public class BuildFlat {
State state;
- public BuildFlat(State st) {
+ Hashtable temptovar;
+ MethodDescriptor currmd;
+ TypeUtil typeutil;
+
+ public BuildFlat(State st, TypeUtil typeutil) {
state=st;
+ temptovar=new Hashtable();
+ this.typeutil=typeutil;
+ }
+
+ public Hashtable getMap() {
+ return temptovar;
}
- public void buildflat() {
- Iterator it=state.classset.iterator();
+ public void buildFlat() {
+ Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
while(it.hasNext()) {
ClassDescriptor cn=(ClassDescriptor)it.next();
flattenClass(cn);
}
+
+ Iterator task_it=state.getTaskSymbolTable().getDescriptorsIterator();
+ while(task_it.hasNext()) {
+ TaskDescriptor td=(TaskDescriptor)task_it.next();
+ flattenTask(td);
+ }
}
+ private void flattenTask(TaskDescriptor td) {
+ BlockNode bn=state.getMethodBody(td);
+ NodePair np=flattenBlockNode(bn);
+ FlatNode fn=np.getBegin();
+ if (np.getEnd().kind()!=FKind.FlatReturnNode) {
+ FlatReturnNode rnflat=new FlatReturnNode(null);
+ np.getEnd().addNext(rnflat);
+ }
+
+ FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.PRE);
+ ffan.addNext(fn);
+
+ FlatMethod fm=new FlatMethod(td);
+ fm.addNext(ffan);
+
+ Hashtable visitedset=new Hashtable();
+
+ for(int i=0;i<td.numParameters();i++) {
+ VarDescriptor paramvd=td.getParameter(i);
+ fm.addParameterTemp(getTempforVar(paramvd));
+ TagExpressionList tel=td.getTag(paramvd);
+ //BUG added next line to fix...to test feed in any task program
+ if (tel!=null)
+ for(int j=0;j<tel.numTags();j++) {
+ TagVarDescriptor tvd=(TagVarDescriptor) td.getParameterTable().getFromSameScope(tel.getName(j));
+ TempDescriptor tagtmp=getTempforVar(tvd);
+ if (!visitedset.containsKey(tvd.getName())) {
+ visitedset.put(tvd.getName(),tvd.getTag());
+ fm.addTagTemp(tagtmp);
+ } else {
+ TagDescriptor tmptd=(TagDescriptor) visitedset.get(tvd.getName());
+ if (!tmptd.equals(tvd.getTag()))
+ throw new Error("Two different tag types with same name as parameters to:"+td);
+ }
+ tel.setTemp(j, tagtmp);
+ }
+ }
+
+ /* Flatten Vector of Flag Effects */
+ Vector flags=td.getFlagEffects();
+ updateFlagActionNode(ffan,flags);
+
+ state.addFlatCode(td,fm);
+ }
+
+
+ /* This method transforms a vector of FlagEffects into the FlatFlagActionNode */
+ private void updateFlagActionNode(FlatFlagActionNode ffan, Vector flags) {
+ if (flags==null) // Do nothing if the flag effects vector is empty
+ return;
+
+ for(int i=0;i<flags.size();i++) {
+ FlagEffects fes=(FlagEffects)flags.get(i);
+ TempDescriptor flagtemp=getTempforVar(fes.getVar());
+ // Process the flags
+ for(int j=0;j<fes.numEffects();j++) {
+ FlagEffect fe=fes.getEffect(j);
+ ffan.addFlagAction(flagtemp, fe.getFlag(), fe.getStatus());
+ }
+ // Process the tags
+ for(int j=0;j<fes.numTagEffects();j++) {
+ TagEffect te=fes.getTagEffect(j);
+ TempDescriptor tagtemp=getTempforVar(te.getTag());
+
+ ffan.addTagAction(flagtemp, te.getTag().getTag(), tagtemp, te.getStatus());
+ }
+ }
+ }
+
+ FlatAtomicEnterNode curran=null;
+
private void flattenClass(ClassDescriptor cn) {
Iterator methodit=cn.getMethods();
while(methodit.hasNext()) {
- MethodDescriptor md=(MethodDescriptor)methodit.next();
- BlockNode bn=state.getMethodBody(md);
- FlatNode fn=flattenBlockNode(bn).getBegin();
- FlatMethod fm=new FlatMethod(md, fn);
- state.addFlatCode(md,fm);
+ currmd=(MethodDescriptor)methodit.next();
+ BlockNode bn=state.getMethodBody(currmd);
+
+ if (state.DSM&&currmd.getModifiers().isAtomic()) {
+ curran=new FlatAtomicEnterNode();
+ } else
+ curran=null;
+ NodePair np=flattenBlockNode(bn);
+ FlatNode fn=np.getBegin();
+ if (state.THREAD&&currmd.getModifiers().isSynchronized()) {
+ MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorEnter");
+ TempDescriptor thistd=getTempforVar(currmd.getThis());
+ FlatCall fc=new FlatCall(memd, null, thistd, new TempDescriptor[0]);
+ fc.addNext(fn);
+ fn=fc;
+ if (np.getEnd().kind()!=FKind.FlatReturnNode) {
+ MethodDescriptor memdex=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
+ FlatCall fcunlock=new FlatCall(memdex, null, thistd, new TempDescriptor[0]);
+ np.getEnd().addNext(fcunlock);
+ FlatReturnNode rnflat=new FlatReturnNode(null);
+ fcunlock.addNext(rnflat);
+ }
+ } else if (state.DSM&&currmd.getModifiers().isAtomic()) {
+ curran.addNext(fn);
+ fn=curran;
+ if (np.getEnd().kind()!=FKind.FlatReturnNode) {
+ FlatAtomicExitNode aen=new FlatAtomicExitNode(curran);
+ np.getEnd().addNext(aen);
+ FlatReturnNode rnflat=new FlatReturnNode(null);
+ aen.addNext(rnflat);
+ }
+ } else if (np.getEnd().kind()!=FKind.FlatReturnNode) {
+ FlatReturnNode rnflat=new FlatReturnNode(null);
+ np.getEnd().addNext(rnflat);
+ }
+
+ FlatMethod fm=new FlatMethod(currmd);
+ fm.addNext(fn);
+ if (!currmd.isStatic())
+ fm.addParameterTemp(getTempforParam(currmd.getThis()));
+ for(int i=0;i<currmd.numParameters();i++) {
+ fm.addParameterTemp(getTempforParam(currmd.getParameter(i)));
+ }
+ state.addFlatCode(currmd,fm);
}
}
end=np_end;
}
}
- return new NodePair(begin,end);
+ if (begin==null) {
+ end=begin=new FlatNop();
+ }
+ return new NodePair(begin,end);
}
private NodePair flattenBlockExpressionNode(BlockExpressionNode en) {
+ TempDescriptor tmp=TempDescriptor.tempFactory("neverused",en.getExpression().getType());
+ return flattenExpressionNode(en.getExpression(),tmp);
+ }
+
+ private NodePair flattenCastNode(CastNode cn,TempDescriptor out_temp) {
+ TempDescriptor tmp=TempDescriptor.tempFactory("tocast",cn.getExpression().getType());
+ NodePair np=flattenExpressionNode(cn.getExpression(), tmp);
+ FlatCastNode fcn=new FlatCastNode(cn.getType(), tmp, out_temp);
+ np.getEnd().addNext(fcn);
+ return new NodePair(np.getBegin(),fcn);
+ }
+
+ private NodePair flattenLiteralNode(LiteralNode ln,TempDescriptor out_temp) {
+ FlatLiteralNode fln=new FlatLiteralNode(ln.getType(), ln.getValue(), out_temp);
+ return new NodePair(fln,fln);
+ }
+
+ private NodePair flattenCreateObjectNode(CreateObjectNode con,TempDescriptor out_temp) {
+ TypeDescriptor td=con.getType();
+ if (!td.isArray()) {
+ FlatNew fn=new FlatNew(td, out_temp, con.isGlobal());
+ TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
+ FlatNode last=fn;
+ // Build arguments
+ for(int i=0;i<con.numArgs();i++) {
+ ExpressionNode en=con.getArg(i);
+ TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
+ temps[i]=tmp;
+ NodePair np=flattenExpressionNode(en, tmp);
+ last.addNext(np.getBegin());
+ last=np.getEnd();
+ }
+ MethodDescriptor md=con.getConstructor();
+ //Call to constructor
+ FlatCall fc=new FlatCall(md, null, out_temp, temps);
+ last.addNext(fc);
+ last=fc;
+ if (td.getClassDesc().hasFlags()) {
+ // if (con.getFlagEffects()!=null) {
+ FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.NEWOBJECT);
+ FlagEffects fes=con.getFlagEffects();
+ TempDescriptor flagtemp=out_temp;
+ if (fes!=null) {
+ for(int j=0;j<fes.numEffects();j++) {
+ FlagEffect fe=fes.getEffect(j);
+ ffan.addFlagAction(flagtemp, fe.getFlag(), fe.getStatus());
+ }
+ for(int j=0;j<fes.numTagEffects();j++) {
+ TagEffect te=fes.getTagEffect(j);
+ TempDescriptor tagtemp=getTempforVar(te.getTag());
+
+ ffan.addTagAction(flagtemp, te.getTag().getTag(), tagtemp, te.getStatus());
+ }
+ } else {
+ ffan.addFlagAction(flagtemp, null, false);
+ }
+ last.addNext(ffan);
+ last=ffan;
+ }
+ return new NodePair(fn,last);
+ } else {
+ FlatNode first=null;
+ FlatNode last=null;
+ TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
+ for (int i=0;i<con.numArgs();i++) {
+ ExpressionNode en=con.getArg(i);
+ TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
+ temps[i]=tmp;
+ NodePair np=flattenExpressionNode(en, tmp);
+ if (first==null)
+ first=np.getBegin();
+ else
+ last.addNext(np.getBegin());
+ last=np.getEnd();
+
+ TempDescriptor tmp2=(i==0)?
+ out_temp:
+ TempDescriptor.tempFactory("arg",en.getType());
+ }
+ FlatNew fn=new FlatNew(td, out_temp, temps[0], con.isGlobal());
+ last.addNext(fn);
+ if (temps.length>1) {
+ NodePair np=generateNewArrayLoop(temps, td.dereference(), out_temp, 0, con.isGlobal());
+ fn.addNext(np.getBegin());
+ return new NodePair(first,np.getEnd());
+ } else
+ return new NodePair(first, fn);
+ }
+ }
+
+ private NodePair generateNewArrayLoop(TempDescriptor[] temparray, TypeDescriptor td, TempDescriptor tmp, int i, boolean isglobal) {
+ TempDescriptor index=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
+ TempDescriptor tmpone=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
+ FlatNop fnop=new FlatNop();//last node
+
+ //index=0
+ FlatLiteralNode fln=new FlatLiteralNode(index.getType(),new Integer(0),index);
+ //tmpone=1
+ FlatLiteralNode fln2=new FlatLiteralNode(tmpone.getType(),new Integer(1),tmpone);
+
+ TempDescriptor tmpbool=TempDescriptor.tempFactory("comp",new TypeDescriptor(TypeDescriptor.BOOLEAN));
+
+ FlatOpNode fcomp=new FlatOpNode(tmpbool,index,temparray[i],new Operation(Operation.LT));
+ FlatCondBranch fcb=new FlatCondBranch(tmpbool);
+ fcb.setTrueProb(State.TRUEPROB);
+ fcb.setLoop();
+ //is index<temp[i]
+ TempDescriptor new_tmp=TempDescriptor.tempFactory("tmp",td);
+ FlatNew fn=new FlatNew(td, new_tmp, temparray[i+1], isglobal);
+ FlatSetElementNode fsen=new FlatSetElementNode(tmp,index,new_tmp);
+ // index=index+1
+ FlatOpNode fon=new FlatOpNode(index,index,tmpone,new Operation(Operation.ADD));
+ //jump out
+ fln.addNext(fln2);
+ fln2.addNext(fcomp);
+ fcomp.addNext(fcb);
+ fcb.addTrueNext(fn);
+ fcb.addFalseNext(fnop);
+ fn.addNext(fsen);
+ //Recursive call here
+ if ((i+2)<temparray.length) {
+ NodePair np2=generateNewArrayLoop(temparray, td.dereference(), new_tmp, i+1, isglobal);
+ fsen.addNext(np2.getBegin());
+ np2.getEnd().addNext(fon);
+ } else {
+ fsen.addNext(fon);
+ }
+ fon.addNext(fcomp);
+ return new NodePair(fln, fnop);
+ }
+
+ private NodePair flattenMethodInvokeNode(MethodInvokeNode min,TempDescriptor out_temp) {
+ TempDescriptor[] temps=new TempDescriptor[min.numArgs()];
+ FlatNode first=null;
+ FlatNode last=null;
+ TempDescriptor thisarg=null;
+
+ if (min.getExpression()!=null) {
+ thisarg=TempDescriptor.tempFactory("thisarg",min.getExpression().getType());
+ NodePair np=flattenExpressionNode(min.getExpression(),thisarg);
+ first=np.getBegin();
+ last=np.getEnd();
+ }
+
+ //Build arguments
+ for(int i=0;i<min.numArgs();i++) {
+ ExpressionNode en=min.getArg(i);
+ TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
+ temps[i]=td;
+ NodePair np=flattenExpressionNode(en, td);
+ if (first==null)
+ first=np.getBegin();
+ else
+ last.addNext(np.getBegin());
+ last=np.getEnd();
+ }
+
+ MethodDescriptor md=min.getMethod();
+
+ //Call to constructor
+
+ FlatCall fc;
+ if(md.getReturnType()==null||md.getReturnType().isVoid())
+ fc=new FlatCall(md, null, thisarg, temps);
+ else
+ fc=new FlatCall(md, out_temp, thisarg, temps);
+ if (first==null) {
+ first=fc;
+ } else
+ last.addNext(fc);
+ return new NodePair(first,fc);
+ }
+
+ private NodePair flattenFieldAccessNode(FieldAccessNode fan,TempDescriptor out_temp) {
+ TempDescriptor tmp=TempDescriptor.tempFactory("temp",fan.getExpression().getType());
+ NodePair npe=flattenExpressionNode(fan.getExpression(),tmp);
+ FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
+ npe.getEnd().addNext(fn);
+ return new NodePair(npe.getBegin(),fn);
+ }
+
+ private NodePair flattenArrayAccessNode(ArrayAccessNode aan,TempDescriptor out_temp) {
+ TempDescriptor tmp=TempDescriptor.tempFactory("temp",aan.getExpression().getType());
+ TempDescriptor tmpindex=TempDescriptor.tempFactory("temp",aan.getIndex().getType());
+ NodePair npe=flattenExpressionNode(aan.getExpression(),tmp);
+ NodePair npi=flattenExpressionNode(aan.getIndex(),tmpindex);
+ FlatElementNode fn=new FlatElementNode(tmp,tmpindex,out_temp);
+ npe.getEnd().addNext(npi.getBegin());
+ npi.getEnd().addNext(fn);
+ return new NodePair(npe.getBegin(),fn);
+ }
+
+ private NodePair flattenAssignmentNode(AssignmentNode an,TempDescriptor out_temp) {
+ // Three cases:
+ // left side is variable
+ // left side is field
+ // left side is array
+
+ Operation base=an.getOperation().getBaseOp();
+ boolean pre=base==null||(base.getOp()!=Operation.POSTINC&&base.getOp()!=Operation.POSTDEC);
+
+ if (!pre) {
+ //rewrite the base operation
+ base=base.getOp()==Operation.POSTINC?new Operation(Operation.ADD):new Operation(Operation.SUB);
+ }
+ FlatNode first=null;
+ FlatNode last=null;
+ TempDescriptor src_tmp=an.getSrc()==null?TempDescriptor.tempFactory("srctmp",an.getDest().getType()):TempDescriptor.tempFactory("srctmp",an.getSrc().getType());
+
+ //Get src value
+ if (an.getSrc()!=null) {
+ NodePair np_src=flattenExpressionNode(an.getSrc(),src_tmp);
+ first=np_src.getBegin();
+ last=np_src.getEnd();
+ } else if (!pre) {
+ FlatLiteralNode fln=new FlatLiteralNode(new TypeDescriptor(TypeDescriptor.INT) ,new Integer(1),src_tmp);
+ first=fln;
+ last=fln;
+ }
+
+ if (an.getDest().kind()==Kind.FieldAccessNode) {
+ //We are assigning an object field
+
+ FieldAccessNode fan=(FieldAccessNode)an.getDest();
+ ExpressionNode en=fan.getExpression();
+ TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
+ NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
+ if (first==null)
+ first=np_baseexp.getBegin();
+ else
+ last.addNext(np_baseexp.getBegin());
+ last=np_baseexp.getEnd();
+
+ //See if we need to perform an operation
+ if (base!=null) {
+ //If it is a preinc we need to store the initial value
+ TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
+ TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
+ FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
+ last.addNext(ffn);
+ last=ffn;
+
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
+ src_tmp=tmp;
+ last.addNext(fc);
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+ FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
+ last.addNext(fsfn);
+ last=fsfn;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fsfn.addNext(fon2);
+ last=fon2;
+ }
+ return new NodePair(first, last);
+ } else if (an.getDest().kind()==Kind.ArrayAccessNode) {
+ //We are assigning an array element
+
+
+ ArrayAccessNode aan=(ArrayAccessNode)an.getDest();
+ ExpressionNode en=aan.getExpression();
+ ExpressionNode enindex=aan.getIndex();
+ TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
+ TempDescriptor index_tmp=TempDescriptor.tempFactory("index",enindex.getType());
+ NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
+ NodePair np_indexexp=flattenExpressionNode(enindex, index_tmp);
+ if (first==null)
+ first=np_baseexp.getBegin();
+ else
+ last.addNext(np_baseexp.getBegin());
+ np_baseexp.getEnd().addNext(np_indexexp.getBegin());
+ last=np_indexexp.getEnd();
+
+ //See if we need to perform an operation
+ if (base!=null) {
+ //If it is a preinc we need to store the initial value
+ TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
+ TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
+
+ FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp2);
+ last.addNext(fen);
+ last=fen;
+
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
+ src_tmp=tmp;
+ last.addNext(fc);
+ last=fc;
+ } else {
+
+
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+
+ FlatSetElementNode fsen=new FlatSetElementNode(dst_tmp, index_tmp, src_tmp);
+ last.addNext(fsen);
+ last=fsen;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fsen.addNext(fon2);
+ last=fon2;
+ }
+ return new NodePair(first, last);
+ } else if (an.getDest().kind()==Kind.NameNode) {
+ //We could be assigning a field or variable
+ NameNode nn=(NameNode)an.getDest();
+ if (nn.getExpression()!=null) {
+ //It is a field
+ FieldAccessNode fan=(FieldAccessNode)nn.getExpression();
+ ExpressionNode en=fan.getExpression();
+ TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
+ NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
+ if (first==null)
+ first=np_baseexp.getBegin();
+ else
+ last.addNext(np_baseexp.getBegin());
+ last=np_baseexp.getEnd();
+
+ //See if we need to perform an operation
+ if (base!=null) {
+ //If it is a preinc we need to store the initial value
+ TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
+ TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
+
+ FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
+ last.addNext(ffn);
+ last=ffn;
+
+
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
+ src_tmp=tmp;
+ last.addNext(fc);
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+
+ FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
+ last.addNext(fsfn);
+ last=fsfn;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fsfn.addNext(fon2);
+ last=fon2;
+ }
+ return new NodePair(first, last);
+ } else {
+ if (nn.getField()!=null) {
+ //It is a field
+ //Get src value
+
+ //See if we need to perform an operation
+ if (base!=null) {
+ //If it is a preinc we need to store the initial value
+ TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
+ TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
+
+ FlatFieldNode ffn=new FlatFieldNode(nn.getField(), getTempforVar(nn.getVar()), src_tmp2);
+ if (first==null)
+ first=ffn;
+ else {
+ last.addNext(ffn);
+ }
+ last=ffn;
+
+
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
+ src_tmp=tmp;
+ last.addNext(fc);
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+ FlatSetFieldNode fsfn=new FlatSetFieldNode(getTempforVar(nn.getVar()), nn.getField(), src_tmp);
+ if (first==null) {
+ first=fsfn;
+ } else {
+ last.addNext(fsfn);
+ }
+ last=fsfn;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fsfn.addNext(fon2);
+ last=fon2;
+ }
+ return new NodePair(first, last);
+ } else {
+ //It is a variable
+ //See if we need to perform an operation
+
+ if (base!=null) {
+ //If it is a preinc we need to store the initial value
+ TempDescriptor src_tmp2=getTempforVar(nn.getVar());
+ TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
+ if (!pre) {
+ FlatOpNode fon=new FlatOpNode(out_temp, src_tmp2, null, new Operation(Operation.ASSIGN));
+ if (first==null)
+ first=fon;
+ else
+ last.addNext(fon);
+ last=fon;
+ }
+
+
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat2", new TypeDescriptor[] {new TypeDescriptor(stringcd), new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, null, new TempDescriptor[] {src_tmp2, src_tmp});
+ if (first==null)
+ first=fc;
+ else
+ last.addNext(fc);
+ src_tmp=tmp;
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ if (first==null)
+ first=fon;
+ else
+ last.addNext(fon);
+ src_tmp=tmp;
+ last=fon;
+ }
+ }
+
+ FlatOpNode fon=new FlatOpNode(getTempforVar(nn.getVar()), src_tmp, null, new Operation(Operation.ASSIGN));
+ last.addNext(fon);
+ last=fon;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fon.addNext(fon2);
+ last=fon2;
+ }
+ return new NodePair(first, last);
+ }
+ }
+ }
throw new Error();
}
- private NodePair flattenExpressionNode(ExpressionNode en) {
+ private NodePair flattenNameNode(NameNode nn,TempDescriptor out_temp) {
+ if (nn.getExpression()!=null) {
+ /* Hack - use subtree instead */
+ return flattenExpressionNode(nn.getExpression(),out_temp);
+ } else if (nn.getField()!=null) {
+ TempDescriptor tmp=getTempforVar(nn.getVar());
+ FlatFieldNode ffn=new FlatFieldNode(nn.getField(), tmp, out_temp);
+ return new NodePair(ffn,ffn);
+ } else {
+ TempDescriptor tmp=getTempforVar(nn.isTag()?nn.getTagVar():nn.getVar());
+ if (nn.isTag()) {
+ //propagate tag
+ out_temp.setTag(tmp.getTag());
+ }
+ FlatOpNode fon=new FlatOpNode(out_temp, tmp, null, new Operation(Operation.ASSIGN));
+ return new NodePair(fon,fon);
+ }
+ }
+
+ private NodePair flattenOpNode(OpNode on,TempDescriptor out_temp) {
+ TempDescriptor temp_left=TempDescriptor.tempFactory("leftop",on.getLeft().getType());
+ TempDescriptor temp_right=null;
+
+ Operation op=on.getOp();
+
+ NodePair left=flattenExpressionNode(on.getLeft(),temp_left);
+ NodePair right;
+ if (on.getRight()!=null) {
+ temp_right=TempDescriptor.tempFactory("rightop",on.getRight().getType());
+ right=flattenExpressionNode(on.getRight(),temp_right);
+ } else {
+ FlatNop nop=new FlatNop();
+ right=new NodePair(nop,nop);
+ }
+
+ if (op.getOp()==Operation.LOGIC_OR) {
+ /* Need to do shortcircuiting */
+ FlatCondBranch fcb=new FlatCondBranch(temp_left);
+ FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
+ FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
+ FlatNop fnop=new FlatNop();
+ left.getEnd().addNext(fcb);
+ fcb.addFalseNext(right.getBegin());
+ right.getEnd().addNext(fon2);
+ fon2.addNext(fnop);
+ fcb.addTrueNext(fon1);
+ fon1.addNext(fnop);
+ return new NodePair(left.getBegin(), fnop);
+ } else if (op.getOp()==Operation.LOGIC_AND) {
+ /* Need to do shortcircuiting */
+ FlatCondBranch fcb=new FlatCondBranch(temp_left);
+ FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
+ FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
+ FlatNop fnop=new FlatNop();
+ left.getEnd().addNext(fcb);
+ fcb.addTrueNext(right.getBegin());
+ right.getEnd().addNext(fon2);
+ fon2.addNext(fnop);
+ fcb.addFalseNext(fon1);
+ fon1.addNext(fnop);
+ return new NodePair(left.getBegin(), fnop);
+ } else if (op.getOp()==Operation.ADD&&on.getLeft().getType().isString()) {
+ //We have a string concatenate
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, out_temp, temp_left, new TempDescriptor[] {temp_right});
+ left.getEnd().addNext(right.getBegin());
+ right.getEnd().addNext(fc);
+ return new NodePair(left.getBegin(), fc);
+ }
+
+ FlatOpNode fon=new FlatOpNode(out_temp,temp_left,temp_right,op);
+ left.getEnd().addNext(right.getBegin());
+ right.getEnd().addNext(fon);
+ return new NodePair(left.getBegin(),fon);
+ }
+
+ private NodePair flattenExpressionNode(ExpressionNode en, TempDescriptor out_temp) {
+ switch(en.kind()) {
+ case Kind.AssignmentNode:
+ return flattenAssignmentNode((AssignmentNode)en,out_temp);
+ case Kind.CastNode:
+ return flattenCastNode((CastNode)en,out_temp);
+ case Kind.CreateObjectNode:
+ return flattenCreateObjectNode((CreateObjectNode)en,out_temp);
+ case Kind.FieldAccessNode:
+ return flattenFieldAccessNode((FieldAccessNode)en,out_temp);
+ case Kind.ArrayAccessNode:
+ return flattenArrayAccessNode((ArrayAccessNode)en,out_temp);
+ case Kind.LiteralNode:
+ return flattenLiteralNode((LiteralNode)en,out_temp);
+ case Kind.MethodInvokeNode:
+ return flattenMethodInvokeNode((MethodInvokeNode)en,out_temp);
+ case Kind.NameNode:
+ return flattenNameNode((NameNode)en,out_temp);
+ case Kind.OpNode:
+ return flattenOpNode((OpNode)en,out_temp);
+ }
throw new Error();
}
private NodePair flattenDeclarationNode(DeclarationNode dn) {
- throw new Error();
+ VarDescriptor vd=dn.getVarDescriptor();
+ TempDescriptor td=getTempforVar(vd);
+ if (dn.getExpression()!=null)
+ return flattenExpressionNode(dn.getExpression(),td);
+ else {
+ FlatNop fn=new FlatNop();
+ return new NodePair(fn,fn);
+ }
}
-
+
+ private NodePair flattenTagDeclarationNode(TagDeclarationNode dn) {
+ TagVarDescriptor tvd=dn.getTagVarDescriptor();
+ TagDescriptor tag=tvd.getTag();
+ TempDescriptor tmp=getTempforVar(tvd);
+ FlatTagDeclaration ftd=new FlatTagDeclaration(tag, tmp);
+ return new NodePair(ftd,ftd);
+ }
+
+ private TempDescriptor getTempforParam(Descriptor d) {
+ if (temptovar.containsKey(d))
+ return (TempDescriptor)temptovar.get(d);
+ else {
+ if (d instanceof VarDescriptor) {
+ VarDescriptor vd=(VarDescriptor)d;
+ TempDescriptor td=TempDescriptor.paramtempFactory(vd.getName(),vd.getType());
+ temptovar.put(vd,td);
+ return td;
+ } else if (d instanceof TagVarDescriptor) {
+ TagVarDescriptor tvd=(TagVarDescriptor)d;
+ TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
+ TempDescriptor td=TempDescriptor.paramtempFactory(tvd.getName(), tagtype, tvd.getTag());
+ temptovar.put(tvd,td);
+ return td;
+ } else throw new Error("Unreconized Descriptor");
+ }
+ }
+
+ private TempDescriptor getTempforVar(Descriptor d) {
+ if (temptovar.containsKey(d))
+ return (TempDescriptor)temptovar.get(d);
+ else {
+ if (d instanceof VarDescriptor) {
+ VarDescriptor vd=(VarDescriptor)d;
+ TempDescriptor td=TempDescriptor.tempFactory(vd.getName(), vd.getType());
+ temptovar.put(vd,td);
+ return td;
+ } else if (d instanceof TagVarDescriptor) {
+ TagVarDescriptor tvd=(TagVarDescriptor)d;
+ //BUGFIX TAGTYPE - add next line, modify following
+ //line to tag this new type descriptor, modify
+ //TempDescriptor constructor & factory to set type
+ //using this Type To test, use any program with tags
+ TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
+ TempDescriptor td=TempDescriptor.tempFactory(tvd.getName(),tagtype, tvd.getTag());
+ temptovar.put(tvd,td);
+ return td;
+ } else throw new Error("Unrecognized Descriptor");
+ }
+ }
+
private NodePair flattenIfStatementNode(IfStatementNode isn) {
- throw new Error();
+ TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.BOOLEAN));
+ NodePair cond=flattenExpressionNode(isn.getCondition(),cond_temp);
+ FlatCondBranch fcb=new FlatCondBranch(cond_temp);
+ NodePair true_np=flattenBlockNode(isn.getTrueBlock());
+ NodePair false_np;
+ FlatNop nopend=new FlatNop();
+
+ if (isn.getFalseBlock()!=null)
+ false_np=flattenBlockNode(isn.getFalseBlock());
+ else {
+ FlatNop nop=new FlatNop();
+ false_np=new NodePair(nop,nop);
+ }
+
+ cond.getEnd().addNext(fcb);
+ fcb.addTrueNext(true_np.getBegin());
+ fcb.addFalseNext(false_np.getBegin());
+ true_np.getEnd().addNext(nopend);
+ false_np.getEnd().addNext(nopend);
+ return new NodePair(cond.getBegin(), nopend);
}
private NodePair flattenLoopNode(LoopNode ln) {
if (ln.getType()==LoopNode.FORLOOP) {
NodePair initializer=flattenBlockNode(ln.getInitializer());
- TempDescriptor cond_temp=TempDescriptor.tempFactory("condition");
- NodePair condition=flattenExpressionNode(ln.getCondition());
+ TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
+ NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
NodePair update=flattenBlockNode(ln.getUpdate());
NodePair body=flattenBlockNode(ln.getBody());
FlatNode begin=initializer.getBegin();
FlatCondBranch fcb=new FlatCondBranch(cond_temp);
+ fcb.setTrueProb(State.TRUEPROB);
+ fcb.setLoop();
FlatNop nopend=new FlatNop();
+ FlatBackEdge backedge=new FlatBackEdge();
- initializer.getEnd().addNext(condition.getBegin());
+ FlatNop nop2=new FlatNop();
+ initializer.getEnd().addNext(nop2);
+ nop2.addNext(condition.getBegin());
body.getEnd().addNext(update.getBegin());
- update.getEnd().addNext(condition.getBegin());
+ update.getEnd().addNext(backedge);
+ backedge.addNext(condition.getBegin());
condition.getEnd().addNext(fcb);
fcb.addFalseNext(nopend);
fcb.addTrueNext(body.getBegin());
return new NodePair(begin,nopend);
} else if (ln.getType()==LoopNode.WHILELOOP) {
- TempDescriptor cond_temp=TempDescriptor.tempFactory("condition");
- NodePair condition=flattenExpressionNode(ln.getCondition());
+ TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
+ NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
NodePair body=flattenBlockNode(ln.getBody());
FlatNode begin=condition.getBegin();
FlatCondBranch fcb=new FlatCondBranch(cond_temp);
+ fcb.setTrueProb(State.TRUEPROB);
+ fcb.setLoop();
FlatNop nopend=new FlatNop();
+ FlatBackEdge backedge=new FlatBackEdge();
+
+ body.getEnd().addNext(backedge);
+ backedge.addNext(condition.getBegin());
- body.getEnd().addNext(condition.getBegin());
condition.getEnd().addNext(fcb);
fcb.addFalseNext(nopend);
fcb.addTrueNext(body.getBegin());
return new NodePair(begin,nopend);
} else if (ln.getType()==LoopNode.DOWHILELOOP) {
- TempDescriptor cond_temp=TempDescriptor.tempFactory("condition");
- NodePair condition=flattenExpressionNode(ln.getCondition());
+ TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
+ NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
NodePair body=flattenBlockNode(ln.getBody());
FlatNode begin=body.getBegin();
FlatCondBranch fcb=new FlatCondBranch(cond_temp);
+ fcb.setTrueProb(State.TRUEPROB);
+ fcb.setLoop();
FlatNop nopend=new FlatNop();
+ FlatBackEdge backedge=new FlatBackEdge();
body.getEnd().addNext(condition.getBegin());
condition.getEnd().addNext(fcb);
fcb.addFalseNext(nopend);
- fcb.addTrueNext(body.getBegin());
+ fcb.addTrueNext(backedge);
+ backedge.addNext(body.getBegin());
return new NodePair(begin,nopend);
} else throw new Error();
}
- private NodePair flattenReturnNode(IR.Tree.ReturnNode rntree) {
- throw new Error();
+ private NodePair flattenReturnNode(ReturnNode rntree) {
+ TempDescriptor retval=null;
+ NodePair cond=null;
+ if (rntree.getReturnExpression()!=null) {
+ retval=TempDescriptor.tempFactory("ret_value", rntree.getReturnExpression().getType());
+ cond=flattenExpressionNode(rntree.getReturnExpression(),retval);
+ }
+
+ FlatReturnNode rnflat=new FlatReturnNode(retval);
+ FlatNode ln=rnflat;
+ if (state.THREAD&&currmd.getModifiers().isSynchronized()) {
+ MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
+ TempDescriptor thistd=getTempforVar(currmd.getThis());
+ FlatCall fc=new FlatCall(memd, null, thistd, new TempDescriptor[0]);
+ fc.addNext(ln);
+ ln=fc;
+ }
+ if (state.DSM&&currmd.getModifiers().isAtomic()) {
+ FlatAtomicExitNode faen=new FlatAtomicExitNode(curran);
+ faen.addNext(ln);
+ ln=faen;
+ }
+
+ if (cond!=null) {
+ cond.getEnd().addNext(ln);
+ return new NodePair(cond.getBegin(),rnflat);
+ } else
+ return new NodePair(ln,rnflat);
}
+
+ private NodePair flattenTaskExitNode(TaskExitNode ten) {
+ FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.TASKEXIT);
+ updateFlagActionNode(ffan, ten.getFlagEffects());
+ NodePair fcn=flattenConstraintCheck(ten.getChecks());
+ ffan.addNext(fcn.getBegin());
+ FlatReturnNode rnflat=new FlatReturnNode(null);
+ fcn.getEnd().addNext(rnflat);
+ return new NodePair(ffan, rnflat);
+ }
+
+ private NodePair flattenConstraintCheck(Vector ccs) {
+ FlatNode begin=new FlatNop();
+ if (ccs==null)
+ return new NodePair(begin,begin);
+ FlatNode last=begin;
+ for(int i=0;i<ccs.size();i++) {
+ ConstraintCheck cc=(ConstraintCheck) ccs.get(i);
+ /* Flatten the arguments */
+ TempDescriptor[] temps=new TempDescriptor[cc.numArgs()];
+ String[] vars=new String[cc.numArgs()];
+ for(int j=0;j<cc.numArgs();j++) {
+ ExpressionNode en=cc.getArg(j);
+ TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
+ temps[j]=td;
+ vars[j]=cc.getVar(j);
+ NodePair np=flattenExpressionNode(en, td);
+ last.addNext(np.getBegin());
+ last=np.getEnd();
+ }
+ FlatCheckNode fcn=new FlatCheckNode(cc.getSpec(), vars, temps);
+ last.addNext(fcn);
+ last=fcn;
+ }
+ return new NodePair(begin,last);
+ }
+
private NodePair flattenSubBlockNode(SubBlockNode sbn) {
return flattenBlockNode(sbn.getBlockNode());
}
+ private NodePair flattenAtomicNode(AtomicNode sbn) {
+ NodePair np=flattenBlockNode(sbn.getBlockNode());
+ FlatAtomicEnterNode faen=new FlatAtomicEnterNode();
+ FlatAtomicExitNode faexn=new FlatAtomicExitNode(faen);
+ faen.addNext(np.getBegin());
+ np.getEnd().addNext(faexn);
+ return new NodePair(faen, faexn);
+ }
+
private NodePair flattenBlockStatementNode(BlockStatementNode bsn) {
switch(bsn.kind()) {
case Kind.BlockExpressionNode:
case Kind.DeclarationNode:
return flattenDeclarationNode((DeclarationNode)bsn);
+
+ case Kind.TagDeclarationNode:
+ return flattenTagDeclarationNode((TagDeclarationNode)bsn);
case Kind.IfStatementNode:
return flattenIfStatementNode((IfStatementNode)bsn);
case Kind.ReturnNode:
return flattenReturnNode((IR.Tree.ReturnNode)bsn);
+
+ case Kind.TaskExitNode:
+ return flattenTaskExitNode((IR.Tree.TaskExitNode)bsn);
case Kind.SubBlockNode:
return flattenSubBlockNode((SubBlockNode)bsn);
+
+ case Kind.AtomicNode:
+ return flattenAtomicNode((AtomicNode)bsn);
}
throw new Error();
projects / IRC.git / blobdiff