Struct State

#[repr(C)]
pub struct State;

Implementations

impl State

pub fn write( env: &mut Env, (address, contract_state): (&Address, &mut VariableBytes<MAX_STATE_SIZE>), new_state: &VariableBytes<MAX_STATE_SIZE>, ) -> Result<(), ContractError>

Write contract’s state

pub fn read( contract_state: &VariableBytes<MAX_STATE_SIZE>, state: &mut VariableBytes<MAX_STATE_SIZE>, ) -> Result<(), ContractError>

Read contract’s state

pub fn is_empty(contract_state: &VariableBytes<MAX_STATE_SIZE>) -> bool

Check if contract’s state is empty

Trait Implementations

impl Clone for State

fn clone(&self) -> State

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Contract for State

const MAIN_CONTRACT_METADATA: &[u8]

Main contract metadata, see ContractMetadataKind for encoding details.

const CRATE_NAME: &str = "ab-system-contract-state"

Name of the crate where contact is located.

type Slot = VariableBytes<MAX_STATE_SIZE>

Slot type used by this contract

type Tmp = ()

Tmp type used by this contract

impl TrivialType for State

const METADATA: &[u8]

Data structure metadata in binary form, describing shape and types of the contents, see IoTypeMetadataKind for encoding details.

const SIZE: u32 = _

unsafe fn from_bytes(bytes: &[u8]) -> Option<&Self>

Create a reference to a type, which is represented by provided memory.

unsafe fn from_bytes_mut(bytes: &mut [u8]) -> Option<&mut Self>

Create a mutable reference to a type, which is represented by provided memory.

fn as_bytes(&self) -> &[u8]

Access underlying byte representation of a data structure

unsafe fn as_bytes_mut(&mut self) -> &mut [u8]

Access underlying mutable byte representation of a data structure.

impl Copy for State