Function Parse

tensorflow/lite/delegates/gpu/gl/compiler/variable_accessor.cc:31–52

Parse the following regex manually name(\[index\])?(\.field)?

// Parse the following regex manually
// name(\[index\])?(\.field)?
VariableReference Parse(absl::string_view input) {
  VariableReference ref;
  auto start_index = input.find('[');
  if (start_index != std::string::npos) {
    auto end_index = input.rfind(']');
    if (end_index == std::string::npos) {
      return ref;
    }
    ref.index = input.substr(start_index + 1, end_index - start_index - 1);
    ref.name = input.substr(0, start_index);
    ref.field = input.substr(end_index + 1);
  } else {
    auto dot = input.find('.');
    if (dot != std::string::npos) {
      ref.name = input.substr(0, dot);
      ref.field = input.substr(dot);
    } else {
      ref.name = input;
    }
  }
  return ref;
}

}  // namespace variable_accessor_internal