Overriding FFI ctype constructors?
- From: Claire Lewis <claire_lewis@xxxxxxxxxxx>
- To: <luajit@xxxxxxxxxxxxx>
- Date: Fri, 8 Jun 2012 15:28:41 +1030
Is there some way to provide my own constructor for a ctype in FFI?
Specifically for an opaque type that I have a C call to create, such as:
ffi.cdef[[
struct OpaqueType;
struct OpaqueType *NewOpaqueType();
...
]]
OpaqueType = ffi.typeof("struct OpaqueType;")
myot = OpaqueType(); -- error, unknown size
Ideally, I'd like to be able to set up OpaqueType to call NewOpaqueType(), or a
Lua function so I can do the same, and massage arguments as needed.
Currently I'm doing so by doubling up symbols:
_OpaqueType = ffi.typeof("struct OpaqueType;") -- type
OpaqueType = ffi.test.NewOpaqueType -- constructor
But this is not as clean as I would like; I'd prefer to have the ctype still be
represented by the same name, as with other structs.
Thankyou,
- Claire
Other related posts:
