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

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modified:   ../../src/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
Undefined Pairs auf oberster Ebene wird zu new HashTable<>() in compute
	new file:   ../../src/de/dhbwstuttgart/typeinference/unify/inheritVariance.java
	modified:   ../../src/de/dhbwstuttgart/typeinference/unify/model/OrderingUnifyPair.java
Unterscheidung zw. <. <? ein compere eingefuegt
	modified:   ../../src/de/dhbwstuttgart/typeinference/unify/model/PlaceholderType.java
Attribut wildcardable eingefuegt
This commit is contained in:
Martin Plümicke 2018-04-24 00:53:33 +02:00
parent 5f8c73f176
commit 62d44eb15c
5 changed files with 70 additions and 12 deletions
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10
src/de/dhbwstuttgart/core/JavaTXCompiler.java
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@ -126,20 +126,30 @@ public class JavaTXCompiler {
xConsSet = xConsSet.stream().map(x -> {
//Hier muss ueberlegt werden, ob
//1. alle Argument- und Retuntyp-Variablen in allen UnifyPairs
// mit disableWildcardtable() werden.
//2. alle Typvariablen mit Argument- oder Retuntyp-Variablen
//in Beziehung auch auf disableWildcardtable() gesetzt werden muessen
//PL 2018-04-23
if ((x.getLhsType() instanceof PlaceholderType)) {
if (paraTypeVarNames.contains(x.getLhsType().getName())) {
((PlaceholderType)x.getLhsType()).setVariance((byte)1);
((PlaceholderType)x.getLhsType()).disableWildcardtable();
}
if (returnTypeVarNames.contains(x.getLhsType().getName())) {
((PlaceholderType)x.getLhsType()).setVariance((byte)-1);
((PlaceholderType)x.getLhsType()).disableWildcardtable();
}
}
if ((x.getRhsType() instanceof PlaceholderType)) {
if (paraTypeVarNames.contains(x.getRhsType().getName())) {
((PlaceholderType)x.getRhsType()).setVariance((byte)1);
((PlaceholderType)x.getRhsType()).disableWildcardtable();
}
if (returnTypeVarNames.contains(x.getRhsType().getName())) {
((PlaceholderType)x.getRhsType()).setVariance((byte)-1);
((PlaceholderType)x.getRhsType()).disableWildcardtable();
}
}
return x;

26
src/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
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@ -135,7 +135,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>> {
}
@Override
protected Set<Set<UnifyPair>> compute() {
return unify(eq, fc, parallel);
Set<Set<UnifyPair>> res = unify(eq, fc, parallel);
if (isUndefinedPairSetSet(res)) { return new HashSet<>(); }
else return res;
}
/**
@ -547,6 +549,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>> {
//.filter(y -> abhSubst.contains(y))
.collect(Collectors.toCollection(HashSet::new));
Set<PlaceholderType> vars = durchschnitt.stream().map(x -> (PlaceholderType)x.getLhsType()).collect(Collectors.toCollection(HashSet::new));
int len = nextSetasList.size();
nextSetasList = nextSetasList.stream().filter(x -> {
//Boolean ret = false;
//for (PlaceholderType var : vars) {
@ -559,6 +562,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>> {
writeLog("Durchschnitt: " + durchschnitt.toString());
writeLog("nextSet: " + nextSet.toString());
writeLog("nextSetasList: " + nextSetasList.toString());
writeLog("Number erased Elements (undef): " + (len - nextSetasList.size()));
System.out.println("");
}
//if (nextSetasList.size() == 0 && isUndefinedPairSetSet(result) && nextSet.size() > 1) {
@ -959,15 +963,17 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>> {
for (UnifyType tq : thetaQs) {
Set<UnifyType> smaller = fc.smaller(unifier.apply(tq));
//eingefuegt PL 2018-03-29 Anfang ? ext. theta hinzufuegen
Set<UnifyType> smaller_ext = smaller.stream().filter(x -> !(x instanceof ExtendsType) && !(x instanceof SuperType))
.map(x -> {
//BinaryOperator<HashMap<PlaceholderType,PlaceholderType>> combiner = (aa,b) -> { aa.putAll(b); return aa;}; //Variablenumbenennung rausgenommen
//HashMap<PlaceholderType,PlaceholderType> hm = x.getInvolvedPlaceholderTypes().stream() //Variablen muessen wahrscheinlich erhalten bleiben
// .reduce(new HashMap<PlaceholderType,PlaceholderType>(),
// (aa, b)-> { aa.put(b,PlaceholderType.freshPlaceholder()); return aa; }, combiner);
return new ExtendsType (x);})//.accept(new freshPlaceholder(), hm));}
.collect(Collectors.toCollection(HashSet::new));
smaller.addAll(smaller_ext);
if (a.isWildcardable()) {
Set<UnifyType> smaller_ext = smaller.stream().filter(x -> !(x instanceof ExtendsType) && !(x instanceof SuperType))
.map(x -> {
//BinaryOperator<HashMap<PlaceholderType,PlaceholderType>> combiner = (aa,b) -> { aa.putAll(b); return aa;}; //Variablenumbenennung rausgenommen
//HashMap<PlaceholderType,PlaceholderType> hm = x.getInvolvedPlaceholderTypes().stream() //Variablen muessen wahrscheinlich erhalten bleiben
// .reduce(new HashMap<PlaceholderType,PlaceholderType>(),
// (aa, b)-> { aa.put(b,PlaceholderType.freshPlaceholder()); return aa; }, combiner);
return new ExtendsType (x);})//.accept(new freshPlaceholder(), hm));}
.collect(Collectors.toCollection(HashSet::new));
smaller.addAll(smaller_ext);
}
//eingefuegt PL 2018-03-29 Ende ? ext. theta hinzufuegen
for(UnifyType theta : smaller) {
List<UnifyType> freshTphs = new ArrayList<>();

18
src/de/dhbwstuttgart/typeinference/unify/inheritVariance.java Normal file
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@ -0,0 +1,18 @@
package de.dhbwstuttgart.typeinference.unify;
import java.util.HashMap;
import de.dhbwstuttgart.typeinference.unify.model.PlaceholderType;
public class inheritVariance extends visitUnifyTypeVisitor<HashMap<PlaceholderType,Integer>> {
@Override
public PlaceholderType visit(PlaceholderType phty, HashMap<PlaceholderType,Integer> ht) {
if (ht.containsKey(phty)) {
if (phty.getVariance() == 0) {
phty.setVariance(ht.get(phty));
}
}
return phty;
}
}

15
src/de/dhbwstuttgart/typeinference/unify/model/OrderingUnifyPair.java
View File

@ -53,7 +53,13 @@ public class OrderingUnifyPair extends Ordering<Set<UnifyPair>> {
*/
public Pair<Integer,Set<UnifyPair>> compare (UnifyType left, UnifyType right) {
UnifyPair up = new UnifyPair(left, right, PairOperator.SMALLERDOT);
UnifyPair up;
if (left instanceof WildcardType || right instanceof WildcardType) {
up = new UnifyPair(left, right, PairOperator.SMALLERDOTWC);
}
else {
up = new UnifyPair(left, right, PairOperator.SMALLERDOT);
}
TypeUnifyTask unifyTask = new TypeUnifyTask();
HashSet<UnifyPair> hs = new HashSet<>();
hs.add(up);
@ -61,7 +67,12 @@ public class OrderingUnifyPair extends Ordering<Set<UnifyPair>> {
long smallerLen = smallerRes.stream().filter(x -> !(x.getLhsType() instanceof PlaceholderType && x.getRhsType() instanceof PlaceholderType)).count();
if (smallerLen == 0) return new Pair<>(-1, smallerRes);
else {
up = new UnifyPair(right, left, PairOperator.SMALLERDOT);
if (left instanceof WildcardType || right instanceof WildcardType) {
up = new UnifyPair(right, left, PairOperator.SMALLERDOTWC);
}
else {
up = new UnifyPair(right, left, PairOperator.SMALLERDOT);
}
//TypeUnifyTask unifyTask = new TypeUnifyTask();
hs = new HashSet<>();
hs.add(up);

13
src/de/dhbwstuttgart/typeinference/unify/model/PlaceholderType.java
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@ -38,6 +38,12 @@ public final class PlaceholderType extends UnifyType{
*/
private final boolean IsGenerated;
/**
* isWildcardable gibt an, ob ein Wildcardtyp dem PlaceholderType zugeordnet werden darf
*/
private boolean wildcardable = true;
/**
* variance shows the variance of the pair
* -1: contravariant
@ -98,6 +104,13 @@ public final class PlaceholderType extends UnifyType{
return variance;
}
public Boolean isWildcardable() {
return wildcardable;
}
public void disableWildcardtable() {
wildcardable = false;
}
@Override
Set<UnifyType> smArg(IFiniteClosure fc) {
return fc.smArg(this);