Struct StateTransition 

pub struct StateTransition {
    pub actor_id: ActorId,
    pub new_state_hash: H256,
    pub exited: bool,
    pub inheritor: ActorId,
    pub value_to_receive: u128,
    pub value_to_receive_negative_sign: bool,
    pub value_claims: Vec<ValueClaim>,
    pub messages: Vec<Message>,
}

Fields

actor_id: ActorId

new_state_hash: H256

exited: bool

inheritor: ActorId

value_to_receive: u128

We represent value_to_receive as u128 and bool because each non-zero byte costs 16 gas, and each zero byte costs 4 gas (see https://evm.codes/about#gascosts).

Negative numbers will be stored like this:

$ cast
> -1 ether
Type: int256
Hex: 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffff21f494c589c0000

This is optimization on EVM side to reduce gas costs for storing and processing values.

value_to_receive_negative_sign: bool

value_claims: Vec<ValueClaim>

messages: Vec<Message>

Trait Implementations

impl Clone for StateTransition

fn clone(&self) -> StateTransition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StateTransition

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

Formats the value using the given formatter.

impl Decode for StateTransition

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Default for StateTransition

fn default() -> StateTransition

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StateTransition

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encode for StateTransition

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

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

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl EncodeLike for StateTransition

impl Eq for StateTransition

impl Hash for StateTransition

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

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 PartialEq for StateTransition

fn eq(&self, other: &StateTransition) -> 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 Serialize for StateTransition

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for StateTransition

impl ToDigest for StateTransition

fn update_hasher(&self, hasher: &mut Keccak256)

fn to_digest(&self) -> Digest

impl TypeInfo for StateTransition

type Identity = StateTransition

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.