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https://github.com/logos-messaging/nim-ffi.git
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725a7b6551
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>
42 lines
1.1 KiB
Makefile
42 lines
1.1 KiB
Makefile
# Build + run the GENERATED native C++ example.
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#
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# make run # build the Nim dylib + the C++ driver against the generated hpp
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# make clean
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#
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# Regenerate the bindings with `nimble genbindings_cpp_native` (from the repo
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# root). The Nim library is compiled from the repo root so its vendored Nimble
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# dependencies resolve.
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REPO_ROOT := $(abspath ../../..)
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NIM_SRC := $(REPO_ROOT)/examples/timer/timer.nim
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UNAME_S := $(shell uname -s)
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ifeq ($(UNAME_S),Darwin)
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LIBNAME := libmy_timer.dylib
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RPATH := -Wl,-rpath,.
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else
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LIBNAME := libmy_timer.so
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RPATH := -Wl,-rpath,'$$ORIGIN'
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endif
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CXX ?= c++
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CXXFLAGS ?= -std=c++17 -Wall -Wextra -O2 -I.
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NIMFLAGS := --mm:orc -d:chronicles_log_level=WARN --app:lib --noMain \
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--nimMainPrefix:libmy_timer
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.PHONY: all run clean
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all: example
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$(LIBNAME):
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cd $(REPO_ROOT) && nim c $(NIMFLAGS) -o:$(CURDIR)/$(LIBNAME) $(NIM_SRC)
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example: main.cpp my_timer_native.hpp my_timer.h $(LIBNAME)
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$(CXX) $(CXXFLAGS) main.cpp -L. -lmy_timer $(RPATH) -o example
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run: example
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./example
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clean:
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rm -f example $(LIBNAME)
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