Method ParseFlexBufferValue

native/thirdpart/flatbuffers/idl_parser.cpp:3039–3115

}

CheckedError Parser::ParseFlexBufferValue(flexbuffers::Builder *builder) {
  ParseDepthGuard depth_guard(this);
  ECHECK(depth_guard.Check());

  switch (token_) {
    case '{': {
      auto start = builder->StartMap();
      size_t fieldn_outer = 0;
      auto err =
          ParseTableDelimiters(fieldn_outer, nullptr,
                               [&](const std::string &name, size_t &fieldn,
                                   const StructDef *) -> CheckedError {
                                 builder->Key(name);
                                 ECHECK(ParseFlexBufferValue(builder));
                                 fieldn++;
                                 return NoError();
                               });
      ECHECK(err);
      builder->EndMap(start);
      if (builder->HasDuplicateKeys())
        return Error("FlexBuffers map has duplicate keys");
      break;
    }
    case '[': {
      auto start = builder->StartVector();
      uoffset_t count = 0;
      ECHECK(ParseVectorDelimiters(count, [&](uoffset_t &) -> CheckedError {
        return ParseFlexBufferValue(builder);
      }));
      builder->EndVector(start, false, false);
      break;
    }
    case kTokenStringConstant:
      builder->String(attribute_);
      EXPECT(kTokenStringConstant);
      break;
    case kTokenIntegerConstant:
      builder->Int(StringToInt(attribute_.c_str()));
      EXPECT(kTokenIntegerConstant);
      break;
    case kTokenFloatConstant: {
      double d;
      StringToNumber(attribute_.c_str(), &d);
      builder->Double(d);
      EXPECT(kTokenFloatConstant);
      break;
    }
    case '-':
    case '+': {
      // `[-+]?(nan|inf|infinity)`, see ParseSingleValue().
      const auto sign = static_cast<char>(token_);
      NEXT();
      if (token_ != kTokenIdentifier)
        return Error("floating-point constant expected");
      attribute_.insert(0, 1, sign);
      ECHECK(ParseFlexBufferNumericConstant(builder));
      NEXT();
      break;