To clarify, the issue is not with C++, which I am successfully wrapping with C.
The actual issue is using the c_object type in Lisp--if it comes
back as a CFFI pointer, how can I use it in Lisp as a Lisp object? Is
there something like:
(ffi:pointer-to-lisp-object ptr)
--
Stewart Milberger
Kavalogic, Inc.
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On July 28, 2018 2:46 PM, Stewart M. <sjm-mail@protonmail.com> wrote:
I am using CFFI with ECL to interface to a C++ library, which has a C++ class with a data member of type 'cl_object'. Simplified, my C++ code is:
class LispObject
{
public:
cl_object object;
};
extern "C" cl_object getObject(LispObject* lo) { return lo->object; }
extern "C" void setObject(LispObject* lo, cl_object clo) { lo->object = clo; }
The full code is:
Can I somehow declare the 'cl_object' type for the 'getValue()' and 'setValue()' functions using CFFI 'defcfun' to get and set ECL objects? Is there a technique using the lower-level FFI? I am looking for a way to do this without compiling C code embedded in Lisp, which I am aware ECL can do.
Thank you for any ideas!
--
Stewart Milberger
Kavalogic, Inc.