From dcc00c69c40691db8f827890afed7e00c38f2234 Mon Sep 17 00:00:00 2001
From: kodonnell <kodonnell@users.noreply.github.com>
Date: Thu, 16 Aug 2018 23:48:28 +1200
Subject: [PATCH 1/4] first crack a naive cython

---
 .gitignore                                                  | 2 ++
 astroid/{__init__.py => __init__.pyx}                       | 0
 astroid/{_ast.py => _ast.pyx}                               | 0
 astroid/{arguments.py => arguments.pyx}                     | 0
 astroid/{as_string.py => as_string.pyx}                     | 0
 astroid/{bases.py => bases.pyx}                             | 0
 astroid/brain/{brain_argparse.py => brain_argparse.pyx}     | 0
 astroid/brain/{brain_attrs.py => brain_attrs.pyx}           | 0
 ...ain_builtin_inference.py => brain_builtin_inference.pyx} | 0
 .../brain/{brain_collections.py => brain_collections.pyx}   | 0
 astroid/brain/{brain_curses.py => brain_curses.pyx}         | 0
 astroid/brain/{brain_dateutil.py => brain_dateutil.pyx}     | 0
 astroid/brain/{brain_fstrings.py => brain_fstrings.pyx}     | 0
 astroid/brain/{brain_functools.py => brain_functools.pyx}   | 0
 astroid/brain/{brain_gi.py => brain_gi.pyx}                 | 0
 astroid/brain/{brain_hashlib.py => brain_hashlib.pyx}       | 0
 astroid/brain/{brain_io.py => brain_io.pyx}                 | 0
 astroid/brain/{brain_mechanize.py => brain_mechanize.pyx}   | 0
 .../{brain_multiprocessing.py => brain_multiprocessing.pyx} | 0
 .../{brain_namedtuple_enum.py => brain_namedtuple_enum.pyx} | 0
 astroid/brain/{brain_nose.py => brain_nose.pyx}             | 0
 astroid/brain/{brain_numpy.py => brain_numpy.pyx}           | 0
 .../{brain_pkg_resources.py => brain_pkg_resources.pyx}     | 0
 astroid/brain/{brain_pytest.py => brain_pytest.pyx}         | 0
 astroid/brain/{brain_qt.py => brain_qt.pyx}                 | 0
 astroid/brain/{brain_random.py => brain_random.pyx}         | 0
 astroid/brain/{brain_re.py => brain_re.pyx}                 | 0
 astroid/brain/{brain_six.py => brain_six.pyx}               | 0
 astroid/brain/{brain_ssl.py => brain_ssl.pyx}               | 0
 astroid/brain/{brain_subprocess.py => brain_subprocess.pyx} | 0
 astroid/brain/{brain_threading.py => brain_threading.pyx}   | 0
 astroid/brain/{brain_typing.py => brain_typing.pyx}         | 0
 astroid/brain/{brain_uuid.py => brain_uuid.pyx}             | 0
 astroid/{builder.py => builder.pyx}                         | 0
 astroid/{context.py => context.pyx}                         | 0
 astroid/{decorators.py => decorators.pyx}                   | 0
 astroid/{exceptions.py => exceptions.pyx}                   | 0
 astroid/{helpers.py => helpers.pyx}                         | 0
 astroid/inference.py                                        | 4 ++--
 astroid/interpreter/_import/{spec.py => spec.pyx}           | 0
 astroid/interpreter/_import/{util.py => util.pyx}           | 0
 astroid/interpreter/{dunder_lookup.py => dunder_lookup.pyx} | 0
 astroid/interpreter/{objectmodel.py => objectmodel.pyx}     | 0
 astroid/{manager.py => manager.pyx}                         | 0
 astroid/{mixins.py => mixins.pyx}                           | 0
 astroid/{modutils.py => modutils.pyx}                       | 0
 astroid/{node_classes.py => node_classes.pyx}               | 0
 astroid/{nodes.py => nodes.pyx}                             | 0
 astroid/{objects.py => objects.pyx}                         | 0
 astroid/protocols.py                                        | 1 -
 astroid/{raw_building.py => raw_building.pyx}               | 6 ++++--
 astroid/{rebuilder.py => rebuilder.pyx}                     | 0
 astroid/{scoped_nodes.py => scoped_nodes.pyx}               | 0
 astroid/{test_utils.py => test_utils.pyx}                   | 0
 astroid/tests/__init__.py                                   | 0
 astroid/{transforms.py => transforms.pyx}                   | 0
 astroid/{util.py => util.pyx}                               | 0
 setup.py                                                    | 2 ++
 58 files changed, 10 insertions(+), 5 deletions(-)
 rename astroid/{__init__.py => __init__.pyx} (100%)
 rename astroid/{_ast.py => _ast.pyx} (100%)
 rename astroid/{arguments.py => arguments.pyx} (100%)
 rename astroid/{as_string.py => as_string.pyx} (100%)
 rename astroid/{bases.py => bases.pyx} (100%)
 rename astroid/brain/{brain_argparse.py => brain_argparse.pyx} (100%)
 rename astroid/brain/{brain_attrs.py => brain_attrs.pyx} (100%)
 rename astroid/brain/{brain_builtin_inference.py => brain_builtin_inference.pyx} (100%)
 rename astroid/brain/{brain_collections.py => brain_collections.pyx} (100%)
 rename astroid/brain/{brain_curses.py => brain_curses.pyx} (100%)
 rename astroid/brain/{brain_dateutil.py => brain_dateutil.pyx} (100%)
 rename astroid/brain/{brain_fstrings.py => brain_fstrings.pyx} (100%)
 rename astroid/brain/{brain_functools.py => brain_functools.pyx} (100%)
 rename astroid/brain/{brain_gi.py => brain_gi.pyx} (100%)
 rename astroid/brain/{brain_hashlib.py => brain_hashlib.pyx} (100%)
 rename astroid/brain/{brain_io.py => brain_io.pyx} (100%)
 rename astroid/brain/{brain_mechanize.py => brain_mechanize.pyx} (100%)
 rename astroid/brain/{brain_multiprocessing.py => brain_multiprocessing.pyx} (100%)
 rename astroid/brain/{brain_namedtuple_enum.py => brain_namedtuple_enum.pyx} (100%)
 rename astroid/brain/{brain_nose.py => brain_nose.pyx} (100%)
 rename astroid/brain/{brain_numpy.py => brain_numpy.pyx} (100%)
 rename astroid/brain/{brain_pkg_resources.py => brain_pkg_resources.pyx} (100%)
 rename astroid/brain/{brain_pytest.py => brain_pytest.pyx} (100%)
 rename astroid/brain/{brain_qt.py => brain_qt.pyx} (100%)
 rename astroid/brain/{brain_random.py => brain_random.pyx} (100%)
 rename astroid/brain/{brain_re.py => brain_re.pyx} (100%)
 rename astroid/brain/{brain_six.py => brain_six.pyx} (100%)
 rename astroid/brain/{brain_ssl.py => brain_ssl.pyx} (100%)
 rename astroid/brain/{brain_subprocess.py => brain_subprocess.pyx} (100%)
 rename astroid/brain/{brain_threading.py => brain_threading.pyx} (100%)
 rename astroid/brain/{brain_typing.py => brain_typing.pyx} (100%)
 rename astroid/brain/{brain_uuid.py => brain_uuid.pyx} (100%)
 rename astroid/{builder.py => builder.pyx} (100%)
 rename astroid/{context.py => context.pyx} (100%)
 rename astroid/{decorators.py => decorators.pyx} (100%)
 rename astroid/{exceptions.py => exceptions.pyx} (100%)
 rename astroid/{helpers.py => helpers.pyx} (100%)
 rename astroid/interpreter/_import/{spec.py => spec.pyx} (100%)
 rename astroid/interpreter/_import/{util.py => util.pyx} (100%)
 rename astroid/interpreter/{dunder_lookup.py => dunder_lookup.pyx} (100%)
 rename astroid/interpreter/{objectmodel.py => objectmodel.pyx} (100%)
 rename astroid/{manager.py => manager.pyx} (100%)
 rename astroid/{mixins.py => mixins.pyx} (100%)
 rename astroid/{modutils.py => modutils.pyx} (100%)
 rename astroid/{node_classes.py => node_classes.pyx} (100%)
 rename astroid/{nodes.py => nodes.pyx} (100%)
 rename astroid/{objects.py => objects.pyx} (100%)
 rename astroid/{raw_building.py => raw_building.pyx} (99%)
 rename astroid/{rebuilder.py => rebuilder.pyx} (100%)
 rename astroid/{scoped_nodes.py => scoped_nodes.pyx} (100%)
 rename astroid/{test_utils.py => test_utils.pyx} (100%)
 delete mode 100644 astroid/tests/__init__.py
 rename astroid/{transforms.py => transforms.pyx} (100%)
 rename astroid/{util.py => util.pyx} (100%)

diff --git a/.gitignore b/.gitignore
index 66d64d3e5d..cf3045d5bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,5 @@ astroid.egg-info/
 .cache/
 .eggs/
 .pytest_cache/
+*.c
+*.so
diff --git a/astroid/__init__.py b/astroid/__init__.pyx
similarity index 100%
rename from astroid/__init__.py
rename to astroid/__init__.pyx
diff --git a/astroid/_ast.py b/astroid/_ast.pyx
similarity index 100%
rename from astroid/_ast.py
rename to astroid/_ast.pyx
diff --git a/astroid/arguments.py b/astroid/arguments.pyx
similarity index 100%
rename from astroid/arguments.py
rename to astroid/arguments.pyx
diff --git a/astroid/as_string.py b/astroid/as_string.pyx
similarity index 100%
rename from astroid/as_string.py
rename to astroid/as_string.pyx
diff --git a/astroid/bases.py b/astroid/bases.pyx
similarity index 100%
rename from astroid/bases.py
rename to astroid/bases.pyx
diff --git a/astroid/brain/brain_argparse.py b/astroid/brain/brain_argparse.pyx
similarity index 100%
rename from astroid/brain/brain_argparse.py
rename to astroid/brain/brain_argparse.pyx
diff --git a/astroid/brain/brain_attrs.py b/astroid/brain/brain_attrs.pyx
similarity index 100%
rename from astroid/brain/brain_attrs.py
rename to astroid/brain/brain_attrs.pyx
diff --git a/astroid/brain/brain_builtin_inference.py b/astroid/brain/brain_builtin_inference.pyx
similarity index 100%
rename from astroid/brain/brain_builtin_inference.py
rename to astroid/brain/brain_builtin_inference.pyx
diff --git a/astroid/brain/brain_collections.py b/astroid/brain/brain_collections.pyx
similarity index 100%
rename from astroid/brain/brain_collections.py
rename to astroid/brain/brain_collections.pyx
diff --git a/astroid/brain/brain_curses.py b/astroid/brain/brain_curses.pyx
similarity index 100%
rename from astroid/brain/brain_curses.py
rename to astroid/brain/brain_curses.pyx
diff --git a/astroid/brain/brain_dateutil.py b/astroid/brain/brain_dateutil.pyx
similarity index 100%
rename from astroid/brain/brain_dateutil.py
rename to astroid/brain/brain_dateutil.pyx
diff --git a/astroid/brain/brain_fstrings.py b/astroid/brain/brain_fstrings.pyx
similarity index 100%
rename from astroid/brain/brain_fstrings.py
rename to astroid/brain/brain_fstrings.pyx
diff --git a/astroid/brain/brain_functools.py b/astroid/brain/brain_functools.pyx
similarity index 100%
rename from astroid/brain/brain_functools.py
rename to astroid/brain/brain_functools.pyx
diff --git a/astroid/brain/brain_gi.py b/astroid/brain/brain_gi.pyx
similarity index 100%
rename from astroid/brain/brain_gi.py
rename to astroid/brain/brain_gi.pyx
diff --git a/astroid/brain/brain_hashlib.py b/astroid/brain/brain_hashlib.pyx
similarity index 100%
rename from astroid/brain/brain_hashlib.py
rename to astroid/brain/brain_hashlib.pyx
diff --git a/astroid/brain/brain_io.py b/astroid/brain/brain_io.pyx
similarity index 100%
rename from astroid/brain/brain_io.py
rename to astroid/brain/brain_io.pyx
diff --git a/astroid/brain/brain_mechanize.py b/astroid/brain/brain_mechanize.pyx
similarity index 100%
rename from astroid/brain/brain_mechanize.py
rename to astroid/brain/brain_mechanize.pyx
diff --git a/astroid/brain/brain_multiprocessing.py b/astroid/brain/brain_multiprocessing.pyx
similarity index 100%
rename from astroid/brain/brain_multiprocessing.py
rename to astroid/brain/brain_multiprocessing.pyx
diff --git a/astroid/brain/brain_namedtuple_enum.py b/astroid/brain/brain_namedtuple_enum.pyx
similarity index 100%
rename from astroid/brain/brain_namedtuple_enum.py
rename to astroid/brain/brain_namedtuple_enum.pyx
diff --git a/astroid/brain/brain_nose.py b/astroid/brain/brain_nose.pyx
similarity index 100%
rename from astroid/brain/brain_nose.py
rename to astroid/brain/brain_nose.pyx
diff --git a/astroid/brain/brain_numpy.py b/astroid/brain/brain_numpy.pyx
similarity index 100%
rename from astroid/brain/brain_numpy.py
rename to astroid/brain/brain_numpy.pyx
diff --git a/astroid/brain/brain_pkg_resources.py b/astroid/brain/brain_pkg_resources.pyx
similarity index 100%
rename from astroid/brain/brain_pkg_resources.py
rename to astroid/brain/brain_pkg_resources.pyx
diff --git a/astroid/brain/brain_pytest.py b/astroid/brain/brain_pytest.pyx
similarity index 100%
rename from astroid/brain/brain_pytest.py
rename to astroid/brain/brain_pytest.pyx
diff --git a/astroid/brain/brain_qt.py b/astroid/brain/brain_qt.pyx
similarity index 100%
rename from astroid/brain/brain_qt.py
rename to astroid/brain/brain_qt.pyx
diff --git a/astroid/brain/brain_random.py b/astroid/brain/brain_random.pyx
similarity index 100%
rename from astroid/brain/brain_random.py
rename to astroid/brain/brain_random.pyx
diff --git a/astroid/brain/brain_re.py b/astroid/brain/brain_re.pyx
similarity index 100%
rename from astroid/brain/brain_re.py
rename to astroid/brain/brain_re.pyx
diff --git a/astroid/brain/brain_six.py b/astroid/brain/brain_six.pyx
similarity index 100%
rename from astroid/brain/brain_six.py
rename to astroid/brain/brain_six.pyx
diff --git a/astroid/brain/brain_ssl.py b/astroid/brain/brain_ssl.pyx
similarity index 100%
rename from astroid/brain/brain_ssl.py
rename to astroid/brain/brain_ssl.pyx
diff --git a/astroid/brain/brain_subprocess.py b/astroid/brain/brain_subprocess.pyx
similarity index 100%
rename from astroid/brain/brain_subprocess.py
rename to astroid/brain/brain_subprocess.pyx
diff --git a/astroid/brain/brain_threading.py b/astroid/brain/brain_threading.pyx
similarity index 100%
rename from astroid/brain/brain_threading.py
rename to astroid/brain/brain_threading.pyx
diff --git a/astroid/brain/brain_typing.py b/astroid/brain/brain_typing.pyx
similarity index 100%
rename from astroid/brain/brain_typing.py
rename to astroid/brain/brain_typing.pyx
diff --git a/astroid/brain/brain_uuid.py b/astroid/brain/brain_uuid.pyx
similarity index 100%
rename from astroid/brain/brain_uuid.py
rename to astroid/brain/brain_uuid.pyx
diff --git a/astroid/builder.py b/astroid/builder.pyx
similarity index 100%
rename from astroid/builder.py
rename to astroid/builder.pyx
diff --git a/astroid/context.py b/astroid/context.pyx
similarity index 100%
rename from astroid/context.py
rename to astroid/context.pyx
diff --git a/astroid/decorators.py b/astroid/decorators.pyx
similarity index 100%
rename from astroid/decorators.py
rename to astroid/decorators.pyx
diff --git a/astroid/exceptions.py b/astroid/exceptions.pyx
similarity index 100%
rename from astroid/exceptions.py
rename to astroid/exceptions.pyx
diff --git a/astroid/helpers.py b/astroid/helpers.pyx
similarity index 100%
rename from astroid/helpers.py
rename to astroid/helpers.pyx
diff --git a/astroid/inference.py b/astroid/inference.py
index b61427a055..145dd3ddd1 100644
--- a/astroid/inference.py
+++ b/astroid/inference.py
@@ -539,9 +539,9 @@ def infer_unaryop(self, context=None):
 nodes.UnaryOp._infer = infer_unaryop
 
 
-def _is_not_implemented(const):
+def _is_not_implemented(const_node):
     """Check if the given const node is NotImplemented."""
-    return isinstance(const, nodes.Const) and const.value is NotImplemented
+    return isinstance(const_node, nodes.Const) and const_node.value is NotImplemented
 
 
 def _invoke_binop_inference(instance, opnode, op, other, context, method_name):
diff --git a/astroid/interpreter/_import/spec.py b/astroid/interpreter/_import/spec.pyx
similarity index 100%
rename from astroid/interpreter/_import/spec.py
rename to astroid/interpreter/_import/spec.pyx
diff --git a/astroid/interpreter/_import/util.py b/astroid/interpreter/_import/util.pyx
similarity index 100%
rename from astroid/interpreter/_import/util.py
rename to astroid/interpreter/_import/util.pyx
diff --git a/astroid/interpreter/dunder_lookup.py b/astroid/interpreter/dunder_lookup.pyx
similarity index 100%
rename from astroid/interpreter/dunder_lookup.py
rename to astroid/interpreter/dunder_lookup.pyx
diff --git a/astroid/interpreter/objectmodel.py b/astroid/interpreter/objectmodel.pyx
similarity index 100%
rename from astroid/interpreter/objectmodel.py
rename to astroid/interpreter/objectmodel.pyx
diff --git a/astroid/manager.py b/astroid/manager.pyx
similarity index 100%
rename from astroid/manager.py
rename to astroid/manager.pyx
diff --git a/astroid/mixins.py b/astroid/mixins.pyx
similarity index 100%
rename from astroid/mixins.py
rename to astroid/mixins.pyx
diff --git a/astroid/modutils.py b/astroid/modutils.pyx
similarity index 100%
rename from astroid/modutils.py
rename to astroid/modutils.pyx
diff --git a/astroid/node_classes.py b/astroid/node_classes.pyx
similarity index 100%
rename from astroid/node_classes.py
rename to astroid/node_classes.pyx
diff --git a/astroid/nodes.py b/astroid/nodes.pyx
similarity index 100%
rename from astroid/nodes.py
rename to astroid/nodes.pyx
diff --git a/astroid/objects.py b/astroid/objects.pyx
similarity index 100%
rename from astroid/objects.py
rename to astroid/objects.pyx
diff --git a/astroid/protocols.py b/astroid/protocols.py
index 91fe5a34bd..336e686611 100644
--- a/astroid/protocols.py
+++ b/astroid/protocols.py
@@ -286,7 +286,6 @@ def sequence_assigned_stmts(self, node=None, context=None, asspath=None):
 nodes.Tuple.assigned_stmts = sequence_assigned_stmts
 nodes.List.assigned_stmts = sequence_assigned_stmts
 
-
 def assend_assigned_stmts(self, node=None, context=None, asspath=None):
     return self.parent.assigned_stmts(node=self, context=context)
 nodes.AssignName.assigned_stmts = assend_assigned_stmts
diff --git a/astroid/raw_building.py b/astroid/raw_building.pyx
similarity index 99%
rename from astroid/raw_building.py
rename to astroid/raw_building.pyx
index 1e437eac31..6a9ac161f8 100644
--- a/astroid/raw_building.py
+++ b/astroid/raw_building.pyx
@@ -73,6 +73,8 @@ def attach_dummy_node(node, name, runtime_object=_marker):
     enode.object = runtime_object
     _attach_local_node(node, enode, name)
 
+cimport cython
+@cython.binding(True)
 def _has_underlying_object(self):
     return self.object is not None and self.object is not _marker
 
@@ -397,8 +399,8 @@ def _astroid_bootstrapping(astroid_builtin=None):
 _astroid_bootstrapping()
 
 # TODO : find a nicer way to handle this situation;
-def _set_proxied(const):
-    return _CONST_PROXY[const.value.__class__]
+def _set_proxied(const_node):
+    return _CONST_PROXY[const_node.value.__class__]
 nodes.Const._proxied = property(_set_proxied)
 
 _GeneratorType = nodes.ClassDef(types.GeneratorType.__name__, types.GeneratorType.__doc__)
diff --git a/astroid/rebuilder.py b/astroid/rebuilder.pyx
similarity index 100%
rename from astroid/rebuilder.py
rename to astroid/rebuilder.pyx
diff --git a/astroid/scoped_nodes.py b/astroid/scoped_nodes.pyx
similarity index 100%
rename from astroid/scoped_nodes.py
rename to astroid/scoped_nodes.pyx
diff --git a/astroid/test_utils.py b/astroid/test_utils.pyx
similarity index 100%
rename from astroid/test_utils.py
rename to astroid/test_utils.pyx
diff --git a/astroid/tests/__init__.py b/astroid/tests/__init__.py
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/astroid/transforms.py b/astroid/transforms.pyx
similarity index 100%
rename from astroid/transforms.py
rename to astroid/transforms.pyx
diff --git a/astroid/util.py b/astroid/util.pyx
similarity index 100%
rename from astroid/util.py
rename to astroid/util.pyx
diff --git a/setup.py b/setup.py
index 2ad90aac01..90562b535a 100644
--- a/setup.py
+++ b/setup.py
@@ -15,6 +15,7 @@
 from setuptools import setup, find_packages
 from setuptools.command import easy_install
 from setuptools.command import install_lib
+from Cython.Build import cythonize
 
 
 real_path = os.path.realpath(__file__)
@@ -45,6 +46,7 @@ def install():
                  setup_requires=['pytest-runner'],
                  test_suite='test',
                  tests_require=['pytest'],
+                 ext_modules=cythonize(["astroid/*.pyx", "astroid/interpreter/*.pyx", "astroid/interpreter/_import/*.pyx", "astroid/brain/*.pyx"])
                  )
 
 

From c9fef18f396d55ac1113ea331f75cdc1dc0839ba Mon Sep 17 00:00:00 2001
From: kodonnell <kodonnell@users.noreply.github.com>
Date: Fri, 17 Aug 2018 20:46:07 +1200
Subject: [PATCH 2/4] fixed some/all of the dynamic binding

---
 astroid/{inference.py => inference.pyx} | 30 +++++++++++++++++++++----
 astroid/{protocols.py => protocols.pyx} | 16 +++++++++++++
 astroid/raw_building.pyx                |  2 +-
 3 files changed, 43 insertions(+), 5 deletions(-)
 rename astroid/{inference.py => inference.pyx} (98%)
 rename astroid/{protocols.py => protocols.pyx} (98%)

diff --git a/astroid/inference.py b/astroid/inference.pyx
similarity index 98%
rename from astroid/inference.py
rename to astroid/inference.pyx
index 145dd3ddd1..48d4eb508b 100644
--- a/astroid/inference.py
+++ b/astroid/inference.pyx
@@ -35,6 +35,7 @@
 from astroid.interpreter import dunder_lookup
 from astroid import protocols
 from astroid import util
+cimport cython
 
 
 MANAGER = manager.AstroidManager()
@@ -42,7 +43,7 @@
 
 # .infer method ###############################################################
 
-
+@cython.binding(True)
 def infer_end(self, context=None):
     """inference's end for node such as Module, ClassDef, FunctionDef,
     Const...
@@ -78,6 +79,7 @@ def _infer_sequence_helper(node, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_sequence(self, context=None):
     if not any(isinstance(e, nodes.Starred) for e in self.elts):
         yield self
@@ -93,6 +95,7 @@ def infer_sequence(self, context=None):
 nodes.Set._infer = infer_sequence
 
 
+@cython.binding(True)
 def infer_map(self, context=None):
     if not any(isinstance(k, nodes.DictUnpack) for k, _ in self.items):
         yield self
@@ -171,6 +174,7 @@ def _higher_function_scope(node):
         return current.parent
     return None
 
+@cython.binding(True)
 def infer_name(self, context=None):
     """infer a Name: use name lookup rules"""
     frame, stmts = self.lookup(self.name)
@@ -190,14 +194,13 @@ def infer_name(self, context=None):
     return bases._infer_stmts(stmts, context, frame)
 
 # pylint: disable=no-value-for-parameter
-nodes.Name._infer = decorators.raise_if_nothing_inferred(
-    decorators.path_wrapper(infer_name)
-)
+nodes.Name._infer = decorators.raise_if_nothing_inferred(decorators.path_wrapper(infer_name))
 nodes.AssignName.infer_lhs = infer_name # won't work with a path wrapper
 
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_call(self, context=None):
     """infer a Call node by trying to guess what the function returns"""
     callcontext = context.clone()
@@ -226,6 +229,7 @@ def infer_call(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_import(self, context=None, asname=True):
     """infer an Import node: return the imported module/object"""
     name = context.lookupname
@@ -247,6 +251,7 @@ def infer_import(self, context=None, asname=True):
 nodes.Import._infer = infer_import
 
 
+@cython.binding(True)
 def infer_name_module(self, name):
     context = contextmod.InferenceContext()
     context.lookupname = name
@@ -256,6 +261,7 @@ def infer_name_module(self, name):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_import_from(self, context=None, asname=True):
     """infer a ImportFrom node: return the imported module/object"""
     name = context.lookupname
@@ -288,6 +294,7 @@ def infer_import_from(self, context=None, asname=True):
 
 
 @decorators.raise_if_nothing_inferred
+@cython.binding(True)
 def infer_attribute(self, context=None):
     """infer an Attribute node by using getattr on the associated object"""
     for owner in self.expr.infer(context):
@@ -325,6 +332,7 @@ def infer_attribute(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_global(self, context=None):
     if context.lookupname is None:
         raise exceptions.InferenceError(node=self, context=context)
@@ -345,6 +353,7 @@ def infer_global(self, context=None):
 
 
 @decorators.raise_if_nothing_inferred
+@cython.binding(True)
 def infer_subscript(self, context=None):
     """Inference for subscripts
 
@@ -407,6 +416,7 @@ def infer_subscript(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def _infer_boolop(self, context=None):
     """Infer a boolean operation (and / or / not).
 
@@ -462,6 +472,7 @@ def _infer_boolop(self, context=None):
 
 # UnaryOp, BinOp and AugAssign inferences
 
+@cython.binding(True)
 def _filter_operation_errors(self, infer_callable, context, error):
     for result in infer_callable(self, context):
         if isinstance(result, error):
@@ -473,6 +484,7 @@ def _filter_operation_errors(self, infer_callable, context, error):
             yield result
 
 
+@cython.binding(True)
 def _infer_unaryop(self, context=None):
     """Infer what an UnaryOp should return when evaluated."""
     for operand in self.operand.infer(context):
@@ -529,6 +541,7 @@ def _infer_unaryop(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_unaryop(self, context=None):
     """Infer what an UnaryOp should return when evaluated."""
     yield from _filter_operation_errors(self, _infer_unaryop, context,
@@ -711,6 +724,7 @@ def _infer_binary_operation(left, right, binary_opnode, context, flow_factory):
     yield util.BadBinaryOperationMessage(left_type, binary_opnode.op, right_type)
 
 
+@cython.binding(True)
 def _infer_binop(self, context):
     """Binary operation inference logic."""
     if context is None:
@@ -745,6 +759,7 @@ def _infer_binop(self, context):
 
 @decorators.yes_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_binop(self, context=None):
     return _filter_operation_errors(self, _infer_binop, context,
                                     util.BadBinaryOperationMessage)
@@ -753,6 +768,7 @@ def infer_binop(self, context=None):
 nodes.BinOp._infer = infer_binop
 
 
+@cython.binding(True)
 def _infer_augassign(self, context=None):
     """Inference logic for augmented binary operations."""
     if context is None:
@@ -779,6 +795,7 @@ def _infer_augassign(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_augassign(self, context=None):
     return _filter_operation_errors(self, _infer_augassign, context,
                                     util.BadBinaryOperationMessage)
@@ -791,6 +808,7 @@ def infer_augassign(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_arguments(self, context=None):
     name = context.lookupname
     if name is None:
@@ -801,6 +819,7 @@ def infer_arguments(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_assign(self, context=None):
     """infer a AssignName/AssignAttr: need to inspect the RHS part of the
     assign node
@@ -819,6 +838,7 @@ def infer_assign(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_empty_node(self, context=None):
     if not self.has_underlying_object():
         yield util.Uninferable
@@ -832,12 +852,14 @@ def infer_empty_node(self, context=None):
 
 @decorators.raise_if_nothing_inferred
 @decorators.path_wrapper
+@cython.binding(True)
 def infer_index(self, context=None):
     return self.value.infer(context)
 nodes.Index._infer = infer_index
 
 # TODO: move directly into bases.Instance when the dependency hell
 # will be solved.
+@cython.binding(True)
 def instance_getitem(self, index, context=None):
     # Rewrap index to Const for this case
     new_context = contextmod.bind_context_to_node(context, self)
diff --git a/astroid/protocols.py b/astroid/protocols.pyx
similarity index 98%
rename from astroid/protocols.py
rename to astroid/protocols.pyx
index 336e686611..59cddddb11 100644
--- a/astroid/protocols.py
+++ b/astroid/protocols.pyx
@@ -23,6 +23,7 @@
 import collections
 import operator as operator_mod
 import sys
+cimport cython
 
 from astroid import Store
 from astroid import arguments
@@ -118,6 +119,7 @@ def _infer_unary_op(obj, op):
 
 
 @decorators.yes_if_nothing_inferred
+@cython.binding(True)
 def const_infer_binary_op(self, opnode, operator, other, context, _):
     not_implemented = nodes.Const(NotImplemented)
     if isinstance(other, nodes.Const):
@@ -141,6 +143,7 @@ def const_infer_binary_op(self, opnode, operator, other, context, _):
 nodes.Const.infer_binary_op = const_infer_binary_op
 
 
+@cython.binding(True)
 def _multiply_seq_by_int(self, opnode, other, context):
     node = self.__class__(parent=opnode)
     elts = []
@@ -167,6 +170,7 @@ def _filter_uninferable_nodes(elts, context):
 
 
 @decorators.yes_if_nothing_inferred
+@cython.binding(True)
 def tl_infer_binary_op(self, opnode, operator, other, context, method):
     not_implemented = nodes.Const(NotImplemented)
     if isinstance(other, self.__class__) and operator == '+':
@@ -195,6 +199,7 @@ def tl_infer_binary_op(self, opnode, operator, other, context, method):
 
 
 @decorators.yes_if_nothing_inferred
+@cython.binding(True)
 def instance_class_infer_binary_op(self, opnode, operator, other, context, method):
     return method.infer_call_result(self, context)
 
@@ -252,6 +257,7 @@ def _resolve_looppart(parts, asspath, context):
                     break
 
 @decorators.raise_if_nothing_inferred
+@cython.binding(True)
 def for_assigned_stmts(self, node=None, context=None, asspath=None):
     if isinstance(self, nodes.AsyncFor) or getattr(self, 'is_async', False):
         # Skip inferring of async code for now
@@ -270,6 +276,7 @@ def for_assigned_stmts(self, node=None, context=None, asspath=None):
 nodes.Comprehension.assigned_stmts = for_assigned_stmts
 
 
+@cython.binding(True)
 def sequence_assigned_stmts(self, node=None, context=None, asspath=None):
     if asspath is None:
         asspath = []
@@ -286,12 +293,14 @@ def sequence_assigned_stmts(self, node=None, context=None, asspath=None):
 nodes.Tuple.assigned_stmts = sequence_assigned_stmts
 nodes.List.assigned_stmts = sequence_assigned_stmts
 
+@cython.binding(True)
 def assend_assigned_stmts(self, node=None, context=None, asspath=None):
     return self.parent.assigned_stmts(node=self, context=context)
 nodes.AssignName.assigned_stmts = assend_assigned_stmts
 nodes.AssignAttr.assigned_stmts = assend_assigned_stmts
 
 
+@cython.binding(True)
 def _arguments_infer_argname(self, name, context):
     # arguments information may be missing, in which case we can't do anything
     # more
@@ -339,6 +348,7 @@ def _arguments_infer_argname(self, name, context):
         yield util.Uninferable
 
 
+@cython.binding(True)
 def arguments_assigned_stmts(self, node=None, context=None, asspath=None):
     if context.callcontext:
         # reset call context/name
@@ -353,6 +363,7 @@ def arguments_assigned_stmts(self, node=None, context=None, asspath=None):
 
 
 @decorators.raise_if_nothing_inferred
+@cython.binding(True)
 def assign_assigned_stmts(self, node=None, context=None, asspath=None):
     if not asspath:
         yield self.value
@@ -363,6 +374,7 @@ def assign_assigned_stmts(self, node=None, context=None, asspath=None):
                 assign_path=asspath, context=context)
 
 
+@cython.binding(True)
 def assign_annassigned_stmts(self, node=None, context=None, asspath=None):
     for inferred in assign_assigned_stmts(self, node, context, asspath):
         if inferred is None:
@@ -416,6 +428,7 @@ def _resolve_asspart(parts, asspath, context):
 
 
 @decorators.raise_if_nothing_inferred
+@cython.binding(True)
 def excepthandler_assigned_stmts(self, node=None, context=None, asspath=None):
     for assigned in node_classes.unpack_infer(self.type):
         if isinstance(assigned, nodes.ClassDef):
@@ -429,6 +442,7 @@ def excepthandler_assigned_stmts(self, node=None, context=None, asspath=None):
 nodes.ExceptHandler.assigned_stmts = excepthandler_assigned_stmts
 
 
+@cython.binding(True)
 def _infer_context_manager(self, mgr, context):
     try:
         inferred = next(mgr.infer(context=context))
@@ -480,6 +494,7 @@ def _infer_context_manager(self, mgr, context):
 
 
 @decorators.raise_if_nothing_inferred
+@cython.binding(True)
 def with_assigned_stmts(self, node=None, context=None, asspath=None):
     """Infer names and other nodes from a *with* statement.
 
@@ -542,6 +557,7 @@ def __enter__(self):
 
 
 @decorators.yes_if_nothing_inferred
+@cython.binding(True)
 def starred_assigned_stmts(self, node=None, context=None, asspath=None):
     """
     Arguments:
diff --git a/astroid/raw_building.pyx b/astroid/raw_building.pyx
index 6a9ac161f8..08da240f5f 100644
--- a/astroid/raw_building.pyx
+++ b/astroid/raw_building.pyx
@@ -23,6 +23,7 @@ import logging
 import os
 import sys
 import types
+cimport cython
 
 from astroid import bases
 from astroid import manager
@@ -73,7 +74,6 @@ def attach_dummy_node(node, name, runtime_object=_marker):
     enode.object = runtime_object
     _attach_local_node(node, enode, name)
 
-cimport cython
 @cython.binding(True)
 def _has_underlying_object(self):
     return self.object is not None and self.object is not _marker

From 61621d01112d45b8404f3760ed6f396bdd4fdb76 Mon Sep 17 00:00:00 2001
From: kodonnell <kodonnell@users.noreply.github.com>
Date: Sun, 12 May 2019 21:29:54 +1200
Subject: [PATCH 3/4] py3

---
 setup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 90562b535a..f38998da70 100644
--- a/setup.py
+++ b/setup.py
@@ -46,7 +46,7 @@ def install():
                  setup_requires=['pytest-runner'],
                  test_suite='test',
                  tests_require=['pytest'],
-                 ext_modules=cythonize(["astroid/*.pyx", "astroid/interpreter/*.pyx", "astroid/interpreter/_import/*.pyx", "astroid/brain/*.pyx"])
+                 ext_modules=cythonize(["astroid/*.pyx", "astroid/interpreter/*.pyx", "astroid/interpreter/_import/*.pyx", "astroid/brain/*.pyx"], compiler_directives={'language_level': '3'})
                  )
 
 

From b46ede8ee8dd924c67595064a0116932e6c8e94f Mon Sep 17 00:00:00 2001
From: kodonnell <kodonnell@users.noreply.github.com>
Date: Sun, 12 May 2019 21:53:39 +1200
Subject: [PATCH 4/4] cython build dep

---
 astroid/__pkginfo__.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/astroid/__pkginfo__.py b/astroid/__pkginfo__.py
index ea8708400d..32761618cb 100644
--- a/astroid/__pkginfo__.py
+++ b/astroid/__pkginfo__.py
@@ -31,6 +31,7 @@
     "wrapt",
     'typing;python_version<"3.5"',
     'typed-ast>=1.3.0;implementation_name== "cpython"',
+    'Cython'
 ]
 
 # pylint: disable=redefined-builtin; why license is a builtin anyway?