darling_core/
from_generic_param.rs

1use crate::Result;
2
3/// Creates an instance by parsing a specific `syn::GenericParam`.
4/// This can be a type param, a lifetime, or a const param.
5pub trait FromGenericParam: Sized {
6    fn from_generic_param(param: &syn::GenericParam) -> Result<Self>;
7}
8
9impl FromGenericParam for () {
10    fn from_generic_param(_param: &syn::GenericParam) -> Result<Self> {
11        Ok(())
12    }
13}
14
15impl FromGenericParam for syn::GenericParam {
16    fn from_generic_param(param: &syn::GenericParam) -> Result<Self> {
17        Ok(param.clone())
18    }
19}