Struct StateCompareAndWriteArgs

#[repr(C)]
pub struct StateCompareAndWriteArgs {
    pub state_ptr: NonNull<Address>,
    pub old_state_ptr: NonNull<<VariableBytes<RECOMMENDED_STATE_CAPACITY> as IoType>::PointerType>,
    pub old_state_size: NonNull<u32>,
    pub new_state_ptr: NonNull<<VariableBytes<RECOMMENDED_STATE_CAPACITY> as IoType>::PointerType>,
    pub new_state_size: NonNull<u32>,
    pub ok_result_ptr: NonNull<bool>,
    pub ok_result_size: *mut u32,
    pub ok_result_capacity: NonNull<u32>,
}

Data structure containing expected input for external method invocation, eventually calling state_compare_and_write() on the other side by the host.

This can be used with Env, though there are helper methods on this provided by extension trait that allow not dealing with this struct directly in simpler cases.

Fields

state_ptr: NonNull<Address>

old_state_ptr: NonNull<<VariableBytes<RECOMMENDED_STATE_CAPACITY> as IoType>::PointerType>

old_state_size: NonNull<u32>

Size of the contents old_state_ptr points to

new_state_ptr: NonNull<<VariableBytes<RECOMMENDED_STATE_CAPACITY> as IoType>::PointerType>

new_state_size: NonNull<u32>

Size of the contents new_state_ptr points to

ok_result_ptr: NonNull<bool>

ok_result_size: *mut u32

Size of the contents ok_result_ptr points to

ok_result_capacity: NonNull<u32>

Capacity of the allocated memory ok_result_ptr points to

Implementations

impl StateCompareAndWriteArgs

pub fn new( state: &Address, old_state: &VariableBytes<RECOMMENDED_STATE_CAPACITY>, new_state: &VariableBytes<RECOMMENDED_STATE_CAPACITY>, ok_result: &mut MaybeUninit<bool>, ok_result_size: &mut u32, ) -> Self

Create a new instance

Trait Implementations

impl Debug for StateCompareAndWriteArgs

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

Formats the value using the given formatter.

impl ExternalArgs for StateCompareAndWriteArgs

const FINGERPRINT: MethodFingerprint

Fingerprint of the method being called

const METADATA: &[u8] = METADATA

Metadata that corresponds to a method being called