Struct GetAccountDataSize 

pub struct GetAccountDataSize<'a> {
    pub mint: &'a AccountView<'a>,
    pub extension_types: &'a [u16],
}

GetAccountDataSize (21): ask the token program how many bytes a token account for mint needs, as a u64 in the return data. On Token-2022 the mint’s required account extensions are included automatically and extension_types adds more (for example crate::token_2022_ext::EXT_IMMUTABLE_OWNER); SPL Token ignores the list and answers 165.

Fields

mint: &'a AccountView<'a>

extension_types: &'a [u16]

Implementations

impl GetAccountDataSize<'_>

pub fn invoke(&self) -> ProgramResult

pub fn query(&self, program: TokenProgram) -> Result<u64, ProgramError>

Invoke on program and read the answer from the return data.

pub fn query_for_owner(&self) -> Result<u64, ProgramError>

query on whichever token program owns mint.

impl GetAccountDataSize<'_>

pub fn invoke_on( &self, program: TokenProgram, multisig_signers: &[&AccountView<'_>], signers: &[Signer<'_, '_>], ) -> ProgramResult

Send this instruction to an explicit token program.

multisig_signers is empty for a single-key authority; when signers is empty the authority (or every multisig signer) must have signed the transaction directly.

pub fn invoke_for_owner( &self, multisig_signers: &[&AccountView<'_>], signers: &[Signer<'_, '_>], ) -> ProgramResult

Send this instruction to whichever token program owns mint (one 32-byte compare). Any other owner is refused with IncorrectProgramId before the CPI.

Trait Implementations

impl<'a, 'x: 'a> TokenInstruction<'a> for GetAccountDataSize<'x>

fn emit( &self, multisig_signers: &[&'a AccountView<'a>], sink: &mut impl TokenSink<'a>, ) -> ProgramResult