Hi.
I have a situation with libgit2 where the function I need to call is a field in
a struct (the field gets populated with different functions with the same
signature depending on certain conditions).
I’m facing two problems now:
1. how do I define a function as the field type of an NBExternalStructure?
2. how can I call the function?
I’ve tried using callbacks as field types. That works as far as I can access
the functions by pointer. But how would I then call that function?
I’ve looked at NBNativeFunction and NBNativeFunctionGen but I can’t see how I
should use either of those to make a plain call.
Here’s a more precise description of my problem:
writepack := LG2GitOdbWritepackS new.
… “initialize the struct externally”
“now call the function ‘commit’ and pass the arguments (this is how I imagine
it could work…)"
writepack commit
value: writepack
value: anotherStruct.
Needed struct fields:
backend: git_odb_backend *
append: int (*)(git_odb_writepack *, const void *, size_t,
git_transfer_progress *)
commit: int (*)(git_odb_writepack *, git_transfer_progress *)
free: void (*)(git_odb_writepack *)
My current (ad hoc) struct fields:
fieldsDesc
^#(
LG2GitOdbO backend;
LG2WritePackAppendCb append;
LG2WritePackCommitCb commit;
LG2WritePackFreeCb free;
)
I’d even be happy if I have to implement a method on LG2GitOdbWritepackS for
every function call (e.g. “writepack commit: arg1 and: arg2”) but how would I
make the call?
Any ideas?
Max
