static PsiElement[] getOccurrences(GrIntroduceParameterSettings settings) {
final GrParametersOwner scope = settings.getToReplaceIn();
final GrExpression expression = settings.getExpression();
if (expression != null) {
final PsiElement expr = PsiUtil.skipParentheses(expression, false);
if (expr == null) return PsiElement.EMPTY_ARRAY;
final PsiElement[] occurrences = GroovyRefactoringUtil.getExpressionOccurrences(expr, scope);
if (occurrences == null || occurrences.length == 0) {
throw new GrRefactoringError(GroovyRefactoringBundle.message("no.occurrences.found"));
}
return occurrences;
} else {
final GrVariable var = settings.getVar();
LOG.assertTrue(var != null);
final List<PsiElement> list = Collections.synchronizedList(new ArrayList<PsiElement>());
ReferencesSearch.search(var, new LocalSearchScope(scope))
.forEach(
new Processor<PsiReference>() {
@Override
public boolean process(PsiReference psiReference) {
final PsiElement element = psiReference.getElement();
if (element != null) {
list.add(element);
}
return true;
}
});
return list.toArray(new PsiElement[list.size()]);
}
}
