// Copyright 2018 Parity Technologies (UK) Ltd.
// This file is part of Substrate.

// Substrate 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.

// Substrate 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 Substrate.  If not, see <http://www.gnu.org/licenses/>.

#[doc(hidden)]
pub mod imp {
	pub use std::cell::RefCell;
	pub use std::thread::LocalKey;
	pub use std::mem::transmute;
	pub use std::mem::replace;
	pub use std::marker::PhantomData;
}

#[doc(hidden)]
#[macro_export]
macro_rules! thread_local_impl {
	($(#[$attr:meta])* static $name:ident: $t:ty = $init:expr) => (
		thread_local!($(#[$attr])* static $name: $t = $init);
	);
}