Your C++ struct is the schema: a proto3 serializer in C++26 reflection

I built a header-only proto3 wire-format library with one constraint: no .proto files, no codegen, no descriptor runtime. The user writes a plain C++ struct, and that struct is the schema:

#include "proto3.hpp"
struct SearchRequest {
std::string query; // field 1
std::int32_t page_number; // field 2
std::int32_t results_per_page; // field 3
};
SearchRequest req{"hello", 1, 10};
std::string bytes = proto3::serialize(req); // -> proto3 wire bytes
SearchRequest back = proto3::deserialize<SearchRequest>(bytes);


blog: Your C++ struct is the schema: a proto3 serializer in C++26 reflection

github: struct\_proto26

https://redd.it/1tcrfz4
@r_cpp