Module spl_token_2022::extension

Extensions available to token mints and accounts

Modules

• confidential_transfer
  Confidential Transfer extension
• confidential_transfer_fee
  Confidential Transfer Fee extension
• cpi_guard
  CPI Guard extension
• default_account_state
  Default Account State extension
• group_member_pointer
  Group Member Pointer extension
• group_pointer
  Group Pointer extension
• immutable_owner
  Immutable Owner extension
• interest_bearing_mint
  Interest-Bearing Mint extension
• memo_transfer
  Memo Transfer extension
• metadata_pointer
  Metadata Pointer extension
• mint_close_authority
  Mint Close Authority extension
• non_transferable
  Non Transferable extension
• permanent_delegate
  Permanent Delegate extension
• reallocate
  Utility to reallocate token accounts
• token_group
  Token-group extension
• token_metadata
  Token-metadata extension
• transfer_fee
  Transfer Fee extension
• transfer_hook
  Transfer Hook extension

Structs

• Length
  Length in TLV structure
• StateWithExtensions
  Encapsulates immutable base state data (mint or account) with possible extensions
• StateWithExtensionsMut
  Encapsulates mutable base state data (mint or account) with possible extensions
• StateWithExtensionsOwned
  Encapsulates owned immutable base state data (mint or account) with possible extensions

Enums

• AccountType
  Different kinds of accounts. Note that Mint, Account, and Multisig types are determined exclusively by the size of the account, and are not included in the account data. AccountType is only included if extensions have been initialized.
• ExtensionType
  Extensions that can be applied to mints or accounts. Mint extensions must only be applied to mint accounts, and account extensions must only be applied to token holding accounts.

Traits

• BaseState
  Trait for base states, specifying the associated enum
• BaseStateWithExtensions
  Trait for base state with extension
• Extension
  Trait to be implemented by all extension states, specifying which extension and account type they are associated with

Functions

• alloc_and_serialize
  Packs a fixed-length extension into a TLV space
• alloc_and_serialize_variable_len_extension
  Packs a variable-length extension into a TLV space
• set_account_type
  If AccountType is uninitialized, set it to the BaseState’s ACCOUNT_TYPE; if AccountType is already set, check is set correctly for BaseState This method assumes that the base_data has already been packed with data of the desired type.