Enum rustc_middle::middle::stability::EvalResult

source · [−]
pub enum EvalResult {
    Allow,
    Deny {
        feature: Symbol,
        reason: Option<Symbol>,
        issue: Option<NonZeroU32>,
        suggestion: Option<(Span, String, String, Applicability)>,
        is_soft: bool,
    },
    Unmarked,
}
Expand description

Result of TyCtxt::eval_stability.

Variants

Allow

We can use the item because it is stable or we provided the corresponding feature gate.

Deny

Fields

feature: Symbol
reason: Option<Symbol>
issue: Option<NonZeroU32>
suggestion: Option<(Span, String, String, Applicability)>
is_soft: bool

We cannot use the item because it is unstable and we did not provide the corresponding feature gate.

Unmarked

The item does not have the #[stable] or #[unstable] marker assigned.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.

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: 80 bytes

Size for each variant:

  • Allow: 0 bytes
  • Deny: 79 bytes
  • Unmarked: 0 bytes