Function ParseOpData

tensorflow/lite/core/api/flatbuffer_conversions.cc:136–822

Parse the appropriate data out of the op. This handles builtin data explicitly as there are flatbuffer schemas. If it returns kTfLiteOk, it passes the data out with `builtin_data`, which need to be released by calling `free`.` If it returns kTfLiteError, `builtin_data` will be `nullptr`.

// need to be released by calling `free`.`
// If it returns kTfLiteError, `builtin_data` will be `nullptr`.
TfLiteStatus ParseOpData(const Operator* op, BuiltinOperator op_type,
                         ErrorReporter* error_reporter,
                         BuiltinDataAllocator* allocator, void** builtin_data) {
  auto parse_padding = [](Padding padding) {
    switch (padding) {
      case Padding_SAME:
        return kTfLitePaddingSame;
      case Padding_VALID:
        return kTfLitePaddingValid;
    }
    return kTfLitePaddingUnknown;
  };
  auto parse_activation = [](ActivationFunctionType activation) {
    switch (activation) {
      case ActivationFunctionType_NONE:
        return kTfLiteActNone;
      case ActivationFunctionType_RELU:
        return kTfLiteActRelu;
      case ActivationFunctionType_RELU_N1_TO_1:
        return kTfLiteActRelu1;
      case ActivationFunctionType_RELU6:
        return kTfLiteActRelu6;
      case ActivationFunctionType_TANH:
        return kTfLiteActTanh;
      case ActivationFunctionType_SIGN_BIT:
        return kTfLiteActSignBit;
    }
    return kTfLiteActNone;
  };
  auto parseLSHProjectionType = [](LSHProjectionType type) {
    switch (type) {
      case LSHProjectionType_SPARSE:
        return kTfLiteLshProjectionSparse;
      case LSHProjectionType_DENSE:
        return kTfLiteLshProjectionDense;
      default:
        return kTfLiteLshProjectionUnknown;
    }
  };
  auto parseCombinerType = [](CombinerType type) {
    switch (type) {
      case CombinerType_MEAN:
        return kTfLiteCombinerTypeMean;
      case CombinerType_SQRTN:
        return kTfLiteCombinerTypeSqrtn;
      case CombinerType_SUM:
      default:
        return kTfLiteCombinerTypeSum;
    }
  };

  SafeBuiltinDataAllocator safe_allocator(allocator);
  *builtin_data = nullptr;
  switch (op_type) {
    case BuiltinOperator_CONV_2D: {
      auto params = safe_allocator.Allocate<TfLiteConvParams>();
      if (auto* conv_params = op->builtin_options_as_Conv2DOptions()) {
        params->padding = parse_padding(conv_params->padding());