Method hash

cpp/src/arrow/compute/expression.cc:266–279

}

size_t Expression::hash() const {
  if (auto lit = literal()) {
    if (lit->is_scalar()) {
      return lit->scalar()->hash();
    }
    return 0;
  }

  if (auto ref = field_ref()) {
    return ref->hash();
  }

  return CallNotNull(*this)->hash;
}

bool Expression::IsBound() const {
  if (type() == nullptr) return false;