1 use rustc_ast_pretty::pprust;
2 use rustc_expand::base;
3 use syntax::tokenstream::TokenStream;
5 pub fn expand_log_syntax<'cx>(
6 _cx: &'cx mut base::ExtCtxt<'_>,
9 ) -> Box<dyn base::MacResult + 'cx> {
10 println!("{}", pprust::tts_to_string(tts));
12 // any so that `log_syntax` can be invoked as an expression and item.
13 base::DummyResult::any_valid(sp)