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#![cfg_attr(not(feature = "std"), no_std)]
#[cfg(not(feature = "std"))]
use core as std;
#[derive(Clone, Debug, PartialOrd, PartialEq, Ord, Eq, Hash)]
#[cfg_attr(feature = "serde-1", derive(serde::Serialize, serde::Deserialize))]
pub struct Relevant;
impl Relevant {
pub fn dispose(self) {
std::mem::forget(self)
}
}
impl Drop for Relevant {
fn drop(&mut self) {
dropped()
}
}
cfg_if::cfg_if! {
if #[cfg(feature = "panic")] {
macro_rules! sink {
($($x:tt)*) => { panic!($($x)*) };
}
} else if #[cfg(feature = "log")] {
macro_rules! sink {
($($x:tt)*) => { log::error!($($x)*) };
}
} else if #[cfg(feature = "std")] {
macro_rules! sink {
($($x:tt)*) => { eprintln!($($x)*) };
}
} else {
macro_rules! sink {
($($x:tt)*) => { panic!($($x)*) };
}
}
}
cfg_if::cfg_if! {
if #[cfg(all(not(feature = "panic"), any(feature = "std", feature = "log"), feature = "backtrace"))] {
fn whine() {
let backtrace = backtrace::Backtrace::new();
sink!("Values of this type can't be dropped!. Trace: {:#?}", backtrace)
}
} else {
fn whine() {
sink!("Values of this type can't be dropped!")
}
}
}
cfg_if::cfg_if! {
if #[cfg(feature = "std")] {
fn dropped() {
if !std::thread::panicking() {
whine()
}
}
} else {
fn dropped() {
whine()
}
}
}