| // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| use core::io::WriterUtil; |
| use core::prelude::*; |
| |
| use ast; |
| use codemap; |
| use ext::base::*; |
| use ext::base; |
| use print; |
| |
| pub fn expand_syntax_ext(cx: @ext_ctxt, |
| sp: codemap::span, |
| tt: &[ast::token_tree]) |
| -> base::MacResult { |
| |
| cx.print_backtrace(); |
| io::stdout().write_line( |
| print::pprust::tt_to_str( |
| ast::tt_delim(vec::from_slice(tt)), |
| cx.parse_sess().interner)); |
| |
| //trivial expression |
| MRExpr(@ast::expr { |
| id: cx.next_id(), |
| callee_id: cx.next_id(), |
| node: ast::expr_lit(@codemap::spanned { |
| node: ast::lit_nil, |
| span: sp |
| }), |
| span: sp, |
| }) |
| } |
