[addresses] moving component dependency graphs to a new module

scripts/geodata/addresses/components.py

@@ -15,6 +15,7 @@ from geodata.address_formatting.formatter import AddressFormatter
 from geodata.address_expansions.abbreviations import abbreviate
 from geodata.address_expansions.gazetteers import *
 from geodata.addresses.config import address_config
+from geodata.addresses.dependencies import ComponentDependencies
 from geodata.addresses.floors import Floor
 from geodata.addresses.entrances import Entrance
 from geodata.addresses.house_numbers import HouseNumber
@@ -47,44 +48,6 @@ PARSER_DEFAULT_CONFIG = os.path.join(this_dir, os.pardir, os.pardir, os.pardir,
                                      'resources', 'parser', 'default.yaml')
 
 
-class ComponentDependencies(object):
-    '''
-    Declare an address component and its dependencies e.g.
-    a house_numer cannot be used in the absence of a road name.
-    '''
-
-    component_bit_values = {}
-
-    def __init__(self, graph):
-        self.dependencies = {}
-
-        self.all_values = long('1' * len(graph), 2)
-
-        self.dependency_order = [c for c in topsort(graph)]
-
-        for component, deps in six.iteritems(graph):
-            self.dependencies[component] = self.component_bitset(deps) if deps else self.all_values
-
-    def __getitem__(self, key):
-        return self.dependencies.__getitem__(key)
-
-    def __contains__(self, key):
-        return self.dependencies.__contains__(key)
-
-    @classmethod
-    def get_component_bit_value(cls, name):
-        val = cls.component_bit_values.get(name)
-        if val is None:
-            num_values = len(cls.component_bit_values)
-            val = 1 << num_values
-            cls.component_bit_values[name] = val
-        return val
-
-    @classmethod
-    def component_bitset(cls, components):
-        return reduce(operator.or_, [cls.get_component_bit_value(name) for name in components])
-
-
 class AddressComponents(object):
     '''
     This class, while it has a few dependencies, exposes a simple method

scripts/geodata/addresses/dependencies.py

@@ -0,0 +1,42 @@
+import operator
+import six
+
+from geodata.graph.topsort import topsort
+
+
+class ComponentDependencies(object):
+    '''
+    Declare an address component and its dependencies e.g.
+    a house_numer cannot be used in the absence of a road name.
+    '''
+
+    component_bit_values = {}
+
+    def __init__(self, graph):
+        self.dependencies = {}
+
+        self.all_values = long('1' * len(graph), 2)
+
+        self.dependency_order = [c for c in topsort(graph)]
+
+        for component, deps in six.iteritems(graph):
+            self.dependencies[component] = self.component_bitset(deps) if deps else self.all_values
+
+    def __getitem__(self, key):
+        return self.dependencies.__getitem__(key)
+
+    def __contains__(self, key):
+        return self.dependencies.__contains__(key)
+
+    @classmethod
+    def get_component_bit_value(cls, name):
+        val = cls.component_bit_values.get(name)
+        if val is None:
+            num_values = len(cls.component_bit_values)
+            val = 1 << num_values
+            cls.component_bit_values[name] = val
+        return val
+
+    @classmethod
+    def component_bitset(cls, components):
+        return reduce(operator.or_, [cls.get_component_bit_value(name) for name in components])