Enum rustc_feature::builtin_attrs::AttributeGate

pub enum AttributeGate {
    Gated(Stability, Symbol, &'static str, fn(_: &Features) -> bool),
    Ungated,
}

Variants

Gated(Stability, Symbol, &'static str, fn(_: &Features) -> bool)

Is gated by a given feature gate, reason and function to check if enabled

Tuple Fields of Gated

0: Stability1: Symbol2: &'static str3: fn(_: &Features) -> bool

Ungated

Ungated attribute, can be used on all release channels

Implementations

impl AttributeGate

fn is_deprecated(&self) -> bool

Trait Implementations

impl Clone for AttributeGate

fn clone(&self) -> AttributeGate

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AttributeGate

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

Formats the value using the given formatter.

impl Copy for AttributeGate

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: 64 bytes

Size for each variant:

• Gated: 60 bytes
• Ungated: 0 bytes