# ItemImpl in syn - Rust
An impl block providing trait or associated items: `impl<A> Trait for Data<A> { ... }`.

syn

# Struct ItemImpl

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    pub struct ItemImpl {
        pub attrs: Vec<Attribute>,
        pub defaultness: Option<Default>,
        pub unsafety: Option<Unsafe>,
        pub impl_token: Impl,
        pub generics: Generics,
        pub trait_: Option<(Option<Not>, Path, For)>,
        pub self_ty: Box<Type>,
        pub brace_token: Brace,
        pub items: Vec<ImplItem>,
    }

Expand description

An impl block providing trait or associated items: `impl<A> Trait for Data<A> { ... }`.

## Fields§

§ `attrs: Vec<Attribute>` § `defaultness: Option<Default>` § `unsafety: Option<Unsafe>` § `impl_token: Impl` § `generics: Generics` § `trait_: Option<(Option<Not>, Path, For)>`

Trait this impl implements.

§ `self_ty: Box<Type>`

The Self type of the impl.

§ `brace_token: Brace` § `items: Vec<ImplItem>`

## Trait Implementations§

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### impl Clone for ItemImpl

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

Returns a copy of the value. Read more
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#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
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### impl Debug for ItemImpl

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

Formats the value using the given formatter. Read more
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### impl From<ItemImpl> for Item

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#### fn from(e: ItemImpl) -> Item

Converts to this type from the input type.
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### impl Hash for ItemImpl

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#### fn hash<H>(&self, state: &mut H)
where H: Hasher,

Feeds this value into the given `Hasher`. Read more
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#### fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given `Hasher`. Read more
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### impl Parse for ItemImpl

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#### fn parse(input: ParseStream<'_>) -> Result<Self>

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### impl PartialEq for ItemImpl

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#### fn eq(&self, other: &Self) -> bool

Tests for `self` and `other` values to be equal, and is used by `==`.
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#### fn ne(&self, other: &Rhs) -> bool

Tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl ToTokens for ItemImpl

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#### fn to_tokens(&self, tokens: &mut TokenStream)

Write `self` to the given `TokenStream`. Read more
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#### fn to_token_stream(&self) -> TokenStream

Convert `self` directly into a `TokenStream` object. Read more
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#### fn into_token_stream(self) -> TokenStream
where Self: Sized,

Convert `self` directly into a `TokenStream` object. Read more
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### impl Eq for ItemImpl

## Auto Trait Implementations§

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### impl Freeze for ItemImpl

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### impl RefUnwindSafe for ItemImpl

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### impl !Send for ItemImpl

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### impl !Sync for ItemImpl

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### impl Unpin for ItemImpl

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### impl UnwindSafe for ItemImpl

## Blanket Implementations§

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

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

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

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

Mutably borrows from an owned value. Read more
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### impl<T> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dst`. Read more
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### impl<T> From<T> for T

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

Returns the argument unchanged.

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

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#### 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> Spanned for T
where T: Spanned + ?Sized,

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#### fn span(&self) -> Span

Returns a `Span` covering the complete contents of this syntax tree node, or `Span::call_site()` if this node is empty.
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### impl<T> ToOwned for T
where 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 T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### 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 T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.