internal: merge OrderedDeclaration.evaluate() variants.

2 files changed, 50 insertions, 40 deletions

diff --git a/factory/containers.py b/factory/containers.py
index 0859a10..dc3a457 100644
--- a/factory/containers.py
+++ b/factory/containers.py
@@ -172,30 +172,6 @@ class LazyValue(object):
         raise NotImplementedError("This is an abstract method.")
 
 
-class SubFactoryWrapper(LazyValue):
-    """Lazy wrapper around a SubFactory.
-
-    Attributes:
-        subfactory (declarations.SubFactory): the SubFactory being wrapped
-        subfields (DeclarationDict): Default values to override when evaluating
-            the SubFactory
-        create (bool): whether to 'create' or 'build' the SubFactory.
-    """
-
-    def __init__(self, subfactory, subfields, create, *args, **kwargs):
-        super(SubFactoryWrapper, self).__init__(*args, **kwargs)
-        self.subfactory = subfactory
-        self.subfields = subfields
-        self.create = create
-
-    def evaluate(self, obj, containers=()):
-        expanded_containers = (obj,)
-        if containers:
-            expanded_containers += tuple(containers)
-        return self.subfactory.evaluate(self.create, self.subfields,
-            expanded_containers)
-
-
 class OrderedDeclarationWrapper(LazyValue):
     """Lazy wrapper around an OrderedDeclaration.
 
@@ -206,10 +182,12 @@ class OrderedDeclarationWrapper(LazyValue):
             declaration
     """
 
-    def __init__(self, declaration, sequence, *args, **kwargs):
-        super(OrderedDeclarationWrapper, self).__init__(*args, **kwargs)
+    def __init__(self, declaration, sequence, create, extra=None, **kwargs):
+        super(OrderedDeclarationWrapper, self).__init__(**kwargs)
         self.declaration = declaration
         self.sequence = sequence
+        self.create = create
+        self.extra = extra
 
     def evaluate(self, obj, containers=()):
         """Lazily evaluate the attached OrderedDeclaration.
@@ -219,7 +197,14 @@ class OrderedDeclarationWrapper(LazyValue):
             containers (object list): the chain of containers of the object
                 being built, its immediate holder being first.
         """
-        return self.declaration.evaluate(self.sequence, obj, containers)
+        return self.declaration.evaluate(self.sequence, obj,
+                create=self.create,
+                extra=self.extra,
+                containers=containers,
+        )
+
+    def __repr__(self):
+        return '<%s for %r>' % (self.__class__.__name__, self.declaration)
 
 
 class AttributeBuilder(object):
@@ -240,7 +225,7 @@ class AttributeBuilder(object):
             extra = {}
 
         self.factory = factory
-        self._containers = extra.pop('__containers', None)
+        self._containers = extra.pop('__containers', ())
         self._attrs = factory.declarations(extra)
 
         attrs_with_subfields = [k for k, v in self._attrs.items() if self.has_subfields(v)]
@@ -263,10 +248,12 @@ class AttributeBuilder(object):
         # OrderedDeclaration.
         wrapped_attrs = {}
         for k, v in self._attrs.items():
-            if isinstance(v, declarations.SubFactory):
-                v = SubFactoryWrapper(v, self._subfields.get(k, {}), create)
-            elif isinstance(v, declarations.OrderedDeclaration):
-                v = OrderedDeclarationWrapper(v, self.factory.sequence)
+            if isinstance(v, declarations.OrderedDeclaration):
+                v = OrderedDeclarationWrapper(v,
+                        sequence=self.factory.sequence,
+                        create=create,
+                        extra=self._subfields.get(k, {}),
+                )
             wrapped_attrs[k] = v
 
         stub = LazyStub(wrapped_attrs, containers=self._containers,
diff --git a/factory/declarations.py b/factory/declarations.py
index 2122bd2..15d8d5b 100644
--- a/factory/declarations.py
+++ b/factory/declarations.py
@@ -37,7 +37,7 @@ class OrderedDeclaration(object):
     in the same factory.
     """
 
-    def evaluate(self, sequence, obj, containers=()):
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         """Evaluate this declaration.
 
         Args:
@@ -47,6 +47,10 @@ class OrderedDeclaration(object):
                 attributes
             containers (list of containers.LazyStub): The chain of SubFactory
                 which led to building this object.
+            create (bool): whether the target class should be 'built' or
+                'created'
+            extra (DeclarationDict or None): extracted key/value extracted from
+                the attribute prefix
         """
         raise NotImplementedError('This is an abstract method')
 
@@ -63,7 +67,7 @@ class LazyAttribute(OrderedDeclaration):
         super(LazyAttribute, self).__init__(*args, **kwargs)
         self.function = function
 
-    def evaluate(self, sequence, obj, containers=()):
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         return self.function(obj)
 
 
@@ -122,7 +126,7 @@ class SelfAttribute(OrderedDeclaration):
         self.attribute_name = attribute_name
         self.default = default
 
-    def evaluate(self, sequence, obj, containers=()):
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         if self.depth > 1:
             # Fetching from a parent
             target = containers[self.depth - 2]
@@ -130,6 +134,13 @@ class SelfAttribute(OrderedDeclaration):
             target = obj
         return deepgetattr(target, self.attribute_name, self.default)
 
+    def __repr__(self):
+        return '<%s(%r, default=%r)>' % (
+            self.__class__.__name__,
+            self.attribute_name,
+            self.default,
+        )
+
 
 class Iterator(OrderedDeclaration):
     """Fill this value using the values returned by an iterator.
@@ -150,7 +161,7 @@ class Iterator(OrderedDeclaration):
         else:
             self.iterator = iter(iterator)
 
-    def evaluate(self, sequence, obj, containers=()):
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         value = next(self.iterator)
         if self.getter is None:
             return value
@@ -173,7 +184,7 @@ class Sequence(OrderedDeclaration):
         self.function = function
         self.type = type
 
-    def evaluate(self, sequence, obj, containers=()):
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         return self.function(self.type(sequence))
 
 
@@ -186,7 +197,7 @@ class LazyAttributeSequence(Sequence):
         type (function): A function converting an integer into the expected kind
             of counter for the 'function' attribute.
     """
-    def evaluate(self, sequence, obj, containers=()):
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         return self.function(obj, self.type(sequence))
 
 
@@ -204,7 +215,7 @@ class ContainerAttribute(OrderedDeclaration):
         self.function = function
         self.strict = strict
 
-    def evaluate(self, sequence, obj, containers=()):
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         """Evaluate the current ContainerAttribute.
 
         Args:
@@ -237,11 +248,20 @@ class ParameteredAttribute(OrderedDeclaration):
 
     CONTAINERS_FIELD = '__containers'
 
+    # Whether to add the current object to the stack of containers
+    EXTEND_CONTAINERS = False
+
     def __init__(self, **kwargs):
         super(ParameteredAttribute, self).__init__()
         self.defaults = kwargs
 
-    def evaluate(self, create, extra, containers):
+    def _prepare_containers(self, obj, containers=()):
+        if self.EXTEND_CONTAINERS:
+            return (obj,) + tuple(containers)
+
+        return containers
+
+    def evaluate(self, sequence, obj, create, extra=None, containers=()):
         """Evaluate the current definition and fill its attributes.
 
         Uses attributes definition in the following order:
@@ -260,6 +280,7 @@ class ParameteredAttribute(OrderedDeclaration):
         if extra:
             defaults.update(extra)
         if self.CONTAINERS_FIELD:
+            containers = self._prepare_containers(obj, containers)
             defaults[self.CONTAINERS_FIELD] = containers
 
         return self.generate(create, defaults)
@@ -288,6 +309,8 @@ class SubFactory(ParameteredAttribute):
         factory (base.Factory): the wrapped factory
     """
 
+    EXTEND_CONTAINERS = True
+
     def __init__(self, factory, **kwargs):
         super(SubFactory, self).__init__(**kwargs)
         if isinstance(factory, type):