// Copyright 2017-2018 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/>.

//! Shareable Substrate types.

#![warn(missing_docs)]

#![cfg_attr(not(feature = "std"), no_std)]
#![cfg_attr(not(feature = "std"), feature(alloc))]

#[macro_use]
extern crate crunchy;
#[macro_use]
extern crate fixed_hash;
#[macro_use]
extern crate uint as uint_crate;
#[macro_use]
extern crate parity_codec_derive;

extern crate rustc_hex;
extern crate byteorder;
extern crate parity_codec as codec;

#[cfg(feature = "std")]
extern crate serde;
#[cfg(feature = "std")]
extern crate twox_hash;

#[cfg(feature = "std")]
extern crate blake2_rfc;
#[cfg(feature = "std")]
extern crate ring;
#[cfg(feature = "std")]
extern crate base58;
#[cfg(feature = "std")]
extern crate untrusted;
#[cfg(test)]
#[macro_use]
extern crate hex_literal;

#[cfg(feature = "std")]
#[macro_use]
extern crate serde_derive;
#[cfg(feature = "std")]
extern crate core;
#[cfg(feature = "std")]
extern crate wasmi;
extern crate hash_db;
extern crate hash256_std_hasher;

extern crate sr_std as rstd;

#[cfg(test)]
extern crate substrate_serializer;

#[cfg(test)]
extern crate heapsize;

#[cfg(test)]
#[macro_use]
extern crate pretty_assertions;

#[macro_export]
macro_rules! map {
	($( $name:expr => $value:expr ),*) => (
		vec![ $( ( $name, $value ) ),* ].into_iter().collect()
	)
}

use rstd::prelude::*;
use rstd::ops::Deref;

#[cfg(feature = "std")]
pub mod bytes;
#[cfg(feature = "std")]
pub mod hashing;
#[cfg(feature = "std")]
pub use hashing::{blake2_256, twox_128, twox_256};
#[cfg(feature = "std")]
pub mod hexdisplay;
#[cfg(feature = "std")]
pub mod ed25519;

pub mod u32_trait;

pub mod hash;
mod hasher;
pub mod sandbox;
pub mod storage;
pub mod uint;
mod authority_id;
mod changes_trie;

#[cfg(test)]
mod tests;

pub use self::hash::{H160, H256, H512, convert_hash};
pub use self::uint::U256;
pub use authority_id::AuthorityId;
pub use changes_trie::ChangesTrieConfiguration;

pub use hash_db::Hasher;
// Switch back to Blake after PoC-3 is out
// pub use self::hasher::blake::BlakeHasher;
pub use self::hasher::blake2::Blake2Hasher;

/// A 512-bit value interpreted as a signature.
pub type Signature = hash::H512;

/// Hex-serialised shim for `Vec<u8>`.
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize, Debug, Hash, PartialOrd, Ord))]
pub struct Bytes(#[cfg_attr(feature = "std", serde(with="bytes"))] pub Vec<u8>);

impl From<Vec<u8>> for Bytes {
	fn from(s: Vec<u8>) -> Self { Bytes(s) }
}

impl From<OpaqueMetadata> for Bytes {
	fn from(s: OpaqueMetadata) -> Self { Bytes(s.0) }
}

impl Deref for Bytes {
	type Target = [u8];
	fn deref(&self) -> &[u8] { &self.0[..] }
}

/// Stores the encoded `RuntimeMetadata` for the native side as opaque type.
#[derive(Encode, Decode)]
pub struct OpaqueMetadata(Vec<u8>);

impl OpaqueMetadata {
	/// Creates a new instance with the given metadata blob.
	pub fn new(metadata: Vec<u8>) -> Self {
		OpaqueMetadata(metadata)
	}
}

impl rstd::ops::Deref for OpaqueMetadata {
	type Target = Vec<u8>;

	fn deref(&self) -> &Self::Target {
		&self.0
	}
}