Struct ReturnData 

pub struct ReturnData { /* private fields */ }

Stack-backed snapshot of CPI return data.

The 1 KiB buffer is deliberately left uninitialized until the sol_get_return_data syscall fills it; only the syscall-initialized prefix (data_len bytes) is ever exposed to callers.

Implementations

impl ReturnData

pub const fn program_id(&self) -> &Address

Program id that set this return data.

pub fn data(&self) -> &[u8]

Bytes copied into this snapshot.

pub const fn len(&self) -> usize

Copied byte length.

pub const fn actual_len(&self) -> usize

Runtime-reported byte length before truncation to Hopper’s stack buffer.

pub const fn is_empty(&self) -> bool

Whether no bytes were copied.

pub const fn is_truncated(&self) -> bool

Whether the runtime reported more bytes than Hopper copied.

pub fn copy_to(&self, dst: &mut [u8]) -> ProgramResult

Copy return bytes into dst.

pub fn read_pod<T: Pod>(&self) -> Result<T, ProgramError>

Read a Pod value from the first bytes of the return-data payload.

Trait Implementations

impl Clone for ReturnData

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReturnData

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

Formats the value using the given formatter.