Enable alias with comma-separated values

CHANGELOG

@@ -1,3 +1,5 @@
+- 0.0.19:
+	* Enable alias with comma separated values
 - 0.0.18
 	* Eliminate key error when list run on empty valid state
 	* Add replace content method

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = shep
-version = 0.0.18
+version = 0.0.19
 description = Multi-state key stores using bit masks
 author = Louis Holbrook
 author_email = dev@holbrook.no

shep/state.py

@@ -50,7 +50,7 @@ class State:
 
 
     def __check_valid(self, v):
-        v = int(v)
+        v = self.__check_value_typ(v)
         if self.__reverse.get(v):
             raise StateExists(v)
         return v
@@ -59,6 +59,7 @@ class State:
     def __check_limit(self, v):
         if v > self.__limit:
             raise OverflowError(v)
+        return v
 
 
     def __check_value(self, v):
@@ -67,8 +68,12 @@ class State:
         return v
 
 
+    def __check_value_typ(self, v):
+        return int(v)
+
+
     def __check_value_cursor(self, v):
-        v = self.__check_valid(v)
+        v = self.__check_value_typ(v)
         if v > 1 << self.__c:
             raise StateInvalid(v)
         return v
@@ -112,9 +117,12 @@ class State:
         self.__set(k, v)
         
 
-    def alias(self, k, v):
+    def alias(self, k, *args):
         k = self.__check_name(k)
-        v = self.__check_value_cursor(v)
+        v = 0
+        for a in args:
+            a = self.__check_value_cursor(a)
+            v = self.__check_limit(v | a)
         if self.__is_pure(v):
             raise ValueError('use add to add pure values')
         self.__set(k, v)

tests/test_state.py

@@ -66,6 +66,14 @@ class TestState(unittest.TestCase):
         states = State(3)
         with self.assertRaises(ValueError):
             states.alias('foo', 1)
+        states.add('foo')
+        states.add('bar')
+        states.alias('baz', states.FOO, states.BAR)
+        self.assertEqual(states.BAZ, 3)
+
+
+    def test_alias_multi(self):
+        states = State(3)
 
 
     def test_alias_cover(self):