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use proc_macro::TokenStream;
use quote::quote;

use self::tl_read::*;
use self::tl_write::*;

mod bound;
mod dummy;
mod internals;
mod tl_read;
mod tl_write;

#[derive(Copy, Clone, Eq, PartialEq)]
enum Derive {
    Write,
    Read,
}

#[proc_macro_derive(TlWrite, attributes(tl))]
pub fn derive_tl_write(input: TokenStream) -> TokenStream {
    let input = syn::parse_macro_input!(input as syn::DeriveInput);
    impl_derive_tl_write(input)
        .unwrap_or_else(to_compile_errors)
        .into()
}

#[proc_macro_derive(TlRead, attributes(tl))]
pub fn derive_tl_read(input: TokenStream) -> TokenStream {
    let input = syn::parse_macro_input!(input as syn::DeriveInput);
    impl_derive_tl_read(input)
        .unwrap_or_else(to_compile_errors)
        .into()
}

fn to_compile_errors(errors: Vec<syn::Error>) -> proc_macro2::TokenStream {
    let compile_errors = errors.iter().map(syn::Error::to_compile_error);
    quote!(#(#compile_errors)*)
}