]>
Commit | Line | Data |
---|---|---|
223e47cc LB |
1 | // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
223e47cc LB |
11 | use ast; |
12 | use codemap; | |
223e47cc | 13 | use ext::base; |
85aaf69f | 14 | use feature_gate; |
223e47cc | 15 | use print; |
970d7e83 | 16 | |
1a4d82fc JJ |
17 | pub fn expand_syntax_ext<'cx>(cx: &'cx mut base::ExtCtxt, |
18 | sp: codemap::Span, | |
19 | tts: &[ast::TokenTree]) | |
20 | -> Box<base::MacResult+'cx> { | |
85aaf69f SL |
21 | if !cx.ecfg.enable_log_syntax() { |
22 | feature_gate::emit_feature_err(&cx.parse_sess.span_diagnostic, | |
23 | "log_syntax", | |
24 | sp, | |
e9174d1e | 25 | feature_gate::GateIssue::Language, |
85aaf69f SL |
26 | feature_gate::EXPLAIN_LOG_SYNTAX); |
27 | return base::DummyResult::any(sp); | |
28 | } | |
223e47cc | 29 | |
1a4d82fc JJ |
30 | println!("{}", print::pprust::tts_to_string(tts)); |
31 | ||
32 | // any so that `log_syntax` can be invoked as an expression and item. | |
33 | base::DummyResult::any(sp) | |
223e47cc | 34 | } |