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use byteorder::{BigEndian, ByteOrder, LittleEndian};
pub const ENCAPSULATION_HEADER_SIZE: u64 = 4;
pub trait Encapsulation {
type E: ByteOrder;
fn id() -> [u8; 2];
fn option() -> [u8; 2] {
[0; 2]
}
}
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub enum CdrBe {}
impl Encapsulation for CdrBe {
type E = BigEndian;
fn id() -> [u8; 2] {
[0, 0]
}
}
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub enum CdrLe {}
impl Encapsulation for CdrLe {
type E = LittleEndian;
fn id() -> [u8; 2] {
[0, 1]
}
}
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub enum PlCdrBe {}
impl Encapsulation for PlCdrBe {
type E = BigEndian;
fn id() -> [u8; 2] {
[0, 2]
}
}
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub enum PlCdrLe {}
impl Encapsulation for PlCdrLe {
type E = LittleEndian;
fn id() -> [u8; 2] {
[0, 3]
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_constant() {
assert_eq!(
ENCAPSULATION_HEADER_SIZE,
(CdrBe::id().len() + CdrBe::option().len()) as u64
);
assert_eq!(
ENCAPSULATION_HEADER_SIZE,
(CdrLe::id().len() + CdrLe::option().len()) as u64
);
assert_eq!(
ENCAPSULATION_HEADER_SIZE,
(PlCdrBe::id().len() + PlCdrBe::option().len()) as u64
);
assert_eq!(
ENCAPSULATION_HEADER_SIZE,
(PlCdrLe::id().len() + PlCdrLe::option().len()) as u64
);
}
}