A new kind of plug-in: configurers. #563

1 files changed, 10 insertions, 0 deletions

diff --git a/coverage/plugin_support.py b/coverage/plugin_support.py
index 66cc710a..c737a42c 100644
--- a/coverage/plugin_support.py
+++ b/coverage/plugin_support.py
@@ -20,6 +20,7 @@ class Plugins(object):
         self.order = []
         self.names = {}
         self.file_tracers = []
+        self.configurers = []
 
         self.current_module = None
         self.debug = None
@@ -60,6 +61,15 @@ class Plugins(object):
         """
         self._add_plugin(plugin, self.file_tracers)
 
+    def add_configurer(self, plugin):
+        """Add a configuring plugin.
+
+        `plugin` is an instance of a third-party plugin class. It must
+        implement the :meth:`CoveragePlugin.configure` method.
+
+        """
+        self._add_plugin(plugin, self.configurers)
+
     def add_noop(self, plugin):
         """Add a plugin that does nothing.