ambee/giterated

Pre vtable changes

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Amber - ⁨1⁩ year ago

parent: tbd commit: ⁨d17a4b2⁩

⁨giterated-abi/src/vtable/mod.rs⁩ - ⁨860⁩ bytes

Raw

1	use std::{
2	marker::PhantomData, mem::transmute, ops::Deref
3	};
4
5	mod object;
6	pub mod operation;
7	mod setting;
8	mod value;
9
10	pub use object::*;
11	pub use setting::*;
12	pub use value::*;
13
14	pub trait ObjectABI {
15	type VTable;
16	}
17
18	#[repr(transparent)]
19	pub struct VTable<T: ObjectABI> {
20	_marker: PhantomData<T>,
21	}
22
23	impl<T: ObjectABI> VTable<T> {
24	/// Creates a new `VTable<T>` reference to a static vtable in memory.
25	///
26	/// Might be unsafe? It seems like it should be safe...
27	pub const fn new<V>(vtable: &'static V) -> &'static Self {
28	// We're going to transmute the reference to the typed vtable to us
29	// which will probably be fine
30	unsafe { transmute(vtable) }
31	}
32	}
33
34	impl<T: ObjectABI> Deref for VTable<T> {
35	type Target = T::VTable;
36
37	fn deref(&self) -> &Self::Target {
38	unsafe { transmute(self) }
39	}
40	}
41