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#![allow(improper_ctypes_definitions)]
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pub mod callback;
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pub mod future;
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pub mod handle;
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pub mod new_stack;
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pub mod vtable;
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#[macro_use]
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extern crate tracing;
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use std::{marker::PhantomData, mem::forget};
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use callback::RuntimeState;
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use dlopen2::wrapper::WrapperApi;
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use handle::PluginInitializationState;
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use new_stack::{FFIPluginMeta, PluginState};
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pub use vtable::{AnyFailure, AnyObject, AnyOperation, AnySuccess, NewAnySetting, NewAnyValue};
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use vtable::{HostVTable, InitializationVTable};
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#[derive(WrapperApi)]
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pub struct GiteratedPluginApi {
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plugin_meta: unsafe extern "C" fn() -> FFIPluginMeta,
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load_host_vtable: unsafe extern "C" fn(vtable: &HostVTable),
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load_initialization_vtable: unsafe extern "C" fn(vtable: &InitializationVTable),
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initialize: unsafe extern "C" fn(runtime_state: *const RuntimeState) -> PluginState,
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initialize_registration: unsafe extern "C" fn(
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init_state: *mut PluginInitializationState,
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) -> *mut PluginInitializationState,
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load_type_metadata: unsafe extern "C" fn(metadata: *mut ()),
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}
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#[repr(C)]
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pub struct FFIBox<T: ?Sized>(*mut T);
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impl<T: ?Sized> FFIBox<T> {
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pub fn from_box(src: Box<T>) -> Self {
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Self(Box::into_raw(src))
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}
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pub fn untyped(self) -> FFIBox<()> {
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FFIBox(self.0 as *mut ())
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}
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pub unsafe fn retype<N>(self) -> FFIBox<N> {
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FFIBox(self.0 as *mut N)
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}
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pub unsafe fn into_box(self) -> Box<T> {
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Box::from_raw(self.0)
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}
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pub unsafe fn transmute_ref<N>(&self) -> &N {
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unsafe { (self.0 as *const N).as_ref() }.unwrap()
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}
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}
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impl ToString for FFIBox<str> {
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fn to_string(&self) -> String {
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let slice: Box<[u8]> = unsafe { Box::from_raw(self.0.clone() as *mut _) };
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let string = unsafe { std::str::from_boxed_utf8_unchecked(slice) };
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String::from(string)
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}
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}
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impl<T: ?Sized> AsRef<T> for FFIBox<T> {
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fn as_ref(&self) -> &T {
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unsafe { self.0.as_ref() }.unwrap()
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}
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}
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impl<T: ?Sized> std::ops::Deref for FFIBox<T> {
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type Target = T;
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fn deref(&self) -> &Self::Target {
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unsafe { self.0.as_ref() }.unwrap()
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}
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}
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#[repr(transparent)]
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pub struct FFI<T, Ownership: FfiOwnershipDrop> {
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inner: *const (),
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_marker: PhantomData<(T, Ownership)>,
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}
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#[repr(C)]
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pub struct FFIData<T> {
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drop_fn: *const extern "C" fn(*const FFIData<T>),
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drop_state: *const (),
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allocation: T,
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}
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pub struct Owned;
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impl FfiOwnershipDrop for Owned {}
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pub struct StackOwned;
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impl FfiOwnershipDrop for StackOwned {}
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trait FfiOwnershipDrop {}
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pub struct PinnedRef;
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impl FfiOwnershipDrop for PinnedRef {}
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pub struct PinnedMut;
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impl FfiOwnershipDrop for PinnedMut {}
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impl<T> FFI<T, Owned> {
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pub fn place_heap(value: T) -> FFI<T, Owned> {
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todo!()
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}
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pub fn ref_guard<'a>(&'a self) -> StackPinnedGuard<'a, T> {
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todo!()
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}
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}
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impl<T> FFI<T, StackOwned> {
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pub fn place_stack<'a>(value: T) -> StackPinned<'a, T> {
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todo!()
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}
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}
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pub struct StackPinned<'a, T> {
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descriptor: FFIData<T>,
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_lifetime: PhantomData<&'a ()>,
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}
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impl<'a, T> StackPinned<'a, T> {
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pub unsafe fn grant_ref(&self) -> FFI<T, PinnedRef> {
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todo!()
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}
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}
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pub struct StackPinnedGuard<'a, T> {
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pinned_owned: &'a FFI<T, Owned>,
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}
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impl<'a, T> StackPinnedGuard<'a, T> {
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pub unsafe fn grant_ref(&self) -> FFI<T, PinnedRef> {
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todo!()
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}
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}
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impl<T, O: FfiOwnershipDrop> Drop for FFI<T, O> {
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fn drop(&mut self) {
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todo!()
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}
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}
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pub struct FFISlice<T: ?Sized> {
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len: usize,
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slice: T,
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}
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fn example() {
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let stack_ffi_value = FFI::place_stack(());
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let stack_ffi_ref = unsafe { stack_ffi_value.grant_ref() };
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let foo = stack_ffi_ref;
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let heap_ffi_value = FFI::place_heap(());
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let heap_ffi_ref_guard = heap_ffi_value.ref_guard();
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let heap_ffi_ref = unsafe { heap_ffi_ref_guard.grant_ref() };
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}
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