third_party/rust_crates/vendor/itertools/src/impl_macros.rs

//! 
//! Implementation's internal macros

macro_rules! debug_fmt_fields {
    ($tyname:ident, $($($field:ident).+),*) => {
        fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
            f.debug_struct(stringify!($tyname))
                $(
              .field(stringify!($($field).+), &self.$($field).+)
              )*
              .finish()
        }
    }
}