Auto merge of rust-lang#21542 - vadimcn:fix-exported-macro-paths, r=alexcrichton

... so that `super::foo` gets serialized as `super:: foo`, rather than `super :: foo`.

Author: bors

src/libsyntax/print/pprust.rs

@@ -1164,11 +1164,20 @@ impl<'a> State<'a> {
 
  pub fn print_tts(&mut self, tts: &[ast::TokenTree]) -> IoResult<()> {
  try!(self.ibox(0));
+ let mut suppress_space = false;
  for (i, tt) in tts.iter().enumerate() {
- if i != 0 {
+ if i != 0 && !suppress_space {
  try!(space(&mut self.s));
  }
  try!(self.print_tt(tt));
+ // There should be no space between the module name and the following `::` in paths,
+ // otherwise imported macros get re-parsed from crate metadata incorrectly (#20701)
+ suppress_space = match tt {
+ &ast::TtToken(_, token::Ident(_, token::ModName)) |
+ &ast::TtToken(_, token::MatchNt(_, _, _, token::ModName)) |
+ &ast::TtToken(_, token::SubstNt(_, token::ModName)) => true,
+ _ => false
+ }
  }
  self.end()
  }

src/test/auxiliary/macro_with_super_1.rs

@@ -0,0 +1,26 @@
+// Copyright 2015 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.
+
+#![crate_type = "lib"]
+
+#[macro_export]
+macro_rules! declare {
+ () => (
+ pub fn aaa() {}
+
+ pub mod bbb {
+ use super::aaa;
+
+ pub fn ccc() {
+ aaa();
+ }
+ }
+ )
+}

src/test/run-pass/macro_with_super_2.rs

@@ -0,0 +1,20 @@
+// Copyright 2015 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.
+
+// aux-build:macro_with_super_1.rs
+
+#[macro_use]
+extern crate macro_with_super_1;
+
+declare!();
+
+fn main() {
+ bbb::ccc();
+}