package IR.Flat;
import IR.*;
import IR.Tree.*;
+
import java.util.*;
public class BuildFlat {
- State state;
- Hashtable temptovar;
+ State state;
+ Hashtable temptovar;
+ MethodDescriptor currmd;
+ TypeUtil typeutil;
+
+ HashSet breakset;
+ HashSet continueset;
+ FlatExit fe;
+
+ // for synchronized blocks
+ Stack<TempDescriptor> lockStack;
+
+ // maps tree node to the set of flat node that is translated from the tree node
+ // WARNING: ONLY DID FOR NAMENODE NOW!
+ Hashtable<TreeNode,Set<FlatNode>> mapNode2FlatNodeSet;
+
+ public BuildFlat(State st, TypeUtil typeutil) {
+ state=st;
+ temptovar=new Hashtable();
+ this.typeutil=typeutil;
+ this.breakset=new HashSet();
+ this.continueset=new HashSet();
+ this.lockStack = new Stack<TempDescriptor>();
+ this.mapNode2FlatNodeSet=new Hashtable<TreeNode,Set<FlatNode>>();
+ }
- public BuildFlat(State st) {
- state=st;
- temptovar=new Hashtable();
+ public Hashtable getMap() {
+ return temptovar;
+ }
+
+ public void buildFlat() {
+ Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
+ while(it.hasNext()) {
+ ClassDescriptor cn=(ClassDescriptor)it.next();
+ flattenClass(cn);
}
- public Hashtable getMap() {
- return temptovar;
+ Iterator task_it=state.getTaskSymbolTable().getDescriptorsIterator();
+ while(task_it.hasNext()) {
+ TaskDescriptor td=(TaskDescriptor)task_it.next();
+ flattenTask(td);
}
+ }
- public void buildFlat() {
- Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
- while(it.hasNext()) {
- ClassDescriptor cn=(ClassDescriptor)it.next();
- flattenClass(cn);
- }
+ private void flattenTask(TaskDescriptor td) {
+ BlockNode bn=state.getMethodBody(td);
+ NodePair np=flattenBlockNode(bn);
+ FlatNode fn=np.getBegin();
+ fe=new FlatExit();
+ FlatNode fn2=np.getEnd();
+
+ if (fn2!=null&& fn2.kind()!=FKind.FlatReturnNode) {
+ FlatReturnNode rnflat=new FlatReturnNode(null);
+ rnflat.addNext(fe);
+ fn2.addNext(rnflat);
}
-
- 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);
- if (!md.isStatic())
- fm.addParameterTemp(getTempforVar(md.getThis()));
- for(int i=0;i<md.numParameters();i++) {
- fm.addParameterTemp(getTempforVar(md.getParameter(i)));
- }
- System.out.println(fm.printMethod());
- state.addFlatCode(md,fm);
- }
+
+ FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.PRE);
+ ffan.setNumLine(bn.getNumLine());
+ ffan.addNext(fn);
+
+ FlatMethod fm=new FlatMethod(td, fe);
+ 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);
+ }
}
- private NodePair flattenBlockNode(BlockNode bn) {
- FlatNode begin=null;
- FlatNode end=null;
- for(int i=0;i<bn.size();i++) {
- NodePair np=flattenBlockStatementNode(bn.get(i));
- FlatNode np_begin=np.getBegin();
- FlatNode np_end=np.getEnd();
- if (begin==null) {
- begin=np_begin;
- }
- if (end==null) {
- end=np_end;
- } else {
- end.addNext(np_begin);
- end=np_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);
- 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);
- return new NodePair(fn,fc);
- } 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]);
- last.addNext(fn);
- if (temps.length>1) {
- NodePair np=generateNewArrayLoop(temps, td.dereference(), out_temp, 0);
- fn.addNext(np.getBegin());
- return new NodePair(first,np.getEnd());
- } else
- return new NodePair(first, fn);
- }
+ /* 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());
+ }
}
+ }
- private NodePair generateNewArrayLoop(TempDescriptor[] temparray, TypeDescriptor td, TempDescriptor tmp, int i) {
- 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);
- //is index<temp[i]
- TempDescriptor new_tmp=TempDescriptor.tempFactory("tmp",td);
- FlatNew fn=new FlatNew(td, new_tmp, temparray[i+1]);
- 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);
- fsen.addNext(np2.getBegin());
- np2.getEnd().addNext(fon);
- } else {
- fsen.addNext(fon);
- }
- fon.addNext(fcomp);
- return new NodePair(fln, fnop);
+ FlatAtomicEnterNode curran=null;
+
+ private FlatNode spliceReturn(FlatNode fn) {
+ FlatReturnNode rnflat=null;
+ if (currmd.getReturnType()==null||currmd.getReturnType().isVoid()) {
+ rnflat=new FlatReturnNode(null);
+ fn.addNext(rnflat);
+ } else {
+ TempDescriptor tmp=TempDescriptor.tempFactory("rettmp",currmd.getReturnType());
+ Object o=null;
+ if (currmd.getReturnType().isPtr()) {
+ o=null;
+ } else if (currmd.getReturnType().isByte()) {
+ o=new Byte((byte)0);
+ } else if (currmd.getReturnType().isShort()) {
+ o=new Short((short)0);
+ } else if (currmd.getReturnType().isChar()) {
+ o=new Character('\0');
+ } else if (currmd.getReturnType().isInt()) {
+ o=new Integer(0);
+ } else if (currmd.getReturnType().isLong()) {
+ o=new Long(0);
+ } else if (currmd.getReturnType().isBoolean()) {
+ o=new Boolean(false);
+ } else if (currmd.getReturnType().isFloat()) {
+ o=new Float(0.0);
+ } else if (currmd.getReturnType().isDouble()) {
+ o=new Double(0.0);
+ }
+
+
+ FlatLiteralNode fln=new FlatLiteralNode(currmd.getReturnType(),o,tmp);
+ rnflat=new FlatReturnNode(tmp);
+ fln.addNext(rnflat);
+ fn.addNext(fln);
}
+ return rnflat;
+ }
- private NodePair flattenMethodInvokeNode(MethodInvokeNode min,TempDescriptor out_temp) {
- TempDescriptor[] temps=new TempDescriptor[min.numArgs()];
- FlatNode first=null;
- FlatNode last=null;
- TempDescriptor thisarg=null;
+ private void flattenClass(ClassDescriptor cn) {
+ Iterator methodit=cn.getMethods();
+ while(methodit.hasNext()) {
+ flattenMethod(cn, (MethodDescriptor)methodit.next());
+ }
+ }
- 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();
- }
+ public void addJustFlatMethod(MethodDescriptor md) {
+ if (state.getMethodFlat(md)==null) {
+ FlatMethod fm=new FlatMethod(md, fe);
+ if (!md.isStatic())
+ fm.addParameterTemp(getTempforParam(md.getThis()));
+ for(int i=0; i<md.numParameters(); i++) {
+ fm.addParameterTemp(getTempforParam(md.getParameter(i)));
+ }
+ state.addFlatCode(md,fm);
+ }
+ }
- 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) {
- // Two cases:
- // left side is variable
- // left side is field
+ public void flattenMethod(ClassDescriptor cn, MethodDescriptor md) {
+ // if OOOJava is on, splice a special SESE in to
+ // enclose the main method
+ currmd=md;
+ boolean spliceInImplicitMain = state.OOOJAVA && currmd.equals(typeutil.getMain() );
+
+ FlatSESEEnterNode spliceSESE = null;
+ FlatSESEExitNode spliceExit = null;
+
+ if( spliceInImplicitMain ) {
+ SESENode mainTree = new SESENode("main");
+ spliceSESE = new FlatSESEEnterNode(mainTree);
+ spliceExit = new FlatSESEExitNode(mainTree);
+ spliceSESE.setFlatExit(spliceExit);
+ spliceExit.setFlatEnter(spliceSESE);
+ spliceSESE.setIsMainSESE();
+ }
+
+ fe=new FlatExit();
+ BlockNode bn=state.getMethodBody(currmd);
+
+ if (state.DSM&&currmd.getModifiers().isAtomic()) {
+ FlatAtomicEnterNode faen=new FlatAtomicEnterNode();
+ faen.setNumLine(bn.getNumLine());
+ curran = faen;
+ } else
+ curran=null;
+ if ((state.THREAD||state.MGC)&&currmd.getModifiers().isSynchronized()) {
+ TempDescriptor thistd = null;
+ if(currmd.getModifiers().isStatic()) {
+ // need to lock the Class object
+ thistd=new TempDescriptor("classobj", cn);
+ } else {
+ // lock this object
+ thistd=getTempforVar(currmd.getThis());
+ }
+ if(!this.lockStack.isEmpty()) {
+ throw new Error("The lock stack for synchronized blocks/methods is not empty!");
+ }
+ this.lockStack.push(thistd);
+ }
+ NodePair np=flattenBlockNode(bn);
+ FlatNode fn=np.getBegin();
+ if ((state.THREAD||state.MGC)&&currmd.getModifiers().isSynchronized()) {
+ if (state.JNI) {
+ //XXXXXXXX: FIX THIS
+ this.lockStack.clear();
+ } else {
+ MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorEnter");
+ FlatNode first = null;
+ FlatNode end = null;
- Operation base=an.getOperation().getBaseOp();
- TempDescriptor src_tmp=TempDescriptor.tempFactory("src",an.getSrc().getType());
- NodePair np_src=flattenExpressionNode(an.getSrc(),src_tmp);
- FlatNode last=np_src.getEnd();
- if (base!=null) {
- TempDescriptor src_tmp2=TempDescriptor.tempFactory("tmp", an.getDest().getType());
- NodePair np_dst_init=flattenExpressionNode(an.getDest(),src_tmp2);
- last.addNext(np_dst_init.getBegin());
- TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst_tmp",an.getDest().getType());
- FlatOpNode fon=new FlatOpNode(dst_tmp, src_tmp,src_tmp2, base);
- np_dst_init.getEnd().addNext(fon);
- last=fon;
- src_tmp=dst_tmp;
+ {
+ if (lockStack.size()!=1) {
+ throw new Error("TOO MANY THINGS ON LOCKSTACK");
+ }
+ TempDescriptor thistd = this.lockStack.elementAt(0);
+ FlatCall fc = new FlatCall(memd, null, thistd, new TempDescriptor[0]);
+ fc.setNumLine(bn.getNumLine());
+ first = end = fc;
}
- if (an.getDest().kind()==Kind.FieldAccessNode) {
- FieldAccessNode fan=(FieldAccessNode)an.getDest();
- ExpressionNode en=fan.getExpression();
- TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
- NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
- last.addNext(np_baseexp.getBegin());
- FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
- np_baseexp.getEnd().addNext(fsfn);
- return new NodePair(np_src.getBegin(), fsfn);
- } else if (an.getDest().kind()==Kind.ArrayAccessNode) {
- 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);
- last.addNext(np_baseexp.getBegin());
- np_baseexp.getEnd().addNext(np_indexexp.getBegin());
- FlatSetElementNode fsen=new FlatSetElementNode(dst_tmp, index_tmp, src_tmp);
- np_indexexp.getEnd().addNext(fsen);
- return new NodePair(np_src.getBegin(), fsen);
- } else if (an.getDest().kind()==Kind.NameNode) {
- NameNode nn=(NameNode)an.getDest();
- if (nn.getExpression()!=null) {
- FieldAccessNode fan=(FieldAccessNode)nn.getExpression();
- ExpressionNode en=fan.getExpression();
- TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
- NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
- last.addNext(np_baseexp.getBegin());
- FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
- np_baseexp.getEnd().addNext(fsfn);
- return new NodePair(np_src.getBegin(), fsfn);
- } else {
- if (nn.getField()!=null) {
- FlatSetFieldNode fsfn=new FlatSetFieldNode(getTempforVar(nn.getVar()), nn.getField(), src_tmp);
- last.addNext(fsfn);
- return new NodePair(np_src.getBegin(), fsfn);
- } else {
- FlatOpNode fon=new FlatOpNode(getTempforVar(nn.getVar()), src_tmp, null, new Operation(Operation.ASSIGN));
- last.addNext(fon);
- return new NodePair(np_src.getBegin(),fon);
- }
- }
- }
- throw new Error();
- }
-
- 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);
+ end.addNext(fn);
+ fn=first;
+ end = np.getEnd();
+ if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
+ MethodDescriptor memdex=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
+ while(!this.lockStack.isEmpty()) {
+ TempDescriptor thistd = this.lockStack.pop();
+ FlatCall fcunlock = new FlatCall(memdex, null, thistd, new TempDescriptor[0]);
+ fcunlock.setNumLine(bn.getNumLine());
+ end.addNext(fcunlock);
+ end = fcunlock;
+ }
+ FlatNode rnflat=spliceReturn(end);
+ rnflat.addNext(fe);
} else {
- TempDescriptor tmp=getTempforVar(nn.getVar());
- FlatOpNode fon=new FlatOpNode(out_temp, tmp, null, new Operation(Operation.ASSIGN));
- return new NodePair(fon,fon);
+ this.lockStack.clear();
}
+ }
+ } else if (state.DSM&&currmd.getModifiers().isAtomic()) {
+ curran.addNext(fn);
+ fn=curran;
+ if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
+ FlatAtomicExitNode aen=new FlatAtomicExitNode(curran);
+ np.getEnd().addNext(aen);
+ FlatNode rnflat=spliceReturn(aen);
+ rnflat.addNext(fe);
+ }
+ } else if (np.getEnd()!=null&&np.getEnd().kind()!=FKind.FlatReturnNode) {
+ FlatNode rnflat=null;
+ if( spliceInImplicitMain ) {
+ np.getEnd().addNext(spliceExit);
+ rnflat=spliceReturn(spliceExit);
+ } else {
+ rnflat=spliceReturn(np.getEnd());
+ }
+ rnflat.addNext(fe);
+ } else if (np.getEnd()!=null) {
+ if( spliceInImplicitMain ) {
+ FlatReturnNode rnflat=(FlatReturnNode)np.getEnd();
+ np.getEnd().addNext(spliceExit);
+ spliceExit.addNext(fe);
+ }
+ }
+ if( spliceInImplicitMain ) {
+ spliceSESE.addNext(fn);
+ fn=spliceSESE;
}
- 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();
- if (op.getOp()==Operation.POSTINC||
- op.getOp()==Operation.POSTDEC||
- op.getOp()==Operation.PREINC||
- op.getOp()==Operation.PREDEC) {
- LiteralNode ln=new LiteralNode("int",new Integer(1));
- ln.setType(new TypeDescriptor(TypeDescriptor.INT));
- AssignmentNode an=new AssignmentNode(on.getLeft(),ln,
- new AssignOperation((op.getOp()==Operation.POSTINC||op.getOp()==Operation.PREINC)?AssignOperation.PLUSEQ:AssignOperation.MINUSEQ));
- if (op.getOp()==Operation.POSTINC||
- op.getOp()==Operation.POSTDEC) {
- NodePair left=flattenExpressionNode(on.getLeft(),out_temp);
- NodePair assign=flattenAssignmentNode(an,temp_left);
- left.getEnd().addNext(assign.getBegin());
- return new NodePair(left.getBegin(),assign.getEnd());
- } else {
- NodePair assign=flattenAssignmentNode(an,out_temp);
- return assign;
- }
- }
-
- 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);
- }
+ FlatMethod fm=new FlatMethod(currmd, fe);
+ fm.setNumLine(bn.getNumLine());
+ 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);
+ }
- 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);
- }
+ private NodePair flattenBlockNode(BlockNode bn) {
+ FlatNode begin=null;
+ FlatNode end=null;
+ for(int i=0; i<bn.size(); i++) {
+ NodePair np=flattenBlockStatementNode(bn.get(i));
+ FlatNode np_begin=np.getBegin();
+ FlatNode np_end=np.getEnd();
+ if (begin==null) {
+ begin=np_begin;
+ }
+ if (end==null) {
+ end=np_end;
+ } else {
+ end.addNext(np_begin);
+ if (np_end==null) {
+ return new NodePair(begin, null);
+ } else
+ end=np_end;
+ }
+ }
+ if (begin==null) {
+ end=begin=new FlatNop();
+ }
+ return new NodePair(begin,end);
+ }
- 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 flattenBlockExpressionNode(BlockExpressionNode en) {
+ //System.out.println("DEBUG -> inside flattenBlockExpressionNode\n");
+ 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);
+ fcn.setNumLine(cn.getNumLine());
+ 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);
+ fln.setNumLine(ln.getNumLine());
+ return new NodePair(fln,fln);
+ }
+
+ private NodePair flattenOffsetNode(OffsetNode ofn, TempDescriptor out_temp) {
+ FlatOffsetNode fln = new FlatOffsetNode(ofn.getClassType(), ofn.getField(), out_temp);
+ fln.setNumLine(ofn.getNumLine());
+ return new NodePair(fln, fln);
+ }
+
+ private NodePair flattenCreateObjectNode(CreateObjectNode con,TempDescriptor out_temp) {
+ TypeDescriptor td=con.getType();
+ if (!td.isArray()) {
+ FlatNode fn=new FlatNew(td, out_temp, con.isGlobal(), con.getDisjointId());
+ FlatNode last=fn;
+ //handle wrapper fields
+ ClassDescriptor cd=td.getClassDesc();
+ for(Iterator fieldit=cd.getFields(); fieldit.hasNext(); ) {
+ FieldDescriptor fd=(FieldDescriptor)fieldit.next();
+ if (fd.getType().iswrapper()) {
+ TempDescriptor wrap_tmp=TempDescriptor.tempFactory("wrapper_obj",fd.getType());
+ FlatNode fnwrapper=new FlatNew(fd.getType(), wrap_tmp, con.isGlobal());
+ fnwrapper.setNumLine(con.getNumLine());
+ FlatSetFieldNode fsfn=new FlatSetFieldNode(out_temp, fd, wrap_tmp);
+ fsfn.setNumLine(con.getNumLine());
+ last.addNext(fnwrapper);
+ fnwrapper.addNext(fsfn);
+ last=fsfn;
+ }
+ }
+
+ TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
+
+ // 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);
+ fc.setNumLine(con.getNumLine());
+ last.addNext(fc);
+ last=fc;
+ if (td.getClassDesc().hasFlags()) {
+ // if (con.getFlagEffects()!=null) {
+ FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.NEWOBJECT);
+ ffan.setNumLine(con.getNumLine());
+ 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 {
+ if(con.getArrayInitializer() == null) {
+ 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(), con.getDisjointId());
+ 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 if (td.isArray()&&td.dereference().iswrapper()) {
+ 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);
+ } else {
+ // array creation with initializers
+ return flattenArrayInitializerNode(con.getArrayInitializer(), out_temp);
+ }
}
+ }
- private NodePair flattenDeclarationNode(DeclarationNode dn) {
- 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 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=td.iswrapper()?new FlatNew(td, new_tmp, isglobal):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 if (td.isArray()&&td.dereference().iswrapper()) {
+ NodePair np2=generateNewArrayLoop(temparray, td.dereference(), new_tmp, i+1, isglobal);
+ fsen.addNext(np2.getBegin());
+ np2.getEnd().addNext(fon);
+ } else {
+ fsen.addNext(fon);
}
-
- private TempDescriptor getTempforVar(VarDescriptor vd) {
- if (temptovar.containsKey(vd))
- return (TempDescriptor)temptovar.get(vd);
- else {
- TempDescriptor td=TempDescriptor.tempFactory(vd.getName(),vd.getType());
- temptovar.put(vd,td);
- return td;
- }
+ 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) {
+ TypeDescriptor mtd = min.getExpression().getType();
+ if(mtd.isClass() && mtd.getClassDesc().isEnum()) {
+ mtd = new TypeDescriptor(TypeDescriptor.INT);
+ }
+ thisarg=TempDescriptor.tempFactory("thisarg", mtd);
+ NodePair np=flattenExpressionNode(min.getExpression(),thisarg);
+ first=np.getBegin();
+ last=np.getEnd();
}
- private NodePair flattenIfStatementNode(IfStatementNode isn) {
- 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();
+ //Build arguments
+ for(int i=0; i<min.numArgs(); i++) {
+ ExpressionNode en=min.getArg(i);
+ TypeDescriptor etd = en.getType();
+ if(etd.isClass() && etd.getClassDesc().isEnum()) {
+ etd = new TypeDescriptor(TypeDescriptor.INT);
+ }
+ TempDescriptor td=TempDescriptor.tempFactory("arg", etd);
+ temps[i]=td;
+ NodePair np=flattenExpressionNode(en, td);
+ if (first==null)
+ first=np.getBegin();
+ else
+ last.addNext(np.getBegin());
+ last=np.getEnd();
+ }
- if (isn.getFalseBlock()!=null)
- false_np=flattenBlockNode(isn.getFalseBlock());
- else {
- FlatNop nop=new FlatNop();
- false_np=new NodePair(nop,nop);
- }
+ MethodDescriptor md=min.getMethod();
+
+ //Call to constructor
+
+ FlatCall fc;
+ if(md.getReturnType()==null||md.getReturnType().isVoid())
+ fc=new FlatCall(md, null, thisarg, temps, min.getSuper());
+ else
+ fc=new FlatCall(md, out_temp, thisarg, temps, min.getSuper());
+
+ fc.setNumLine(min.getNumLine());
- 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);
+ if (first==null) {
+ first=fc;
+ } else
+ last.addNext(fc);
+ return new NodePair(first,fc);
+ }
+
+ private NodePair flattenFieldAccessNode(FieldAccessNode fan,TempDescriptor out_temp) {
+ TempDescriptor tmp=null;
+ if(fan.getExpression().getType().isClassNameRef()) {
+ // static field dereference with class name
+ tmp = new TempDescriptor(fan.getExpression().getType().getClassDesc().getSymbol(), fan.getExpression().getType());
+ FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
+ fn.setNumLine(fan.getNumLine());
+ return new NodePair(fn,fn);
+ } else {
+ tmp=TempDescriptor.tempFactory("temp",fan.getExpression().getType());
+ NodePair npe=flattenExpressionNode(fan.getExpression(),tmp);
+ FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
+ fn.setNumLine(fan.getNumLine());
+ npe.getEnd().addNext(fn);
+ return new NodePair(npe.getBegin(),fn);
}
-
- private NodePair flattenLoopNode(LoopNode ln) {
- if (ln.getType()==LoopNode.FORLOOP) {
- NodePair initializer=flattenBlockNode(ln.getInitializer());
- 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);
- FlatNop nopend=new FlatNop();
-
- initializer.getEnd().addNext(condition.getBegin());
- body.getEnd().addNext(update.getBegin());
- update.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.WHILELOOP) {
- 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);
- FlatNop nopend=new FlatNop();
-
- 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", 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);
- FlatNop nopend=new FlatNop();
-
- body.getEnd().addNext(condition.getBegin());
- condition.getEnd().addNext(fcb);
- fcb.addFalseNext(nopend);
- fcb.addTrueNext(body.getBegin());
- return new NodePair(begin,nopend);
- } else throw new Error();
+ }
+
+ 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);
+ TempDescriptor arraytmp=out_temp;
+ if (aan.iswrapper()) {
+ //have wrapper
+ arraytmp=TempDescriptor.tempFactory("temp", aan.getExpression().getType().dereference());
}
-
- 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);
- }
+ FlatNode fn=new FlatElementNode(tmp,tmpindex,arraytmp);
+ fn.setNumLine(aan.getNumLine());
+ npe.getEnd().addNext(npi.getBegin());
+ npi.getEnd().addNext(fn);
+ if (aan.iswrapper()) {
+ FlatFieldNode ffn=new FlatFieldNode((FieldDescriptor)aan.getExpression().getType().dereference().getClassDesc().getFieldTable().get("value"),arraytmp,out_temp);
+ ffn.setNumLine(aan.getNumLine());
+ fn.addNext(ffn);
+ fn=ffn;
+ }
+ return new NodePair(npe.getBegin(),fn);
+ }
- FlatReturnNode rnflat=new FlatReturnNode(retval);
+ private NodePair flattenAssignmentNode(AssignmentNode an,TempDescriptor out_temp) {
+ // Three cases:
+ // left side is variable
+ // left side is field
+ // left side is array
- if (cond!=null) {
- cond.getEnd().addNext(rnflat);
- return new NodePair(cond.getBegin(),rnflat);
- } else
- return new NodePair(rnflat,rnflat);
-
+ 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);
}
-
- private NodePair flattenSubBlockNode(SubBlockNode sbn) {
- return flattenBlockNode(sbn.getBlockNode());
+ FlatNode first=null;
+ FlatNode last=null;
+ TempDescriptor src_tmp = src_tmp=an.getSrc()==null?TempDescriptor.tempFactory("srctmp",an.getDest().getType()):TempDescriptor.tempFactory("srctmp",an.getSrc().getType());
+
+ //Get src value
+ if (an.getSrc()!=null) {
+ if(an.getSrc().getEval() != null) {
+ FlatLiteralNode fln=new FlatLiteralNode(an.getSrc().getType(), an.getSrc().getEval().longValue(), src_tmp);
+ fln.setNumLine(an.getSrc().getNumLine());
+ first = last =fln;
+ } else {
+ 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);
+ fln.setNumLine(an.getNumLine());
+ first=fln;
+ last=fln;
}
- private NodePair flattenBlockStatementNode(BlockStatementNode bsn) {
- switch(bsn.kind()) {
- case Kind.BlockExpressionNode:
- return flattenBlockExpressionNode((BlockExpressionNode)bsn);
-
- case Kind.DeclarationNode:
- return flattenDeclarationNode((DeclarationNode)bsn);
-
- case Kind.IfStatementNode:
- return flattenIfStatementNode((IfStatementNode)bsn);
-
- case Kind.LoopNode:
- return flattenLoopNode((LoopNode)bsn);
-
- case Kind.ReturnNode:
- return flattenReturnNode((IR.Tree.ReturnNode)bsn);
+ if (an.getDest().kind()==Kind.FieldAccessNode) {
+ //We are assigning an object field
+
+ FieldAccessNode fan=(FieldAccessNode)an.getDest();
+ ExpressionNode en=fan.getExpression();
+ TempDescriptor dst_tmp=null;
+ NodePair np_baseexp=null;
+ if(en.getType().isClassNameRef()) {
+ // static field dereference with class name
+ dst_tmp = new TempDescriptor(en.getType().getClassDesc().getSymbol(), en.getType());
+ FlatNop nop=new FlatNop();
+ np_baseexp = new NodePair(nop,nop);
+ } else {
+ dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
+ 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);
+ ffn.setNumLine(an.getNumLine());
+ last.addNext(ffn);
+ last=ffn;
+
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src", new TypeDescriptor(stringcd));
+ MethodDescriptor valueOfmd=typeutil.getMethod(stringcd, "valueOf", new TypeDescriptor[] {new TypeDescriptor(objectcd)});
+ FlatCall fc1=new FlatCall(valueOfmd, src_tmp3, null, new TempDescriptor[] {src_tmp2});
+ fc1.setNumLine(an.getNumLine());
+
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, src_tmp3, new TempDescriptor[] {src_tmp});
+ fc.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ last.addNext(fc1);
+ fc1.addNext(fc);
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ fon.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+ FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
+ fsfn.setNumLine(en.getNumLine());
+ last.addNext(fsfn);
+ last=fsfn;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fon2.setNumLine(an.getNumLine());
+ 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());
+
+ if (aan.iswrapper()) {
+ TypeDescriptor arrayeltype=aan.getExpression().getType().dereference();
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src3",arrayeltype);
+ FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp3);
+ fen.setNumLine(aan.getNumLine());
+ FlatFieldNode ffn=new FlatFieldNode((FieldDescriptor)arrayeltype.getClassDesc().getFieldTable().get("value"),src_tmp3,src_tmp2);
+ ffn.setNumLine(aan.getNumLine());
+ last.addNext(fen);
+ fen.addNext(ffn);
+ last=ffn;
+ } else {
+ FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp2);
+ fen.setNumLine(aan.getNumLine());
+ last.addNext(fen);
+ last=fen;
+ }
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src", new TypeDescriptor(stringcd));
+ MethodDescriptor valueOfmd=typeutil.getMethod(stringcd, "valueOf", new TypeDescriptor[] {new TypeDescriptor(objectcd)});
+ FlatCall fc1=new FlatCall(valueOfmd, src_tmp3, null, new TempDescriptor[] {src_tmp2});
+ fc1.setNumLine(an.getNumLine());
+
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, src_tmp3, new TempDescriptor[] {src_tmp});
+ fc.setNumLine(an.getNumLine());
+
+ src_tmp=tmp;
+ last.addNext(fc1);
+ fc1.addNext(fc);
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ fon.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+ if (aan.iswrapper()) {
+ TypeDescriptor arrayeltype=aan.getExpression().getType().dereference();
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src3",arrayeltype);
+ FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp3);
+ fen.setNumLine(aan.getNumLine());
+ FlatSetFieldNode fsfn=new FlatSetFieldNode(src_tmp3,(FieldDescriptor)arrayeltype.getClassDesc().getFieldTable().get("value"),src_tmp);
+ fsfn.setNumLine(aan.getExpression().getNumLine());
+ last.addNext(fen);
+ fen.addNext(fsfn);
+ last=fsfn;
+ } else {
+ FlatSetElementNode fsen=new FlatSetElementNode(dst_tmp, index_tmp, src_tmp);
+ fsen.setNumLine(aan.getNumLine());
+ last.addNext(fsen);
+ last=fsen;
+ }
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fon2.setNumLine(an.getNumLine());
+ last.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=null;
+ NodePair np_baseexp=null;
+ if(en.getType().isClassNameRef()) {
+ // static field dereference with class name
+ dst_tmp = new TempDescriptor(en.getType().getClassDesc().getSymbol(), en.getType());
+ FlatNop nop=new FlatNop();
+ np_baseexp = new NodePair(nop,nop);
+ } else {
+ dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
+ 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);
+ ffn.setNumLine(an.getNumLine());
+ last.addNext(ffn);
+ last=ffn;
+
+
+ if (base.getOp()==Operation.ADD&&an.getDest().getType().isString()) {
+ ClassDescriptor stringcd=typeutil.getClass(TypeUtil.StringClass);
+ ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src", new TypeDescriptor(stringcd));
+ MethodDescriptor valueOfmd=typeutil.getMethod(stringcd, "valueOf", new TypeDescriptor[] {new TypeDescriptor(objectcd)});
+ FlatCall fc1=new FlatCall(valueOfmd, src_tmp3, null, new TempDescriptor[] {src_tmp2});
+ fc1.setNumLine(an.getNumLine());
- case Kind.SubBlockNode:
- return flattenSubBlockNode((SubBlockNode)bsn);
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, src_tmp3, new TempDescriptor[] {src_tmp});
+ fc.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ last.addNext(fc1);
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ fon.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+
+ FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
+ fsfn.setNumLine(en.getNumLine());
+ last.addNext(fsfn);
+ last=fsfn;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fon2.setNumLine(an.getNumLine());
+ 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());
+
+ TempDescriptor ftmp= null;
+ if((nn.getClassDesc() != null)) {
+ // this is a static field
+ ftmp = new TempDescriptor(nn.getClassDesc().getSymbol(), nn.getClassType());
+
+ } else {
+ ftmp=getTempforVar(nn.getVar());
+ }
+ FlatFieldNode ffn=new FlatFieldNode(nn.getField(), ftmp, src_tmp2);
+ ffn.setNumLine(an.getNumLine());
+
+ 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);
+ ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src", new TypeDescriptor(stringcd));
+ MethodDescriptor valueOfmd=typeutil.getMethod(stringcd, "valueOf", new TypeDescriptor[] {new TypeDescriptor(objectcd)});
+ FlatCall fc1=new FlatCall(valueOfmd, src_tmp3, null, new TempDescriptor[] {src_tmp2});
+ fc1.setNumLine(an.getNumLine());
+
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, src_tmp3, new TempDescriptor[] {src_tmp});
+ fc.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ last.addNext(fc1);
+ fc1.addNext(fc);
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ fon.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ last.addNext(fon);
+ last=fon;
+ }
+ }
+
+ FlatSetFieldNode fsfn=null;
+ if(nn.getClassDesc()!=null) {
+ // this is a static field access inside of a static block
+ fsfn=new FlatSetFieldNode(new TempDescriptor("sfsb", nn.getClassType()), nn.getField(), src_tmp);
+ fsfn.setNumLine(nn.getNumLine());
+ } else {
+ fsfn=new FlatSetFieldNode(getTempforVar(nn.getVar()), nn.getField(), src_tmp);
+ fsfn.setNumLine(nn.getNumLine());
+ }
+ 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));
+ fon2.setNumLine(an.getNumLine());
+ 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));
+ fon.setNumLine(an.getNumLine());
+ 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);
+ ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src", new TypeDescriptor(stringcd));
+ MethodDescriptor valueOfmd=typeutil.getMethod(stringcd, "valueOf", new TypeDescriptor[] {new TypeDescriptor(objectcd)});
+ FlatCall fc1=new FlatCall(valueOfmd, src_tmp3, null, new TempDescriptor[] {src_tmp2});
+ fc1.setNumLine(an.getNumLine());
+
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, tmp, src_tmp3, new TempDescriptor[] {src_tmp});
+ fc.setNumLine(an.getNumLine());
+ src_tmp=tmp;
+ fc1.addNext(fc);
+
+ if (first==null)
+ first=fc1;
+ else
+ last.addNext(fc1);
+ src_tmp=tmp;
+ last=fc;
+ } else {
+ FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
+ fon.setNumLine(an.getNumLine());
+ 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));
+ fon.setNumLine(an.getNumLine());
+
+ last.addNext(fon);
+ last=fon;
+ if (pre) {
+ FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
+ fon2.setNumLine(an.getNumLine());
+ fon.addNext(fon2);
+ last=fon2;
+ }
+ return new NodePair(first, last);
+ } //end of else
+ }
+ }
+
+ throw new Error();
+ }
+
+ 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= null;
+ if((nn.getClassDesc() != null)) {
+ // this is a static field
+ tmp = new TempDescriptor(nn.getClassDesc().getSymbol(), nn.getClassType());
+
+ } else {
+ tmp=getTempforVar(nn.getVar());
+ }
+ FlatFieldNode ffn=new FlatFieldNode(nn.getField(), tmp, out_temp);
+ ffn.setNumLine(nn.getNumLine());
+ addMapNode2FlatNodeSet(nn,ffn);
+ 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));
+ fon.setNumLine(nn.getNumLine());
+ addMapNode2FlatNodeSet(nn,fon);
+ 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);
+ fcb.setNumLine(on.getNumLine());
+ FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
+ fon1.setNumLine(on.getNumLine());
+ FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
+ fon2.setNumLine(on.getNumLine());
+ 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);
+ fcb.setNumLine(on.getNumLine());
+ FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
+ fon1.setNumLine(on.getNumLine());
+ FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
+ fon2.setNumLine(on.getNumLine());
+ 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);
+ ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
+ TempDescriptor src_tmp3=TempDescriptor.tempFactory("src", new TypeDescriptor(stringcd));
+ MethodDescriptor valueOfmd=typeutil.getMethod(stringcd, "valueOf", new TypeDescriptor[] {new TypeDescriptor(objectcd)});
+ FlatCall fc1=new FlatCall(valueOfmd, src_tmp3, null, new TempDescriptor[] {temp_left});
+ fc1.setNumLine(on.getNumLine());
+
+ MethodDescriptor concatmd=typeutil.getMethod(stringcd, "concat", new TypeDescriptor[] {new TypeDescriptor(stringcd)});
+ FlatCall fc=new FlatCall(concatmd, out_temp, src_tmp3, new TempDescriptor[] {temp_right});
+ fc.setNumLine(on.getNumLine());
+ left.getEnd().addNext(right.getBegin());
+ right.getEnd().addNext(fc1);
+ fc1.addNext(fc);
+ return new NodePair(left.getBegin(), fc);
+ }
+
+ FlatOpNode fon=new FlatOpNode(out_temp,temp_left,temp_right,op);
+ fon.setNumLine(on.getNumLine());
+ 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);
+
+ case Kind.OffsetNode:
+ return flattenOffsetNode((OffsetNode)en,out_temp);
+
+ case Kind.TertiaryNode:
+ return flattenTertiaryNode((TertiaryNode)en,out_temp);
+
+ case Kind.InstanceOfNode:
+ return flattenInstanceOfNode((InstanceOfNode)en,out_temp);
+
+ case Kind.ArrayInitializerNode:
+ return flattenArrayInitializerNode((ArrayInitializerNode)en,out_temp);
+ }
+ throw new Error();
+ }
+
+ private NodePair flattenDeclarationNode(DeclarationNode dn) {
+ 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);
+ ftd.setNumLine(dn.getNumLine());
+ 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) {
+ TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.BOOLEAN));
+ NodePair cond=flattenExpressionNode(isn.getCondition(),cond_temp);
+ FlatCondBranch fcb=new FlatCondBranch(cond_temp);
+ fcb.setNumLine(isn.getNumLine());
+ 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());
+ if (true_np.getEnd()!=null)
+ true_np.getEnd().addNext(nopend);
+ if (false_np.getEnd()!=null)
+ false_np.getEnd().addNext(nopend);
+ if (nopend.numPrev()==0)
+ return new NodePair(cond.getBegin(), null);
+
+ return new NodePair(cond.getBegin(), nopend);
+ }
+
+ private NodePair flattenSwitchStatementNode(SwitchStatementNode ssn) {
+ TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.INT));
+ NodePair cond=flattenExpressionNode(ssn.getCondition(),cond_temp);
+ NodePair sbody = flattenSwitchBodyNode(ssn.getSwitchBody(), cond_temp);
+
+ cond.getEnd().addNext(sbody.getBegin());
+
+ return new NodePair(cond.getBegin(), sbody.getEnd());
+ }
+
+ private NodePair flattenSwitchBodyNode(BlockNode bn, TempDescriptor cond_temp) {
+ FlatNode begin=null;
+ FlatNode end=null;
+ NodePair prev_true_branch = null;
+ NodePair prev_false_branch = null;
+ for(int i=0; i<bn.size(); i++) {
+ SwitchBlockNode sbn = (SwitchBlockNode)bn.get(i);
+ HashSet oldbs=breakset;
+ breakset=new HashSet();
+
+ NodePair body=flattenBlockNode(sbn.getSwitchBlockStatement());
+ Vector<SwitchLabelNode> slnv = sbn.getSwitchConditions();
+ FlatNode cond_begin = null;
+ NodePair prev_fnp = null;
+ for(int j = 0; j < slnv.size(); j++) {
+ SwitchLabelNode sln = slnv.elementAt(j);
+ NodePair left = null;
+ NodePair false_np = null;
+ if(sln.isDefault()) {
+ left = body;
+ } else {
+ TempDescriptor cond_tmp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
+ TempDescriptor temp_left=TempDescriptor.tempFactory("leftop", sln.getCondition().getType());
+ Operation op=new Operation(Operation.EQUAL);
+ left=flattenExpressionNode(sln.getCondition(), temp_left);
+ FlatOpNode fon=new FlatOpNode(cond_tmp, temp_left, cond_temp, op);
+ fon.setNumLine(sln.getNumLine());
+ left.getEnd().addNext(fon);
+
+ FlatCondBranch fcb=new FlatCondBranch(cond_tmp);
+ fcb.setNumLine(bn.getNumLine());
+ fcb.setTrueProb(State.TRUEPROB);
+
+ FlatNop nop=new FlatNop();
+ false_np=new NodePair(nop,nop);
+
+ fon.addNext(fcb);
+ fcb.addTrueNext(body.getBegin());
+ fcb.addFalseNext(false_np.getBegin());
+ }
+ if((prev_fnp != null) && (prev_fnp.getEnd() != null)) {
+ prev_fnp.getEnd().addNext(left.getBegin());
+ }
+ prev_fnp = false_np;
+
+ if (begin==null) {
+ begin = left.getBegin();
+ }
+ if(cond_begin == null) {
+ cond_begin = left.getBegin();
+ }
+ }
+ if((prev_false_branch != null) && (prev_false_branch.getEnd() != null)) {
+ prev_false_branch.getEnd().addNext(cond_begin);
+ }
+ prev_false_branch = prev_fnp;
+ if((prev_true_branch != null) && (prev_true_branch.getEnd() != null)) {
+ prev_true_branch.getEnd().addNext(body.getBegin());
+ }
+ prev_true_branch = body;
+ for(Iterator breakit=breakset.iterator(); breakit.hasNext(); ) {
+ FlatNode fn=(FlatNode)breakit.next();
+ breakit.remove();
+ if (end==null)
+ end=new FlatNop();
+ fn.addNext(end);
+ }
+ breakset=oldbs;
+ }
+ if((prev_true_branch != null) && (prev_true_branch.getEnd() != null)) {
+ if (end==null)
+ end=new FlatNop();
+ prev_true_branch.getEnd().addNext(end);
+ }
+ if((prev_false_branch != null) && (prev_false_branch.getEnd() != null)) {
+ if (end==null)
+ end=new FlatNop();
+ prev_false_branch.getEnd().addNext(end);
+ }
+ if(begin == null) {
+ end=begin=new FlatNop();
+ }
+ return new NodePair(begin,end);
+ }
+
+ private NodePair flattenLoopNode(LoopNode ln) {
+
+ HashSet oldbs=breakset;
+ HashSet oldcs=continueset;
+ breakset=new HashSet();
+ continueset=new HashSet();
+
+ if (ln.getType()==LoopNode.FORLOOP) {
+ NodePair initializer=flattenBlockNode(ln.getInitializer());
+ 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.setNumLine(ln.getNumLine());
+ fcb.setTrueProb(State.TRUEPROB);
+ fcb.setLoop();
+ FlatNop nopend=new FlatNop();
+ FlatBackEdge backedge=new FlatBackEdge();
+
+ FlatNop nop2=new FlatNop();
+ initializer.getEnd().addNext(nop2);
+ nop2.addNext(condition.getBegin());
+ if (body.getEnd()!=null)
+ body.getEnd().addNext(update.getBegin());
+ update.getEnd().addNext(backedge);
+ backedge.addNext(condition.getBegin());
+ condition.getEnd().addNext(fcb);
+ fcb.addFalseNext(nopend);
+ fcb.addTrueNext(body.getBegin());
+ for(Iterator contit=continueset.iterator(); contit.hasNext(); ) {
+ FlatNode fn=(FlatNode)contit.next();
+ contit.remove();
+ fn.addNext(update.getBegin());
+ }
+ for(Iterator breakit=breakset.iterator(); breakit.hasNext(); ) {
+ FlatNode fn=(FlatNode)breakit.next();
+ breakit.remove();
+ fn.addNext(nopend);
+ }
+ breakset=oldbs;
+ continueset=oldcs;
+ if(ln.getLabel()!=null){
+ state.fn2labelMap.put(condition.getBegin(), ln.getLabel());
+ }
+ return new NodePair(begin,nopend);
+ } else if (ln.getType()==LoopNode.WHILELOOP) {
+ 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.setNumLine(ln.getNumLine());
+ fcb.setTrueProb(State.TRUEPROB);
+ fcb.setLoop();
+ FlatNop nopend=new FlatNop();
+ FlatBackEdge backedge=new FlatBackEdge();
+
+ if (body.getEnd()!=null)
+ body.getEnd().addNext(backedge);
+ backedge.addNext(condition.getBegin());
+
+ condition.getEnd().addNext(fcb);
+ fcb.addFalseNext(nopend);
+ fcb.addTrueNext(body.getBegin());
+
+ for(Iterator contit=continueset.iterator(); contit.hasNext(); ) {
+ FlatNode fn=(FlatNode)contit.next();
+ contit.remove();
+ fn.addNext(backedge);
+ }
+ for(Iterator breakit=breakset.iterator(); breakit.hasNext(); ) {
+ FlatNode fn=(FlatNode)breakit.next();
+ breakit.remove();
+ fn.addNext(nopend);
+ }
+ breakset=oldbs;
+ continueset=oldcs;
+ if(ln.getLabel()!=null){
+ state.fn2labelMap.put(begin, ln.getLabel());
+ }
+ return new NodePair(begin,nopend);
+ } else if (ln.getType()==LoopNode.DOWHILELOOP) {
+ 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.setNumLine(ln.getNumLine());
+ fcb.setTrueProb(State.TRUEPROB);
+ fcb.setLoop();
+ FlatNop nopend=new FlatNop();
+ FlatBackEdge backedge=new FlatBackEdge();
+
+ if (body.getEnd()!=null)
+ body.getEnd().addNext(condition.getBegin());
+ condition.getEnd().addNext(fcb);
+ fcb.addFalseNext(nopend);
+ fcb.addTrueNext(backedge);
+ backedge.addNext(body.getBegin());
+
+ for(Iterator contit=continueset.iterator(); contit.hasNext(); ) {
+ FlatNode fn=(FlatNode)contit.next();
+ contit.remove();
+ fn.addNext(condition.getBegin());
+ }
+ for(Iterator breakit=breakset.iterator(); breakit.hasNext(); ) {
+ FlatNode fn=(FlatNode)breakit.next();
+ breakit.remove();
+ fn.addNext(nopend);
+ }
+ breakset=oldbs;
+ continueset=oldcs;
+ if(ln.getLabel()!=null){
+ state.fn2labelMap.put(begin, ln.getLabel());
+ }
+ return new NodePair(begin,nopend);
+ } else 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);
+ rnflat.setNumLine(rntree.getNumLine());
+ rnflat.addNext(fe);
+ FlatNode ln=rnflat;
+ if ((state.THREAD||state.MGC)&&!this.lockStack.isEmpty()) {
+ if (state.JNI) {
+ //XXXXXXXXX: FIX THIS
+ } else {
+ FlatNode end = null;
+ MethodDescriptor memdex=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
+ for(int j = this.lockStack.size(); j > 0; j--) {
+ TempDescriptor thistd = this.lockStack.elementAt(j-1);
+ FlatCall fcunlock = new FlatCall(memdex, null, thistd, new TempDescriptor[0]);
+ fcunlock.setNumLine(rntree.getNumLine());
+ if(end != null) {
+ end.addNext(fcunlock);
+ }
+ end = fcunlock;
}
- throw new Error();
+ end.addNext(ln);
+ ln=end;
+ }
+ }
+ 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(),null);
+ } else
+ return new NodePair(ln,null);
+ }
+
+ private NodePair flattenTaskExitNode(TaskExitNode ten) {
+ FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.TASKEXIT);
+ ffan.setTaskExitIndex(ten.getTaskExitIndex());
+ updateFlagActionNode(ffan, ten.getFlagEffects());
+ NodePair fcn=flattenConstraintCheck(ten.getChecks());
+ ffan.addNext(fcn.getBegin());
+ FlatReturnNode rnflat=new FlatReturnNode(null);
+ rnflat.setNumLine(ten.getNumLine());
+ rnflat.addNext(fe);
+ fcn.getEnd().addNext(rnflat);
+ return new NodePair(ffan, null);
+ }
+
+ 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 flattenSynchronizedNode(SynchronizedNode sbn) {
+ TempDescriptor montmp=null;
+ FlatNode first = null;
+ FlatNode end = null;
+ if(sbn.getExpr() instanceof ClassTypeNode) {
+ montmp=new TempDescriptor("classobj", ((ClassTypeNode)sbn.getExpr()).getType().getClassDesc());
+ } else {
+ montmp = TempDescriptor.tempFactory("monitor",sbn.getExpr().getType());
+ NodePair npexp=flattenExpressionNode(sbn.getExpr(), montmp);
+ first = npexp.getBegin();
+ end = npexp.getEnd();
+ }
+ this.lockStack.push(montmp);
+ NodePair npblock=flattenBlockNode(sbn.getBlockNode());
+ if (state.JNI) {
+ this.lockStack.pop();
+ return npblock;
+ } else {
+ MethodDescriptor menmd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorEnter");
+ FlatCall fcen=new FlatCall(menmd, null, montmp, new TempDescriptor[0]);
+ fcen.setNumLine(sbn.getNumLine());
+
+ MethodDescriptor mexmd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
+ FlatCall fcex=new FlatCall(mexmd, null, montmp, new TempDescriptor[0]);
+ fcex.setNumLine(sbn.getNumLine());
+
+ this.lockStack.pop();
+
+ if(first != null) {
+ end.addNext(fcen);
+ } else {
+ first = fcen;
+ }
+ fcen.addNext(npblock.getBegin());
+
+ if (npblock.getEnd()!=null&&npblock.getEnd().kind()!=FKind.FlatReturnNode) {
+ npblock.getEnd().addNext(fcex);
+ return new NodePair(first, fcex);
+ } else {
+ return new NodePair(first, null);
+ }
+ }
+ }
+
+ private NodePair flattenAtomicNode(AtomicNode sbn) {
+ NodePair np=flattenBlockNode(sbn.getBlockNode());
+ FlatAtomicEnterNode faen=new FlatAtomicEnterNode();
+ faen.setNumLine(sbn.getNumLine());
+ FlatAtomicExitNode faexn=new FlatAtomicExitNode(faen);
+ faen.addNext(np.getBegin());
+ np.getEnd().addNext(faexn);
+ return new NodePair(faen, faexn);
+ }
+
+ private NodePair flattenGenReachNode(GenReachNode grn) {
+ FlatGenReachNode fgrn = new FlatGenReachNode(grn.getGraphName() );
+ return new NodePair(fgrn, fgrn);
+ }
+
+ private NodePair flattenSESENode(SESENode sn) {
+ if( sn.isStart() ) {
+ FlatSESEEnterNode fsen=new FlatSESEEnterNode(sn);
+ fsen.setNumLine(sn.getNumLine());
+ sn.setFlatEnter(fsen);
+ return new NodePair(fsen, fsen);
+ }
+
+ FlatSESEExitNode fsexn=new FlatSESEExitNode(sn);
+ sn.setFlatExit(fsexn);
+ FlatSESEEnterNode fsen=sn.getStart().getFlatEnter();
+ fsexn.setFlatEnter(fsen);
+ sn.getStart().getFlatEnter().setFlatExit(fsexn);
+
+ return new NodePair(fsexn, fsexn);
+ }
+
+ private NodePair flattenContinueBreakNode(ContinueBreakNode cbn) {
+ FlatNop fn=new FlatNop();
+ if (cbn.isBreak())
+ breakset.add(fn);
+ else
+ continueset.add(fn);
+ return new NodePair(fn,null);
+ }
+
+ private NodePair flattenInstanceOfNode(InstanceOfNode tn, TempDescriptor out_temp) {
+ TempDescriptor expr_temp=TempDescriptor.tempFactory("expr",tn.getExpr().getType());
+ NodePair cond=flattenExpressionNode(tn.getExpr(), expr_temp);
+ FlatInstanceOfNode fion=new FlatInstanceOfNode(tn.getExprType(), expr_temp, out_temp);
+ fion.setNumLine(tn.getNumLine());
+ cond.getEnd().addNext(fion);
+ return new NodePair(cond.getBegin(),fion);
+ }
+
+ private NodePair flattenArrayInitializerNode(ArrayInitializerNode ain, TempDescriptor out_temp) {
+ boolean isGlobal = false;
+ String disjointId = null;
+ // get the type the array to be initialized
+ TypeDescriptor td = ain.getType();
+
+ // create a new array of size equal to the array initializer
+ FlatNode first=null;
+ FlatNode last=null;
+ TempDescriptor tmp=TempDescriptor.tempFactory("arg", new TypeDescriptor(TypeDescriptor.INT));
+ FlatLiteralNode fln_tmp=new FlatLiteralNode(tmp.getType(), new Integer(ain.numVarInitializers()), tmp);
+ fln_tmp.setNumLine(ain.getNumLine());
+ first = last=fln_tmp;
+
+ // create the new array
+ FlatNew fn=new FlatNew(td, out_temp, tmp, isGlobal, disjointId);
+ last.addNext(fn);
+ last = fn;
+
+ // initialize the new array
+ for(int i = 0; i < ain.numVarInitializers(); i++) {
+ ExpressionNode var_init_node = ain.getVarInitializer(i);
+ TempDescriptor tmp_toinit = out_temp;
+ TempDescriptor tmp_init=TempDescriptor.tempFactory("array_init", td.dereference());
+ // index=i
+ TempDescriptor index=TempDescriptor.tempFactory("index", new TypeDescriptor(TypeDescriptor.INT));
+ FlatLiteralNode fln=new FlatLiteralNode(index.getType(), new Integer(i), index);
+ fln.setNumLine(ain.getNumLine());
+ // calculate the initial value
+ NodePair np_init = flattenExpressionNode(var_init_node, tmp_init);
+ // TODO wrapper class process is missing now
+ /*if(td.isArray() && td.dereference().iswrapper()) {
+ }*/
+ FlatSetElementNode fsen=new FlatSetElementNode(tmp_toinit, index, tmp_init);
+ fsen.setNumLine(ain.getNumLine());
+ last.addNext(fln);
+ fln.addNext(np_init.getBegin());
+ np_init.getEnd().addNext(fsen);
+ last = fsen;
+ }
+
+ return new NodePair(first, last);
+ }
+
+ private NodePair flattenTertiaryNode(TertiaryNode tn, TempDescriptor out_temp) {
+ TempDescriptor cond_temp=TempDescriptor.tempFactory("tert_cond",new TypeDescriptor(TypeDescriptor.BOOLEAN));
+ TempDescriptor true_temp=TempDescriptor.tempFactory("tert_true",tn.getTrueExpr().getType());
+ TempDescriptor fals_temp=TempDescriptor.tempFactory("tert_fals",tn.getFalseExpr().getType());
+
+ NodePair cond=flattenExpressionNode(tn.getCond(),cond_temp);
+ FlatCondBranch fcb=new FlatCondBranch(cond_temp);
+ fcb.setNumLine(tn.getNumLine());
+
+ NodePair trueExpr=flattenExpressionNode(tn.getTrueExpr(),true_temp);
+ FlatOpNode fonT=new FlatOpNode(out_temp, true_temp, null, new Operation(Operation.ASSIGN));
+ fonT.setNumLine(tn.getNumLine());
+
+ NodePair falseExpr=flattenExpressionNode(tn.getFalseExpr(),fals_temp);
+ FlatOpNode fonF=new FlatOpNode(out_temp, fals_temp, null, new Operation(Operation.ASSIGN));
+ fonF.setNumLine(tn.getNumLine());
+
+ FlatNop nopend=new FlatNop();
+
+ cond.getEnd().addNext(fcb);
+
+ fcb.addTrueNext(trueExpr.getBegin());
+ fcb.addFalseNext(falseExpr.getBegin());
+
+ trueExpr.getEnd().addNext(fonT);
+ fonT.addNext(nopend);
+
+ falseExpr.getEnd().addNext(fonF);
+ fonF.addNext(nopend);
+
+ return new NodePair(cond.getBegin(), nopend);
+ }
+
+ private NodePair flattenBlockStatementNode(BlockStatementNode bsn) {
+ switch(bsn.kind()) {
+ case Kind.BlockExpressionNode:
+ return flattenBlockExpressionNode((BlockExpressionNode)bsn);
+
+ case Kind.DeclarationNode:
+ return flattenDeclarationNode((DeclarationNode)bsn);
+
+ case Kind.TagDeclarationNode:
+ return flattenTagDeclarationNode((TagDeclarationNode)bsn);
+
+ case Kind.IfStatementNode:
+ return flattenIfStatementNode((IfStatementNode)bsn);
+
+ case Kind.SwitchStatementNode:
+ return flattenSwitchStatementNode((SwitchStatementNode)bsn);
+
+ case Kind.LoopNode:
+ return flattenLoopNode((LoopNode)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);
+
+ case Kind.SynchronizedNode:
+ return flattenSynchronizedNode((SynchronizedNode)bsn);
+
+ case Kind.SESENode:
+ return flattenSESENode((SESENode)bsn);
+
+ case Kind.GenReachNode:
+ return flattenGenReachNode((GenReachNode)bsn);
+
+ case Kind.ContinueBreakNode:
+ return flattenContinueBreakNode((ContinueBreakNode)bsn);
+ }
+ throw new Error();
+ }
+
+ private void addMapNode2FlatNodeSet(TreeNode tn, FlatNode fn){
+ Set<FlatNode> fnSet=mapNode2FlatNodeSet.get(tn);
+ if(fnSet==null){
+ fnSet=new HashSet<FlatNode>();
+ mapNode2FlatNodeSet.put(tn, fnSet);
}
+ fnSet.add(fn);
+ }
+
+ public Set<FlatNode> getFlatNodeSet(TreeNode tn){
+ // WARNING: ONLY DID FOR NAMENODE NOW!
+ assert(tn instanceof NameNode);
+ return mapNode2FlatNodeSet.get(tn);
+ }
+
}
projects / IRC.git / blobdiff