pm/FURPS/application/nim_ffi.md

{Feature Name} FURPS

Functionality

1. Provides the core logic needed to expose any synchronous or asynchronous Nim library to a C-FFI library.
2. The exposed C library can be used in Golang.
3. The exposed C library can be used in Rust.
4. The exposed C library can be used in Python.

Usability

1. Introduce new pragma definitions, such as {.ffi.}, to appropriately annotate types and procedures.

Reliability

1. The exposed C library does not leak memory.
2. The exposed C library never hangs when working asynchronously.

Performance

1. ...

Supportability

1. Any Nim project can use it and can be installed using Nimble, similarly to how nim-chronos is imported.
2. The interaction with the exposed C library is through JSON.
3. The interaction with the exposed C library is through protobuf.

+ (Privacy, Anonymity, Deployments)

1. nwaku repository uses nim-ffi to expose the existing libwaku functionality.