Enum rustc_ast::ast::Extern

source · 
pub enum Extern {
    None,
    Implicit(Span),
    Explicit(StrLit, Span),
}
Expand description

extern qualifier on a function item or function type.

Variants§

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None

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Implicit(Span)

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Explicit(StrLit, Span)

Implementations§

Trait Implementations§

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
source§

impl<__D: Decoder> Decodable<__D> for Extern

source§

impl<__E: Encoder> Encodable<__E> for Extern

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 resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
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: 32 bytes

Size for each variant:

  • None: 0 bytes
  • Implicit: 8 bytes
  • Explicit: 32 bytes