6 public class SemanticCheck {
10 public SemanticCheck(State state, TypeUtil tu) {
15 public void semanticCheck() {
16 SymbolTable classtable=state.getClassSymbolTable();
17 Iterator it=classtable.getDescriptorsIterator();
18 // Do descriptors first
20 ClassDescriptor cd=(ClassDescriptor)it.next();
21 System.out.println("Checking class: "+cd);
22 //Set superclass link up
23 if (cd.getSuper()!=null) {
24 cd.setSuper(typeutil.getClass(cd.getSuper()));
25 // Link together Field, Method, and Flag tables so classes
26 // inherit these from their superclasses
27 cd.getFieldTable().setParent(cd.getSuperDesc().getFieldTable());
28 cd.getMethodTable().setParent(cd.getSuperDesc().getMethodTable());
29 cd.getFlagTable().setParent(cd.getSuperDesc().getFlagTable());
32 /* Check to see that fields are well typed */
33 for(Iterator field_it=cd.getFields();field_it.hasNext();) {
34 FieldDescriptor fd=(FieldDescriptor)field_it.next();
35 System.out.println("Checking field: "+fd);
39 for(Iterator method_it=cd.getMethods();method_it.hasNext();) {
40 MethodDescriptor md=(MethodDescriptor)method_it.next();
45 it=classtable.getDescriptorsIterator();
46 // Do descriptors first
48 ClassDescriptor cd=(ClassDescriptor)it.next();
49 for(Iterator method_it=cd.getMethods();method_it.hasNext();) {
50 MethodDescriptor md=(MethodDescriptor)method_it.next();
51 checkMethodBody(cd,md);
55 for(Iterator task_it=state.getTaskSymbolTable().getDescriptorsIterator();task_it.hasNext();) {
56 TaskDescriptor td=(TaskDescriptor)task_it.next();
63 public void checkTypeDescriptor(TypeDescriptor td) {
67 String name=td.toString();
68 ClassDescriptor field_cd=(ClassDescriptor)state.getClassSymbolTable().get(name);
70 throw new Error("Undefined class "+name);
71 td.setClassDescriptor(field_cd);
77 public void checkField(ClassDescriptor cd, FieldDescriptor fd) {
78 checkTypeDescriptor(fd.getType());
81 public void checkFlagEffects(TaskDescriptor td, Vector vfe) {
82 for(int i=0;i<vfe.size();i++) {
83 FlagEffects fe=(FlagEffects) vfe.get(i);
84 String varname=fe.getName();
85 //Make sure the variable is declared as a parameter to the task
86 VarDescriptor vd=(VarDescriptor)td.getParameterTable().get(varname);
88 throw new Error("Parameter "+varname+" in Flag Effects not declared");
91 //Make sure it correspods to a class
92 TypeDescriptor type_d=vd.getType();
93 if (!type_d.isClass())
94 throw new Error("Cannot have non-object argument for flag_effect");
96 ClassDescriptor cd=type_d.getClassDesc();
97 for(int j=0;j<fe.numEffects();j++) {
98 FlagEffect flag=fe.getEffect(j);
99 String name=flag.getName();
100 FlagDescriptor flag_d=(FlagDescriptor)cd.getFlagTable().get(name);
101 //Make sure the flag is declared
103 throw new Error("Flag descriptor "+name+" undefined in class: "+cd.getSymbol());
104 flag.setFlag(flag_d);
109 public void checkTask(TaskDescriptor td) {
110 for(int i=0;i<td.numParameters();i++) {
111 /* Check that parameter is well typed */
112 TypeDescriptor param_type=td.getParamType(i);
113 checkTypeDescriptor(param_type);
115 /* Check the parameter's flag expression is well formed */
116 FlagExpressionNode fen=td.getFlag(td.getParameter(i));
117 if (!param_type.isClass())
118 throw new Error("Cannot have non-object argument to a task");
119 ClassDescriptor cd=param_type.getClassDesc();
120 checkFlagExpressionNode(cd, fen);
121 checkFlagEffects(td, td.getFlagEffects());
123 /* Check that the task code is valid */
124 BlockNode bn=state.getMethodBody(td);
125 checkBlockNode(td, td.getParameterTable(),bn);
129 public void checkFlagExpressionNode(ClassDescriptor cd, FlagExpressionNode fen) {
131 case Kind.FlagOpNode:
133 FlagOpNode fon=(FlagOpNode)fen;
134 checkFlagExpressionNode(cd, fon.getLeft());
135 if (fon.getRight()!=null)
136 checkFlagExpressionNode(cd, fon.getRight());
141 FlagNode fn=(FlagNode)fen;
142 String name=fn.getFlagName();
143 FlagDescriptor fd=(FlagDescriptor)cd.getFlagTable().get(name);
145 throw new Error("Undeclared flag: "+name);
150 throw new Error("Unrecognized FlagExpressionNode");
154 public void checkMethod(ClassDescriptor cd, MethodDescriptor md) {
155 /* Check return type */
156 if (!md.isConstructor())
157 if (!md.getReturnType().isVoid())
158 checkTypeDescriptor(md.getReturnType());
160 for(int i=0;i<md.numParameters();i++) {
161 TypeDescriptor param_type=md.getParamType(i);
162 checkTypeDescriptor(param_type);
164 /* Link the naming environments */
165 if (!md.isStatic()) /* Fields aren't accessible directly in a static method, so don't link in this table */
166 md.getParameterTable().setParent(cd.getFieldTable());
168 if (!md.isStatic()) {
169 VarDescriptor thisvd=new VarDescriptor(new TypeDescriptor(cd),"this");
174 public void checkMethodBody(ClassDescriptor cd, MethodDescriptor md) {
175 System.out.println("Processing method:"+md);
176 BlockNode bn=state.getMethodBody(md);
177 checkBlockNode(md, md.getParameterTable(),bn);
180 public void checkBlockNode(MethodDescriptor md, SymbolTable nametable, BlockNode bn) {
181 /* Link in the naming environment */
182 bn.getVarTable().setParent(nametable);
183 for(int i=0;i<bn.size();i++) {
184 BlockStatementNode bsn=bn.get(i);
185 checkBlockStatementNode(md, bn.getVarTable(),bsn);
189 public void checkBlockStatementNode(MethodDescriptor md, SymbolTable nametable, BlockStatementNode bsn) {
191 case Kind.BlockExpressionNode:
192 checkBlockExpressionNode(md, nametable,(BlockExpressionNode)bsn);
195 case Kind.DeclarationNode:
196 checkDeclarationNode(md, nametable, (DeclarationNode)bsn);
199 case Kind.IfStatementNode:
200 checkIfStatementNode(md, nametable, (IfStatementNode)bsn);
204 checkLoopNode(md, nametable, (LoopNode)bsn);
207 case Kind.ReturnNode:
208 checkReturnNode(md, nametable, (ReturnNode)bsn);
211 case Kind.TaskExitNode:
212 checkTaskExitNode(md, nametable, (TaskExitNode)bsn);
215 case Kind.SubBlockNode:
216 checkSubBlockNode(md, nametable, (SubBlockNode)bsn);
222 void checkBlockExpressionNode(MethodDescriptor md, SymbolTable nametable, BlockExpressionNode ben) {
223 checkExpressionNode(md, nametable, ben.getExpression(), null);
226 void checkDeclarationNode(MethodDescriptor md, SymbolTable nametable, DeclarationNode dn) {
227 VarDescriptor vd=dn.getVarDescriptor();
228 checkTypeDescriptor(vd.getType());
229 Descriptor d=nametable.get(vd.getSymbol());
231 (d instanceof FieldDescriptor)) {
234 throw new Error(vd.getSymbol()+" defined a second time");
235 if (dn.getExpression()!=null)
236 checkExpressionNode(md, nametable, dn.getExpression(), vd.getType());
239 void checkSubBlockNode(MethodDescriptor md, SymbolTable nametable, SubBlockNode sbn) {
240 checkBlockNode(md, nametable, sbn.getBlockNode());
243 void checkReturnNode(MethodDescriptor md, SymbolTable nametable, ReturnNode rn) {
244 if (md instanceof TaskDescriptor)
245 throw new Error("Illegal return appears in Task: "+md.getSymbol());
246 if (rn.getReturnExpression()!=null)
247 checkExpressionNode(md, nametable, rn.getReturnExpression(), md.getReturnType());
249 if (md.getReturnType()!=null&&!md.getReturnType().isVoid())
250 throw new Error("Need to return something for "+md);
253 void checkTaskExitNode(MethodDescriptor md, SymbolTable nametable, TaskExitNode ten) {
254 if (!(md instanceof TaskDescriptor))
255 throw new Error("Illegal taskexit appears in Method: "+md.getSymbol());
256 checkFlagEffects((TaskDescriptor)md, ten.getFlagEffects());
259 void checkIfStatementNode(MethodDescriptor md, SymbolTable nametable, IfStatementNode isn) {
260 checkExpressionNode(md, nametable, isn.getCondition(), new TypeDescriptor(TypeDescriptor.BOOLEAN));
261 checkBlockNode(md, nametable, isn.getTrueBlock());
262 if (isn.getFalseBlock()!=null)
263 checkBlockNode(md, nametable, isn.getFalseBlock());
266 void checkExpressionNode(MethodDescriptor md, SymbolTable nametable, ExpressionNode en, TypeDescriptor td) {
268 case Kind.AssignmentNode:
269 checkAssignmentNode(md,nametable,(AssignmentNode)en,td);
272 checkCastNode(md,nametable,(CastNode)en,td);
274 case Kind.CreateObjectNode:
275 checkCreateObjectNode(md,nametable,(CreateObjectNode)en,td);
277 case Kind.FieldAccessNode:
278 checkFieldAccessNode(md,nametable,(FieldAccessNode)en,td);
280 case Kind.ArrayAccessNode:
281 checkArrayAccessNode(md,nametable,(ArrayAccessNode)en,td);
283 case Kind.LiteralNode:
284 checkLiteralNode(md,nametable,(LiteralNode)en,td);
286 case Kind.MethodInvokeNode:
287 checkMethodInvokeNode(md,nametable,(MethodInvokeNode)en,td);
290 checkNameNode(md,nametable,(NameNode)en,td);
293 checkOpNode(md,nametable,(OpNode)en,td);
299 void checkCastNode(MethodDescriptor md, SymbolTable nametable, CastNode cn, TypeDescriptor td) {
300 /* Get type descriptor */
301 if (cn.getType()==null) {
302 NameDescriptor typenamed=cn.getTypeName().getName();
303 String typename=typenamed.toString();
304 TypeDescriptor ntd=new TypeDescriptor(typeutil.getClass(typename));
308 /* Check the type descriptor */
309 TypeDescriptor cast_type=cn.getType();
310 checkTypeDescriptor(cast_type);
314 if (!typeutil.isSuperorType(td,cast_type))
315 throw new Error("Cast node returns "+cast_type+", but need "+td);
318 ExpressionNode en=cn.getExpression();
319 checkExpressionNode(md, nametable, en, null);
320 TypeDescriptor etd=en.getType();
321 if (typeutil.isSuperorType(cast_type,etd)) /* Cast trivially succeeds */
324 if (typeutil.isSuperorType(etd,cast_type)) /* Cast may succeed */
327 /* Different branches */
328 /* TODO: change if add interfaces */
329 throw new Error("Cast will always fail\n"+cn.printNode(0));
332 void checkFieldAccessNode(MethodDescriptor md, SymbolTable nametable, FieldAccessNode fan, TypeDescriptor td) {
333 ExpressionNode left=fan.getExpression();
334 checkExpressionNode(md,nametable,left,null);
335 TypeDescriptor ltd=left.getType();
336 String fieldname=fan.getFieldName();
338 FieldDescriptor fd=null;
339 if (ltd.isArray()&&fieldname.equals("length"))
340 fd=FieldDescriptor.arrayLength;
342 fd=(FieldDescriptor) ltd.getClassDesc().getFieldTable().get(fieldname);
344 throw new Error("Unknown field "+fieldname);
347 if (!typeutil.isSuperorType(td,fan.getType()))
348 throw new Error("Field node returns "+fan.getType()+", but need "+td);
351 void checkArrayAccessNode(MethodDescriptor md, SymbolTable nametable, ArrayAccessNode aan, TypeDescriptor td) {
352 ExpressionNode left=aan.getExpression();
353 checkExpressionNode(md,nametable,left,null);
355 checkExpressionNode(md,nametable,aan.getIndex(),new TypeDescriptor(TypeDescriptor.INT));
356 TypeDescriptor ltd=left.getType();
359 if (!typeutil.isSuperorType(td,aan.getType()))
360 throw new Error("Field node returns "+aan.getType()+", but need "+td);
363 void checkLiteralNode(MethodDescriptor md, SymbolTable nametable, LiteralNode ln, TypeDescriptor td) {
364 /* Resolve the type */
365 Object o=ln.getValue();
366 if (ln.getTypeString().equals("null")) {
367 ln.setType(new TypeDescriptor(TypeDescriptor.NULL));
368 } else if (o instanceof Integer) {
369 ln.setType(new TypeDescriptor(TypeDescriptor.INT));
370 } else if (o instanceof Long) {
371 ln.setType(new TypeDescriptor(TypeDescriptor.LONG));
372 } else if (o instanceof Float) {
373 ln.setType(new TypeDescriptor(TypeDescriptor.FLOAT));
374 } else if (o instanceof Boolean) {
375 ln.setType(new TypeDescriptor(TypeDescriptor.BOOLEAN));
376 } else if (o instanceof Double) {
377 ln.setType(new TypeDescriptor(TypeDescriptor.DOUBLE));
378 } else if (o instanceof Character) {
379 ln.setType(new TypeDescriptor(TypeDescriptor.CHAR));
380 } else if (o instanceof String) {
381 ln.setType(new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass)));
385 if (!typeutil.isSuperorType(td,ln.getType()))
386 throw new Error("Field node returns "+ln.getType()+", but need "+td);
389 void checkNameNode(MethodDescriptor md, SymbolTable nametable, NameNode nn, TypeDescriptor td) {
390 NameDescriptor nd=nn.getName();
391 if (nd.getBase()!=null) {
393 /* Rewrite NameNode */
394 ExpressionNode en=translateNameDescriptorintoExpression(nd);
395 nn.setExpression(en);
396 checkExpressionNode(md,nametable,en,td);
398 String varname=nd.toString();
399 Descriptor d=(Descriptor)nametable.get(varname);
401 throw new Error("Name "+varname+" undefined");
403 if (d instanceof VarDescriptor) {
404 nn.setVar((VarDescriptor)d);
405 } else if (d instanceof FieldDescriptor) {
406 nn.setField((FieldDescriptor)d);
407 nn.setVar((VarDescriptor)nametable.get("this")); /* Need a pointer to this */
410 if (!typeutil.isSuperorType(td,nn.getType()))
411 throw new Error("Field node returns "+nn.getType()+", but need "+td);
415 void checkAssignmentNode(MethodDescriptor md, SymbolTable nametable, AssignmentNode an, TypeDescriptor td) {
416 checkExpressionNode(md, nametable, an.getSrc() ,td);
417 //TODO: Need check on validity of operation here
418 if (!((an.getDest() instanceof FieldAccessNode)||
419 (an.getDest() instanceof ArrayAccessNode)||
420 (an.getDest() instanceof NameNode)))
421 throw new Error("Bad lside in "+an.printNode(0));
422 checkExpressionNode(md, nametable, an.getDest(), null);
423 if (!typeutil.isSuperorType(an.getDest().getType(),an.getSrc().getType())) {
424 throw new Error("Type of rside ("+an.getSrc().getType()+") not compatible with type of lside ("+an.getDest().getType()+")"+an.printNode(0));
428 void checkLoopNode(MethodDescriptor md, SymbolTable nametable, LoopNode ln) {
429 if (ln.getType()==LoopNode.WHILELOOP||ln.getType()==LoopNode.DOWHILELOOP) {
430 checkExpressionNode(md, nametable, ln.getCondition(), new TypeDescriptor(TypeDescriptor.BOOLEAN));
431 checkBlockNode(md, nametable, ln.getBody());
434 /* Link in the initializer naming environment */
435 BlockNode bn=ln.getInitializer();
436 bn.getVarTable().setParent(nametable);
437 for(int i=0;i<bn.size();i++) {
438 BlockStatementNode bsn=bn.get(i);
439 checkBlockStatementNode(md, bn.getVarTable(),bsn);
441 //check the condition
442 checkExpressionNode(md, bn.getVarTable(), ln.getCondition(), new TypeDescriptor(TypeDescriptor.BOOLEAN));
443 checkBlockNode(md, bn.getVarTable(), ln.getBody());
444 checkBlockNode(md, bn.getVarTable(), ln.getUpdate());
449 void checkCreateObjectNode(MethodDescriptor md, SymbolTable nametable, CreateObjectNode con, TypeDescriptor td) {
450 TypeDescriptor[] tdarray=new TypeDescriptor[con.numArgs()];
451 for(int i=0;i<con.numArgs();i++) {
452 ExpressionNode en=con.getArg(i);
453 checkExpressionNode(md,nametable,en,null);
454 tdarray[i]=en.getType();
457 TypeDescriptor typetolookin=con.getType();
458 checkTypeDescriptor(typetolookin);
459 if ((!typetolookin.isClass())&&(!typetolookin.isArray()))
460 throw new Error("Can't allocate primitive type:"+con.printNode(0));
462 if (!typetolookin.isArray()) {
463 //Array's don't need constructor calls
464 ClassDescriptor classtolookin=typetolookin.getClassDesc();
465 System.out.println("Looking for "+typetolookin.getSymbol());
466 System.out.println(classtolookin.getMethodTable());
468 Set methoddescriptorset=classtolookin.getMethodTable().getSet(typetolookin.getSymbol());
469 MethodDescriptor bestmd=null;
471 for(Iterator methodit=methoddescriptorset.iterator();methodit.hasNext();) {
472 MethodDescriptor currmd=(MethodDescriptor)methodit.next();
473 /* Need correct number of parameters */
474 System.out.println("Examining: "+currmd);
475 if (con.numArgs()!=currmd.numParameters())
477 for(int i=0;i<con.numArgs();i++) {
478 if (!typeutil.isSuperorType(currmd.getParamType(i),tdarray[i]))
481 /* Method okay so far */
485 if (isMoreSpecific(currmd,bestmd)) {
487 } else if (!isMoreSpecific(bestmd, currmd))
488 throw new Error("No method is most specific");
490 /* Is this more specific than bestmd */
494 throw new Error("No method found for "+con.printNode(0));
495 con.setConstructor(bestmd);
500 /** Check to see if md1 is more specific than md2... Informally
501 if md2 could always be called given the arguments passed into
504 boolean isMoreSpecific(MethodDescriptor md1, MethodDescriptor md2) {
505 /* Checks if md1 is more specific than md2 */
506 if (md1.numParameters()!=md2.numParameters())
508 for(int i=0;i<md1.numParameters();i++) {
509 if (!typeutil.isSuperorType(md2.getParamType(i), md1.getParamType(i)))
512 if (!typeutil.isSuperorType(md2.getReturnType(), md1.getReturnType()))
517 ExpressionNode translateNameDescriptorintoExpression(NameDescriptor nd) {
518 String id=nd.getIdentifier();
519 NameDescriptor base=nd.getBase();
521 return new NameNode(nd);
523 return new FieldAccessNode(translateNameDescriptorintoExpression(base),id);
527 void checkMethodInvokeNode(MethodDescriptor md, SymbolTable nametable, MethodInvokeNode min, TypeDescriptor td) {
528 /*Typecheck subexpressions
529 and get types for expressions*/
531 TypeDescriptor[] tdarray=new TypeDescriptor[min.numArgs()];
532 for(int i=0;i<min.numArgs();i++) {
533 ExpressionNode en=min.getArg(i);
534 checkExpressionNode(md,nametable,en,null);
535 tdarray[i]=en.getType();
537 TypeDescriptor typetolookin=null;
538 if (min.getExpression()!=null) {
539 checkExpressionNode(md,nametable,min.getExpression(),null);
540 typetolookin=min.getExpression().getType();
541 } else if (min.getBaseName()!=null) {
542 String rootname=min.getBaseName().getRoot();
543 if (nametable.get(rootname)!=null) {
544 //we have an expression
545 min.setExpression(translateNameDescriptorintoExpression(min.getBaseName()));
546 checkExpressionNode(md, nametable, min.getExpression(), null);
547 typetolookin=min.getExpression().getType();
550 ClassDescriptor cd=typeutil.getClass(min.getBaseName().getSymbol());
552 throw new Error(min.getBaseName()+" undefined");
553 typetolookin=new TypeDescriptor(cd);
555 } else if (!(md instanceof TaskDescriptor)) {
556 typetolookin=new TypeDescriptor(md.getClassDesc());
558 /* If this a task descriptor we throw an error at this point */
559 throw new Error("Unknown method call to "+min.getMethodName()+"in task"+md.getSymbol());
561 if (!typetolookin.isClass())
563 ClassDescriptor classtolookin=typetolookin.getClassDesc();
564 System.out.println("Method name="+min.getMethodName());
565 Set methoddescriptorset=classtolookin.getMethodTable().getSet(min.getMethodName());
566 MethodDescriptor bestmd=null;
568 for(Iterator methodit=methoddescriptorset.iterator();methodit.hasNext();) {
569 MethodDescriptor currmd=(MethodDescriptor)methodit.next();
570 /* Need correct number of parameters */
571 if (min.numArgs()!=currmd.numParameters())
573 for(int i=0;i<min.numArgs();i++) {
574 if (!typeutil.isSuperorType(currmd.getParamType(i),tdarray[i]))
577 /* Method okay so far */
581 if (isMoreSpecific(currmd,bestmd)) {
583 } else if (!isMoreSpecific(bestmd, currmd))
584 throw new Error("No method is most specific");
586 /* Is this more specific than bestmd */
590 throw new Error("No method found for :"+min.printNode(0));
591 min.setMethod(bestmd);
592 /* Check whether we need to set this parameter to implied this */
593 if (!bestmd.isStatic()) {
594 if (min.getExpression()==null) {
595 ExpressionNode en=new NameNode(new NameDescriptor("this"));
596 min.setExpression(en);
597 checkExpressionNode(md, nametable, min.getExpression(), null);
604 void checkOpNode(MethodDescriptor md, SymbolTable nametable, OpNode on, TypeDescriptor td) {
605 checkExpressionNode(md, nametable, on.getLeft(), null);
606 if (on.getRight()!=null)
607 checkExpressionNode(md, nametable, on.getRight(), null);
608 TypeDescriptor ltd=on.getLeft().getType();
609 TypeDescriptor rtd=on.getRight()!=null?on.getRight().getType():null;
610 TypeDescriptor lefttype=null;
611 TypeDescriptor righttype=null;
612 Operation op=on.getOp();
615 case Operation.LOGIC_OR:
616 case Operation.LOGIC_AND:
617 if (!(ltd.isBoolean()&&rtd.isBoolean()))
621 on.setRightType(rtd);
622 on.setType(new TypeDescriptor(TypeDescriptor.BOOLEAN));
625 case Operation.BIT_OR:
626 case Operation.BIT_XOR:
627 case Operation.BIT_AND:
628 // 5.6.2 Binary Numeric Promotion
629 //TODO unboxing of reference objects
630 if (ltd.isDouble()||rtd.isDouble())
632 else if (ltd.isFloat()||rtd.isFloat())
634 else if (ltd.isLong()||rtd.isLong())
635 lefttype=new TypeDescriptor(TypeDescriptor.LONG);
637 lefttype=new TypeDescriptor(TypeDescriptor.INT);
640 on.setLeftType(lefttype);
641 on.setRightType(righttype);
642 on.setType(lefttype);
645 case Operation.EQUAL:
646 case Operation.NOTEQUAL:
647 // 5.6.2 Binary Numeric Promotion
648 //TODO unboxing of reference objects
649 if (ltd.isBoolean()||rtd.isBoolean()) {
650 if (!(ltd.isBoolean()&&rtd.isBoolean()))
652 righttype=lefttype=new TypeDescriptor(TypeDescriptor.BOOLEAN);
653 } else if (ltd.isPtr()||rtd.isPtr()) {
654 if (!(ltd.isPtr()&&rtd.isPtr()))
658 } else if (ltd.isDouble()||rtd.isDouble())
659 righttype=lefttype=new TypeDescriptor(TypeDescriptor.DOUBLE);
660 else if (ltd.isFloat()||rtd.isFloat())
661 righttype=lefttype=new TypeDescriptor(TypeDescriptor.FLOAT);
662 else if (ltd.isLong()||rtd.isLong())
663 righttype=lefttype=new TypeDescriptor(TypeDescriptor.LONG);
665 righttype=lefttype=new TypeDescriptor(TypeDescriptor.INT);
667 on.setLeftType(lefttype);
668 on.setRightType(righttype);
669 on.setType(new TypeDescriptor(TypeDescriptor.BOOLEAN));
678 // 5.6.2 Binary Numeric Promotion
679 //TODO unboxing of reference objects
680 if (!ltd.isNumber()||!rtd.isNumber())
683 if (ltd.isDouble()||rtd.isDouble())
684 lefttype=new TypeDescriptor(TypeDescriptor.DOUBLE);
685 else if (ltd.isFloat()||rtd.isFloat())
686 lefttype=new TypeDescriptor(TypeDescriptor.FLOAT);
687 else if (ltd.isLong()||rtd.isLong())
688 lefttype=new TypeDescriptor(TypeDescriptor.LONG);
690 lefttype=new TypeDescriptor(TypeDescriptor.INT);
692 on.setLeftType(lefttype);
693 on.setRightType(righttype);
694 on.setType(new TypeDescriptor(TypeDescriptor.BOOLEAN));
698 //TODO: Need special case for strings eventually
705 // 5.6.2 Binary Numeric Promotion
706 //TODO unboxing of reference objects
707 if (!ltd.isNumber()||!rtd.isNumber())
708 throw new Error("Error in "+on.printNode(0));
710 if (ltd.isDouble()||rtd.isDouble())
711 lefttype=new TypeDescriptor(TypeDescriptor.DOUBLE);
712 else if (ltd.isFloat()||rtd.isFloat())
713 lefttype=new TypeDescriptor(TypeDescriptor.FLOAT);
714 else if (ltd.isLong()||rtd.isLong())
715 lefttype=new TypeDescriptor(TypeDescriptor.LONG);
717 lefttype=new TypeDescriptor(TypeDescriptor.INT);
719 on.setLeftType(lefttype);
720 on.setRightType(righttype);
721 on.setType(lefttype);
724 case Operation.LEFTSHIFT:
725 case Operation.RIGHTSHIFT:
726 if (!rtd.isIntegerType())
728 //5.6.1 Unary Numeric Promotion
729 if (rtd.isByte()||rtd.isShort()||rtd.isInt())
730 righttype=new TypeDescriptor(TypeDescriptor.INT);
734 on.setRightType(righttype);
735 if (!ltd.isIntegerType())
737 case Operation.UNARYPLUS:
738 case Operation.UNARYMINUS:
739 case Operation.POSTINC:
740 case Operation.POSTDEC:
741 case Operation.PREINC:
742 case Operation.PREDEC:
745 //5.6.1 Unary Numeric Promotion
746 if (ltd.isByte()||ltd.isShort()||ltd.isInt())
747 lefttype=new TypeDescriptor(TypeDescriptor.INT);
750 on.setLeftType(lefttype);
751 on.setType(lefttype);
760 if (!typeutil.isSuperorType(td, on.getType())) {
761 System.out.println(td);
762 System.out.println(on.getType());
763 throw new Error("Type of rside not compatible with type of lside"+on.printNode(0));