Re: [Xen-devel] [RFC] Generating Go bindings for libxl

[Nicholas Rosbrook <rosbrookn@xxxxxxxxxxxx>]

Hi George,

I made the changes that we discussed WRT C to Go type marshaling. See [1] for 
generated code.

In addition, I took a pass at implementing Go to C type marshaling. The 
generated toC functions are also in [1].

Finally, I made the necessary changes[2] to the existing xenlight.go so that it 
uses the new generated code. To summarize, from my commit message:

    * Define missing libxl builtin types
    * Remove types that are now defined from gengotypes.py
    * Define fromC/toC for all builtin types
    * Add CreateDomain to demonstrate functioning generated code
    * Update any existing code so that compilation succeeds

I've so far kept the changes to xenlight.go within the scope of the code 
generation effort. I figured the rest of the API development would be our next 
step.

Besides that, the last thing I need is to know how I should integrate this into 
the build. Of note, gengotypes.py needs to import tools/libxl/idl.py. Maybe 
that part is easier to discuss on IRC.

Best,
-NR

[1] 
https://github.com/enr0n/xen/blob/gen-go-types/tools/golang/xenlight/xenlight_helpers.go
[2] https://github.com/enr0n/xen/commit/70ec81acaf69df1c9446f94aeb4cebbe8983e6c5
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