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Struct pallet_assets::ExtraMutator

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pub struct ExtraMutator<T: Config<I>, I: 'static = ()> { /* private fields */ }
Expand description

A mutator type allowing inspection and possible modification of the extra “sidecar” data.

This may be used as a Deref for the pallet’s extra data. If mutated (using DerefMut), then any uncommitted changes (see commit function) will be automatically committed to storage when dropped. Changes, even after committed, may be reverted to their original values with the revert function.

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impl<T: Config<I>, I: 'static> ExtraMutator<T, I>

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pub fn commit(&mut self) -> Result<(), ()>

Commit any changes to storage.

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pub fn revert(self) -> Result<(), ()>

Revert any changes, even those already committed by self and drop self.

Trait Implementations§

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impl<T: Config<I>, I: 'static> Deref for ExtraMutator<T, I>

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type Target = <T as Config<I>>::Extra

The resulting type after dereferencing.
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fn deref(&self) -> &T::Extra

Dereferences the value.
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impl<T: Config<I>, I: 'static> DerefMut for ExtraMutator<T, I>

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fn deref_mut(&mut self) -> &mut T::Extra

Mutably dereferences the value.
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impl<T: Config<I>, I: 'static> Drop for ExtraMutator<T, I>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<T, I> Freeze for ExtraMutator<T, I>
where <T as Config<I>>::AssetId: Freeze, <T as Config>::AccountId: Freeze, <T as Config<I>>::Extra: Freeze,

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impl<T, I> RefUnwindSafe for ExtraMutator<T, I>
where <T as Config<I>>::AssetId: RefUnwindSafe, <T as Config>::AccountId: RefUnwindSafe, <T as Config<I>>::Extra: RefUnwindSafe,

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impl<T, I> Send for ExtraMutator<T, I>

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impl<T, I> Sync for ExtraMutator<T, I>

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impl<T, I> Unpin for ExtraMutator<T, I>
where <T as Config<I>>::AssetId: Unpin, <T as Config>::AccountId: Unpin, <T as Config<I>>::Extra: Unpin,

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impl<T, I> UnwindSafe for ExtraMutator<T, I>
where <T as Config<I>>::AssetId: UnwindSafe, <T as Config>::AccountId: UnwindSafe, <T as Config<I>>::Extra: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self>
where Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more
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fn checked_into<T>(self) -> Option<T>
where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

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where U: From<T>,

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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Cast reference.
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Cast reference.
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Cast mutable reference.
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fn into_mut(&mut self) -> &mut T

Cast mutable reference.
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where Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

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Get a reference to the inner from the outer.

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Get a mutable reference to the inner from the outer.

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where T: ?Sized,

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
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fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more
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fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

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where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

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where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Output = T

Should always be Self
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impl<T> SaturatedConversion for T

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fn saturated_from<T>(t: T) -> Self
where Self: UniqueSaturatedFrom<T>,

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where Self: UniqueSaturatedInto<T>,

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where SS: SubsetOf<SP>,

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The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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Checks if self is actually part of its subset T (and can be converted to it).
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Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn tap(self, func: impl FnOnce(&Self)) -> Self

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where Self: Borrow<B>, B: ?Sized,

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where Self: Deref<Target = T>, T: ?Sized,

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where Self: DerefMut<Target = T> + Deref, T: ?Sized,

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