private static PsiElement[] getParameterElementsToSearch(final PsiParameter parameter) {
final PsiMethod method = (PsiMethod) parameter.getDeclarationScope();
PsiMethod[] overrides =
OverridingMethodsSearch.search(method, true).toArray(PsiMethod.EMPTY_ARRAY);
for (int i = 0; i < overrides.length; i++) {
overrides[i] = (PsiMethod) overrides[i].getNavigationElement();
}
List<PsiElement> elementsToSearch = new ArrayList<PsiElement>(overrides.length + 1);
elementsToSearch.add(parameter);
int idx = method.getParameterList().getParameterIndex(parameter);
for (PsiMethod override : overrides) {
final PsiParameter[] parameters = override.getParameterList().getParameters();
if (idx < parameters.length) {
elementsToSearch.add(parameters[idx]);
}
}
return elementsToSearch.toArray(new PsiElement[elementsToSearch.size()]);
}
private static List<PsiElement> getTopLevelRegExpChars(String regExpText, Project project) {
@SuppressWarnings("deprecation")
PsiFile file = PsiFileFactory.getInstance(project).createFileFromText("A.regexp", regExpText);
List<PsiElement> result = null;
final PsiElement[] children = file.getChildren();
for (PsiElement child : children) {
PsiElement[] grandChildren = child.getChildren();
if (grandChildren.length != 1)
return Collections
.emptyList(); // a | b, more than one branch, can not predict in current way
for (PsiElement grandGrandChild : grandChildren[0].getChildren()) {
if (result == null) result = new ArrayList<>();
result.add(grandGrandChild);
}
}
return result != null ? result : Collections.<PsiElement>emptyList();
}