compiler/rustc_type_ir/src/ir_print.rs

use std::fmt;

use crate::{Interner, TraitRef};

pub trait IrPrint<T> {
    fn print(t: &T, fmt: &mut fmt::Formatter<'_>) -> fmt::Result;
    fn print_debug(t: &T, fmt: &mut fmt::Formatter<'_>) -> fmt::Result;
}

macro_rules! define_display_via_print {
    ($($ty:ident),+ $(,)?) => {
        $(
            impl<I: Interner> fmt::Display for $ty<I> {
                fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
                    <I as IrPrint<$ty<I>>>::print(self, fmt)
                }
            }

            impl<I: Interner> fmt::Debug for $ty<I> {
                fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
                    <I as IrPrint<$ty<I>>>::print_debug(self, fmt)
                }
            }
        )*
    }
}

define_display_via_print!(TraitRef,);