Rename Palette to FRAME (#4182)

* palette -> frame

* PALETTE, Palette -> FRAME

* Move folder pallete -> frame

* Update docs/Structure.adoc

Co-Authored-By: Benjamin Kampmann <ben.kampmann@googlemail.com>

* Update docs/README.adoc

Co-Authored-By: Benjamin Kampmann <ben.kampmann@googlemail.com>

* Update README.adoc

substrate/frame/utility/src/lib.rs

@@ -0,0 +1,158 @@
+// Copyright 2019 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/>.
+
+//! # Utility Module
+//! A module full of useful helpers for practical chain management.
+
+// Ensure we're `no_std` when compiling for Wasm.
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use rstd::prelude::*;
+use support::{decl_module, decl_event, Parameter, weights::SimpleDispatchInfo};
+use system::ensure_root;
+use sr_primitives::{traits::Dispatchable, DispatchError};
+
+/// Configuration trait.
+pub trait Trait: system::Trait {
+	/// The overarching event type.
+	type Event: From<Event> + Into<<Self as system::Trait>::Event>;
+
+	/// The overarching call type.
+	type Call: Parameter + Dispatchable<Origin=Self::Origin>;
+}
+
+decl_event!(
+	/// Events type.
+	pub enum Event {
+		BatchExecuted(Vec<Result<(), DispatchError>>),
+	}
+);
+
+decl_module! {
+	pub struct Module<T: Trait> for enum Call where origin: T::Origin {
+		/// Deposit one of this module's events by using the default implementation.
+		fn deposit_event() = default;
+
+		/// Send a batch of dispatch calls (only root).
+		#[weight = SimpleDispatchInfo::FreeOperational]
+		fn batch(origin, calls: Vec<<T as Trait>::Call>) {
+			ensure_root(origin)?;
+			let results = calls.into_iter()
+				.map(|call| call.dispatch(system::RawOrigin::Root.into()))
+				.map(|res| res.map_err(Into::into))
+				.collect::<Vec<_>>();
+			Self::deposit_event(Event::BatchExecuted(results));
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+
+	use support::{assert_ok, assert_noop, impl_outer_origin, parameter_types, impl_outer_dispatch};
+	use primitives::H256;
+	use sr_primitives::{Perbill, traits::{BlakeTwo256, IdentityLookup}, testing::Header};
+
+	impl_outer_origin! {
+		pub enum Origin for Test {}
+	}
+
+	impl_outer_dispatch! {
+		pub enum Call for Test where origin: Origin {
+			balances::Balances,
+			utility::Utility,
+		}
+	}
+
+	// For testing the module, we construct most of a mock runtime. This means
+	// first constructing a configuration type (`Test`) which `impl`s each of the
+	// configuration traits of modules we want to use.
+	#[derive(Clone, Eq, PartialEq)]
+	pub struct Test;
+	parameter_types! {
+		pub const BlockHashCount: u64 = 250;
+		pub const MaximumBlockWeight: u32 = 1024;
+		pub const MaximumBlockLength: u32 = 2 * 1024;
+		pub const AvailableBlockRatio: Perbill = Perbill::one();
+	}
+	impl system::Trait for Test {
+		type Origin = Origin;
+		type Index = u64;
+		type BlockNumber = u64;
+		type Hash = H256;
+		type Call = Call;
+		type Hashing = BlakeTwo256;
+		type AccountId = u64;
+		type Lookup = IdentityLookup<Self::AccountId>;
+		type Header = Header;
+		type Event = ();
+		type BlockHashCount = BlockHashCount;
+		type MaximumBlockWeight = MaximumBlockWeight;
+		type MaximumBlockLength = MaximumBlockLength;
+		type AvailableBlockRatio = AvailableBlockRatio;
+		type Version = ();
+	}
+	parameter_types! {
+		pub const ExistentialDeposit: u64 = 0;
+		pub const TransferFee: u64 = 0;
+		pub const CreationFee: u64 = 0;
+	}
+	impl balances::Trait for Test {
+		type Balance = u64;
+		type OnFreeBalanceZero = ();
+		type OnNewAccount = ();
+		type Event = ();
+		type TransferPayment = ();
+		type DustRemoval = ();
+		type ExistentialDeposit = ExistentialDeposit;
+		type TransferFee = TransferFee;
+		type CreationFee = CreationFee;
+	}
+	impl Trait for Test {
+		type Event = ();
+		type Call = Call;
+	}
+	type Balances = balances::Module<Test>;
+	type Utility = Module<Test>;
+
+	fn new_test_ext() -> runtime_io::TestExternalities {
+		let mut t = system::GenesisConfig::default().build_storage::<Test>().unwrap();
+		balances::GenesisConfig::<Test> {
+			balances: vec![(1, 10), (2, 0)],
+			vesting: vec![],
+		}.assimilate_storage(&mut t).unwrap();
+		t.into()
+	}
+
+	#[test]
+	fn batch_works() {
+		new_test_ext().execute_with(|| {
+			assert_eq!(Balances::free_balance(1), 10);
+			assert_eq!(Balances::free_balance(2), 0);
+			assert_noop!(Utility::batch(Origin::signed(1), vec![
+				Call::Balances(balances::Call::force_transfer(1, 2, 5)),
+				Call::Balances(balances::Call::force_transfer(1, 2, 5))
+			]), "RequireRootOrigin");
+			assert_ok!(Utility::batch(Origin::ROOT, vec![
+				Call::Balances(balances::Call::force_transfer(1, 2, 5)),
+				Call::Balances(balances::Call::force_transfer(1, 2, 5))
+			]));
+			assert_eq!(Balances::free_balance(1), 0);
+			assert_eq!(Balances::free_balance(2), 10);
+		});
+	}
+}