ambee/giterated

Huge refactor to prep for moving the daemon over to the plugin architecture

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Amber - ⁨2⁩ years ago

parent: tbd commit: ⁨5df753c⁩

⁨giterated-plugins/giterated-plugin/src/vtable/value.rs⁩ - ⁨1867⁩ bytes

Raw

1	use giterated_models::{object::GiteratedObject, value::GiteratedObjectValue};
2
3	use crate::FFIBox;
4
5	#[repr(C)]
6	pub struct NewAnyValue {
7	/// A pointer to the plugin-local object type. We are not capable of
8	/// knowing what this type is, we use the provided vtable.
9	inner: FFIBox<()>,
10	vtable: ValueVTable,
11	}
12
13	impl NewAnyValue {
14	pub fn new<O, V: IntoValueVTable<O>>(value: V) -> Self {
15	NewAnyValue {
16	inner: FFIBox::from_box(Box::new(value)).untyped(),
17	vtable: ValueVTable::new::<O, V>(),
18	}
19	}
20	}
21
22	#[derive(Clone, Copy)]
23	#[repr(C)]
24	pub struct ValueVTable {
25	pub deserialize: unsafe extern "C" fn(&[u8]) -> Result<NewAnyValue, ()>,
26	pub serialize: unsafe extern "C" fn(NewAnyValue) -> Result<FFIBox<[u8]>, ()>,
27	}
28
29	impl ValueVTable {
30	pub fn new<O, T: IntoValueVTable<O>>() -> Self {
31	Self {
32	deserialize: T::deserialize,
33	serialize: T::serialize,
34	}
35	}
36	}
37
38	pub trait IntoValueVTable<O> {
39	unsafe extern "C" fn deserialize(src: &[u8]) -> Result<NewAnyValue, ()>;
40	unsafe extern "C" fn serialize(this: NewAnyValue) -> Result<FFIBox<[u8]>, ()>;
41	}
42
43	impl<O, V> IntoValueVTable<O> for V
44	where
45	O: GiteratedObject,
46	V: GiteratedObjectValue<Object = O>,
47	{
48	unsafe extern "C" fn deserialize(src: &[u8]) -> Result<NewAnyValue, ()> {
49	let _guard = trace_span!(
50	"deserialize value",
51	object = O::object_name(),
52	value = V::value_name()
53	);
54
55	trace!("Deserializing");
56	let deserialized: V = serde_json::from_slice(src).unwrap();
57
58	Ok(NewAnyValue {
59	inner: FFIBox::from_box(Box::new(deserialized)).untyped(),
60	vtable: ValueVTable::new::<O, V>(),
61	})
62	}
63
64	unsafe extern "C" fn serialize(this: NewAnyValue) -> Result<FFIBox<[u8]>, ()> {
65	todo!()
66	}
67	}
68