Enum rustc_hir::ConstContext
source · pub enum ConstContext {
ConstFn,
Static(Mutability),
Const {
inline: bool,
},
}
Expand description
The kind of an item that requires const-checking.
Variants§
ConstFn
A const fn
.
Static(Mutability)
A static
or static mut
.
Const
A const
, associated const
, or other const context.
Other contexts include:
- Array length expressions
- Enum discriminants
- Const generics
For the most part, other contexts are treated just like a regular const
, so they are
lumped into the same category.
Implementations§
source§impl ConstContext
impl ConstContext
sourcepub fn keyword_name(self) -> &'static str
pub fn keyword_name(self) -> &'static str
A description of this const context that can appear between backticks in an error message.
E.g. const
or static mut
.
Trait Implementations§
source§impl Clone for ConstContext
impl Clone for ConstContext
source§fn clone(&self) -> ConstContext
fn clone(&self) -> ConstContext
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ConstContext
impl Debug for ConstContext
source§impl Display for ConstContext
impl Display for ConstContext
A colloquial, trivially pluralizable description of this const context for use in error messages.
source§impl PartialEq<ConstContext> for ConstContext
impl PartialEq<ConstContext> for ConstContext
source§fn eq(&self, other: &ConstContext) -> bool
fn eq(&self, other: &ConstContext) -> bool
self
and other
values to be equal, and is used
by ==
.impl Copy for ConstContext
impl Eq for ConstContext
impl StructuralEq for ConstContext
impl StructuralPartialEq for ConstContext
Auto Trait Implementations§
impl RefUnwindSafe for ConstContext
impl Send for ConstContext
impl Sync for ConstContext
impl Unpin for ConstContext
impl UnwindSafe for ConstContext
Blanket Implementations§
source§impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,
fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 2 bytes
Size for each variant:
ConstFn
: 0 bytesStatic
: 1 byteConst
: 1 byte