[gnome-builder] rust: add support for renaming symbols

[Christian Hergert <chergert src gnome org>]

commit d9e16d87d89a0f36970dd6ebfb3cfe8d095438b3
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 25 23:04:35 2016 -0700

    rust: add support for renaming symbols
    
    This allows you to rename a symbol with ctrl+shift+r when the cursor is
    on a symbol in the editor.

 plugins/rust-langserv/rust-langserv.plugin    |    2 +-
 plugins/rust-langserv/rust_langserv_plugin.py |    6 ++++++
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/plugins/rust-langserv/rust-langserv.plugin b/plugins/rust-langserv/rust-langserv.plugin
index f339cdd..141403b 100644
--- a/plugins/rust-langserv/rust-langserv.plugin
+++ b/plugins/rust-langserv/rust-langserv.plugin
@@ -9,5 +9,5 @@ Builtin=true
 X-Completion-Provider-Languages=rust
 X-Diagnostic-Provider-Languages=rust
 X-Highlighter-Languages=rust
+X-Rename-Provider-Languages=rust
 X-Symbol-Resolver-Languages=rust
-
diff --git a/plugins/rust-langserv/rust_langserv_plugin.py b/plugins/rust-langserv/rust_langserv_plugin.py
index 63da4e1..d083773 100644
--- a/plugins/rust-langserv/rust_langserv_plugin.py
+++ b/plugins/rust-langserv/rust_langserv_plugin.py
@@ -149,11 +149,17 @@ class RustCompletionProvider(Ide.LangservCompletionProvider):
         super().__init__(*args, **kwargs)
         self.connect('notify::context', lambda *_: RustService.bind_client(self))
 
+class RustRenameProvider(Ide.LangservRenameProvider):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.connect('notify::context', lambda *_: RustService.bind_client(self))
+
 class RustSymbolResolver(Ide.LangservSymbolResolver):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.connect('notify::context', lambda *_: RustService.bind_client(self))
 
+
 """
 class RustHighlighter(Ide.LangservHighlighter):
     def __init__(self, *args, **kwargs):