Enum SplTokenInstruction 

pub enum SplTokenInstruction {
    InitializeMint {
        decimals: u8,
    },
    InitializeAccount,
    InitializeMultisig {
        m: u8,
    },
    Transfer {
        amount: u64,
    },
    Approve {
        amount: u64,
    },
    Revoke,
    SetAuthority {
        authority_type: u8,
    },
    MintTo {
        amount: u64,
    },
    Burn {
        amount: u64,
    },
    CloseAccount,
    FreezeAccount,
    ThawAccount,
    TransferChecked {
        amount: u64,
        decimals: u8,
    },
    ApproveChecked {
        amount: u64,
        decimals: u8,
    },
    MintToChecked {
        amount: u64,
        decimals: u8,
    },
    BurnChecked {
        amount: u64,
        decimals: u8,
    },
    InitializeAccount2,
    SyncNative,
    InitializeAccount3,
    InitializeMultisig2 {
        m: u8,
    },
    InitializeMint2 {
        decimals: u8,
    },
    GetAccountDataSize,
    InitializeImmutableOwner,
    AmountToUiAmount {
        amount: u64,
    },
    UiAmountToAmount,
}

SPL Token program instructions.

The SPL Token program uses a 1-byte discriminator (variant index). Each variant’s discriminator is its position in this enum (0, 1, 2, …).

Note: Complex types (Pubkey, COption) are not fully parsed; only primitive fields are extracted.

Variants

InitializeMint

Initialize a new mint (index 0) Fields: decimals: u8, mint_authority: Pubkey, freeze_authority: COption

Fields

decimals: u8

InitializeAccount

Initialize a new token account (index 1)

InitializeMultisig

Initialize a multisig account (index 2)

Fields

m: u8

Transfer

Transfer tokens (index 3)

Fields

amount: u64

Approve

Approve a delegate (index 4)

Fields

amount: u64

Revoke

Revoke delegate authority (index 5)

SetAuthority

Set a new authority (index 6) Fields: authority_type: u8, new_authority: COption

Fields

authority_type: u8

MintTo

Mint new tokens (index 7)

Fields

amount: u64

Burn

Burn tokens (index 8)

Fields

amount: u64

CloseAccount

Close a token account (index 9)

FreezeAccount

Freeze a token account (index 10)

ThawAccount

Thaw a frozen token account (index 11)

TransferChecked

Transfer tokens with decimals check (index 12)

Fields

amount: u64

decimals: u8

ApproveChecked

Approve delegate with decimals check (index 13)

Fields

amount: u64

decimals: u8

MintToChecked

Mint tokens with decimals check (index 14)

Fields

amount: u64

decimals: u8

BurnChecked

Burn tokens with decimals check (index 15)

Fields

amount: u64

decimals: u8

InitializeAccount2

Initialize account with owner in data (index 16) Fields: owner: Pubkey (32 bytes)

SyncNative

Sync native SOL balance (index 17)

InitializeAccount3

Initialize account without rent sysvar (index 18) Fields: owner: Pubkey (32 bytes)

InitializeMultisig2

Initialize multisig without rent sysvar (index 19)

Fields

m: u8

InitializeMint2

Initialize mint without rent sysvar (index 20) Fields: decimals: u8, mint_authority: Pubkey, freeze_authority: COption

Fields

decimals: u8

GetAccountDataSize

Get required account size (index 21)

InitializeImmutableOwner

Initialize immutable owner extension (index 22)

AmountToUiAmount

Convert amount to UI amount string (index 23)

Fields

amount: u64

UiAmountToAmount

Convert UI amount string to amount (index 24) Fields: ui_amount: &str (variable length)