1 files changed, 27 insertions, 0 deletions
diff --git a/railties/lib/rails/vendor/thor-0.11.6/lib/thor/error.rb b/railties/lib/rails/vendor/thor-0.11.6/lib/thor/error.rb
new file mode 100644
index 0000000000..f9b31a35d1
--- /dev/null
+++ b/railties/lib/rails/vendor/thor-0.11.6/lib/thor/error.rb
@@ -0,0 +1,27 @@
+class Thor
+  # Thor::Error is raised when it's caused by wrong usage of thor classes. Those
+  # errors have their backtrace supressed and are nicely shown to the user.
+  #
+  # Errors that are caused by the developer, like declaring a method which
+  # overwrites a thor keyword, it SHOULD NOT raise a Thor::Error. This way, we
+  # ensure that developer errors are shown with full backtrace.
+  #
+  class Error < StandardError
+  end
+
+  # Raised when a task was not found.
+  #
+  class UndefinedTaskError < Error
+  end
+
+  # Raised when a task was found, but not invoked properly.
+  #
+  class InvocationError < Error
+  end
+
+  class RequiredArgumentMissingError < InvocationError
+  end
+
+  class MalformattedArgumentError < InvocationError
+  end
+end