Include static methods on traits in reexports.

src/librustc/metadata/encoder.rs

@@ -363,6 +363,47 @@ fn encode_path(ecx: @EncodeContext,
     ebml_w.end_tag();
 }
 
+fn encode_reexported_static_method(ecx: @EncodeContext,
+                                   ebml_w: &mut writer::Encoder,
+                                   exp: &middle::resolve::Export2,
+                                   m: @ty::method) {
+    debug!("(encode static trait method) reexport '%s::%s'",
+            *exp.name, *ecx.tcx.sess.str_of(m.ident));
+    ebml_w.start_tag(tag_items_data_item_reexport);
+    ebml_w.start_tag(tag_items_data_item_reexport_def_id);
+    ebml_w.wr_str(def_to_str(m.def_id));
+    ebml_w.end_tag();
+    ebml_w.start_tag(tag_items_data_item_reexport_name);
+    ebml_w.wr_str(*exp.name + "::" + *ecx.tcx.sess.str_of(m.ident));
+    ebml_w.end_tag();
+    ebml_w.end_tag();
+}
+
+fn encode_reexported_static_methods(ecx: @EncodeContext,
+                                    ebml_w: &mut writer::Encoder,
+                                    mod_path: &[ast_map::path_elt],
+                                    exp: &middle::resolve::Export2) {
+    match ecx.tcx.trait_methods_cache.find(&exp.def_id) {
+        Some(methods) => {
+            match ecx.tcx.items.find(&exp.def_id.node) {
+                Some(&ast_map::node_item(_, path)) => {
+                    if mod_path != *path {
+                        for methods.each |&m| {
+                            if m.self_ty  == ast::sty_static {
+                                encode_reexported_static_method(ecx,
+                                                                ebml_w,
+                                                                exp, m);
+                            }
+                        }
+                    }
+                }
+                _ => {}
+            }
+        }
+        _ => {}
+    }
+}
+
 fn encode_info_for_mod(ecx: @EncodeContext,
                        ebml_w: &mut writer::Encoder,
                        md: &_mod,
@@ -413,6 +454,7 @@ fn encode_info_for_mod(ecx: @EncodeContext,
                 ebml_w.wr_str(*exp.name);
                 ebml_w.end_tag();
                 ebml_w.end_tag();
+                encode_reexported_static_methods(ecx, ebml_w, path, exp);
             }
         }
         None => {

src/test/auxiliary/mod_trait_with_static_methods_lib.rs

@@ -0,0 +1,22 @@
+// 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.
+
+pub use sub_foo::Foo;
+
+pub mod sub_foo {
+    pub trait Foo {
+        pub fn foo() -> Self;
+    }
+
+    impl Foo for int {
+        pub fn foo() -> int { 42 }
+    }
+}
+

src/test/run-pass/trait_with_static_methods_cross_crate.rs

@@ -0,0 +1,19 @@
+// 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.
+
+// xfail-fast
+// aux-build:mod_trait_with_static_methods_lib.rs
+extern mod mod_trait_with_static_methods_lib;
+
+use mod_trait_with_static_methods_lib::Foo;
+
+pub fn main() {
+    assert!(42 == Foo::foo());
+}