Struct __AccountInfo

#[repr(C)]
pub struct __AccountInfo<'a> {
    pub key: &'a Address,
    pub lamports: Rc<RefCell<&'a mut u64>>,
    pub data: Rc<RefCell<&'a mut [u8]>>,
    pub owner: &'a Address,
    pub _unused: u64,
    pub is_signer: bool,
    pub is_writable: bool,
    pub executable: bool,
}

Account information

Fields

key: &'a Address

Public key of the account

lamports: Rc<RefCell<&'a mut u64>>

The lamports in the account. Modifiable by programs.

data: Rc<RefCell<&'a mut [u8]>>

The data held in this account. Modifiable by programs.

owner: &'a Address

Program that owns this account

_unused: u64

👎Deprecated since 3.0.0: Do not use this field, it will not exist in ABIv2

Formerly, the epoch at which this account will next owe rent. A field must remain because the runtime depends on the exact layout of this struct.

is_signer: bool

Was the transaction signed by this account’s public key?

is_writable: bool

Is the account writable?

executable: bool

This account’s data contains a loaded program (and is now read-only)

Implementations

impl<'a> AccountInfo<'a>

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)

pub fn new( key: &'a Address, is_signer: bool, is_writable: bool, lamports: &'a mut u64, data: &'a mut [u8], owner: &'a Address, executable: bool, ) -> AccountInfo<'a>

Trait Implementations

impl<'a> AsRef<AccountInfo<'a>> for AccountInfo<'a>

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

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

impl<'a> Clone for AccountInfo<'a>

fn clone(&self) -> AccountInfo<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AccountInfo<'_>

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

Formats the value using the given formatter.

impl<'a, T> From<T> for AccountInfo<'a>

where T: IntoAccountInfo<'a>,

fn from(src: T) -> AccountInfo<'a>

Converts to this type from the input type.