Struct TransactionSlot 

pub struct TransactionSlot(/* private fields */);

The type of transaction slot could be either explicit slot address or output index.

A payload declares its outputs upfront, and every #[output] and return value of a method writes one of them, see TransactionOutput. If Self::slot_type() returns TransactionSlotType::OutputIndex, then the slot is the value that an earlier method wrote last into the declared output with output_index, instead of what was specified in external_args. This allows composing calls to multiple methods into more sophisticated workflows without writing special contracts for this.

Implementations

impl TransactionSlot

pub const fn new_address() -> Self

Explicit slot address

pub const fn new_output_index(output_index: u8) -> Option<Self>

Output index value.

Valid index values are below MAX_OUTPUTS.

pub const fn from_u8(n: u8) -> Option<Self>

Create an instance from u8.

Returns None for bytes that Self::into_u8() never returns, so each slot has one encoding.

pub const fn into_u8(self) -> u8

Convert instance into u8

pub const fn slot_type(self) -> TransactionSlotType

Returns Some(output_index) or None if explicit slot address

Trait Implementations

impl Clone for TransactionSlot

fn clone(&self) -> TransactionSlot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TransactionSlot

impl Debug for TransactionSlot

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

Formats the value using the given formatter.