Function decode_instruction_data

pub fn decode_instruction_data<T: Pod>(
    input_with_type: &[u8],
) -> Result<&T, ProgramError>

Utility function for decoding instruction data

Note: This function expects the entire instruction input, including the instruction type as the first byte. This makes the code concise and safe at the expense of clarity, allowing flows such as:

use spl_token_2022::instruction::{decode_instruction_data, decode_instruction_type};
use num_enum::TryFromPrimitive;
use bytemuck::{Pod, Zeroable};

#[repr(u8)]
#[derive(Clone, Copy, TryFromPrimitive)]
enum InstructionType {
    First
}
#[derive(Pod, Zeroable, Copy, Clone)]
#[repr(transparent)]
struct FirstData {
    a: u8,
}
let input = [0, 1];
match decode_instruction_type(&input).unwrap() {
    InstructionType::First => {
        let FirstData { a } = decode_instruction_data(&input).unwrap();
        assert_eq!(*a, 1);
    }
}