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use giterated_models::{
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error::OperationError,
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object::{self, GiteratedObject, ObjectRequestError},
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object_backend::ObjectBackend,
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operation::{GiteratedOperation, OperationState},
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};
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use crate::{
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result::{FfiError, FfiResult},
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state::State,
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value_ex::FfiValueUntyped,
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FfiFuture, FfiSliceRef, FfiValueMut, StackPinned,
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};
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use core::fmt::Debug;
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use super::{Object, ObjectABI, VTable};
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#[derive(Clone)]
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pub struct RuntimeHandle {
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pub vtable: &'static VTable<RuntimeHandle>,
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}
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impl ObjectABI for RuntimeHandle {
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type VTable = RuntimeVTable;
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}
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impl RuntimeHandle {
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pub async fn handle_serialized(
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&self,
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object: &str,
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operation_type: &str,
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operation_payload: &[u8],
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) -> Result<Vec<u8>, OperationError<Vec<u8>>> {
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todo!()
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}
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pub async fn handle_typed<O, D>(
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&self,
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object: O,
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operation: D,
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) -> Result<D::Success, OperationError<D::Failure>>
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where
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O: GiteratedObject,
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D: GiteratedOperation<O>,
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{
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todo!()
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}
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pub fn inner_get_object(
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&self,
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object_str: &str,
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state: &mut State,
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) -> Result<Object, OperationError<ObjectRequestError>> {
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let pinned_object_str = (*object_str.as_bytes()).pin();
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let mut pinned_state = (*state).pin();
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let result = unsafe {
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(self.vtable.get_object)(unsafe { pinned_object_str.grant_ref() }, unsafe {
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pinned_state.grant_mut()
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})
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};
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todo!()
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}
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}
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#[derive(Clone, Copy)]
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pub struct RuntimeVTable {
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pub(crate) handle_fn: unsafe extern "C" fn(
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FfiSliceRef<str>,
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FfiSliceRef<str>,
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FfiSliceRef<str>,
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FfiSliceRef<[u8]>,
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FfiSliceRef<[u8]>,
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) -> FfiFuture<
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FfiResult<FfiValueUntyped, OperationError<FfiError>>,
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>,
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pub(crate) get_object:
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unsafe extern "C" fn(
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object_str: FfiSliceRef<u8>,
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state: FfiValueMut<State>,
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) -> FfiResult<Object, OperationError<ObjectRequestError>>,
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}
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impl RuntimeVTable {
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pub const fn new<R: IntoRuntimeVtable>() -> RuntimeVTable {
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RuntimeVTable {
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handle_fn: R::handle,
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get_object: R::get_object,
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}
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}
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}
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unsafe impl Send for RuntimeVTable {}
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unsafe impl Sync for RuntimeVTable {}
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pub trait IntoRuntimeVtable: Sized {
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const VTABLE: RuntimeVTable = RuntimeVTable::new::<Self>();
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unsafe extern "C" fn handle(
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object_kind: FfiSliceRef<str>,
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operation_name: FfiSliceRef<str>,
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object: FfiSliceRef<str>,
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operation_payload: FfiSliceRef<[u8]>,
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operation_state: FfiSliceRef<[u8]>,
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) -> FfiFuture<FfiResult<FfiValueUntyped, OperationError<FfiError>>>;
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unsafe extern "C" fn get_object(
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object_str: FfiSliceRef<u8>,
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operation_state: FfiValueMut<State>,
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) -> FfiResult<Object, OperationError<ObjectRequestError>>;
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}
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#[async_trait::async_trait(?Send)]
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impl ObjectBackend<State> for RuntimeHandle {
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async fn object_operation<O, D>(
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&self,
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object: O,
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operation: &str,
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payload: D,
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operation_state: &mut State,
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) -> Result<D::Success, OperationError<D::Failure>>
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where
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O: GiteratedObject + Debug + 'static,
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D: GiteratedOperation<O> + Debug + 'static,
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D::Success: Clone,
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D::Failure: Clone,
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{
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todo!()
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}
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async fn get_object<O: GiteratedObject + Debug + 'static>(
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&self,
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object_str: &str,
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operation_state: &mut State,
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) -> Result<object::Object<O, Self, State>, OperationError<ObjectRequestError>> {
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let result = self.inner_get_object(object_str, operation_state)?;
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Ok(unsafe { object::Object::new_unchecked(result.cast(), self.clone()) })
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}
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}
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|