pub struct AccountInfo<'a> {
    pub key: &'a Pubkey,
    pub is_signer: bool,
    pub is_writable: bool,
    pub lamports: Rc<RefCell<&'a mut u64>>,
    pub data: Rc<RefCell<&'a mut [u8]>>,
    pub owner: &'a Pubkey,
    pub executable: bool,
    pub rent_epoch: u64,
}
Expand description

Account information

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§key: &'a Pubkey

Public key of the account

§is_signer: bool

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

§is_writable: bool

Is the account writable?

§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 Pubkey

Program that owns this account

§executable: bool

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

§rent_epoch: u64

The epoch at which this account will next owe rent

Implementations§

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impl<'a> AccountInfo<'a>

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

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pub fn unsigned_key(&self) -> &Pubkey

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pub fn lamports(&self) -> u64

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

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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.

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pub fn data_len(&self) -> usize

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

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pub fn data_is_empty(&self) -> bool

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

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

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

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

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

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pub fn realloc(&self, new_len: usize, zero_init: bool) -> Result<(), ProgramError>

Realloc the account’s data and optionally zero-initialize the new memory.

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

Note: Memory used to grow is already zero-initialized upon program entrypoint and re-zeroing it wastes compute units. If within the same call a program reallocs from larger to smaller and back to larger again the new space could contain stale data. Pass true for zero_init in this case, otherwise compute units will be wasted re-zero-initializing.

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.

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

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

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pub fn deserialize_data<T>(&self) -> Result<T, Box<ErrorKind, Global>>where T: DeserializeOwned,

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pub fn serialize_data<T>(&self, state: &T) -> Result<(), Box<ErrorKind, Global>>where T: Serialize,

Trait Implementations§

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

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

Converts this type into a shared reference of the (usually inferred) input type.
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impl<'a> Clone for AccountInfo<'a>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for AccountInfo<'a>

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

Formats the value using the given formatter. Read more
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impl<'a, T> From<T> for AccountInfo<'a>where T: IntoAccountInfo<'a>,

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

Converts to this type from the input type.

Auto Trait Implementations§

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impl<'a> !RefUnwindSafe for AccountInfo<'a>

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impl<'a> !Send for AccountInfo<'a>

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impl<'a> !Sync for AccountInfo<'a>

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impl<'a> Unpin for AccountInfo<'a>

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impl<'a> !UnwindSafe for AccountInfo<'a>

Blanket Implementations§

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impl<T> AbiExample for T

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default fn example() -> T

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V