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reduceExt

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This commit is contained in:
Florian Steurer 2015-11-07 11:41:06 +01:00
parent 2483044e0c
commit c08a8fd347
4 changed files with 72 additions and 19 deletions
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8
src/de/dhbwstuttgart/syntaxtree/factory/UnifyTypeFactory.java
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@ -1,15 +1,13 @@
package de.dhbwstuttgart.syntaxtree.factory;
import de.dhbwstuttgart.syntaxtree.type.Type;
import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
import de.dhbwstuttgart.syntaxtree.type.WildcardType;
import de.dhbwstuttgart.syntaxtree.type.ExtendsWildcardType;
import de.dhbwstuttgart.syntaxtree.type.ObjectType;
import de.dhbwstuttgart.syntaxtree.type.RefType;
import de.dhbwstuttgart.syntaxtree.type.SuperWildcardType;
import de.dhbwstuttgart.syntaxtree.type.Type;
import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
import de.dhbwstuttgart.syntaxtree.type.WildcardType;
import de.dhbwstuttgart.typeinference.Menge;
import de.dhbwstuttgart.typeinference.Pair;
import de.dhbwstuttgart.typeinference.Pair.PairOperator;
public class UnifyTypeFactory {

65
src/de/dhbwstuttgart/typeinference/unifynew/RuleSet.java
View File

@ -84,8 +84,34 @@ public class RuleSet implements IRuleSet{
else if(lhsType instanceof ExtendsType)
lhsSType = (SimpleType) ((ExtendsType) lhsType).GetExtendedType();
else
return Optional.empty();
return null;
if(lhsSType.getTypeParams().empty())
return Optional.empty();
Type rhsType = pair.getRhsType();
if(!(rhsType instanceof ExtendsType))
return Optional.empty();
SimpleType rhsSType = (SimpleType) ((ExtendsType) rhsType).GetExtendedType();
if(rhsSType.getTypeParams().size() != lhsSType.getTypeParams().size())
return Optional.empty();
int[] pi = pi(lhsSType, rhsType);
if(pi.length == 0)
return Optional.empty();
Type[] rhsTypeParams = rhsSType.getTypeParams().asArray();
Type[] lhsTypeParams = lhsSType.getTypeParams().asArray();
Set<MPair> result = new HashSet<>();
for(int rhsIdx = 0; rhsIdx < rhsTypeParams.length; rhsIdx++)
result.add(new MPair(lhsTypeParams[pi[rhsIdx]], rhsTypeParams[rhsIdx], PairOperator.SMALLERDOTWC));
return Optional.of(result);
}
@Override
@ -116,7 +142,7 @@ public class RuleSet implements IRuleSet{
SimpleType lhsSType = (SimpleType) lhsType;
SimpleType rhsSType = (SimpleType) rhsType;
if(lhsSType.getTypeParams().empty()|| rhsSType.getTypeParams().empty() || lhsSType.getTypeParams().size() != rhsSType.getTypeParams().size())
if(lhsSType.getTypeParams().empty() || rhsSType.getTypeParams().empty() || lhsSType.getTypeParams().size() != rhsSType.getTypeParams().size())
return Optional.empty();
int[] pi = pi(lhsSType, rhsSType);
@ -129,7 +155,7 @@ public class RuleSet implements IRuleSet{
Set<MPair> result = new HashSet<>();
for(int rhsIdx = 0; rhsIdx < rhsTypeParams.length; rhsIdx++)
result.add(new MPair(lhsTypeParams[pi[rhsIdx]], rhsTypeParams[rhsIdx], PairOperator.SMALLERDOT));
result.add(new MPair(lhsTypeParams[pi[rhsIdx]], rhsTypeParams[rhsIdx], PairOperator.SMALLERDOTWC));
return Optional.of(result);
}
@ -165,12 +191,13 @@ public class RuleSet implements IRuleSet{
rhsSType = (SimpleType) ((SuperType) rhsType).GetSuperedType();
else
return Optional.empty();
if(rhsSType.getTypeParams().empty())
if(!rhsSType.getName().equals(lhsSType.getName()))
return Optional.empty();
if(rhsSType.getTypeParams().size() != lhsSType.getTypeParams().size())
return Optional.empty();
Assert.assertEquals(lhsSType.getTypeParams().size(), rhsSType.getTypeParams().size());
//if(rhsSType.getTypeParams().size() != lhsSType.getTypeParams().size())
// return Optional.empty();
Set<MPair> result = new HashSet<>();
@ -261,17 +288,31 @@ public class RuleSet implements IRuleSet{
* @return An array containing the values of pi for every type argument of C or an empty array if the search failed.
*/
private int[] pi(Type C, Type D) {
Type dFromFc = finiteClosure.getType(D.getName());
if(dFromFc == null)
Type cFromFc = finiteClosure.getType(C.getName());
if(cFromFc == null)
return new int[0];
Set<Type> smallerRhs = finiteClosure.smaller(dFromFc);
Optional<Type> opt = smallerRhs.stream().filter(x -> x.getName().equals(C.getName())).findAny();
Optional<Type> opt = Optional.empty();
if(D instanceof ExtendsType) {
SimpleType dSType = (SimpleType) ((ExtendsType) D).GetExtendedType();
opt = finiteClosure.grArg(cFromFc).stream()
.filter(x -> x instanceof ExtendsType)
.filter(x -> ((ExtendsType) x).GetExtendedType().equals(dSType.getName())).findAny();
}
else if(D instanceof SuperType) {
SimpleType dSType = (SimpleType) ((SuperType) D).GetSuperedType();
opt = finiteClosure.grArg(cFromFc).stream()
.filter(x -> x instanceof SuperType)
.filter(x -> ((SuperType) x).GetSuperedType().equals(dSType.getName())).findAny();
}
else if (D instanceof SimpleType)
opt = finiteClosure.greater(cFromFc).stream()
.filter(x -> x.getName().equals(D.getName())).findAny();
if(!opt.isPresent())
return new int[0];
Type cFromFc = opt.get();
Type dFromFc = opt.get();
Assert.assertEquals(cFromFc.getTypeParams().size(), dFromFc.getTypeParams().size());
Assert.assertTrue(dFromFc.getTypeParams().size() > 0);

13
src/de/dhbwstuttgart/typinference/unify/model/ExtendsType.java
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@ -1,9 +1,18 @@
package de.dhbwstuttgart.typinference.unify.model;
public class ExtendsType extends Type {
private Type extendedType;
public ExtendsType(Type extendedType) {
this.extendedType = extendedType;
}
public Type GetExtendedType() {
return null;
// TODO
return extendedType;
}
@Override
public TypeParams getTypeParams() {
return extendedType.getTypeParams();
}
}

5
src/de/dhbwstuttgart/typinference/unify/model/SuperType.java
View File

@ -16,4 +16,9 @@ public class SuperType extends Type {
public String toString() {
return "? super " + superedType;
}
@Override
public TypeParams getTypeParams() {
return superedType.getTypeParams();
}
}