Enum rustc_hir::ConstContext

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

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

impl ConstContext

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

impl Clone for ConstContext

pub fn clone(&self) -> ConstContext

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ConstContext

impl Debug for ConstContext

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

Formats the value using the given formatter.

impl Display for ConstContext

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

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

Formats the value using the given formatter.

impl Eq for ConstContext

impl PartialEq<ConstContext> for ConstContext

pub fn eq(&self, other: &ConstContext) -> bool

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

pub fn ne(&self, other: &ConstContext) -> bool

This method tests for !=.

impl StructuralEq for ConstContext

impl StructuralPartialEq for ConstContext