Function add_field

flow-derive/src/utils.rs:79–86

(item: &mut ItemStruct, field: TokenStream)

}

pub fn add_field(item: &mut ItemStruct, field: TokenStream) -> Result<()> {
    match item.fields {
        Fields::Named(ref mut fields) => fields.named.push(Field::parse_named.parse2(field)?),
        Fields::Unnamed(ref mut fields) => fields.unnamed.push(Field::parse_unnamed.parse2(field)?),
        _ => unreachable!(),
    }
    Ok(())
}

pub type ExtractParams<'a> = (&'a Ident, &'a Option<Ident>, &'a Type);