dash7_alp/spec/v1_2/action/
indirect_forward.rs

1use crate::{
2    codec::{Codec, StdError, WithOffset, WithSize},
3    spec::v1_2::operand,
4};
5
6#[derive(Clone, Debug, PartialEq)]
7pub struct IndirectForward {
8    // ALP_SPEC Ask for response ?
9    pub resp: bool,
10    pub interface: operand::IndirectInterface,
11}
12impl std::fmt::Display for IndirectForward {
13    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
14        write!(
15            f,
16            "[{}]{}",
17            if self.resp { "R" } else { "-" },
18            self.interface
19        )
20    }
21}
22impl Codec for IndirectForward {
23    type Error = StdError;
24    fn encoded_size(&self) -> usize {
25        1 + self.interface.encoded_size()
26    }
27    unsafe fn encode_in(&self, out: &mut [u8]) -> usize {
28        let overload = match self.interface {
29            operand::IndirectInterface::Overloaded(_) => true,
30            operand::IndirectInterface::NonOverloaded(_) => false,
31        };
32        out[0] |= ((overload as u8) << 7) | ((self.resp as u8) << 6);
33        1 + super::serialize_all!(&mut out[1..], &self.interface)
34    }
35    fn decode(out: &[u8]) -> Result<WithSize<Self>, WithOffset<Self::Error>> {
36        if out.is_empty() {
37            Err(WithOffset::new_head(Self::Error::MissingBytes(1)))
38        } else {
39            let mut offset = 0;
40            let WithSize {
41                value: op1,
42                size: op1_size,
43            } = operand::IndirectInterface::decode(out)?;
44            offset += op1_size;
45            Ok(WithSize {
46                value: Self {
47                    resp: out[0] & 0x40 != 0,
48                    interface: op1,
49                },
50                size: offset,
51            })
52        }
53    }
54}