funcobject.c

python s60 1.4.5版本的源代码

		}
		pos = i = 0;
		while (PyDict_Next(kw, &pos, &k[i], &k[i+1]))
			i += 2;
		nk = i/2;
		/* XXX This is broken if the caller deletes dict items! */
	}
	else {
		k = NULL;
		nk = 0;
	}

	result = PyEval_EvalCodeEx(
		(PyCodeObject *)PyFunction_GET_CODE(func),
		PyFunction_GET_GLOBALS(func), (PyObject *)NULL,
		&PyTuple_GET_ITEM(arg, 0), PyTuple_Size(arg),
		k, nk, d, nd,
		PyFunction_GET_CLOSURE(func));

	if (k != NULL)
		PyMem_DEL(k);

	return result;
}

/* Bind a function to an object */
static PyObject *
func_descr_get(PyObject *func, PyObject *obj, PyObject *type)
{
	if (obj == Py_None)
		obj = NULL;
	return PyMethod_New(func, obj, type);
}

#ifndef SYMBIAN
PyTypeObject PyFunction_Type = {
	PyObject_HEAD_INIT(&PyType_Type)
#else
const PyTypeObject c_PyFunction_Type = {
	PyObject_HEAD_INIT(NULL)
#endif
	0,
	"function",
	sizeof(PyFunctionObject),
	0,
	(destructor)func_dealloc,		/* tp_dealloc */
	0,					/* tp_print */
	0,					/* tp_getattr */
	0,					/* tp_setattr */
	0,					/* tp_compare */
	(reprfunc)func_repr,			/* tp_repr */
	0,					/* tp_as_number */
	0,					/* tp_as_sequence */
	0,					/* tp_as_mapping */
	0,					/* tp_hash */
	function_call,				/* tp_call */
	0,					/* tp_str */
	PyObject_GenericGetAttr,		/* tp_getattro */
	PyObject_GenericSetAttr,		/* tp_setattro */
	0,					/* tp_as_buffer */
	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
	0,					/* tp_doc */
	(traverseproc)func_traverse,		/* tp_traverse */
	0,					/* tp_clear */
	0,					/* tp_richcompare */
	offsetof(PyFunctionObject, func_weakreflist), /* tp_weaklistoffset */
	0,					/* tp_iter */
	0,					/* tp_iternext */
	0,					/* tp_methods */
	func_memberlist,			/* tp_members */
	func_getsetlist,			/* tp_getset */
	0,					/* tp_base */
	0,					/* tp_dict */
	func_descr_get,				/* tp_descr_get */
	0,					/* tp_descr_set */
	offsetof(PyFunctionObject, func_dict),	/* tp_dictoffset */
};


/* Class method object */

/* A class method receives the class as implicit first argument,
   just like an instance method receives the instance.
   To declare a class method, use this idiom:

     class C:
         def f(cls, arg1, arg2, ...): ...
	 f = classmethod(f)

   It can be called either on the class (e.g. C.f()) or on an instance
   (e.g. C().f()); the instance is ignored except for its class.
   If a class method is called for a derived class, the derived class
   object is passed as the implied first argument.

   Class methods are different than C++ or Java static methods.
   If you want those, see static methods below.
*/

typedef struct {
	PyObject_HEAD
	PyObject *cm_callable;
} classmethod;

static void
cm_dealloc(classmethod *cm)
{
	Py_XDECREF(cm->cm_callable);
	cm->ob_type->tp_free((PyObject *)cm);
}

static PyObject *
cm_descr_get(PyObject *self, PyObject *obj, PyObject *type)
{
	classmethod *cm = (classmethod *)self;

	if (cm->cm_callable == NULL) {
		PyErr_SetString(PyExc_RuntimeError,
				"uninitialized classmethod object");
		return NULL;
	}
	if (type == NULL)
		type = (PyObject *)(obj->ob_type);
 	return PyMethod_New(cm->cm_callable,
			    type, (PyObject *)(type->ob_type));
}

static int
cm_init(PyObject *self, PyObject *args, PyObject *kwds)
{
	classmethod *cm = (classmethod *)self;
	PyObject *callable;

	if (!PyArg_ParseTuple(args, "O:callable", &callable))
		return -1;
	Py_INCREF(callable);
	cm->cm_callable = callable;
	return 0;
}

const static char classmethod_doc[] =
#ifdef SYMBIAN
"";
#else
"classmethod(function) -> method\n\
\n\
Convert a function to be a class method.\n\
\n\
A class method receives the class as implicit first argument,\n\
just like an instance method receives the instance.\n\
To declare a class method, use this idiom:\n\
\n\
  class C:\n\
      def f(cls, arg1, arg2, ...): ...\n\
      f = classmethod(f)\n\
\n\
It can be called either on the class (e.g. C.f()) or on an instance\n\
(e.g. C().f()).  The instance is ignored except for its class.\n\
If a class method is called for a derived class, the derived class\n\
object is passed as the implied first argument.\n\
\n\
Class methods are different than C++ or Java static methods.\n\
If you want those, see the staticmethod builtin.";
#endif

#ifndef SYMBIAN
PyTypeObject PyClassMethod_Type = {
	PyObject_HEAD_INIT(&PyType_Type)
#else
const PyTypeObject c_PyClassMethod_Type = {
	PyObject_HEAD_INIT(NULL)
#endif
	0,
	"classmethod",
	sizeof(classmethod),
	0,
	(destructor)cm_dealloc,			/* tp_dealloc */
	0,					/* tp_print */
	0,					/* tp_getattr */
	0,					/* tp_setattr */
	0,					/* tp_compare */
	0,					/* tp_repr */
	0,					/* tp_as_number */
	0,					/* tp_as_sequence */
	0,					/* tp_as_mapping */
	0,					/* tp_hash */
	0,					/* tp_call */
	0,					/* tp_str */
	PyObject_GenericGetAttr,		/* tp_getattro */
	0,					/* tp_setattro */
	0,					/* tp_as_buffer */
	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
	classmethod_doc,			/* tp_doc */
	0,					/* tp_traverse */
	0,					/* tp_clear */
	0,					/* tp_richcompare */
	0,					/* tp_weaklistoffset */
	0,					/* tp_iter */
	0,					/* tp_iternext */
	0,					/* tp_methods */
	0,					/* tp_members */
	0,					/* tp_getset */
	0,					/* tp_base */
	0,					/* tp_dict */
	cm_descr_get,				/* tp_descr_get */
	0,					/* tp_descr_set */
	0,					/* tp_dictoffset */
	cm_init,				/* tp_init */
	PyType_GenericAlloc,			/* tp_alloc */
	PyType_GenericNew,			/* tp_new */
	_PyObject_Del,				/* tp_free */
};

DL_EXPORT(PyObject *)
PyClassMethod_New(PyObject *callable)
{
	classmethod *cm = (classmethod *)
		PyType_GenericAlloc(&PyClassMethod_Type, 0);
	if (cm != NULL) {
		Py_INCREF(callable);
		cm->cm_callable = callable;
	}
	return (PyObject *)cm;
}


/* Static method object */

/* A static method does not receive an implicit first argument.
   To declare a static method, use this idiom:

     class C:
         def f(arg1, arg2, ...): ...
	 f = staticmethod(f)

   It can be called either on the class (e.g. C.f()) or on an instance
   (e.g. C().f()); the instance is ignored except for its class.

   Static methods in Python are similar to those found in Java or C++.
   For a more advanced concept, see class methods above.
*/

typedef struct {
	PyObject_HEAD
	PyObject *sm_callable;
} staticmethod;

static void
sm_dealloc(staticmethod *sm)
{
	Py_XDECREF(sm->sm_callable);
	sm->ob_type->tp_free((PyObject *)sm);
}

static PyObject *
sm_descr_get(PyObject *self, PyObject *obj, PyObject *type)
{
	staticmethod *sm = (staticmethod *)self;

	if (sm->sm_callable == NULL) {
		PyErr_SetString(PyExc_RuntimeError,
				"uninitialized staticmethod object");
		return NULL;
	}
	Py_INCREF(sm->sm_callable);
	return sm->sm_callable;
}

static int
sm_init(PyObject *self, PyObject *args, PyObject *kwds)
{
	staticmethod *sm = (staticmethod *)self;
	PyObject *callable;

	if (!PyArg_ParseTuple(args, "O:callable", &callable))
		return -1;
	Py_INCREF(callable);
	sm->sm_callable = callable;
	return 0;
}

const static char staticmethod_doc[] =
#ifdef SYMBIAN
"";
#else
"staticmethod(function) -> method\n\
\n\
Convert a function to be a static method.\n\
\n\
A static method does not receive an implicit first argument.\n\
To declare a static method, use this idiom:\n\
\n\
     class C:\n\
         def f(arg1, arg2, ...): ...\n\
	 f = staticmethod(f)\n\
\n\
It can be called either on the class (e.g. C.f()) or on an instance\n\
(e.g. C().f()).  The instance is ignored except for its class.\n\
\n\
Static methods in Python are similar to those found in Java or C++.\n\
For a more advanced concept, see the classmethod builtin.";
#endif

#ifndef SYMBIAN
PyTypeObject PyStaticMethod_Type = {
	PyObject_HEAD_INIT(&PyType_Type)
#else
const PyTypeObject c_PyStaticMethod_Type = {
	PyObject_HEAD_INIT(NULL)
#endif
	0,
	"staticmethod",
	sizeof(staticmethod),
	0,
	(destructor)sm_dealloc,			/* tp_dealloc */
	0,					/* tp_print */
	0,					/* tp_getattr */
	0,					/* tp_setattr */
	0,					/* tp_compare */
	0,					/* tp_repr */
	0,					/* tp_as_number */
	0,					/* tp_as_sequence */
	0,					/* tp_as_mapping */
	0,					/* tp_hash */
	0,					/* tp_call */
	0,					/* tp_str */
	PyObject_GenericGetAttr,		/* tp_getattro */
	0,					/* tp_setattro */
	0,					/* tp_as_buffer */
	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
	staticmethod_doc,			/* tp_doc */
	0,					/* tp_traverse */
	0,					/* tp_clear */
	0,					/* tp_richcompare */
	0,					/* tp_weaklistoffset */
	0,					/* tp_iter */
	0,					/* tp_iternext */
	0,					/* tp_methods */
	0,					/* tp_members */
	0,					/* tp_getset */
	0,					/* tp_base */
	0,					/* tp_dict */
	sm_descr_get,				/* tp_descr_get */
	0,					/* tp_descr_set */
	0,					/* tp_dictoffset */
	sm_init,				/* tp_init */
	PyType_GenericAlloc,			/* tp_alloc */
	PyType_GenericNew,			/* tp_new */
	_PyObject_Del,				/* tp_free */
};

DL_EXPORT(PyObject *)
PyStaticMethod_New(PyObject *callable)
{
	staticmethod *sm = (staticmethod *)
		PyType_GenericAlloc(&PyStaticMethod_Type, 0);
	if (sm != NULL) {
		Py_INCREF(callable);
		sm->sm_callable = callable;
	}
	return (PyObject *)sm;
}