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use crate::container::*;
use proc_macro2::Span;
use quote::quote;
use syn::{Data, Ident};

pub fn derive_ber_set(s: synstructure::Structure) -> proc_macro2::TokenStream {
    let ast = s.ast();

    let container = match &ast.data {
        Data::Struct(ds) => Container::from_datastruct(ds, ast, ContainerType::Set),
        _ => panic!("Unsupported type, cannot derive"),
    };

    let debug_derive = ast.attrs.iter().any(|attr| {
        attr.meta
            .path()
            .is_ident(&Ident::new("debug_derive", Span::call_site()))
    });

    let impl_tryfrom = container.gen_tryfrom();
    let impl_tagged = container.gen_tagged();
    let ts = s.gen_impl(quote! {
        extern crate asn1_rs;

        #impl_tryfrom
        #impl_tagged
    });
    if debug_derive {
        eprintln!("{}", ts);
    }
    ts
}

pub fn derive_der_set(s: synstructure::Structure) -> proc_macro2::TokenStream {
    let ast = s.ast();

    let container = match &ast.data {
        Data::Struct(ds) => Container::from_datastruct(ds, ast, ContainerType::Set),
        _ => panic!("Unsupported type, cannot derive"),
    };

    let debug_derive = ast.attrs.iter().any(|attr| {
        attr.meta
            .path()
            .is_ident(&Ident::new("debug_derive", Span::call_site()))
    });
    let impl_tryfrom = container.gen_tryfrom();
    let impl_tagged = container.gen_tagged();
    let impl_checkconstraints = container.gen_checkconstraints();
    let impl_fromder = container.gen_fromder();
    let ts = s.gen_impl(quote! {
        extern crate asn1_rs;

        #impl_tryfrom
        #impl_tagged
        #impl_checkconstraints
        #impl_fromder
    });
    if debug_derive {
        eprintln!("{}", ts);
    }
    ts
}