Add matcher with optional pure only

.gitignore

@@ -0,0 +1,4 @@
+__pycache__
+*.egg-info
+*.pyc
+*.d/

CHANGELOG

@@ -1,4 +1,5 @@
 - 0.0.2
 	* Fix rename module name errors
+	* Add listing and matcher
 - 0.0.1
 	* Add bases states and aliases

run_tests.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -a
+set -e
+set -x
+default_pythonpath=$PYTHONPATH:.
+export PYTHONPATH=${default_pythonpath:-.}
+>&2 echo using pythonpath $PYTHONPATH
+for f in `ls tests/*.py`; do
+	python $f
+done
+set +x
+set +e
+set +a

shep/state.py

@@ -1,6 +1,5 @@
 # standard imports
 import enum
-import logging
 
 # local imports
 from shep.error import (
@@ -8,19 +7,16 @@ from shep.error import (
         StateInvalid,
         )
 
-logg = logging.getLogger(__name__)
-
 
 class State:
 
-    def __init__(self, bits):
+    def __init__(self, bits, logger=None, store=None):
         self.__bits = bits
         self.__limit = (1 << bits) - 1
         self.__c = 0
         self.__reverse = {}
-
-    def __store(self):
-        pass
+        self.__logger = logger
+        self.__store = store
 
 
     def __is_pure(self, v):
@@ -47,7 +43,7 @@ class State:
     def __check_valid(self, v):
         v = int(v)
         if self.__reverse.get(v):
-            raise StateValueExists(v)
+            raise StateExists(v)
         return v
 
 
@@ -98,17 +94,20 @@ class State:
         return l
 
 
-    def have(self, v):
+    def match(self, v, pure=False):
         r = []
-        m = self.__reverse.get(k)
+        if not pure:
+            m = self.__reverse.get(v)
             if m != None:
                 r.append(m)
         c = 1
         for i in range(self.__bits):
             if v & c > 0:
-                self.__check_value_cursor(c)
+                try:
                     k = self.__reverse[c]
                     r.append(k)
+                except KeyError:
+                    pass
             c <<= 1
 
         return r

tests/test_report.py

@@ -29,5 +29,26 @@ class TestStateReport(unittest.TestCase):
             getattr(self.states, k)
 
 
+    def test_match(self):
+        r = self.states.match(self.states.FOO)
+        self.assertEqual(getattr(self.states, r[0]), 1)
+
+
+    def test_match_alias(self):
+        self.states.alias('xyzzy', self.states.FOO | self.states.BAZ)
+        r = self.states.match(self.states.XYZZY)
+        for k in ['FOO', 'BAZ', 'XYZZY']:
+            self.assertIn(k, r)
+        self.assertNotIn('BAR', r)
+
+
+    def test_match_alias_pure(self):
+        self.states.alias('xyzzy', self.states.FOO | self.states.BAZ)
+        r = self.states.match(self.states.XYZZY, pure=True)
+        for k in ['FOO', 'BAZ']:
+            self.assertIn(k, r)
+        self.assertNotIn('XYZZY', r)
+
+
 if __name__ == '__main__':
     unittest.main()