ambee/giterated

Fucking whatever there you go

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Amber - ⁨2⁩ years ago

parent: tbd commit: ⁨57c2ca5⁩

⁨giterated-plugin/src/vtable/setting.rs⁩ - ⁨1629⁩ bytes

Raw

1	use std::mem::transmute;
2
3	use giterated_models::settings::Setting;
4
5	use crate::FFIBox;
6
7	#[repr(C)]
8	pub struct NewAnySetting {
9	/// A pointer to the plugin-local object type. We are not capable of
10	/// knowing what this type is, we use the provided vtable.
11	inner: FFIBox<()>,
12	vtable: SettingVtable,
13	}
14
15	impl NewAnySetting {
16	pub fn new<V: IntoSettingVTable>(value: V) -> Self {
17	Self {
18	inner: FFIBox::from_box(Box::new(value)).untyped(),
19	vtable: SettingVtable::new::<V>(),
20	}
21	}
22
23	pub unsafe fn transmute_owned<T>(self) -> Box<T> {
24	Box::from_raw(self.inner.0 as *mut T)
25	}
26
27	pub unsafe fn transmute_ref<T>(&self) -> &T {
28	let ptr: *const T = transmute(self.inner.0);
29
30	ptr.as_ref().unwrap()
31	}
32	}
33
34	#[derive(Clone, Copy)]
35	#[repr(C)]
36	pub struct SettingVtable {
37	pub deserialize: unsafe extern "C" fn(&[u8]) -> Result<(), ()>,
38	pub serialize: unsafe extern "C" fn(NewAnySetting) -> Result<FFIBox<[u8]>, ()>,
39	}
40
41	impl SettingVtable {
42	pub fn new<T: IntoSettingVTable>() -> Self {
43	Self {
44	deserialize: T::deserialize,
45	serialize: T::serialize,
46	}
47	}
48	}
49
50	pub trait IntoSettingVTable {
51	unsafe extern "C" fn deserialize(src: &[u8]) -> Result<(), ()>;
52	unsafe extern "C" fn serialize(this: NewAnySetting) -> Result<FFIBox<[u8]>, ()>;
53	}
54
55	impl<S> IntoSettingVTable for S
56	where
57	S: Setting,
58	{
59	unsafe extern "C" fn deserialize(src: &[u8]) -> Result<(), ()> {
60	todo!()
61	}
62
63	unsafe extern "C" fn serialize(this: NewAnySetting) -> Result<FFIBox<[u8]>, ()> {
64	todo!()
65	}
66	}
67