[big refactor] Remove crate aliasing. (#4395)

* Rename: Phase 1.

* Unify codec.

* Fixing: Phase 2

* Fixing: Phase 3.

* Fixing: Phase 4.

* Fixing: Phase 5.

* Fixing: Phase 6.

* Fixing: Phase 7.

* Fixing: Phase 8. Tests

* Fixing: Phase 9. Tests!!!

* Fixing: Phase 10. Moar tests!

* Finally done!

* More fixes.

* Rename primitives:: to sp_core::

* Apply renames in finality-grandpa.

* Fix benches.

* Fix benches 2.

* Revert node-template.

* Fix frame-system in our modules.

substrate/frame/grandpa/src/lib.rs

@@ -32,7 +32,7 @@ pub use sp_finality_grandpa as fg_primitives;
 
 use sp_std::prelude::*;
 use codec::{self as codec, Encode, Decode, Error};
-use support::{decl_event, decl_storage, decl_module, dispatch, storage};
+use frame_support::{decl_event, decl_storage, decl_module, dispatch, storage};
 use sp_runtime::{
 	generic::{DigestItem, OpaqueDigestItemId}, traits::Zero, Perbill,
 };
@@ -44,14 +44,14 @@ use fg_primitives::{
 	GRANDPA_AUTHORITIES_KEY, GRANDPA_ENGINE_ID, ScheduledChange, ConsensusLog, SetId, RoundNumber,
 };
 pub use fg_primitives::{AuthorityId, AuthorityList, AuthorityWeight, VersionedAuthorityList};
-use system::{ensure_signed, DigestOf};
+use frame_system::{self as system, ensure_signed, DigestOf};
 
 mod mock;
 mod tests;
 
-pub trait Trait: system::Trait {
+pub trait Trait: frame_system::Trait {
 	/// The event type of this module.
-	type Event: From<Event> + Into<<Self as system::Trait>::Event>;
+	type Event: From<Event> + Into<<Self as frame_system::Trait>::Event>;
 }
 
 /// A stored pending change, old format.
@@ -266,7 +266,7 @@ impl<T: Trait> Module<T> {
 	/// Cannot be done when already paused.
 	pub fn schedule_pause(in_blocks: T::BlockNumber) -> dispatch::Result {
 		if let StoredState::Live = <State<T>>::get() {
-			let scheduled_at = <system::Module<T>>::block_number();
+			let scheduled_at = <frame_system::Module<T>>::block_number();
 			<State<T>>::put(StoredState::PendingPause {
 				delay: in_blocks,
 				scheduled_at,
@@ -282,7 +282,7 @@ impl<T: Trait> Module<T> {
 	/// Schedule a resume of GRANDPA after pausing.
 	pub fn schedule_resume(in_blocks: T::BlockNumber) -> dispatch::Result {
 		if let StoredState::Paused = <State<T>>::get() {
-			let scheduled_at = <system::Module<T>>::block_number();
+			let scheduled_at = <frame_system::Module<T>>::block_number();
 			<State<T>>::put(StoredState::PendingResume {
 				delay: in_blocks,
 				scheduled_at,
@@ -315,7 +315,7 @@ impl<T: Trait> Module<T> {
 		forced: Option<T::BlockNumber>,
 	) -> dispatch::Result {
 		if !<PendingChange<T>>::exists() {
-			let scheduled_at = <system::Module<T>>::block_number();
+			let scheduled_at = <frame_system::Module<T>>::block_number();
 
 			if let Some(_) = forced {
 				if Self::next_forced().map_or(false, |next| next > scheduled_at) {
@@ -343,7 +343,7 @@ impl<T: Trait> Module<T> {
 	/// Deposit one of this module's logs.
 	fn deposit_log(log: ConsensusLog<T::BlockNumber>) {
 		let log: DigestItem<T::Hash> = DigestItem::Consensus(GRANDPA_ENGINE_ID, log.encode());
-		<system::Module<T>>::deposit_log(log.into());
+		<frame_system::Module<T>>::deposit_log(log.into());
 	}
 
 	fn initialize_authorities(authorities: &AuthorityList) {
@@ -404,8 +404,8 @@ impl<T: Trait> sp_runtime::BoundToRuntimeAppPublic for Module<T> {
 	type Public = AuthorityId;
 }
 
-impl<T: Trait> session::OneSessionHandler<T::AccountId> for Module<T>
-	where T: session::Trait
+impl<T: Trait> pallet_session::OneSessionHandler<T::AccountId> for Module<T>
+	where T: pallet_session::Trait
 {
 	type Key = AuthorityId;
 
@@ -438,7 +438,7 @@ impl<T: Trait> session::OneSessionHandler<T::AccountId> for Module<T>
 
 		// if we didn't issue a change, we update the mapping to note that the current
 		// set corresponds to the latest equivalent session (i.e. now).
-		let session_index = <session::Module<T>>::current_index();
+		let session_index = <pallet_session::Module<T>>::current_index();
 		SetIdSession::insert(current_set_id, &session_index);
 	}
 
@@ -447,9 +447,9 @@ impl<T: Trait> session::OneSessionHandler<T::AccountId> for Module<T>
 	}
 }
 
-impl<T: Trait> finality_tracker::OnFinalizationStalled<T::BlockNumber> for Module<T> {
+impl<T: Trait> pallet_finality_tracker::OnFinalizationStalled<T::BlockNumber> for Module<T> {
 	fn on_stalled(further_wait: T::BlockNumber, median: T::BlockNumber) {
-		// when we record old authority sets, we can use `finality_tracker::median`
+		// when we record old authority sets, we can use `pallet_finality_tracker::median`
 		// to figure out _who_ failed. until then, we can't meaningfully guard
 		// against `next == last` the way that normal session changes do.
 		<Stalled<T>>::put((further_wait, median));

substrate/frame/grandpa/src/mock.rs

@@ -20,14 +20,15 @@
 
 use sp_runtime::{Perbill, DigestItem, traits::IdentityLookup, testing::{Header, UintAuthorityId}};
 use sp_io;
-use support::{impl_outer_origin, impl_outer_event, parameter_types, weights::Weight};
-use primitives::H256;
+use frame_support::{impl_outer_origin, impl_outer_event, parameter_types, weights::Weight};
+use sp_core::H256;
 use codec::{Encode, Decode};
 use crate::{AuthorityId, AuthorityList, GenesisConfig, Trait, Module, ConsensusLog};
 use sp_finality_grandpa::GRANDPA_ENGINE_ID;
 
+use frame_system as system;
 impl_outer_origin!{
-	pub enum Origin for Test {}
+	pub enum Origin for Test  where system = frame_system {}
 }
 
 pub fn grandpa_log(log: ConsensusLog<u64>) -> DigestItem<H256> {
@@ -47,7 +48,7 @@ parameter_types! {
 	pub const MaximumBlockLength: u32 = 2 * 1024;
 	pub const AvailableBlockRatio: Perbill = Perbill::one();
 }
-impl system::Trait for Test {
+impl frame_system::Trait for Test {
 	type Origin = Origin;
 	type Index = u64;
 	type BlockNumber = u64;
@@ -82,12 +83,12 @@ pub fn to_authorities(vec: Vec<(u64, u64)>) -> AuthorityList {
 }
 
 pub fn new_test_ext(authorities: Vec<(u64, u64)>) -> sp_io::TestExternalities {
-	let mut t = system::GenesisConfig::default().build_storage::<Test>().unwrap();
+	let mut t = frame_system::GenesisConfig::default().build_storage::<Test>().unwrap();
 	GenesisConfig {
 		authorities: to_authorities(authorities),
 	}.assimilate_storage::<Test>(&mut t).unwrap();
 	t.into()
 }
 
-pub type System = system::Module<Test>;
+pub type System = frame_system::Module<Test>;
 pub type Grandpa = Module<Test>;

substrate/frame/grandpa/src/tests.rs

@@ -20,7 +20,7 @@
 
 use sp_runtime::{testing::Digest, traits::{Header, OnFinalize}};
 use crate::mock::*;
-use system::{EventRecord, Phase};
+use frame_system::{EventRecord, Phase};
 use codec::{Decode, Encode};
 use fg_primitives::ScheduledChange;
 use super::*;