@Nullable
public static PsiElement treeWalkUp(final XmlProcessor processor, PsiElement elt) {
if (elt == null) return null;
PsiElement cur = elt;
do {
if (cur instanceof XmlTag) {
final XmlTag tag = (XmlTag) cur;
if (!processor.process(tag)) {
if (processor instanceof ResolveProcessor) {
return ((ResolveProcessor) processor).getResult();
}
return null;
}
}
if (cur instanceof PsiFile) break;
cur = PsiTreeUtil.getPrevSiblingOfType(cur, XmlTag.class);
} while (cur != null);
return treeWalkUp(processor, elt.getContext());
}
