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use crate::{Tag, Tagged};
#[derive(Debug)]
pub struct ConstInt {
buffer: [u8; 10],
n: usize,
}
// XXX only ToBer/ToDer trait supported?
impl Tagged for ConstInt {
const TAG: Tag = Tag::Integer;
}
#[derive(Debug)]
pub struct IntBuilder {}
impl IntBuilder {
pub const fn build(&self, i: u64) -> ConstInt {
let b = i.to_be_bytes();
let mut out = [0u8; 10];
out[0] = 0x4;
let src_len = b.len();
let mut src_index = 0;
while src_index < src_len && b[src_index] == 0 {
src_index += 1;
}
out[1] = (src_len - src_index) as u8;
let mut dst_index = 2;
while src_index < src_len {
out[dst_index] = b[src_index];
src_index += 1;
dst_index += 1;
}
// XXX will not work: we need to allocate a Vec
// also, we cannot just store the bytes (there are extra zeroes at end)
// Integer::new(&out[..dst_index])
ConstInt {
buffer: out,
n: dst_index,
}
}
}
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