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// Copyright 2023 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::convert::TryFrom;
use crate::packets::{hci, lmp};
pub enum Either<L, R> {
Left(L),
Right(R),
}
macro_rules! impl_try_from {
($T: path) => {
impl<L, R> TryFrom<$T> for Either<L, R>
where
L: TryFrom<$T>,
R: TryFrom<$T>,
{
type Error = ();
fn try_from(value: $T) -> Result<Self, Self::Error> {
let left = L::try_from(value.clone());
if let Ok(left) = left {
return Ok(Either::Left(left));
}
let right = R::try_from(value);
if let Ok(right) = right {
return Ok(Either::Right(right));
}
Err(())
}
}
};
}
impl_try_from!(lmp::LmpPacket);
impl_try_from!(hci::Command);
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