Struct light_compressed_token::token_data::TokenData

pub struct TokenData {
    pub mint: Pubkey,
    pub owner: Pubkey,
    pub amount: u64,
    pub delegate: Option<Pubkey>,
    pub state: AccountState,
    pub is_native: Option<u64>,
    pub delegated_amount: u64,
}

Fields

mint: Pubkey

The mint associated with this account

owner: Pubkey

The owner of this account.

amount: u64

The amount of tokens this account holds.

delegate: Option<Pubkey>

If delegate is Some then delegated_amount represents the amount authorized by the delegate

state: AccountState

The account’s state

is_native: Option<u64>

If is_some, this is a native token, and the value logs the rent-exempt reserve. An Account is required to be rent-exempt, so the value is used by the Processor to ensure that wrapped SOL accounts do not drop below this threshold.

delegated_amount: u64

The amount delegated

Implementations

impl TokenData

Hashing schema: H(mint, owner, amount, delegate, delegated_amount, is_native, state)

delegate, delegated_amount, is_native and state have dynamic positions. Always hash mint, owner and amount If delegate hash delegate and delegated_amount together. If is native hash is_native. If frozen hash is frozen.

Security: to prevent the possibility that different fields with the same value result in the same hash we add a prefix to the delegated amount, is native and state fields. This way we can have a dynamic hashing schema and hash only used values.

pub fn hash_with_hashed_values<H: Hasher>( mint: &[u8; 32], owner: &[u8; 32], amount_bytes: &[u8; 8], native_amount: &Option<u64> ) -> Result<[u8; 32], HasherError>

We should not hash pubkeys multiple times. For all we can assume mints are equal. For all input compressed accounts we can assume owners are equal.

pub fn hash_with_delegate_hashed_values<H: Hasher>( mint: &[u8; 32], owner: &[u8; 32], amount_bytes: &[u8; 8], native_amount: Option<u64>, hashed_delegate: &[u8; 32], delegated_amount: &[u8; 8] ) -> Result<[u8; 32], HasherError>

Trait Implementations

impl BorshDeserialize for TokenData

where Pubkey: BorshDeserialize, u64: BorshDeserialize, Option<Pubkey>: BorshDeserialize, AccountState: BorshDeserialize, Option<u64>: BorshDeserialize,

fn deserialize_reader<R: Read>(reader: &mut R) -> Result<Self, Error>

fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.

fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.

fn try_from_reader<R>(reader: &mut R) -> Result<Self, Error>

where R: Read,

impl BorshSerialize for TokenData

where Pubkey: BorshSerialize, u64: BorshSerialize, Option<Pubkey>: BorshSerialize, AccountState: BorshSerialize, Option<u64>: BorshSerialize,

fn serialize<W: Write>(&self, writer: &mut W) -> Result<(), Error>

fn try_to_vec(&self) -> Result<Vec<u8>, Error>

Serialize this instance into a vector of bytes.

impl Clone for TokenData

fn clone(&self) -> TokenData

Returns a copy of the value.

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

Performs copy-assignment from source.

impl DataHasher for TokenData

fn hash<H: Hasher>(&self) -> Result<[u8; 32], HasherError>

impl Debug for TokenData

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

Formats the value using the given formatter.

impl PartialEq for TokenData

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

impl Eq for TokenData

impl StructuralPartialEq for TokenData