Struct WrapperMatch 

pub struct WrapperMatch<'a> {
    pub generic_args: &'a Punctuated<GenericArgument, Comma>,
}

The generic argument list of a matched wrapper type.

Returned by try_extract_wrapper and extract_wrapper.

Fields

generic_args: &'a Punctuated<GenericArgument, Comma>

Implementations

impl<'a> WrapperMatch<'a>

pub fn first_type(&self) -> Option<&'a Type>

The first type argument — T in Wrapper<T, ...>.

pub fn second_type(&self) -> Option<&'a Type>

The second type argument — E in Result<T, E>.

pub fn nth_type(&self, n: usize) -> Option<&'a Type>

The nth type argument (0-indexed).

pub fn all_types(&self) -> Vec<&'a Type>

All type arguments as a Vec.

Trait Implementations

impl Debug for WrapperMatch<'_>

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

Formats the value using the given formatter.