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use crate::utils::{add_where_clauses_for_new_ident, MultiFieldData, RefType};
use proc_macro2::TokenStream;
use quote::quote;
use syn::{Generics, Ident};
pub fn generics_and_exprs(
multi_field_data: MultiFieldData,
scalar_ident: &Ident,
type_where_clauses: TokenStream,
ref_type: RefType,
) -> (Generics, Vec<TokenStream>) {
let MultiFieldData {
fields,
casted_traits,
members,
method_ident,
..
} = multi_field_data;
let reference = ref_type.reference();
let exprs: Vec<_> = casted_traits
.iter()
.zip(members)
.map(|(casted_trait, member)| {
quote! { #casted_trait::#method_ident(#reference #member, rhs) }
})
.collect();
let new_generics = add_where_clauses_for_new_ident(
&multi_field_data.state.input.generics,
&fields,
scalar_ident,
type_where_clauses,
true,
);
(new_generics, exprs)
}