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Ensure correct variant count in Runtime[Hold/Freeze]Reason (#1900)

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closes https://github.com/paritytech/polkadot-sdk/issues/1882

## Breaking Changes

This PR introduces a new item to `pallet_balances::Config`:

```diff
trait Config {
++    type RuntimeFreezeReasons;
}
```

This value is only used to check it against `type MaxFreeze`. A similar
check has been added for `MaxHolds` against `RuntimeHoldReasons`, which
is already given to `pallet_balances`.

In all contexts, you should pass the real `RuntimeFreezeReasons`
generated by `construct_runtime` to `type RuntimeFreezeReasons`. Passing
`()` would also work, but it would imply that the runtime uses no
freezes at all.

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
This commit is contained in:
Kian Paimani
2023-10-24 11:01:04 +01:00
committed by GitHub
parent a5a2432d22
commit 35eb133baa
102 changed files with 154 additions and 10 deletions
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substrate/frame/balances/src/lib.rs
+21 -2
View File
@@ -207,7 +207,7 @@ pub mod pallet {
use super::*;
use frame_support::{
pallet_prelude::*,
traits::{fungible::Credit, tokens::Precision},
traits::{fungible::Credit, tokens::Precision, VariantCount},
};
use frame_system::pallet_prelude::*;
@@ -229,6 +229,8 @@ pub mod pallet {
type RuntimeEvent = ();
#[inject_runtime_type]
type RuntimeHoldReason = ();
#[inject_runtime_type]
type RuntimeFreezeReason = ();
type Balance = u64;
type ExistentialDeposit = ConstU64<1>;
@@ -256,7 +258,11 @@ pub mod pallet {
/// The overarching hold reason.
#[pallet::no_default_bounds]
type RuntimeHoldReason: Parameter + Member + MaxEncodedLen + Copy;
type RuntimeHoldReason: Parameter + Member + MaxEncodedLen + Copy + VariantCount;
/// The overarching freeze reason.
#[pallet::no_default_bounds]
type RuntimeFreezeReason: VariantCount;
/// Weight information for extrinsics in this pallet.
type WeightInfo: WeightInfo;
@@ -544,6 +550,19 @@ pub mod pallet {
!<T as Config<I>>::ExistentialDeposit::get().is_zero(),
"The existential deposit must be greater than zero!"
);
assert!(
T::MaxHolds::get() >= <T::RuntimeHoldReason as VariantCount>::VARIANT_COUNT,
"MaxHolds should be greater than or equal to the number of hold reasons: {} < {}",
T::MaxHolds::get(),
<T::RuntimeHoldReason as VariantCount>::VARIANT_COUNT
);
assert!(
T::MaxFreezes::get() >= <T::RuntimeFreezeReason as VariantCount>::VARIANT_COUNT,
"MaxFreezes should be greater than or equal to the number of freeze reasons: {} < {}",
T::MaxFreezes::get(), <T::RuntimeFreezeReason as VariantCount>::VARIANT_COUNT,
);
}
}