We used to emit the forward declaration for the type we were editing
*before* `#pragma once`. This was not good per se, but it also lead to
failures due to the introduction of `_PACKED`, which is not yet defined
at that stage.
This analysis will be used for the following features:
1) Edit Type in the Model
2) Edit Function Prototype in the Model
3) Add Type to the Model
It takes C code as an input, parses it and produces a Model
type that represents the C type.
Alessandro Di Federico