fidl_fuchsia_net_neighbor__common/

fidl_fuchsia_net_neighbor__common.rs

// WARNING: This file is machine generated by fidlgen.

#![warn(clippy::all)]
#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]

use bitflags::bitflags;
use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

/// The maximum number of [`EntryIteratorItem`] returned in a
/// [`EntryIterator.GetNext`] response.
pub const MAX_ITEM_BATCH_SIZE: u64 = 256;

#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
#[repr(u32)]
pub enum EntryState {
    /// Reachability is in the process of being confirmed for a newly
    /// created, non-static entry.
    Incomplete = 1,
    /// Positive reachability has been confirmed; the path to the neighbor
    /// is functioning properly.
    Reachable = 2,
    /// Reachability is considered unknown.
    ///
    /// Occurs in one of two ways:
    ///   1. Too much time has elapsed since the last positive reachability
    ///      confirmation was received.
    ///   2. Received a reachability confirmation from a neighbor with a
    ///      different MAC address than the one cached.
    Stale = 3,
    /// A packet was recently sent while reachability was considered
    /// unknown.
    ///
    /// This state is an optimization that gives non-Neighbor-Discovery
    /// related protocols time to confirm reachability after the last
    /// confirmation of reachability has expired due to lack of recent
    /// traffic.
    Delay = 4,
    /// A reachability confirmation is actively sought by periodically
    /// retransmitting reachability probes until a reachability confirmation
    /// is received, or until the maximum number of probes has been sent.
    Probe = 5,
    /// Static entries are explicitly added with [`Controller.AddEntry`].
    /// They do not expire and are not deleted until explicitly removed with
    /// [`Controller.RemoveEntry`].
    Static = 6,
    /// Negative reachability has been confirmed; the path to the neighbor
    /// may not be functioning properly. A reachability confirmation was not
    /// received after transmitting the maximum number of reachability
    /// probes.
    Unreachable = 7,
}

impl EntryState {
    #[inline]
    pub fn from_primitive(prim: u32) -> Option<Self> {
        match prim {
            1 => Some(Self::Incomplete),
            2 => Some(Self::Reachable),
            3 => Some(Self::Stale),
            4 => Some(Self::Delay),
            5 => Some(Self::Probe),
            6 => Some(Self::Static),
            7 => Some(Self::Unreachable),
            _ => None,
        }
    }

    #[inline]
    pub const fn into_primitive(self) -> u32 {
        self as u32
    }
}

#[derive(Clone, Debug, PartialEq)]
pub struct ControllerAddEntryRequest {
    pub interface: u64,
    pub neighbor: fidl_fuchsia_net__common::IpAddress,
    pub mac: fidl_fuchsia_net__common::MacAddress,
}

impl fidl::Persistable for ControllerAddEntryRequest {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct ControllerClearEntriesRequest {
    pub interface: u64,
    pub ip_version: fidl_fuchsia_net__common::IpVersion,
}

impl fidl::Persistable for ControllerClearEntriesRequest {}

#[derive(Clone, Debug, PartialEq)]
pub struct ControllerRemoveEntryRequest {
    pub interface: u64,
    pub neighbor: fidl_fuchsia_net__common::IpAddress,
}

impl fidl::Persistable for ControllerRemoveEntryRequest {}

#[derive(Clone, Debug, PartialEq)]
pub struct EntryIteratorGetNextResponse {
    pub events: Vec<EntryIteratorItem>,
}

impl fidl::Persistable for EntryIteratorGetNextResponse {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct IdleEvent;

impl fidl::Persistable for IdleEvent {}

/// Information on a neighboring device in the local network.
///
/// There are two types of entries available in the neighbor table.
///   1. Dynamic entries are discovered automatically by neighbor discovery
///      protocols (e.g. ARP, NDP). These protocols will attempt to reconfirm
///      reachability with the device once its `state` becomes
///      [`EntryState.STALE`].
///   2. Static entries are explicitly added by a user with
///      [`Controller.AddEntry`] and have no expiration. Their `state` is
///      always [`EntryState.STATIC`].
#[derive(Clone, Debug, Default, PartialEq)]
pub struct Entry {
    /// Identifier for the interface used for communicating with the neighbor.
    ///
    /// Required.
    pub interface: Option<u64>,
    /// IP address of the neighbor.
    ///
    /// Required.
    pub neighbor: Option<fidl_fuchsia_net__common::IpAddress>,
    /// State of the entry within the Neighbor Unreachability Detection (NUD)
    /// state machine.
    ///
    /// Modeled after RFC 4861 section 7.3.2. Descriptions are kept
    /// implementation-independent by using a set of generic terminology.
    ///
    /// ,------------------------------------------------------------------.
    /// | Generic Term              | ARP Term    | NDP Term               |
    /// |---------------------------+-------------+------------------------|
    /// | Reachability Probe        | ARP Request | Neighbor Solicitation  |
    /// | Reachability Confirmation | ARP Reply   | Neighbor Advertisement |
    /// `---------------------------+-------------+------------------------'
    ///
    /// Required.
    pub state: Option<EntryState>,
    /// MAC address of the neighboring device's network interface controller.
    ///
    /// May be absent for dynamic entries in [`EntryState.UNREACHABLE`] or
    /// [`EntryState.INCOMPLETE`].
    pub mac: Option<fidl_fuchsia_net__common::MacAddress>,
    /// Timestamp when this entry has changed `state`.
    ///
    /// Required.
    pub updated_at: Option<i64>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for Entry {}

#[derive(Clone, Debug, Default, PartialEq)]
pub struct EntryIteratorOptions {
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for EntryIteratorOptions {}

#[derive(Clone, Debug, PartialEq)]
pub enum EntryIteratorItem {
    /// An existing entry in the neighbor table. Does not indicate that
    /// an event occurred.
    Existing(Entry),
    /// Empty event for indicating there are no more
    /// [`EntryIteratorItem.existing`] items to yield.
    Idle(IdleEvent),
    /// Event indicating a new entry has been added to the neighbor
    /// table.
    Added(Entry),
    /// Event indicating an entry has changed.
    Changed(Entry),
    /// Event indicating an entry has been removed from the neighbor
    /// table.
    Removed(Entry),
}

impl EntryIteratorItem {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::Existing(_) => 1,
            Self::Idle(_) => 2,
            Self::Added(_) => 3,
            Self::Changed(_) => 4,
            Self::Removed(_) => 5,
        }
    }
}

impl fidl::Persistable for EntryIteratorItem {}

pub mod controller_ordinals {
    pub const ADD_ENTRY: u64 = 0x778c829580aa23ac;
    pub const REMOVE_ENTRY: u64 = 0xfd0b52f53a0f815;
    pub const CLEAR_ENTRIES: u64 = 0x33e53d9769a999d;
}

pub mod entry_iterator_ordinals {
    pub const GET_NEXT: u64 = 0x6d03407803da8647;
}

pub mod view_ordinals {
    pub const OPEN_ENTRY_ITERATOR: u64 = 0x3c9531929383e911;
}

mod internal {
    use super::*;
    unsafe impl fidl::encoding::TypeMarker for EntryState {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            std::mem::align_of::<u32>()
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            std::mem::size_of::<u32>()
        }

        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            false
        }
    }

    impl fidl::encoding::ValueTypeMarker for EntryState {
        type Borrowed<'a> = Self;
        #[inline(always)]
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            *value
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Self, D> for EntryState {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Self>(offset);
            encoder.write_num(self.into_primitive(), offset);
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for EntryState {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Incomplete
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let prim = decoder.read_num::<u32>(offset);

            *self = Self::from_primitive(prim).ok_or(fidl::Error::InvalidEnumValue)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for ControllerAddEntryRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for ControllerAddEntryRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            32
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<ControllerAddEntryRequest, D> for &ControllerAddEntryRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ControllerAddEntryRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ControllerAddEntryRequest, D>::encode(
                (
                    <u64 as fidl::encoding::ValueTypeMarker>::borrow(&self.interface),
                    <fidl_fuchsia_net__common::IpAddress as fidl::encoding::ValueTypeMarker>::borrow(&self.neighbor),
                    <fidl_fuchsia_net__common::MacAddress as fidl::encoding::ValueTypeMarker>::borrow(&self.mac),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<u64, D>,
            T1: fidl::encoding::Encode<fidl_fuchsia_net__common::IpAddress, D>,
            T2: fidl::encoding::Encode<fidl_fuchsia_net__common::MacAddress, D>,
        > fidl::encoding::Encode<ControllerAddEntryRequest, D> for (T0, T1, T2)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ControllerAddEntryRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(24);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            self.2.encode(encoder, offset + 24, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for ControllerAddEntryRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                interface: fidl::new_empty!(u64, D),
                neighbor: fidl::new_empty!(fidl_fuchsia_net__common::IpAddress, D),
                mac: fidl::new_empty!(fidl_fuchsia_net__common::MacAddress, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(24) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffff000000000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 24 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(u64, D, &mut self.interface, decoder, offset + 0, _depth)?;
            fidl::decode!(
                fidl_fuchsia_net__common::IpAddress,
                D,
                &mut self.neighbor,
                decoder,
                offset + 8,
                _depth
            )?;
            fidl::decode!(
                fidl_fuchsia_net__common::MacAddress,
                D,
                &mut self.mac,
                decoder,
                offset + 24,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for ControllerClearEntriesRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for ControllerClearEntriesRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<ControllerClearEntriesRequest, D>
        for &ControllerClearEntriesRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ControllerClearEntriesRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ControllerClearEntriesRequest, D>::encode(
                (
                    <u64 as fidl::encoding::ValueTypeMarker>::borrow(&self.interface),
                    <fidl_fuchsia_net__common::IpVersion as fidl::encoding::ValueTypeMarker>::borrow(&self.ip_version),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<u64, D>,
            T1: fidl::encoding::Encode<fidl_fuchsia_net__common::IpVersion, D>,
        > fidl::encoding::Encode<ControllerClearEntriesRequest, D> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ControllerClearEntriesRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(8);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for ControllerClearEntriesRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                interface: fidl::new_empty!(u64, D),
                ip_version: fidl::new_empty!(fidl_fuchsia_net__common::IpVersion, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(8) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffffffff00000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 8 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(u64, D, &mut self.interface, decoder, offset + 0, _depth)?;
            fidl::decode!(
                fidl_fuchsia_net__common::IpVersion,
                D,
                &mut self.ip_version,
                decoder,
                offset + 8,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for ControllerRemoveEntryRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for ControllerRemoveEntryRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            24
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<ControllerRemoveEntryRequest, D> for &ControllerRemoveEntryRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ControllerRemoveEntryRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<ControllerRemoveEntryRequest, D>::encode(
                (
                    <u64 as fidl::encoding::ValueTypeMarker>::borrow(&self.interface),
                    <fidl_fuchsia_net__common::IpAddress as fidl::encoding::ValueTypeMarker>::borrow(&self.neighbor),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<u64, D>,
            T1: fidl::encoding::Encode<fidl_fuchsia_net__common::IpAddress, D>,
        > fidl::encoding::Encode<ControllerRemoveEntryRequest, D> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<ControllerRemoveEntryRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for ControllerRemoveEntryRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                interface: fidl::new_empty!(u64, D),
                neighbor: fidl::new_empty!(fidl_fuchsia_net__common::IpAddress, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(u64, D, &mut self.interface, decoder, offset + 0, _depth)?;
            fidl::decode!(
                fidl_fuchsia_net__common::IpAddress,
                D,
                &mut self.neighbor,
                decoder,
                offset + 8,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for EntryIteratorGetNextResponse {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EntryIteratorGetNextResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<EntryIteratorGetNextResponse, D> for &EntryIteratorGetNextResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EntryIteratorGetNextResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<EntryIteratorGetNextResponse, D>::encode(
                (
                    <fidl::encoding::Vector<EntryIteratorItem, 256> as fidl::encoding::ValueTypeMarker>::borrow(&self.events),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<fidl::encoding::Vector<EntryIteratorItem, 256>, D>,
        > fidl::encoding::Encode<EntryIteratorGetNextResponse, D> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EntryIteratorGetNextResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for EntryIteratorGetNextResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { events: fidl::new_empty!(fidl::encoding::Vector<EntryIteratorItem, 256>, D) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::Vector<EntryIteratorItem, 256>, D, &mut self.events, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for IdleEvent {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for IdleEvent {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            1
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            1
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<IdleEvent, D>
        for &IdleEvent
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<IdleEvent>(offset);
            encoder.write_num(0u8, offset);
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for IdleEvent {
        #[inline(always)]
        fn new_empty() -> Self {
            Self
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            match decoder.read_num::<u8>(offset) {
                0 => Ok(()),
                _ => Err(fidl::Error::Invalid),
            }
        }
    }

    impl Entry {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.updated_at {
                return 5;
            }
            if let Some(_) = self.mac {
                return 4;
            }
            if let Some(_) = self.state {
                return 3;
            }
            if let Some(_) = self.neighbor {
                return 2;
            }
            if let Some(_) = self.interface {
                return 1;
            }
            0
        }
    }

    impl fidl::encoding::ValueTypeMarker for Entry {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Entry {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Entry, D> for &Entry {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Entry>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;
            if 1 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (1 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<u64, D>(
                self.interface.as_ref().map(<u64 as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 2 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (2 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<fidl_fuchsia_net__common::IpAddress, D>(
            self.neighbor.as_ref().map(<fidl_fuchsia_net__common::IpAddress as fidl::encoding::ValueTypeMarker>::borrow),
            encoder, offset + cur_offset, depth
        )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 3 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (3 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<EntryState, D>(
                self.state.as_ref().map(<EntryState as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 4 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (4 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<fidl_fuchsia_net__common::MacAddress, D>(
            self.mac.as_ref().map(<fidl_fuchsia_net__common::MacAddress as fidl::encoding::ValueTypeMarker>::borrow),
            encoder, offset + cur_offset, depth
        )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 5 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (5 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<i64, D>(
                self.updated_at.as_ref().map(<i64 as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for Entry {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 1 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <u64 as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.interface.get_or_insert_with(|| fidl::new_empty!(u64, D));
                fidl::decode!(u64, D, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 2 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size = <fidl_fuchsia_net__common::IpAddress as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.neighbor.get_or_insert_with(|| {
                    fidl::new_empty!(fidl_fuchsia_net__common::IpAddress, D)
                });
                fidl::decode!(
                    fidl_fuchsia_net__common::IpAddress,
                    D,
                    val_ref,
                    decoder,
                    inner_offset,
                    inner_depth
                )?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 3 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <EntryState as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.state.get_or_insert_with(|| fidl::new_empty!(EntryState, D));
                fidl::decode!(EntryState, D, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 4 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size = <fidl_fuchsia_net__common::MacAddress as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.mac.get_or_insert_with(|| {
                    fidl::new_empty!(fidl_fuchsia_net__common::MacAddress, D)
                });
                fidl::decode!(
                    fidl_fuchsia_net__common::MacAddress,
                    D,
                    val_ref,
                    decoder,
                    inner_offset,
                    inner_depth
                )?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 5 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <i64 as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.updated_at.get_or_insert_with(|| fidl::new_empty!(i64, D));
                fidl::decode!(i64, D, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    impl EntryIteratorOptions {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            0
        }
    }

    impl fidl::encoding::ValueTypeMarker for EntryIteratorOptions {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EntryIteratorOptions {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<EntryIteratorOptions, D>
        for &EntryIteratorOptions
    {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EntryIteratorOptions>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;

            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for EntryIteratorOptions {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for EntryIteratorItem {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EntryIteratorItem {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<EntryIteratorItem, D>
        for &EntryIteratorItem
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EntryIteratorItem>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
                EntryIteratorItem::Existing(ref val) => {
                    fidl::encoding::encode_in_envelope::<Entry, D>(
                        <Entry as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
                EntryIteratorItem::Idle(ref val) => {
                    fidl::encoding::encode_in_envelope::<IdleEvent, D>(
                        <IdleEvent as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
                EntryIteratorItem::Added(ref val) => {
                    fidl::encoding::encode_in_envelope::<Entry, D>(
                        <Entry as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
                EntryIteratorItem::Changed(ref val) => {
                    fidl::encoding::encode_in_envelope::<Entry, D>(
                        <Entry as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
                EntryIteratorItem::Removed(ref val) => {
                    fidl::encoding::encode_in_envelope::<Entry, D>(
                        <Entry as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
            }
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for EntryIteratorItem {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Existing(fidl::new_empty!(Entry, D))
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            #[allow(unused_variables)]
            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            let (ordinal, inlined, num_bytes, num_handles) =
                fidl::encoding::decode_union_inline_portion(decoder, offset)?;

            let member_inline_size = match ordinal {
                1 => <Entry as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                2 => <IdleEvent as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                3 => <Entry as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                4 => <Entry as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                5 => <Entry as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                _ => return Err(fidl::Error::UnknownUnionTag),
            };

            if inlined != (member_inline_size <= 4) {
                return Err(fidl::Error::InvalidInlineBitInEnvelope);
            }
            let _inner_offset;
            if inlined {
                decoder.check_inline_envelope_padding(offset + 8, member_inline_size)?;
                _inner_offset = offset + 8;
            } else {
                depth.increment()?;
                _inner_offset = decoder.out_of_line_offset(member_inline_size)?;
            }
            match ordinal {
                1 => {
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Existing(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = EntryIteratorItem::Existing(fidl::new_empty!(Entry, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Existing(ref mut val) = self {
                        fidl::decode!(Entry, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                2 => {
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Idle(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = EntryIteratorItem::Idle(fidl::new_empty!(IdleEvent, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Idle(ref mut val) = self {
                        fidl::decode!(IdleEvent, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                3 => {
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Added(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = EntryIteratorItem::Added(fidl::new_empty!(Entry, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Added(ref mut val) = self {
                        fidl::decode!(Entry, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                4 => {
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Changed(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = EntryIteratorItem::Changed(fidl::new_empty!(Entry, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Changed(ref mut val) = self {
                        fidl::decode!(Entry, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                5 => {
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Removed(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = EntryIteratorItem::Removed(fidl::new_empty!(Entry, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let EntryIteratorItem::Removed(ref mut val) = self {
                        fidl::decode!(Entry, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                ordinal => panic!("unexpected ordinal {:?}", ordinal),
            }
            if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize) {
                return Err(fidl::Error::InvalidNumBytesInEnvelope);
            }
            if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                return Err(fidl::Error::InvalidNumHandlesInEnvelope);
            }
            Ok(())
        }
    }
}