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Remove inner type variables

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Victorious3 2022-07-03 18:10:40 +02:00
parent ef06a8de38
commit de417d3ee6
1 changed files with 39 additions and 1 deletions
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40
src/main/java/de/dhbwstuttgart/target/generate/ASTToTargetAST.java
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@ -13,6 +13,7 @@ import de.dhbwstuttgart.typeinference.result.*;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class ASTToTargetAST {
@ -268,10 +269,45 @@ public class ASTToTargetAST {
}
computedGenericsOfClasses.put(classOrInterface, result);
eliminateCyclesAndInfima(result);
eliminateInnerTypeVariables(classOrInterface, result);
System.out.println("Class " + classOrInterface.getClassName().getClassName() + ": " + result);
return result;
}
void findTphs(RefTypeOrTPHOrWildcardOrGeneric type, Set<TypePlaceholder> tphs) {
if (type instanceof RefType refType) {
refType.getParaList().forEach(t -> findTphs(t, tphs));
} else if (type instanceof TypePlaceholder tph) {
tph = equality.getOrDefault(tph, tph);
var concreteType = concreteTypes.get(tph);
if (concreteType != null) {
findTphs(concreteType, tphs);
return;
}
tphs.add(tph);
}
}
void eliminateInnerTypeVariables(ClassOrInterface classOrInterface, Set<ResultPair<?, ?>> input) {
Set<TypePlaceholder> referenced = new HashSet<>();
for (var field : classOrInterface.getFieldDecl()) {
findTphs(field.getType(), referenced);
}
var oldInput = new HashSet<>(input);
for (var pair : oldInput) {
if (!referenced.contains(pair.getLeft())) {
input.remove(pair);
for (var pair2 : oldInput) {
if (pair2.getRight().equals(pair.getLeft())) {
input.remove(pair2);
input.add(new PairTPHsmallerTPH((TypePlaceholder) pair2.getLeft(), (TypePlaceholder) pair.getRight()));
}
}
}
}
}
void eliminateCyclesAndInfima(Set<ResultPair<?, ?>> input) {
// Eliminate cycles
var cycles = findCycles(input);
@ -346,7 +382,9 @@ public class ASTToTargetAST {
}
static Set<TypePlaceholder> allNodes(Set<ResultPair<?, ?>> input) {
return input.stream().map(pair -> (TypePlaceholder) pair.getLeft()).collect(Collectors.toSet());
return input.stream()
.filter(pair -> pair instanceof PairTPHsmallerTPH)
.flatMap(pair -> Stream.of((TypePlaceholder) pair.getLeft(), (TypePlaceholder) pair.getRight())).collect(Collectors.toSet());
}
static Set<TypePlaceholder> outgoingEdgesOf(TypePlaceholder tph, Set<ResultPair<?, ?>> input) {