owo_colors/
supports_colors.rsuse core::fmt;
#[cfg(feature = "supports-colors")]
pub struct SupportsColorsDisplay<'a, InVal, Out, ApplyFn>(
pub(crate) &'a InVal,
pub(crate) ApplyFn,
pub(crate) supports_color::Stream,
)
where
InVal: ?Sized,
ApplyFn: Fn(&'a InVal) -> Out;
use crate::OVERRIDE;
macro_rules! impl_fmt_for {
($($trait:path),* $(,)?) => {
$(
impl<'a, In, Out, F> $trait for SupportsColorsDisplay<'a, In, Out, F>
where In: $trait,
Out: $trait,
F: Fn(&'a In) -> Out,
{
#[inline(always)]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let (force_enabled, force_disabled) = OVERRIDE.is_force_enabled_or_disabled();
if force_enabled || (
supports_color::on_cached(self.2)
.map(|level| level.has_basic)
.unwrap_or(false)
&& !force_disabled
) {
<Out as $trait>::fmt(&self.1(self.0), f)
} else {
<In as $trait>::fmt(self.0, f)
}
}
}
)*
};
}
impl_fmt_for! {
fmt::Display,
fmt::Debug,
fmt::UpperHex,
fmt::LowerHex,
fmt::Binary,
fmt::UpperExp,
fmt::LowerExp,
fmt::Octal,
fmt::Pointer,
}