# DataEnum in syn - Rust
An enum input to a `proc_macro_derive` macro.
Keywords: rust, rustlang, rust-lang, DataEnum

# Struct syn::DataEnum

source · [−]

    pub struct DataEnum {
        pub enum_token: Enum,
        pub brace_token: Brace,
        pub variants: Punctuated<Variant, Comma>,
    }

Expand description

An enum input to a `proc_macro_derive` macro.

This type is available only if Syn is built with the `"derive"` feature.

## Fields

`enum_token: Enum` `brace_token: Brace` `variants: Punctuated<Variant, Comma>`

## Trait Implementations

source

### impl Clone for DataEnum

source

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

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 From<DataEnum> for Data

source

#### fn from(e: DataEnum) -> Data

Converts to this type from the input type.

## Auto Trait Implementations

### impl RefUnwindSafe for DataEnum

### impl !Send for DataEnum

### impl !Sync for DataEnum

### impl Unpin for DataEnum

### impl UnwindSafe for DataEnum

## Blanket Implementations

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,

const: unstable · source

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

Immutably borrows from an owned value. Read more

source

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

source

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

const: unstable · source

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

Returns the argument unchanged.

source

### impl<T, U> Into<U> for T where
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.

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.

const: unstable · 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.

const: unstable · source

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

Performs the conversion.