Struct Operation

pub struct Operation {
    pub version: ReservedBytes<1>,
    pub contract_id: ContractId,
    pub call_id: u16,
    pub nonce: fe256,
    pub witness: StateValue,
    pub destructible_in: Confined<Vec<Input>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>,
    pub immutable_in: Confined<Vec<CellAddr>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>,
    pub destructible_out: Confined<Vec<StateCell>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>,
    pub immutable_out: Confined<Vec<StateData>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>,
}

Operation under a contract which may update the contract state.

Fields

version: ReservedBytes<1>

Operation version.

Future use

For now, the only supported version is one; thus, a ReservedBytes is used.

In the future, with more versions coming, this should be replaced with an enum, where the first byte will encode (with standard strict encoding) a version number as an enum variant. For instance,

pub enum Operation {
    V0(OperationV0),
    V1(OperationV1)
}
pub struct OperationV0 { /*...*/ }
pub struct OperationV1 { /*...*/ }

contract_id: ContractId

Contract id for which this operation is performed.

call_id: u16

Contract method this operation calls to.

nonce: fe256

A nonce, used to change operation id for subsequent operations using the same arguments.

witness: StateValue

An operation witness, which, unlike Input::witness is not specific to any particular input but applies to all of them.

destructible_in: Confined<Vec<Input>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>

A list of read-once memory cells which are the inputs to the operation and which state must be destroyed in the result of operation application.

The list may be empty; in this case the operation just adds to the state without destroying any previously existing data.

immutable_in: Confined<Vec<CellAddr>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>

A list of append-only immutable memory cells which this operation may read.

The list may be empty.

destructible_out: Confined<Vec<StateCell>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>

A list of the state for the new destructible memory cells which are created by the operation (read-once, access-controlled).

The list may be empty.

immutable_out: Confined<Vec<StateData>, amplify::::collection::confinement::SmallVec::{constant#0}, amplify::::collection::confinement::SmallVec::{constant#1}>

A list of the state for the new Immutable memory cells, which are created by the operation (write-once, readable by all).

The list may be empty.

Implementations

impl Operation

pub fn opid(&self) -> Opid

Compute operation id - a unique hash committing to all the operation data.

The id is computed using the CommitEncode procedure and is equivalent to the value returned by [Self::commit_id].

Trait Implementations

impl Clone for Operation

fn clone(&self) -> Operation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl CommitEncode for Operation

type CommitmentId = Opid

Type of the resulting commitment.

fn commit_encode(&self, e: &mut CommitEngine)

Encodes the data for the commitment by writing them directly into a std::io::Write writer instance

impl Debug for Operation

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Operation

fn deserialize<__D>( __deserializer: __D, ) -> Result<Operation, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Operation

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Operation

fn cmp(&self, other: &Operation) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Operation

fn eq(&self, other: &Operation) -> 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 PartialOrd for Operation

fn partial_cmp(&self, other: &Operation) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Operation

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StrictDecode for Operation

fn strict_decode(reader: &mut impl TypedRead) -> Result<Operation, DecodeError>

fn strict_read(reader: impl ReadRaw) -> Result<Self, DecodeError>

impl StrictDumb for Operation

fn strict_dumb() -> Operation

impl StrictEncode for Operation

fn strict_encode<W>(&self, writer: W) -> Result<W, Error>

where W: TypedWrite,

fn strict_write(&self, writer: impl WriteRaw) -> Result<(), Error>

impl StrictStruct for Operation

const ALL_FIELDS: &'static [&'static str]

fn strict_check_fields()

fn strict_type_info() -> TypeInfo<Self>

impl StrictType for Operation

const STRICT_LIB_NAME: &'static str = LIB_NAME_ULTRASONIC

fn strict_name() -> Option<TypeName>

impl Eq for Operation

impl StrictProduct for Operation