streamline fallback method calls in utility code

Cython/Utility/Generator.c

@@ -56,6 +56,7 @@ static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue);
 //@requires: Exceptions.c::PyErrFetchRestore
 //@requires: Exceptions.c::SwapException
 //@requires: Exceptions.c::RaiseException
+//@requires: ObjectHandling.c::PyObjectCallMethod
 
 static PyObject *__Pyx_Generator_Next(PyObject *self);
 static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value);
@@ -285,7 +286,7 @@ static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value) {
             if (value == Py_None)
                 ret = PyIter_Next(yf);
             else
-                ret = PyObject_CallMethod(yf, (char*)"send", (char*)"O", value);
+                ret = __Pyx_PyObject_CallMethod1(yf, PYIDENT("send"), value);
         }
         gen->is_running = 0;
         //Py_DECREF(yf);

Cython/Utility/ObjectHandling.c

@@ -585,3 +585,27 @@ static CYTHON_INLINE int __Pyx_PySequence_Contains(PyObject* item, PyObject* seq
 static CYTHON_INLINE PyObject* __Pyx_PyBoolOrNull_FromLong(long b) {
     return unlikely(b < 0) ? NULL : __Pyx_PyBool_FromLong(b);
 }
+
+/////////////// PyObjectCallMethod.proto ///////////////
+//@substitute: naming
+
+static PyObject* __Pyx_PyObject_CallMethodTuple(PyObject* obj, PyObject* method_name, PyObject* args) {
+    PyObject *method, *result = NULL;
+    if (unlikely(!args)) return NULL;
+    method = PyObject_GetAttr(obj, method_name);
+    if (unlikely(!method)) goto bad;
+    result = PyObject_Call(method, args, NULL);
+    Py_DECREF(method);
+bad:
+    Py_DECREF(args);
+    return result;
+}
+
+#define __Pyx_PyObject_CallMethod3(obj, name, arg1, arg2, arg3) \
+    __Pyx_PyObject_CallMethodTuple(obj, name, PyTuple_Pack(3, arg1, arg2, arg3));
+#define __Pyx_PyObject_CallMethod2(obj, name, arg1, arg2) \
+    __Pyx_PyObject_CallMethodTuple(obj, name, PyTuple_Pack(2, arg1, arg2));
+#define __Pyx_PyObject_CallMethod1(obj, name, arg1) \
+    __Pyx_PyObject_CallMethodTuple(obj, name, PyTuple_Pack(1, arg1));
+#define __Pyx_PyObject_CallMethod0(obj, name) \
+    __Pyx_PyObject_CallMethodTuple(obj, name, (Py_INCREF($empty_tuple), $empty_tuple));

Cython/Utility/Optimize.c

@@ -4,6 +4,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_Append(PyObject* L, PyObject* x);
 
 /////////////// append ///////////////
 //@requires: ListAppend
+//@requires: ObjectHandling.c::PyObjectCallMethod
 
 static CYTHON_INLINE PyObject* __Pyx_PyObject_Append(PyObject* L, PyObject* x) {
     if (likely(PyList_CheckExact(L))) {
@@ -11,7 +12,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_Append(PyObject* L, PyObject* x) {
         Py_INCREF(Py_None);
         return Py_None; /* this is just to have an accurate signature */
     } else {
-        return PyObject_CallMethodObjArgs(L, PYIDENT("append"), x, NULL);
+        return __Pyx_PyObject_CallMethod1(L, PYIDENT("append"), x);
     }
 }
 
@@ -56,6 +57,7 @@ static CYTHON_INLINE int __Pyx_ListComp_Append(PyObject* list, PyObject* x) {
 static CYTHON_INLINE PyObject* __Pyx_PyObject_Pop(PyObject* L); /*proto*/
 
 /////////////// pop ///////////////
+//@requires: ObjectHandling.c::PyObjectCallMethod
 
 static CYTHON_INLINE PyObject* __Pyx_PyObject_Pop(PyObject* L) {
 #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x02040000
@@ -71,7 +73,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_Pop(PyObject* L) {
     }
 #endif
 #endif
-    return PyObject_CallMethodObjArgs(L, PYIDENT("pop"), NULL);
+    return __Pyx_PyObject_CallMethod0(L, PYIDENT("pop"));
 }
 
 
@@ -318,6 +320,7 @@ static PyObject* __Pyx_PyDict_GetItemDefault(PyObject* d, PyObject* key, PyObjec
 static CYTHON_INLINE PyObject *__Pyx_PyDict_SetDefault(PyObject *d, PyObject *key, PyObject *default_value, int is_safe_type); /*proto*/
 
 /////////////// dict_setdefault ///////////////
+//@requires: ObjectHandling.c::PyObjectCallMethod
 
 static CYTHON_INLINE PyObject *__Pyx_PyDict_SetDefault(PyObject *d, PyObject *key, PyObject *default_value, int is_safe_type) {
     PyObject* value;
@@ -344,7 +347,7 @@ static CYTHON_INLINE PyObject *__Pyx_PyDict_SetDefault(PyObject *d, PyObject *ke
         Py_INCREF(value);
 #endif
     } else {
-        value = PyObject_CallMethodObjArgs(d, PYIDENT("setdefault"), key, default_value, NULL);
+        value = __Pyx_PyObject_CallMethod2(d, PYIDENT("setdefault"), key, default_value);
     }
     return value;
 }
@@ -412,6 +415,7 @@ static CYTHON_INLINE int __Pyx_dict_iter_next(PyObject* dict_or_iter, Py_ssize_t
 /////////////// dict_iter ///////////////
 //@requires: ObjectHandling.c::UnpackTuple2
 //@requires: ObjectHandling.c::IterFinish
+//@requires: ObjectHandling.c::PyObjectCallMethod
 
 static CYTHON_INLINE PyObject* __Pyx_dict_iterator(PyObject* iterable, int is_dict, PyObject* method_name,
                                                    Py_ssize_t* p_orig_length, int* p_source_is_dict) {
@@ -427,7 +431,7 @@ static CYTHON_INLINE PyObject* __Pyx_dict_iterator(PyObject* iterable, int is_di
     *p_orig_length = 0;
     if (method_name) {
         PyObject* iter;
-        iterable = PyObject_CallMethodObjArgs(iterable, method_name, NULL);
+        iterable = __Pyx_PyObject_CallMethod0(iterable, method_name);
         if (!iterable)
             return NULL;
 #if !CYTHON_COMPILING_IN_PYPY