// Copyright (C) Moondance Labs Ltd.

// This file is part of Tanssi.

// Tanssi is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

// Tanssi is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with Tanssi.  If not, see <http://www.gnu.org/licenses/>

#[doc(hidden)]

pub mod __reexports {

    pub use {

        frame_support::{CloneNoBound, EqNoBound, PartialEqNoBound, RuntimeDebugNoBound},

        scale_info::TypeInfo,

        sp_core::{Decode, Encode, RuntimeDebug},

    };

}

pub use macro_rules_attribute::apply;

#[macro_export]

macro_rules! derive_storage_traits {

    ( $( $tt:tt )* ) => {

        #[derive(

        )]

        $($tt)*

    }

}

/// Macro to define a trait alias for one or othe traits.

/// Thanks to Associated Type Bounds syntax stabilized in Rust 1.79, it can be used to

/// reduce the need to repeat a lot of `<Foo as Bar>::Baz : Traits`.

///

/// Extra parenthesis around bounds allows to easily parse them as-is and not restrict their

/// expressivity.

#[macro_export]

macro_rules! alias {

    (

        $(#[$attr:meta])*

        $vis:vis

        trait

        $alias:ident

        $(< $(

            $tparam:ident

            $( : ( $( $tparam_bound:tt )+ ) )?

        ),+ $(,)? >)?

        : $( $bounds:tt )+

    ) => {

        $(#[$attr])*

        $vis trait $alias $( < $(

            $tparam

            $( : $($tparam_bound)+)?

        ),+ > )?

        : $( $bounds )+

        { }

        impl<__Self, $( $(

            $tparam

            $( : $($tparam_bound)+)?

        ),+ )?>

        $alias $( < $( $tparam ),+ > )?

        for __Self

        where __Self : $( $bounds )+

        { }

    }

}

alias!(

    pub trait ScaleCodec :

        __reexports::Encode +

        __reexports::Decode +

        __reexports::TypeInfo

);

alias!(

    pub trait StorageTraits :

        ::core::fmt::Debug +

        ::core::clone::Clone +

        ::core::cmp::Eq +

        ::core::cmp::PartialEq +

        ScaleCodec

);