Struct ContractInstanceId 

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

The key representing the hash of the contract executable code hash and a set of parameters.

Implementations

impl ContractInstanceId

pub fn from_params_and_code<'a>( params: impl Borrow<Parameters<'a>>, code: impl Borrow<ContractCode<'a>>, ) -> Self

pub const fn new(key: [u8; 32]) -> Self

pub fn encode(&self) -> String

Base58 string representation of the contract id.

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

pub fn from_base58(bytes: impl AsRef<[u8]>) -> Result<Self, Error>

Parse a ContractInstanceId from its base58 text form — the inverse of Self::encode.

The input is base58 characters, not the id’s 32 raw bytes. It takes impl AsRef<[u8]> only so that &str, String and &[u8] of base58 text all work; handing it a raw 32-byte id is a bug, and one that does not look like a bug at the call site. Use ContractInstanceId::new for raw bytes you already hold, or the crate-internal instance_id_from_fbs for bytes off the wire.

This was called from_bytes, documented as “build from the binary representation”. That name and doc caused four decode sites to feed it raw wire bytes, which panicked on every well-formed request: a random 32-byte id essentially never consists solely of base58 characters (the alphabet is 58 of 256 byte values, so the odds are about 2e-21).

Caveat, pre-existing and unchanged: bs58’s onto writes the decoded bytes LEFT-aligned into the 32-byte buffer and reports how many it wrote, which this discards. So base58 text that decodes to fewer than 32 bytes yields a zero-padded id rather than an error — from_base58("1") is the all-zero id. Callers that accept untrusted text (freenet-core parses URL path segments with this) get a well-formed but wrong id rather than a rejection.

pub fn from_bytes(bytes: impl AsRef<[u8]>) -> Result<Self, Error>

👎Deprecated:

renamed to from_base58: this parses base58 TEXT, not raw bytes. For a raw 32-byte id use ContractInstanceId::new.

Renamed to Self::from_base58, which says what it actually does.

Kept as a delegating alias so the rename is not a breaking change.

Trait Implementations

impl Clone for ContractInstanceId

fn clone(&self) -> ContractInstanceId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ContractInstanceId

impl Debug for ContractInstanceId

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

Formats the value using the given formatter.

impl Deref for ContractInstanceId

type Target = [u8; 32]

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'de> Deserialize<'de> for ContractInstanceId

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ContractInstanceId

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

Formats the value using the given formatter.

impl Eq for ContractInstanceId

impl From<ContractKey> for ContractInstanceId

fn from(key: ContractKey) -> Self

Converts to this type from the input type.

impl FromStr for ContractInstanceId

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for ContractInstanceId

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 ContractInstanceId

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ContractInstanceId

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 ContractInstanceId

impl TryFrom<String> for ContractInstanceId

type Error = Error

The type returned in the event of a conversion error.

fn try_from(s: String) -> Result<Self, Self::Error>

Performs the conversion.