Enum syn::ReturnType
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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
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pub fn without_plus(i: Cursor) -> PResult<Self>
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Trait Implementations
impl Synom for ReturnType
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fn parse(i: Cursor) -> PResult<Self>
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fn description() -> Option<&'static str>
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A short name of the type being parsed. Read more
impl ToTokens for ReturnType
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fn to_tokens(&self, tokens: &mut TokenStream)
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Write self
to the given TokenStream
. Read more
fn into_token_stream(self) -> TokenStream
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Convert self
directly into a TokenStream
object. Read more
impl Debug for ReturnType
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl Eq for ReturnType
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impl PartialEq for ReturnType
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fn eq(&self, __arg_0: &ReturnType) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &ReturnType) -> bool
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This method tests for !=
.
impl Hash for ReturnType
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fn hash<__H: Hasher>(&self, __arg_0: &mut __H)
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Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Clone for ReturnType
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fn clone(&self) -> ReturnType
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more