Enum rustc_hir::hir::ConstContext
source · pub enum ConstContext {
ConstFn,
Static(Mutability),
Const,
}
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
sourceimpl 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
sourceimpl Clone for ConstContext
impl Clone for ConstContext
sourcefn clone(&self) -> ConstContext
fn clone(&self) -> ConstContext
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresourceimpl Debug for ConstContext
impl Debug for ConstContext
sourceimpl Display for ConstContext
impl Display for ConstContext
A colloquial, trivially pluralizable description of this const context for use in error messages.
sourceimpl PartialEq<ConstContext> for ConstContext
impl PartialEq<ConstContext> for ConstContext
sourcefn eq(&self, other: &ConstContext) -> bool
fn eq(&self, other: &ConstContext) -> bool
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
sourceimpl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
fn allocate_on(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]impl Read for &[u8]impl Write for &mut [u8]
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn 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: 1 byte
Size for each variant:
ConstFn
: 0 bytesStatic
: 1 byteConst
: 0 bytes