private static boolean writtenInside(PsiVariable variable, PsiElement element) {
if (element instanceof PsiAssignmentExpression) {
PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression) element;
PsiExpression lExpression = assignmentExpression.getLExpression();
if (lExpression instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) lExpression).resolve() == variable) return true;
} else if (PsiUtil.isIncrementDecrementOperation(element)) {
PsiElement operand =
element instanceof PsiPostfixExpression
? ((PsiPostfixExpression) element).getOperand()
: ((PsiPrefixExpression) element).getOperand();
if (operand instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) operand).resolve() == variable) return true;
}
PsiElement[] children = element.getChildren();
for (PsiElement child : children) {
if (writtenInside(variable, child)) return true;
}
return false;
}
