arinc424 0.1.1

ARINC 424 parser
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// Copyright 2024 Joe Pearson
//
// 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 super::{Field, FieldError};
use std::str::FromStr;

#[derive(Debug, PartialEq)]
pub enum WaypointUsage {
    HiLoAltitude,
    HiAltitude,
    LoAltitude,
    TerminalOnly,
    RNAV,
}

impl Field for WaypointUsage {}

impl FromStr for WaypointUsage {
    type Err = FieldError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match &s[29..31] {
            " B" => Ok(Self::HiLoAltitude),
            " H" => Ok(Self::HiAltitude),
            " L" => Ok(Self::LoAltitude),
            "  " => Ok(Self::TerminalOnly),
            "R " => Ok(Self::RNAV),
            _ => Err(FieldError::InvalidValue("unknown waypoint usage")),
        }
    }
}