macro_rules! im_str {

($e:literal $(,)?) => {{

const __INPUT: &str = concat!($e, "\0");

{

// Trigger a compile error if there's an interior NUL character.

const _CHECK_NUL: [(); 0] = [(); {

let bytes = __INPUT.as_bytes();

let mut i = 0;

let mut found_nul = 0;

while i < bytes.len() - 1 && found_nul == 0 {

if bytes[i] == 0 {

found_nul = 1;

}

i += 1;

}

found_nul

}];

const RESULT: &'static $crate::ImStr = unsafe {

$crate::__core::mem::transmute::<&'static [u8], &'static $crate::ImStr>(__INPUT.as_bytes())

};

RESULT

}

}};

($e:literal, $($arg:tt)+) => ({

$crate::ImString::new(format!($e, $($arg)*))

});