@Nullable
public static PsiType rawSecondGeneric(PsiType type, Project project) {
if (!(type instanceof PsiClassType)) return null;
final PsiClassType.ClassResolveResult result = ((PsiClassType) type).resolveGenerics();
final PsiClass element = result.getElement();
if (element == null) return null;
final PsiType[] parameters = ((PsiClassType) type).getParameters();
boolean changed = false;
for (int i = 0; i < parameters.length; i++) {
PsiType parameter = parameters[i];
if (parameter == null) continue;
final Ref<PsiType> newParam = new Ref<PsiType>();
parameter.accept(
new PsiTypeVisitorEx<Object>() {
@Nullable
@Override
public Object visitClassType(PsiClassType classType) {
if (classType.getParameterCount() > 0) {
newParam.set(classType.rawType());
}
return null;
}
@Nullable
@Override
public Object visitCapturedWildcardType(PsiCapturedWildcardType capturedWildcardType) {
newParam.set(capturedWildcardType.getWildcard().getBound());
return null;
}
@Nullable
@Override
public Object visitWildcardType(PsiWildcardType wildcardType) {
newParam.set(wildcardType.getBound());
return null;
}
});
if (!newParam.isNull()) {
changed = true;
parameters[i] = newParam.get();
}
}
if (!changed) return null;
return JavaPsiFacade.getElementFactory(project).createType(element, parameters);
}
