Deprecate Currency; introduce holds and freezing into fungible traits (#12951)

* First reworking of fungibles API

* New API and docs

* More fungible::* API improvements

* New ref-counting logic for old API

* Missing files

* Fixes

* Use the new transfer logic

* Use fungibles for the dispatchables

* Use shelve/restore names

* Locking works with total balance.

* repotting and removal

* Separate Holds from Reserves

* Introduce freezes

* Missing files

* Tests for freezing

* Fix hold+freeze combo

* More tests

* Fee-free dispatchable for upgrading accounts

* Benchmarks and a few fixes

* Another test

* Docs and refactor to avoid blanket impls

* Repot

* Fit out ItemOf fully

* Add events to Balanced traits

* Introduced events into Hold traits

* Fix Assets pallet tests

* Assets benchmarks pass

* Missing files and fixes

* Fixes

* Fixes

* Benchmarks fixes

* Fix balance benchmarks

* Formatting

* Expose fungible sub modules

* Move NIS to fungible API

* Fix broken impl and add test

* Fix tests

* API for `transfer_and_hold`

* Use composite APIs

* Formatting

* Upgraded event

* Fixes

* Fixes

* Fixes

* Fixes

* Repot tests and some fixed

* Fix some bits

* Fix dust tests

* Rename `set_balance`

- `Balances::set_balance` becomes `Balances::force_set_balance`
- `Unbalanced::set_balance` becomes `Unbalances::write_balance`

* becomes

* Move dust handling to fungibles API

* Formatting

* Fixes and more refactoring

* Fixes

* Fixes

* Fixes

* Fixes

* Fixes

* Fixes

* Fixes

* Fixes

* Fixes

* Use reducible_balance for better correctness on fees

* Reducing hold to zero should remove entry.

* Add test

* Docs

* Update frame/support/src/traits/tokens/fungibles/hold.rs

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>

* Update frame/support/src/traits/tokens/fungibles/regular.rs

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>

* Update frame/support/src/traits/tokens/fungible/hold.rs

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>

* Update frame/support/src/traits/tokens/fungible/regular.rs

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>

* Docs

* Docs

* Docs

* Fix NIS benchmarks

* Doc comment

* Remove post_mutation

* Fix some tests

* Fix some grumbles

* Enumify bool args to fungible(s) functions

* Fix up assets and balances

* Formatting

* Fix contracts

* Fix tests & benchmarks build

* Typify minted boolean arg

* Typify on_hold boolean arg; renames

* Fix numerous tests

* Fix dependency issue

* Privatize dangerous API mutate_account

* Fix contracts (@alext - please check this commit)

* Remove println

* Fix tests for contracts

* Fix broken rename

* Fix broken rename

* Fix broken rename

* Docs

* Update frame/support/src/traits/tokens/fungible/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* remove from_ref_time

* Update frame/executive/src/lib.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/executive/src/lib.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Reenable test

* Update frame/support/src/traits/tokens/fungibles/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungible/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungible/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungible/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/currency.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/lottery/src/tests.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungible/mod.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungible/regular.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungibles/freeze.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungible/regular.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungibles/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungibles/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Update frame/support/src/traits/tokens/fungibles/hold.rs

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>

* Rename UnwantedRemoval to UnwantedAccountRemoval

* Docs

* Formatting

* Update frame/balances/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update primitives/runtime/src/lib.rs

Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>

* handle_raw_dust oes nothing

* Formatting

* Fixes

* Grumble

* Fixes

* Add test

* Add test

* Tests for reducible_balance

* Fixes

* Fix Salary

* Fixes

* Disable broken test

* Disable nicely

* Fixes

* Fixes

* Fixes

* Rename some events

* Fix nomination pools breakage

* Add compatibility stub for transfer tx

* Reinstate a safely compatible version of Balances set_balance

* Fixes

* Grumble

* Update frame/nis/src/lib.rs

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_balances

* disable flakey tests

* Update frame/balances/src/lib.rs

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Grumbles

* Grumble

---------

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>
Co-authored-by: Alexander Theißen <alex.theissen@me.com>
Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: command-bot <>

substrate/frame/transaction-payment/src/tests.rs

@@ -285,7 +285,7 @@ fn signed_ext_length_fee_is_also_updated_per_congestion() {
 
 #[test]
 fn query_info_and_fee_details_works() {
-	let call = RuntimeCall::Balances(BalancesCall::transfer { dest: 2, value: 69 });
+	let call = RuntimeCall::Balances(BalancesCall::transfer_allow_death { dest: 2, value: 69 });
 	let origin = 111111;
 	let extra = ();
 	let xt = TestXt::new(call.clone(), Some((origin, extra)));
@@ -348,7 +348,7 @@ fn query_info_and_fee_details_works() {
 
 #[test]
 fn query_call_info_and_fee_details_works() {
-	let call = RuntimeCall::Balances(BalancesCall::transfer { dest: 2, value: 69 });
+	let call = RuntimeCall::Balances(BalancesCall::transfer_allow_death { dest: 2, value: 69 });
 	let info = call.get_dispatch_info();
 	let encoded_call = call.encode();
 	let len = encoded_call.len() as u32;
@@ -530,7 +530,11 @@ fn refund_does_not_recreate_account() {
 			assert_eq!(Balances::free_balance(2), 200 - 5 - 10 - 100 - 5);
 
 			// kill the account between pre and post dispatch
-			assert_ok!(Balances::transfer(Some(2).into(), 3, Balances::free_balance(2)));
+			assert_ok!(Balances::transfer_allow_death(
+				Some(2).into(),
+				3,
+				Balances::free_balance(2)
+			));
 			assert_eq!(Balances::free_balance(2), 0);
 
 			assert_ok!(ChargeTransactionPayment::<Runtime>::post_dispatch(