Update docs for declarative catalogs

dependency_injector/catalogs.py

@@ -330,7 +330,7 @@ class DeclarativeCatalogMetaClass(type):
 
 @six.add_metaclass(DeclarativeCatalogMetaClass)
 class DeclarativeCatalog(object):
-    """Declarative catalog catalog of providers.
+    """Declarative catalog of providers.
 
     ``DeclarativeCatalog`` is a catalog of providers that could be defined in
     declarative manner. It should cover most of the cases when list of
@@ -347,25 +347,27 @@ class DeclarativeCatalog(object):
     name = str()
     """Catalog's name.
 
+    By default it is catalog's module + class names.
+
     :type: str
     """
 
     cls_providers = dict()
     """Read-only dictionary of current catalog providers.
 
-    :type: dict[str, dependency_injector.Provider]
+    :type: dict[str, :py:class:`dependency_injector.providers.Provider`]
     """
 
     inherited_providers = dict()
     """Read-only dictionary of inherited providers.
 
-    :type: dict[str, dependency_injector.Provider]
+    :type: dict[str, :py:class:`dependency_injector.providers.Provider`]
     """
 
     providers = dict()
     """Read-only dictionary of all providers.
 
-    :type: dict[str, dependency_injector.Provider]
+    :type: dict[str, :py:class:`dependency_injector.providers.Provider`]
     """
 
     overridden_by = tuple()
@@ -384,8 +386,8 @@ class DeclarativeCatalog(object):
     last_overriding = None
     """Read-only reference to the last overriding catalog, if any.
 
-    :type: dependency_injector.DeclarativeCatalog |
-           dependency_injector.DynamicCatalog
+    :type: :py:class:`dependency_injector.catalogs.DeclarativeCatalog` |
+           :py:class:`dependency_injector.catalogs.DynamicCatalog` | None
     """
 
     _catalog = DynamicCatalog
@@ -396,8 +398,8 @@ class DeclarativeCatalog(object):
     def is_bundle_owner(cls, bundle):
         """Check if catalog is bundle owner.
 
-        :param bundle: Catalog's bundle
-        :type bundle: dependency_injector.CatalogBundle
+        :param bundle: Catalog's bundle instance
+        :type bundle: :py:class:`dependency_injector.catalogs.CatalogBundle`
 
         :rtype: bool
         """
@@ -408,9 +410,9 @@ class DeclarativeCatalog(object):
         """Return provider's name in catalog.
 
         :param provider: Provider instance
-        :type provider: dependency_injector.Provider
+        :type provider: :py:class:`dependency_injector.providers.Provider`
 
-        :raise: dependency_injector.UndefinedProviderError
+        :raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
 
         :return: Provider's name
         :rtype: str
@@ -422,7 +424,7 @@ class DeclarativeCatalog(object):
         """Check if provider is bound to the catalog.
 
         :param provider: Provider instance
-        :type provider: dependency_injector.Provider
+        :type provider: :py:class:`dependency_injector.providers.Provider`
 
         :rtype: bool
         """
@@ -433,7 +435,7 @@ class DeclarativeCatalog(object):
         """Return dict of providers, that are instance of provided type.
 
         :param provider_type: Provider type
-        :type provider_type: dependency_injector.Provider
+        :type provider: :py:class:`dependency_injector.providers.Provider`
         """
         return cls._catalog.filter(provider_type)
 
@@ -442,8 +444,9 @@ class DeclarativeCatalog(object):
         """Override current catalog providers by overriding catalog providers.
 
         :param overriding: Overriding catalog
-        :type overriding: dependency_injector.DeclarativeCatalog |
-                          dependency_injector.DynamicCatalog
+        :type overriding:
+            :py:class:`dependency_injector.catalogs.DeclarativeCatalog` |
+            :py:class:`dependency_injector.catalogs.DynamicCatalog`
 
         :rtype: None
         """
@@ -472,13 +475,15 @@ class DeclarativeCatalog(object):
         :param name: Provider's name
         :type name: str
 
-        :raise: dependency_injector.UndefinedProviderError
+        :raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
 
         :return: Provider with specified name
-        :rtype: dependency_injector.providers.Provider
+        :rtype: :py:class:`dependency_injector.providers.Provider`
         """
         return cls._catalog.get_provider(name)
 
+    get = get_provider  # Backward compatibility for versions < 0.11.*
+
     @classmethod
     def bind_provider(cls, name, provider):
         """Bind provider to catalog with specified name.
@@ -487,9 +492,9 @@ class DeclarativeCatalog(object):
         :type name: str
 
         :param provider: Provider instance
-        :type provider: dependency_injector.Provider
+        :type provider: :py:class:`dependency_injector.providers.Provider`
 
-        :raise: dependency_injector.Error
+        :raise: :py:class:`dependency_injector.errors.Error`
 
         :rtype: None
         """
@@ -501,9 +506,10 @@ class DeclarativeCatalog(object):
 
         :param providers: Dictionary of providers, where key is a name
             and value is a provider
-        :type providers: dict[str, dependency_injector.Provider]
+        :type providers:
+            dict[str, :py:class:`dependency_injector.providers.Provider`]
 
-        :raise: dependency_injector.Error
+        :raise: :py:class:`dependency_injector.errors.Error`
 
         :rtype: None
         """
@@ -521,6 +527,8 @@ class DeclarativeCatalog(object):
         """
         return hasattr(cls, name)
 
+    has = has_provider  # Backward compatibility for versions < 0.11.*
+
     @classmethod
     def unbind_provider(cls, name):
         """Remove provider binding.
@@ -532,8 +540,48 @@ class DeclarativeCatalog(object):
         """
         delattr(cls, name)
 
-    get = get_provider  # Backward compatibility for versions < 0.11.*
-    has = has_provider  # Backward compatibility for versions < 0.11.*
+    @classmethod
+    def __getattr__(cls, name):
+        """Return provider with specified name or raise en error.
+
+        :param name: Attribute's name
+        :type name: str
+
+        :raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
+        """
+        raise NotImplementedError('Implementated in metaclass')
+
+    @classmethod
+    def __setattr__(cls, name, value):
+        """Handle setting of catalog attributes.
+
+        Setting of attributes works as usual, but if value of attribute is
+        provider, this provider will be bound to catalog.
+
+        :param name: Attribute's name
+        :type name: str
+
+        :param value: Attribute's value
+        :type value: :py:class:`dependency_injector.providers.Provider` |
+                     object
+
+        :rtype: None
+        """
+        raise NotImplementedError('Implementated in metaclass')
+
+    @classmethod
+    def __delattr__(cls, name):
+        """Handle deleting of catalog attibute.
+
+        Deleting of attributes works as usual, but if value of attribute is
+        provider, this provider will be unbound from catalog.
+
+        :param name: Attribute's name
+        :type name: str
+
+        :rtype: None
+        """
+        raise NotImplementedError('Implementated in metaclass')
 
 
 # Backward compatibility for versions < 0.11.*

dependency_injector/injections.py

@@ -39,7 +39,7 @@ class Injection(object):
         return self.injectable
 
 
-class NamedInjection(Injection):
+class _NamedInjection(Injection):
     """Base class of named injections."""
 
     __slots__ = ('name',)
@@ -47,7 +47,7 @@ class NamedInjection(Injection):
     def __init__(self, name, injectable):
         """Initializer."""
         self.name = name
-        super(NamedInjection, self).__init__(injectable)
+        super(_NamedInjection, self).__init__(injectable)
 
 
 class Arg(Injection):
@@ -56,19 +56,19 @@ class Arg(Injection):
     __IS_ARG_INJECTION__ = True
 
 
-class KwArg(NamedInjection):
+class KwArg(_NamedInjection):
     """Keyword argument injection."""
 
     __IS_KWARG_INJECTION__ = True
 
 
-class Attribute(NamedInjection):
+class Attribute(_NamedInjection):
     """Attribute injection."""
 
     __IS_ATTRIBUTE_INJECTION__ = True
 
 
-class Method(NamedInjection):
+class Method(_NamedInjection):
     """Method injection."""
 
     __IS_METHOD_INJECTION__ = True

docs/api/catalogs.rst

@@ -3,5 +3,5 @@
 
 .. automodule:: dependency_injector.catalogs
    :members:
-    :special-members:
    :member-order: bysource
+   :special-members:

docs/api/index.rst

@@ -1,12 +1,11 @@
-API
-===
-
+API Documentation
+=================
 
 ..  toctree::
     :maxdepth: 2
 
-    top_level
     providers
+    injections
     catalogs
-    errors
     utils
+    errors

docs/api/injections.rst

@@ -0,0 +1,7 @@
+``dependency_injector.injections``
+----------------------------------
+
+.. automodule:: dependency_injector.injections
+   :members:
+   :member-order: bysource
+   :inherited-members:

docs/api/providers.rst

@@ -3,6 +3,4 @@
 
 .. automodule:: dependency_injector.providers
    :members:
-   :special-members:
-   :private-members:
    :member-order: bysource

docs/api/top_level.rst

@@ -2,5 +2,3 @@
 -----------------------
 
 .. automodule:: dependency_injector
-   :members:
-   :special-members:

docs/api/utils.rst

@@ -3,3 +3,4 @@
 
 .. automodule:: dependency_injector.utils
    :members:
+   :member-order: bysource

docs/catalogs/declarative.rst

@@ -1,17 +1,27 @@
 Declarative catalogs
 --------------------
 
-:py:class:`dependency_injector.catalogs.DeclarativeCatalog` is a catalog of 
-providers that could be defined in declarative manner. It should cover most 
-of the cases when list of providers that would be included in catalog is 
-deterministic (catalog will not change its structure in runtime).
+.. module:: dependency_injector.catalogs
+
+:py:class:`DeclarativeCatalog` is a catalog of providers that could be 
+defined in declarative manner. It should cover most of the cases when 
+list of providers that would be included in catalog is deterministic 
+(catalog will not change its structure in runtime).
 
 Declarative catalogs have to extend base declarative catalog class - 
 :py:class:`dependency_injector.catalogs.DeclarativeCatalog`.
 
-Providers have to be defined like catalog's class attributes. Every provider in
-catalog has name. This name should follow ``some_provider`` convention, 
-that is standard naming convention for attribute names in Python.
+Declarative catalog's providers have to be defined like catalog's class 
+attributes. Every provider in catalog has name. This name should follow 
+``some_provider`` convention, that is standard naming convention for 
+attribute names in Python.
+
+.. note::
+
+    Declarative catalogs have several features that could be useful 
+    for some kind of operations on catalog's providers, please visit API 
+    documentation for getting full list of features - 
+    :py:class:`dependency_injector.catalogs.DeclarativeCatalog`.
 
 .. note::
 
@@ -31,16 +41,20 @@ Here is an simple example of declarative catalog with several factories:
 .. literalinclude:: ../../examples/catalogs/declarative.py
    :language: python
 
-:py:class:`dependency_injector.catalogs.DeclarativeCatalog` has several 
-features that could be useful for some kind of operations on catalog's 
-providers (please visit API docs for getting full list of feautes - 
-:py:class:`dependency_injector.catalogs.DeclarativeCatalog`):
+Example of declarative catalogs inheritance:
 
-Example:
-
-.. image:: /images/catalogs/declarative_api.png
+.. image:: /images/catalogs/declarative_inheritance.png
     :width: 100%
     :align: center
 
-.. literalinclude:: ../../examples/catalogs/declarative_api.py
+.. literalinclude:: ../../examples/catalogs/declarative_inheritance.py
+   :language: python
+
+Example of declarative catalog's provider injections:
+
+.. image:: /images/catalogs/declarative_injections.png
+    :width: 100%
+    :align: center
+
+.. literalinclude:: ../../examples/catalogs/declarative_injections.py
    :language: python

docs/catalogs/dynamic.rst

@@ -1,2 +1,4 @@
 Dynamic catalogs
 ----------------
+
+.. module:: dependency_injector.catalogs

examples/catalogs/declarative.py

@@ -1,4 +1,4 @@
-"""Declarative catalog example."""
+"""Declarative catalog simple example."""
 
 from dependency_injector import catalogs
 from dependency_injector import providers

examples/catalogs/declarative_inheritance.py

@@ -1,4 +1,4 @@
-"""Declarative catalog API example."""
+"""Declarative catalogs inheritance example."""
 
 from dependency_injector import catalogs
 from dependency_injector import providers

examples/catalogs/declarative_injections.py

@@ -0,0 +1,50 @@
+"""Declarative catalog's provider injections example."""
+
+import sqlite3
+
+from dependency_injector import catalogs
+from dependency_injector import providers
+
+
+class UsersService(object):
+    """Users service, that has dependency on database."""
+
+    def __init__(self, db):
+        """Initializer."""
+        self.db = db
+
+
+class AuthService(object):
+    """Auth service, that has dependencies on users service and database."""
+
+    def __init__(self, db, users_service):
+        """Initializer."""
+        self.db = db
+        self.users_service = users_service
+
+
+class Services(catalogs.DeclarativeCatalog):
+    """Catalog of service providers."""
+
+    database = providers.Singleton(sqlite3.connect, ':memory:')
+    """:type: providers.Provider -> sqlite3.Connection"""
+
+    users = providers.Factory(UsersService,
+                              db=database)
+    """:type: providers.Provider -> UsersService"""
+
+    auth = providers.Factory(AuthService,
+                             db=database,
+                             users_service=users)
+    """:type: providers.Provider -> AuthService"""
+
+
+# Retrieving catalog providers:
+users_service = Services.users()
+auth_service = Services.auth()
+
+# Making some asserts:
+assert users_service.db is auth_service.db is Services.database()
+assert isinstance(auth_service.users_service, UsersService)
+assert users_service is not Services.users()
+assert auth_service is not Services.auth()