Struct sway_types::state::StateIndex

pub struct StateIndex(_);

Represents the position in a storage statement that a field was declared. For example, in the following storage declaration, foo has StateIndex 0 and bar has StateIndex 1.

The actual [StorageSlot] is calculated as the sha256 hash of the domain separator [sway_utils::constants::STORAGE_DOMAIN_SEPARATOR] concatenated with the index.

Here, foo’s [StorageSlot] is sha256(format!("{}{}", STORAGE_DOMAIN_SEPARATOR, 0)) or F383B0CE51358BE57DAA3B725FE44ACDB2D880604E367199080B4379C41BB6ED.

bar’s [StorageSlot] is sha256(format!("{}{}", STORAGE_DOMAIN_SEPARATOR, 1)) or DE9090CB50E71C2588C773487D1DA7066D0C719849A7E58DC8B6397A25C567C0.

Implementations

impl StateIndex

pub fn new(raw: usize) -> Self

pub fn to_usize(&self) -> usize

Trait Implementations

impl Clone for StateIndex

fn clone(&self) -> StateIndex

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StateIndex

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

Formats the value using the given formatter.

impl Hash for StateIndex

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<StateIndex> for StateIndex

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for StateIndex

impl Eq for StateIndex

impl StructuralEq for StateIndex

impl StructuralPartialEq for StateIndex