fuel_storage

Struct StorageRef

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pub struct StorageRef<'a, T: 'a + ?Sized, Type: Mappable>(/* private fields */);
Expand description

The wrapper around the storage that supports only methods from StorageInspect.

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impl<'a, T: StorageInspect<Type>, Type: Mappable> StorageRef<'a, T, Type>

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pub fn get( self, key: &Type::Key, ) -> Result<Option<Cow<'a, Type::OwnedValue>>, T::Error>

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pub fn contains_key(self, key: &Type::Key) -> Result<bool, T::Error>

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impl<'a, T, Type: Mappable> StorageRef<'a, T, Type>

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pub fn root<Key>(self, key: &Key) -> Result<MerkleRoot, T::Error>
where T: MerkleRootStorage<Key, Type>,

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impl<'a, T: StorageRead<Type>, Type: Mappable> StorageRef<'a, T, Type>

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pub fn read( &self, key: &<Type as Mappable>::Key, buf: &mut [u8], ) -> Result<Option<usize>, T::Error>

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pub fn read_alloc( &self, key: &<Type as Mappable>::Key, ) -> Result<Option<Vec<u8>>, T::Error>

Auto Trait Implementations§

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impl<'a, T, Type> Freeze for StorageRef<'a, T, Type>
where T: ?Sized,

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impl<'a, T, Type> RefUnwindSafe for StorageRef<'a, T, Type>
where T: RefUnwindSafe + ?Sized, Type: RefUnwindSafe,

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impl<'a, T, Type> Send for StorageRef<'a, T, Type>
where T: Sync + ?Sized, Type: Send,

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impl<'a, T, Type> Sync for StorageRef<'a, T, Type>
where T: Sync + ?Sized, Type: Sync,

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impl<'a, T, Type> Unpin for StorageRef<'a, T, Type>
where Type: Unpin, T: ?Sized,

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impl<'a, T, Type> UnwindSafe for StorageRef<'a, T, Type>
where T: RefUnwindSafe + ?Sized, Type: 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> StorageAsMut for T

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fn storage<Type>(&mut self) -> StorageMut<'_, Self, Type>
where Type: Mappable,

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fn storage_as_mut<Type>(&mut self) -> StorageMut<'_, Self, Type>
where Type: Mappable,

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impl<T> StorageAsRef for T

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fn storage<Type>(&self) -> StorageRef<'_, Self, Type>
where Type: Mappable,

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fn storage_as_ref<Type>(&self) -> StorageRef<'_, Self, Type>
where Type: Mappable,

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.