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.

Trait Implementations

impl Synom for ReturnType

fn parse(i: Cursor) -> PResult<Self>

fn description() -> Option<&'static str>

A short name of the type being parsed.

impl ToTokens for ReturnType

fn to_tokens(&self, tokens: &mut Tokens)

Write self to the given Tokens.

fn into_tokens(self) -> Tokens

Convert self directly into a Tokens object.

impl Clone for ReturnType

fn clone(&self) -> ReturnType

Returns a copy of the value.

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

Performs copy-assignment from source.