Enum MintExtension 

#[non_exhaustive]
pub enum MintExtension<'a> {
    TransferFeeConfig {
        authority: Option<&'a Address>,
        withdraw_authority: Option<&'a Address>,
        basis_points: u16,
        maximum_fee: u64,
    },
    MintCloseAuthority(Option<&'a Address>),
    NonTransferable,
    PermanentDelegate(&'a Address),
    TransferHook {
        authority: Option<&'a Address>,
        program_id: Option<&'a Address>,
    },
    MetadataPointer {
        authority: Option<&'a Address>,
        metadata_address: Option<&'a Address>,
    },
    DefaultAccountState(u8),
    InterestBearing {
        rate_authority: Option<&'a Address>,
        rate: i16,
    },
    ScaledUiAmount {
        authority: Option<&'a Address>,
        multiplier: f64,
    },
    Pausable(&'a Address),
    GroupPointer {
        authority: Option<&'a Address>,
        group_address: Option<&'a Address>,
    },
    GroupMemberPointer {
        authority: Option<&'a Address>,
        member_address: Option<&'a Address>,
    },
    PermissionedBurn(&'a Address),
}

Fixed-size mint extensions supported by MintPlan.

Extension authorities and hook/metadata addresses use Token-2022’s nullable address encoding where applicable. Some(zero_address) is rejected for those fields, rather than silently being interpreted as None.

Token-2022 keeps adding extensions, and each one Hopper supports is a new variant, so a match outside this crate needs a wildcard arm.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

TransferFeeConfig

Fields

authority: Option<&'a Address>

withdraw_authority: Option<&'a Address>

basis_points: u16

maximum_fee: u64

MintCloseAuthority(Option<&'a Address>)

NonTransferable

PermanentDelegate(&'a Address)

TransferHook

Fields

authority: Option<&'a Address>

program_id: Option<&'a Address>

MetadataPointer

Fields

authority: Option<&'a Address>

metadata_address: Option<&'a Address>

DefaultAccountState(u8)

New token accounts start in this state: 1 initialized, 2 frozen.

InterestBearing

Balances display with continuously compounding interest at rate basis points; rate_authority may change the rate.

Fields

rate_authority: Option<&'a Address>

rate: i16

ScaledUiAmount

Balances display multiplied by multiplier (positive and finite); authority may schedule a new multiplier.

Fields

authority: Option<&'a Address>

multiplier: f64

Pausable(&'a Address)

The authority that may pause and resume the mint.

GroupPointer

Fields

authority: Option<&'a Address>

group_address: Option<&'a Address>

GroupMemberPointer

Fields

authority: Option<&'a Address>

member_address: Option<&'a Address>

PermissionedBurn(&'a Address)

Burns need this authority’s signature next to the holder’s.

Implementations

impl MintExtension<'_>

pub const fn extension_type(&self) -> u16

Token-2022’s TLV extension discriminator (not an instruction tag).

pub const fn value_len(&self) -> usize

The extension’s TLV value length: the size of its on-chain state.

pub fn instruction_data(&self) -> Result<MintInstructionData, ProgramError>

Canonical instruction bytes, also usable by off-chain instruction builders.

Trait Implementations

impl<'a> Clone for MintExtension<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for MintExtension<'a>