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modified: resources/bytecode/javFiles/Scalar.jav

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modified:   src/main/java/de/dhbwstuttgart/typeinference/unify/RuleSet.java
? extends ty <! Ty' im erase1 korrigiert
This commit is contained in:
pl@gohorb.ba-horb.de 2023-04-14 15:12:43 +02:00
parent 4078239815
commit e5ff08e0df
2 changed files with 42 additions and 16 deletions
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2
resources/bytecode/javFiles/Scalar.jav
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@ -14,7 +14,7 @@ public class Scalar extends Vector<Integer> {
i=i+1;
}
}
mul(v) {
var ret = 0;
var i = 0;

56
src/main/java/de/dhbwstuttgart/typeinference/unify/RuleSet.java
View File

@ -13,6 +13,7 @@ import java.util.function.Function;
import java.util.stream.Collectors;
import de.dhbwstuttgart.exceptions.DebugException;
import de.dhbwstuttgart.syntaxtree.type.ExtendsWildcardType;
import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
import de.dhbwstuttgart.typeinference.unify.interfaces.IRuleSet;
import de.dhbwstuttgart.typeinference.unify.model.ExtendsType;
@ -390,26 +391,51 @@ public class RuleSet implements IRuleSet{
if((pair.getPairOp() != PairOperator.SMALLERDOT) && (pair.getPairOp() != PairOperator.SMALLERNEQDOT))
return false;
if (pair.getPairOp() == PairOperator.SMALLERNEQDOT) {
UnifyType lhs = pair.getLhsType();
UnifyType rhs = pair.getRhsType();
if (lhs instanceof WildcardType) {
lhs = ((WildcardType)lhs).getWildcardedType();
}
if (rhs instanceof WildcardType) {
rhs = ((WildcardType)rhs).getWildcardedType();
}
if (lhs.equals(rhs)){
return false;
}
UnifyType lhsType = pair.getLhsType();
UnifyType rhsType = pair.getRhsType();
/*
* ty <. ? extends ty' is wrong
*/
if (rhsType instanceof ExtendsType) {
return false;
}
/*
* ? super ty <. ty' is wrong
* except Ty' = Object or ty' = ? super Object
*/
if ((lhsType instanceof SuperType) &&
(!(rhsType.equals(new ReferenceType("java.lang.Object", false)))) &&
!(rhsType.equals(new SuperType (new ReferenceType("java.lang.Object", false))))) {
return false;
}
/*
* ? extends ty <. ty' is equivalent to ty < ty'
*/
if (lhsType instanceof ExtendsType) {
lhsType = ((WildcardType)lhsType).getWildcardedType();
}
/*
* ty <. ? super ty' ist equivalent to ty <. ty'
*/
if (rhsType instanceof SuperType) {
rhsType = ((WildcardType)rhsType).getWildcardedType();
}
/*
* SMALLERNEQDOT => type must not be equal
*/
if (pair.getPairOp() == PairOperator.SMALLERNEQDOT && lhsType.equals(rhsType)){
return false;
}
UnifyType lhsType = pair.getLhsType();
if(!(lhsType instanceof ReferenceType) && !(lhsType instanceof PlaceholderType))
return false;
UnifyType rhsType = pair.getRhsType();
if(!(rhsType instanceof ReferenceType) && !(rhsType instanceof PlaceholderType))
return false;