Enum rustc_hir::ConstContext[−][src]

pub enum ConstContext {
    ConstFn,
    Static(Mutability),
    Const,
}
Expand description

The kind of an item that requires const-checking.

Variants

ConstFn
Expand description

A const fn.

Static(Mutability)
Expand description

A static or static mut.

Const
Expand description

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

impl ConstContext[src]

pub fn keyword_name(self) -> &'static str[src]

A description of this const context that can appear between backticks in an error message.

E.g. const or static mut.

Trait Implementations

impl Clone for ConstContext[src]

fn clone(&self) -> ConstContext[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl Debug for ConstContext[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl Display for ConstContext[src]

A colloquial, trivially pluralizable description of this const context for use in error messages.

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl PartialEq<ConstContext> for ConstContext[src]

fn eq(&self, other: &ConstContext) -> bool[src]

This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &ConstContext) -> bool[src]

This method tests for !=.

impl Copy for ConstContext[src]

impl Eq for ConstContext[src]

impl StructuralEq for ConstContext[src]

impl StructuralPartialEq for ConstContext[src]

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

impl<T> Any for T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToString for T where
    T: Display + ?Sized, [src]

pub default fn to_string(&self) -> String[src]

Converts the given value to a String. Read more

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.