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#[cfg(feature = "validation")]
pub mod validation;
use crate::{
ser::{Serializer, SharedSerializeRegistry},
ArchivePointee, ArchiveUnsized, MetadataResolver, RelPtr, SerializeUnsized,
};
use core::{borrow::Borrow, cmp, fmt, hash, marker::PhantomData, ops::Deref, pin::Pin, ptr};
#[repr(transparent)]
pub struct ArchivedRc<T: ArchivePointee + ?Sized, F>(RelPtr<T>, PhantomData<F>);
impl<T: ArchivePointee + ?Sized, F> ArchivedRc<T, F> {
#[inline]
pub fn get(&self) -> &T {
unsafe { &*self.0.as_ptr() }
}
#[inline]
pub unsafe fn get_pin_mut_unchecked(self: Pin<&mut Self>) -> Pin<&mut T> {
self.map_unchecked_mut(|s| &mut *s.0.as_mut_ptr())
}
#[inline]
pub unsafe fn resolve_from_ref<U: ArchiveUnsized<Archived = T> + ?Sized>(
value: &U,
pos: usize,
resolver: RcResolver<MetadataResolver<U>>,
out: *mut Self,
) {
let (fp, fo) = out_field!(out.0);
value.resolve_unsized(pos + fp, resolver.pos, resolver.metadata_resolver, fo);
}
#[inline]
pub fn serialize_from_ref<
U: SerializeUnsized<S> + ?Sized,
S: Serializer + SharedSerializeRegistry + ?Sized,
>(
value: &U,
serializer: &mut S,
) -> Result<RcResolver<MetadataResolver<U>>, S::Error> {
Ok(RcResolver {
pos: serializer.serialize_shared(value)?,
metadata_resolver: value.serialize_metadata(serializer)?,
})
}
}
impl<T: ArchivePointee + ?Sized, F> AsRef<T> for ArchivedRc<T, F> {
#[inline]
fn as_ref(&self) -> &T {
self.get()
}
}
impl<T: ArchivePointee + ?Sized, F> Borrow<T> for ArchivedRc<T, F> {
#[inline]
fn borrow(&self) -> &T {
self.get()
}
}
impl<T: ArchivePointee + fmt::Debug + ?Sized, F> fmt::Debug for ArchivedRc<T, F> {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.get().fmt(f)
}
}
impl<T: ArchivePointee + ?Sized, F> Deref for ArchivedRc<T, F> {
type Target = T;
#[inline]
fn deref(&self) -> &Self::Target {
self.get()
}
}
impl<T: ArchivePointee + fmt::Display + ?Sized, F> fmt::Display for ArchivedRc<T, F> {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.get().fmt(f)
}
}
impl<T: ArchivePointee + Eq + ?Sized, F> Eq for ArchivedRc<T, F> {}
impl<T: ArchivePointee + hash::Hash + ?Sized, F> hash::Hash for ArchivedRc<T, F> {
fn hash<H: hash::Hasher>(&self, state: &mut H) {
self.get().hash(state)
}
}
impl<T: ArchivePointee + Ord + ?Sized, F> Ord for ArchivedRc<T, F> {
fn cmp(&self, other: &Self) -> cmp::Ordering {
self.get().cmp(other.get())
}
}
impl<T, TF, U, UF> PartialEq<ArchivedRc<U, UF>> for ArchivedRc<T, TF>
where
T: ArchivePointee + PartialEq<U> + ?Sized,
U: ArchivePointee + ?Sized,
{
fn eq(&self, other: &ArchivedRc<U, UF>) -> bool {
self.get().eq(other.get())
}
}
impl<T, TF, U, UF> PartialOrd<ArchivedRc<U, UF>> for ArchivedRc<T, TF>
where
T: ArchivePointee + PartialOrd<U> + ?Sized,
U: ArchivePointee + ?Sized,
{
fn partial_cmp(&self, other: &ArchivedRc<U, UF>) -> Option<cmp::Ordering> {
self.get().partial_cmp(other.get())
}
}
impl<T, F> fmt::Pointer for ArchivedRc<T, F> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Pointer::fmt(&self.0.base(), f)
}
}
pub struct RcResolver<T> {
pos: usize,
metadata_resolver: T,
}
#[repr(u8)]
pub enum ArchivedRcWeak<T: ArchivePointee + ?Sized, F> {
None,
Some(ArchivedRc<T, F>),
}
impl<T: ArchivePointee + ?Sized, F> ArchivedRcWeak<T, F> {
#[inline]
pub fn upgrade(&self) -> Option<&ArchivedRc<T, F>> {
match self {
ArchivedRcWeak::None => None,
ArchivedRcWeak::Some(r) => Some(r),
}
}
#[inline]
pub fn upgrade_pin_mut(self: Pin<&mut Self>) -> Option<Pin<&mut ArchivedRc<T, F>>> {
unsafe {
match self.get_unchecked_mut() {
ArchivedRcWeak::None => None,
ArchivedRcWeak::Some(r) => Some(Pin::new_unchecked(r)),
}
}
}
#[inline]
pub unsafe fn resolve_from_ref<U: ArchiveUnsized<Archived = T> + ?Sized>(
value: Option<&U>,
pos: usize,
resolver: RcWeakResolver<MetadataResolver<U>>,
out: *mut Self,
) {
match resolver {
RcWeakResolver::None => {
let out = out.cast::<ArchivedRcWeakVariantNone>();
ptr::addr_of_mut!((*out).0).write(ArchivedRcWeakTag::None);
}
RcWeakResolver::Some(resolver) => {
let out = out.cast::<ArchivedRcWeakVariantSome<T, F>>();
ptr::addr_of_mut!((*out).0).write(ArchivedRcWeakTag::Some);
let (fp, fo) = out_field!(out.1);
ArchivedRc::resolve_from_ref(value.unwrap(), pos + fp, resolver, fo);
}
}
}
#[inline]
pub fn serialize_from_ref<U, S>(
value: Option<&U>,
serializer: &mut S,
) -> Result<RcWeakResolver<MetadataResolver<U>>, S::Error>
where
U: SerializeUnsized<S, Archived = T> + ?Sized,
S: Serializer + SharedSerializeRegistry + ?Sized,
{
Ok(match value {
None => RcWeakResolver::None,
Some(r) => RcWeakResolver::Some(ArchivedRc::<T, F>::serialize_from_ref(r, serializer)?),
})
}
}
impl<T: ArchivePointee + fmt::Debug + ?Sized, F> fmt::Debug for ArchivedRcWeak<T, F> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "(Weak)")
}
}
pub enum RcWeakResolver<T> {
None,
Some(RcResolver<T>),
}
#[allow(dead_code)]
#[repr(u8)]
enum ArchivedRcWeakTag {
None,
Some,
}
#[repr(C)]
struct ArchivedRcWeakVariantNone(ArchivedRcWeakTag);
#[repr(C)]
struct ArchivedRcWeakVariantSome<T: ArchivePointee + ?Sized, F>(
ArchivedRcWeakTag,
ArchivedRc<T, F>,
);