Struct rustc_ast::ast::FnHeader

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pub struct FnHeader {
    pub unsafety: Unsafe,
    pub asyncness: Async,
    pub constness: Const,
    pub ext: Extern,
}
Expand description

A function header.

All the information between the visibility and the name of the function is included in this struct (e.g., async unsafe fn or const extern "C" fn).

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§unsafety: Unsafe

The unsafe keyword, if any

§asyncness: Async

The async keyword, if any

§constness: Const

The const keyword, if any

§ext: Extern

The extern keyword and corresponding ABI string, if any

Implementations§

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impl FnHeader

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pub fn has_qualifiers(&self) -> bool

Does this function header have any qualifiers or is it empty?

Trait Implementations§

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impl Clone for FnHeader

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fn clone(&self) -> FnHeader

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
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impl Debug for FnHeader

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

Formats the value using the given formatter. Read more
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impl<__D: Decoder> Decodable<__D> for FnHeader

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fn decode(__decoder: &mut __D) -> Self

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impl Default for FnHeader

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fn default() -> FnHeader

Returns the “default value” for a type. Read more
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impl<__E: Encoder> Encodable<__E> for FnHeader

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fn encode(&self, __encoder: &mut __E)

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impl Copy for FnHeader

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere
    T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for Twhere
    T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::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: 72 bytes