Struct InstructionDataReader 

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

Borsh-compatible instruction data decoder.

Reads fields from instruction data in order.

Implementations

impl<'a> InstructionDataReader<'a>

pub fn new(data: &'a [u8]) -> Self

Create a new reader over data.

pub fn read_u8(&mut self) -> Result<u8, SignerError>

Read a u8.

pub fn read_u16(&mut self) -> Result<u16, SignerError>

Read a u16 (little-endian).

pub fn read_u32(&mut self) -> Result<u32, SignerError>

Read a u32 (little-endian).

pub fn read_u64(&mut self) -> Result<u64, SignerError>

Read a u64 (little-endian).

pub fn read_bool(&mut self) -> Result<bool, SignerError>

Read a bool.

pub fn read_bytes(&mut self, n: usize) -> Result<&'a [u8], SignerError>

Read exactly n bytes.

pub fn read_pubkey(&mut self) -> Result<[u8; 32], SignerError>

Read a 32-byte public key.

pub fn read_string(&mut self) -> Result<String, SignerError>

Read a Borsh-encoded string (u32 len + UTF-8).

pub fn remaining(&self) -> &'a [u8]

Remaining unread bytes.

pub fn is_empty(&self) -> bool

Whether all data has been consumed.