stabilisation

Author: nrc

src/libcore/markers.rs

@@ -29,18 +29,21 @@ use clone::Clone;
 
 
 /// Types able to be transferred across task boundaries.
+#[unstable = "will be overhauled with new lifetime rules; see RFC 458"]
 #[lang="send"]
 pub unsafe trait Send: 'static {
     // empty.
 }
 
 /// Types with a constant size known at compile-time.
+#[stable]
 #[lang="sized"]
 pub trait Sized {
     // Empty.
 }
 
 /// Types that can be copied by simply copying bits (i.e. `memcpy`).
+#[stable]
 #[lang="copy"]
 pub trait Copy {
     // Empty.
@@ -91,6 +94,7 @@ pub trait Copy {
 /// around the value(s) which can be mutated when behind a `&`
 /// reference; not doing this is undefined behaviour (for example,
 /// `transmute`-ing from `&T` to `&mut T` is illegal).
+#[unstable = "will be overhauled with new lifetime rules; see RFC 458"]
 #[lang="sync"]
 pub unsafe trait Sync {
     // Empty
@@ -134,6 +138,7 @@ pub unsafe trait Sync {
 /// `S<T>` is a subtype of `S<U>` if `T` is a subtype of `U`
 /// (for example, `S<&'static int>` is a subtype of `S<&'a int>`
 /// for some lifetime `'a`, but not the other way around).
+#[unstable = "likely to change with new variance strategy"]
 #[lang="covariant_type"]
 #[derive(PartialEq, Eq, PartialOrd, Ord)]
 pub struct CovariantType<Sized? T>;
@@ -182,6 +187,7 @@ impl<Sized? T> Clone for CovariantType<T> {
 /// subtype of `S<U>` if `U` is a subtype of `T`; given that the
 /// function requires arguments of type `T`, it must also accept
 /// arguments of type `U`, hence such a conversion is safe.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="contravariant_type"]
 #[derive(PartialEq, Eq, PartialOrd, Ord)]
 pub struct ContravariantType<T: ?Sized>;
@@ -212,11 +218,14 @@ impl<T: ?Sized> Clone for ContravariantType<T> {
 /// The type system would infer that `value` is only read here and
 /// never written, but in fact `Cell` uses unsafe code to achieve
 /// interior mutability.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="invariant_type"]
 #[derive(PartialEq, Eq, PartialOrd, Ord)]
 pub struct InvariantType<T: ?Sized>;
 
+#[unstable = "likely to change with new variance strategy"]
 impl<T: ?Sized> Copy for InvariantType<T> {}
+#[unstable = "likely to change with new variance strategy"]
 impl<T: ?Sized> Clone for InvariantType<T> {
     fn clone(&self) -> InvariantType<T> { *self }
 }
@@ -237,6 +246,7 @@ impl<T: ?Sized> Clone for InvariantType<T> {
 ///
 /// For more information about variance, refer to this Wikipedia
 /// article <http://en.wikipedia.org/wiki/Variance_%28computer_science%29>.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="covariant_lifetime"]
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub struct CovariantLifetime<'a>;
@@ -253,6 +263,7 @@ pub struct CovariantLifetime<'a>;
 ///
 /// For more information about variance, refer to this Wikipedia
 /// article <http://en.wikipedia.org/wiki/Variance_%28computer_science%29>.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="contravariant_lifetime"]
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub struct ContravariantLifetime<'a>;
@@ -264,6 +275,7 @@ pub struct ContravariantLifetime<'a>;
 /// pointer that is actually a pointer into memory with lifetime `'a`,
 /// and this pointer is itself stored in an inherently mutable
 /// location (such as a `Cell`).
+#[unstable = "likely to change with new variance strategy"]
 #[lang="invariant_lifetime"]
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub struct InvariantLifetime<'a>;
@@ -272,13 +284,15 @@ pub struct InvariantLifetime<'a>;
 /// be safely sent between tasks, even if it is owned. This is
 /// typically embedded in other types, such as `Gc`, to ensure that
 /// their instances remain thread-local.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="no_send_bound"]
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub struct NoSend;
 
 /// A type which is considered "not POD", meaning that it is not
 /// implicitly copyable. This is typically embedded in other types to
 /// ensure that they are never copied, even if they lack a destructor.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="no_copy_bound"]
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord)]
 #[allow(missing_copy_implementations)]
@@ -287,12 +301,14 @@ pub struct NoCopy;
 /// A type which is considered "not sync", meaning that
 /// its contents are not threadsafe, hence they cannot be
 /// shared between tasks.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="no_sync_bound"]
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub struct NoSync;
 
 /// A type which is considered managed by the GC. This is typically
 /// embedded in other types.
+#[unstable = "likely to change with new variance strategy"]
 #[lang="managed_bound"]
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord)]
 #[allow(missing_copy_implementations)]