feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

pezkuwi/runtime/teyrchains/src/origin.rs

@@ -0,0 +1,76 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// This file is part of Pezkuwi.
+
+// Pezkuwi 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.
+
+// Pezkuwi 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 Pezkuwi.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Declaration of the teyrchain specific origin and a pallet that hosts it.
+
+use core::result;
+use pezkuwi_primitives::Id as ParaId;
+use sp_runtime::traits::BadOrigin;
+
+pub use pallet::*;
+
+/// Ensure that the origin `o` represents a teyrchain.
+/// Returns `Ok` with the teyrchain ID that effected the extrinsic or an `Err` otherwise.
+pub fn ensure_teyrchain<OuterOrigin>(o: OuterOrigin) -> result::Result<ParaId, BadOrigin>
+where
+	OuterOrigin: Into<result::Result<Origin, OuterOrigin>>,
+{
+	match o.into() {
+		Ok(Origin::Teyrchain(id)) => Ok(id),
+		_ => Err(BadOrigin),
+	}
+}
+
+/// There is no way to register an origin type in `construct_runtime` without a pallet the origin
+/// belongs to.
+///
+/// This module fulfills only the single purpose of housing the `Origin` in `construct_runtime`.
+// ideally, though, the `construct_runtime` should support a free-standing origin.
+#[frame_support::pallet]
+pub mod pallet {
+	use super::*;
+	use frame_support::pallet_prelude::*;
+
+	#[pallet::pallet]
+	pub struct Pallet<T>(_);
+
+	#[pallet::config]
+	pub trait Config: frame_system::Config {}
+
+	/// Origin for the teyrchains.
+	#[pallet::origin]
+	#[derive(
+		PartialEq,
+		Eq,
+		Clone,
+		Encode,
+		Decode,
+		DecodeWithMemTracking,
+		Debug,
+		scale_info::TypeInfo,
+		MaxEncodedLen,
+	)]
+	pub enum Origin {
+		/// It comes from a teyrchain.
+		Teyrchain(ParaId),
+	}
+}
+
+impl From<u32> for Origin {
+	fn from(id: u32) -> Origin {
+		Origin::Teyrchain(id.into())
+	}
+}