prelim module support

kmk/modules/__init__.py

@@ -0,0 +1,40 @@
+class InvalidExtensionEnvironment(Exception):
+    pass
+
+
+class Module:
+    '''
+    Modules differ from extensions in that they not only can read the state, but
+    are allowed to modify the state. The will be loaded on boot, and are not
+    allowed to be unloaded as they are required to continue functioning in a
+    consistant manner.
+    '''
+
+    # The below methods should be implemented by subclasses
+
+    def during_bootup(self, keyboard):
+        raise NotImplementedError
+
+    def before_matrix_scan(self, keyboard):
+        '''
+        Return value will be injected as an extra matrix update
+        '''
+        raise NotImplementedError
+
+    def after_matrix_scan(self, keyboard):
+        '''
+        Return value will be replace matrix update if supplied
+        '''
+        raise NotImplementedError
+
+    def before_hid_send(self, keyboard):
+        raise NotImplementedError
+
+    def after_hid_send(self, keyboard):
+        raise NotImplementedError
+
+    def on_powersave_enable(self, keyboard):
+        raise NotImplementedError
+
+    def on_powersave_disable(self, keyboard):
+        raise NotImplementedError