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//! The `bitcast` and `bitflags_bits` macros.
#![allow(unused_macros)]
// Ensure that the source and destination types are both primitive integer
// types and the same size, and then bitcast.
macro_rules! bitcast {
($x:expr) => {{
if false {
// Ensure the source and destinations are primitive integer types.
let _ = !$x;
let _ = $x as u8;
0
} else if false {
// Ensure that the source and destinations are the same size.
// SAFETY: This code is under an `if false`.
#[allow(unsafe_code, unused_unsafe, clippy::useless_transmute)]
unsafe {
::core::mem::transmute($x)
}
} else {
// Do the conversion.
$x as _
}
}};
}
/// Return a [`bitcast`] of the value of `$x.bits()`, where `$x` is a
/// `bitflags` type.
macro_rules! bitflags_bits {
($x:expr) => {{
bitcast!($x.bits())
}};
}
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