File: log_syntax.rs

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rustc 1.48.0%2Bdfsg1-2
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use rustc_ast::tokenstream::TokenStream;
use rustc_ast_pretty::pprust;
use rustc_expand::base;

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)
}