Enum syn::FnArg

pub enum FnArg {
    Receiver(Receiver),
    Typed(PatType),
}

An argument in a function signature: the n: usize in fn f(n: usize).

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

Variants

Receiver(Receiver)

The self argument of an associated method, whether taken by value or by reference.

Note that self receivers with a specified type, such as self: Box<Self>, are parsed as a FnArg::Typed.

Typed(PatType)

A function argument accepted by pattern and type.

Trait Implementations

impl From<PatType> for FnArg

fn from(e: PatType) -> FnArg

Converts to this type from the input type.

impl From<Receiver> for FnArg

fn from(e: Receiver) -> FnArg

Converts to this type from the input type.

impl Parse for FnArg

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