Is there a good way to specify struct return types for CEnv c_func_defs?

[jordan-schneider]

I want to add a function to a CEnv environment that returns a struct.

cffi exposes the ffi.new() (doc) function to allow array and struct types to be defined. Otherwise, ffi.cdef won't understand the struct type in the function signature. Is there some good way to pass the struct name to CEnv so that it will be loaded in time for the ffi.cdef of the function signature to catch it?

[jordan-schneider]

I apologize, I was misunderstanding how cffi works. In order to define a custom struct you need to make a cdef call defining the full struct ahead of time.

super.__init__(
  ...,
  c_func_defs=["struct s {int a; float b;};", "struct s func();"]
)