Struct frame::traits::tokens::fungible::LoneHoldConsideration

pub struct LoneHoldConsideration<A, Fx, Rx, D>(_);

Basic consideration method using a fungible balance placed on hold as the cost exacted for the footprint.

NOTE: This is an optimized implementation, which can only be used for systems where each account has only a single active ticket associated with it since individual tickets do not track the specific balance which is frozen. If you are uncertain then use FreezeConsideration instead, since this works in all circumstances.

Trait Implementations

impl<A, Fx, Rx, D> Clone for LoneHoldConsideration<A, Fx, Rx, D>

fn clone(&self) -> LoneHoldConsideration<A, Fx, Rx, D>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<A, F, R, D> Consideration<A> for LoneHoldConsideration<A, F, R, D>where A: 'static, F: 'static + Mutate<A>, R: 'static + Get<<F as Inspect<A>>::Reason>, D: 'static + Convert<Footprint, <F as Inspect<A>>::Balance>,

fn new( who: &A, footprint: Footprint ) -> Result<LoneHoldConsideration<A, F, R, D>, DispatchError>

Create a ticket for the new footprint attributable to who. This ticket must ultimately be consumed through update or drop once the footprint changes or is removed.

fn update( self, who: &A, footprint: Footprint ) -> Result<LoneHoldConsideration<A, F, R, D>, DispatchError>

Optionally consume an old ticket and alter the footprint, enforcing the new cost to who and returning the new ticket (or an error if there was an issue).

fn drop(self, who: &A) -> Result<(), DispatchError>

Consume a ticket for some old footprint attributable to who which should now been freed.

fn burn(self, who: &A)

Consume a ticket for some old footprint attributable to who which should be sacrificed.

impl<A, Fx, Rx, D> Debug for LoneHoldConsideration<A, Fx, Rx, D>

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<A, Fx, Rx, D> Decode for LoneHoldConsideration<A, Fx, Rx, D>where PhantomData<fn() -> (A, Fx, Rx, D)>: Decode,

fn decode<__CodecInputEdqy>( __codec_input_edqy: &mut __CodecInputEdqy ) -> Result<LoneHoldConsideration<A, Fx, Rx, D>, Error>where __CodecInputEdqy: Input,

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self> ) -> Result<DecodeFinished, Error>where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<A, Fx, Rx, D> Encode for LoneHoldConsideration<A, Fx, Rx, D>where PhantomData<fn() -> (A, Fx, Rx, D)>: Encode,

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )where __CodecOutputEdqy: Output + ?Sized,

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8, Global>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> Rwhere F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<A, Fx, Rx, D> MaxEncodedLen for LoneHoldConsideration<A, Fx, Rx, D>

fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.

impl<A, Fx, Rx, D> PartialEq<LoneHoldConsideration<A, Fx, Rx, D>> for LoneHoldConsideration<A, Fx, Rx, D>

fn eq(&self, other: &LoneHoldConsideration<A, Fx, Rx, D>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<A, Fx, Rx, D> TypeInfo for LoneHoldConsideration<A, Fx, Rx, D>where PhantomData<fn() -> (A, Fx, Rx, D)>: TypeInfo + 'static, A: 'static, Fx: 'static, Rx: 'static, D: 'static,

type Identity = LoneHoldConsideration<A, Fx, Rx, D>

The type identifying for which type info is provided.

fn type_info() -> Type<MetaForm>

Returns the static type identifier for Self.

impl<A, Fx, Rx, D> EncodeLike<LoneHoldConsideration<A, Fx, Rx, D>> for LoneHoldConsideration<A, Fx, Rx, D>where PhantomData<fn() -> (A, Fx, Rx, D)>: Encode,

impl<A, Fx, Rx, D> Eq for LoneHoldConsideration<A, Fx, Rx, D>