dto_derive 0.1.1

Derive for automatic mapping DTOs to Entities and vice versa.
Documentation 
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use proc_macro2::TokenStream;
use quote::quote;

use crate::SealedContainer;

pub(crate) fn expand_response(cont: &SealedContainer) -> TokenStream {
    let (impl_generics, ty_generics, where_clause) = cont.generics.split_for_impl();

    let dto = cont.dto_type;
    let entity = cont.entity;
    let mappings: Vec<TokenStream> = cont
        .mapping
        .iter()
        .map(|(l, r)| quote! { #l: entity.#r })
        .collect();

    let result = quote! {
        impl #impl_generics From<#entity> for #dto #ty_generics #where_clause {
            fn from(entity: #entity) -> #dto {
                #dto {
                    #(#mappings),*
                }
            }
        }
    };
    result
}