cr.emptyBuffer();
 372         cr.endblock();
 373     }
 374
 375     private void generate_recomputesizes() {
 376         int max=TypeDescriptor.counter;
 377         TypeDescriptor[] tdarray=new TypeDescriptor[max];
 378         for(Iterator it=state.stTypes.descriptors();it.hasNext();) {
 379             TypeDescriptor ttd=(TypeDescriptor)it.next();
 380             tdarray[ttd.getId()]=ttd;
 381         }
 382         final SymbolTable st = state.stGlobals;
 383         CodeWriter cr = new StandardCodeWriter(outputaux) {
 384                 public SymbolTable getSymbolTable() { return st; }
 385             };
 386         cr.outputline("void "+name+"_staterecomputesizes(struct "+name+"_state * thisvar)");
 387         cr.startblock();
 388         cr.startBuffer();
 389         cr.addDeclaration("int","maybe");
 390         cr.outputline("maybe=0;");
 391         for(int i=0;i<max;i++) {
 392             TypeDescriptor td=tdarray[i];
 393             Expr size=td.getSizeExpr();
 394             VarDescriptor vd=VarDescriptor.makeNew("size");
 395             size.generate(cr,vd);
 396         }
 397         for(int i=0;i<max;i++) {
 398             TypeDescriptor td=tdarray[i];
 399             if (td instanceof StructureTypeDescriptor) {
 400                 StructureTypeDescriptor std=(StructureTypeDescriptor) td;
 401                 for(int j=0;j<std.fieldlist.size();j++) {
 402                     FieldDescriptor fd=(FieldDescriptor)std.fieldlist.get(j);
 403                     if (fd instanceof ArrayDescriptor) {
 404                         ArrayDescriptor ad=(ArrayDescriptor)fd;
 405                         Expr index=ad.getIndexBound();
 406                         VarDescriptor vd=VarDescriptor.makeNew("index");
 407                         index.generate(cr,vd);
 408                     }
 409                 }
 410             }
 411         }
 412         cr.outputline("if (maybe) printf(\"BAD ERROR\");");
 413         cr.emptyBuffer();
 414         cr.endblock();
 415     }
 416
 417
 418     private void generate_hashtables() {
 419         CodeWriter craux = new StandardCodeWriter(outputaux);
 420         CodeWriter crhead = new StandardCodeWriter(outputhead);
 421         crhead.outputline("#ifndef "+name+"_h");
 422         crhead.outputline("#define "+name+"_h");
 423         crhead.outputline("#include \"SimpleHash.h\"");
 424         crhead.outputline("#include \"instrument.h\"");
 425         crhead.outputline("#include <stdio.h>");
 426         crhead.outputline("#include <stdlib.h>");
 427         crhead.outputline("struct "+name+" * allocate"+name+"();");
 428         crhead.outputline("void free"+name+"(struct "+name+" *);");
 429         crhead.outputline("struct "+name+" {");
 430         craux.outputline("#include \""+headername+"\"");
 431         craux.outputline("#include \"size.h\"");
 432         if (Compiler.TIME) {
 433             craux.outputline("#include <sys/time.h>");
 434         }
 435         if (Compiler.ALLOCATECPLUSPLUS) {
 436             for(Iterator it=state.stTypes.descriptors();it.hasNext();) {
 437                 TypeDescriptor td=(TypeDescriptor)it.next();
 438                 if (td instanceof StructureTypeDescriptor) {
 439                     if (((StructureTypeDescriptor)td).size()>0) {
 440                         FieldDescriptor fd=((StructureTypeDescriptor)td).get(0);
 441                         if (fd.getSymbol().startsWith("_vptr_")) {
 442                             String vtable="_ZTV";
 443                             vtable+=td.getSymbol().length();
 444                             vtable+=td.getSymbol();
 445                             craux.outputline("extern void * "+vtable+";");
 446                         }
 447                     }
 448                 }
 449             }
 450         }
 451         craux.outputline("struct "+ name+"* allocate"+name+"()");
 452         craux.startblock();
 453         craux.outputline("/* creating hashtables */");
 454
 455         /* build sets */
 456         Iterator sets = state.stSets.descriptors();
 457         craux.addDeclaration("struct "+name+"*", "thisvar");
 458         craux.outputline("thisvar=(struct "+name+"*) malloc(sizeof(struct "+name+"));");
 459
 460         /* first pass create all the hash tables */
 461         while (sets.hasNext()) {
 462             SetDescriptor set = (SetDescriptor) sets.next();
 463             crhead.outputline("struct SimpleHash* " + set.getJustSafeSymbol() + "_hash;");
 464             craux.outputline(set.getSafeSymbol() + "_hash = noargallocateSimpleHash();");
 465         }
 466
 467         /* second pass build relationships between hashtables */
 468         sets = state.stSets.descriptors();
 469
 470         while (sets.hasNext()) {
 471             SetDescriptor set = (SetDescriptor) sets.next();
 472             Iterator subsets = set.subsets();
 473
 474             while (subsets.hasNext()) {
 475                 SetDescriptor subset = (SetDescriptor) subsets.next();
 476                 craux.outputline("SimpleHashaddParent("+subset.getSafeSymbol() +"_hash ,"+ set.getSafeSymbol() + "_hash);");
 477             }
 478         }
 479
 480         /* build relations */
 481         Iterator relations = state.stRelations.descriptors();
 482
 483         /* first pass create all the hash tables */
 484         while (relations.hasNext()) {
 485             RelationDescriptor relation = (RelationDescriptor) relations.next();
 486
 487             if (relation.testUsage(RelationDescriptor.IMAGE)) {
 488                 crhead.outputline("struct SimpleHash* " + relation.getJustSafeSymbol() + "_hash;");
 489                 craux.outputline(relation.getSafeSymbol() + "_hash = noargallocateSimpleHash();");
 490             }
 491
 492             if (relation.testUsage(RelationDescriptor.INVIMAGE)) {
 493                 crhead.outputline("struct SimpleHash* " + relation.getJustSafeSymbol() + "_hashinv;");
 494                 craux.outputline(relation.getSafeSymbol() + "_hashinv = noargallocateSimpleHash();");
 495             }
 496         }
 497         craux.outputline("return thisvar;");
 498         craux.endblock();
 499         crhead.outputline("};");
 500         craux.outputline("void free"+name+"(struct "+ name +"* thisvar)");
 501         craux.startblock();
 502         craux.outputline("/* deleting hashtables */");
 503
 504         /* build destructor */
 505         sets = state.stSets.descriptors();
 506
 507         /* first pass create all the hash tables */
 508         while (sets.hasNext()) {
 509             SetDescriptor set = (SetDescriptor) sets.next();
 510             craux.outputline("freeSimpleHash("+set.getSafeSymbol() + "_hash);");
 511         }
 512
 513         /* destroy relations */
 514         relations = state.stRelations.descriptors();
 515
 516         /* first pass create all the hash tables */
 517         while (relations.hasNext()) {
 518             RelationDescriptor relation = (RelationDescriptor) relations.next();
 519
 520             if (relation.testUsage(RelationDescriptor.IMAGE)) {
 521                 craux.outputline("freeSimpleHash("+relation.getSafeSymbol() + "_hash);");
 522             }
 523
 524             if (relation.testUsage(RelationDescriptor.INVIMAGE)) {
 525                 craux.outputline("freeSimpleHash(" + relation.getSafeSymbol() + "_hashinv);");
 526             }
 527         }
 528         craux.outputline("free(thisvar);");
 529         craux.endblock();
 530     }
 531
 532     private void generate_start() {
 533         CodeWriter crhead = new StandardCodeWriter(outputhead);
 534         CodeWriter craux = new StandardCodeWriter(outputaux);
 535         oldmodel=VarDescriptor.makeNew("oldmodel");
 536         newmodel=VarDescriptor.makeNew("newmodel");
 537         worklist=VarDescriptor.makeNew("worklist");
 538         goodflag=VarDescriptor.makeNew("goodflag");
 539         repairtable=VarDescriptor.makeNew("repairtable");
 540
 541         if (Compiler.GENERATEINSTRUMENT) {
 542             craux.outputline("int updatecount;");
 543             craux.outputline("int rebuildcount;");
 544             craux.outputline("int abstractcount;");
 545         }
 546
 547         crhead.outputline("void doanalysis(struct "+name+"_state *);");
 548         craux.outputline("void doanalysis(struct "+name+"_state * thisvar)");
 549         craux.startblock();
 550         craux.outputline("int highmark;"); /* This declaration is special...need it to be first */
 551         craux.startBuffer();
 552
 553         if (Compiler.TIME) {
 554             craux.outputline("struct timeval _begin_time,_end_time;");
 555             craux.outputline("gettimeofday(&_begin_time,NULL);");
 556         }
 557         if (Compiler.GENERATEINSTRUMENT) {
 558             craux.outputline("updatecount=0;");
 559             craux.outputline("rebuildcount=0;");
 560             craux.outputline("abstractcount=0;");
 561         }
 562
 563
 564         craux.addDeclaration("struct "+name+ " * ",oldmodel.getSafeSymbol());
 565         craux.outputline(oldmodel.getSafeSymbol()+"=0;");
 566         craux.addDeclaration("struct WorkList * ",worklist.getSafeSymbol());
 567         craux.outputline(worklist.getSafeSymbol()+" = allocateWorkList();");
 568         craux.addDeclaration("struct RepairHash * ",repairtable.getSafeSymbol());
 569         craux.outputline(repairtable.getSafeSymbol()+"=0;");
 570         craux.outputline("initializestack(&highmark);");
 571         craux.outputline("computesizes(thisvar);");
 572         craux.outputline(name+"_staterecomputesizes(thisvar);");
 573         craux.outputline("while (1)");
 574         craux.startblock();
 575         craux.addDeclaration("struct "+name+ " * ",newmodel.getSafeSymbol());
 576         craux.outputline(newmodel.getSafeSymbol()+"=allocate"+name+"();");
 577         craux.outputline("WorkListreset("+worklist.getSafeSymbol()+");");
 578         if (Compiler.GENERATEINSTRUMENT)
 579             craux.outputline("rebuildcount++;");
 580     }
 581
 582     private void generate_teardown() {
 583         CodeWriter cr = new StandardCodeWriter(outputaux);
 584         cr.endblock();
 585         if (Compiler.TIME) {
 586             cr.outputline("gettimeofday(&_end_time,NULL);");
 587             cr.outputline("printf(\"time=%ld uS\\n\",(_end_time.tv_sec-_begin_time.tv_sec)*1000000+_end_time.tv_usec-_begin_time.tv_usec);");
 588         }
 589
 590         if (Compiler.GENERATEINSTRUMENT) {
 591             cr.outputline("printf(\"updatecount=%d\\n\",updatecount);");
 592             cr.outputline("printf(\"rebuildcount=%d\\n\",rebuildcount);");
 593             cr.outputline("printf(\"abstractcount=%d\\n\",abstractcount);");
 594         }
 595
 596     }
 597
 598     private void generate_print() {
 599
 600         final SymbolTable st = new SymbolTable();
 601
 602         CodeWriter cr = new StandardCodeWriter(outputaux) {
 603                 public SymbolTable getSymbolTable() { return st; }
 604             };
 605
 606         cr.outputline("/* printing sets!*/");
 607         cr.outputline("printf(\"\\n\\nPRINTING SETS AND RELATIONS\\n\");");
 608
 609         Iterator setiterator = state.stSets.descriptors();
 610         while (setiterator.hasNext()) {
 611             SetDescriptor sd = (SetDescriptor) setiterator.next();
 612             if (sd.getSymbol().equals("int") || sd.getSymbol().equals("token")) {
 613                 continue;
 614             }
 615
 616             String setname = sd.getSafeSymbol();
 617
 618             cr.startblock();
 619             cr.outputline("/* printing set " + setname+"*/");
 620             cr.outputline("printf(\"\\nPrinting set " + sd.getSymbol() + " - %d elements \\n\", SimpleHashcountset("+setname+"_hash));");
 621             cr.addDeclaration("struct SimpleIterator","__setiterator");
 622             cr.outputline("SimpleHashiterator("+setname+"_hash,&__setiterator);");
 623             cr.outputline("while (hasNext(&__setiterator))");
 624             cr.startblock();
 625             cr.addDeclaration("int","__setval");
 626             cr.outputline("__setval = (int) next(&__setiterator);");
 627
 628             TypeDescriptor td = sd.getType();
 629             if (td instanceof StructureTypeDescriptor) {
 630                 StructureTypeDescriptor std = (StructureTypeDescriptor) td;
 631                 VarDescriptor vd = new VarDescriptor ("__setval", "__setval", td, false);
 632                 std.generate_printout(cr, vd);
 633             } else { // Missing type descriptor or reserved type, just print int
 634                 cr.outputline("printf(\"<%d> \", __setval);");
 635             }
 636
 637
 638             cr.endblock();
 639             cr.endblock();
 640         }
 641
 642         cr.outputline("printf(\"\\n\\n------------------- END PRINTING\\n\");");
 643     }
 644
 645     Set ruleset=null;
 646     private void generate_rules() {
 647         /* first we must sort the rules */
 648         RelationDescriptor.prefix = newmodel.getSafeSymbol()+"->";
 649         SetDescriptor.prefix = newmodel.getSafeSymbol()+"->";
 650         System.out.println("SCC="+(mrd.numSCC()-1));
 651         for(int sccindex=0;sccindex<mrd.numSCC();sccindex++) {
 652             ruleset=mrd.getSCC(sccindex);
 653             boolean needworklist=mrd.hasCycle(sccindex);
 654
 655             if (!needworklist) {
 656                 Iterator iterator_rs = ruleset.iterator();
 657                 while (iterator_rs.hasNext()) {
 658                     Rule rule = (Rule) iterator_rs.next();
 659                     if (rule.getnogenerate())
 660                         continue;
 661                     {
 662                         final SymbolTable st = rule.getSymbolTable();
 663                         CodeWriter cr = new StandardCodeWriter(outputaux) {
 664                                 public SymbolTable getSymbolTable() { return st; }
 665                             };
 666                         InvariantValue ivalue=new InvariantValue();
 667                         cr.setInvariantValue(ivalue);
 668
 669                         cr.outputline("/* build " +escape(rule.toString())+"*/");
 670                         cr.startblock();
 671                         cr.addDeclaration("int","maybe");
 672                         cr.outputline("maybe=0;");
 673
 674                         Expr ruleexpr=rule.getGuardExpr();
 675                         HashSet invariantvars=new HashSet();
 676                         Set invariants=ruleexpr.findInvariants(invariantvars);
 677
 678                         if ((ruleexpr instanceof BooleanLiteralExpr)&&
 679                             ((BooleanLiteralExpr)ruleexpr).getValue()) {
 680                             if (rule.getInclusion() instanceof SetInclusion) {
 681                                 invariants.addAll(((SetInclusion)rule.getInclusion()).getExpr().findInvariants(invariantvars));
 682                             } else if (rule.getInclusion() instanceof RelationInclusion) {
 683                                 invariants.addAll(((RelationInclusion)rule.getInclusion()).getLeftExpr().findInvariants(invariantvars));
 684                                 invariants.addAll(((RelationInclusion)rule.getInclusion()).getRightExpr().findInvariants(invariantvars));
 685                             }
 686                         }
 687                         ListIterator quantifiers = rule.quantifiers();
 688                         while (quantifiers.hasNext()) {
 689                             Quantifier quantifier = (Quantifier) quantifiers.next();
 690                             if (quantifier instanceof ForQuantifier) {
 691                                 ForQuantifier fq=(ForQuantifier)quantifier;
 692                                 invariants.addAll(fq.lower.findInvariants(invariantvars));
 693                                 invariants.addAll(fq.upper.findInvariants(invariantvars));
 694                             }
 695                         }
 696
 697                         int openparencount=0;
 698                         for(Iterator invit=invariants.iterator();invit.hasNext();) {
 699                             Expr invexpr=(Expr)invit.next();
 700                             VarDescriptor tmpvd=VarDescriptor.makeNew("tmpvar");
 701                             VarDescriptor maybevd=VarDescriptor.makeNew("maybevar");
 702                             invexpr.generate(cr,tmpvd);
 703                             cr.addDeclaration("int ",maybevd.getSafeSymbol());
 704                             cr.outputline(maybevd.getSafeSymbol()+"=maybe;");
 705                             cr.outputline("maybe=0;");
 706                             ivalue.assignPair(invexpr,tmpvd,maybevd);
 707                             openparencount++;
 708                             cr.startblock();
 709                         }
 710                         quantifiers = rule.quantifiers();
 711                         while (quantifiers.hasNext()) {
 712                             Quantifier quantifier = (Quantifier) quantifiers.next();
 713                             quantifier.generate_open(cr);
 714                         }
 715
 716                         /* pretty print! */
 717                         cr.output("/*");
 718                         rule.getGuardExpr().prettyPrint(cr);
 719                         cr.outputline("*/");
 720
 721                         /* now we have to generate the guard test */
 722                         VarDescriptor guardval = VarDescriptor.makeNew();
 723                         rule.getGuardExpr().generate(cr, guardval);
 724                         cr.outputline("if (" + guardval.getSafeSymbol() + ")");
 725                         cr.startblock();
 726
 727                         /* now we have to generate the inclusion code */
 728                         currentrule=rule;
 729                         rule.getInclusion().generate(cr);
 730                         cr.endblock();
 731                         while (quantifiers.hasPrevious()) {
 732                             Quantifier quantifier = (Quantifier) quantifiers.previous();
 733                             cr.endblock();
 734                         }
 735                         cr.endblock();
 736                         while((openparencount--)>0)
 737                             cr.endblock();
 738                         cr.outputline("");
 739                         cr.outputline("");
 740                     }
 741                 }
 742             } else {
 743                 CodeWriter cr2 = new StandardCodeWriter(outputaux);
 744
 745                 for(Iterator initialworklist=ruleset.iterator();initialworklist.hasNext();) {
 746                     /** Construct initial worklist set */
 747                     Rule rule=(Rule)initialworklist.next();
 748                     cr2.outputline("WorkListadd("+worklist.getSafeSymbol()+","+rule.getNum()+",-1,0,0);");
 749                 }
 750
 751                 cr2.outputline("while (WorkListhasMoreElements("+worklist.getSafeSymbol()+"))");
 752                 cr2.startblock();
 753                 VarDescriptor idvar=VarDescriptor.makeNew("id");
 754                 cr2.addDeclaration("int ",idvar.getSafeSymbol());
 755                 cr2.outputline(idvar.getSafeSymbol()+"=WorkListgetid("+worklist.getSafeSymbol()+");");
 756
 757                 String elseladder = "if";
 758
 759                 Iterator iterator_rules = ruleset.iterator();
 760                 while (iterator_rules.hasNext()) {
 761
 762                     Rule rule = (Rule) iterator_rules.next();
 763                     int dispatchid = rule.getNum();
 764
 765                     {
 766                         final SymbolTable st = rule.getSymbolTable();
 767                         CodeWriter cr = new StandardCodeWriter(outputaux) {
 768                                 public SymbolTable getSymbolTable() { return st; }
 769                             };
 770
 771                         cr.indent();
 772                         cr.outputline(elseladder + " ("+idvar.getSafeSymbol()+" == " + dispatchid + ")");
 773                         cr.startblock();
 774                         cr.addDeclaration("int","maybe");
 775                         cr.outputline("maybe=0;");
 776                         VarDescriptor typevar=VarDescriptor.makeNew("type");
 777                         VarDescriptor leftvar=VarDescriptor.makeNew("left");
 778                         VarDescriptor rightvar=VarDescriptor.makeNew("right");
 779                         cr.addDeclaration("int",typevar.getSafeSymbol());
 780                         cr.outputline(typevar.getSafeSymbol()+"= WorkListgettype("+worklist.getSafeSymbol()+");");
 781                         cr.addDeclaration("int",leftvar.getSafeSymbol());
 782                         cr.outputline(leftvar.getSafeSymbol()+"= WorkListgetlvalue("+worklist.getSafeSymbol()+");");
 783                         cr.addDeclaration("int",rightvar.getSafeSymbol());
 784                         cr.outputline(rightvar.getSafeSymbol()+"= WorkListgetrvalue("+worklist.getSafeSymbol()+");");
 785                         cr.outputline("/* build " +escape(rule.toString())+"*/");
 786
 787
 788                         for (int j=0;j<rule.numQuantifiers();j++) {
 789                             Quantifier quantifier = rule.getQuantifier(j);
 790                             quantifier.generate_open(cr, typevar.getSafeSymbol(),j,leftvar.getSafeSymbol(),rightvar.getSafeSymbol());
 791                         }
 792
 793                         /* pretty print! */
 794                         cr.output("/*");
 795
 796                         rule.getGuardExpr().prettyPrint(cr);
 797                         cr.outputline("*/");
 798
 799                         /* now we have to generate the guard test */
 800
 801                         VarDescriptor guardval = VarDescriptor.makeNew();
 802                         rule.getGuardExpr().generate(cr, guardval);
 803
 804                         cr.outputline("if (" + guardval.getSafeSymbol() + ")");
 805                         cr.startblock();
 806
 807                         /* now we have to generate the inclusion code */
 808                         currentrule=rule;
 809                         rule.getInclusion().generate(cr);
 810                         cr.endblock();
 811
 812                         for (int j=0;j<rule.numQuantifiers();j++) {
 813                             cr.endblock();
 814                         }
 815
 816                         // close startblocks generated by DotExpr memory checks
 817                         //DotExpr.generate_memory_endblocks(cr);
 818
 819                         cr.endblock(); // end else-if WORKLIST ladder
 820
 821                         elseladder = "else if";
 822                     }
 823                 }
 824                 cr2.outputline("else");
 825                 cr2.startblock();
 826                 cr2.outputline("printf(\"VERY BAD !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\\n\\n\");");
 827                 cr2.outputline("exit(1);");
 828                 cr2.endblock();
 829                 // end block created for worklist
 830                 cr2.outputline("WorkListpop("+worklist.getSafeSymbol()+");");
 831                 cr2.endblock();
 832             }
 833         }
 834     }
 835
 836     public static String escape(String s) {
 837         String newstring="";
 838         for(int i=0;i<s.length();i++) {
 839             char c=s.charAt(i);
 840             if (c=='"')
 841                 newstring+="\"";
 842             else
 843                 newstring+=c;
 844         }
 845         return newstring;
 846     }
 847
 848     private void generate_checks() {
 849         /* do constraint checks */
 850         Iterator i;
 851         if (Compiler.REPAIR)
 852             i=termination.constraintdependence.computeOrdering().iterator();
 853         else
 854             i=state.vConstraints.iterator();
 855         for (; i.hasNext();) {
 856             Constraint constraint;
 857             if (Compiler.REPAIR)
 858                 constraint= (Constraint) ((GraphNode)i.next()).getOwner();
 859             else
 860                 constraint=(Constraint)i.next();
 861
 862             {
 863                 final SymbolTable st = constraint.getSymbolTable();
 864                 CodeWriter cr = new StandardCodeWriter(outputaux);
 865                 cr.pushSymbolTable(constraint.getSymbolTable());
 866
 867                 cr.outputline("/* checking " + escape(constraint.toString())+"*/");
 868                 cr.startblock();
 869
 870                 ListIterator quantifiers = constraint.quantifiers();
 871
 872                 while (quantifiers.hasNext()) {
 873                     Quantifier quantifier = (Quantifier) quantifiers.next();
 874                     quantifier.generate_open(cr);
 875                 }
 876
 877                 cr.addDeclaration("int","maybe");
 878                 cr.outputline("maybe = 0;");
 879
 880                 /* now we have to generate the guard test */
 881
 882                 VarDescriptor constraintboolean = VarDescriptor.makeNew("constraintboolean");
 883                 constraint.getLogicStatement().generate(cr, constraintboolean);
 884
 885                 cr.outputline("if (maybe)");
 886                 cr.startblock();
 887                 cr.outputline("printf(\"maybe fail " +  escape(constraint.toString()) + ". \\n\");");
 888                 //cr.outputline("exit(1);");
 889                 cr.endblock();
 890
 891                 cr.outputline("else if (!" + constraintboolean.getSafeSymbol() + ")");
 892                 cr.startblock();
 893                 if (!Compiler.REPAIR||Compiler.GENERATEDEBUGHOOKS)
 894                     cr.outputline("printf(\"fail " + escape(constraint.toString()) + ". \\n\");");
 895
 896                 if (Compiler.REPAIR) {
 897                 /* Do repairs */
 898                 /* Build new repair table */
 899
 900                 cr.outputline("if ("+repairtable.getSafeSymbol()+")");
 901                 cr.outputline("freeRepairHash("+repairtable.getSafeSymbol()+");");
 902                 cr.outputline(repairtable.getSafeSymbol()+"=noargallocateRepairHash();");
 903
 904                 if (Compiler.GENERATEDEBUGHOOKS)
 905                     cr.outputline("debughook();");
 906                 /* Compute cost of each repair */
 907                 VarDescriptor mincost=VarDescriptor.makeNew("mincost");
 908                 VarDescriptor mincostindex=VarDescriptor.makeNew("mincostindex");
 909                 Vector dnfconst=new Vector();
 910                 dnfconst.addAll((Set)termination.conjunctionmap.get(constraint));
 911
 912                 if (dnfconst.size()<=1) {
 913                     cr.addDeclaration("int",mincostindex.getSafeSymbol());
 914                     cr.outputline(mincostindex.getSafeSymbol()+"=0;");
 915                 }
 916                 if (dnfconst.size()>1) {
 917                     cr.addDeclaration("int",mincostindex.getSafeSymbol());
 918                     boolean first=true;
 919                     for(int j=0;j<dnfconst.size();j++) {
 920                         GraphNode gn=(GraphNode)dnfconst.get(j);
 921                         Conjunction conj=((TermNode)gn.getOwner()).getConjunction();
 922                         if (removed.contains(gn))
 923                             continue;
 924
 925                         VarDescriptor costvar;
 926                         if (first) {
 927                             costvar=mincost;
 928                         } else
 929                             costvar=VarDescriptor.makeNew("cost");
 930                         for(int k=0;k<conj.size();k++) {
 931                             DNFPredicate dpred=conj.get(k);
 932                             Predicate p=dpred.getPredicate();
 933                             boolean negate=dpred.isNegated();
 934                             VarDescriptor predvalue=VarDescriptor.makeNew("Predicatevalue");
 935                             p.generate(cr,predvalue);
 936                             if (k==0) {
 937                                 cr.addDeclaration("int",costvar.getSafeSymbol());
 938                                 cr.outputline(costvar.getSafeSymbol()+"=0;");
 939                             }
 940                             if (negate)
 941                                 cr.outputline("if (maybe||"+predvalue.getSafeSymbol()+")");
 942                             else
 943                                 cr.outputline("if (maybe||!"+predvalue.getSafeSymbol()+")");
 944                             cr.outputline(costvar.getSafeSymbol()+"+="+cost.getCost(dpred)+";");
 945                         }
 946
 947                         if(!first) {
 948                             cr.outputline("if ("+costvar.getSafeSymbol()+"<"+mincost.getSafeSymbol()+")");
 949                             cr.startblock();
 950                             cr.outputline(mincost.getSafeSymbol()+"="+costvar.getSafeSymbol()+";");
 951                             cr.outputline(mincostindex.getSafeSymbol()+"="+j+";");
 952                             cr.endblock();
 953                         } else
 954                             cr.outputline(mincostindex.getSafeSymbol()+"="+j+";");
 955                         first=false;
 956                     }
 957                 }
 958                 cr.outputline("switch("+mincostindex.getSafeSymbol()+")");
 959                 cr.startblock();
 960                 for(int j=0;j<dnfconst.size();j++) {
 961                     GraphNode gn=(GraphNode)dnfconst.get(j);
 962                     Conjunction conj=((TermNode)gn.getOwner()).getConjunction();
 963                     if (removed.contains(gn))
 964                         continue;
 965                     cr.outputline("case "+j+":");
 966                     cr.startblock();
 967                     for(int k=0;k<conj.size();k++) {
 968                         DNFPredicate dpred=conj.get(k);
 969                         Predicate p=dpred.getPredicate();
 970                         boolean negate=dpred.isNegated();
 971                         VarDescriptor predvalue=VarDescriptor.makeNew("Predicatevalue");
 972                         p.generate(cr,predvalue);
 973                         if (negate)
 974                             cr.outputline("if (maybe||"+predvalue.getSafeSymbol()+")");
 975                         else
 976                             cr.outputline("if (maybe||!"+predvalue.getSafeSymbol()+")");
 977                         cr.startblock();
 978                         if (Compiler.GENERATEINSTRUMENT)
 979                             cr.outputline("abstractcount++;");
 980                         if (p instanceof InclusionPredicate)
 981                             generateinclusionrepair(conj,dpred, cr);
 982                         else if (p instanceof ExprPredicate) {
 983                             ExprPredicate ep=(ExprPredicate)p;
 984                             if (ep.getType()==ExprPredicate.SIZE)
 985                                 generatesizerepair(conj,dpred,cr);
 986                             else if (ep.getType()==ExprPredicate.COMPARISON)
 987                                 generatecomparisonrepair(conj,dpred,cr);
 988                         } else throw new Error("Unrecognized Predicate");
 989                         cr.endblock();
 990                     }
 991                     /* Update model */
 992                     cr.endblock();
 993                     cr.outputline("break;");
 994                 }
 995                 cr.endblock();
 996
 997                 cr.outputline("if ("+oldmodel.getSafeSymbol()+")");
 998                 cr.outputline("free"+name+"("+oldmodel.getSafeSymbol()+");");
 999                 cr.outputline(oldmodel.getSafeSymbol()+"="+newmodel.getSafeSymbol()+";");
1000                 cr.outputline("goto rebuild;");  /* Rebuild model and all */
1001                 }
1002                 cr.endblock();
1003
1004                 while (quantifiers.hasPrevious()) {
1005                     Quantifier quantifier = (Quantifier) quantifiers.previous();
1006                     cr.endblock();
1007                 }
1008                 cr.endblock();
1009                 cr.outputline("");
1010                 cr.outputline("");
1011             }
1012         }
1013         CodeWriter cr = new StandardCodeWriter(outputaux);
1014         cr.startblock();
1015         cr.outputline("if ("+repairtable.getSafeSymbol()+")");
1016         cr.outputline("freeRepairHash("+repairtable.getSafeSymbol()+");");
1017         cr.outputline("if ("+oldmodel.getSafeSymbol()+")");
1018         cr.outputline("free"+name+"("+oldmodel.getSafeSymbol()+");");
1019         cr.outputline("free"+name+"("+newmodel.getSafeSymbol()+");");
1020         cr.outputline("freeWorkList("+worklist.getSafeSymbol()+");");
1021         cr.outputline("resettypemap();");
1022         cr.outputline("break;");
1023         cr.endblock();
1024         cr.outputline("rebuild:");
1025         cr.outputline(";");
1026     }
1027
1028     private MultUpdateNode getmultupdatenode(Conjunction conj, DNFPredicate dpred, int repairtype) {
1029         Set nodes=getmultupdatenodeset(conj,dpred,repairtype);
1030         Iterator it=nodes.iterator();
1031         if (it.hasNext())
1032             return (MultUpdateNode)it.next();
1033         else
1034             return null;
1035     }
1036
1037     private Set getmultupdatenodeset(Conjunction conj, DNFPredicate dpred, int repairtype) {
1038         HashSet hs=new HashSet();
1039         GraphNode gn=(GraphNode) termination.conjtonodemap.get(conj);
1040         for(Iterator edgeit=gn.edges();edgeit.hasNext();) {
1041             GraphNode gn2=((GraphNode.Edge) edgeit.next()).getTarget();
1042             TermNode tn2=(TermNode)gn2.getOwner();
1043             if (tn2.getType()==TermNode.ABSTRACT) {
1044                 AbstractRepair ar=tn2.getAbstract();
1045                 if (((repairtype==-1)||(ar.getType()==repairtype))&&
1046                     ar.getPredicate()==dpred) {
1047                     for(Iterator edgeit2=gn2.edges();edgeit2.hasNext();) {
1048                         GraphNode gn3=((GraphNode.Edge) edgeit2.next()).getTarget();
1049                         if (!removed.contains(gn3)) {
1050                             TermNode tn3=(TermNode)gn3.getOwner();
1051                             if (tn3.getType()==TermNode.UPDATE) {
1052                                 hs.add(tn3.getUpdate());
1053                             }
1054                         }
1055                     }
1056                 }
1057             }
1058         }
1059         return hs;
1060     }
1061
1062     private AbstractRepair getabstractrepair(Conjunction conj, DNFPredicate dpred, int repairtype) {
1063         HashSet hs=new HashSet();
1064         MultUpdateNode mun=null;
1065         GraphNode gn=(GraphNode) termination.conjtonodemap.get(conj);
1066         for(Iterator edgeit=gn.edges();(mun==null)&&edgeit.hasNext();) {
1067             GraphNode gn2=((GraphNode.Edge) edgeit.next()).getTarget();
1068             TermNode tn2=(TermNode)gn2.getOwner();
1069             if (tn2.getType()==TermNode.ABSTRACT) {
1070                 AbstractRepair ar=tn2.getAbstract();
1071                 if (((repairtype==-1)||(ar.getType()==repairtype))&&
1072                     ar.getPredicate()==dpred) {
1073                     return ar;
1074                 }
1075             }
1076         }
1077         return null;
1078     }
1079
1080
1081     /** Generates abstract (and concrete) repair for a comparison */
1082
1083     private void generatecomparisonrepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr){
1084         Set updates=getmultupdatenodeset(conj,dpred,AbstractRepair.MODIFYRELATION);
1085         AbstractRepair ar=getabstractrepair(conj,dpred,AbstractRepair.MODIFYRELATION);
1086         MultUpdateNode munmodify=null;
1087         MultUpdateNode munadd=null;
1088         MultUpdateNode munremove=null;
1089         for(Iterator it=updates.iterator();it.hasNext();) {
1090             MultUpdateNode mun=(MultUpdateNode)it.next();
1091             if (mun.getType()==MultUpdateNode.ADD) {
1092                 munadd=mun;
1093             } else if (mun.getType()==MultUpdateNode.REMOVE) {
1094                 munremove=mun;
1095             } else if (mun.getType()==MultUpdateNode.MODIFY) {
1096                 munmodify=mun;
1097             }
1098         }
1099
1100         ExprPredicate ep=(ExprPredicate)dpred.getPredicate();
1101         RelationDescriptor rd=(RelationDescriptor)ep.getDescriptor();
1102         boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1103         boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1104         boolean inverted=ep.inverted();
1105         boolean negated=dpred.isNegated();
1106         OpExpr expr=(OpExpr)ep.expr;
1107         Opcode opcode=expr.getOpcode();
1108         VarDescriptor leftside=VarDescriptor.makeNew("leftside");
1109         VarDescriptor rightside=VarDescriptor.makeNew("rightside");
1110         VarDescriptor newvalue=VarDescriptor.makeNew("newvalue");
1111         boolean needremoveloop=ar.mayNeedFunctionEnforcement(state)&&ar.needsRemoves(state);
1112
1113         if (needremoveloop&&((munadd==null)||(munremove==null))) {
1114             System.out.println("Warning:  need to have individual remove operations for"+dpred.name());
1115             needremoveloop=false;
1116         }
1117         if (needremoveloop) {
1118             cr.outputline("while (1)");
1119             cr.startblock();
1120         }
1121         if (!inverted) {
1122             ((RelationExpr)expr.getLeftExpr()).getExpr().generate(cr,leftside);
1123             expr.getRightExpr().generate(cr,newvalue);
1124             cr.addDeclaration(rd.getRange().getType().getGenerateType().getSafeSymbol(),rightside.getSafeSymbol());
1125             cr.outputline("SimpleHashget("+rd.getSafeSymbol()+"_hash,"+leftside.getSafeSymbol()+", &"+rightside.getSafeSymbol()+");");
1126         } else {
1127             ((RelationExpr)expr.getLeftExpr()).getExpr().generate(cr,rightside);
1128             expr.getRightExpr().generate(cr,newvalue);
1129             cr.outputline(rd.getDomain().getType().getGenerateType().getSafeSymbol()+" "+leftside.getSafeSymbol()+";");
1130             cr.outputline("SimpleHashget("+rd.getSafeSymbol()+"_hashinv,"+rightside.getSafeSymbol()+", &"+leftside.getSafeSymbol()+");");
1131         }
1132
1133         opcode=Opcode.translateOpcode(negated,opcode);
1134
1135         if (opcode==Opcode.GT) {
1136             cr.outputline(newvalue.getSafeSymbol()+"++;");
1137         } else if (opcode==Opcode.GE) {
1138             /* Equal */
1139         } else if (opcode==Opcode.LT) {
1140             cr.outputline(newvalue.getSafeSymbol()+"--;");
1141         } else if (opcode==Opcode.LE) {
1142             /* Equal */
1143         } else if (opcode==Opcode.EQ) {
1144             /* Equal */
1145         } else if (opcode==Opcode.NE) { /* search for FLAGNE if this is changed*/
1146             cr.outputline(newvalue.getSafeSymbol()+"++;");
1147         } else {
1148             throw new Error("Unrecognized Opcode");
1149         }
1150         /* Do abstract repairs */
1151         if (usageimage) {
1152             cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hash, "+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
1153         }
1154         if (usageinvimage) {
1155             cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hashinv, "+rightside.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
1156         }
1157
1158         if (needremoveloop) {
1159             if (!inverted) {
1160                 cr.outputline("if (SimpleHashcontainskey("+rd.getSafeSymbol()+"_hash, "+leftside.getSafeSymbol()+"))");
1161                 cr.startblock();
1162             } else {
1163                 cr.outputline("if (SimpleHashcontainskey("+rd.getSafeSymbol()+"_hashinv, "+rightside.getSafeSymbol()+"))");
1164                 cr.startblock();
1165             }
1166             for(int i=0;i<state.vRules.size();i++) {
1167                 Rule r=(Rule)state.vRules.get(i);
1168                 if (r.getInclusion().getTargetDescriptors().contains(rd)) {
1169                     for(int j=0;j<munremove.numUpdates();j++) {
1170                         UpdateNode un=munremove.getUpdate(i);
1171                         if (un.getRule()==r) {
1172                                 /* Update for rule r */
1173                             String name=(String)updatenames.get(un);
1174                             cr.outputline("RepairHashaddrelation("+repairtable.getSafeSymbol()+","+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+");");
1175                         }
1176                     }
1177                 }
1178             }
1179             cr.outputline("continue;");
1180             cr.endblock();
1181         }
1182
1183         if (usageimage) {
1184             if (!inverted) {
1185                 cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hash,"+leftside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
1186             } else {
1187                 cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hash, "+newvalue.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
1188             }
1189         }
1190         if (usageinvimage) {
1191             if (!inverted) {
1192                 cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hashinv, "+newvalue.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
1193             } else {
1194                 cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hashinv,"+rightside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
1195             }
1196         }
1197         /* Do concrete repairs */
1198         if (munmodify!=null&&(!ar.mayNeedFunctionEnforcement(state))||(munadd==null)||(ar.needsRemoves(state)&&(munremove==null))) {
1199             for(int i=0;i<state.vRules.size();i++) {
1200                 Rule r=(Rule)state.vRules.get(i);
1201                 if (r.getInclusion().getTargetDescriptors().contains(rd)) {
1202                     for(int j=0;j<munmodify.numUpdates();j++) {
1203                         UpdateNode un=munmodify.getUpdate(j);
1204                         if (un.getRule()==r) {
1205                             /* Update for rule r */
1206                             String name=(String)updatenames.get(un);
1207                             cr.outputline("RepairHashaddrelation2("+repairtable.getSafeSymbol()+","+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+","+newvalue.getSafeSymbol()+");");
1208                         }
1209                     }
1210                 }
1211             }
1212         } else {
1213             /* Start with scheduling removal */
1214             if (ar.needsRemoves(state))
1215                 for(int i=0;i<state.vRules.size();i++) {
1216                     Rule r=(Rule)state.vRules.get(i);
1217                     if (r.getInclusion().getTargetDescriptors().contains(rd)) {
1218                         for(int j=0;j<munremove.numUpdates();j++) {
1219                             UpdateNode un=munremove.getUpdate(i);
1220                             if (un.getRule()==r) {
1221                                 /* Update for rule r */
1222                                 String name=(String)updatenames.get(un);
1223                                 cr.outputline("RepairHashaddrelation("+repairtable.getSafeSymbol()+","+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+");");
1224                             }
1225                         }
1226                     }
1227                 }
1228             /* Now do addition */
1229             UpdateNode un=munadd.getUpdate(0);
1230             String name=(String)updatenames.get(un);
1231             if (!inverted) {
1232                 cr.outputline(name+"(thisvar,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
1233             } else {
1234                 cr.outputline(name+"(thisvar,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newvalue.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
1235             }
1236         }
1237         if (needremoveloop) {
1238             cr.outputline("break;");
1239             cr.endblock();
1240         }
1241     }
1242
1243     public void generatesizerepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr) {
1244         ExprPredicate ep=(ExprPredicate)dpred.getPredicate();
1245         OpExpr expr=(OpExpr)ep.expr;
1246         Opcode opcode=expr.getOpcode();
1247         opcode=Opcode.translateOpcode(dpred.isNegated(),opcode);
1248
1249         MultUpdateNode munremove;
1250
1251         MultUpdateNode munadd;
1252         if (ep.getDescriptor() instanceof RelationDescriptor) {
1253             munremove=getmultupdatenode(conj,dpred,AbstractRepair.REMOVEFROMRELATION);
1254             munadd=getmultupdatenode(conj,dpred,AbstractRepair.ADDTORELATION);
1255         } else {
1256             munremove=getmultupdatenode(conj,dpred,AbstractRepair.REMOVEFROMSET);
1257             munadd=getmultupdatenode(conj,dpred,AbstractRepair.ADDTOSET);
1258         }
1259         int size=ep.rightSize();
1260         VarDescriptor sizevar=VarDescriptor.makeNew("size");
1261         ((OpExpr)expr).left.generate(cr, sizevar);
1262         VarDescriptor change=VarDescriptor.makeNew("change");
1263         cr.addDeclaration("int",change.getSafeSymbol());
1264         boolean generateadd=false;
1265         boolean generateremove=false;
1266         if (opcode==Opcode.GT) {
1267             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size+1)+"-"+sizevar.getSafeSymbol()+";");
1268             generateadd=true;
1269             generateremove=false;
1270         } else if (opcode==Opcode.GE) {
1271             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size)+"-"+sizevar.getSafeSymbol()+";");
1272             generateadd=true;
1273             generateremove=false;
1274         } else if (opcode==Opcode.LT) {
1275             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size-1)+"-"+sizevar.getSafeSymbol()+";");
1276             generateadd=false;
1277             generateremove=true;
1278         } else if (opcode==Opcode.LE) {
1279             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size)+"-"+sizevar.getSafeSymbol()+";");
1280             generateadd=false;
1281             generateremove=true;
1282         } else if (opcode==Opcode.EQ) {
1283             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size)+"-"+sizevar.getSafeSymbol()+";");
1284             if (size==0)
1285                 generateadd=false;
1286             else
1287                 generateadd=true;
1288             generateremove=true;
1289         } else if (opcode==Opcode.NE) {
1290             cr.outputline(change.getSafeSymbol()+"="+String.valueOf(size+1)+"-"+sizevar.getSafeSymbol()+";");
1291             generateadd=true;
1292             generateremove=false;
1293         } else {
1294             throw new Error("Unrecognized Opcode");
1295         }
1296
1297 // In some cases the analysis has determined that generating removes
1298 // is unnecessary
1299         if (generateremove&&munremove==null)
1300             generateremove=false;
1301
1302         Descriptor d=ep.getDescriptor();
1303         if (generateremove) {
1304             cr.outputline("for(;"+change.getSafeSymbol()+"<0;"+change.getSafeSymbol()+"++)");
1305             cr.startblock();
1306             /* Find element to remove */
1307             VarDescriptor leftvar=VarDescriptor.makeNew("leftvar");
1308             VarDescriptor rightvar=VarDescriptor.makeNew("rightvar");
1309             if (d instanceof RelationDescriptor) {
1310                 if (ep.inverted()) {
1311                     ((ImageSetExpr)((SizeofExpr)expr.left).setexpr).generate_leftside(cr,rightvar);
1312                     cr.addDeclaration("int",leftvar.getSafeSymbol());
1313                     cr.outputline("SimpleHashget("+d.getSafeSymbol()+"_hashinv,(int)"+rightvar.getSafeSymbol()+", &"+leftvar.getSafeSymbol()+");");
1314                 } else {
1315                     ((ImageSetExpr)((SizeofExpr)expr.left).setexpr).generate_leftside(cr,leftvar);
1316                     cr.addDeclaration("int",rightvar.getSafeSymbol());
1317                     cr.outputline("SimpleHashget("+d.getSafeSymbol()+"_hash ,(int)"+leftvar.getSafeSymbol()+", &"+rightvar.getSafeSymbol()+");");
1318                 }
1319             } else {
1320                 cr.addDeclaration("int",leftvar.getSafeSymbol());
1321                 cr.outputline(leftvar.getSafeSymbol()+"= SimpleHashfirstkey("+d.getSafeSymbol()+"_hash);");
1322             }
1323             /* Generate abstract remove instruction */
1324             if (d instanceof RelationDescriptor) {
1325                 RelationDescriptor rd=(RelationDescriptor) d;
1326                 boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1327                 boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1328                 if (usageimage)
1329                     cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hash, (int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1330                 if (usageinvimage)
1331                     cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hashinv ,(int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1332             } else {
1333                 cr.outputline("SimpleHashremove("+d.getSafeSymbol()+"_hash, (int)" + leftvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1334             }
1335             /* Generate concrete remove instruction */
1336             for(int i=0;i<state.vRules.size();i++) {
1337                 Rule r=(Rule)state.vRules.get(i);
1338                 if (r.getInclusion().getTargetDescriptors().contains(d)) {
1339                     for(int j=0;j<munremove.numUpdates();j++) {
1340                         UpdateNode un=munremove.getUpdate(j);
1341                         if (un.getRule()==r) {
1342                                 /* Update for rule rule r */
1343                             String name=(String)updatenames.get(un);
1344                             if (d instanceof RelationDescriptor) {
1345                                 cr.outputline("RepairHashaddrelation("+repairtable.getSafeSymbol()+","+d.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+",(int) &"+name+");");
1346                             } else {
1347                                 cr.outputline("RepairHashaddset("+repairtable.getSafeSymbol()+","+d.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+",(int) &"+name+");");
1348                             }
1349                         }
1350                     }
1351                 }
1352             }
1353             cr.endblock();
1354         }
1355
1356 // In some cases the analysis has determined that generating removes
1357 // is unnecessary
1358         if (generateadd&&munadd==null)
1359             generateadd=false;
1360
1361         if (generateadd) {
1362
1363             cr.outputline("for(;"+change.getSafeSymbol()+">0;"+change.getSafeSymbol()+"--)");
1364             cr.startblock();
1365             VarDescriptor newobject=VarDescriptor.makeNew("newobject");
1366             if (d instanceof RelationDescriptor) {
1367                 VarDescriptor otherside=VarDescriptor.makeNew("otherside");
1368                 ((ImageSetExpr)((SizeofExpr)expr.left).setexpr).generate_leftside(cr,otherside);
1369
1370                 RelationDescriptor rd=(RelationDescriptor)d;
1371                 if (termination.sources.relsetSource(rd,!ep.inverted())) {
1372                     /* Set Source */
1373                     SetDescriptor sd=termination.sources.relgetSourceSet(rd,!ep.inverted());
1374                     VarDescriptor iterator=VarDescriptor.makeNew("iterator");
1375                     cr.addDeclaration(sd.getType().getGenerateType().getSafeSymbol(),newobject.getSafeSymbol());
1376                     cr.addDeclaration("struct SimpleIterator",iterator.getSafeSymbol());
1377                     cr.outputline("for(SimpleHashiterator("+sd.getSafeSymbol()+"_hash , &"+ iterator.getSafeSymbol() +"); hasNext(&"+iterator.getSafeSymbol()+");)");
1378                     cr.startblock();
1379                     if (ep.inverted()) {
1380                         cr.outputline("if (!SimpleHashcontainskeydata("+rd.getSafeSymbol()+"_hashinv,"+iterator.getSafeSymbol()+".key(),"+otherside.getSafeSymbol()+"))");
1381                     } else {
1382                         cr.outputline("if (!SimpleHashcontainskeydata("+rd.getSafeSymbol()+"_hash, "+otherside.getSafeSymbol()+","+iterator.getSafeSymbol()+".key()))");
1383                     }
1384                     cr.outputline(newobject.getSafeSymbol()+"=key(&"+iterator.getSafeSymbol()+");");
1385                     cr.outputline("next(&"+iterator.getSafeSymbol()+");");
1386                     cr.endblock();
1387                 } else if (termination.sources.relallocSource(rd,!ep.inverted())) {
1388                     /* Allocation Source*/
1389                     termination.sources.relgenerateSourceAlloc(cr,newobject,rd,!ep.inverted());
1390                 } else throw new Error("No source for adding to Relation");
1391                 if (ep.inverted()) {
1392                     boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1393                     boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1394                     if (usageimage)
1395                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hash, "+newobject.getSafeSymbol()+","+otherside.getSafeSymbol()+");");
1396                     if (usageinvimage)
1397                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hashinv, "+otherside.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1398
1399                     UpdateNode un=munadd.getUpdate(0);
1400                     String name=(String)updatenames.get(un);
1401                     cr.outputline(name+"(thisvar,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newobject.getSafeSymbol()+","+otherside.getSafeSymbol()+");");
1402                 } else {
1403                     boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1404                     boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1405                     if (usageimage)
1406                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hash, "+otherside.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1407                     if (usageinvimage)
1408                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hashinv, "+newobject.getSafeSymbol()+","+otherside.getSafeSymbol()+");");
1409                     UpdateNode un=munadd.getUpdate(0);
1410                     String name=(String)updatenames.get(un);
1411                     cr.outputline(name+"(thisvar, "+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+otherside.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1412                 }
1413             } else {
1414                 SetDescriptor sd=(SetDescriptor)d;
1415                 if (termination.sources.setSource(sd)) {
1416                     /* Set Source */
1417                     /* Set Source */
1418                     SetDescriptor sourcesd=termination.sources.getSourceSet(sd);
1419                     VarDescriptor iterator=VarDescriptor.makeNew("iterator");
1420                     cr.addDeclaration(sourcesd.getType().getGenerateType().getSafeSymbol(), newobject.getSafeSymbol());
1421                     cr.addDeclaration("struct SimpleIterator",iterator.getSafeSymbol());
1422                     cr.outputline("for(SimpleHashiterator("+sourcesd.getSafeSymbol()+"_hash, &"+iterator.getSafeSymbol()+"); hasNext(&"+iterator.getSafeSymbol()+");)");
1423                     cr.startblock();
1424                     cr.outputline("if (!SimpleHashcontainskey("+sd.getSafeSymbol()+"_hash, key(&"+iterator.getSafeSymbol()+")))");
1425                     cr.outputline(newobject.getSafeSymbol()+"=key(&"+iterator.getSafeSymbol()+");");
1426                     cr.outputline("next(&"+iterator.getSafeSymbol()+");");
1427                     cr.endblock();
1428                 } else if (termination.sources.allocSource(sd)) {
1429                     /* Allocation Source*/
1430                     termination.sources.generateSourceAlloc(cr,newobject,sd);
1431                 } else throw new Error("No source for adding to Set");
1432                 cr.outputline("SimpleHashadd("+sd.getSafeSymbol()+"_hash, "+newobject.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1433                 UpdateNode un=munadd.getUpdate(0);
1434                 String name=(String)updatenames.get(un);
1435                 cr.outputline(name+"(thisvar,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
1436             }
1437             cr.endblock();
1438         }
1439     }
1440
1441     public void generateinclusionrepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr){
1442         InclusionPredicate ip=(InclusionPredicate) dpred.getPredicate();
1443         boolean negated=dpred.isNegated();
1444         MultUpdateNode mun=getmultupdatenode(conj,dpred,-1);
1445         VarDescriptor leftvar=VarDescriptor.makeNew("left");
1446         ip.expr.generate(cr, leftvar);
1447
1448         if (negated) {
1449             if (ip.setexpr instanceof ImageSetExpr) {
1450                 ImageSetExpr ise=(ImageSetExpr) ip.setexpr;
1451                 VarDescriptor rightvar=ise.getVar();
1452                 boolean inverse=ise.inverted();
1453                 RelationDescriptor rd=ise.getRelation();
1454                 boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1455                 boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1456                 if (inverse) {
1457                     if (usageimage)
1458                         cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hash, (int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1459                     if (usageinvimage)
1460                         cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hashinv, (int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1461                 } else {
1462                     if (usageimage)
1463                         cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hash ,(int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1464                     if (usageinvimage)
1465                         cr.outputline("SimpleHashremove("+rd.getSafeSymbol()+"_hashinv, (int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1466                 }
1467                 for(int i=0;i<state.vRules.size();i++) {
1468                     Rule r=(Rule)state.vRules.get(i);
1469                     if (r.getInclusion().getTargetDescriptors().contains(rd)) {
1470                         for(int j=0;j<mun.numUpdates();j++) {
1471                             UpdateNode un=mun.getUpdate(j);
1472                             if (un.getRule()==r) {
1473                                 /* Update for rule rule r */
1474                                 String name=(String)updatenames.get(un);
1475                                 if (inverse) {
1476                                     cr.outputline("RepairHashaddrelation("+repairtable.getSafeSymbol()+","+rd.getNum()+","+r.getNum()+","+rightvar.getSafeSymbol()+","+leftvar.getSafeSymbol()+",(int) &"+name+");");
1477                                 } else {
1478                                     cr.outputline("RepairHashaddrelation("+repairtable.getSafeSymbol()+","+rd.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+",(int) &"+name+");");
1479                                 }
1480                             }
1481                         }
1482                     }
1483                 }
1484             } else {
1485                 SetDescriptor sd=ip.setexpr.sd;
1486                 cr.outputline("SimpleHashremove("+sd.getSafeSymbol()+"_hash, (int)" + leftvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1487
1488                 for(int i=0;i<state.vRules.size();i++) {
1489                     Rule r=(Rule)state.vRules.get(i);
1490                     if (r.getInclusion().getTargetDescriptors().contains(sd)) {
1491                         for(int j=0;j<mun.numUpdates();j++) {
1492                             UpdateNode un=mun.getUpdate(j);
1493                             if (un.getRule()==r) {
1494                                 /* Update for rule rule r */
1495                                 String name=(String)updatenames.get(un);
1496                                 cr.outputline("RepairHashaddset("+repairtable.getSafeSymbol()+","+sd.getNum()+","+r.getNum()+","+leftvar.getSafeSymbol()+",(int) &"+name+");");
1497                             }
1498                         }
1499                     }
1500                 }
1501             }
1502         } else {
1503             /* Generate update */
1504             if (ip.setexpr instanceof ImageSetExpr) {
1505                 ImageSetExpr ise=(ImageSetExpr) ip.setexpr;
1506                 VarDescriptor rightvar=ise.getVar();
1507                 boolean inverse=ise.inverted();
1508                 RelationDescriptor rd=ise.getRelation();
1509                 boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1510                 boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1511                 if (inverse) {
1512                     if (usageimage)
1513                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hash, (int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1514                     if (usageinvimage)
1515                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hashinv, (int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1516                 } else {
1517                     if (usageimage)
1518                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hash, (int)" + leftvar.getSafeSymbol() + ", (int)" + rightvar.getSafeSymbol() + ");");
1519                     if (usageinvimage)
1520                         cr.outputline("SimpleHashadd("+rd.getSafeSymbol()+"_hashinv, (int)" + rightvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1521                 }
1522                 UpdateNode un=mun.getUpdate(0);
1523                 String name=(String)updatenames.get(un);
1524                 if (inverse) {
1525                     cr.outputline(name+"(thisvar,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+rightvar.getSafeSymbol()+","+leftvar.getSafeSymbol()+");");
1526                 } else {
1527                     cr.outputline(name+"(thisvar,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+");");
1528                 }
1529             } else {
1530                 SetDescriptor sd=ip.setexpr.sd;
1531                 cr.outputline("SimpleHashadd("+sd.getSafeSymbol()+"_hash, (int)" + leftvar.getSafeSymbol() + ", (int)" + leftvar.getSafeSymbol() + ");");
1532
1533                 UpdateNode un=mun.getUpdate(0);
1534                 /* Update for rule rule r */
1535                 String name=(String)updatenames.get(un);
1536                 cr.outputline(name+"(thisvar,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftvar.getSafeSymbol()+");");
1537             }
1538         }
1539     }
1540
1541     public static Vector getrulelist(Descriptor d) {
1542         Vector dispatchrules = new Vector();
1543         Vector rules = State.currentState.vRules;
1544
1545         for (int i = 0; i < rules.size(); i++) {
1546             Rule rule = (Rule) rules.elementAt(i);
1547             Set requiredsymbols = rule.getRequiredDescriptors();
1548
1549             // #TBD#: in general this is wrong because these descriptors may contain descriptors
1550             // bound in "in?" expressions which need to be dealt with in a topologically sorted
1551             // fashion...
1552
1553             if (rule.getRequiredDescriptors().contains(d)) {
1554                 dispatchrules.addElement(rule);
1555             }
1556         }
1557         return dispatchrules;
1558     }
1559
1560     private boolean need_compensation(Rule r) {
1561         if (!Compiler.REPAIR)
1562             return false;
1563         GraphNode gn=(GraphNode)termination.scopefalsify.get(r);
1564         for(Iterator edgeit=gn.edges();edgeit.hasNext();) {
1565             GraphNode.Edge edge=(GraphNode.Edge)edgeit.next();
1566             GraphNode gn2=edge.getTarget();
1567             if (!removed.contains(gn2)) {
1568                 TermNode tn2=(TermNode)gn2.getOwner();
1569                 if (tn2.getType()==TermNode.CONSEQUENCE)
1570                     return false;
1571             }
1572         }
1573         return true;
1574     }
1575
1576     private UpdateNode find_compensation(Rule r) {
1577         GraphNode gn=(GraphNode)termination.scopefalsify.get(r);
1578         for(Iterator edgeit=gn.edges();edgeit.hasNext();) {
1579             GraphNode.Edge edge=(GraphNode.Edge)edgeit.next();
1580             GraphNode gn2=edge.getTarget();
1581             if (!removed.contains(gn2)) {
1582                 TermNode tn2=(TermNode)gn2.getOwner();
1583                 if (tn2.getType()==TermNode.UPDATE) {
1584                     MultUpdateNode mun=tn2.getUpdate();
1585                     for(int i=0;i<mun.numUpdates();i++) {
1586                         UpdateNode un=mun.getUpdate(i);
1587                         if (un.getRule()==r)
1588                             return un;
1589                     }
1590                 }
1591             }
1592         }
1593         throw new Error("No Compensation Update could be found");
1594     }
1595
1596     public void generate_dispatch(CodeWriter cr, RelationDescriptor rd, String leftvar, String rightvar) {
1597         boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
1598         boolean usageinvimage=rd.testUsage(RelationDescriptor.INVIMAGE);
1599
1600         if (!(usageinvimage||usageimage)) /* not used at all*/
1601             return;
1602
1603         cr.outputline("/* RELATION DISPATCH */");
1604         if (Compiler.REPAIR) {
1605             cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
1606             if (usageimage)
1607                 cr.outputline("!SimpleHashcontainskeydata("+oldmodel.getSafeSymbol()+"->"+rd.getJustSafeSymbol() + "_hash, "+leftvar+","+rightvar+"))");
1608             else
1609                 cr.outputline("!SimpleHashcontainskeydata("+oldmodel.getSafeSymbol() +"->"+rd.getJustSafeSymbol()+"_hashinv, "+rightvar+","+leftvar+"))");
1610
1611             cr.startblock(); {
1612                 /* Adding new item */
1613                 /* Perform safety checks */
1614                 cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
1615                 cr.outputline("RepairHashcontainsrelation("+repairtable.getSafeSymbol()+","+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+"))");
1616                 cr.startblock(); {
1617                     /* Have update to call into */
1618                     VarDescriptor mdfyptr=VarDescriptor.makeNew("modifyptr");
1619                     VarDescriptor ismdfyptr=VarDescriptor.makeNew("ismodifyptr");
1620                     cr.addDeclaration("int ",ismdfyptr.getSafeSymbol());
1621                     cr.outputline(ismdfyptr.getSafeSymbol()+"=RepairHashismodify("+repairtable.getSafeSymbol()+","+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
1622
1623
1624
1625
1626                     String parttype="";
1627                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1628                         if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
1629                             parttype=parttype+", int, int";
1630                         else
1631                             parttype=parttype+", int";
1632                     }
1633
1634                     VarDescriptor tmpptr=VarDescriptor.makeNew("tempupdateptr");
1635
1636                     String methodcall="(thisvar,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
1637                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1638                         Quantifier q=currentrule.getQuantifier(i);
1639                         if (q instanceof SetQuantifier) {
1640                             SetQuantifier sq=(SetQuantifier) q;
1641                             methodcall+=","+sq.getVar().getSafeSymbol();
1642                         } else if (q instanceof RelationQuantifier) {
1643                             RelationQuantifier rq=(RelationQuantifier) q;
1644                             methodcall+=","+rq.x.getSafeSymbol();
1645                             methodcall+=","+rq.y.getSafeSymbol();
1646                         } else if (q instanceof ForQuantifier) {
1647                             ForQuantifier fq=(ForQuantifier) q;
1648                             methodcall+=","+fq.getVar().getSafeSymbol();
1649                         }
1650                     }
1651
1652
1653
1654                     cr.addDeclaration("void *",tmpptr.getSafeSymbol());
1655                     cr.outputline(tmpptr.getSafeSymbol()+"=");
1656                     cr.outputline("(void *) RepairHashgetrelation("+repairtable.getSafeSymbol()+","+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
1657                     cr.outputline("if ("+ismdfyptr.getSafeSymbol()+")");
1658                     {
1659                         VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
1660                         String methodcallprefix="("+funptr.getSafeSymbol()+") ";
1661                         cr.startblock();
1662                         cr.addDeclaration("int",mdfyptr.getSafeSymbol());
1663                         cr.outputline(mdfyptr.getSafeSymbol()+"=RepairHashgetrelation2("+repairtable.getSafeSymbol()+","+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
1664                         cr.addDeclaration("void (*"+funptr.getSafeSymbol()+") (struct "+name+"_state *, struct "+name+"*, struct RepairHash *"+parttype+",int,int,int);");
1665                         cr.outputline(funptr.getSafeSymbol()+"="+"(void (*) (struct "+name+"_state *, struct "+name+"*, struct RepairHash *"+parttype+",int,int,int)) "+tmpptr.getSafeSymbol()+";");
1666                         cr.outputline(methodcallprefix+methodcall+","+leftvar+", "+rightvar+", "+mdfyptr.getSafeSymbol() +");");
1667                         cr.endblock();
1668                     }
1669                     cr.outputline("else ");
1670                     {
1671                         VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
1672                         String methodcallprefix="("+funptr.getSafeSymbol()+") ";
1673                         cr.startblock();
1674                         cr.addDeclaration("void (*"+funptr.getSafeSymbol()+") (struct "+name+"_state *, struct "+name+"*,struct RepairHash *"+parttype+");");
1675                         cr.outputline(funptr.getSafeSymbol()+"="+"(void (*) (struct "+name+"_state *,struct "+name+"*,struct RepairHash *"+parttype+")) "+tmpptr.getSafeSymbol()+";");
1676                         cr.outputline(methodcallprefix+methodcall+");");
1677                         cr.endblock();
1678                     }
1679                     cr.outputline("free"+name+"("+newmodel.getSafeSymbol()+");");
1680                     cr.outputline("goto rebuild;");
1681                 }
1682                 cr.endblock();
1683
1684                 /* Build standard compensation actions */
1685                 if (need_compensation(currentrule)) {
1686                     UpdateNode un=find_compensation(currentrule);
1687                     String name=(String)updatenames.get(un);
1688                     usedupdates.add(un); /* Mark as used */
1689                     String methodcall=name+"(thisvar,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
1690                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1691                         Quantifier q=currentrule.getQuantifier(i);
1692                         if (q instanceof SetQuantifier) {
1693                             SetQuantifier sq=(SetQuantifier) q;
1694                             methodcall+=","+sq.getVar().getSafeSymbol();
1695                         } else if (q instanceof RelationQuantifier) {
1696                             RelationQuantifier rq=(RelationQuantifier) q;
1697                             methodcall+=","+rq.x.getSafeSymbol();
1698                             methodcall+=","+rq.y.getSafeSymbol();
1699                         } else if (q instanceof ForQuantifier) {
1700                             ForQuantifier fq=(ForQuantifier) q;
1701                             methodcall+=","+fq.getVar().getSafeSymbol();
1702                         }
1703                     }
1704                     methodcall+=");";
1705                     cr.outputline(methodcall);
1706                     cr.outputline("free"+name+"("+newmodel.getSafeSymbol()+");");
1707                     cr.outputline("goto rebuild;");
1708                 }
1709             }
1710             cr.endblock();
1711         }
1712
1713         String addeditem = (VarDescriptor.makeNew("addeditem")).getSafeSymbol();
1714         cr.startblock();
1715         cr.addDeclaration("int" , addeditem);
1716         cr.outputline(addeditem + "=0;");
1717
1718         String ifstring="if (!maybe";
1719         if (rd.getDomain().getType() instanceof StructureTypeDescriptor)  {
1720             ifstring+="&&"+leftvar;
1721         }
1722
1723         if (rd.getRange().getType() instanceof StructureTypeDescriptor)  {
1724             ifstring+="&&"+rightvar;
1725         }
1726
1727         ifstring+=")";
1728
1729         if (rd.testUsage(RelationDescriptor.IMAGE)) {
1730             cr.outputline(ifstring);
1731             cr.outputline(addeditem + " = SimpleHashadd("+rd.getSafeSymbol()+"_hash, (int)" + leftvar + ", (int)" + rightvar+ ");");
1732         }
1733
1734         if (rd.testUsage(RelationDescriptor.INVIMAGE)) {
1735             cr.outputline(ifstring);
1736             cr.outputline(addeditem + " = SimpleHashadd("+rd.getSafeSymbol()+"_hashinv, (int)" + rightvar + ", (int)" + leftvar + ");");
1737         }
1738
1739
1740         Vector dispatchrules = getrulelist(rd);
1741
1742         Set toremove=new HashSet();
1743         for(int i=0;i<dispatchrules.size();i++) {
1744             Rule r=(Rule)dispatchrules.get(i);
1745             if (!ruleset.contains(r))
1746                 toremove.add(r);
1747         }
1748         dispatchrules.removeAll(toremove);
1749         if (dispatchrules.size() == 0) {
1750             cr.outputline("/* nothing to dispatch */");
1751             cr.endblock();
1752             return;
1753         }
1754
1755         cr.outputline("if (" + addeditem + ")");
1756         cr.startblock();
1757
1758         for(int i = 0; i < dispatchrules.size(); i++) {
1759             Rule rule = (Rule) dispatchrules.elementAt(i);
1760             if (rule.getGuardExpr().getRequiredDescriptors().contains(rd)) {
1761                 /* Guard depends on this relation, so we recomput everything */
1762                 cr.outputline("WorkListadd("+worklist.getSafeSymbol()+","+rule.getNum()+",-1,0,0);");
1763             } else {
1764                 for (int j=0;j<rule.numQuantifiers();j++) {
1765                     Quantifier q=rule.getQuantifier(j);
1766                     if (q.getRequiredDescriptors().contains(rd)) {
1767                         /* Generate add */
1768                         cr.outputline("WorkListadd("+worklist.getSafeSymbol()+","+rule.getNum()+","+j+","+leftvar+","+rightvar+");");
1769                     }
1770                 }
1771             }
1772         }
1773         cr.endblock();
1774         cr.endblock();
1775     }
1776
1777
1778     public void generate_dispatch(CodeWriter cr, SetDescriptor sd, String setvar) {
1779         cr.outputline("/* SET DISPATCH */");
1780         if (Compiler.REPAIR) {
1781             cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
1782             cr.outputline("!SimpleHashcontainskey("+oldmodel.getSafeSymbol() +"->"+sd.getJustSafeSymbol()+"_hash, "+setvar+"))");
1783             cr.startblock(); {
1784                 /* Adding new item */
1785                 /* See if there is an outstanding update in the repairtable */
1786                 cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
1787                 cr.outputline("RepairHashcontainsset("+repairtable.getSafeSymbol()+","+sd.getNum()+","+currentrule.getNum()+","+setvar+"))");
1788                 cr.startblock(); {
1789                     /* Have update to call into */
1790                     VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
1791                     String parttype="";
1792                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1793                         if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
1794                             parttype=parttype+", int, int";
1795                         else
1796                             parttype=parttype+", int";
1797                     }
1798                     cr.addDeclaration("void (*"+funptr.getSafeSymbol()+") (struct "+name+"_state *,struct "+name+"*,struct RepairHash *"+parttype+");");
1799                     cr.outputline(funptr.getSafeSymbol()+"=");
1800                     cr.outputline("(void (*) (struct "+name+"_state *,struct "+name+"*,struct RepairHash *"+parttype+")) RepairHashgetset("+repairtable.getSafeSymbol()+","+sd.getNum()+","+currentrule.getNum()+","+setvar+");");
1801                     String methodcall="("+funptr.getSafeSymbol()+") (thisvar,"+oldmodel.getSafeSymbol()+","+
1802                         repairtable.getSafeSymbol();
1803                     for(int i=0;i<currentrule.numQuantifiers();i++) {
1804                         Quantifier q=currentrule.getQuantifier(i);
1805                         if (q instanceof SetQuantifier) {
1806                             SetQuantifier sq=(SetQuantifier) q;
1807                             methodcall+=","+sq.getVar().getSafeSymbol();
1808                         } else if (q instanceof RelationQuantifier) {
1809                             RelationQuantifier rq=(RelationQuantifier) q;
1810                             methodcall+=","+rq.x.getSafeSymbol();
1811                             methodcall+=","+rq.y.getSafeSymbol();
1812                         } else if (q instanceof ForQuantifier) {
1813                             ForQuantifier fq=(ForQuantifier) q;
1814                             methodcall+=","+fq.getVar().getSafeSymbol();
1815                         }
1816                     }
1817                     methodcall+=");";
1818                     cr.outputline(methodcall);
1819                     cr.outputline("free"+name+"("+newmodel.getSafeSymbol()+");");
1820                     cr.outputline("goto rebuild;");
1821                 }
1822                 cr.endblock();
1823                 /* Build standard compensation actions */
1824                 Vector ruleset=new Vector();
1825                 ruleset.add(currentrule);
1826                 if (state.implicitruleinv.containsKey(currentrule))
1827                     ruleset.addAll((Set)state.implicitruleinv.get(currentrule));
1828                 for(int i=0;i<ruleset.size();i++) {
1829                     Rule itrule=(Rule)ruleset.get(i);
1830
1831                     if (need_compensation(itrule)) {
1832                         UpdateNode un=find_compensation(itrule);
1833                         String name=(String)updatenames.get(un);
1834                         usedupdates.add(un); /* Mark as used */
1835
1836                         String methodcall=name+"(thisvar,"+oldmodel.getSafeSymbol()+","+
1837                             repairtable.getSafeSymbol();
1838                         for(int j=0;j<currentrule.numQuantifiers();j++) {
1839                             Quantifier q=currentrule.getQuantifier(j);
1840                             if (q instanceof SetQuantifier) {
1841                                 SetQuantifier sq=(SetQuantifier) q;
1842                                 methodcall+=","+sq.getVar().getSafeSymbol();
1843                             } else if (q instanceof RelationQuantifier) {
1844                                 RelationQuantifier rq=(RelationQuantifier) q;
1845                                 methodcall+=","+rq.x.getSafeSymbol();
1846                                 methodcall+=","+rq.y.getSafeSymbol();
1847                             } else if (q instanceof ForQuantifier) {
1848                                 ForQuantifier fq=(ForQuantifier) q;
1849                                 methodcall+=","+fq.getVar().getSafeSymbol();
1850                             }
1851                         }
1852                         methodcall+=");";
1853                         if (currentrule!=itrule) {
1854                             SetDescriptor sdrule=((SetInclusion)itrule.getInclusion()).getSet();
1855                             cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
1856                             cr.outputline("!SimpleHashcontainskey("+ oldmodel.getSafeSymbol() +"->"+sdrule.getJustSafeSymbol() +"_hash,"+setvar+"))");
1857                             cr.startblock();
1858                         }
1859                         cr.outputline(methodcall);
1860                         cr.outputline("free"+name+"("+newmodel.getSafeSymbol()+");");
1861                         cr.outputline("goto rebuild;");
1862                         cr.endblock();
1863                     }
1864                     if (currentrule==itrule)
1865                         cr.endblock();
1866                 }
1867             }
1868         }
1869
1870         cr.startblock();
1871         String addeditem = (VarDescriptor.makeNew("addeditem")).getSafeSymbol();
1872         cr.addDeclaration("int", addeditem);
1873         cr.outputline(addeditem + " = 0;");
1874         if (sd.getType() instanceof StructureTypeDescriptor)  {
1875             cr.outputline("if (!maybe&&"+setvar+")");
1876         } else
1877             cr.outputline("if (!maybe)");
1878         cr.outputline(addeditem + " = SimpleHashadd("+sd.getSafeSymbol()+"_hash, (int)" + setvar +  ", (int)" + setvar + ");");
1879         cr.startblock();
1880         Vector dispatchrules = getrulelist(sd);
1881
1882         Set toremove=new HashSet();
1883         for(int i=0;i<dispatchrules.size();i++) {
1884             Rule r=(Rule)dispatchrules.get(i);
1885             if (!ruleset.contains(r))
1886                 toremove.add(r);
1887         }
1888         dispatchrules.removeAll(toremove);
1889
1890         if (dispatchrules.size() == 0) {
1891             cr.outputline("/* nothing to dispatch */");
1892             cr.endblock();
1893             cr.endblock();
1894             return;
1895         }
1896         /* Add item to worklist if new */
1897         cr.outputline("if ("+addeditem+")");
1898         cr.startblock();
1899         for(int i = 0; i < dispatchrules.size(); i++) {
1900             Rule rule = (Rule) dispatchrules.elementAt(i);
1901             if (SetDescriptor.expand(rule.getGuardExpr().getRequiredDescriptors()).contains(sd)) {
1902                 /* Guard depends on this relation, so we recompute everything */
1903                 cr.outputline("WorkListadd("+worklist.getSafeSymbol()+","+rule.getNum()+",-1,0,0);");
1904             } else {
1905                 for (int j=0;j<rule.numQuantifiers();j++) {
1906                     Quantifier q=rule.getQuantifier(j);
1907                     if (SetDescriptor.expand(q.getRequiredDescriptors()).contains(sd)) {
1908                         /* Generate add */
1909                         cr.outputline("WorkListadd("+worklist.getSafeSymbol()+","+rule.getNum()+","+j+","+setvar+",0);");
1910                     }
1911                 }
1912             }
1913         }
1914         cr.endblock();
1915         cr.endblock();
1916         cr.endblock();
1917     }
1918 }