Enum syn::FnArg
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pub enum FnArg { SelfRef(ArgSelfRef), SelfValue(ArgSelf), Captured(ArgCaptured), Inferred(Pat), Ignored(Type), }
An argument in a function signature: the n: usize
in fn f(n: usize)
.
This type is available if Syn is built with the "full"
feature.
Syntax tree enum
This type is a syntax tree enum.
Variants
SelfRef(ArgSelfRef)
Self captured by reference in a function signature: &self
or &mut self
.
This type is available if Syn is built with the "full"
feature.
SelfValue(ArgSelf)
Self captured by value in a function signature: self
or mut self
.
This type is available if Syn is built with the "full"
feature.
Captured(ArgCaptured)
An explicitly typed pattern captured by a function signature.
This type is available if Syn is built with the "full"
feature.
Inferred(Pat)
A pattern whose type is inferred captured by a function signature.
Ignored(Type)
A type not bound to any pattern in a function signature.
Trait Implementations
impl Synom for FnArg
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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 Debug for FnArg
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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 FnArg
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impl PartialEq for FnArg
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fn eq(&self, __arg_0: &FnArg) -> 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: &FnArg) -> bool
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This method tests for !=
.
impl Hash for FnArg
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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,
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H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Clone for FnArg
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fn clone(&self) -> FnArg
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl From<ArgSelfRef> for FnArg
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fn from(e: ArgSelfRef) -> FnArg
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Performs the conversion.
impl From<ArgSelf> for FnArg
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impl From<ArgCaptured> for FnArg
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fn from(e: ArgCaptured) -> FnArg
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Performs the conversion.
impl From<Pat> for FnArg
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impl From<Type> for FnArg
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impl ToTokens for FnArg
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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