//! The available formats to convert
use super::*;
use std::io;
use object::Object;

/// Config for the encode/decode
pub struct Config;

/// A directive for a format on how to encode and decode objects.
#[derive(Clone, Copy)]
pub struct FormatDirective
{
    encode: fn (&Config, &mut dyn io::Write, &Object) -> io::Result<usize>,
    decode: fn (&Config, &mut dyn io::Read) -> io::Result<(Object, usize)>,
}

macro_rules! directive {
    ($($name:literal),+ => $encode:expr, $decode:expr) => {
	(&[$($name),+], FormatDirective {
	    encode: $encode,
	    decode: $decode,
	})
    };
}

/// All format directives and their name(s)
pub static FORMATS: &[(&'static [&'static str], FormatDirective)] = &[
    directive!("json", "js", "javascript" => |_, _, _| todo!(), |_, _| todo!()),
    directive!("s-expression", "sexpr", "lisp", "lexpr" => |_, _, _| todo!(), |_, _| todo!()),
    directive!("cbor" => |_, _, _| todo!(), |_, _| todo!()),
];