warg_crypto/
prefix.rs

1use crate::ByteVisitor;
2
3pub trait VisitPrefixEncode {
4    fn visit_pe<BV: ?Sized + ByteVisitor>(&self, visitor: &mut PrefixEncodeVisitor<BV>);
5
6    fn visit_bv<BV: ?Sized + ByteVisitor>(&self, visitor: &mut BV) {
7        let mut prefix_visitor = PrefixEncodeVisitor::new(visitor);
8        self.visit_pe(&mut prefix_visitor);
9    }
10}
11
12pub struct PrefixEncodeVisitor<'a, BV>
13where
14    BV: ?Sized + ByteVisitor,
15{
16    buffer: [u8; 10],
17    inner: &'a mut BV,
18}
19
20impl<'a, BV> PrefixEncodeVisitor<'a, BV>
21where
22    BV: ?Sized + ByteVisitor,
23{
24    pub fn new(inner: &'a mut BV) -> Self {
25        Self {
26            buffer: [0u8; 10],
27            inner,
28        }
29    }
30
31    pub fn visit_unsigned(&mut self, i: u64) {
32        let len = leb128::write::unsigned(&mut self.buffer.as_mut_slice(), i).unwrap();
33        self.inner.visit_bytes(&self.buffer[..len]);
34    }
35
36    pub fn visit_str_raw(&mut self, s: &str) {
37        self.inner.visit_bytes(s.as_bytes());
38    }
39
40    pub fn visit_str(&mut self, s: &str) {
41        self.visit_unsigned(s.len() as u64);
42        self.visit_str_raw(s);
43    }
44}
warg_crypto/prefix.rs

warg_crypto/
prefix.rs
