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author | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
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committer | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
commit | a990de90fe41456a23e58bd087d2f107d321f3a1 (patch) | |
tree | 15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/syn/src/drops.rs | |
parent | 3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff) | |
download | fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip |
Deleted vendor folder
Diffstat (limited to 'vendor/syn/src/drops.rs')
-rw-r--r-- | vendor/syn/src/drops.rs | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/vendor/syn/src/drops.rs b/vendor/syn/src/drops.rs deleted file mode 100644 index 89b42d8..0000000 --- a/vendor/syn/src/drops.rs +++ /dev/null @@ -1,58 +0,0 @@ -use std::iter; -use std::mem::ManuallyDrop; -use std::ops::{Deref, DerefMut}; -use std::option; -use std::slice; - -#[repr(transparent)] -pub(crate) struct NoDrop<T: ?Sized>(ManuallyDrop<T>); - -impl<T> NoDrop<T> { - pub(crate) fn new(value: T) -> Self - where - T: TrivialDrop, - { - NoDrop(ManuallyDrop::new(value)) - } -} - -impl<T: ?Sized> Deref for NoDrop<T> { - type Target = T; - fn deref(&self) -> &Self::Target { - &self.0 - } -} - -impl<T: ?Sized> DerefMut for NoDrop<T> { - fn deref_mut(&mut self) -> &mut Self::Target { - &mut self.0 - } -} - -pub(crate) trait TrivialDrop {} - -impl<T> TrivialDrop for iter::Empty<T> {} -impl<'a, T> TrivialDrop for slice::Iter<'a, T> {} -impl<'a, T> TrivialDrop for slice::IterMut<'a, T> {} -impl<'a, T> TrivialDrop for option::IntoIter<&'a T> {} -impl<'a, T> TrivialDrop for option::IntoIter<&'a mut T> {} - -#[test] -fn test_needs_drop() { - use std::mem::needs_drop; - - struct NeedsDrop; - - impl Drop for NeedsDrop { - fn drop(&mut self) {} - } - - assert!(needs_drop::<NeedsDrop>()); - - // Test each of the types with a handwritten TrivialDrop impl above. - assert!(!needs_drop::<iter::Empty<NeedsDrop>>()); - assert!(!needs_drop::<slice::Iter<NeedsDrop>>()); - assert!(!needs_drop::<slice::IterMut<NeedsDrop>>()); - assert!(!needs_drop::<option::IntoIter<&NeedsDrop>>()); - assert!(!needs_drop::<option::IntoIter<&mut NeedsDrop>>()); -} |