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use giterated_models::{
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object::GiteratedObject,
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value::{GetValue, GiteratedObjectValue},
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};
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use crate::{AnySuccess, FFIBox};
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use super::OperationVTable;
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#[repr(C)]
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pub struct NewAnyValue {
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inner: FFIBox<()>,
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vtable: ValueVTable,
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}
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unsafe impl Send for NewAnyValue {}
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unsafe impl Sync for NewAnyValue {}
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impl NewAnyValue {
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pub fn new<O, V: IntoValueVTable<O> + Send + Sync>(value: V) -> Self {
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NewAnyValue {
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inner: FFIBox::from_box(Box::new(value)).untyped(),
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vtable: ValueVTable::new::<O, V>(),
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}
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}
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}
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impl From<NewAnyValue> for AnySuccess {
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fn from(val: NewAnyValue) -> Self {
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unsafe { AnySuccess::from_raw(val.inner, (val.vtable.get_value_vtable)()) }
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}
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}
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#[derive(Clone, Copy)]
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#[repr(C)]
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pub struct ValueVTable {
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pub get_value_vtable: unsafe extern "C" fn() -> OperationVTable,
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pub deserialize: unsafe extern "C" fn(&[u8]) -> Result<NewAnyValue, ()>,
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pub serialize: unsafe extern "C" fn(NewAnyValue) -> Result<FFIBox<[u8]>, ()>,
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}
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impl ValueVTable {
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pub fn new<O, T: IntoValueVTable<O>>() -> Self {
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Self {
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get_value_vtable: T::get_value_vtable,
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deserialize: T::deserialize,
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serialize: T::serialize,
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}
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}
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}
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pub trait IntoValueVTable<O> {
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unsafe extern "C" fn get_value_vtable() -> OperationVTable;
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unsafe extern "C" fn deserialize(src: &[u8]) -> Result<NewAnyValue, ()>;
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unsafe extern "C" fn serialize(this: NewAnyValue) -> Result<FFIBox<[u8]>, ()>;
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}
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impl<O, V> IntoValueVTable<O> for V
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where
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O: GiteratedObject,
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V: GiteratedObjectValue<Object = O>,
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{
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unsafe extern "C" fn get_value_vtable() -> OperationVTable {
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OperationVTable::new::<O, GetValue>()
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}
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unsafe extern "C" fn deserialize(src: &[u8]) -> Result<NewAnyValue, ()> {
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let _guard = trace_span!(
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"deserialize value",
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object = O::object_name(),
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value = V::value_name()
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);
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trace!("Deserializing");
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let deserialized: V = serde_json::from_slice(src).unwrap();
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Ok(NewAnyValue {
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inner: FFIBox::from_box(Box::new(deserialized)).untyped(),
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vtable: ValueVTable::new::<O, V>(),
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})
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}
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unsafe extern "C" fn serialize(_this: NewAnyValue) -> Result<FFIBox<[u8]>, ()> {
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todo!()
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}
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}
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