#![allow(missing_debug_implementations)]
#![doc(hidden)]
#![unstable(feature = "generic_assert_internals", issue = "44838")]
use crate::fmt::{Debug, Formatter};
use crate::marker::PhantomData;
#[unstable(feature = "generic_assert_internals", issue = "44838")]
pub struct TryCaptureWithoutDebug;
#[unstable(feature = "generic_assert_internals", issue = "44838")]
pub trait TryCaptureGeneric<E, M> {
    fn try_capture(&self, to: &mut Capture<E, M>);
}
impl<E> TryCaptureGeneric<E, TryCaptureWithoutDebug> for &Wrapper<&E> {
    #[inline]
    fn try_capture(&self, _: &mut Capture<E, TryCaptureWithoutDebug>) {}
}
impl<E> Debug for Capture<E, TryCaptureWithoutDebug> {
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), core::fmt::Error> {
        f.write_str("N/A")
    }
}
#[unstable(feature = "generic_assert_internals", issue = "44838")]
pub struct TryCaptureWithDebug;
#[unstable(feature = "generic_assert_internals", issue = "44838")]
pub trait TryCapturePrintable<E, M> {
    fn try_capture(&self, to: &mut Capture<E, M>);
}
impl<E> TryCapturePrintable<E, TryCaptureWithDebug> for Wrapper<&E>
where
    E: Printable,
{
    #[inline]
    fn try_capture(&self, to: &mut Capture<E, TryCaptureWithDebug>) {
        to.elem = Some(*self.0);
    }
}
impl<E> Debug for Capture<E, TryCaptureWithDebug>
where
    E: Printable,
{
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), core::fmt::Error> {
        match self.elem {
            None => f.write_str("N/A"),
            Some(ref value) => Debug::fmt(value, f),
        }
    }
}
#[unstable(feature = "generic_assert_internals", issue = "44838")]
pub struct Capture<E, M> {
    pub elem: Option<E>,
    phantom: PhantomData<M>,
}
impl<M, T> Capture<M, T> {
    #[inline]
    pub const fn new() -> Self {
        Self { elem: None, phantom: PhantomData }
    }
}
#[unstable(feature = "generic_assert_internals", issue = "44838")]
pub struct Wrapper<T>(pub T);
#[unstable(feature = "generic_assert_internals", issue = "44838")]
pub trait Printable: Copy + Debug {}
impl<T> Printable for T where T: Copy + Debug {}