Struct Checksum

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

A SHA-256 checksum of a Wasm blob, used to identify a Wasm code. This must remain stable since this checksum is stored in the blockchain state.

This is often referred to as “code ID” in go-cosmwasm, even if code ID usually refers to an auto-incrementing number.

Implementations

impl Checksum

pub fn generate(wasm: &[u8]) -> Self

pub fn from_hex(input: &str) -> StdResult<Self>

Tries to parse the given hex string into a checksum. Errors if the string contains non-hex characters or does not contain 32 bytes.

pub fn to_hex(self) -> String

Creates a lowercase hex encoded copy of this checksum.

This takes an owned self instead of a reference because Checksum is cheap to Copy.

pub fn as_slice(&self) -> &[u8]

Returns a reference to the inner bytes of this checksum as a slice. If you need a reference to the array, use AsRef::as_ref.

Trait Implementations

impl AsRef<[u8; 32]> for Checksum

fn as_ref(&self) -> &[u8; 32]

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Checksum

fn clone(&self) -> Checksum

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Checksum

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Checksum

Deserializes as a hex string

fn deserialize<D>(deserializer: D) -> Result<Checksum, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Checksum

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

Formats the value using the given formatter.

impl From<[u8; 32]> for Checksum

fn from(data: [u8; 32]) -> Self

Converts to this type from the input type.

impl From<Checksum> for Vec<u8>

fn from(original: Checksum) -> Vec<u8>

Converts to this type from the input type.

impl Hash for Checksum

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 JsonSchema for Checksum

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl PartialEq for Checksum

fn eq(&self, other: &Checksum) -> 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 Checksum

Serializes as a hex string

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<&[u8]> for Checksum

type Error = ChecksumError

The type returned in the event of a conversion error.

fn try_from(value: &[u8]) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for Checksum

impl Eq for Checksum

impl StructuralPartialEq for Checksum