fidl_fuchsia_ui_input3__common/

fidl_fuchsia_ui_input3__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;

bitflags! {
    /// A bit field of lock states which are currently active.
    ///
    /// Lock state reports whether the lock is active for the keys which have a lock
    /// state (need to be pressed once to activate, and one more time to deactivate).
    /// A set bit denotes active lock state.
    ///
    /// For example, when Caps Lock is active, i.e. pressing 'a' produces the effect
    /// of 'A' appearing on the screen, the `CAPS_LOCK` bit will be active.
    ///
    /// The bit values in `LockState` are chosen to correspond to the values in
    /// `Modifiers`, to the extent that this is doable in the long run.
    #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
    pub struct LockState: u64 {
        /// Applies when the `CAPS_LOCK` modifier is locked.
        ///
        /// Users should bear in mind that the effect of `CAPS_LOCK` is limited to
        /// alphabetic keys (not even *alphanumerics*) mainly.
        ///
        /// For example, pressing `a` on a US QWERTY keyboard while `CAPS_LOCK`
        /// state is locked results in the key meaning `A`, just as if the Shift modifier
        /// was used.  However, pressing `[` when `CAPS_LOCK` is locked gives `[`,
        /// even though Shift+`[` gives `{`.
        ///
        /// The position of alphabetic keys may vary depending on the keymap in
        /// current use too.
        const CAPS_LOCK = 1;
        /// Applies when the `NUM_LOCK` modifier is locked.
        const NUM_LOCK = 2;
        /// Applies when the `SCROLL_LOCK` modifier is locked.
        const SCROLL_LOCK = 4;
        /// Applies when the `FUNCTION` modifier is locked.
        const FUNCTION_LOCK = 8;
        /// Applies when the `SYMBOL` modifier is locked.
        const SYMBOL_LOCK = 16;
    }
}

impl LockState {
    #[inline(always)]
    pub fn from_bits_allow_unknown(bits: u64) -> Self {
        Self::from_bits_retain(bits)
    }

    #[inline(always)]
    pub fn has_unknown_bits(&self) -> bool {
        self.get_unknown_bits() != 0
    }

    #[inline(always)]
    pub fn get_unknown_bits(&self) -> u64 {
        self.bits() & !Self::all().bits()
    }
}

bitflags! {
    /// Declares all the modifiers supported by Fuchsia's input subsystem.
    ///
    /// Modifiers are special keys that modify the purpose or the function
    /// of other keys when used in combination with them.  In the Modifiers type,
    /// a bit is set if the specific modifier key is actuated (held down),
    /// irrespective of whether the modifier has an associated lock state or not.
    ///
    /// **NOTE:** If you want to examine the lock state (such as whether Caps
    /// Lock needs to turn all letters into uppercase),you want [LockState]
    /// instead.
    ///
    /// Somewhat specially, and as a convenience for the users, the modifiers that
    /// have "left" and "right" flavors have special bit values which can be used
    /// if the distinction between sides does not matter.
    #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
    pub struct Modifiers: u64 {
        /// Applies when the `CAPS_LOCK` modifier is actuated.
        const CAPS_LOCK = 1;
        /// Applies when the `NUM_LOCK` modifier is actuated.
        const NUM_LOCK = 2;
        /// Applies when the `SCROLL_LOCK` modifier is actuated.
        const SCROLL_LOCK = 4;
        /// Applies when the `FUNCTION` modifier is actuated.
        const FUNCTION = 8;
        /// Applies when the `SYMBOL` modifier is actuated.
        const SYMBOL = 16;
        /// Applies when the left SHIFT modifier is actuated.
        const LEFT_SHIFT = 32;
        /// Applies when the right SHIFT modifier is actuated.
        const RIGHT_SHIFT = 64;
        /// Applies when either `LEFT_SHIFT` or `RIGHT_SHIFT` modifier is actuated.
        ///
        /// This bit mask a convenience to test for either `LEFT_SHIFT`
        /// or `RIGHT_SHIFT`.
        const SHIFT = 128;
        /// Applies when the left `ALT` modifier is actuated.
        const LEFT_ALT = 256;
        /// Applies when the right `ALT` modifier is actuated.
        const RIGHT_ALT = 512;
        /// Applies when either the left `ALT` or the right `ALT` modifier
        /// is actuated.
        const ALT = 1024;
        /// Applies when the `ALT_GRAPH` modifier is actuated.
        const ALT_GRAPH = 2048;
        /// Applies when the `LEFT_META` modifier is actuated.
        const LEFT_META = 4096;
        /// Applies when the `RIGHT_META` modifier is actuated.
        const RIGHT_META = 8192;
        /// Applies when either `LEFT_META` or `RIGHT_META` modifier is actuated.
        const META = 16384;
        /// Applies when the `LEFT_CTRL` modifier is actuated.
        const LEFT_CTRL = 32768;
        /// Applies when the `RIGHT_CTRL` modifier is actuated.
        const RIGHT_CTRL = 65536;
        /// Applies when either `LEFT_CTRL` or `RIGHT_CTRL` modifier is actuated.
        const CTRL = 131072;
    }
}

impl Modifiers {
    #[inline(always)]
    pub fn from_bits_allow_unknown(bits: u64) -> Self {
        Self::from_bits_retain(bits)
    }

    #[inline(always)]
    pub fn has_unknown_bits(&self) -> bool {
        self.get_unknown_bits() != 0
    }

    #[inline(always)]
    pub fn get_unknown_bits(&self) -> u64 {
        self.bits() & !Self::all().bits()
    }
}

/// Return type for clients key events listener.
///
/// We do not expect new values to be added to this enum.
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
#[repr(u32)]
pub enum KeyEventStatus {
    /// The key event was handled and its further propagation should be stopped.
    Handled = 1,
    /// The key event wasn't handled and should be delivered to other clients or listeners.
    NotHandled = 2,
}

impl KeyEventStatus {
    #[inline]
    pub fn from_primitive(prim: u32) -> Option<Self> {
        match prim {
            1 => Some(Self::Handled),
            2 => Some(Self::NotHandled),
            _ => None,
        }
    }

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

/// Type of the keyboard key input event.
///
/// We do not expect new values to be added into this enum.
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
#[repr(u32)]
pub enum KeyEventType {
    /// Key is actuated.
    ///
    /// Receiving this event type means that a key has been actuated
    /// at the timestamp when the event is received, and while the event
    /// recipient is focused.
    ///
    /// For example, if the key is a keyboard key, then it was just
    /// pressed.
    Pressed = 1,
    /// Key is no longer actuated.
    ///
    /// Receiving this event type means that a key has been de-actuated
    /// at the timestamp when the event is received, and while the event
    /// recipient is focused.
    ///
    /// For example, if the key is a keyboard key, then it was just
    /// released.
    Released = 2,
    /// Key was actuated while the client wasn't able to receive it,
    /// and is still actuated now that the client is able to receive
    /// key events.
    ///
    /// This may happen in a few ways:
    ///
    ///    - A new device was connected while its key was actuated.
    ///    - The key was actuated while the event recipient did not
    ///      have focus.
    ///
    /// Therefore, this is not a "regular" key actuation. It reports
    /// now that the key has been actuated in the unknown past. Some
    /// event recipients may therefore decide that this is not an
    /// actionable key event, while some others may decide that it is.
    ///
    /// For example, recipients that trigger some user action may
    /// decide to ignore `SYNC` events, to avoid spurious actions. In
    /// contrast, recipients that keep track of the keyboard
    /// state may want to consider a `SYNC` event as a signal
    /// to update the key's state to actuated.
    Sync = 3,
    /// Key may have been actuated, but its actuation has
    /// become invalid due to an event other than a key
    /// de-actuation.
    ///
    /// This may happen in a few ways:
    ///
    ///    - A device was disconnected while its key was actuated.
    ///    - The event recipient just lost focus.
    ///
    /// Therefore, this is not a "regular" key de-actuation. It reports
    /// the key is no longer validly actuated due to an event other than
    /// a key release. Some event recipients may therefore decide that
    /// this is not an actionable key event, while some others may
    /// decide that it is.
    ///
    /// For example, recipients which trigger some user action may
    /// decide to ignore `CANCEL` events, to avoid spurious actions. In
    /// contrast, recipients that keep track of the keyboard
    /// state may want to consider a `CANCEL` event as a signal to update
    /// the key's state to being de-actuated.
    Cancel = 4,
}

impl KeyEventType {
    #[inline]
    pub fn from_primitive(prim: u32) -> Option<Self> {
        match prim {
            1 => Some(Self::Pressed),
            2 => Some(Self::Released),
            3 => Some(Self::Sync),
            4 => Some(Self::Cancel),
            _ => None,
        }
    }

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

/// NonPrintableKey represents the meaning of a non-symbolic key on a keyboard.
///
/// The definition of each key is derived from [W3C named values of a key
/// attribute][1].
///
/// ## API version 9 and onwards
///
/// Starting from API version 9, the enum value space is subdivided based on the
/// subsection numbers of the section [Named Key Attribute Values][1], multiplied
/// by 0x1000.
///
/// For example, the keys from section [3.10 Multimedia keys][2] will be located
/// at `0xa000`-`0xafff`. The values and reservations that were present
/// in this enum prior to the introduction of the convention have not been moved,
/// and values that go logically into pre-existing sections have been inserted
/// into their logical place using the prior convention (see below). This allows
/// us to extract the section ranges if this is for some reason useful to the
/// application.
///
/// ## Prior to API version 9
///
/// The space of the nonprintable keys is subdivided roughly to correspond to the
/// subsections of Section 3 of the document Named Key Attribute Values.
/// The choice for the section values is arbitrary, so long as blocks of
/// values are allocated at once, and the keys with similar purpose are kept
/// together.
///
/// ## Reserved ranges
///
/// The space of possible values for [NonPrintableKey] is subdivided into a
/// number of ranges, with the intention that the enum values are placed in
/// the appropriate range when added.
///
/// * Special keys: 0x00-0x10
/// * Modifier keys: 0x11-0x30
/// * Whitespace keys: 0x31-0x40
/// * Navigation keys: 0x61-0x80
/// * General-purpose function keys: 0x9000-0x9FFF
///
/// [1]: https://www.w3.org/TR/uievents-key/#named-key-attribute-values
/// [2]: https://www.w3.org/TR/uievents-key/#keys-multimedia
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub enum NonPrintableKey {
    /// This key value is used when an implementation is unable to identify
    /// another key value, due to either hardware, platform, or software
    /// constraints.
    Unidentified,
    /// The Alt (Alternative) key.
    ///
    /// This key enables the alternate modifier function for interpreting concurrent
    /// or subsequent keyboard input.
    /// This key value is also used for the Apple Option key.
    Alt,
    /// The Alternate Graphics (AltGr or AltGraph).
    ///
    /// This key is used enable the ISO Level 3 shift modifier (the standard Shift key is the level
    /// 2 modifier). See [ISO9995-1].
    ///
    /// [ISO9995-1]: http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=51645
    AltGraph,
    /// The Caps Lock (Capital) key.
    ///
    /// Toggle capital character lock function for interpreting subsequent keyboard input event.
    CapsLock,
    /// The Control or Ctrl key, to enable control modifier function for interpreting concurrent or
    /// subsequent keyboard input.
    Control,
    /// The Function switch Fn key.
    ///
    /// Activating this key simultaneously with another key changes that key’s value to an alternate
    /// character or function. This key is often handled directly in the keyboard hardware and does
    /// not usually generate key events.
    Fn,
    /// The Function-Lock (FnLock or F-Lock) key.
    ///
    /// Activating this key switches the mode of the keyboard to changes some keys' values to an
    /// alternate character or function. This key is often handled directly in the keyboard hardware
    /// and does not usually generate key events.
    FnLock,
    /// The Meta key, to enable meta modifier function for interpreting concurrent or subsequent
    /// keyboard input.
    ///
    /// This key value is used for the Windows Logo key and the Apple Command or ⌘ key.
    Meta,
    /// The NumLock or Number Lock key, to toggle numpad mode function for interpreting subsequent
    /// keyboard input.
    NumLock,
    /// The Scroll Lock key, to toggle between scrolling and cursor movement modes.
    ScrollLock,
    /// The Shift key, to enable shift modifier function for interpreting concurrent or subsequent
    /// keyboard input.
    Shift,
    /// The Symbol modifier key (used on some virtual keyboards).
    Symbol,
    /// The Symbol Lock key.
    SymbolLock,
    /// The Hyper key. A legacy modifier.
    Hyper,
    /// The Super key. A legacy modifier.
    Super,
    /// The Enter or ↵ key, to activate current selection or accept current input.
    /// This key value is also used for the Return (Macintosh numpad) key.
    Enter,
    /// The Horizontal Tabulation Tab key.
    Tab,
    /// Delete the character immediately preceding the cursor (i.e. the
    /// character to the left for LTR languages).
    Backspace,
    /// The down arrow navigation key.
    Down,
    /// The left arrow navigation key.
    Left,
    /// The right arrow navigation key.
    Right,
    /// The up arrow navigation key.
    Up,
    /// The "End" key.
    End,
    /// The "Home" key.
    Home,
    /// The "Page Down" key.
    PageDown,
    /// The "Page Up" key.
    PageUp,
    /// The `Escape` or `Esc` key.
    Escape,
    /// The Select key. Used to select the window of a task to focus on.
    Select,
    /// The Brightness Down key. Typically controls the display brightness.
    BrightnessDown,
    /// The Brightness Up key. Typically controls the display brightness.
    BrightnessUp,
    /// The F1 key, a general purpose function key, as index 1.
    F1,
    /// The F2 key, a general purpose function key, as index 2.
    F2,
    /// The F3 key, a general purpose function key, as index 3.
    F3,
    /// The F4 key, a general purpose function key, as index 4.
    F4,
    /// The F5 key, a general purpose function key, as index 5.
    F5,
    /// The F6 key, a general purpose function key, as index 6.
    F6,
    /// The F7 key, a general purpose function key, as index 7.
    F7,
    /// The F8 key, a general purpose function key, as index 8.
    F8,
    /// The F9 key, a general purpose function key, as index 9.
    F9,
    /// The F10 key, a general purpose function key, as index 10.
    F10,
    /// The F11 key, a general purpose function key, as index 11.
    F11,
    /// The F1 key, a general purpose function key, as index 12.
    F12,
    /// General purpose virtual function key, as index 1.
    Soft1,
    /// General purpose virtual function key, as index 2.
    Soft2,
    /// General purpose virtual function key, as index 3.
    Soft3,
    /// General purpose virtual function key, as index 4.
    Soft4,
    /// Pause the currently playing media.
    ///
    /// NOTE: Media controller devices should use this value rather than
    /// `PAUSE` for their pause keys.
    MediaPlayPause,
    /// Decrease audio volume.
    AudioVolumeDown,
    /// Increase audio volume.
    AudioVolumeUp,
    /// Toggle between muted state and prior volume level.
    AudioVolumeMute,
    /// Navigate to previous content or page in current history.
    BrowserBack,
    /// Open the list of browser favorites.
    BrowserFavorites,
    /// Navigate to next content or page in current history.
    BrowserForward,
    /// Go to the user’s preferred home page.
    BrowserHome,
    /// Refresh the current page or content.
    BrowserRefresh,
    /// Call up the user’s preferred search page.
    BrowserSearch,
    BrowserStop,
    /// Toggle between full-screen and scaled content, or alter magnification level.
    ZoomToggle,
    #[doc(hidden)]
    __SourceBreaking {
        unknown_ordinal: u32,
    },
}

/// Pattern that matches an unknown `NonPrintableKey` member.
#[macro_export]
macro_rules! NonPrintableKeyUnknown {
    () => {
        _
    };
}

impl NonPrintableKey {
    #[inline]
    pub fn from_primitive(prim: u32) -> Option<Self> {
        match prim {
            0 => Some(Self::Unidentified),
            17 => Some(Self::Alt),
            18 => Some(Self::AltGraph),
            19 => Some(Self::CapsLock),
            20 => Some(Self::Control),
            21 => Some(Self::Fn),
            22 => Some(Self::FnLock),
            23 => Some(Self::Meta),
            24 => Some(Self::NumLock),
            25 => Some(Self::ScrollLock),
            26 => Some(Self::Shift),
            27 => Some(Self::Symbol),
            28 => Some(Self::SymbolLock),
            29 => Some(Self::Hyper),
            30 => Some(Self::Super),
            49 => Some(Self::Enter),
            50 => Some(Self::Tab),
            65 => Some(Self::Backspace),
            97 => Some(Self::Down),
            98 => Some(Self::Left),
            99 => Some(Self::Right),
            100 => Some(Self::Up),
            101 => Some(Self::End),
            102 => Some(Self::Home),
            103 => Some(Self::PageDown),
            104 => Some(Self::PageUp),
            24581 => Some(Self::Escape),
            24588 => Some(Self::Select),
            28672 => Some(Self::BrightnessDown),
            28673 => Some(Self::BrightnessUp),
            36865 => Some(Self::F1),
            36866 => Some(Self::F2),
            36867 => Some(Self::F3),
            36868 => Some(Self::F4),
            36869 => Some(Self::F5),
            36870 => Some(Self::F6),
            36871 => Some(Self::F7),
            36872 => Some(Self::F8),
            36873 => Some(Self::F9),
            36874 => Some(Self::F10),
            36875 => Some(Self::F11),
            36876 => Some(Self::F12),
            36881 => Some(Self::Soft1),
            36882 => Some(Self::Soft2),
            36883 => Some(Self::Soft3),
            36884 => Some(Self::Soft4),
            40968 => Some(Self::MediaPlayPause),
            49162 => Some(Self::AudioVolumeDown),
            49163 => Some(Self::AudioVolumeUp),
            49164 => Some(Self::AudioVolumeMute),
            61440 => Some(Self::BrowserBack),
            61441 => Some(Self::BrowserFavorites),
            61442 => Some(Self::BrowserForward),
            61443 => Some(Self::BrowserHome),
            61444 => Some(Self::BrowserRefresh),
            61445 => Some(Self::BrowserSearch),
            61446 => Some(Self::BrowserStop),
            73799 => Some(Self::ZoomToggle),
            _ => None,
        }
    }

    #[inline]
    pub fn from_primitive_allow_unknown(prim: u32) -> Self {
        match prim {
            0 => Self::Unidentified,
            17 => Self::Alt,
            18 => Self::AltGraph,
            19 => Self::CapsLock,
            20 => Self::Control,
            21 => Self::Fn,
            22 => Self::FnLock,
            23 => Self::Meta,
            24 => Self::NumLock,
            25 => Self::ScrollLock,
            26 => Self::Shift,
            27 => Self::Symbol,
            28 => Self::SymbolLock,
            29 => Self::Hyper,
            30 => Self::Super,
            49 => Self::Enter,
            50 => Self::Tab,
            65 => Self::Backspace,
            97 => Self::Down,
            98 => Self::Left,
            99 => Self::Right,
            100 => Self::Up,
            101 => Self::End,
            102 => Self::Home,
            103 => Self::PageDown,
            104 => Self::PageUp,
            24581 => Self::Escape,
            24588 => Self::Select,
            28672 => Self::BrightnessDown,
            28673 => Self::BrightnessUp,
            36865 => Self::F1,
            36866 => Self::F2,
            36867 => Self::F3,
            36868 => Self::F4,
            36869 => Self::F5,
            36870 => Self::F6,
            36871 => Self::F7,
            36872 => Self::F8,
            36873 => Self::F9,
            36874 => Self::F10,
            36875 => Self::F11,
            36876 => Self::F12,
            36881 => Self::Soft1,
            36882 => Self::Soft2,
            36883 => Self::Soft3,
            36884 => Self::Soft4,
            40968 => Self::MediaPlayPause,
            49162 => Self::AudioVolumeDown,
            49163 => Self::AudioVolumeUp,
            49164 => Self::AudioVolumeMute,
            61440 => Self::BrowserBack,
            61441 => Self::BrowserFavorites,
            61442 => Self::BrowserForward,
            61443 => Self::BrowserHome,
            61444 => Self::BrowserRefresh,
            61445 => Self::BrowserSearch,
            61446 => Self::BrowserStop,
            73799 => Self::ZoomToggle,
            unknown_ordinal => Self::__SourceBreaking { unknown_ordinal },
        }
    }

    #[inline]
    pub fn unknown() -> Self {
        Self::__SourceBreaking { unknown_ordinal: 0x0 }
    }

    #[inline]
    pub const fn into_primitive(self) -> u32 {
        match self {
            Self::Unidentified => 0,
            Self::Alt => 17,
            Self::AltGraph => 18,
            Self::CapsLock => 19,
            Self::Control => 20,
            Self::Fn => 21,
            Self::FnLock => 22,
            Self::Meta => 23,
            Self::NumLock => 24,
            Self::ScrollLock => 25,
            Self::Shift => 26,
            Self::Symbol => 27,
            Self::SymbolLock => 28,
            Self::Hyper => 29,
            Self::Super => 30,
            Self::Enter => 49,
            Self::Tab => 50,
            Self::Backspace => 65,
            Self::Down => 97,
            Self::Left => 98,
            Self::Right => 99,
            Self::Up => 100,
            Self::End => 101,
            Self::Home => 102,
            Self::PageDown => 103,
            Self::PageUp => 104,
            Self::Escape => 24581,
            Self::Select => 24588,
            Self::BrightnessDown => 28672,
            Self::BrightnessUp => 28673,
            Self::F1 => 36865,
            Self::F2 => 36866,
            Self::F3 => 36867,
            Self::F4 => 36868,
            Self::F5 => 36869,
            Self::F6 => 36870,
            Self::F7 => 36871,
            Self::F8 => 36872,
            Self::F9 => 36873,
            Self::F10 => 36874,
            Self::F11 => 36875,
            Self::F12 => 36876,
            Self::Soft1 => 36881,
            Self::Soft2 => 36882,
            Self::Soft3 => 36883,
            Self::Soft4 => 36884,
            Self::MediaPlayPause => 40968,
            Self::AudioVolumeDown => 49162,
            Self::AudioVolumeUp => 49163,
            Self::AudioVolumeMute => 49164,
            Self::BrowserBack => 61440,
            Self::BrowserFavorites => 61441,
            Self::BrowserForward => 61442,
            Self::BrowserHome => 61443,
            Self::BrowserRefresh => 61444,
            Self::BrowserSearch => 61445,
            Self::BrowserStop => 61446,
            Self::ZoomToggle => 73799,
            Self::__SourceBreaking { unknown_ordinal } => unknown_ordinal,
        }
    }

    #[inline]
    pub fn is_unknown(&self) -> bool {
        match self {
            Self::__SourceBreaking { unknown_ordinal: _ } => true,
            _ => false,
        }
    }
}

#[derive(Clone, Debug, PartialEq)]
pub struct KeyEventInjectorInjectRequest {
    pub key_event: KeyEvent,
}

impl fidl::Persistable for KeyEventInjectorInjectRequest {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct KeyEventInjectorInjectResponse {
    pub status: KeyEventStatus,
}

impl fidl::Persistable for KeyEventInjectorInjectResponse {}

#[derive(Clone, Debug, PartialEq)]
pub struct KeyboardListenerOnKeyEventRequest {
    pub event: KeyEvent,
}

impl fidl::Persistable for KeyboardListenerOnKeyEventRequest {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct KeyboardListenerOnKeyEventResponse {
    pub status: KeyEventStatus,
}

impl fidl::Persistable for KeyboardListenerOnKeyEventResponse {}

/// A Keyboard event generated to reflect key input. `timestamp` and `type` are required.
/// At least one of `key` and `key_meaning`  must be set for a valid event.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct KeyEvent {
    /// Time in nanoseconds when the event was recorded, in the `CLOCK_MONOTONIC` time base.
    /// The timestamp is **required** on every key event, and users can expect that it
    /// will always be present.
    pub timestamp: Option<i64>,
    /// Type of event.
    pub type_: Option<KeyEventType>,
    /// Identifies the key ignoring modifiers, layout, prior key events, etc. This is called
    /// the "physical key" on some platforms. In cases where the key event did not originate
    /// from a physical keyboard (e.g. onscreen keyboard) this field may be empty.
    pub key: Option<fidl_fuchsia_input__common::Key>,
    /// Modifiers in effect at the time of the event.
    /// Example:
    ///  CapsLock is off, user presses CapsLock, then A, then releases both.
    ///  Event sequence is as follows:
    ///  1. type: Pressed, key: CapsLock, modifiers: None
    ///  2. type: Pressed, key: A, modifiers: CapsLock
    ///  3. type: Released, key: CapsLock, modifiers: CapsLock
    ///  4. type: Released, key: A, modifiers: CapsLock
    ///
    ///  CapsLock is on, user presses CapsLock, then A, then releases both.
    ///  1. type: Pressed, key: CapsLock, modifiers: CapsLock
    ///  2. type: Pressed, key: A, modifiers: None
    ///  3. type: Released, key: CapsLock, modifiers: None
    ///  4. type: Released, key: A, modifiers: None
    pub modifiers: Option<Modifiers>,
    /// Meaning of the key.
    pub key_meaning: Option<KeyMeaning>,
    /// The sequence number of this `KeyEvent` in the sequence of autorepeated
    /// keys.
    ///
    /// Unset if this event has been generated in the immediate response to an
    /// input from the keyboard driver.  If the `KeyEvent` has been generated
    /// through the autorepeat mechanism, this property is set and is
    /// incremented by one for each successive generated key event.
    pub repeat_sequence: Option<u32>,
    /// The lock state in effect at the time of the event.
    ///
    /// For example, if CapsLock effect is turned on (pressing 'a' results in
    /// the effect 'A'), the corresponding bit in the lock state is set.
    ///
    /// NOTE: `LockState` is different from whether the CapsLock modifier key
    /// is actuated or not. `LockState.CAPS_LOCK` can be active even if the
    /// Caps Lock key is not currently actuated.
    pub lock_state: Option<LockState>,
    /// Identifies the device originating this event.
    pub device_id: Option<u32>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for KeyEvent {}

/// The meaning of the key press. This is typically the Unicode codepoint inserted
/// by this event, or an enum representing a key that corresponds to whitespace or
/// is otherwise unprintable.
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub enum KeyMeaning {
    /// The Unicode codepoint representing character typed, if any.
    /// * In Dart and Go, this corresponds to a `rune`.
    /// * In Rust, this corresponds to a `char`.
    /// * In C and C++, this corresponds to ICU's UChar32.
    Codepoint(u32),
    /// The meaning of the key for key events with no corresponding symbol.
    NonPrintableKey(NonPrintableKey),
}

impl KeyMeaning {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::Codepoint(_) => 1,
            Self::NonPrintableKey(_) => 2,
        }
    }
}

impl fidl::Persistable for KeyMeaning {}

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

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

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

    impl fidl::encoding::ValueTypeMarker for LockState {
        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 LockState {
        #[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.bits(), offset);
            Ok(())
        }
    }

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

        #[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::<u64>(offset);
            *self = Self::from_bits_allow_unknown(prim);
            Ok(())
        }
    }
    unsafe impl fidl::encoding::TypeMarker for Modifiers {
        type Owned = Self;

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

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

    impl fidl::encoding::ValueTypeMarker for Modifiers {
        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 Modifiers {
        #[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.bits(), offset);
            Ok(())
        }
    }

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

        #[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::<u64>(offset);
            *self = Self::from_bits_allow_unknown(prim);
            Ok(())
        }
    }
    unsafe impl fidl::encoding::TypeMarker for KeyEventStatus {
        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 KeyEventStatus {
        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 KeyEventStatus {
        #[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 KeyEventStatus {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Handled
        }

        #[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(())
        }
    }
    unsafe impl fidl::encoding::TypeMarker for KeyEventType {
        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 KeyEventType {
        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 KeyEventType {
        #[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 KeyEventType {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Pressed
        }

        #[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(())
        }
    }
    unsafe impl fidl::encoding::TypeMarker for NonPrintableKey {
        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 {
            false
        }

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

    impl fidl::encoding::ValueTypeMarker for NonPrintableKey {
        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 NonPrintableKey
    {
        #[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 NonPrintableKey {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::unknown()
        }

        #[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_allow_unknown(prim);
            Ok(())
        }
    }

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

    unsafe impl fidl::encoding::TypeMarker for KeyEventInjectorInjectRequest {
        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<KeyEventInjectorInjectRequest, D>
        for &KeyEventInjectorInjectRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<KeyEventInjectorInjectRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<KeyEventInjectorInjectRequest, D>::encode(
                (<KeyEvent as fidl::encoding::ValueTypeMarker>::borrow(&self.key_event),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<KeyEvent, D>>
        fidl::encoding::Encode<KeyEventInjectorInjectRequest, 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::<KeyEventInjectorInjectRequest>(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 KeyEventInjectorInjectRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { key_event: fidl::new_empty!(KeyEvent, 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!(KeyEvent, D, &mut self.key_event, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

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

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

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<KeyEventInjectorInjectResponse, D>
        for &KeyEventInjectorInjectResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<KeyEventInjectorInjectResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<KeyEventInjectorInjectResponse, D>::encode(
                (<KeyEventStatus as fidl::encoding::ValueTypeMarker>::borrow(&self.status),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<KeyEventStatus, D>>
        fidl::encoding::Encode<KeyEventInjectorInjectResponse, 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::<KeyEventInjectorInjectResponse>(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 KeyEventInjectorInjectResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { status: fidl::new_empty!(KeyEventStatus, 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!(KeyEventStatus, D, &mut self.status, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

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

    unsafe impl fidl::encoding::TypeMarker for KeyboardListenerOnKeyEventRequest {
        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<KeyboardListenerOnKeyEventRequest, D>
        for &KeyboardListenerOnKeyEventRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<KeyboardListenerOnKeyEventRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<KeyboardListenerOnKeyEventRequest, D>::encode(
                (<KeyEvent as fidl::encoding::ValueTypeMarker>::borrow(&self.event),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<KeyEvent, D>>
        fidl::encoding::Encode<KeyboardListenerOnKeyEventRequest, 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::<KeyboardListenerOnKeyEventRequest>(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 KeyboardListenerOnKeyEventRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { event: fidl::new_empty!(KeyEvent, 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!(KeyEvent, D, &mut self.event, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

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

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

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<KeyboardListenerOnKeyEventResponse, D>
        for &KeyboardListenerOnKeyEventResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<KeyboardListenerOnKeyEventResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<KeyboardListenerOnKeyEventResponse, D>::encode(
                (<KeyEventStatus as fidl::encoding::ValueTypeMarker>::borrow(&self.status),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<KeyEventStatus, D>>
        fidl::encoding::Encode<KeyboardListenerOnKeyEventResponse, 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::<KeyboardListenerOnKeyEventResponse>(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 KeyboardListenerOnKeyEventResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { status: fidl::new_empty!(KeyEventStatus, 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!(KeyEventStatus, D, &mut self.status, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl KeyEvent {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.device_id {
                return 8;
            }
            if let Some(_) = self.lock_state {
                return 7;
            }
            if let Some(_) = self.repeat_sequence {
                return 6;
            }
            if let Some(_) = self.key_meaning {
                return 5;
            }
            if let Some(_) = self.modifiers {
                return 4;
            }
            if let Some(_) = self.key {
                return 3;
            }
            if let Some(_) = self.type_ {
                return 2;
            }
            if let Some(_) = self.timestamp {
                return 1;
            }
            0
        }
    }

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

    unsafe impl fidl::encoding::TypeMarker for KeyEvent {
        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<KeyEvent, D> for &KeyEvent {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<KeyEvent>(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::<i64, D>(
                self.timestamp.as_ref().map(<i64 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::<KeyEventType, D>(
                self.type_.as_ref().map(<KeyEventType 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::<fidl_fuchsia_input__common::Key, D>(
                self.key.as_ref().map(
                    <fidl_fuchsia_input__common::Key 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::<Modifiers, D>(
                self.modifiers.as_ref().map(<Modifiers 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::<KeyMeaning, D>(
                self.key_meaning
                    .as_ref()
                    .map(<KeyMeaning as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 6 > 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 = (6 - 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::<u32, D>(
                self.repeat_sequence.as_ref().map(<u32 as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 7 > 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 = (7 - 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::<LockState, D>(
                self.lock_state
                    .as_ref()
                    .map(<LockState as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 8 > 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 = (8 - 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::<u32, D>(
                self.device_id.as_ref().map(<u32 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 KeyEvent {
        #[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 =
                    <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.timestamp.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;
            _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 =
                    <KeyEventType 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.type_.get_or_insert_with(|| fidl::new_empty!(KeyEventType, D));
                fidl::decode!(KeyEventType, 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 =
                    <fidl_fuchsia_input__common::Key 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
                    .key
                    .get_or_insert_with(|| fidl::new_empty!(fidl_fuchsia_input__common::Key, D));
                fidl::decode!(
                    fidl_fuchsia_input__common::Key,
                    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 =
                    <Modifiers 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.modifiers.get_or_insert_with(|| fidl::new_empty!(Modifiers, D));
                fidl::decode!(Modifiers, 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 =
                    <KeyMeaning 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.key_meaning.get_or_insert_with(|| fidl::new_empty!(KeyMeaning, D));
                fidl::decode!(KeyMeaning, 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 < 6 {
                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 =
                    <u32 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.repeat_sequence.get_or_insert_with(|| fidl::new_empty!(u32, D));
                fidl::decode!(u32, 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 < 7 {
                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 =
                    <LockState 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.lock_state.get_or_insert_with(|| fidl::new_empty!(LockState, D));
                fidl::decode!(LockState, 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 < 8 {
                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 =
                    <u32 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.device_id.get_or_insert_with(|| fidl::new_empty!(u32, D));
                fidl::decode!(u32, 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 fidl::encoding::ValueTypeMarker for KeyMeaning {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for KeyMeaning {
        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<KeyMeaning, D>
        for &KeyMeaning
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<KeyMeaning>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
                KeyMeaning::Codepoint(ref val) => fidl::encoding::encode_in_envelope::<u32, D>(
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                KeyMeaning::NonPrintableKey(ref val) => {
                    fidl::encoding::encode_in_envelope::<NonPrintableKey, D>(
                        <NonPrintableKey as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
            }
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for KeyMeaning {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Codepoint(fidl::new_empty!(u32, 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 => <u32 as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                2 => <NonPrintableKey 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 KeyMeaning::Codepoint(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = KeyMeaning::Codepoint(fidl::new_empty!(u32, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let KeyMeaning::Codepoint(ref mut val) = self {
                        fidl::decode!(u32, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                2 => {
                    #[allow(irrefutable_let_patterns)]
                    if let KeyMeaning::NonPrintableKey(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = KeyMeaning::NonPrintableKey(fidl::new_empty!(NonPrintableKey, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let KeyMeaning::NonPrintableKey(ref mut val) = self {
                        fidl::decode!(NonPrintableKey, 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(())
        }
    }
}