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Code Issues Releases Wiki Activity

document all remaining unsafe usages (#1642)

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adds some debug assertions where appropriate
This commit is contained in:
Rob Ede
2020-09-03 10:00:24 +01:00
committed by GitHub
parent 4e321595bc
commit 9a9d4b182e
7 changed files with 84 additions and 24 deletions
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5
actix-http/src/macros.rs
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@ -38,7 +38,7 @@ macro_rules! downcast {
/// Downcasts generic body to a specific type.
pub fn downcast_ref<T: $name + 'static>(&self) -> Option<&T> {
if self.__private_get_type_id__().0 == std::any::TypeId::of::<T>() {
// Safety: external crates cannot override the default
// SAFETY: external crates cannot override the default
// implementation of `__private_get_type_id__`, since
// it requires returning a private type. We can therefore
// rely on the returned `TypeId`, which ensures that this
@ -48,10 +48,11 @@ macro_rules! downcast {
None
}
}
/// Downcasts a generic body to a mutable specific type.
pub fn downcast_mut<T: $name + 'static>(&mut self) -> Option<&mut T> {
if self.__private_get_type_id__().0 == std::any::TypeId::of::<T>() {
// Safety: external crates cannot override the default
// SAFETY: external crates cannot override the default
// implementation of `__private_get_type_id__`, since
// it requires returning a private type. We can therefore
// rely on the returned `TypeId`, which ensures that this