Struct UncheckedAccount 

pub struct UncheckedAccount<'info>(/* private fields */);

Explicit wrapper for AccountInfo types to emphasize that no checks are performed

Implementations

impl<'info> UncheckedAccount<'info>

pub fn try_from(acc_info: &'info AccountInfo<'info>) -> Self

Methods from Deref<Target = AccountInfo<'info>>

pub fn signer_key(&self) -> Option<&Address>

pub fn unsigned_key(&self) -> &Address

pub fn lamports(&self) -> u64

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

pub unsafe fn original_data_len(&self) -> usize

Return the account’s original data length when it was serialized for the current program invocation.

Safety

This method assumes that the original data length was serialized as a u32 integer in the 4 bytes immediately preceding the serialized account key.

pub fn data_len(&self) -> usize

pub fn try_data_len(&self) -> Result<usize, ProgramError>

pub fn data_is_empty(&self) -> bool

pub fn try_data_is_empty(&self) -> Result<bool, ProgramError>

pub fn try_borrow_lamports(&self) -> Result<Ref<'_, &mut u64>, ProgramError>

pub fn try_borrow_mut_lamports( &self, ) -> Result<RefMut<'_, &'a mut u64>, ProgramError>

pub fn try_borrow_data(&self) -> Result<Ref<'_, &mut [u8]>, ProgramError>

pub fn try_borrow_mut_data( &self, ) -> Result<RefMut<'_, &'a mut [u8]>, ProgramError>

pub fn resize(&self, new_len: usize) -> Result<(), ProgramError>

Resize the account’s data: Either truncating or zero extending.

Note: Account data can be increased within a single call by up to solana_program::entrypoint::MAX_PERMITTED_DATA_INCREASE bytes.

Safety

This method makes assumptions about the layout and location of memory referenced by AccountInfo fields. It should only be called for instances of AccountInfo that were created by the runtime and received in the process_instruction entrypoint of a program.

pub fn assign(&self, new_owner: &Address)

Trait Implementations

impl<'info, B> Accounts<'info, B> for UncheckedAccount<'info>

fn try_accounts( _program_id: &Pubkey, accounts: &mut &'info [AccountInfo<'info>], _ix_data: &[u8], _bumps: &mut B, _reallocs: &mut BTreeSet<Pubkey>, ) -> Result<Self>

Returns the validated accounts struct. What constitutes “valid” is program dependent. However, users of these types should never have to worry about account substitution attacks. For example, if a program expects a Mint account from the SPL token program in a particular field, then it should be impossible for this method to return Ok if any other account type is given–from the SPL token program or elsewhere.

impl<'info> AccountsExit<'info> for UncheckedAccount<'info>

fn exit(&self, _program_id: &Pubkey) -> Result<()>

program_id is the currently executing program.

impl<'info> AsRef<AccountInfo<'info>> for UncheckedAccount<'info>

fn as_ref(&self) -> &AccountInfo<'info>

Converts this type into a shared reference of the (usually inferred) input type.

impl<'info> Clone for UncheckedAccount<'info>

fn clone(&self) -> UncheckedAccount<'info>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'info> Debug for UncheckedAccount<'info>

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

Formats the value using the given formatter.

impl<'info> Deref for UncheckedAccount<'info>

type Target = AccountInfo<'info>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Key for UncheckedAccount<'_>

fn key(&self) -> Pubkey

impl<'info> ToAccountInfos<'info> for UncheckedAccount<'info>

fn to_account_infos(&self) -> Vec<AccountInfo<'info>>

impl ToAccountMetas for UncheckedAccount<'_>

fn to_account_metas(&self, is_signer: Option<bool>) -> Vec<AccountMeta>

is_signer is given as an optional override for the signer meta field. This covers the edge case when a program-derived-address needs to relay a transaction from a client to another program but sign the transaction before the relay. The client cannot mark the field as a signer, and so we have to override the is_signer meta field given by the client.