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#![recursion_limit = "192"]

extern crate proc_macro;
extern crate packed_struct;


extern crate syn;
#[macro_use]
extern crate quote;

use proc_macro::TokenStream;


mod pack;
mod pack_codegen;
mod pack_codegen_docs;
mod pack_parse;
mod pack_parse_attributes;

mod primitive_enum;
mod common;
mod utils;

#[proc_macro_derive(PackedStruct, attributes(packed_struct, packed_field))]
pub fn derive_packable_bytes(input: TokenStream) -> TokenStream {
    let ast = syn::parse_macro_input(&input.to_string()).unwrap();
    let parsed = pack_parse::parse_struct(&ast);
    let pack = pack_codegen::derive_pack(&parsed);

    quote!(#pack).to_string().parse().unwrap()        
}

#[proc_macro_derive(PrimitiveEnum_u8)]
pub fn derive_primitive_enum_full(input: TokenStream) -> TokenStream {
    let input = match syn::parse_derive_input(&input.to_string()) {
        Ok(tokens) => tokens,
        Err(msg) => panic!("Internal error from `syn`: {}", msg),
    };

    let prim = primitive_enum::derive(&input, syn::parse_type("u8").unwrap());

    quote!(#prim).to_string().parse().unwrap()
}