refactoring and commenting

src/de/dhbwstuttgart/typeinference/unify/model/ExtendsType.java

@@ -17,15 +17,16 @@ public final class ExtendsType extends WildcardType {
 		super("? extends " + extendedType.getName(), extendedType);
 	}
 
+	/**
+	 * The extended type e.g. Integer in "? extends Integer"
+	 */
 	public UnifyType getExtendedType() {
 		return wildcardedType;
 	}
 	
-	@Override
-	public TypeParams getTypeParams() {
-		return wildcardedType.getTypeParams();
-	}
-	
+	/**
+	 * Sets the type parameters of the wildcarded type and returns a new extendstype that extends that type.
+	 */
 	@Override
 	public UnifyType setTypeParams(TypeParams newTp) {
 		return new ExtendsType(wildcardedType.setTypeParams(newTp));

src/de/dhbwstuttgart/typeinference/unify/model/SuperType.java

@@ -4,11 +4,23 @@ import java.util.Set;
 
 import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
 
+/**
+ * A super wildcard type e.g. ? super Integer.
+ * @author Florian Steurer
+ */
 public final class SuperType extends WildcardType {
+	
+	/**
+	 * Creates a new instance "? extends superedType"
+	 * @param superedType The type that is supered e.g. Integer in "? super Integer"
+	 */
 	public SuperType(UnifyType superedType) {
 		super("? super " + superedType.getName(), superedType);
 	}
 	
+	/**
+	 * The type that is supered e.g. Integer in "? super Integer"
+	 */
 	public UnifyType getSuperedType() {
 		return wildcardedType;
 	}
@@ -18,11 +30,9 @@ public final class SuperType extends WildcardType {
 		return "? super " + wildcardedType;
 	}
 	
-	@Override
-	public TypeParams getTypeParams() {
-		return wildcardedType.getTypeParams();
-	}
-
+	/**
+	 * Sets the type parameters of the wildcarded type and returns a new supertype that supers that type.
+	 */
 	@Override
 	public UnifyType setTypeParams(TypeParams newTp) {
 		return new SuperType(wildcardedType.setTypeParams(newTp));

src/de/dhbwstuttgart/typeinference/unify/model/WildcardType.java

@@ -29,6 +29,14 @@ public abstract class WildcardType extends UnifyType {
 		return wildcardedType;
 	}
 	
+	/**
+	 * Returns the type parameters of the WILDCARDED TYPE.
+	 */
+	@Override
+	public TypeParams getTypeParams() {
+		return wildcardedType.getTypeParams();
+	}
+	
 	@Override
 	public int hashCode() {
 		return wildcardedType.hashCode() + getName().hashCode() + 17;