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use syn::TypeParam;
use crate::Result;
/// Creates an instance by parsing an individual type_param and its attributes.
pub trait FromTypeParam: Sized {
fn from_type_param(type_param: &TypeParam) -> Result<Self>;
}
impl FromTypeParam for () {
fn from_type_param(_: &TypeParam) -> Result<Self> {
Ok(())
}
}
impl FromTypeParam for TypeParam {
fn from_type_param(type_param: &TypeParam) -> Result<Self> {
Ok(type_param.clone())
}
}
impl FromTypeParam for Vec<syn::Attribute> {
fn from_type_param(type_param: &TypeParam) -> Result<Self> {
Ok(type_param.attrs.clone())
}
}
impl FromTypeParam for syn::Ident {
fn from_type_param(type_param: &TypeParam) -> Result<Self> {
Ok(type_param.ident.clone())
}
}