Enum StorageSlotContent 

pub enum StorageSlotContent {
    Value(Word),
    Map(StorageMap),
}

Represents the contents of a StorageSlot.

The content of a storage slot can be of two types:

• A simple value which contains a single word (4 field elements or ~32 bytes).
• A key value map where both keys and values are words. The capacity of such storage slot is theoretically unlimited.

Variants

Value(Word)

Map(StorageMap)

Implementations

impl StorageSlotContent

pub fn is_default(&self) -> bool

Returns true if this storage slot has a value equal to the default of its type.

pub fn default_word(&self) -> Word

Returns the empty Word for a storage slot of this type

pub fn empty_value() -> StorageSlotContent

Returns a StorageSlotContent::Value with an empty word.

pub fn empty_map() -> StorageSlotContent

Returns an empty StorageSlotContent::Map.

pub fn value(&self) -> Word

Returns this storage slot value as a Word

Returns:

• For StorageSlotContent::Value the value.
• For StorageSlotContent::Map the root of the StorageMap.

pub fn slot_type(&self) -> StorageSlotType

Returns the type of this storage slot

Trait Implementations

impl Clone for StorageSlotContent

fn clone(&self) -> StorageSlotContent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StorageSlotContent

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

Formats the value using the given formatter.

impl Deserializable for StorageSlotContent

fn read_from<R>( source: &mut R, ) -> Result<StorageSlotContent, 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 read_from_bytes(bytes: &[u8]) -> Result<Self, DeserializationError>

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

impl PartialEq for StorageSlotContent

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serializable for StorageSlotContent

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 Eq for StorageSlotContent

impl StructuralPartialEq for StorageSlotContent