Struct AccountKeys

pub struct AccountKeys<'a> { /* private fields */ }

Collection of static and dynamically loaded keys used to load accounts during transaction processing.

Implementations

impl<'a> AccountKeys<'a>

pub fn new( static_keys: &'a [Pubkey], dynamic_keys: Option<&'a LoadedAddresses>, ) -> AccountKeys<'a>

pub fn get(&self, index: usize) -> Option<&'a Pubkey>

Returns the address of the account at the specified index of the list of message account keys constructed from static keys, followed by dynamically loaded writable addresses, and lastly the list of dynamically loaded readonly addresses.

pub fn len(&self) -> usize

Returns the total length of loaded accounts for a message

pub fn is_empty(&self) -> bool

Returns true if this collection of account keys is empty

pub fn iter(&self) -> impl Iterator<Item = &'a Pubkey> + Clone

Iterator for the addresses of the loaded accounts for a message

pub fn compile_instructions( &self, instructions: &[Instruction], ) -> Vec<CompiledInstruction>

Compile instructions using the order of account keys to determine compiled instruction account indexes.

Panics

Panics when compiling fails. See AccountKeys::try_compile_instructions for a full description of failure scenarios.

pub fn try_compile_instructions( &self, instructions: &[Instruction], ) -> Result<Vec<CompiledInstruction>, CompileError>

Compile instructions using the order of account keys to determine compiled instruction account indexes.

Errors

Compilation will fail if any instructions use account keys which are not present in this account key collection.

Compilation will fail if any instructions use account keys which are located at an index which cannot be cast to a u8 without overflow.

Trait Implementations

impl<'a> Clone for AccountKeys<'a>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for AccountKeys<'a>

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

Formats the value using the given formatter.

impl<'a> Default for AccountKeys<'a>

fn default() -> AccountKeys<'a>

Returns the “default value” for a type.

impl Index<usize> for AccountKeys<'_>

type Output = Pubkey

The returned type after indexing.

fn index(&self, index: usize) -> &<AccountKeys<'_> as Index<usize>>::Output

Performs the indexing (container[index]) operation.

impl PartialEq for AccountKeys<'_>

fn eq(&self, other: &AccountKeys<'_>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> Eq for AccountKeys<'a>