CyFunction's support for classmethod and staticmethod

Cython/Compiler/ExprNodes.py

@@ -5832,6 +5832,7 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
     #  pymethdef_cname   string             PyMethodDef structure
     #  self_object       ExprNode or None
     #  binding           bool
+    #  def_node          DefNode            the Python function node
     #  module_name       EncodedString      Name of defining module
     #  code_object       CodeObjectNode     the PyCodeObject creator node
 
@@ -5840,6 +5841,7 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
     self_object = None
     code_object = None
     binding = False
+    def_node = None
 
     type = py_object_type
     is_temp = 1
@@ -5873,25 +5875,50 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
 
     def generate_result_code(self, code):
         if self.binding:
-            if self.specialized_cpdefs:
-                constructor = "__pyx_FusedFunction_NewEx"
-            else:
-                constructor = "__Pyx_CyFunction_NewEx"
+            self.generate_cyfunction_code(code)
+        else:
+            self.generate_pycfunction_code(code)
 
-            if self.code_object:
-                code_object_result = ', ' + self.code_object.py_result()
-            else:
-                code_object_result = ', NULL'
+    def generate_pycfunction_code(self, code):
+        py_mod_name = self.get_py_mod_name(code)
+        code.putln(
+            '%s = PyCFunction_NewEx(&%s, %s, %s); %s' % (
+                self.result(),
+                self.pymethdef_cname,
+                self.self_result_code(),
+                py_mod_name,
+                code.error_goto_if_null(self.result(), self.pos)))
+
+        code.put_gotref(self.py_result())
+
+    def generate_cyfunction_code(self, code):
+        if self.specialized_cpdefs:
+            constructor = "__pyx_FusedFunction_NewEx"
         else:
-            constructor = "PyCFunction_NewEx"
-            code_object_result = ''
+            constructor = "__Pyx_CyFunction_NewEx"
+
+        if self.code_object:
+            code_object_result = self.code_object.py_result()
+        else:
+            code_object_result = 'NULL'
+
+        flags = []
+        if self.def_node.is_staticmethod:
+            flags.append('__Pyx_CYFUNCTION_STATICMETHOD')
+        elif self.def_node.is_classmethod:
+            flags.append('__Pyx_CYFUNCTION_CLASSMETHOD')
+        if flags:
+            flags = ' | '.join(flags)
+        else:
+            flags = '0'
 
         py_mod_name = self.get_py_mod_name(code)
         code.putln(
-            '%s = %s(&%s, %s, %s%s); %s' % (
+            '%s = %s(&%s, %s, %s, %s, %s); %s' % (
                 self.result(),
                 constructor,
                 self.pymethdef_cname,
+                flags,
                 self.self_result_code(),
                 py_mod_name,
                 code_object_result,
@@ -5900,9 +5927,9 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
         code.put_gotref(self.py_result())
 
         if self.specialized_cpdefs:
-            self.generate_fused_cpdef(code, code_object_result)
+            self.generate_fused_cpdef(code, code_object_result, flags)
 
-    def generate_fused_cpdef(self, code, code_object_result):
+    def generate_fused_cpdef(self, code, code_object_result, flags):
         """
         Generate binding function objects for all specialized cpdefs, and the
         original fused one. The fused function gets a dict __signatures__
@@ -5924,6 +5951,7 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
             py_mod_name=self.get_py_mod_name(code),
             self=self.self_result_code(),
             code=code_object_result,
+            flags=flags,
             func=code.funcstate.allocate_temp(py_object_type,
                                               manage_ref=True),
             signature=code.funcstate.allocate_temp(py_object_type,
@@ -5945,7 +5973,7 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
                                     '"%(signature_string)s")')
 
             goto_err("%(func)s = __pyx_FusedFunction_NewEx("
-                            "&%(pymethdef_cname)s, %(self)s, %(py_mod_name)s %(code)s)")
+                            "&%(pymethdef_cname)s, %(flags)s, %(self)s, %(py_mod_name)s, %(code)s)")
 
             s = "PyDict_SetItem(%(sigdict)s, %(signature)s, %(func)s)"
             code.put_error_if_neg(self.pos, s % fmt_dict)
@@ -6040,7 +6068,6 @@ class LambdaNode(InnerFunctionNode):
 
     child_attrs = ['def_node']
 
-    def_node = None
     name = StringEncoding.EncodedString('<lambda>')
 
     def analyse_declarations(self, env):

Cython/Compiler/Nodes.py

@@ -2994,21 +2994,20 @@ class DefNode(FuncDefNode):
 
         if genv.is_closure_scope:
             rhs = self.py_cfunc_node = ExprNodes.InnerFunctionNode(
-                self.pos, pymethdef_cname = self.entry.pymethdef_cname,
-                code_object = ExprNodes.CodeObjectNode(self))
+                self.pos, def_node=self,
+                pymethdef_cname=self.entry.pymethdef_cname,
+                code_object=ExprNodes.CodeObjectNode(self))
         else:
             rhs = ExprNodes.PyCFunctionNode(
-                    self.pos,
-                    pymethdef_cname=self.entry.pymethdef_cname,
-                    binding=env.directives['binding'],
-                    specialized_cpdefs=self.specialized_cpdefs,
-                    code_object=ExprNodes.CodeObjectNode(self))
+                self.pos,
+                def_node=self,
+                pymethdef_cname=self.entry.pymethdef_cname,
+                binding=env.directives['binding'],
+                specialized_cpdefs=self.specialized_cpdefs,
+                code_object=ExprNodes.CodeObjectNode(self))
 
         if env.is_py_class_scope:
-            if not self.is_staticmethod and not self.is_classmethod:
-                rhs.binding = True
-            else:
-                rhs.binding = False
+            rhs.binding = True
 
         if self.decorators:
             for decorator in self.decorators[::-1]:

Cython/Utility/CythonFunction.c

@@ -4,8 +4,12 @@
 #define __Pyx_CyFunction_USED 1
 #include <structmember.h>
 
+#define __Pyx_CYFUNCTION_STATICMETHOD  0x01
+#define __Pyx_CYFUNCTION_CLASSMETHOD   0x02
+
 typedef struct {
     PyCFunctionObject func;
+    int flags;
     PyObject *func_dict;
     PyObject *func_weakreflist;
     PyObject *func_name;
@@ -15,8 +19,13 @@ typedef struct {
 
 static PyTypeObject *__pyx_CyFunctionType = 0;
 
-#define __Pyx_CyFunction_NewEx(ml, self, module, code) __Pyx_CyFunction_New(__pyx_CyFunctionType, ml, self, module, code)
-static PyObject *__Pyx_CyFunction_New(PyTypeObject *, PyMethodDef *ml, PyObject *self, PyObject *module, PyObject* code);
+#define __Pyx_CyFunction_NewEx(ml, flags, self, module, code) \
+    __Pyx_CyFunction_New(__pyx_CyFunctionType, ml, flags, self, module, code)
+
+static PyObject *__Pyx_CyFunction_New(PyTypeObject *,
+                                      PyMethodDef *ml, int flags,
+                                      PyObject *self, PyObject *module,
+                                      PyObject* code);
 
 static int __Pyx_CyFunction_init(void);
 
@@ -209,10 +218,12 @@ static PyMethodDef __pyx_CyFunction_methods[] = {
 };
 
 
-static PyObject *__Pyx_CyFunction_New(PyTypeObject *type, PyMethodDef *ml, PyObject *self, PyObject *module, PyObject* code) {
+static PyObject *__Pyx_CyFunction_New(PyTypeObject *type, PyMethodDef *ml, int flags,
+                                      PyObject *self, PyObject *module, PyObject* code) {
     __pyx_CyFunctionObject *op = PyObject_GC_New(__pyx_CyFunctionObject, type);
     if (op == NULL)
         return NULL;
+    op->flags = flags;
     op->func_weakreflist = NULL;
     op->func.m_ml = ml;
     Py_XINCREF(self);
@@ -262,6 +273,20 @@ static int __Pyx_CyFunction_traverse(__pyx_CyFunctionObject *m, visitproc visit,
 
 static PyObject *__Pyx_CyFunction_descr_get(PyObject *func, PyObject *obj, PyObject *type)
 {
+    __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
+
+    if (m->flags & __Pyx_CYFUNCTION_STATICMETHOD) {
+        Py_INCREF(func);
+        return func;
+    }
+
+    if (m->flags & __Pyx_CYFUNCTION_CLASSMETHOD) {
+        if (type == NULL)
+            type = (PyObject *)(Py_TYPE(obj));
+        return PyMethod_New(func,
+                            type, (PyObject *)(Py_TYPE(type)));
+    }
+
     if (obj == Py_None)
         obj = NULL;
     return PyMethod_New(func, obj, type);
@@ -356,9 +381,10 @@ typedef struct {
     PyObject *self;
 } __pyx_FusedFunctionObject;
 
-#define __pyx_FusedFunction_NewEx(ml, self, module, code) \
-        __pyx_FusedFunction_New(__pyx_FusedFunctionType, ml, self, module, code)
-static PyObject *__pyx_FusedFunction_New(PyTypeObject *type, PyMethodDef *ml,
+#define __pyx_FusedFunction_NewEx(ml, flags, self, module, code)         \
+        __pyx_FusedFunction_New(__pyx_FusedFunctionType, ml, flags, self, module, code)
+static PyObject *__pyx_FusedFunction_New(PyTypeObject *type,
+                                         PyMethodDef *ml, int flags,
                                          PyObject *self, PyObject *module,
                                          PyObject *code);
 
@@ -369,12 +395,12 @@ static int __pyx_FusedFunction_init(void);
 
 //////////////////// FusedFunction ////////////////////
 static PyObject *
-__pyx_FusedFunction_New(PyTypeObject *type, PyMethodDef *ml, PyObject *self,
+__pyx_FusedFunction_New(PyTypeObject *type, PyMethodDef *ml, int flags, PyObject *self,
                         PyObject *module, PyObject *code)
 {
-    __pyx_FusedFunctionObject *fusedfunc = \
-            (__pyx_FusedFunctionObject *) __Pyx_CyFunction_New(type, ml, self,
-                                                               module, code);
+    __pyx_FusedFunctionObject *fusedfunc =
+        (__pyx_FusedFunctionObject *) __Pyx_CyFunction_New(type, ml, flags,
+                                                           self, module, code);
     if (!fusedfunc)
         return NULL;
 
@@ -429,6 +455,7 @@ __pyx_FusedFunction_descr_get(PyObject *self, PyObject *obj, PyObject *type)
 
     meth = (__pyx_FusedFunctionObject *) __pyx_FusedFunction_NewEx(
                     ((PyCFunctionObject *) func)->m_ml,
+                    ((__pyx_CyFunctionObject *) func)->flags,
                     ((PyCFunctionObject *) func)->m_self,
                     ((PyCFunctionObject *) func)->m_module,
                     ((__pyx_CyFunctionObject *) func)->func_code);