Repair/RepairCompiler/MCC/IR/RepairGenerator.java

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