Struct common_runtime::fees::WeightToFeeImpl

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pub struct WeightToFeeImpl<Balance, Runtime, Target>(PhantomData<Balance>, PhantomData<Runtime>, PhantomData<Target>);
Expand description

A structure to implement Weight to Fee conversion.

  • Balance: The balance type.
  • Runtime: The system configuration type, providing access to block weights.
  • Target: A type providing the target block fullness.

Tuple Fields§

§0: PhantomData<Balance>§1: PhantomData<Runtime>§2: PhantomData<Target>

Trait Implementations§

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impl<Balance, Runtime, Target> WeightToFeePolynomial for WeightToFeeImpl<Balance, Runtime, Target>
where Balance: BaseArithmetic + From<u64> + Copy + Unsigned + From<u32> + MultiplyRational, Runtime: Config + Config, Target: Get<Perquintill>,

Trait implementation for converting transaction weight to fee.

This implementation is only included when the “constant-fees” feature is not enabled.

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fn polynomial() -> WeightToFeeCoefficients<Self::Balance>

Function to get the polynomial coefficients for weight to fee conversion.

This function calculates the polynomial coefficients for converting transaction weight to fee. If the current block weight and length are less than a fraction of the block max weight and length, and the fee multiplier is one, it returns zero. Otherwise, it calculates the coefficients based on the extrinsic base weight mapped to 5 cents.

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type Balance = Balance

The type that is returned as result from polynomial evaluation.

Auto Trait Implementations§

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impl<Balance, Runtime, Target> Freeze for WeightToFeeImpl<Balance, Runtime, Target>

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impl<Balance, Runtime, Target> RefUnwindSafe for WeightToFeeImpl<Balance, Runtime, Target>
where Balance: RefUnwindSafe, Runtime: RefUnwindSafe, Target: RefUnwindSafe,

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impl<Balance, Runtime, Target> Send for WeightToFeeImpl<Balance, Runtime, Target>
where Balance: Send, Runtime: Send, Target: Send,

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impl<Balance, Runtime, Target> Sync for WeightToFeeImpl<Balance, Runtime, Target>
where Balance: Sync, Runtime: Sync, Target: Sync,

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impl<Balance, Runtime, Target> Unpin for WeightToFeeImpl<Balance, Runtime, Target>
where Balance: Unpin, Runtime: Unpin, Target: Unpin,

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impl<Balance, Runtime, Target> UnwindSafe for WeightToFeeImpl<Balance, Runtime, Target>
where Balance: UnwindSafe, Runtime: UnwindSafe, Target: UnwindSafe,

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impl<T> WeightToFee for T
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fn weight_to_fee(weight: &Weight) -> <T as WeightToFee>::Balance

Calculates the fee from the passed weight according to the polynomial.

This should not be overridden in most circumstances. Calculation is done in the Balance type and never overflows. All evaluation is saturating.

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type Balance = <T as WeightToFeePolynomial>::Balance

The type that is returned as result from calculation.
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