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A native C++ binding generator (`cpp_native.nim`), the C++ counterpart of the C
and Go native paths and companion to the CBOR `cpp.nim`. It emits
`<lib>_native.hpp`: an idiomatic C++ struct + `toC`/`fromC` per `{.ffi.}` type,
and a `<Lib>Node` class whose methods marshal typed args into / read typed
struct returns out of the native ABI (`<name>` entry points + flat C structs in
`<lib>.h`) — zero serialization. Wired into genBindings under
`targetLang=cpp` + `-d:ffiMode=native`; emits the native C header alongside so
the binding is self-contained. Task: `genbindings_cpp_native`.
First cut covers scalar/string/bool/nested-struct fields (create/version/echo);
seq/Option params are `// SKIPPED`, and native typed events are next. Filename
is `_native.hpp` for now to coexist with the CBOR `.hpp` (rename is a follow-up).
Verified end-to-end: the generated example builds and round-trips a typed
EchoResponse (`make run`).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
C++ bindings — native (generated)
Generated native (zero-serialization) C++ bindings for the timer library —
the C++ counterpart of c_bindings / go_bindings. The CBOR C++ bindings live
in ../cpp_bindings.
| File | Description |
|---|---|
my_timer_native.hpp |
Generated wrapper: a C++ struct + toC/fromC per {.ffi.} type, and a My_timerNode class whose methods marshal typed args into / read typed struct returns out of the native ABI — no CBOR. |
my_timer.h |
Native C header (structs + entry points) the .hpp includes. |
main.cpp, Makefile |
A driver + build. |
my_timer::My_timerNode node(my_timer::TimerConfig{"my-app"});
std::cout << node.Version();
auto r = node.Echo(my_timer::EchoRequest{"hello", 5}); // -> EchoResponse
std::cout << r.echoed << " / " << r.timerName;
Regenerate with nimble genbindings_cpp_native (from the repo root).
Build & run
cd examples/timer/cpp_native_bindings
make run
Status
First cut. Methods whose params/returns use only scalar / string / bool /
nested-struct fields are generated (create, version, echo). Methods using
sequences or optionals are emitted as // SKIPPED for now (complex,
schedule) — those plus native typed events are the next increments. The
native-bare / _cbor filename reconciliation (matching the C headers) is also a
follow-up; today this emits my_timer_native.hpp so it coexists with the CBOR
my_timer.hpp.