[−][src]Enum syn::ReturnType

pub enum ReturnType {
    Default,
    Type(RArrow, Box<Type>),
}

Return type of a function signature.

This type is available if Syn is built with the "derive" or "full" feature.

Variants

Default

Return type is not specified.

Functions default to () and closures default to type inference.

Type(RArrow, Box<Type>)

A particular type is returned.

Methods

`impl ReturnType`[src]

`pub fn without_plus(input: ParseStream) -> Result<Self>`[src]

`pub fn parse(input: ParseStream, allow_plus: bool) -> Result<Self>`[src]

Trait Implementations

`impl Clone for ReturnType`[src]

`fn clone(&self) -> ReturnType`[src]

`fn clone_from(&mut self, source: &Self)`1.0.0[src]

`impl Parse for ReturnType`[src]

`fn parse(input: ParseStream) -> Result<Self>`[src]

`impl ToTokens for ReturnType`[src]

`fn to_tokens(&self, tokens: &mut TokenStream)`[src]

`fn to_token_stream(&self) -> TokenStream`[src]

`fn into_token_stream(self) -> TokenStream`[src]

Auto Trait Implementations

`impl !RefUnwindSafe for ReturnType`

`impl !Send for ReturnType`

`impl !Sync for ReturnType`

`impl Unpin for ReturnType`

`impl UnwindSafe for ReturnType`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> From<T> for T`[src]

`fn from(t: T) -> T`[src]

`impl<T, U> Into for T where U: From<T>,` [src]

`fn into(self) -> U`[src]

`impl<T> Spanned for T where T: Spanned + ?Sized,` [src]

`fn span(&Self) -> Span`[src]

`impl<T> ToOwned for T where T: Clone,` [src]

`type Owned = T`

The resulting type after obtaining ownership.

`fn to_owned(&self) -> T`[src]

`fn clone_into(&self, target: &mut T)`[src]

`impl<T, U> TryFrom for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

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

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

`fn try_into(self) -> Result<U, >::Error>`[src]

[−][src]Enum syn::ReturnType

Variants

Methods

impl ReturnType[src]

pub fn without_plus(input: ParseStream) -> Result<Self>[src]

pub fn parse(input: ParseStream, allow_plus: bool) -> Result<Self>[src]

Trait Implementations

impl Clone for ReturnType[src]

fn clone(&self) -> ReturnType[src]

fn clone_from(&mut self, source: &Self)1.0.0[src]

impl Parse for ReturnType[src]

fn parse(input: ParseStream) -> Result<Self>[src]

impl ToTokens for ReturnType[src]

fn to_tokens(&self, tokens: &mut TokenStream)[src]

fn to_token_stream(&self) -> TokenStream[src]

fn into_token_stream(self) -> TokenStream[src]

Auto Trait Implementations

impl !RefUnwindSafe for ReturnType

impl !Send for ReturnType

impl !Sync for ReturnType

impl Unpin for ReturnType

impl UnwindSafe for ReturnType

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized, [src]

fn type_id(&self) -> TypeId[src]

impl<T> Borrow<T> for T where T: ?Sized, [src]

fn borrow(&self) -> &T[src]

impl<T> BorrowMut<T> for T where T: ?Sized, [src]

fn borrow_mut(&mut self) -> &mut T[src]

impl<T> From<T> for T[src]

fn from(t: T) -> T[src]

impl<T, U> Into<U> for T where U: From<T>, [src]

fn into(self) -> U[src]

impl<T> Spanned for T where T: Spanned + ?Sized, [src]

fn span(&Self) -> Span[src]

impl<T> ToOwned for T where T: Clone, [src]

type Owned = T

fn to_owned(&self) -> T[src]

fn clone_into(&self, target: &mut T)[src]

impl<T, U> TryFrom<U> for T where U: Into<T>, [src]

type Error = Infallible

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

impl<T, U> TryInto<U> for T where U: TryFrom<T>, [src]

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

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