Generators can resume

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index 67fe3ccf1fb4266416dd6f8bf169031a79785c74..3e573d9c13ad63326a8143b651fd8a172b71617f 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -159,6 +159,8 @@ var kMessages = {
   invalid_module_path:           ["Module does not export '", "%0", "', or export is not itself a module"],
   module_type_error:             ["Module '", "%0", "' used improperly"],
   module_export_undefined:       ["Export '", "%0", "' is not defined in module"],
+  generator_running:             ["Generator is already running"],

[Michael Starzinger, 2013/04/21 22:45:21]

Since generators throw Error objects for now, let's move this to the top into
the section for Error objects (this is the section for SyntaxError).

[wingo, 2013/04/23 13:51:04]

Done.

+  generator_finished:            ["Generator has already finished"]
 };