# Struct rustc_ast::ast::FieldDef

source ·

    pub struct FieldDef {
        pub attrs: AttrVec,
        pub id: NodeId,
        pub span: Span,
        pub vis: Visibility,
        pub ident: Option<Ident>,
        pub ty: P<Ty>,
        pub is_placeholder: bool,
    }

Expand description

Field definition in a struct, variant or union.

E.g., `bar: usize` as in `struct Foo { bar: usize }`.

## Fields§

§`attrs: AttrVec`§`id: NodeId`§`span: Span`§`vis: Visibility`§`ident: Option<Ident>`§`ty: P<Ty>`§`is_placeholder: bool`

## Trait Implementations§

source§

### impl Clone for FieldDef

source§

#### fn clone(&self) -> FieldDef

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
source§

### impl Debug for FieldDef

source§

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

Formats the value using the given formatter. Read more
source§

### impl<__D: SpanDecoder> Decodable<__D> for FieldDef

source§

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

source§

### impl<__E: SpanEncoder> Encodable<__E> for FieldDef

source§

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

source§

### impl HasAttrs for FieldDef

source§

#### const SUPPORTS_CUSTOM_INNER_ATTRS: bool = false

This is `true` if this `HasAttrs` might support ‘custom’ (proc-macro) inner attributes. Attributes like `#![cfg]` and `#![cfg_attr]` are not considered ‘custom’ attributes. Read more
source§

#### fn attrs(&self) -> &[Attribute]

source§

#### fn visit_attrs(&mut self, f: impl FnOnce(&mut AttrVec))

source§

### impl HasNodeId for FieldDef

source§

#### fn node_id(&self) -> NodeId

source§

#### fn node_id_mut(&mut self) -> &mut NodeId

source§

### impl HasTokens for FieldDef

source§

#### fn tokens(&self) -> Option<&LazyAttrTokenStream>

source§

#### fn tokens_mut(&mut self) -> Option<&mut Option<LazyAttrTokenStream>>

## Auto Trait Implementations§

§

### impl DynSend for FieldDef

§

### impl DynSync for FieldDef

§

### impl Freeze for FieldDef

§

### impl !RefUnwindSafe for FieldDef

§

### impl !Send for FieldDef

§

### impl !Sync for FieldDef

§

### impl Unpin for FieldDef

§

### impl !UnwindSafe for FieldDef

## Blanket Implementations§

source§

### impl<T> Aligned for T

source§

#### const ALIGN: Alignment = _

Alignment of `Self`.
source§

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

source§

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
source§

### impl<T> Borrow<T> for T
where T: ?Sized,

source§

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

### impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

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

Mutably borrows from an owned value. Read more
source§

### impl<T> From<T> for T

source§

#### fn from(t: T) -> T

Returns the argument unchanged.

source§

### impl<T> Instrument for T

source§

#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
source§

#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
source§

### impl<T, U> Into<U> for T
where U: From<T>,

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.

§

### impl<T> Pointable for T

§

#### const ALIGN: usize = _

The alignment of pointer.
§

#### type Init = T

The type for initializers.
§

#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
§

#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
§

#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
§

#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
source§

### impl<T> Same for T

§

#### type Output = T

Should always be `Self`
source§

### impl<T> ToOwned for T
where T: Clone,

§

#### type Owned = T

The resulting type after obtaining ownership.
source§

#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

### impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

#### type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

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

The type returned in the event of a conversion error.
source§

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

### impl<T> WithSubscriber for T

source§

#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
source§

#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
source§

### impl<'a, T> Captures<'a> for T
where T: ?Sized,

## 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