Enum syn::ReturnType
source · Expand description
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.
Implementations
sourceimpl ReturnType
impl ReturnType
pub fn without_plus(input: ParseStream<'_>) -> Result<Self>
pub fn parse(input: ParseStream<'_>, allow_plus: bool) -> Result<Self>
Trait Implementations
sourceimpl Clone for ReturnType
impl Clone for ReturnType
sourcefn clone(&self) -> ReturnType
fn clone(&self) -> ReturnType
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresourceimpl Debug for ReturnType
impl Debug for ReturnType
sourceimpl Hash for ReturnType
impl Hash for ReturnType
sourceimpl Parse for ReturnType
impl Parse for ReturnType
fn parse(input: ParseStream<'_>) -> Result<Self>
sourceimpl PartialEq<ReturnType> for ReturnType
impl PartialEq<ReturnType> for ReturnType
sourcefn eq(&self, other: &ReturnType) -> bool
fn eq(&self, other: &ReturnType) -> bool
sourceimpl ToTokens for ReturnType
impl ToTokens for ReturnType
sourcefn to_tokens(&self, tokens: &mut TokenStream)
fn to_tokens(&self, tokens: &mut TokenStream)
sourcefn into_token_stream(self) -> TokenStreamwhere
Self: Sized,
fn into_token_stream(self) -> TokenStreamwhere
Self: Sized,
impl Eq for ReturnType
impl StructuralEq for ReturnType
impl StructuralPartialEq for ReturnType
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
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Spanned for Twhere
T: ToTokens,
impl<T> Spanned for Twhere
T: ToTokens,
sourcefn span(&self) -> Span
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. Read more