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Use the FieldOffset struct from the upstream create

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This commit is contained in:
Olivier Goffart 2020-08-24 11:20:38 +02:00
parent 420fc2dc36
commit cbeb982684
8 changed files with 52 additions and 342 deletions
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4
helper_crates/vtable/src/lib.rs
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@ -439,7 +439,7 @@ macro_rules! new_vref {
/// Represent an offset to a field of type mathcing the vtable, within the Base container structure.
#[repr(C)]
pub struct VOffset<Base, T: ?Sized + VTableMeta, PinFlag = NotPinnedFlag> {
pub struct VOffset<Base, T: ?Sized + VTableMeta, PinFlag = NotPinned> {
vtable: &'static T::VTable,
/// Safety invariant: the vtable is valid, and the field at the given offset within Base is
/// matching with the vtable
@ -490,7 +490,7 @@ impl<Base, T: ?Sized + VTableMeta, Flag> VOffset<Base, T, Flag> {
}
}
impl<Base, T: ?Sized + VTableMeta> VOffset<Base, T, PinnedFlag> {
impl<Base, T: ?Sized + VTableMeta> VOffset<Base, T, AllowPin> {
#[inline]
pub fn apply_pin<'a>(self, x: Pin<&'a Base>) -> Pin<VRef<'a, T>> {
let ptr = x.get_ref() as *const Base as *mut u8;