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mod routable_derive;
use routable_derive::{routable_derive_impl, Routable};
use syn::parse_macro_input;

/// Derive macro used to mark an enum as Routable.
///
/// This macro can only be used on enums. Every varient of the macro needs to be marked
/// with the `at` attribute to specify the URL of the route. It generates an implementation of
///  `yew_router::Routable` trait and `const`s for the routes passed which are used with `Route`
/// component.
///
/// # Example
///
/// ```
/// # use yew_router::Routable;
/// #[derive(Debug, Clone, Copy, PartialEq, Routable)]
/// enum Routes {
///     #[at("/")]
///     Home,
///     #[at("/secure")]
///     Secure,
///     #[at("/404")]
///     NotFound,
/// }
/// ```
#[proc_macro_derive(Routable, attributes(at, not_found))]
pub fn routable_derive(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    let input = parse_macro_input!(input as Routable);
    routable_derive_impl(input).into()
}