src/connectivity/bluetooth/lib/fuchsia-bluetooth/src/types.rs

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

use fidl_fuchsia_bluetooth_sys as sys;
use std::fmt;

pub use {self::uuid::*, address::*, bonding_data::*, channel::*, host_info::*, id::*, peer::*};

mod address;
/// Types related to bonding data. This module defines helper functions for unit tests that utilize
/// proptest.
pub mod bonding_data;
/// Channel type
mod channel;
pub mod host_info;
mod id;
pub mod io_capabilities;
/// Bluetooth LowEnergy types
pub mod le;
pub mod pairing_options;
mod peer;
mod uuid;

macro_rules! bt_fidl_wrap {
    ($outer:ident) => {
        pub struct $outer(fidl_fuchsia_bluetooth::$outer);

        impl From<fidl_fuchsia_bluetooth::$outer> for $outer {
            fn from(b: fidl_fuchsia_bluetooth::$outer) -> $outer {
                $outer(b)
            }
        }

        impl Into<fidl_fuchsia_bluetooth::$outer> for $outer {
            fn into(self) -> fidl_fuchsia_bluetooth::$outer {
                self.0
            }
        }
    };
}

bt_fidl_wrap!(Status);
bt_fidl_wrap!(Bool);
bt_fidl_wrap!(Int8);
bt_fidl_wrap!(UInt16);

impl fmt::Display for Bool {
    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(fmt, "{}", self.0.value)
    }
}

impl fmt::Display for Status {
    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(fmt, "{:?}", self.0.error)
    }
}

/// A struct indicating either A or B or Both, but not neither - at least one must be present
/// Useful when indicating support for Le or BrEdr, where dual mode is also supported but we
/// require at least one. This avoids extra error checking that would be required if two options
/// were used.
#[derive(Clone, Debug, PartialEq)]
pub enum OneOrBoth<L, R> {
    Left(L),
    Both(L, R),
    Right(R),
}

impl<L, R> OneOrBoth<L, R> {
    pub fn left(&self) -> Option<&L> {
        match &self {
            OneOrBoth::Left(l) => Some(l),
            OneOrBoth::Both(l, _) => Some(l),
            OneOrBoth::Right(_) => None,
        }
    }
    pub fn right(&self) -> Option<&R> {
        match &self {
            OneOrBoth::Left(_) => None,
            OneOrBoth::Both(_, r) => Some(r),
            OneOrBoth::Right(r) => Some(r),
        }
    }
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub enum Technology {
    LE,
    Classic,
    DualMode,
}

impl From<sys::TechnologyType> for Technology {
    fn from(tech: sys::TechnologyType) -> Self {
        match tech {
            sys::TechnologyType::LowEnergy => Technology::LE,
            sys::TechnologyType::Classic => Technology::Classic,
            sys::TechnologyType::DualMode => Technology::DualMode,
        }
    }
}

impl From<Technology> for sys::TechnologyType {
    fn from(tech: Technology) -> Self {
        match tech {
            Technology::LE => sys::TechnologyType::LowEnergy,
            Technology::Classic => sys::TechnologyType::Classic,
            Technology::DualMode => sys::TechnologyType::DualMode,
        }
    }
}