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=getTempforVar(currmd.getThis());
192 FlatCall fc=new FlatCall(memd, null, thistd, new TempDescriptor[0]);
195 if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
196 MethodDescriptor memdex=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
197 FlatCall fcunlock=new FlatCall(memdex, null, thistd, new TempDescriptor[0]);
198 np.getEnd().addNext(fcunlock);
199 FlatNode rnflat=spliceReturn(fcunlock);
202 } else if (state.DSM&&currmd.getModifiers().isAtomic()) {
205 if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
206 FlatAtomicExitNode aen=new FlatAtomicExitNode(curran);
207 np.getEnd().addNext(aen);
208 FlatNode rnflat=spliceReturn(aen);
212 } else if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
213 FlatNode rnflat=null;
214 if( spliceInImplicitMain ) {
215 np.getEnd().addNext(spliceExit);
216 rnflat=spliceReturn(spliceExit);
218 rnflat=spliceReturn(np.getEnd());
221 } else if (np.getEnd()!=null) {
222 if( spliceInImplicitMain ) {
223 FlatReturnNode rnflat=(FlatReturnNode)np.getEnd();
224 np.getEnd().addNext(spliceExit);
225 spliceExit.addNext(fe);
229 if( spliceInImplicitMain ) {
230 spliceSESE.addNext(fn);
234 FlatMethod fm=new FlatMethod(currmd, fe);
236 if (!currmd.isStatic())
237 fm.addParameterTemp(getTempforParam(currmd.getThis()));
238 for(int i=0; i<currmd.numParameters(); i++) {
239 fm.addParameterTemp(getTempforParam(currmd.getParameter(i)));
242 state.addFlatCode(currmd,fm);
246 private NodePair flattenBlockNode(BlockNode bn) {
249 for(int i=0; i<bn.size(); i++) {
250 NodePair np=flattenBlockStatementNode(bn.get(i));
251 FlatNode np_begin=np.getBegin();
252 FlatNode np_end=np.getEnd();
259 end.addNext(np_begin);
261 return new NodePair(begin, null);
267 end=begin=new FlatNop();
269 return new NodePair(begin,end);
272 private NodePair flattenBlockExpressionNode(BlockExpressionNode en) {
273 //System.out.println("DEBUG -> inside flattenBlockExpressionNode\n");
274 TempDescriptor tmp=TempDescriptor.tempFactory("neverused",en.getExpression().getType());
275 return flattenExpressionNode(en.getExpression(),tmp);
278 private NodePair flattenCastNode(CastNode cn,TempDescriptor out_temp) {
279 TempDescriptor tmp=TempDescriptor.tempFactory("tocast",cn.getExpression().getType());
280 NodePair np=flattenExpressionNode(cn.getExpression(), tmp);
281 FlatCastNode fcn=new FlatCastNode(cn.getType(), tmp, out_temp);
282 np.getEnd().addNext(fcn);
283 return new NodePair(np.getBegin(),fcn);
286 private NodePair flattenLiteralNode(LiteralNode ln,TempDescriptor out_temp) {
287 FlatLiteralNode fln=new FlatLiteralNode(ln.getType(), ln.getValue(), out_temp);
288 return new NodePair(fln,fln);
291 private NodePair flattenOffsetNode(OffsetNode ofn, TempDescriptor out_temp) {
292 FlatOffsetNode fln = new FlatOffsetNode(ofn.getClassType(), ofn.getField(), out_temp);
293 return new NodePair(fln, fln);
296 private NodePair flattenCreateObjectNode(CreateObjectNode con,TempDescriptor out_temp) {
297 TypeDescriptor td=con.getType();
299 FlatNode fn=new FlatNew(td, out_temp, con.isGlobal(), con.getDisjointId());
301 //handle wrapper fields
302 ClassDescriptor cd=td.getClassDesc();
303 for(Iterator fieldit=cd.getFields();fieldit.hasNext();) {
304 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
305 if (fd.getType().iswrapper()) {
306 TempDescriptor wrap_tmp=TempDescriptor.tempFactory("wrapper_obj",fd.getType());
307 FlatNode fnwrapper=new FlatNew(fd.getType(), wrap_tmp, con.isGlobal());
308 FlatSetFieldNode fsfn=new FlatSetFieldNode(out_temp, fd, wrap_tmp);
309 last.addNext(fnwrapper);
310 fnwrapper.addNext(fsfn);
315 TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
318 for(int i=0; i<con.numArgs(); i++) {
319 ExpressionNode en=con.getArg(i);
320 TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
322 NodePair np=flattenExpressionNode(en, tmp);
323 last.addNext(np.getBegin());
326 MethodDescriptor md=con.getConstructor();
327 //Call to constructor
328 FlatCall fc=new FlatCall(md, null, out_temp, temps);
331 if (td.getClassDesc().hasFlags()) {
332 // if (con.getFlagEffects()!=null) {
333 FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.NEWOBJECT);
334 FlagEffects fes=con.getFlagEffects();
335 TempDescriptor flagtemp=out_temp;
337 for(int j=0; j<fes.numEffects(); j++) {
338 FlagEffect fe=fes.getEffect(j);
339 ffan.addFlagAction(flagtemp, fe.getFlag(), fe.getStatus());
341 for(int j=0; j<fes.numTagEffects(); j++) {
342 TagEffect te=fes.getTagEffect(j);
343 TempDescriptor tagtemp=getTempforVar(te.getTag());
345 ffan.addTagAction(flagtemp, te.getTag().getTag(), tagtemp, te.getStatus());
348 ffan.addFlagAction(flagtemp, null, false);
353 return new NodePair(fn,last);
355 if(con.getArrayInitializer() == null) {
358 TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
359 for (int i=0; i<con.numArgs(); i++) {
360 ExpressionNode en=con.getArg(i);
361 TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
363 NodePair np=flattenExpressionNode(en, tmp);
367 last.addNext(np.getBegin());
370 TempDescriptor tmp2=(i==0) ?
372 TempDescriptor.tempFactory("arg",en.getType());
374 FlatNew fn=new FlatNew(td, out_temp, temps[0], con.isGlobal(), con.getDisjointId());
376 if (temps.length>1) {
377 NodePair np=generateNewArrayLoop(temps, td.dereference(), out_temp, 0, con.isGlobal());
378 fn.addNext(np.getBegin());
379 return new NodePair(first,np.getEnd());
380 } else if (td.isArray()&&td.dereference().iswrapper()) {
381 NodePair np=generateNewArrayLoop(temps, td.dereference(), out_temp, 0, con.isGlobal());
382 fn.addNext(np.getBegin());
383 return new NodePair(first,np.getEnd());
385 return new NodePair(first, fn);
386 } else if(state.MGC) {
387 // array creation with initializers
388 return flattenArrayInitializerNode(con.getArrayInitializer(), out_temp);
394 private NodePair generateNewArrayLoop(TempDescriptor[] temparray, TypeDescriptor td, TempDescriptor tmp, int i, boolean isglobal) {
395 TempDescriptor index=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
396 TempDescriptor tmpone=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
397 FlatNop fnop=new FlatNop(); //last node
400 FlatLiteralNode fln=new FlatLiteralNode(index.getType(),new Integer(0),index);
402 FlatLiteralNode fln2=new FlatLiteralNode(tmpone.getType(),new Integer(1),tmpone);
404 TempDescriptor tmpbool=TempDescriptor.tempFactory("comp",new TypeDescriptor(TypeDescriptor.BOOLEAN));
406 FlatOpNode fcomp=new FlatOpNode(tmpbool,index,temparray[i],new Operation(Operation.LT));
407 FlatCondBranch fcb=new FlatCondBranch(tmpbool);
408 fcb.setTrueProb(State.TRUEPROB);
411 TempDescriptor new_tmp=TempDescriptor.tempFactory("tmp",td);
412 FlatNew fn=td.iswrapper()?new FlatNew(td, new_tmp, isglobal):new FlatNew(td, new_tmp, temparray[i+1], isglobal);
413 FlatSetElementNode fsen=new FlatSetElementNode(tmp,index,new_tmp);
415 FlatOpNode fon=new FlatOpNode(index,index,tmpone,new Operation(Operation.ADD));
421 fcb.addFalseNext(fnop);
423 //Recursive call here
424 if ((i+2)<temparray.length) {
425 NodePair np2=generateNewArrayLoop(temparray, td.dereference(), new_tmp, i+1, isglobal);
426 fsen.addNext(np2.getBegin());
427 np2.getEnd().addNext(fon);
428 } else if (td.isArray()&&td.dereference().iswrapper()) {
429 NodePair np2=generateNewArrayLoop(temparray, td.dereference(), new_tmp, i+1, isglobal);
430 fsen.addNext(np2.getBegin());
431 np2.getEnd().addNext(fon);
436 return new NodePair(fln, fnop);
439 private NodePair flattenMethodInvokeNode(MethodInvokeNode min,TempDescriptor out_temp) {
440 TempDescriptor[] temps=new TempDescriptor[min.numArgs()];
443 TempDescriptor thisarg=null;
445 if (min.getExpression()!=null) {
446 thisarg=TempDescriptor.tempFactory("thisarg",min.getExpression().getType());
447 NodePair np=flattenExpressionNode(min.getExpression(),thisarg);
453 for(int i=0; i<min.numArgs(); i++) {
454 ExpressionNode en=min.getArg(i);
455 TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
457 NodePair np=flattenExpressionNode(en, td);
461 last.addNext(np.getBegin());
465 MethodDescriptor md=min.getMethod();
467 //Call to constructor
470 if(md.getReturnType()==null||md.getReturnType().isVoid())
471 fc=new FlatCall(md, null, thisarg, temps);
473 fc=new FlatCall(md, out_temp, thisarg, temps);
478 return new NodePair(first,fc);
481 private NodePair flattenFieldAccessNode(FieldAccessNode fan,TempDescriptor out_temp) {
482 TempDescriptor tmp=null;
483 if(fan.getExpression().getType().isStatic()) {
484 // static field dereference with class name
485 tmp = new TempDescriptor(fan.getExpression().getType().getClassDesc().getSymbol(), fan.getExpression().getType());
486 FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
487 return new NodePair(fn,fn);
489 tmp=TempDescriptor.tempFactory("temp",fan.getExpression().getType());
490 NodePair npe=flattenExpressionNode(fan.getExpression(),tmp);
491 FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
492 npe.getEnd().addNext(fn);
493 return new NodePair(npe.getBegin(),fn);
497 private NodePair flattenArrayAccessNode(ArrayAccessNode aan,TempDescriptor out_temp) {
498 TempDescriptor tmp=TempDescriptor.tempFactory("temp",aan.getExpression().getType());
499 TempDescriptor tmpindex=TempDescriptor.tempFactory("temp",aan.getIndex().getType());
500 NodePair npe=flattenExpressionNode(aan.getExpression(),tmp);
501 NodePair npi=flattenExpressionNode(aan.getIndex(),tmpindex);
502 TempDescriptor arraytmp=out_temp;
503 if (aan.iswrapper()) {
505 arraytmp=TempDescriptor.tempFactory("temp", aan.getExpression().getType().dereference());
507 FlatNode fn=new FlatElementNode(tmp,tmpindex,arraytmp);
508 npe.getEnd().addNext(npi.getBegin());
509 npi.getEnd().addNext(fn);
510 if (aan.iswrapper()) {
511 FlatFieldNode ffn=new FlatFieldNode((FieldDescriptor)aan.getExpression().getType().dereference().getClassDesc().getFieldTable().get("value") ,arraytmp,out_temp);
515 return new NodePair(npe.getBegin(),fn);
518 private NodePair flattenAssignmentNode(AssignmentNode an,TempDescriptor out_temp) {
520 // left side is variable
521 // left side is field
522 // left side is array
524 Operation base=an.getOperation().getBaseOp();
525 boolean pre=base==null||(base.getOp()!=Operation.POSTINC&&base.getOp()!=Operation.POSTDEC);
528 //rewrite the base operation
529 base=base.getOp()==Operation.POSTINC ? new Operation(Operation.ADD) : new Operation(Operation.SUB);
533 TempDescriptor src_tmp = src_tmp=an.getSrc()==null ? TempDescriptor.tempFactory("srctmp",an.getDest().getType()) : TempDescriptor.tempFactory("srctmp",an.getSrc().getType());
536 if (an.getSrc()!=null) {
537 if(an.getSrc().getEval() != null) {
538 first = last = new FlatLiteralNode(an.getSrc().getType(), an.getSrc().getEval().longValue(), src_tmp);
540 NodePair np_src=flattenExpressionNode(an.getSrc(),src_tmp);
541 first=np_src.getBegin();
542 last=np_src.getEnd();
545 FlatLiteralNode fln=new FlatLiteralNode(new TypeDescriptor(TypeDescriptor.INT),new Integer(1),src_tmp);
550 if (an.getDest().kind()==Kind.FieldAccessNode) {
551 //We are assigning an object field
553 FieldAccessNode fan=(FieldAccessNode)an.getDest();
554 ExpressionNode en=fan.getExpression();
555 TempDescriptor dst_tmp=null;
556 NodePair np_baseexp=null;
557 if(en.getType().isStatic()) {
558 // static field dereference with class name
559 dst_tmp = new TempDescriptor(en.getType().getClassDesc().getSymbol(), en.getType());
560 FlatNop nop=new FlatNop();
561 np_baseexp = new NodePair(nop,nop);
563 dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
564 np_baseexp=flattenExpressionNode(en, dst_tmp);
567 first=np_baseexp.getBegin();
569 last.addNext(np_baseexp.getBegin());
570 last=np_baseexp.getEnd();
572 //See if we need to perform an operation
574 //If it is a preinc we need to store the initial value
575 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
576 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
577 FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
581 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
582 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
583 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
584 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
589 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
596 FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
600 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
604 return new NodePair(first, last);
605 } else if (an.getDest().kind()==Kind.ArrayAccessNode) {
606 //We are assigning an array element
608 ArrayAccessNode aan=(ArrayAccessNode)an.getDest();
609 ExpressionNode en=aan.getExpression();
610 ExpressionNode enindex=aan.getIndex();
611 TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
612 TempDescriptor index_tmp=TempDescriptor.tempFactory("index",enindex.getType());
613 NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
614 NodePair np_indexexp=flattenExpressionNode(enindex, index_tmp);
616 first=np_baseexp.getBegin();
618 last.addNext(np_baseexp.getBegin());
619 np_baseexp.getEnd().addNext(np_indexexp.getBegin());
620 last=np_indexexp.getEnd();
622 //See if we need to perform an operation
624 //If it is a preinc we need to store the initial value
625 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
626 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
628 if (aan.iswrapper()) {
629 TypeDescriptor arrayeltype=aan.getExpression().getType().dereference();
630 TempDescriptor src_tmp3=TempDescriptor.tempFactory("src3",arrayeltype);
631 FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp3);
632 FlatFieldNode ffn=new FlatFieldNode((FieldDescriptor)arrayeltype.getClassDesc().getFieldTable().get("value"),src_tmp3,src_tmp2);
637 FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp2);
641 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
642 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
643 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
644 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
649 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
656 if (aan.iswrapper()) {
657 TypeDescriptor arrayeltype=aan.getExpression().getType().dereference();
658 TempDescriptor src_tmp3=TempDescriptor.tempFactory("src3",arrayeltype);
659 FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp3);
660 FlatSetFieldNode fsfn=new FlatSetFieldNode(src_tmp3,(FieldDescriptor)arrayeltype.getClassDesc().getFieldTable().get("value"),src_tmp);
665 FlatSetElementNode fsen=new FlatSetElementNode(dst_tmp, index_tmp, src_tmp);
670 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
674 return new NodePair(first, last);
675 } else if (an.getDest().kind()==Kind.NameNode) {
676 //We could be assigning a field or variable
677 NameNode nn=(NameNode)an.getDest();
680 if (nn.getExpression()!=null) {
682 FieldAccessNode fan=(FieldAccessNode)nn.getExpression();
683 ExpressionNode en=fan.getExpression();
684 TempDescriptor dst_tmp=null;
685 NodePair np_baseexp=null;
686 if(en.getType().isStatic()) {
687 // static field dereference with class name
688 dst_tmp = new TempDescriptor(en.getType().getClassDesc().getSymbol(), en.getType());
689 FlatNop nop=new FlatNop();
690 np_baseexp = new NodePair(nop,nop);
692 dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
693 np_baseexp=flattenExpressionNode(en, dst_tmp);
696 first=np_baseexp.getBegin();
698 last.addNext(np_baseexp.getBegin());
699 last=np_baseexp.getEnd();
701 //See if we need to perform an operation
703 //If it is a preinc we need to store the initial value
704 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
705 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
707 FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
712 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
713 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
714 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
715 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
720 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
728 FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
732 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
736 return new NodePair(first, last);
738 if (nn.getField()!=null) {
742 //See if we need to perform an operation
744 //If it is a preinc we need to store the initial value
745 TempDescriptor src_tmp2=pre ? TempDescriptor.tempFactory("src",an.getDest().getType()) : out_temp;
746 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
748 FlatFieldNode ffn=new FlatFieldNode(nn.getField(), getTempforVar(nn.getVar()), src_tmp2);
757 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
758 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
759 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
760 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
765 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
772 FlatSetFieldNode fsfn=null;
773 if(nn.getClassDesc()!=null) {
774 // this is a static field access inside of a static block
775 fsfn=new FlatSetFieldNode(new TempDescriptor("sfsb", nn.getClassType()), nn.getField(), src_tmp);
777 fsfn=new FlatSetFieldNode(getTempforVar(nn.getVar()), nn.getField(), src_tmp);
786 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
790 return new NodePair(first, last);
793 //See if we need to perform an operation
796 //If it is a preinc we need to store the initial value
797 TempDescriptor src_tmp2=getTempforVar(nn.getVar());
798 TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3_",an.getDest().getType());
800 FlatOpNode fon=new FlatOpNode(out_temp, src_tmp2, null, new Operation(Operation.ASSIGN));
809 if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
810 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
811 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
812 FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
820 FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
830 FlatOpNode fon=new FlatOpNode(getTempforVar(nn.getVar()), src_tmp, null, new Operation(Operation.ASSIGN));
835 FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
839 return new NodePair(first, last);
847 private NodePair flattenNameNode(NameNode nn,TempDescriptor out_temp) {
848 if (nn.getExpression()!=null) {
849 /* Hack - use subtree instead */
850 return flattenExpressionNode(nn.getExpression(),out_temp);
851 } else if (nn.getField()!=null) {
852 TempDescriptor tmp=getTempforVar(nn.getVar());
853 FlatFieldNode ffn=new FlatFieldNode(nn.getField(), tmp, out_temp);
854 return new NodePair(ffn,ffn);
856 TempDescriptor tmp=getTempforVar(nn.isTag() ? nn.getTagVar() : nn.getVar());
859 out_temp.setTag(tmp.getTag());
861 FlatOpNode fon=new FlatOpNode(out_temp, tmp, null, new Operation(Operation.ASSIGN));
862 return new NodePair(fon,fon);
866 private NodePair flattenOpNode(OpNode on,TempDescriptor out_temp) {
867 TempDescriptor temp_left=TempDescriptor.tempFactory("leftop",on.getLeft().getType());
868 TempDescriptor temp_right=null;
870 Operation op=on.getOp();
872 NodePair left=flattenExpressionNode(on.getLeft(),temp_left);
874 if (on.getRight()!=null) {
875 temp_right=TempDescriptor.tempFactory("rightop",on.getRight().getType());
876 right=flattenExpressionNode(on.getRight(),temp_right);
878 FlatNop nop=new FlatNop();
879 right=new NodePair(nop,nop);
882 if (op.getOp()==Operation.LOGIC_OR) {
883 /* Need to do shortcircuiting */
884 FlatCondBranch fcb=new FlatCondBranch(temp_left);
885 FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
886 FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
887 FlatNop fnop=new FlatNop();
888 left.getEnd().addNext(fcb);
889 fcb.addFalseNext(right.getBegin());
890 right.getEnd().addNext(fon2);
892 fcb.addTrueNext(fon1);
894 return new NodePair(left.getBegin(), fnop);
895 } else if (op.getOp()==Operation.LOGIC_AND) {
896 /* Need to do shortcircuiting */
897 FlatCondBranch fcb=new FlatCondBranch(temp_left);
898 FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
899 FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
900 FlatNop fnop=new FlatNop();
901 left.getEnd().addNext(fcb);
902 fcb.addTrueNext(right.getBegin());
903 right.getEnd().addNext(fon2);
905 fcb.addFalseNext(fon1);
907 return new NodePair(left.getBegin(), fnop);
908 } else if (op.getOp()==Operation.ADD&&on.getLeft().getType().isString()) {
909 //We have a string concatenate
910 ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
911 MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
912 FlatCall fc=new FlatCall(concatmd, out_temp, temp_left, new TempDescriptor[] {temp_right});
913 left.getEnd().addNext(right.getBegin());
914 right.getEnd().addNext(fc);
915 return new NodePair(left.getBegin(), fc);
918 FlatOpNode fon=new FlatOpNode(out_temp,temp_left,temp_right,op);
919 left.getEnd().addNext(right.getBegin());
920 right.getEnd().addNext(fon);
921 return new NodePair(left.getBegin(),fon);
924 private NodePair flattenExpressionNode(ExpressionNode en, TempDescriptor out_temp) {
926 case Kind.AssignmentNode:
927 return flattenAssignmentNode((AssignmentNode)en,out_temp);
930 return flattenCastNode((CastNode)en,out_temp);
932 case Kind.CreateObjectNode:
933 return flattenCreateObjectNode((CreateObjectNode)en,out_temp);
935 case Kind.FieldAccessNode:
936 return flattenFieldAccessNode((FieldAccessNode)en,out_temp);
938 case Kind.ArrayAccessNode:
939 return flattenArrayAccessNode((ArrayAccessNode)en,out_temp);
941 case Kind.LiteralNode:
942 return flattenLiteralNode((LiteralNode)en,out_temp);
944 case Kind.MethodInvokeNode:
945 return flattenMethodInvokeNode((MethodInvokeNode)en,out_temp);
948 return flattenNameNode((NameNode)en,out_temp);
951 return flattenOpNode((OpNode)en,out_temp);
953 case Kind.OffsetNode:
954 return flattenOffsetNode((OffsetNode)en,out_temp);
956 case Kind.TertiaryNode:
957 return flattenTertiaryNode((TertiaryNode)en,out_temp);
959 case Kind.InstanceOfNode:
960 return flattenInstanceOfNode((InstanceOfNode)en,out_temp);
962 case Kind.ArrayInitializerNode:
963 return flattenArrayInitializerNode((ArrayInitializerNode)en,out_temp);
968 private NodePair flattenDeclarationNode(DeclarationNode dn) {
969 VarDescriptor vd=dn.getVarDescriptor();
970 TempDescriptor td=getTempforVar(vd);
971 if (dn.getExpression()!=null)
972 return flattenExpressionNode(dn.getExpression(),td);
974 FlatNop fn=new FlatNop();
975 return new NodePair(fn,fn);
979 private NodePair flattenTagDeclarationNode(TagDeclarationNode dn) {
980 TagVarDescriptor tvd=dn.getTagVarDescriptor();
981 TagDescriptor tag=tvd.getTag();
982 TempDescriptor tmp=getTempforVar(tvd);
983 FlatTagDeclaration ftd=new FlatTagDeclaration(tag, tmp);
984 return new NodePair(ftd,ftd);
987 private TempDescriptor getTempforParam(Descriptor d) {
988 if (temptovar.containsKey(d))
989 return (TempDescriptor)temptovar.get(d);
991 if (d instanceof VarDescriptor) {
992 VarDescriptor vd=(VarDescriptor)d;
993 TempDescriptor td=TempDescriptor.paramtempFactory(vd.getName(),vd.getType());
994 temptovar.put(vd,td);
996 } else if (d instanceof TagVarDescriptor) {
997 TagVarDescriptor tvd=(TagVarDescriptor)d;
998 TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
999 TempDescriptor td=TempDescriptor.paramtempFactory(tvd.getName(), tagtype, tvd.getTag());
1000 temptovar.put(tvd,td);
1002 } else throw new Error("Unreconized Descriptor");
1006 private TempDescriptor getTempforVar(Descriptor d) {
1007 if (temptovar.containsKey(d))
1008 return (TempDescriptor)temptovar.get(d);
1010 if (d instanceof VarDescriptor) {
1011 VarDescriptor vd=(VarDescriptor)d;
1012 TempDescriptor td=TempDescriptor.tempFactory(vd.getName(), vd.getType());
1013 temptovar.put(vd,td);
1015 } else if (d instanceof TagVarDescriptor) {
1016 TagVarDescriptor tvd=(TagVarDescriptor)d;
1017 //BUGFIX TAGTYPE - add next line, modify following
1018 //line to tag this new type descriptor, modify
1019 //TempDescriptor constructor & factory to set type
1020 //using this Type To test, use any program with tags
1021 TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
1022 TempDescriptor td=TempDescriptor.tempFactory(tvd.getName(),tagtype, tvd.getTag());
1023 temptovar.put(tvd,td);
1025 } else throw new Error("Unrecognized Descriptor");
1029 private NodePair flattenIfStatementNode(IfStatementNode isn) {
1030 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.BOOLEAN));
1031 NodePair cond=flattenExpressionNode(isn.getCondition(),cond_temp);
1032 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1033 NodePair true_np=flattenBlockNode(isn.getTrueBlock());
1035 FlatNop nopend=new FlatNop();
1037 if (isn.getFalseBlock()!=null)
1038 false_np=flattenBlockNode(isn.getFalseBlock());
1040 FlatNop nop=new FlatNop();
1041 false_np=new NodePair(nop,nop);
1044 cond.getEnd().addNext(fcb);
1045 fcb.addTrueNext(true_np.getBegin());
1046 fcb.addFalseNext(false_np.getBegin());
1047 if (true_np.getEnd()!=null)
1048 true_np.getEnd().addNext(nopend);
1049 if (false_np.getEnd()!=null)
1050 false_np.getEnd().addNext(nopend);
1051 if (nopend.numPrev()==0)
1052 return new NodePair(cond.getBegin(), null);
1054 return new NodePair(cond.getBegin(), nopend);
1057 private NodePair flattenSwitchStatementNode(SwitchStatementNode ssn) {
1058 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.INT));
1059 NodePair cond=flattenExpressionNode(ssn.getCondition(),cond_temp);
1060 FlatNop nopend=new FlatNop();
1061 NodePair sbody = flattenSwitchBodyNode(ssn.getSwitchBody(), cond_temp, nopend);
1063 cond.getEnd().addNext(sbody.getBegin());
1065 return new NodePair(cond.getBegin(), sbody.getEnd());
1068 private NodePair flattenSwitchBodyNode(BlockNode bn, TempDescriptor cond_temp, FlatNode endnode) {
1069 FlatNode begin=null;
1070 FlatNode end=endnode;
1071 NodePair prev_true_branch = null;
1072 NodePair prev_false_branch = null;
1073 for(int i=0; i<bn.size(); i++) {
1074 SwitchBlockNode sbn = (SwitchBlockNode)bn.get(i);
1075 HashSet oldbs=breakset;
1076 breakset=new HashSet();
1078 NodePair body=flattenBlockNode(sbn.getSwitchBlockStatement());
1079 Vector<SwitchLabelNode> slnv = sbn.getSwitchConditions();
1080 FlatNode cond_begin = null;
1081 NodePair prev_fnp = null;
1082 for(int j = 0; j < slnv.size(); j++) {
1083 SwitchLabelNode sln = slnv.elementAt(j);
1084 NodePair left = null;
1085 NodePair false_np = null;
1086 if(sln.isDefault()) {
1089 TempDescriptor cond_tmp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1090 TempDescriptor temp_left=TempDescriptor.tempFactory("leftop", sln.getCondition().getType());
1091 Operation op=new Operation(Operation.EQUAL);
1092 left=flattenExpressionNode(sln.getCondition(), temp_left);
1093 FlatOpNode fon=new FlatOpNode(cond_tmp, temp_left, cond_temp, op);
1094 left.getEnd().addNext(fon);
1096 FlatCondBranch fcb=new FlatCondBranch(cond_tmp);
1097 fcb.setTrueProb(State.TRUEPROB);
1099 FlatNop nop=new FlatNop();
1100 false_np=new NodePair(nop,nop);
1103 fcb.addTrueNext(body.getBegin());
1104 fcb.addFalseNext(false_np.getBegin());
1106 if((prev_fnp != null) && (prev_fnp.getEnd() != null)) {
1107 prev_fnp.getEnd().addNext(left.getBegin());
1109 prev_fnp = false_np;
1112 begin = left.getBegin();
1114 if(cond_begin == null) {
1115 cond_begin = left.getBegin();
1118 if((prev_false_branch != null) && (prev_false_branch.getEnd() != null)) {
1119 prev_false_branch.getEnd().addNext(cond_begin);
1121 prev_false_branch = prev_fnp;
1122 if((prev_true_branch != null) && (prev_true_branch.getEnd() != null)) {
1123 prev_true_branch.getEnd().addNext(body.getBegin());
1125 prev_true_branch = body;
1126 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1127 FlatNode fn=(FlatNode)breakit.next();
1129 fn.addNext(endnode);
1133 if((prev_true_branch != null) && (prev_true_branch.getEnd() != null)) {
1134 prev_true_branch.getEnd().addNext(endnode);
1136 if((prev_false_branch != null) && (prev_false_branch.getEnd() != null)) {
1137 prev_false_branch.getEnd().addNext(endnode);
1140 end=begin=new FlatNop();
1142 return new NodePair(begin,end);
1145 private NodePair flattenLoopNode(LoopNode ln) {
1146 HashSet oldbs=breakset;
1147 HashSet oldcs=continueset;
1148 breakset=new HashSet();
1149 continueset=new HashSet();
1151 if (ln.getType()==LoopNode.FORLOOP) {
1152 NodePair initializer=flattenBlockNode(ln.getInitializer());
1153 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1154 NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
1155 NodePair update=flattenBlockNode(ln.getUpdate());
1156 NodePair body=flattenBlockNode(ln.getBody());
1157 FlatNode begin=initializer.getBegin();
1158 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1159 fcb.setTrueProb(State.TRUEPROB);
1161 FlatNop nopend=new FlatNop();
1162 FlatBackEdge backedge=new FlatBackEdge();
1164 FlatNop nop2=new FlatNop();
1165 initializer.getEnd().addNext(nop2);
1166 nop2.addNext(condition.getBegin());
1167 if (body.getEnd()!=null)
1168 body.getEnd().addNext(update.getBegin());
1169 update.getEnd().addNext(backedge);
1170 backedge.addNext(condition.getBegin());
1171 condition.getEnd().addNext(fcb);
1172 fcb.addFalseNext(nopend);
1173 fcb.addTrueNext(body.getBegin());
1174 for(Iterator contit=continueset.iterator();contit.hasNext();) {
1175 FlatNode fn=(FlatNode)contit.next();
1177 fn.addNext(update.getBegin());
1179 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1180 FlatNode fn=(FlatNode)breakit.next();
1186 return new NodePair(begin,nopend);
1187 } else if (ln.getType()==LoopNode.WHILELOOP) {
1188 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1189 NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
1190 NodePair body=flattenBlockNode(ln.getBody());
1191 FlatNode begin=condition.getBegin();
1192 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1193 fcb.setTrueProb(State.TRUEPROB);
1195 FlatNop nopend=new FlatNop();
1196 FlatBackEdge backedge=new FlatBackEdge();
1198 if (body.getEnd()!=null)
1199 body.getEnd().addNext(backedge);
1200 backedge.addNext(condition.getBegin());
1202 condition.getEnd().addNext(fcb);
1203 fcb.addFalseNext(nopend);
1204 fcb.addTrueNext(body.getBegin());
1206 for(Iterator contit=continueset.iterator();contit.hasNext();) {
1207 FlatNode fn=(FlatNode)contit.next();
1209 fn.addNext(backedge);
1211 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1212 FlatNode fn=(FlatNode)breakit.next();
1218 return new NodePair(begin,nopend);
1219 } else if (ln.getType()==LoopNode.DOWHILELOOP) {
1220 TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
1221 NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
1222 NodePair body=flattenBlockNode(ln.getBody());
1223 FlatNode begin=body.getBegin();
1224 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1225 fcb.setTrueProb(State.TRUEPROB);
1227 FlatNop nopend=new FlatNop();
1228 FlatBackEdge backedge=new FlatBackEdge();
1230 if (body.getEnd()!=null)
1231 body.getEnd().addNext(condition.getBegin());
1232 condition.getEnd().addNext(fcb);
1233 fcb.addFalseNext(nopend);
1234 fcb.addTrueNext(backedge);
1235 backedge.addNext(body.getBegin());
1237 for(Iterator contit=continueset.iterator();contit.hasNext();) {
1238 FlatNode fn=(FlatNode)contit.next();
1240 fn.addNext(condition.getBegin());
1242 for(Iterator breakit=breakset.iterator();breakit.hasNext();) {
1243 FlatNode fn=(FlatNode)breakit.next();
1249 return new NodePair(begin,nopend);
1250 } else throw new Error();
1253 private NodePair flattenReturnNode(ReturnNode rntree) {
1254 TempDescriptor retval=null;
1256 if (rntree.getReturnExpression()!=null) {
1257 retval=TempDescriptor.tempFactory("ret_value", rntree.getReturnExpression().getType());
1258 cond=flattenExpressionNode(rntree.getReturnExpression(),retval);
1261 FlatReturnNode rnflat=new FlatReturnNode(retval);
1264 if ((state.THREAD||state.MGC)&&currmd.getModifiers().isSynchronized()) {
1265 MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
1266 TempDescriptor thistd=getTempforVar(currmd.getThis());
1267 FlatCall fc=new FlatCall(memd, null, thistd, new TempDescriptor[0]);
1271 if (state.DSM&&currmd.getModifiers().isAtomic()) {
1272 FlatAtomicExitNode faen=new FlatAtomicExitNode(curran);
1278 cond.getEnd().addNext(ln);
1279 return new NodePair(cond.getBegin(),null);
1281 return new NodePair(ln,null);
1284 private NodePair flattenTaskExitNode(TaskExitNode ten) {
1285 FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.TASKEXIT);
1286 ffan.setTaskExitIndex(ten.getTaskExitIndex());
1287 updateFlagActionNode(ffan, ten.getFlagEffects());
1288 NodePair fcn=flattenConstraintCheck(ten.getChecks());
1289 ffan.addNext(fcn.getBegin());
1290 FlatReturnNode rnflat=new FlatReturnNode(null);
1292 fcn.getEnd().addNext(rnflat);
1293 return new NodePair(ffan, null);
1296 private NodePair flattenConstraintCheck(Vector ccs) {
1297 FlatNode begin=new FlatNop();
1299 return new NodePair(begin,begin);
1300 FlatNode last=begin;
1301 for(int i=0; i<ccs.size(); i++) {
1302 ConstraintCheck cc=(ConstraintCheck) ccs.get(i);
1303 /* Flatten the arguments */
1304 TempDescriptor[] temps=new TempDescriptor[cc.numArgs()];
1305 String[] vars=new String[cc.numArgs()];
1306 for(int j=0; j<cc.numArgs(); j++) {
1307 ExpressionNode en=cc.getArg(j);
1308 TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
1310 vars[j]=cc.getVar(j);
1311 NodePair np=flattenExpressionNode(en, td);
1312 last.addNext(np.getBegin());
1316 FlatCheckNode fcn=new FlatCheckNode(cc.getSpec(), vars, temps);
1320 return new NodePair(begin,last);
1323 private NodePair flattenSubBlockNode(SubBlockNode sbn) {
1324 return flattenBlockNode(sbn.getBlockNode());
1327 private NodePair flattenSynchronizedNode(SynchronizedNode sbn) {
1328 TempDescriptor montmp=TempDescriptor.tempFactory("monitor",sbn.getExpr().getType());
1329 NodePair npexp=flattenExpressionNode(sbn.getExpr(), montmp);
1330 NodePair npblock=flattenBlockNode(sbn.getBlockNode());
1332 MethodDescriptor menmd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorEnter");
1333 FlatCall fcen=new FlatCall(menmd, null, montmp, new TempDescriptor[0]);
1335 MethodDescriptor mexmd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
1336 FlatCall fcex=new FlatCall(mexmd, null, montmp, new TempDescriptor[0]);
1338 npexp.getEnd().addNext(fcen);
1339 fcen.addNext(npblock.getBegin());
1340 npblock.getEnd().addNext(fcex);
1341 return new NodePair(npexp.getBegin(), fcex);
1344 private NodePair flattenAtomicNode(AtomicNode sbn) {
1345 NodePair np=flattenBlockNode(sbn.getBlockNode());
1346 FlatAtomicEnterNode faen=new FlatAtomicEnterNode();
1347 FlatAtomicExitNode faexn=new FlatAtomicExitNode(faen);
1348 faen.addNext(np.getBegin());
1349 np.getEnd().addNext(faexn);
1350 return new NodePair(faen, faexn);
1353 private NodePair flattenGenReachNode( GenReachNode grn ) {
1354 FlatGenReachNode fgrn = new FlatGenReachNode( grn.getGraphName() );
1355 return new NodePair( fgrn, fgrn );
1358 private NodePair flattenSESENode(SESENode sn) {
1359 if( sn.isStart() ) {
1360 FlatSESEEnterNode fsen=new FlatSESEEnterNode(sn);
1361 sn.setFlatEnter(fsen);
1362 return new NodePair(fsen, fsen);
1365 FlatSESEExitNode fsexn=new FlatSESEExitNode(sn);
1366 sn.setFlatExit(fsexn);
1367 FlatSESEEnterNode fsen=sn.getStart().getFlatEnter();
1368 fsexn.setFlatEnter(fsen);
1369 sn.getStart().getFlatEnter().setFlatExit( fsexn );
1371 return new NodePair(fsexn, fsexn);
1374 private NodePair flattenContinueBreakNode(ContinueBreakNode cbn) {
1375 FlatNop fn=new FlatNop();
1379 continueset.add(fn);
1380 return new NodePair(fn,null);
1383 private NodePair flattenInstanceOfNode(InstanceOfNode tn, TempDescriptor out_temp) {
1384 TempDescriptor expr_temp=TempDescriptor.tempFactory("expr",tn.getExpr().getType());
1385 NodePair cond=flattenExpressionNode(tn.getExpr(), expr_temp);
1386 FlatInstanceOfNode fion=new FlatInstanceOfNode(tn.getExprType(), expr_temp, out_temp);
1387 cond.getEnd().addNext(fion);
1388 return new NodePair(cond.getBegin(),fion);
1391 private NodePair flattenArrayInitializerNode(ArrayInitializerNode ain, TempDescriptor out_temp) {
1392 boolean isGlobal = false;
1393 String disjointId = null;
1394 // get the type the array to be initialized
1395 TypeDescriptor td = ain.getType();
1397 // create a new array of size equal to the array initializer
1398 FlatNode first=null;
1400 TempDescriptor tmp=TempDescriptor.tempFactory("arg", new TypeDescriptor(TypeDescriptor.INT));
1401 FlatLiteralNode fln_tmp=new FlatLiteralNode(tmp.getType(), new Integer(ain.numVarInitializers()), tmp);
1402 first = last=fln_tmp;
1404 // create the new array
1405 FlatNew fn=new FlatNew(td, out_temp, tmp, isGlobal, disjointId);
1409 // initialize the new array
1410 for(int i = 0; i < ain.numVarInitializers(); i++) {
1411 ExpressionNode var_init_node = ain.getVarInitializer(i);
1412 TempDescriptor tmp_toinit = out_temp;
1413 TempDescriptor tmp_init=TempDescriptor.tempFactory("array_init", td.dereference());
1415 TempDescriptor index=TempDescriptor.tempFactory("index", new TypeDescriptor(TypeDescriptor.INT));
1416 FlatLiteralNode fln=new FlatLiteralNode(index.getType(), new Integer(i), index);
1417 // calculate the initial value
1418 NodePair np_init = flattenExpressionNode(var_init_node, tmp_init);
1419 // TODO wrapper class process is missing now
1420 /*if(td.isArray() && td.dereference().iswrapper()) {
1422 FlatSetElementNode fsen=new FlatSetElementNode(tmp_toinit, index, tmp_init);
1424 fln.addNext(np_init.getBegin());
1425 np_init.getEnd().addNext(fsen);
1429 return new NodePair(first, last);
1432 private NodePair flattenTertiaryNode(TertiaryNode tn, TempDescriptor out_temp) {
1433 TempDescriptor cond_temp=TempDescriptor.tempFactory("tert_cond",new TypeDescriptor(TypeDescriptor.BOOLEAN));
1434 TempDescriptor true_temp=TempDescriptor.tempFactory("tert_true",tn.getTrueExpr().getType());
1435 TempDescriptor fals_temp=TempDescriptor.tempFactory("tert_fals",tn.getFalseExpr().getType());
1437 NodePair cond=flattenExpressionNode(tn.getCond(),cond_temp);
1438 FlatCondBranch fcb=new FlatCondBranch(cond_temp);
1440 NodePair trueExpr=flattenExpressionNode(tn.getTrueExpr(),true_temp);
1441 FlatOpNode fonT=new FlatOpNode(out_temp, true_temp, null, new Operation(Operation.ASSIGN));
1443 NodePair falseExpr=flattenExpressionNode(tn.getFalseExpr(),fals_temp);
1444 FlatOpNode fonF=new FlatOpNode(out_temp, fals_temp, null, new Operation(Operation.ASSIGN));
1446 FlatNop nopend=new FlatNop();
1448 cond.getEnd().addNext(fcb);
1450 fcb.addTrueNext(trueExpr.getBegin());
1451 fcb.addFalseNext(falseExpr.getBegin());
1453 trueExpr.getEnd().addNext(fonT);
1454 fonT.addNext(nopend);
1456 falseExpr.getEnd().addNext(fonF);
1457 fonF.addNext(nopend);
1459 return new NodePair(cond.getBegin(), nopend);
1462 private NodePair flattenBlockStatementNode(BlockStatementNode bsn) {
1463 switch(bsn.kind()) {
1464 case Kind.BlockExpressionNode:
1465 return flattenBlockExpressionNode((BlockExpressionNode)bsn);
1467 case Kind.DeclarationNode:
1468 return flattenDeclarationNode((DeclarationNode)bsn);
1470 case Kind.TagDeclarationNode:
1471 return flattenTagDeclarationNode((TagDeclarationNode)bsn);
1473 case Kind.IfStatementNode:
1474 return flattenIfStatementNode((IfStatementNode)bsn);
1476 case Kind.SwitchStatementNode:
1477 return flattenSwitchStatementNode((SwitchStatementNode)bsn);
1480 return flattenLoopNode((LoopNode)bsn);
1482 case Kind.ReturnNode:
1483 return flattenReturnNode((IR.Tree.ReturnNode)bsn);
1485 case Kind.TaskExitNode:
1486 return flattenTaskExitNode((IR.Tree.TaskExitNode)bsn);
1488 case Kind.SubBlockNode:
1489 return flattenSubBlockNode((SubBlockNode)bsn);
1491 case Kind.AtomicNode:
1492 return flattenAtomicNode((AtomicNode)bsn);
1494 case Kind.SynchronizedNode:
1495 return flattenSynchronizedNode((SynchronizedNode)bsn);
1498 return flattenSESENode((SESENode)bsn);
1500 case Kind.GenReachNode:
1501 return flattenGenReachNode((GenReachNode)bsn);
1503 case Kind.ContinueBreakNode:
1504 return flattenContinueBreakNode((ContinueBreakNode)bsn);