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macro_rules! values {
($($token:ident($value:literal) $(as $inner:ty)? => $attr:meta,)*) => {
#[derive(Debug)]
pub enum TokenKind {
$(
#[$attr]
$token $($inner)? = $value,
)*
}
};
}
//~^^^^^ ERROR expected one of `(`, `,`, `=`, `{`, or `}`, found `ty` metavariable
//~| ERROR macro expansion ignores `ty` metavariable and any tokens following
values!(STRING(1) as (String) => cfg(test),);
//~^ ERROR expected one of `!` or `::`, found `<eof>`
fn main() {}
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