symbian-qemu-0.9.1-12/python-2.6.1/Objects/funcobject.c
changeset 1 2fb8b9db1c86
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Objects/funcobject.c	Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,892 @@
+
+/* Function object implementation */
+
+#include "Python.h"
+#include "code.h"
+#include "eval.h"
+#include "structmember.h"
+
+PyObject *
+PyFunction_New(PyObject *code, PyObject *globals)
+{
+	PyFunctionObject *op = PyObject_GC_New(PyFunctionObject,
+					    &PyFunction_Type);
+	static PyObject *__name__ = 0;
+	if (op != NULL) {
+		PyObject *doc;
+		PyObject *consts;
+		PyObject *module;
+		op->func_weakreflist = NULL;
+		Py_INCREF(code);
+		op->func_code = code;
+		Py_INCREF(globals);
+		op->func_globals = globals;
+		op->func_name = ((PyCodeObject *)code)->co_name;
+		Py_INCREF(op->func_name);
+		op->func_defaults = NULL; /* No default arguments */
+		op->func_closure = NULL;
+		consts = ((PyCodeObject *)code)->co_consts;
+		if (PyTuple_Size(consts) >= 1) {
+			doc = PyTuple_GetItem(consts, 0);
+			if (!PyString_Check(doc) && !PyUnicode_Check(doc))
+				doc = Py_None;
+		}
+		else
+			doc = Py_None;
+		Py_INCREF(doc);
+		op->func_doc = doc;
+		op->func_dict = NULL;
+		op->func_module = NULL;
+
+		/* __module__: If module name is in globals, use it.
+		   Otherwise, use None.
+		*/
+		if (!__name__) {
+			__name__ = PyString_InternFromString("__name__");
+			if (!__name__) {
+				Py_DECREF(op);
+				return NULL;
+			}
+		}
+		module = PyDict_GetItem(globals, __name__);
+		if (module) {
+		    Py_INCREF(module);
+		    op->func_module = module;
+		}
+	}
+	else
+		return NULL;
+	_PyObject_GC_TRACK(op);
+	return (PyObject *)op;
+}
+
+PyObject *
+PyFunction_GetCode(PyObject *op)
+{
+	if (!PyFunction_Check(op)) {
+		PyErr_BadInternalCall();
+		return NULL;
+	}
+	return ((PyFunctionObject *) op) -> func_code;
+}
+
+PyObject *
+PyFunction_GetGlobals(PyObject *op)
+{
+	if (!PyFunction_Check(op)) {
+		PyErr_BadInternalCall();
+		return NULL;
+	}
+	return ((PyFunctionObject *) op) -> func_globals;
+}
+
+PyObject *
+PyFunction_GetModule(PyObject *op)
+{
+	if (!PyFunction_Check(op)) {
+		PyErr_BadInternalCall();
+		return NULL;
+	}
+	return ((PyFunctionObject *) op) -> func_module;
+}
+
+PyObject *
+PyFunction_GetDefaults(PyObject *op)
+{
+	if (!PyFunction_Check(op)) {
+		PyErr_BadInternalCall();
+		return NULL;
+	}
+	return ((PyFunctionObject *) op) -> func_defaults;
+}
+
+int
+PyFunction_SetDefaults(PyObject *op, PyObject *defaults)
+{
+	if (!PyFunction_Check(op)) {
+		PyErr_BadInternalCall();
+		return -1;
+	}
+	if (defaults == Py_None)
+		defaults = NULL;
+	else if (defaults && PyTuple_Check(defaults)) {
+		Py_INCREF(defaults);
+	}
+	else {
+		PyErr_SetString(PyExc_SystemError, "non-tuple default args");
+		return -1;
+	}
+	Py_XDECREF(((PyFunctionObject *) op) -> func_defaults);
+	((PyFunctionObject *) op) -> func_defaults = defaults;
+	return 0;
+}
+
+PyObject *
+PyFunction_GetClosure(PyObject *op)
+{
+	if (!PyFunction_Check(op)) {
+		PyErr_BadInternalCall();
+		return NULL;
+	}
+	return ((PyFunctionObject *) op) -> func_closure;
+}
+
+int
+PyFunction_SetClosure(PyObject *op, PyObject *closure)
+{
+	if (!PyFunction_Check(op)) {
+		PyErr_BadInternalCall();
+		return -1;
+	}
+	if (closure == Py_None)
+		closure = NULL;
+	else if (PyTuple_Check(closure)) {
+		Py_INCREF(closure);
+	}
+	else {
+		PyErr_Format(PyExc_SystemError, 
+			     "expected tuple for closure, got '%.100s'",
+			     closure->ob_type->tp_name);
+		return -1;
+	}
+	Py_XDECREF(((PyFunctionObject *) op) -> func_closure);
+	((PyFunctionObject *) op) -> func_closure = closure;
+	return 0;
+}
+
+/* Methods */
+
+#define OFF(x) offsetof(PyFunctionObject, x)
+
+static PyMemberDef func_memberlist[] = {
+        {"func_closure",  T_OBJECT,     OFF(func_closure),
+	 RESTRICTED|READONLY},
+        {"__closure__",  T_OBJECT,      OFF(func_closure),
+	 RESTRICTED|READONLY},
+        {"func_doc",      T_OBJECT,     OFF(func_doc), PY_WRITE_RESTRICTED},
+        {"__doc__",       T_OBJECT,     OFF(func_doc), PY_WRITE_RESTRICTED},
+        {"func_globals",  T_OBJECT,     OFF(func_globals),
+	 RESTRICTED|READONLY},
+        {"__globals__",  T_OBJECT,      OFF(func_globals),
+	 RESTRICTED|READONLY},
+        {"__module__",    T_OBJECT,     OFF(func_module), PY_WRITE_RESTRICTED},
+        {NULL}  /* Sentinel */
+};
+
+static int
+restricted(void)
+{
+	if (!PyEval_GetRestricted())
+		return 0;
+	PyErr_SetString(PyExc_RuntimeError,
+		"function attributes not accessible in restricted mode");
+	return 1;
+}
+
+static PyObject *
+func_get_dict(PyFunctionObject *op)
+{
+	if (restricted())
+		return NULL;
+	if (op->func_dict == NULL) {
+		op->func_dict = PyDict_New();
+		if (op->func_dict == NULL)
+			return NULL;
+	}
+	Py_INCREF(op->func_dict);
+	return op->func_dict;
+}
+
+static int
+func_set_dict(PyFunctionObject *op, PyObject *value)
+{
+	PyObject *tmp;
+
+	if (restricted())
+		return -1;
+	/* It is illegal to del f.func_dict */
+	if (value == NULL) {
+		PyErr_SetString(PyExc_TypeError,
+				"function's dictionary may not be deleted");
+		return -1;
+	}
+	/* Can only set func_dict to a dictionary */
+	if (!PyDict_Check(value)) {
+		PyErr_SetString(PyExc_TypeError,
+				"setting function's dictionary to a non-dict");
+		return -1;
+	}
+	tmp = op->func_dict;
+	Py_INCREF(value);
+	op->func_dict = value;
+	Py_XDECREF(tmp);
+	return 0;
+}
+
+static PyObject *
+func_get_code(PyFunctionObject *op)
+{
+	if (restricted())
+		return NULL;
+	Py_INCREF(op->func_code);
+	return op->func_code;
+}
+
+static int
+func_set_code(PyFunctionObject *op, PyObject *value)
+{
+	PyObject *tmp;
+	Py_ssize_t nfree, nclosure;
+
+	if (restricted())
+		return -1;
+	/* Not legal to del f.func_code or to set it to anything
+	 * other than a code object. */
+	if (value == NULL || !PyCode_Check(value)) {
+		PyErr_SetString(PyExc_TypeError,
+				"__code__ must be set to a code object");
+		return -1;
+	}
+	nfree = PyCode_GetNumFree((PyCodeObject *)value);
+	nclosure = (op->func_closure == NULL ? 0 :
+		    PyTuple_GET_SIZE(op->func_closure));
+	if (nclosure != nfree) {
+		PyErr_Format(PyExc_ValueError,
+			     "%s() requires a code object with %zd free vars,"
+			     " not %zd",
+			     PyString_AsString(op->func_name),
+			     nclosure, nfree);
+		return -1;
+	}
+	tmp = op->func_code;
+	Py_INCREF(value);
+	op->func_code = value;
+	Py_DECREF(tmp);
+	return 0;
+}
+
+static PyObject *
+func_get_name(PyFunctionObject *op)
+{
+	Py_INCREF(op->func_name);
+	return op->func_name;
+}
+
+static int
+func_set_name(PyFunctionObject *op, PyObject *value)
+{
+	PyObject *tmp;
+
+	if (restricted())
+		return -1;
+	/* Not legal to del f.func_name or to set it to anything
+	 * other than a string object. */
+	if (value == NULL || !PyString_Check(value)) {
+		PyErr_SetString(PyExc_TypeError,
+				"__name__ must be set to a string object");
+		return -1;
+	}
+	tmp = op->func_name;
+	Py_INCREF(value);
+	op->func_name = value;
+	Py_DECREF(tmp);
+	return 0;
+}
+
+static PyObject *
+func_get_defaults(PyFunctionObject *op)
+{
+	if (restricted())
+		return NULL;
+	if (op->func_defaults == NULL) {
+		Py_INCREF(Py_None);
+		return Py_None;
+	}
+	Py_INCREF(op->func_defaults);
+	return op->func_defaults;
+}
+
+static int
+func_set_defaults(PyFunctionObject *op, PyObject *value)
+{
+	PyObject *tmp;
+
+	if (restricted())
+		return -1;
+	/* Legal to del f.func_defaults.
+	 * Can only set func_defaults to NULL or a tuple. */
+	if (value == Py_None)
+		value = NULL;
+	if (value != NULL && !PyTuple_Check(value)) {
+		PyErr_SetString(PyExc_TypeError,
+				"__defaults__ must be set to a tuple object");
+		return -1;
+	}
+	tmp = op->func_defaults;
+	Py_XINCREF(value);
+	op->func_defaults = value;
+	Py_XDECREF(tmp);
+	return 0;
+}
+
+static PyGetSetDef func_getsetlist[] = {
+        {"func_code", (getter)func_get_code, (setter)func_set_code},
+        {"__code__", (getter)func_get_code, (setter)func_set_code},
+        {"func_defaults", (getter)func_get_defaults,
+	 (setter)func_set_defaults},
+        {"__defaults__", (getter)func_get_defaults,
+	 (setter)func_set_defaults},
+	{"func_dict", (getter)func_get_dict, (setter)func_set_dict},
+	{"__dict__", (getter)func_get_dict, (setter)func_set_dict},
+	{"func_name", (getter)func_get_name, (setter)func_set_name},
+	{"__name__", (getter)func_get_name, (setter)func_set_name},
+	{NULL} /* Sentinel */
+};
+
+PyDoc_STRVAR(func_doc,
+"function(code, globals[, name[, argdefs[, closure]]])\n\
+\n\
+Create a function object from a code object and a dictionary.\n\
+The optional name string overrides the name from the code object.\n\
+The optional argdefs tuple specifies the default argument values.\n\
+The optional closure tuple supplies the bindings for free variables.");
+
+/* func_new() maintains the following invariants for closures.  The
+   closure must correspond to the free variables of the code object.
+   
+   if len(code.co_freevars) == 0: 
+           closure = NULL
+   else:
+           len(closure) == len(code.co_freevars)
+   for every elt in closure, type(elt) == cell
+*/
+
+static PyObject *
+func_new(PyTypeObject* type, PyObject* args, PyObject* kw)
+{
+	PyCodeObject *code;
+	PyObject *globals;
+	PyObject *name = Py_None;
+	PyObject *defaults = Py_None;
+	PyObject *closure = Py_None;
+	PyFunctionObject *newfunc;
+	Py_ssize_t nfree, nclosure;
+	static char *kwlist[] = {"code", "globals", "name",
+				 "argdefs", "closure", 0};
+
+	if (!PyArg_ParseTupleAndKeywords(args, kw, "O!O!|OOO:function",
+			      kwlist,
+			      &PyCode_Type, &code,
+			      &PyDict_Type, &globals,
+			      &name, &defaults, &closure))
+		return NULL;
+	if (name != Py_None && !PyString_Check(name)) {
+		PyErr_SetString(PyExc_TypeError,
+				"arg 3 (name) must be None or string");
+		return NULL;
+	}
+	if (defaults != Py_None && !PyTuple_Check(defaults)) {
+		PyErr_SetString(PyExc_TypeError,
+				"arg 4 (defaults) must be None or tuple");
+		return NULL;
+	}
+	nfree = PyTuple_GET_SIZE(code->co_freevars);
+	if (!PyTuple_Check(closure)) {
+		if (nfree && closure == Py_None) {
+			PyErr_SetString(PyExc_TypeError,
+					"arg 5 (closure) must be tuple");
+			return NULL;
+		}
+		else if (closure != Py_None) {
+			PyErr_SetString(PyExc_TypeError,
+				"arg 5 (closure) must be None or tuple");
+			return NULL;
+		}
+	}
+
+	/* check that the closure is well-formed */
+	nclosure = closure == Py_None ? 0 : PyTuple_GET_SIZE(closure);
+	if (nfree != nclosure)
+		return PyErr_Format(PyExc_ValueError,
+				    "%s requires closure of length %zd, not %zd",
+				    PyString_AS_STRING(code->co_name),
+				    nfree, nclosure);
+	if (nclosure) {
+		Py_ssize_t i;
+		for (i = 0; i < nclosure; i++) {
+			PyObject *o = PyTuple_GET_ITEM(closure, i);
+			if (!PyCell_Check(o)) {
+				return PyErr_Format(PyExc_TypeError,
+				    "arg 5 (closure) expected cell, found %s",
+						    o->ob_type->tp_name);
+			}
+		}
+	}
+	
+	newfunc = (PyFunctionObject *)PyFunction_New((PyObject *)code, 
+						     globals);
+	if (newfunc == NULL)
+		return NULL;
+	
+	if (name != Py_None) {
+		Py_INCREF(name);
+		Py_DECREF(newfunc->func_name);
+		newfunc->func_name = name;
+	}
+	if (defaults != Py_None) {
+		Py_INCREF(defaults);
+		newfunc->func_defaults  = defaults;
+	}
+	if (closure != Py_None) {
+		Py_INCREF(closure);
+		newfunc->func_closure = closure;
+	}
+
+	return (PyObject *)newfunc;
+}
+
+static void
+func_dealloc(PyFunctionObject *op)
+{
+	_PyObject_GC_UNTRACK(op);
+	if (op->func_weakreflist != NULL)
+		PyObject_ClearWeakRefs((PyObject *) op);
+	Py_DECREF(op->func_code);
+	Py_DECREF(op->func_globals);
+	Py_XDECREF(op->func_module);
+	Py_DECREF(op->func_name);
+	Py_XDECREF(op->func_defaults);
+	Py_XDECREF(op->func_doc);
+	Py_XDECREF(op->func_dict);
+	Py_XDECREF(op->func_closure);
+	PyObject_GC_Del(op);
+}
+
+static PyObject*
+func_repr(PyFunctionObject *op)
+{
+	return PyString_FromFormat("<function %s at %p>",
+				   PyString_AsString(op->func_name),
+				   op);
+}
+
+static int
+func_traverse(PyFunctionObject *f, visitproc visit, void *arg)
+{
+	Py_VISIT(f->func_code);
+	Py_VISIT(f->func_globals);
+	Py_VISIT(f->func_module);
+	Py_VISIT(f->func_defaults);
+	Py_VISIT(f->func_doc);
+	Py_VISIT(f->func_name);
+	Py_VISIT(f->func_dict);
+	Py_VISIT(f->func_closure);
+	return 0;
+}
+
+static PyObject *
+function_call(PyObject *func, PyObject *arg, PyObject *kw)
+{
+	PyObject *result;
+	PyObject *argdefs;
+	PyObject **d, **k;
+	Py_ssize_t nk, nd;
+
+	argdefs = PyFunction_GET_DEFAULTS(func);
+	if (argdefs != NULL && PyTuple_Check(argdefs)) {
+		d = &PyTuple_GET_ITEM((PyTupleObject *)argdefs, 0);
+		nd = PyTuple_Size(argdefs);
+	}
+	else {
+		d = NULL;
+		nd = 0;
+	}
+
+	if (kw != NULL && PyDict_Check(kw)) {
+		Py_ssize_t pos, i;
+		nk = PyDict_Size(kw);
+		k = PyMem_NEW(PyObject *, 2*nk);
+		if (k == NULL) {
+			PyErr_NoMemory();
+			return NULL;
+		}
+		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);
+}
+
+PyTypeObject PyFunction_Type = {
+	PyVarObject_HEAD_INIT(&PyType_Type, 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 */
+	func_doc,				/* 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 */
+	0,					/* tp_init */
+	0,					/* tp_alloc */
+	func_new,				/* tp_new */
+};
+
+
+/* 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)
+{
+	_PyObject_GC_UNTRACK((PyObject *)cm);
+	Py_XDECREF(cm->cm_callable);
+	Py_TYPE(cm)->tp_free((PyObject *)cm);
+}
+
+static int
+cm_traverse(classmethod *cm, visitproc visit, void *arg)
+{
+	Py_VISIT(cm->cm_callable);
+	return 0;
+}
+
+static int
+cm_clear(classmethod *cm)
+{
+	Py_CLEAR(cm->cm_callable);
+	return 0;
+}
+
+
+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 *)(Py_TYPE(obj));
+ 	return PyMethod_New(cm->cm_callable,
+			    type, (PyObject *)(Py_TYPE(type)));
+}
+
+static int
+cm_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+	classmethod *cm = (classmethod *)self;
+	PyObject *callable;
+
+	if (!PyArg_UnpackTuple(args, "classmethod", 1, 1, &callable))
+		return -1;
+	if (!_PyArg_NoKeywords("classmethod", kwds))
+		return -1;
+	if (!PyCallable_Check(callable)) {
+		PyErr_Format(PyExc_TypeError, "'%s' object is not callable",
+		     callable->ob_type->tp_name);
+		return -1;
+	}
+	
+	Py_INCREF(callable);
+	cm->cm_callable = callable;
+	return 0;
+}
+
+PyDoc_STRVAR(classmethod_doc,
+"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.");
+
+PyTypeObject PyClassMethod_Type = {
+	PyVarObject_HEAD_INIT(&PyType_Type, 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 | Py_TPFLAGS_HAVE_GC,
+	classmethod_doc,			/* tp_doc */
+	(traverseproc)cm_traverse,		/* tp_traverse */
+	(inquiry)cm_clear,			/* 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_GC_Del,	                /* tp_free */
+};
+
+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)
+{
+	_PyObject_GC_UNTRACK((PyObject *)sm);
+	Py_XDECREF(sm->sm_callable);
+	Py_TYPE(sm)->tp_free((PyObject *)sm);
+}
+
+static int
+sm_traverse(staticmethod *sm, visitproc visit, void *arg)
+{
+	Py_VISIT(sm->sm_callable);
+	return 0;
+}
+
+static int
+sm_clear(staticmethod *sm)
+{
+	Py_XDECREF(sm->sm_callable);
+	sm->sm_callable = NULL;
+
+	return 0;
+}
+
+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_UnpackTuple(args, "staticmethod", 1, 1, &callable))
+		return -1;
+	if (!_PyArg_NoKeywords("staticmethod", kwds))
+		return -1;
+	Py_INCREF(callable);
+	sm->sm_callable = callable;
+	return 0;
+}
+
+PyDoc_STRVAR(staticmethod_doc,
+"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.");
+
+PyTypeObject PyStaticMethod_Type = {
+	PyVarObject_HEAD_INIT(&PyType_Type, 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 | Py_TPFLAGS_HAVE_GC,
+	staticmethod_doc,			/* tp_doc */
+	(traverseproc)sm_traverse,		/* tp_traverse */
+	(inquiry)sm_clear,			/* 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_GC_Del,           		/* tp_free */
+};
+
+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;
+}