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modified: src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java

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Nachtraegliches Einfuegen von Variance in OderConstraints auskommentiert.

	modified:   src/main/java/de/dhbwstuttgart/syntaxtree/factory/UnifyTypeFactory.java
Variance im konvertieren eingefuegt

	modified:   src/main/java/de/dhbwstuttgart/syntaxtree/type/TypePlaceholder.java
Variace eingefuegt

	modified:   src/main/java/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
In OderConstraints Variance bei der Erstellung eingefuegt
This commit is contained in:
pl@gohorb.ba-horb.de 2020-02-06 11:39:27 +01:00
parent 28400c8bde
commit a5662cdd9a
4 changed files with 28 additions and 5 deletions
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2
src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
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@ -603,6 +603,7 @@ public class JavaTXCompiler {
//Es wird davon ausgegangen, dass in OderConstraints in Bedingungen für Parameter die Typen der Argumente links stehen
//und die Typen der Rückgabewerte immer rechts stehen
/*
unifyCons.getOderConstraints().forEach(z -> z.forEach(y -> y.forEach(x -> {
if ((x.getLhsType() instanceof PlaceholderType) && x.getPairOp().compareTo(PairOperator.SMALLERDOT) == 0) {
((PlaceholderType) x.getLhsType()).setVariance((byte)1);
@ -611,6 +612,7 @@ public class JavaTXCompiler {
((PlaceholderType) x.getRhsType()).setVariance((byte)-1);
}
})));
*/
System.out.println("Unify nach Oder-Constraints-Anpassung:" + unifyCons.toString());
Set<PlaceholderType> varianceTPHold;

1
src/main/java/de/dhbwstuttgart/syntaxtree/factory/UnifyTypeFactory.java
View File

@ -122,6 +122,7 @@ public class UnifyTypeFactory {
System.out.println("XXX"+innerType);
}
PlaceholderType ntph = new PlaceholderType(tph.getName());
ntph.setVariance(tph.getVariance());
int in = PLACEHOLDERS.indexOf(ntph);
if (in == -1) {
PLACEHOLDERS.add(ntph);

11
src/main/java/de/dhbwstuttgart/syntaxtree/type/TypePlaceholder.java
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@ -18,7 +18,8 @@ import org.antlr.v4.runtime.Token;
public class TypePlaceholder extends RefTypeOrTPHOrWildcardOrGeneric
{
private final String name;
int variance = 0;
/**
@ -69,6 +70,14 @@ public class TypePlaceholder extends RefTypeOrTPHOrWildcardOrGeneric
return name;
}
public void setVariance(int variance) {
this.variance= variance;
}
public int getVariance() {
return this.variance;
}
@Override
public void accept(ASTVisitor visitor) {
visitor.visit(this);

19
src/main/java/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
View File

@ -17,6 +17,7 @@ import de.dhbwstuttgart.typeinference.assumptions.MethodAssumption;
import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
import de.dhbwstuttgart.typeinference.constraints.*;
import de.dhbwstuttgart.typeinference.unify.model.PairOperator;
import de.dhbwstuttgart.typeinference.unify.model.PlaceholderType;
import java.util.*;
import java.util.stream.Collectors;
@ -164,7 +165,7 @@ public class TYPEStmt implements StatementVisitor{
public void visit(MethodCall methodCall) {
methodCall.receiver.accept(this);
//Overloading:
Set<Constraint> methodConstraints = new HashSet<>();
Set<Constraint<Pair>> methodConstraints = new HashSet<>();
for(MethodAssumption m : this.getMethods(methodCall.name, methodCall.arglist, info)){
GenericsResolver resolver = getResolverInstance();
methodConstraints.add(generateConstraint(methodCall, m, info, resolver));
@ -559,7 +560,7 @@ public class TYPEStmt implements StatementVisitor{
protected Constraint<Pair> generateConstraint(MethodCall forMethod, MethodAssumption assumption,
TypeInferenceBlockInformation info, GenericsResolver resolver){
Constraint methodConstraint = new Constraint();
Constraint<Pair> methodConstraint = new Constraint<>();
ClassOrInterface receiverCl = assumption.getReceiver();
/*
List<RefTypeOrTPHOrWildcardOrGeneric> params = new ArrayList<>();
@ -572,10 +573,17 @@ public class TYPEStmt implements StatementVisitor{
*/
RefTypeOrTPHOrWildcardOrGeneric retType = assumption.getReceiverType(resolver);
methodConstraint.add(new Pair(forMethod.receiver.getType(), retType,
RefTypeOrTPHOrWildcardOrGeneric zwSp;
methodConstraint.add(new Pair(zwSp = forMethod.receiver.getType(), retType,
PairOperator.SMALLERDOT));
methodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(),
if (zwSp instanceof TypePlaceholder) {
((TypePlaceholder) zwSp).setVariance(1);
}
methodConstraint.add(new Pair(assumption.getReturnType(resolver), zwSp = forMethod.getType(),
PairOperator.EQUALSDOT));
if (zwSp instanceof TypePlaceholder) {
((TypePlaceholder) zwSp).setVariance(-1);
}
methodConstraint.addAll(generateParameterConstraints(forMethod, assumption, info, resolver));
return methodConstraint;
}
@ -588,6 +596,9 @@ public class TYPEStmt implements StatementVisitor{
RefTypeOrTPHOrWildcardOrGeneric argType = foMethod.arglist.getArguments().get(i).getType();
RefTypeOrTPHOrWildcardOrGeneric assType = assumption.getArgTypes(resolver).get(i);
ret.add(new Pair(argType, assType, PairOperator.SMALLERDOT));
if (argType instanceof TypePlaceholder) {
((TypePlaceholder) argType).setVariance(1);
}
}
return ret;
}