1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
mod varint;
pub mod decode;
pub mod encode;
#[cfg(test)]
pub mod test_util;
#[cfg(test)]
pub mod tests;
use decode::DecodeError;
pub use bytes;
pub use codegen::*;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum WireType {
Varint,
I32,
I64,
Len
}
impl WireType {
pub(crate) fn from_tag(tag: u64) -> Result<Self, DecodeError> {
let b = tag as u8 & 0b0000_0111;
match b {
0 => Ok(Self::Varint),
1 => Ok(Self::I64),
2 => Ok(Self::Len),
5 => Ok(Self::I32),
b => Err(DecodeError::InvalidWireType(b))
}
}
pub(crate) fn as_num(&self) -> u8 {
match self {
Self::Varint => 0,
Self::I64 => 1,
Self::Len => 2,
Self::I32 => 5
}
}
pub(crate) const fn can_be_packed(&self) -> bool {
matches!(self, Self::Varint | Self::I32 | Self::I64)
}
pub fn is_len(&self) -> bool {
matches!(self, Self::Len)
}
}