Method ParseRoot

native/thirdpart/flatbuffers/idl_parser.cpp:3165–3247

}

CheckedError Parser::ParseRoot(const char *source, const char **include_paths,
                               const char *source_filename) {
  ECHECK(DoParse(source, include_paths, source_filename, nullptr));

  // Check that all types were defined.
  for (auto it = structs_.vec.begin(); it != structs_.vec.end();) {
    auto &struct_def = **it;
    if (struct_def.predecl) {
      if (opts.proto_mode) {
        // Protos allow enums to be used before declaration, so check if that
        // is the case here.
        EnumDef *enum_def = nullptr;
        for (size_t components =
                 struct_def.defined_namespace->components.size() + 1;
             components && !enum_def; components--) {
          auto qualified_name =
              struct_def.defined_namespace->GetFullyQualifiedName(
                  struct_def.name, components - 1);
          enum_def = LookupEnum(qualified_name);
        }
        if (enum_def) {
          // This is pretty slow, but a simple solution for now.
          auto initial_count = struct_def.refcount;
          for (auto struct_it = structs_.vec.begin();
               struct_it != structs_.vec.end(); ++struct_it) {
            auto &sd = **struct_it;
            for (auto field_it = sd.fields.vec.begin();
                 field_it != sd.fields.vec.end(); ++field_it) {
              auto &field = **field_it;
              if (field.value.type.struct_def == &struct_def) {
                field.value.type.struct_def = nullptr;
                field.value.type.enum_def = enum_def;
                auto &bt = IsVector(field.value.type)
                               ? field.value.type.element
                               : field.value.type.base_type;
                FLATBUFFERS_ASSERT(bt == BASE_TYPE_STRUCT);
                bt = enum_def->underlying_type.base_type;
                struct_def.refcount--;
                enum_def->refcount++;
              }
            }
          }
          if (struct_def.refcount)
            return Error("internal: " + NumToString(struct_def.refcount) + "/" +
                         NumToString(initial_count) +
                         " use(s) of pre-declaration enum not accounted for: " +
                         enum_def->name);
          structs_.dict.erase(structs_.dict.find(struct_def.name));
          it = structs_.vec.erase(it);
          delete &struct_def;
          continue;  // Skip error.
        }
      }
      auto err = "type referenced but not defined (check namespace): " +
                 struct_def.name;
      if (struct_def.original_location)
        err += ", originally at: " + *struct_def.original_location;
      return Error(err);