public void test_isMoreSpecificThan_typeArguments_upperBound() {
ClassElementImpl classS = classElement("A");
TypeParameterElementImpl typeParameterT = new TypeParameterElementImpl(identifier("T"));
typeParameterT.setBound(classS.getType());
TypeParameterTypeImpl typeParameterTypeT = new TypeParameterTypeImpl(typeParameterT);
// <T extends S>
// T << S
assertTrue(typeParameterTypeT.isMoreSpecificThan(classS.getType()));
}
/**
* Create the types associated with the given type parameters, setting the type of each type
* parameter, and return an array of types corresponding to the given parameters.
*
* @param typeParameters the type parameters for which types are to be created
* @return an array of types corresponding to the given parameters
*/
private Type[] createTypeParameterTypes(TypeParameterElement[] typeParameters) {
int typeParameterCount = typeParameters.length;
Type[] typeArguments = new Type[typeParameterCount];
for (int i = 0; i < typeParameterCount; i++) {
TypeParameterElementImpl typeParameter = (TypeParameterElementImpl) typeParameters[i];
TypeParameterTypeImpl typeParameterType = new TypeParameterTypeImpl(typeParameter);
typeParameter.setType(typeParameterType);
typeArguments[i] = typeParameterType;
}
return typeArguments;
}
@Override
public Void visitTypeParameter(TypeParameter node) {
SimpleIdentifier parameterName = node.getName();
TypeParameterElementImpl typeParameter = new TypeParameterElementImpl(parameterName);
TypeParameterTypeImpl typeParameterType = new TypeParameterTypeImpl(typeParameter);
typeParameter.setType(typeParameterType);
currentHolder.addTypeParameter(typeParameter);
parameterName.setStaticElement(typeParameter);
return super.visitTypeParameter(node);
}
public void test_isMoreSpecificThan_typeArguments_transitivity_typeParameters() {
ClassElementImpl classS = classElement("A");
TypeParameterElementImpl typeParameterU = new TypeParameterElementImpl(identifier("U"));
typeParameterU.setBound(classS.getType());
TypeParameterTypeImpl typeParameterTypeU = new TypeParameterTypeImpl(typeParameterU);
TypeParameterElementImpl typeParameterT = new TypeParameterElementImpl(identifier("T"));
typeParameterT.setBound(typeParameterTypeU);
TypeParameterTypeImpl typeParameterTypeT = new TypeParameterTypeImpl(typeParameterT);
// <T extends U> and <U extends S>
// T << S
assertTrue(typeParameterTypeT.isMoreSpecificThan(classS.getType()));
}
public void test_isMoreSpecificThan_typeArguments_transitivity_interfaceTypes() {
// class A {}
// class B extends A {}
//
ClassElement classA = classElement("A");
ClassElement classB = classElement("B", classA.getType());
InterfaceType typeA = classA.getType();
InterfaceType typeB = classB.getType();
TypeParameterElementImpl typeParameterT = new TypeParameterElementImpl(identifier("T"));
typeParameterT.setBound(typeB);
TypeParameterTypeImpl typeParameterTypeT = new TypeParameterTypeImpl(typeParameterT);
// <T extends B>
// T << A
assertTrue(typeParameterTypeT.isMoreSpecificThan(typeA));
}