Records the user-chosen direction for telling the compiler a proc's wire
format, applicable across the whole pragma family ({.ffi.}, {.ffiHost.}, …):
- per-proc pragma argument: {.ffi: raw.} / {.ffi: cbor.} (A1), default native;
- library-wide override declareLibrary(defaultAbiFormat = raw) (C2);
- the global -d:ffiMode compile flag is discarded.
'raw' (not 'native') names the zero-serialization C-POD format. Design only;
captures open questions (symbol emission, resolution order, codegen impact) for
further discussion before implementation.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Captures the "super FFI" roadmap (future-work.md) and a concrete design for
item #1, typed host callbacks via {.ffiHost.} (design-host-callbacks.md),
including the per-language host-consumption sketches and the non-blocking
FFI-thread contract the generated wrappers must enforce.
The design is grounded in the existing threading model: a host answering from
its own thread cannot complete a chronos Future directly, so the completion
path mirrors the request path in reverse — enqueue + ThreadSignalPtr signal,
drained and completed on the FFI (event-loop) thread.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
