Enum syn::ReturnType

[−] Show declaration

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

[−] Expand description

Return type of a function signature.

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

Variants

Default

[−] Expand description

Return type is not specified.

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

Type(RArrow, Box<Type>)

[−] Expand description

A particular type is returned.

Methods

impl ReturnType[−]

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

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

Trait Implementations

impl Parse for ReturnType[+]

[+] Show hidden undocumented items

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

impl Clone for ReturnType[+]

[+] Show hidden undocumented items

fn clone(&self) -> ReturnType[−]

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Eq for ReturnType

impl PartialEq<ReturnType> for ReturnType[+]

[+] Show hidden undocumented items

fn eq(&self, other: &ReturnType) -> bool[−]

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ReturnType) -> bool[−]

This method tests for !=.

impl Debug for ReturnType[+]

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fn fmt(&self, f: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

impl Hash for ReturnType[+]

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fn hash<__H: Hasher>(&self, state: &mut __H)[−]

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, [−]

Feeds a slice of this type into the given [Hasher].

impl StructuralPartialEq for ReturnType

impl StructuralEq for ReturnType

impl ToTokens for ReturnType[+]

[+] Show hidden undocumented items

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

Write self to the given TokenStream.

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

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream[−]

Convert self directly into a TokenStream object.