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