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frame_support::traits::tokens::asset_ops::common_strategies

Struct CheckState

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pub struct CheckState<Inspect: InspectStrategy, Inner = NoParams>(pub Inspect::Value, pub Inner);
Expand description

The CheckState is a strategy that accepts an Inspect value and the Inner strategy.

It is meant to be used when the asset state check should be performed prior to the Inner strategy execution. The inspected state must be equal to the provided value.

The CheckState implements all potentially state-mutating strategies that the Inner implements.

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§0: Inspect::Value§1: Inner

Implementations§

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impl<Inspect: InspectStrategy, Inner: Default> CheckState<Inspect, Inner>

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pub fn check(expected: Inspect::Value) -> Self

This function creates a CheckState strategy. The operation that accepts it must check if the provided expected value equals the in-storage one.

If so, the operation must, in turn, proceed according to the default value of the Inner strategy.

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impl<Inspect: InspectStrategy, Inner> CheckState<Inspect, Inner>

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pub fn new(expected: Inspect::Value, inner: Inner) -> Self

This function creates a CheckState strategy. The operation that accepts it must check if the provided expected value equals the in-storage one.

If so, the operation must, in turn, proceed according to the provided value of the Inner strategy.

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impl<Inspect: InspectStrategy, Inner: CreateStrategy> CreateStrategy for CheckState<Inspect, Inner>

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type Success = <Inner as CreateStrategy>::Success

This type represents a successful asset creation. It will be in the Result type of the Create::create function.
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impl<Inspect: InspectStrategy, Inner: DestroyStrategy> DestroyStrategy for CheckState<Inspect, Inner>

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type Success = <Inner as DestroyStrategy>::Success

This type represents a successful asset destruction. It will be in the Result type of the Destroy::destroy function.
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impl<Inspect: InspectStrategy, Inner: RestoreStrategy> RestoreStrategy for CheckState<Inspect, Inner>

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type Success = <Inner as RestoreStrategy>::Success

This type represents a successful asset restoration. It will be in the Result type of the Restore::restore function.
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impl<Inspect: InspectStrategy, Inner: StashStrategy> StashStrategy for CheckState<Inspect, Inner>

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type Success = <Inner as StashStrategy>::Success

This type represents a successful asset stashing. It will be in the Result type of the Stash::stash function.
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impl<Inspect: InspectStrategy, Inner: UpdateStrategy> UpdateStrategy for CheckState<Inspect, Inner>

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type UpdateValue<'u> = <Inner as UpdateStrategy>::UpdateValue<'u>

The value to update the asset’s state. Usually, it should be related to the corresponding InspectStrategy::Value. Read more
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type Success = <Inner as UpdateStrategy>::Success

This type represents a successful asset state update. It will be in the Result type of the Update::update function.

Auto Trait Implementations§

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impl<Inspect, Inner> Freeze for CheckState<Inspect, Inner>
where <Inspect as InspectStrategy>::Value: Freeze, Inner: Freeze,

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impl<Inspect, Inner> RefUnwindSafe for CheckState<Inspect, Inner>
where <Inspect as InspectStrategy>::Value: RefUnwindSafe, Inner: RefUnwindSafe,

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impl<Inspect, Inner> Send for CheckState<Inspect, Inner>
where <Inspect as InspectStrategy>::Value: Send, Inner: Send,

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impl<Inspect, Inner> Sync for CheckState<Inspect, Inner>
where <Inspect as InspectStrategy>::Value: Sync, Inner: Sync,

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impl<Inspect, Inner> Unpin for CheckState<Inspect, Inner>
where <Inspect as InspectStrategy>::Value: Unpin, Inner: Unpin,

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impl<Inspect, Inner> UnwindSafe for CheckState<Inspect, Inner>
where <Inspect as InspectStrategy>::Value: UnwindSafe, Inner: UnwindSafe,

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where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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where T: UpdateStrategy,

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fn as_can_update(self) -> CanUpdate<T>

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