Enum StorageMapPatch 

pub enum StorageMapPatch {
    Create {
        entries: StorageMapPatchEntries,
    },
    Update {
        entries: StorageMapPatchEntries,
    },
    Remove,
}

The patch of a single map storage slot.

Variants

Create

Records the creation of the map with the given entries.

An empty entry set is meaningful to represent the creation of an empty map.

Fields

entries: StorageMapPatchEntries

Update

Records that the entries of an existing map were changed.

The entries should be non-empty, since empty entries are a no-op.

Fields

entries: StorageMapPatchEntries

Remove

Records that the map slot was removed.

Implementations

impl StorageMapPatch

pub fn entries(&self) -> Option<&StorageMapPatchEntries>

Returns the entries of the map patch for StorageMapPatch::Create and StorageMapPatch::Update, or None for StorageMapPatch::Remove.

pub fn into_entries(self) -> Option<StorageMapPatchEntries>

Consumes self and returns the entries of the map patch for StorageMapPatch::Create and StorageMapPatch::Update, or None for StorageMapPatch::Remove.

pub fn patch_op(&self) -> StoragePatchOperation

Returns the StoragePatchOperation that this patch represents.

impl StorageMapPatch

pub fn from_iters( cleared_keys: impl IntoIterator<Item = StorageMapKey>, updated_entries: impl IntoIterator<Item = (StorageMapKey, Word)>, ) -> StorageMapPatch

Creates a new StorageMapPatch::Update from the provided iterators of cleared and updated entries.

Trait Implementations

impl Clone for StorageMapPatch

fn clone(&self) -> StorageMapPatch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StorageMapPatch

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

Formats the value using the given formatter.

impl Deserializable for StorageMapPatch

fn read_from<R>(source: &mut R) -> Result<StorageMapPatch, DeserializationError>

where R: ByteReader,

Reads a sequence of bytes from the provided source, attempts to deserialize these bytes into Self, and returns the result.

fn min_serialized_size() -> usize

Returns the minimum serialized size for one instance of this type.

fn read_from_bytes(bytes: &[u8]) -> Result<Self, DeserializationError>

Attempts to deserialize the provided bytes into Self and returns the result.

fn read_from_bytes_with_budget( bytes: &[u8], budget: usize, ) -> Result<Self, DeserializationError>

Deserializes Self from bytes with a byte budget limit.

impl Eq for StorageMapPatch

impl PartialEq for StorageMapPatch

fn eq(&self, other: &StorageMapPatch) -> bool

Equality operator ==.

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

Inequality operator !=.

impl Serializable for StorageMapPatch

fn write_into<W>(&self, target: &mut W)

where W: ByteWriter,

Serializes self into bytes and writes these bytes into the target.

fn get_size_hint(&self) -> usize

Returns an estimate of how many bytes are needed to represent self.

fn to_bytes(&self) -> Vec<u8>

Serializes self into a vector of bytes.

impl StructuralPartialEq for StorageMapPatch