7 public class BuildFlat {
10 MethodDescriptor currmd;
17 public BuildFlat(State st, TypeUtil typeutil) {
19 temptovar=new Hashtable();
20 this.typeutil=typeutil;
21 this.breakset=new HashSet();
22 this.continueset=new HashSet();
25 public Hashtable getMap() {
29 public void buildFlat() {
30 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
32 ClassDescriptor cn=(ClassDescriptor)it.next();
36 Iterator task_it=state.getTaskSymbolTable().getDescriptorsIterator();
37 while(task_it.hasNext()) {
38 TaskDescriptor td=(TaskDescriptor)task_it.next();
43 private void flattenTask(TaskDescriptor td) {
44 BlockNode bn=state.getMethodBody(td);
45 NodePair np=flattenBlockNode(bn);
46 FlatNode fn=np.getBegin();
48 FlatNode fn2=np.getEnd();
50 if (fn2!=null&& fn2.kind()!=FKind.FlatReturnNode) {
51 FlatReturnNode rnflat=new FlatReturnNode(null);
56 FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.PRE);
59 FlatMethod fm=new FlatMethod(td, fe);
62 Hashtable visitedset=new Hashtable();
64 for(int i=0; i<td.numParameters(); i++) {
65 VarDescriptor paramvd=td.getParameter(i);
66 fm.addParameterTemp(getTempforVar(paramvd));
67 TagExpressionList tel=td.getTag(paramvd);
68 //BUG added next line to fix...to test feed in any task program
70 for(int j=0; j<tel.numTags(); j++) {
71 TagVarDescriptor tvd=(TagVarDescriptor) td.getParameterTable().getFromSameScope(tel.getName(j));
72 TempDescriptor tagtmp=getTempforVar(tvd);
73 if (!visitedset.containsKey(tvd.getName())) {
74 visitedset.put(tvd.getName(),tvd.getTag());
75 fm.addTagTemp(tagtmp);
77 TagDescriptor tmptd=(TagDescriptor) visitedset.get(tvd.getName());
78 if (!tmptd.equals(tvd.getTag()))
79 throw new Error("Two different tag types with same name as parameters to:"+td);
81 tel.setTemp(j, tagtmp);
85 /* Flatten Vector of Flag Effects */
86 Vector flags=td.getFlagEffects();
87 updateFlagActionNode(ffan,flags);
89 state.addFlatCode(td,fm);
93 /* This method transforms a vector of FlagEffects into the FlatFlagActionNode */
94 private void updateFlagActionNode(FlatFlagActionNode ffan, Vector flags) {
95 if (flags==null) // Do nothing if the flag effects vector is empty
98 for(int i=0; i<flags.size(); i++) {
99 FlagEffects fes=(FlagEffects)flags.get(i);
100 TempDescriptor flagtemp=getTempforVar(fes.getVar());
102 for(int j=0; j<fes.numEffects(); j++) {
103 FlagEffect fe=fes.getEffect(j);
104 ffan.addFlagAction(flagtemp, fe.getFlag(), fe.getStatus());
107 for(int j=0; j<fes.numTagEffects(); j++) {
108 TagEffect te=fes.getTagEffect(j);
109 TempDescriptor tagtemp=getTempforVar(te.getTag());
111 ffan.addTagAction(flagtemp, te.getTag().getTag(), tagtemp, te.getStatus());
116 FlatAtomicEnterNode curran=null;
118 private FlatNode spliceReturn(FlatNode fn) {
119 FlatReturnNode rnflat=null;
120 if (currmd.getReturnType()==null||currmd.getReturnType().isVoid()) {
121 rnflat=new FlatReturnNode(null);
124 TempDescriptor tmp=TempDescriptor.tempFactory("rettmp",currmd.getReturnType());
126 if (currmd.getReturnType().isPtr()) {
128 } else if (currmd.getReturnType().isByte()) {
130 } else if (currmd.getReturnType().isShort()) {
131 o=new Short((short)0);
132 } else if (currmd.getReturnType().isChar()) {
133 o=new Character('\0');
134 } else if (currmd.getReturnType().isInt()) {
136 } else if (currmd.getReturnType().isLong()) {
138 } else if (currmd.getReturnType().isBoolean()) {
139 o=new Boolean(false);
140 } else if (currmd.getReturnType().isFloat()) {
142 } else if (currmd.getReturnType().isDouble()) {
147 FlatLiteralNode fln=new FlatLiteralNode(currmd.getReturnType(),o,tmp);
148 rnflat=new FlatReturnNode(tmp);
155 private void flattenClass(ClassDescriptor cn) {
156 Iterator methodit=cn.getMethods();
157 while(methodit.hasNext()) {
158 currmd=(MethodDescriptor)methodit.next();
160 // if OOOJava is on, splice a special SESE in to
161 // enclose the main method
162 boolean spliceInImplicitMain =
164 currmd.equals( typeutil.getMain() );
166 FlatSESEEnterNode spliceSESE = null;
167 FlatSESEExitNode spliceExit = null;
169 if( spliceInImplicitMain ) {
170 SESENode mainTree = new SESENode( "main" );
171 spliceSESE = new FlatSESEEnterNode( mainTree );
172 spliceExit = new FlatSESEExitNode ( mainTree );
173 spliceSESE.setFlatExit ( spliceExit );
174 spliceExit.setFlatEnter( spliceSESE );
175 spliceSESE.setIsMainSESE();
181 BlockNode bn=state.getMethodBody(currmd);
183 if (state.DSM&&currmd.getModifiers().isAtomic()) {
184 curran=new FlatAtomicEnterNode();
187 NodePair np=flattenBlockNode(bn);
188 FlatNode fn=np.getBegin();
189 if ((state.THREAD||state.MGC)&&currmd.getModifiers().isSynchronized()) {
190 MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorEnter");
191 TempDescriptor thistd=null;
192 if(currmd.getModifiers().isStatic()) {
193 // need to lock the Class object
194 thistd=new TempDescriptor("classobj", cn);
197 thistd=getTempforVar(currmd.getThis());
199 FlatCall fc = new FlatCall(memd, null, thistd, new TempDescriptor[0]);
202 if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
203 MethodDescriptor memdex=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
204 FlatCall fcunlock=new FlatCall(memdex, null, thistd, new TempDescriptor[0]);
205 np.getEnd().addNext(fcunlock);
206 FlatNode rnflat=spliceReturn(fcunlock);
209 } else if (state.DSM&&currmd.getModifiers().isAtomic()) {
212 if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
213 FlatAtomicExitNode aen=new FlatAtomicExitNode(curran);
214 np.getEnd().addNext(aen);
215 FlatNode rnflat=spliceReturn(aen);
219 } else if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
220 FlatNode rnflat=null;
221 if( spliceInImplicitMain ) {
222 np.getEnd().addNext(spliceExit);
223 rnflat=spliceReturn(spliceExit);
225 rnflat=spliceReturn(np.getEnd());
228 } else if (np.getEnd()!=null) {
229 if( spliceInImplicitMain ) {
230 FlatReturnNode rnflat=(FlatReturnNode)np.getEnd();
231 np.getEnd().addNext(spliceExit);
232 spliceExit.addNext(fe);
236 if( spliceInImplicitMain ) {
237 spliceSESE.addNext(fn);
241 FlatMethod fm=new FlatMethod(currmd, fe);
243 if (!currmd.isStatic())
244 fm.addParameterTemp(getTempforParam(currmd.getThis()));
245 for(int i=0; i<currmd.numParameters(); i++) {
246 fm.addParameterTemp(getTempforParam(currmd.getParameter(i)));
249 state.addFlatCode(currmd,fm);
253 private NodePair flattenBlockNode(BlockNode bn) {
256 for(int i=0; i<bn.size(); i++) {
257 NodePair np=flattenBlockStatementNode(bn.get(i));
258 FlatNode np_begin=np.getBegin();
259 FlatNode np_end=np.getEnd();
266 end.addNext(np_begin);
268 return new NodePair(begin, null);
274 end=begin=new FlatNop();
276 return new NodePair(begin,end);
279 private NodePair flattenBlockExpressionNode(BlockExpressionNode en) {
280 //System.out.println("DEBUG -> inside flattenBlockExpressionNode\n");
281 TempDescriptor tmp=TempDescriptor.tempFactory("neverused",en.getExpression().getType());
282 return flattenExpressionNode(en.getExpression(),tmp);
285 private NodePair flattenCastNode(CastNode cn,TempDescriptor out_temp) {
286 TempDescriptor tmp=TempDescriptor.tempFactory("tocast",cn.getExpression().getType());
287 NodePair np=flattenExpressionNode(cn.getExpression(), tmp);
288 FlatCastNode fcn=new FlatCastNode(cn.getType(), tmp, out_temp);
289 np.getEnd().addNext(fcn);
290 return new NodePair(np.getBegin(),fcn);
293 private NodePair flattenLiteralNode(LiteralNode ln,TempDescriptor out_temp) {
294 FlatLiteralNode fln=new FlatLiteralNode(ln.getType(), ln.getValue(), out_temp);
295 return new NodePair(fln,fln);
298 private NodePair flattenOffsetNode(OffsetNode ofn, TempDescriptor out_temp) {
299 FlatOffsetNode fln = new FlatOffsetNode(ofn.getClassType(), ofn.getField(), out_temp);
300 return new NodePair(fln, fln);
303 private NodePair flattenCreateObjectNode(CreateObjectNode con,TempDescriptor out_temp) {
304 TypeDescriptor td=con.getType();
306 FlatNode fn=new FlatNew(td, out_temp, con.isGlobal(), con.getDisjointId());
308 //handle wrapper fields
309 ClassDescriptor cd=td.getClassDesc();
310 for(Iterator fieldit=cd.getFields();fieldit.hasNext();) {
311 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
312 if (fd.getType().iswrapper()) {
313 TempDescriptor wrap_tmp=TempDescriptor.tempFactory("wrapper_obj",fd.getType());
314 FlatNode fnwrapper=new FlatNew(fd.getType(), wrap_tmp, con.isGlobal());
315 FlatSetFieldNode fsfn=new FlatSetFieldNode(out_temp, fd, wrap_tmp);
316 last.addNext(fnwrapper);
317 fnwrapper.addNext(fsfn);
322 TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
325 for(int i=0; i<con.numArgs(); i++) {
326 ExpressionNode en=con.getArg(i);
327 TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
329 NodePair np=flattenExpressionNode(en, tmp);
330 last.addNext(np.getBegin());
333 MethodDescriptor md=con.getConstructor();
334 //Call to constructor
335 FlatCall fc=new FlatCall(md, null, out_temp, temps);
338 if (td.getClassDesc().hasFlags()) {
339 // if (con.getFlagEffects()!=null) {
340 FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.NEWOBJECT);
341 FlagEffects fes=con.getFlagEffects();
342 TempDescriptor flagtemp=out_temp;
344 for(int j=0; j<fes.numEffects(); j++) {
345 FlagEffect fe=fes.getEffect(j);
346 ffan.addFlagAction(flagtemp, fe.getFlag(), fe.getStatus());
348 for(int j=0; j<fes.numTagEffects(); j++) {
349 TagEffect te=fes.getTagEffect(j);
350 TempDescriptor tagtemp=getTempforVar(te.getTag());
352 ffan.addTagAction(flagtemp, te.getTag().getTag(), tagtemp, te.getStatus());
355 ffan.addFlagAction(flagtemp, null, false);
360 return new NodePair(fn,last);
362 if(con.getArrayInitializer() == null) {
365 TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
366 for (int i=0; i<con.numArgs(); i++) {
367 ExpressionNode en=con.getArg(i);
368 TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
370 NodePair np=flattenExpressionNode(en, tmp);
374 last.addNext(np.getBegin());
377 TempDescriptor tmp2=(i==0) ?
379 TempDescriptor.tempFactory("arg",en.getType());
381 FlatNew fn=new FlatNew(td, out_temp, temps[0], con.isGlobal(), con.getDisjointId());
383 if (temps.length>1) {
384 NodePair np=generateNewArrayLoop(temps, td.dereference(), out_temp, 0, con.isGlobal());
385 fn.addNext(np.getBegin());
386 return new NodePair(first,np.getEnd());
387 } else if (td.isArray()&&td.dereference().iswrapper()) {
388 NodePair np=generateNewArrayLoop(temps, td.dereference(), out_temp, 0, con.isGlobal());
389 fn.addNext(np.getBegin());
390 return new NodePair(first,np.getEnd());
392 return new NodePair(first, fn);
393 } else if(state.MGC) {
394 // array creation with initializers
395 return flattenArrayInitializerNode(con.getArrayInitializer(), out_temp);
401 private NodePair generateNewArrayLoop(TempDescriptor[] temparray, TypeDescriptor td, TempDescriptor tmp, int i, boolean isglobal) {
402 TempDescriptor index=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
403 TempDescriptor tmpone=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
404 FlatNop fnop=new FlatNop(); //last node
407 FlatLiteralNode fln=new FlatLiteralNode(index.getType(),new Integer(0),index);
409 FlatLiteralNode fln2=new FlatLiteralNode(tmpone.getType(),new Integer(1),tmpone);
411 TempDescriptor tmpbool=TempDescriptor.tempFactory("comp",new TypeDescriptor(TypeDescriptor.BOOLEAN));
413 FlatOpNode fcomp=new FlatOpNode(tmpbool,index,temparray[i],new Operation(Operation.LT));
414 FlatCondBranch fcb=new FlatCondBranch(tmpbool);
415 fcb.setTrueProb(State.TRUEPROB);
418 TempDescriptor new_tmp=TempDescriptor.tempFactory("tmp",td);
419 FlatNew fn=td.iswrapper()?new FlatNew(td, new_tmp, isglobal):new FlatNew(td, new_tmp, temparray[i+1], isglobal);
420 FlatSetElementNode fsen=new FlatSetElementNode(tmp,index,new_tmp);
422 FlatOpNode fon=new FlatOpNode(index,index,tmpone,new Operation(Operation.ADD));
428 fcb.addFalseNext(fnop);
430 //Recursive call here
431 if ((i+2)<temparray.length) {
432 NodePair np2=generateNewArrayLoop(temparray, td.dereference(), new_tmp, i+1, isglobal);
433 fsen.addNext(np2.getBegin());
434 np2.getEnd().addNext(fon);
435 } else if (td.isArray()&&td.dereference().iswrapper()) {
436 NodePair np2=generateNewArrayLoop(temparray, td.dereference(), new_tmp, i+1, isglobal);
437 fsen.addNext(np2.getBegin());
438 np2.getEnd().addNext(fon);
443 return new NodePair(fln, fnop);
446 private NodePair flattenMethodInvokeNode(MethodInvokeNode min,TempDescriptor out_temp) {
447 TempDescriptor[] temps=new TempDescriptor[min.numArgs()];
450 TempDescriptor thisarg=null;
452 if (min.getExpression()!=null) {
453 thisarg=TempDescriptor.tempFactory("thisarg",min.getExpression().getType());
454 NodePair np=flattenExpressionNode(min.getExpression(),thisarg);
460 for(int i=0; i<min.numArgs(); i++) {
461 ExpressionNode en=min.getArg(i);
462 TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
464 NodePair np=flattenExpressionNode(en, td);
468 last.addNext(np.getBegin());
472 MethodDescriptor md=min.getMethod();
474 //Call to constructor
477 if(md.getReturnType()==null||md.getReturnType().isVoid())
478 fc=new FlatCall(md, null, thisarg, temps);
480 fc=new FlatCall(md, out_temp, thisarg, temps);
485 return new NodePair(first,fc);
488 private NodePair flattenFieldAccessNode(FieldAccessNode fan,TempDescriptor out_temp) {
489 TempDescriptor tmp=null;
490 if(fan.getExpression().getType().isStatic()) {
491 // static field dereference with class name
492 tmp = new TempDescriptor(fan.getExpression().getType().getClassDesc().getSymbol(), fan.getExpression().getType());
493 FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
494 return new NodePair(fn,fn);
496 tmp=TempDescriptor.tempFactory("temp",fan.getExpression().getType());
497 NodePair npe=flattenExpressionNode(fan.getExpression(),tmp);
498 FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
499 npe.getEnd().addNext(fn);
500 return new NodePair(npe.getBegin(),fn);
504 private NodePair flattenArrayAccessNode(ArrayAccessNode aan,TempDescriptor out_temp) {
505 TempDescriptor tmp=TempDescriptor.tempFactory("temp",aan.getExpression().getType());
506 TempDescriptor tmpindex=TempDescriptor.tempFactory("temp",aan.getIndex().getType());
507 NodePair npe=flattenExpressionNode(aan.getExpression(),tmp);
508 NodePair npi=flattenExpressionNode(aan.getIndex(),tmpindex);
509 TempDescriptor arraytmp=out_temp;
510 if (aan.iswrapper()) {
512 arraytmp=TempDescriptor.tempFactory("temp", aan.getExpression().getType().dereference());
514 FlatNode fn=new FlatElementNode(tmp,tmpindex,arraytmp);
515 npe.getEnd().addNext(npi.getBegin());
516 npi.getEnd().addNext(fn);
517 if (aan.iswrapper()) {
518 FlatFieldNode ffn=new FlatFieldNode((FieldDescriptor)aan.getExpression().getType().dereference().getClassDesc().getFieldTable().get("value") ,arraytmp,out_temp);
522 return new NodePair(npe.getBegin(),fn);
525 private NodePair flattenAssignmentNode(AssignmentNode an,TempDescriptor out_temp) {
527 // left side is variable
528 // left side is field
529 // left side is array
531 Operation base=an.getOperation().getBaseOp();
532 boolean pre=base==null||(base.getOp()!=Operation.POSTINC&&base.getOp()!=Operation.POSTDEC);
535 //rewrite the base operation
536 base=base.getOp()==Operation.POSTINC ? new Operation(Operation.ADD) : new Operation(Operation.SUB);
540 TempDescriptor src_tmp = src_tmp=an.getSrc()==null ? TempDescriptor.tempFactory("srctmp",an.getDest().getType()) : TempDescriptor.tempFactory("srctmp",an.getSrc().getType());
543 if (an.getSrc()!=null) {
544 if(an.getSrc().getEval() != null) {
545 first = last = new FlatLiteralNode(an.getSrc().getType(), an.getSrc().getEval().longValue(), src_tmp);
547 NodePair np_src=flattenExpressionNode(an.getSrc(),src_tmp);
548 first=np_src.getBegin();
549 last=np_src.getEnd();
552 FlatLiteralNode fln=new FlatLiteralNode(new TypeDescriptor(TypeDescriptor.INT),new Integer(1),src_tmp);
557 if (an.getDest().kind()==Kind.FieldAccessNode) {
558 //We are assigning an object field
560 FieldAccessNode fan=(FieldAccessNode)an.getDest();
561 ExpressionNode en=fan.getExpression();
562 TempDescriptor dst_tmp=null;
563 NodePair np_baseexp=null;
564 if(en.getType().isStatic()) {
565 // static field dereference with class name
566 dst_tmp = new TempDescriptor(en.getType().getClassDesc().getSymbol(), en.getType());
567 FlatNop nop=new FlatNop();
568 np_baseexp = new NodePair(nop,nop);
570 dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
571 np_baseexp=flattenExpressionNode(en, dst_tmp);
574 first=np_baseexp.getBegin();
576 last.addNext(np_baseexp.getBegin());
577 last=np_baseexp.getEnd();
579 //See if we need to perform an operation
581 //If it is a preinc we need to store the initial value
582 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
583 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
584 FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
588 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
589 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
590 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
591 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
596 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
603 FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
607 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
611 return new NodePair(first, last);
612 } else if (an.getDest().kind()==Kind.ArrayAccessNode) {
613 //We are assigning an array element
615 ArrayAccessNode aan=(ArrayAccessNode)an.getDest();
616 ExpressionNode en=aan.getExpression();
617 ExpressionNode enindex=aan.getIndex();
618 TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
619 TempDescriptor index_tmp=TempDescriptor.tempFactory("index",enindex.getType());
620 NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
621 NodePair np_indexexp=flattenExpressionNode(enindex, index_tmp);
623 first=np_baseexp.getBegin();
625 last.addNext(np_baseexp.getBegin());
626 np_baseexp.getEnd().addNext(np_indexexp.getBegin());
627 last=np_indexexp.getEnd();
629 //See if we need to perform an operation
631 //If it is a preinc we need to store the initial value
632 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
633 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
635 if (aan.iswrapper()) {
636 TypeDescriptor arrayeltype=aan.getExpression().getType().dereference();
637 TempDescriptor src_tmp3=TempDescriptor.tempFactory("src3",arrayeltype);
638 FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp3);
639 FlatFieldNode ffn=new FlatFieldNode((FieldDescriptor)arrayeltype.getClassDesc().getFieldTable().get("value"),src_tmp3,src_tmp2);
644 FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp2);
648 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
649 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
650 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
651 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
656 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
663 if (aan.iswrapper()) {
664 TypeDescriptor arrayeltype=aan.getExpression().getType().dereference();
665 TempDescriptor src_tmp3=TempDescriptor.tempFactory("src3",arrayeltype);
666 FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp3);
667 FlatSetFieldNode fsfn=new FlatSetFieldNode(src_tmp3,(FieldDescriptor)arrayeltype.getClassDesc().getFieldTable().get("value"),src_tmp);
672 FlatSetElementNode fsen=new FlatSetElementNode(dst_tmp, index_tmp, src_tmp);
677 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
681 return new NodePair(first, last);
682 } else if (an.getDest().kind()==Kind.NameNode) {
683 //We could be assigning a field or variable
684 NameNode nn=(NameNode)an.getDest();
687 if (nn.getExpression()!=null) {
689 FieldAccessNode fan=(FieldAccessNode)nn.getExpression();
690 ExpressionNode en=fan.getExpression();
691 TempDescriptor dst_tmp=null;
692 NodePair np_baseexp=null;
693 if(en.getType().isStatic()) {
694 // static field dereference with class name
695 dst_tmp = new TempDescriptor(en.getType().getClassDesc().getSymbol(), en.getType());
696 FlatNop nop=new FlatNop();
697 np_baseexp = new NodePair(nop,nop);
699 dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
700 np_baseexp=flattenExpressionNode(en, dst_tmp);
703 first=np_baseexp.getBegin();
705 last.addNext(np_baseexp.getBegin());
706 last=np_baseexp.getEnd();
708 //See if we need to perform an operation
710 //If it is a preinc we need to store the initial value
711 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
712 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
714 FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
719 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
720 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
721 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
722 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
727 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
735 FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
739 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
743 return new NodePair(first, last);
745 if (nn.getField()!=null) {
749 //See if we need to perform an operation
751 //If it is a preinc we need to store the initial value
752 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
753 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
755 FlatFieldNode ffn=new FlatFieldNode(nn.getField(), getTempforVar(nn.getVar()), src_tmp2);
764 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
765 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
766 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
767 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
772 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
779 FlatSetFieldNode fsfn=null;
780 if(nn.getClassDesc()!=null) {
781 // this is a static field access inside of a static block
782 fsfn=new FlatSetFieldNode(new TempDescriptor("sfsb", nn.getClassType()), nn.getField(), src_tmp);
784 fsfn=new FlatSetFieldNode(getTempforVar(nn.getVar()), nn.getField(), src_tmp);
793 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
797 return new NodePair(first, last);
800 //See if we need to perform an operation
803 //If it is a preinc we need to store the initial value
804 TempDescriptor src_tmp2=getTempforVar(nn.getVar());
805 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
807 FlatOpNode fon=new FlatOpNode(out_temp, src_tmp2, null, new Operation(Operation.ASSIGN));
816 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
817 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
818 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
819 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
827 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
837 FlatOpNode fon=new FlatOpNode(getTempforVar(nn.getVar()), src_tmp, null, new Operation(Operation.ASSIGN));
842 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
846 return new NodePair(first, last);
854 private NodePair flattenNameNode(NameNode nn,TempDescriptor out_temp) {
855 if (nn.getExpression()!=null) {
856 /* Hack - use subtree instead */
857 return flattenExpressionNode(nn.getExpression(),out_temp);
858 } else if (nn.getField()!=null) {
859 TempDescriptor tmp=getTempforVar(nn.getVar());
860 FlatFieldNode ffn=new FlatFieldNode(nn.getField(), tmp, out_temp);
861 return new NodePair(ffn,ffn);
863 TempDescriptor tmp=getTempforVar(nn.isTag() ? nn.getTagVar() : nn.getVar());
866 out_temp.setTag(tmp.getTag());
868 FlatOpNode fon=new FlatOpNode(out_temp, tmp, null, new Operation(Operation.ASSIGN));
869 return new NodePair(fon,fon);
873 private NodePair flattenOpNode(OpNode on,TempDescriptor out_temp) {
874 TempDescriptor temp_left=TempDescriptor.tempFactory("leftop",on.getLeft().getType());
875 TempDescriptor temp_right=null;
877 Operation op=on.getOp();
879 NodePair left=flattenExpressionNode(on.getLeft(),temp_left);
881 if (on.getRight()!=null) {
882 temp_right=TempDescriptor.tempFactory("rightop",on.getRight().getType());
883 right=flattenExpressionNode(on.getRight(),temp_right);
885 FlatNop nop=new FlatNop();
886 right=new NodePair(nop,nop);
889 if (op.getOp()==Operation.LOGIC_OR) {
890 /* Need to do shortcircuiting */
891 FlatCondBranch fcb=new FlatCondBranch(temp_left);
892 FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
893 FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
894 FlatNop fnop=new FlatNop();
895 left.getEnd().addNext(fcb);
896 fcb.addFalseNext(right.getBegin());
897 right.getEnd().addNext(fon2);
899 fcb.addTrueNext(fon1);
901 return new NodePair(left.getBegin(), fnop);
902 } else if (op.getOp()==Operation.LOGIC_AND) {
903 /* Need to do shortcircuiting */
904 FlatCondBranch fcb=new FlatCondBranch(temp_left);
905 FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
906 FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
907 FlatNop fnop=new FlatNop();
908 left.getEnd().addNext(fcb);
909 fcb.addTrueNext(right.getBegin());
910 right.getEnd().addNext(fon2);
912 fcb.addFalseNext(fon1);
914 return new NodePair(left.getBegin(), fnop);
915 } else if (op.getOp()==Operation.ADD&&on.getLeft().getType().isString()) {
916 //We have a string concatenate
917 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
918 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
919 FlatCall fc=new FlatCall(concatmd, out_temp, temp_left, new TempDescriptor[] {temp_right});
920 left.getEnd().addNext(right.getBegin());
921 right.getEnd().addNext(fc);
922 return new NodePair(left.getBegin(), fc);
925 FlatOpNode fon=new FlatOpNode(out_temp,temp_left,temp_right,op);
926 left.getEnd().addNext(right.getBegin());
927 right.getEnd().addNext(fon);
928 return new NodePair(left.getBegin(),fon);
931 private NodePair flattenExpressionNode(ExpressionNode en, TempDescriptor out_temp) {
933 case Kind.AssignmentNode:
934 return flattenAssignmentNode((AssignmentNode)en,out_temp);
937 return flattenCastNode((CastNode)en,out_temp);
939 case Kind.CreateObjectNode:
940 return flattenCreateObjectNode((CreateObjectNode)en,out_temp);
942 case Kind.FieldAccessNode:
943 return flattenFieldAccessNode((FieldAccessNode)en,out_temp);
945 case Kind.ArrayAccessNode:
946 return flattenArrayAccessNode((ArrayAccessNode)en,out_temp);
948 case Kind.LiteralNode:
949 return flattenLiteralNode((LiteralNode)en,out_temp);
951 case Kind.MethodInvokeNode:
952 return flattenMethodInvokeNode((MethodInvokeNode)en,out_temp);
955 return flattenNameNode((NameNode)en,out_temp);
958 return flattenOpNode((OpNode)en,out_temp);
960 case Kind.OffsetNode:
961 return flattenOffsetNode((OffsetNode)en,out_temp);
963 case Kind.TertiaryNode:
964 return flattenTertiaryNode((TertiaryNode)en,out_temp);
966 case Kind.InstanceOfNode:
967 return flattenInstanceOfNode((InstanceOfNode)en,out_temp);
969 case Kind.ArrayInitializerNode:
970 return flattenArrayInitializerNode((ArrayInitializerNode)en,out_temp);
975 private NodePair flattenDeclarationNode(DeclarationNode dn) {
976 VarDescriptor vd=dn.getVarDescriptor();
977 TempDescriptor td=getTempforVar(vd);
978 if (dn.getExpression()!=null)
979 return flattenExpressionNode(dn.getExpression(),td);
981 FlatNop fn=new FlatNop();
982 return new NodePair(fn,fn);
986 private NodePair flattenTagDeclarationNode(TagDeclarationNode dn) {
987 TagVarDescriptor tvd=dn.getTagVarDescriptor();
988 TagDescriptor tag=tvd.getTag();
989 TempDescriptor tmp=getTempforVar(tvd);
990 FlatTagDeclaration ftd=new FlatTagDeclaration(tag, tmp);
991 return new NodePair(ftd,ftd);
994 private TempDescriptor getTempforParam(Descriptor d) {
995 if (temptovar.containsKey(d))
996 return (TempDescriptor)temptovar.get(d);
998 if (d instanceof VarDescriptor) {
999 VarDescriptor vd=(VarDescriptor)d;
1000 TempDescriptor td=TempDescriptor.paramtempFactory(vd.getName(),vd.getType());
1001 temptovar.put(vd,td);
1003 } else if (d instanceof TagVarDescriptor) {
1004 TagVarDescriptor tvd=(TagVarDescriptor)d;
1005 TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
1006 TempDescriptor td=TempDescriptor.paramtempFactory(tvd.getName(), tagtype, tvd.getTag());
1007 temptovar.put(tvd,td);
1009 } else throw new Error("Unreconized Descriptor");
1013 private TempDescriptor getTempforVar(Descriptor d) {
1014 if (temptovar.containsKey(d))
1015 return (TempDescriptor)temptovar.get(d);
1017 if (d instanceof VarDescriptor) {
1018 VarDescriptor vd=(VarDescriptor)d;
1019 TempDescriptor td=TempDescriptor.tempFactory(vd.getName(), vd.getType());
1020 temptovar.put(vd,td);
1022 } else if (d instanceof TagVarDescriptor) {
1023 TagVarDescriptor tvd=(TagVarDescriptor)d;
1024 //BUGFIX TAGTYPE - add next line, modify following
1025 //line to tag this new type descriptor, modify
1026 //TempDescriptor constructor & factory to set type
1027 //using this Type To test, use any program with tags
1028 TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
1029 TempDescriptor td=TempDescriptor.tempFactory(tvd.getName(),tagtype, tvd.getTag());
1030 temptovar.put(tvd,td);
1032 } else throw new Error("Unrecognized Descriptor");
1036 private NodePair flattenIfStatementNode(IfStatementNode isn) {
1037 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.BOOLEAN));
1038 NodePair cond=flattenExpressionNode(isn.getCondition(),cond_temp);
1039 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1040 NodePair true_np=flattenBlockNode(isn.getTrueBlock());
1042 FlatNop nopend=new FlatNop();
1044 if (isn.getFalseBlock()!=null)
1045 false_np=flattenBlockNode(isn.getFalseBlock());
1047 FlatNop nop=new FlatNop();
1048 false_np=new NodePair(nop,nop);
1051 cond.getEnd().addNext(fcb);
1052 fcb.addTrueNext(true_np.getBegin());
1053 fcb.addFalseNext(false_np.getBegin());
1054 if (true_np.getEnd()!=null)
1055 true_np.getEnd().addNext(nopend);
1056 if (false_np.getEnd()!=null)
1057 false_np.getEnd().addNext(nopend);
1058 if (nopend.numPrev()==0)
1059 return new NodePair(cond.getBegin(), null);
1061 return new NodePair(cond.getBegin(), nopend);
1064 private NodePair flattenSwitchStatementNode(SwitchStatementNode ssn) {
1065 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.INT));
1066 NodePair cond=flattenExpressionNode(ssn.getCondition(),cond_temp);
1067 FlatNop nopend=new FlatNop();
1068 NodePair sbody = flattenSwitchBodyNode(ssn.getSwitchBody(), cond_temp, nopend);
1070 cond.getEnd().addNext(sbody.getBegin());
1072 return new NodePair(cond.getBegin(), sbody.getEnd());
1075 private NodePair flattenSwitchBodyNode(BlockNode bn, TempDescriptor cond_temp, FlatNode endnode) {
1076 FlatNode begin=null;
1077 FlatNode end=endnode;
1078 NodePair prev_true_branch = null;
1079 NodePair prev_false_branch = null;
1080 for(int i=0; i<bn.size(); i++) {
1081 SwitchBlockNode sbn = (SwitchBlockNode)bn.get(i);
1082 HashSet oldbs=breakset;
1083 breakset=new HashSet();
1085 NodePair body=flattenBlockNode(sbn.getSwitchBlockStatement());
1086 Vector<SwitchLabelNode> slnv = sbn.getSwitchConditions();
1087 FlatNode cond_begin = null;
1088 NodePair prev_fnp = null;
1089 for(int j = 0; j < slnv.size(); j++) {
1090 SwitchLabelNode sln = slnv.elementAt(j);
1091 NodePair left = null;
1092 NodePair false_np = null;
1093 if(sln.isDefault()) {
1096 TempDescriptor cond_tmp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1097 TempDescriptor temp_left=TempDescriptor.tempFactory("leftop", sln.getCondition().getType());
1098 Operation op=new Operation(Operation.EQUAL);
1099 left=flattenExpressionNode(sln.getCondition(), temp_left);
1100 FlatOpNode fon=new FlatOpNode(cond_tmp, temp_left, cond_temp, op);
1101 left.getEnd().addNext(fon);
1103 FlatCondBranch fcb=new FlatCondBranch(cond_tmp);
1104 fcb.setTrueProb(State.TRUEPROB);
1106 FlatNop nop=new FlatNop();
1107 false_np=new NodePair(nop,nop);
1110 fcb.addTrueNext(body.getBegin());
1111 fcb.addFalseNext(false_np.getBegin());
1113 if((prev_fnp != null) && (prev_fnp.getEnd() != null)) {
1114 prev_fnp.getEnd().addNext(left.getBegin());
1116 prev_fnp = false_np;
1119 begin = left.getBegin();
1121 if(cond_begin == null) {
1122 cond_begin = left.getBegin();
1125 if((prev_false_branch != null) && (prev_false_branch.getEnd() != null)) {
1126 prev_false_branch.getEnd().addNext(cond_begin);
1128 prev_false_branch = prev_fnp;
1129 if((prev_true_branch != null) && (prev_true_branch.getEnd() != null)) {
1130 prev_true_branch.getEnd().addNext(body.getBegin());
1132 prev_true_branch = body;
1133 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1134 FlatNode fn=(FlatNode)breakit.next();
1136 fn.addNext(endnode);
1140 if((prev_true_branch != null) && (prev_true_branch.getEnd() != null)) {
1141 prev_true_branch.getEnd().addNext(endnode);
1143 if((prev_false_branch != null) && (prev_false_branch.getEnd() != null)) {
1144 prev_false_branch.getEnd().addNext(endnode);
1147 end=begin=new FlatNop();
1149 return new NodePair(begin,end);
1152 private NodePair flattenLoopNode(LoopNode ln) {
1153 HashSet oldbs=breakset;
1154 HashSet oldcs=continueset;
1155 breakset=new HashSet();
1156 continueset=new HashSet();
1158 if (ln.getType()==LoopNode.FORLOOP) {
1159 NodePair initializer=flattenBlockNode(ln.getInitializer());
1160 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1161 NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
1162 NodePair update=flattenBlockNode(ln.getUpdate());
1163 NodePair body=flattenBlockNode(ln.getBody());
1164 FlatNode begin=initializer.getBegin();
1165 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1166 fcb.setTrueProb(State.TRUEPROB);
1168 FlatNop nopend=new FlatNop();
1169 FlatBackEdge backedge=new FlatBackEdge();
1171 FlatNop nop2=new FlatNop();
1172 initializer.getEnd().addNext(nop2);
1173 nop2.addNext(condition.getBegin());
1174 if (body.getEnd()!=null)
1175 body.getEnd().addNext(update.getBegin());
1176 update.getEnd().addNext(backedge);
1177 backedge.addNext(condition.getBegin());
1178 condition.getEnd().addNext(fcb);
1179 fcb.addFalseNext(nopend);
1180 fcb.addTrueNext(body.getBegin());
1181 for(Iterator contit=continueset.iterator();contit.hasNext();) {
1182 FlatNode fn=(FlatNode)contit.next();
1184 fn.addNext(update.getBegin());
1186 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1187 FlatNode fn=(FlatNode)breakit.next();
1193 return new NodePair(begin,nopend);
1194 } else if (ln.getType()==LoopNode.WHILELOOP) {
1195 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1196 NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
1197 NodePair body=flattenBlockNode(ln.getBody());
1198 FlatNode begin=condition.getBegin();
1199 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1200 fcb.setTrueProb(State.TRUEPROB);
1202 FlatNop nopend=new FlatNop();
1203 FlatBackEdge backedge=new FlatBackEdge();
1205 if (body.getEnd()!=null)
1206 body.getEnd().addNext(backedge);
1207 backedge.addNext(condition.getBegin());
1209 condition.getEnd().addNext(fcb);
1210 fcb.addFalseNext(nopend);
1211 fcb.addTrueNext(body.getBegin());
1213 for(Iterator contit=continueset.iterator();contit.hasNext();) {
1214 FlatNode fn=(FlatNode)contit.next();
1216 fn.addNext(backedge);
1218 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1219 FlatNode fn=(FlatNode)breakit.next();
1225 return new NodePair(begin,nopend);
1226 } else if (ln.getType()==LoopNode.DOWHILELOOP) {
1227 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1228 NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
1229 NodePair body=flattenBlockNode(ln.getBody());
1230 FlatNode begin=body.getBegin();
1231 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1232 fcb.setTrueProb(State.TRUEPROB);
1234 FlatNop nopend=new FlatNop();
1235 FlatBackEdge backedge=new FlatBackEdge();
1237 if (body.getEnd()!=null)
1238 body.getEnd().addNext(condition.getBegin());
1239 condition.getEnd().addNext(fcb);
1240 fcb.addFalseNext(nopend);
1241 fcb.addTrueNext(backedge);
1242 backedge.addNext(body.getBegin());
1244 for(Iterator contit=continueset.iterator();contit.hasNext();) {
1245 FlatNode fn=(FlatNode)contit.next();
1247 fn.addNext(condition.getBegin());
1249 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1250 FlatNode fn=(FlatNode)breakit.next();
1256 return new NodePair(begin,nopend);
1257 } else throw new Error();
1260 private NodePair flattenReturnNode(ReturnNode rntree) {
1261 TempDescriptor retval=null;
1263 if (rntree.getReturnExpression()!=null) {
1264 retval=TempDescriptor.tempFactory("ret_value", rntree.getReturnExpression().getType());
1265 cond=flattenExpressionNode(rntree.getReturnExpression(),retval);
1268 FlatReturnNode rnflat=new FlatReturnNode(retval);
1271 if ((state.THREAD||state.MGC)&&currmd.getModifiers().isSynchronized()) {
1272 MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
1273 TempDescriptor thistd=null;
1274 if(currmd.getModifiers().isStatic()) {
1275 // need to lock the Class object
1276 thistd=new TempDescriptor("classobj", currmd.getClassDesc());
1279 thistd=getTempforVar(currmd.getThis());
1281 FlatCall fc=new FlatCall(memd, null, thistd, new TempDescriptor[0]);
1285 if (state.DSM&&currmd.getModifiers().isAtomic()) {
1286 FlatAtomicExitNode faen=new FlatAtomicExitNode(curran);
1292 cond.getEnd().addNext(ln);
1293 return new NodePair(cond.getBegin(),null);
1295 return new NodePair(ln,null);
1298 private NodePair flattenTaskExitNode(TaskExitNode ten) {
1299 FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.TASKEXIT);
1300 ffan.setTaskExitIndex(ten.getTaskExitIndex());
1301 updateFlagActionNode(ffan, ten.getFlagEffects());
1302 NodePair fcn=flattenConstraintCheck(ten.getChecks());
1303 ffan.addNext(fcn.getBegin());
1304 FlatReturnNode rnflat=new FlatReturnNode(null);
1306 fcn.getEnd().addNext(rnflat);
1307 return new NodePair(ffan, null);
1310 private NodePair flattenConstraintCheck(Vector ccs) {
1311 FlatNode begin=new FlatNop();
1313 return new NodePair(begin,begin);
1314 FlatNode last=begin;
1315 for(int i=0; i<ccs.size(); i++) {
1316 ConstraintCheck cc=(ConstraintCheck) ccs.get(i);
1317 /* Flatten the arguments */
1318 TempDescriptor[] temps=new TempDescriptor[cc.numArgs()];
1319 String[] vars=new String[cc.numArgs()];
1320 for(int j=0; j<cc.numArgs(); j++) {
1321 ExpressionNode en=cc.getArg(j);
1322 TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
1324 vars[j]=cc.getVar(j);
1325 NodePair np=flattenExpressionNode(en, td);
1326 last.addNext(np.getBegin());
1330 FlatCheckNode fcn=new FlatCheckNode(cc.getSpec(), vars, temps);
1334 return new NodePair(begin,last);
1337 private NodePair flattenSubBlockNode(SubBlockNode sbn) {
1338 return flattenBlockNode(sbn.getBlockNode());
1341 private NodePair flattenSynchronizedNode(SynchronizedNode sbn) {
1342 TempDescriptor montmp=null;
1343 FlatNode first = null;
1344 FlatNode end = null;
1345 if(sbn.getExpr() instanceof ClassTypeNode) {
1346 montmp=new TempDescriptor("classobj", ((ClassTypeNode)sbn.getExpr()).getType().getClassDesc());
1348 montmp = TempDescriptor.tempFactory("monitor",sbn.getExpr().getType());
1349 NodePair npexp=flattenExpressionNode(sbn.getExpr(), montmp);
1350 first = npexp.getBegin();
1351 end = npexp.getEnd();
1353 NodePair npblock=flattenBlockNode(sbn.getBlockNode());
1355 MethodDescriptor menmd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorEnter");
1356 FlatCall fcen=new FlatCall(menmd, null, montmp, new TempDescriptor[0]);
1358 MethodDescriptor mexmd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
1359 FlatCall fcex=new FlatCall(mexmd, null, montmp, new TempDescriptor[0]);
1366 fcen.addNext(npblock.getBegin());
1367 npblock.getEnd().addNext(fcex);
1368 return new NodePair(first, fcex);
1371 private NodePair flattenAtomicNode(AtomicNode sbn) {
1372 NodePair np=flattenBlockNode(sbn.getBlockNode());
1373 FlatAtomicEnterNode faen=new FlatAtomicEnterNode();
1374 FlatAtomicExitNode faexn=new FlatAtomicExitNode(faen);
1375 faen.addNext(np.getBegin());
1376 np.getEnd().addNext(faexn);
1377 return new NodePair(faen, faexn);
1380 private NodePair flattenGenReachNode( GenReachNode grn ) {
1381 FlatGenReachNode fgrn = new FlatGenReachNode( grn.getGraphName() );
1382 return new NodePair( fgrn, fgrn );
1385 private NodePair flattenSESENode(SESENode sn) {
1386 if( sn.isStart() ) {
1387 FlatSESEEnterNode fsen=new FlatSESEEnterNode(sn);
1388 sn.setFlatEnter(fsen);
1389 return new NodePair(fsen, fsen);
1392 FlatSESEExitNode fsexn=new FlatSESEExitNode(sn);
1393 sn.setFlatExit(fsexn);
1394 FlatSESEEnterNode fsen=sn.getStart().getFlatEnter();
1395 fsexn.setFlatEnter(fsen);
1396 sn.getStart().getFlatEnter().setFlatExit( fsexn );
1398 return new NodePair(fsexn, fsexn);
1401 private NodePair flattenContinueBreakNode(ContinueBreakNode cbn) {
1402 FlatNop fn=new FlatNop();
1406 continueset.add(fn);
1407 return new NodePair(fn,null);
1410 private NodePair flattenInstanceOfNode(InstanceOfNode tn, TempDescriptor out_temp) {
1411 TempDescriptor expr_temp=TempDescriptor.tempFactory("expr",tn.getExpr().getType());
1412 NodePair cond=flattenExpressionNode(tn.getExpr(), expr_temp);
1413 FlatInstanceOfNode fion=new FlatInstanceOfNode(tn.getExprType(), expr_temp, out_temp);
1414 cond.getEnd().addNext(fion);
1415 return new NodePair(cond.getBegin(),fion);
1418 private NodePair flattenArrayInitializerNode(ArrayInitializerNode ain, TempDescriptor out_temp) {
1419 boolean isGlobal = false;
1420 String disjointId = null;
1421 // get the type the array to be initialized
1422 TypeDescriptor td = ain.getType();
1424 // create a new array of size equal to the array initializer
1425 FlatNode first=null;
1427 TempDescriptor tmp=TempDescriptor.tempFactory("arg", new TypeDescriptor(TypeDescriptor.INT));
1428 FlatLiteralNode fln_tmp=new FlatLiteralNode(tmp.getType(), new Integer(ain.numVarInitializers()), tmp);
1429 first = last=fln_tmp;
1431 // create the new array
1432 FlatNew fn=new FlatNew(td, out_temp, tmp, isGlobal, disjointId);
1436 // initialize the new array
1437 for(int i = 0; i < ain.numVarInitializers(); i++) {
1438 ExpressionNode var_init_node = ain.getVarInitializer(i);
1439 TempDescriptor tmp_toinit = out_temp;
1440 TempDescriptor tmp_init=TempDescriptor.tempFactory("array_init", td.dereference());
1442 TempDescriptor index=TempDescriptor.tempFactory("index", new TypeDescriptor(TypeDescriptor.INT));
1443 FlatLiteralNode fln=new FlatLiteralNode(index.getType(), new Integer(i), index);
1444 // calculate the initial value
1445 NodePair np_init = flattenExpressionNode(var_init_node, tmp_init);
1446 // TODO wrapper class process is missing now
1447 /*if(td.isArray() && td.dereference().iswrapper()) {
1449 FlatSetElementNode fsen=new FlatSetElementNode(tmp_toinit, index, tmp_init);
1451 fln.addNext(np_init.getBegin());
1452 np_init.getEnd().addNext(fsen);
1456 return new NodePair(first, last);
1459 private NodePair flattenTertiaryNode(TertiaryNode tn, TempDescriptor out_temp) {
1460 TempDescriptor cond_temp=TempDescriptor.tempFactory("tert_cond",new TypeDescriptor(TypeDescriptor.BOOLEAN));
1461 TempDescriptor true_temp=TempDescriptor.tempFactory("tert_true",tn.getTrueExpr().getType());
1462 TempDescriptor fals_temp=TempDescriptor.tempFactory("tert_fals",tn.getFalseExpr().getType());
1464 NodePair cond=flattenExpressionNode(tn.getCond(),cond_temp);
1465 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1467 NodePair trueExpr=flattenExpressionNode(tn.getTrueExpr(),true_temp);
1468 FlatOpNode fonT=new FlatOpNode(out_temp, true_temp, null, new Operation(Operation.ASSIGN));
1470 NodePair falseExpr=flattenExpressionNode(tn.getFalseExpr(),fals_temp);
1471 FlatOpNode fonF=new FlatOpNode(out_temp, fals_temp, null, new Operation(Operation.ASSIGN));
1473 FlatNop nopend=new FlatNop();
1475 cond.getEnd().addNext(fcb);
1477 fcb.addTrueNext(trueExpr.getBegin());
1478 fcb.addFalseNext(falseExpr.getBegin());
1480 trueExpr.getEnd().addNext(fonT);
1481 fonT.addNext(nopend);
1483 falseExpr.getEnd().addNext(fonF);
1484 fonF.addNext(nopend);
1486 return new NodePair(cond.getBegin(), nopend);
1489 private NodePair flattenBlockStatementNode(BlockStatementNode bsn) {
1490 switch(bsn.kind()) {
1491 case Kind.BlockExpressionNode:
1492 return flattenBlockExpressionNode((BlockExpressionNode)bsn);
1494 case Kind.DeclarationNode:
1495 return flattenDeclarationNode((DeclarationNode)bsn);
1497 case Kind.TagDeclarationNode:
1498 return flattenTagDeclarationNode((TagDeclarationNode)bsn);
1500 case Kind.IfStatementNode:
1501 return flattenIfStatementNode((IfStatementNode)bsn);
1503 case Kind.SwitchStatementNode:
1504 return flattenSwitchStatementNode((SwitchStatementNode)bsn);
1507 return flattenLoopNode((LoopNode)bsn);
1509 case Kind.ReturnNode:
1510 return flattenReturnNode((IR.Tree.ReturnNode)bsn);
1512 case Kind.TaskExitNode:
1513 return flattenTaskExitNode((IR.Tree.TaskExitNode)bsn);
1515 case Kind.SubBlockNode:
1516 return flattenSubBlockNode((SubBlockNode)bsn);
1518 case Kind.AtomicNode:
1519 return flattenAtomicNode((AtomicNode)bsn);
1521 case Kind.SynchronizedNode:
1522 return flattenSynchronizedNode((SynchronizedNode)bsn);
1525 return flattenSESENode((SESENode)bsn);
1527 case Kind.GenReachNode:
1528 return flattenGenReachNode((GenReachNode)bsn);
1530 case Kind.ContinueBreakNode:
1531 return flattenContinueBreakNode((ContinueBreakNode)bsn);