From 5121b5c070fdfc6b222fdd6d70f40ac83dd2373e Mon Sep 17 00:00:00 2001
From: Roman Mogylatov <rmogilatov@gmail.com>
Date: Mon, 22 Feb 2021 17:03:45 -0500
Subject: [PATCH] Add multiple containers prototype

---
 src/dependency_injector/containers.c   | 2138 ++++++++++++------------
 src/dependency_injector/containers.pyx |    2 +-
 src/dependency_injector/schema.py      |   54 +-
 3 files changed, 1110 insertions(+), 1084 deletions(-)

diff --git a/src/dependency_injector/containers.c b/src/dependency_injector/containers.c
index 2507e5d7..28367b8f 100644
--- a/src/dependency_injector/containers.c
+++ b/src/dependency_injector/containers.c
@@ -1535,7 +1535,7 @@ struct __pyx_obj_19dependency_injector_9providers_SingletonFullResetContext {
 };
 
 
-/* "dependency_injector/containers.pyx":158
+/* "dependency_injector/containers.pyx":157
  *         }
  * 
  *     def traverse(self, types=None):             # <<<<<<<<<<<<<<
@@ -2687,6 +2687,12 @@ static PyObject* __Pyx_PyUnicode_Join(PyObject* value_tuple, Py_ssize_t value_co
 static CYTHON_INLINE PyObject* __Pyx_PyBytes_Join(PyObject* sep, PyObject* values);
 #endif
 
+/* Import.proto */
+static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level);
+
+/* ImportFrom.proto */
+static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name);
+
 /* UnpackUnboundCMethod.proto */
 typedef struct {
     PyObject *type;
@@ -2893,18 +2899,12 @@ static PyTypeObject *__Pyx_ImportType(PyObject* module, const char *module_name,
 /* GetVTable.proto */
 static void* __Pyx_GetVtable(PyObject *dict);
 
-/* Import.proto */
-static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level);
-
 /* PatchInspect.proto */
 static PyObject* __Pyx_patch_inspect(PyObject* module);
 
 /* PatchAsyncIO.proto */
 static PyObject* __Pyx_patch_asyncio(PyObject* module);
 
-/* ImportFrom.proto */
-static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name);
-
 /* CalculateMetaclass.proto */
 static PyObject *__Pyx_CalculateMetaclass(PyTypeObject *metaclass, PyObject *bases);
 
@@ -3766,7 +3766,7 @@ static PyObject *__pyx_codeobj__113;
 static PyObject *__pyx_codeobj__115;
 /* Late includes */
 
-/* "dependency_injector/containers.pyx":20
+/* "dependency_injector/containers.pyx":19
  *     from .wiring import wire, unwire
  * else:
  *     def wire(*args, **kwargs):             # <<<<<<<<<<<<<<
@@ -3804,20 +3804,20 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_wire(CYTHON_UNUSED
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("wire", 0);
 
-  /* "dependency_injector/containers.pyx":21
+  /* "dependency_injector/containers.pyx":20
  * else:
  *     def wire(*args, **kwargs):
  *         raise NotImplementedError('Wiring requires Python 3.6 or above')             # <<<<<<<<<<<<<<
  * 
  *     def unwire(*args, **kwargs):
  */
-  __pyx_t_1 = __Pyx_PyObject_Call(__pyx_builtin_NotImplementedError, __pyx_tuple_, NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 21, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyObject_Call(__pyx_builtin_NotImplementedError, __pyx_tuple_, NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 20, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_Raise(__pyx_t_1, 0, 0, 0);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __PYX_ERR(0, 21, __pyx_L1_error)
+  __PYX_ERR(0, 20, __pyx_L1_error)
 
-  /* "dependency_injector/containers.pyx":20
+  /* "dependency_injector/containers.pyx":19
  *     from .wiring import wire, unwire
  * else:
  *     def wire(*args, **kwargs):             # <<<<<<<<<<<<<<
@@ -3835,7 +3835,7 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_wire(CYTHON_UNUSED
   return __pyx_r;
 }
 
-/* "dependency_injector/containers.pyx":23
+/* "dependency_injector/containers.pyx":22
  *         raise NotImplementedError('Wiring requires Python 3.6 or above')
  * 
  *     def unwire(*args, **kwargs):             # <<<<<<<<<<<<<<
@@ -3873,20 +3873,20 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_2unwire(CYTHON_UNUS
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("unwire", 0);
 
-  /* "dependency_injector/containers.pyx":24
+  /* "dependency_injector/containers.pyx":23
  * 
  *     def unwire(*args, **kwargs):
  *         raise NotImplementedError('Wiring requires Python 3.6 or above')             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  __pyx_t_1 = __Pyx_PyObject_Call(__pyx_builtin_NotImplementedError, __pyx_tuple_, NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 24, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyObject_Call(__pyx_builtin_NotImplementedError, __pyx_tuple_, NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 23, __pyx_L1_error)
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   __Pyx_Raise(__pyx_t_1, 0, 0, 0);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __PYX_ERR(0, 24, __pyx_L1_error)
+  __PYX_ERR(0, 23, __pyx_L1_error)
 
-  /* "dependency_injector/containers.pyx":23
+  /* "dependency_injector/containers.pyx":22
  *         raise NotImplementedError('Wiring requires Python 3.6 or above')
  * 
  *     def unwire(*args, **kwargs):             # <<<<<<<<<<<<<<
@@ -3904,7 +3904,7 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_2unwire(CYTHON_UNUS
   return __pyx_r;
 }
 
-/* "dependency_injector/containers.pyx":62
+/* "dependency_injector/containers.pyx":61
  *     __IS_CONTAINER__ = True
  * 
  *     def __init__(self):             # <<<<<<<<<<<<<<
@@ -3938,97 +3938,97 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_16DynamicContainer_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__init__", 0);
 
-  /* "dependency_injector/containers.pyx":67
+  /* "dependency_injector/containers.pyx":66
  *         :rtype: None
  *         """
  *         self.provider_type = providers.Provider             # <<<<<<<<<<<<<<
  *         self.providers = {}
  *         self.overridden = tuple()
  */
-  __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_providers); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 67, __pyx_L1_error)
+  __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_providers); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 66, __pyx_L1_error)
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-  /* "dependency_injector/containers.pyx":68
+  /* "dependency_injector/containers.pyx":67
  *         """
  *         self.provider_type = providers.Provider
  *         self.providers = {}             # <<<<<<<<<<<<<<
  *         self.overridden = tuple()
  *         self.parent = None
  */
-  __pyx_t_2 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 68, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 67, __pyx_L1_error)
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+  if (__Pyx_PyObject_SetAttrStr(__pyx_v_self, __pyx_n_s_providers, __pyx_t_2) < 0) __PYX_ERR(0, 67, __pyx_L1_error)
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-  /* "dependency_injector/containers.pyx":69
+  /* "dependency_injector/containers.pyx":68
  *         self.provider_type = providers.Provider
  *         self.providers = {}
  *         self.overridden = tuple()             # <<<<<<<<<<<<<<
  *         self.parent = None
  *         self.declarative_parent = None
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-  __pyx_t_2 = __Pyx_PyObject_CallNoArg(((PyObject *)(&PyTuple_Type))); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 69, __pyx_L1_error)
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-  if (__Pyx_PyObject_SetAttrStr(__pyx_v_self, __pyx_n_s_overridden, __pyx_t_2) < 0) __PYX_ERR(0, 69, __pyx_L1_error)
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-  /* "dependency_injector/containers.pyx":70
+  /* "dependency_injector/containers.pyx":69
  *         self.providers = {}
  *         self.overridden = tuple()
  *         self.parent = None             # <<<<<<<<<<<<<<
  *         self.declarative_parent = None
  *         self.wired_to_modules = []
  */
-  if (__Pyx_PyObject_SetAttrStr(__pyx_v_self, __pyx_n_s_parent, Py_None) < 0) __PYX_ERR(0, 70, __pyx_L1_error)
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-  /* "dependency_injector/containers.pyx":71
+  /* "dependency_injector/containers.pyx":70
  *         self.overridden = tuple()
  *         self.parent = None
  *         self.declarative_parent = None             # <<<<<<<<<<<<<<
  *         self.wired_to_modules = []
  *         self.wired_to_packages = []
  */
-  if (__Pyx_PyObject_SetAttrStr(__pyx_v_self, __pyx_n_s_declarative_parent, Py_None) < 0) __PYX_ERR(0, 71, __pyx_L1_error)
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-  /* "dependency_injector/containers.pyx":72
+  /* "dependency_injector/containers.pyx":71
  *         self.parent = None
  *         self.declarative_parent = None
  *         self.wired_to_modules = []             # <<<<<<<<<<<<<<
  *         self.wired_to_packages = []
  *         self.__self__ = providers.Self(self)
  */
-  __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 72, __pyx_L1_error)
+  __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 71, __pyx_L1_error)
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-  if (__Pyx_PyObject_SetAttrStr(__pyx_v_self, __pyx_n_s_wired_to_modules, __pyx_t_2) < 0) __PYX_ERR(0, 72, __pyx_L1_error)
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-  /* "dependency_injector/containers.pyx":73
+  /* "dependency_injector/containers.pyx":72
  *         self.declarative_parent = None
  *         self.wired_to_modules = []
  *         self.wired_to_packages = []             # <<<<<<<<<<<<<<
  *         self.__self__ = providers.Self(self)
  *         super(DynamicContainer, self).__init__()
  */
-  __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 73, __pyx_L1_error)
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-  /* "dependency_injector/containers.pyx":74
+  /* "dependency_injector/containers.pyx":73
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  *         self.wired_to_packages = []
  *         self.__self__ = providers.Self(self)             # <<<<<<<<<<<<<<
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-  __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_providers); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 74, __pyx_L1_error)
+  __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_providers); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 73, __pyx_L1_error)
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-  __pyx_t_3 = __Pyx_PyObject_GetAttrStr(__pyx_t_1, __pyx_n_s_Self); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 74, __pyx_L1_error)
+  __pyx_t_3 = __Pyx_PyObject_GetAttrStr(__pyx_t_1, __pyx_n_s_Self); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 73, __pyx_L1_error)
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@@ -4043,22 +4043,22 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_16DynamicContainer_
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+  /* "dependency_injector/containers.pyx":74
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  *         self.__self__ = providers.Self(self)
  *         super(DynamicContainer, self).__init__()             # <<<<<<<<<<<<<<
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-  __pyx_t_1 = PyTuple_New(2); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 75, __pyx_L1_error)
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@@ -4066,10 +4066,10 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_16DynamicContainer_
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@@ -4084,12 +4084,12 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_16DynamicContainer_
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-  /* "dependency_injector/containers.pyx":62
+  /* "dependency_injector/containers.pyx":61
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@@ -4112,7 +4112,7 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_16DynamicContainer_
   return __pyx_r;
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-/* "dependency_injector/containers.pyx":77
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@@ -4156,11 +4156,11 @@ static PyObject *__pyx_pw_19dependency_injector_10containers_16DynamicContainer_
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@@ -4173,7 +4173,7 @@ static PyObject *__pyx_pw_19dependency_injector_10containers_16DynamicContainer_
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-  __Pyx_RaiseArgtupleInvalid("__deepcopy__", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 77, __pyx_L3_error)
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-  /* "dependency_injector/containers.pyx":79
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-  /* "dependency_injector/containers.pyx":127
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-  /* "dependency_injector/containers.pyx":143
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-  /* "dependency_injector/containers.pyx":158
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-  /* "dependency_injector/containers.pyx":162
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-  /* "dependency_injector/containers.pyx":210
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-  /* "dependency_injector/containers.pyx":223
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-  /* "dependency_injector/containers.pyx":236
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+    global_dict = PyModule_GetDict(__pyx_m);
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+        goto bad;
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 static int __Pyx_TryUnpackUnboundCMethod(__Pyx_CachedCFunction* target) {
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-                if (!module) {
-                    if (!PyErr_ExceptionMatches(PyExc_ImportError))
-                        goto bad;
-                    PyErr_Clear();
-                }
-            }
-            level = 0;
-        }
-        #endif
-        if (!module) {
-            #if PY_MAJOR_VERSION < 3
-            PyObject *py_level = PyInt_FromLong(level);
-            if (!py_level)
-                goto bad;
-            module = PyObject_CallFunctionObjArgs(py_import,
-                name, global_dict, empty_dict, list, py_level, (PyObject *)NULL);
-            Py_DECREF(py_level);
-            #else
-            module = PyImport_ImportModuleLevelObject(
-                name, global_dict, empty_dict, list, level);
-            #endif
-        }
-    }
-bad:
-    #if PY_MAJOR_VERSION < 3
-    Py_XDECREF(py_import);
-    #endif
-    Py_XDECREF(empty_list);
-    Py_XDECREF(empty_dict);
-    return module;
-}
-
 /* PatchInspect */
 static PyObject* __Pyx_patch_inspect(PyObject* module) {
 #if defined(__Pyx_Generator_USED) && (!defined(CYTHON_PATCH_INSPECT) || CYTHON_PATCH_INSPECT)
@@ -29720,20 +29736,6 @@ ignore:
     return module;
 }
 
-/* ImportFrom */
-static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name) {
-    PyObject* value = __Pyx_PyObject_GetAttrStr(module, name);
-    if (unlikely(!value) && PyErr_ExceptionMatches(PyExc_AttributeError)) {
-        PyErr_Format(PyExc_ImportError,
-        #if PY_MAJOR_VERSION < 3
-            "cannot import name %.230s", PyString_AS_STRING(name));
-        #else
-            "cannot import name %S", name);
-        #endif
-    }
-    return value;
-}
-
 /* CalculateMetaclass */
 static PyObject *__Pyx_CalculateMetaclass(PyTypeObject *metaclass, PyObject *bases) {
     Py_ssize_t i, nbases = PyTuple_GET_SIZE(bases);
diff --git a/src/dependency_injector/containers.pyx b/src/dependency_injector/containers.pyx
index 69e05f53..b2348dd3 100644
--- a/src/dependency_injector/containers.pyx
+++ b/src/dependency_injector/containers.pyx
@@ -11,7 +11,6 @@ import six
 
 from . import providers, errors
 from .providers cimport __is_future_or_coroutine
-from .schema import build_schema
 
 
 if sys.version_info[:2] >= (3, 6):
@@ -333,6 +332,7 @@ class DynamicContainer(Container):
 
     def from_schema(self, schema):
         """Build container providers from schema."""
+        from .schema import build_schema
         for name, provider in build_schema(schema).items():
             self.set_provider(name, provider)
 
diff --git a/src/dependency_injector/schema.py b/src/dependency_injector/schema.py
index e1ce3df0..55205d03 100644
--- a/src/dependency_injector/schema.py
+++ b/src/dependency_injector/schema.py
@@ -3,7 +3,7 @@
 import importlib
 from typing import Dict, Any, Type, Optional
 
-from . import providers
+from . import containers, providers
 
 
 Schema = Dict[Any, Any]
@@ -11,9 +11,17 @@ Schema = Dict[Any, Any]
 
 def build_schema(schema: Schema) -> Dict[str, providers.Provider]:
     """Build provider schema."""
-    built = {}
+    container = containers.DynamicContainer()
+    _create_providers(container, schema['providers'])
+    _setup_injections(container, schema['providers'])
+    return container.providers
 
-    for provider_name, data in schema['providers'].items():
+
+def _create_providers(
+        container: containers.Container,
+        providers_data: Dict[str, Any],
+):
+    for provider_name, data in providers_data.items():
         provider_type = _get_provider_cls(data['provider'])
         args = []
 
@@ -23,18 +31,35 @@ def build_schema(schema: Schema) -> Dict[str, providers.Provider]:
             if provides:
                 args.append(provides)
 
-        provider = provider_type(*args)
-        built[provider_name] = provider
+        if provider_type is providers.Container:
+            provides = containers.DynamicContainer
+            args.append(provides)
 
-    for provider_name, data in schema['providers'].items():
-        provider = built[provider_name]
+        provider = provider_type(*args)
+        container.set_provider(provider_name, provider)
+
+        if isinstance(provider, providers.Container):
+            _create_providers(provider, data['providers'])
+
+
+def _setup_injections(
+        container: containers.Container,
+        providers_data: Dict[str, Any],
+        *,
+        current_container: Optional[containers.Container] = None,
+):
+    if not current_container:
+        current_container = container
+
+    for provider_name, data in providers_data.items():
+        provider = getattr(current_container, provider_name)
         args = []
         kwargs = {}
 
         arg_injections = data.get('args')
         if arg_injections:
             for arg in arg_injections:
-                injection = _resolve_provider(arg, built)
+                injection = _resolve_provider(container, arg)
                 if not injection:
                     injection = arg
                 args.append(injection)
@@ -44,23 +69,22 @@ def build_schema(schema: Schema) -> Dict[str, providers.Provider]:
         kwarg_injections = data.get('kwargs')
         if kwarg_injections:
             for name, arg in kwarg_injections.items():
-                injection = _resolve_provider(arg, built)
+                injection = _resolve_provider(container, arg)
                 if not injection:
                     injection = arg
                 kwargs[name] = injection
         if kwargs:
             provider.add_kwargs(**kwargs)
 
-        # TODO: add attributes
-
-    return built
+        if isinstance(provider, providers.Container):
+            _setup_injections(container, data['providers'], current_container=provider)
 
 
-def _resolve_provider(name: str, built: Dict[Any, providers.Provider]) -> Optional[providers.Provider]:
+def _resolve_provider(container: containers.Container, name: str) -> Optional[providers.Provider]:
     segments = name.split('.')
     try:
-        provider = built[segments[0]]
-    except KeyError:
+        provider = getattr(container, segments[0])
+    except AttributeError:
         return None
 
     for segment in segments[1:]: