Repair/RepairCompiler/MCC/IR/RepairGenerator.java

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