@Nullable
public static String getReferencePrefix(@NotNull PsiElement insertedElement, int offsetInFile) {
final PsiReference ref = insertedElement.getContainingFile().findReferenceAt(offsetInFile);
if (ref != null) {
final PsiElement element = ref.getElement();
final int endIndex = offsetInFile - element.getTextRange().getStartOffset();
final int beginIndex = ref.getRangeInElement().getStartOffset();
if (beginIndex > endIndex) {
LOG.error(
"Inconsistent reference (found at offset not included in its range): ref="
+ ref
+ " element="
+ element
+ " text="
+ element.getText());
}
if (beginIndex < 0) {
LOG.error(
"Inconsistent reference (begin < 0): ref="
+ ref
+ " element="
+ element
+ "; begin="
+ beginIndex
+ " text="
+ element.getText());
}
LOG.assertTrue(endIndex >= 0);
return element.getText().substring(beginIndex, endIndex);
}
return null;
}
