private static boolean isPartiallySubstituted(PsiType type) {
if (!(type instanceof PsiClassType)) return false;
PsiType[] parameters = ((PsiClassType) type).getParameters();
PsiClassType.ClassResolveResult classResolveResult = ((PsiClassType) type).resolveGenerics();
PsiClass clazz = classResolveResult.getElement();
if (clazz == null) return false;
return clazz.getTypeParameters().length != parameters.length;
}
@Nullable
private PsiType extractListTypeFromContainingClass(PsiElement element) {
PsiClass listClass = PsiTreeUtil.getParentOfType(element, PsiClass.class);
if (listClass == null) {
return null;
}
final PsiMethod[] getMethods = listClass.findMethodsByName("get", true);
if (getMethods.length == 0) {
return null;
}
final PsiType type = getMethods[0].getReturnType();
if (!(type instanceof PsiClassType)) {
return null;
}
final PsiClassType classType = (PsiClassType) type;
final PsiClass parameterClass = classType.resolve();
if (parameterClass == null) {
return null;
}
PsiClass subClass = null;
while (listClass != null && !listClass.hasTypeParameters()) {
subClass = listClass;
listClass = listClass.getSuperClass();
}
if (listClass == null || subClass == null) {
return TypeUtils.getObjectType(element);
}
final PsiTypeParameter[] typeParameters = listClass.getTypeParameters();
if (!parameterClass.equals(typeParameters[0])) {
return TypeUtils.getObjectType(element);
}
final PsiReferenceList extendsList = subClass.getExtendsList();
if (extendsList == null) {
return null;
}
final PsiJavaCodeReferenceElement[] referenceElements = extendsList.getReferenceElements();
if (referenceElements.length == 0) {
return null;
}
final PsiType[] types = referenceElements[0].getTypeParameters();
if (types.length == 0) {
return TypeUtils.getObjectType(element);
}
return types[0];
}
private static PsiClassType getEnumSuperType(
@NotNull PsiClass psiClass, @NotNull PsiElementFactory factory) {
PsiClassType superType;
final PsiManager manager = psiClass.getManager();
final PsiClass enumClass =
JavaPsiFacade.getInstance(manager.getProject())
.findClass("java.lang.Enum", psiClass.getResolveScope());
if (enumClass == null) {
try {
superType = (PsiClassType) factory.createTypeFromText("java.lang.Enum", null);
} catch (IncorrectOperationException e) {
superType = null;
}
} else {
final PsiTypeParameter[] typeParameters = enumClass.getTypeParameters();
PsiSubstitutor substitutor = PsiSubstitutor.EMPTY;
if (typeParameters.length == 1) {
substitutor = substitutor.put(typeParameters[0], factory.createType(psiClass));
}
superType = new PsiImmediateClassType(enumClass, substitutor);
}
return superType;
}