Enum syn::FnArg

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 Clone for FnArg

fn clone(&self) -> FnArg

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FnArg

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<ArgCaptured> for FnArg

fn from(e: ArgCaptured) -> FnArg

Converts to this type from the input type.

impl From<ArgSelf> for FnArg

fn from(e: ArgSelf) -> FnArg

Converts to this type from the input type.

impl From<ArgSelfRef> for FnArg

fn from(e: ArgSelfRef) -> FnArg

Converts to this type from the input type.

impl From<Pat> for FnArg

fn from(e: Pat) -> FnArg

Converts to this type from the input type.

impl From<Type> for FnArg

fn from(e: Type) -> FnArg

Converts to this type from the input type.

impl Hash for FnArg

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,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Parse for FnArg

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

impl PartialEq<FnArg> for FnArg

fn eq(&self, other: &FnArg) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ToTokens for FnArg

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

Write self to the given TokenStream.

fn into_token_stream(self) -> TokenStreamwhere
    Self: Sized,

Convert self directly into a TokenStream object.

impl Eq for FnArg

impl StructuralEq for FnArg

impl StructuralPartialEq for FnArg