python, hg: tow outside the environment.

they've served us well, and can ride off into the sunset.

1 files changed, 0 insertions, 2139 deletions

diff --git a/sys/src/cmd/python/Objects/object.c b/sys/src/cmd/python/Objects/object.c
deleted file mode 100644
index b0672f30e..000000000
--- a/sys/src/cmd/python/Objects/object.c
+++ /dev/null
@@ -1,2139 +0,0 @@
-
-/* Generic object operations; and implementation of None (NoObject) */
-
-#include "Python.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef Py_REF_DEBUG
-Py_ssize_t _Py_RefTotal;
-
-Py_ssize_t
-_Py_GetRefTotal(void)
-{
-	PyObject *o;
-	Py_ssize_t total = _Py_RefTotal;
-        /* ignore the references to the dummy object of the dicts and sets
-           because they are not reliable and not useful (now that the
-           hash table code is well-tested) */
-	o = _PyDict_Dummy();
-	if (o != NULL)
-		total -= o->ob_refcnt;
-	o = _PySet_Dummy();
-	if (o != NULL)
-		total -= o->ob_refcnt;
-	return total;
-}
-#endif /* Py_REF_DEBUG */
-
-int Py_DivisionWarningFlag;
-
-/* Object allocation routines used by NEWOBJ and NEWVAROBJ macros.
-   These are used by the individual routines for object creation.
-   Do not call them otherwise, they do not initialize the object! */
-
-#ifdef Py_TRACE_REFS
-/* Head of circular doubly-linked list of all objects.  These are linked
- * together via the _ob_prev and _ob_next members of a PyObject, which
- * exist only in a Py_TRACE_REFS build.
- */
-static PyObject refchain = {&refchain, &refchain};
-
-/* Insert op at the front of the list of all objects.  If force is true,
- * op is added even if _ob_prev and _ob_next are non-NULL already.  If
- * force is false amd _ob_prev or _ob_next are non-NULL, do nothing.
- * force should be true if and only if op points to freshly allocated,
- * uninitialized memory, or you've unlinked op from the list and are
- * relinking it into the front.
- * Note that objects are normally added to the list via _Py_NewReference,
- * which is called by PyObject_Init.  Not all objects are initialized that
- * way, though; exceptions include statically allocated type objects, and
- * statically allocated singletons (like Py_True and Py_None).
- */
-void
-_Py_AddToAllObjects(PyObject *op, int force)
-{
-#ifdef  Py_DEBUG
-	if (!force) {
-		/* If it's initialized memory, op must be in or out of
-		 * the list unambiguously.
-		 */
-		assert((op->_ob_prev == NULL) == (op->_ob_next == NULL));
-	}
-#endif
-	if (force || op->_ob_prev == NULL) {
-		op->_ob_next = refchain._ob_next;
-		op->_ob_prev = &refchain;
-		refchain._ob_next->_ob_prev = op;
-		refchain._ob_next = op;
-	}
-}
-#endif	/* Py_TRACE_REFS */
-
-#ifdef COUNT_ALLOCS
-static PyTypeObject *type_list;
-/* All types are added to type_list, at least when
-   they get one object created. That makes them
-   immortal, which unfortunately contributes to
-   garbage itself. If unlist_types_without_objects
-   is set, they will be removed from the type_list
-   once the last object is deallocated. */
-int unlist_types_without_objects;
-extern int tuple_zero_allocs, fast_tuple_allocs;
-extern int quick_int_allocs, quick_neg_int_allocs;
-extern int null_strings, one_strings;
-void
-dump_counts(FILE* f)
-{
-	PyTypeObject *tp;
-
-	for (tp = type_list; tp; tp = tp->tp_next)
-		fprintf(f, "%s alloc'd: %d, freed: %d, max in use: %d\n",
-			tp->tp_name, tp->tp_allocs, tp->tp_frees,
-			tp->tp_maxalloc);
-	fprintf(f, "fast tuple allocs: %d, empty: %d\n",
-		fast_tuple_allocs, tuple_zero_allocs);
-	fprintf(f, "fast int allocs: pos: %d, neg: %d\n",
-		quick_int_allocs, quick_neg_int_allocs);
-	fprintf(f, "null strings: %d, 1-strings: %d\n",
-		null_strings, one_strings);
-}
-
-PyObject *
-get_counts(void)
-{
-	PyTypeObject *tp;
-	PyObject *result;
-	PyObject *v;
-
-	result = PyList_New(0);
-	if (result == NULL)
-		return NULL;
-	for (tp = type_list; tp; tp = tp->tp_next) {
-		v = Py_BuildValue("(snnn)", tp->tp_name, tp->tp_allocs,
-				  tp->tp_frees, tp->tp_maxalloc);
-		if (v == NULL) {
-			Py_DECREF(result);
-			return NULL;
-		}
-		if (PyList_Append(result, v) < 0) {
-			Py_DECREF(v);
-			Py_DECREF(result);
-			return NULL;
-		}
-		Py_DECREF(v);
-	}
-	return result;
-}
-
-void
-inc_count(PyTypeObject *tp)
-{
-	if (tp->tp_next == NULL && tp->tp_prev == NULL) {
-		/* first time; insert in linked list */
-		if (tp->tp_next != NULL) /* sanity check */
-			Py_FatalError("XXX inc_count sanity check");
-		if (type_list)
-			type_list->tp_prev = tp;
-		tp->tp_next = type_list;
-		/* Note that as of Python 2.2, heap-allocated type objects
-		 * can go away, but this code requires that they stay alive
-		 * until program exit.  That's why we're careful with
-		 * refcounts here.  type_list gets a new reference to tp,
-		 * while ownership of the reference type_list used to hold
-		 * (if any) was transferred to tp->tp_next in the line above.
-		 * tp is thus effectively immortal after this.
-		 */
-		Py_INCREF(tp);
-		type_list = tp;
-#ifdef Py_TRACE_REFS
-		/* Also insert in the doubly-linked list of all objects,
-		 * if not already there.
-		 */
-		_Py_AddToAllObjects((PyObject *)tp, 0);
-#endif
-	}
-	tp->tp_allocs++;
-	if (tp->tp_allocs - tp->tp_frees > tp->tp_maxalloc)
-		tp->tp_maxalloc = tp->tp_allocs - tp->tp_frees;
-}
-
-void dec_count(PyTypeObject *tp)
-{
-	tp->tp_frees++;
-	if (unlist_types_without_objects &&
-	    tp->tp_allocs == tp->tp_frees) {
-		/* unlink the type from type_list */
-		if (tp->tp_prev)
-			tp->tp_prev->tp_next = tp->tp_next;
-		else
-			type_list = tp->tp_next;
-		if (tp->tp_next)
-			tp->tp_next->tp_prev = tp->tp_prev;
-		tp->tp_next = tp->tp_prev = NULL;
-		Py_DECREF(tp);
-	}
-}
-
-#endif
-
-#ifdef Py_REF_DEBUG
-/* Log a fatal error; doesn't return. */
-void
-_Py_NegativeRefcount(const char *fname, int lineno, PyObject *op)
-{
-	char buf[300];
-
-	PyOS_snprintf(buf, sizeof(buf),
-		      "%s:%i object at %p has negative ref count "
-		      "%" PY_FORMAT_SIZE_T "d",
-		      fname, lineno, op, op->ob_refcnt);
-	Py_FatalError(buf);
-}
-
-#endif /* Py_REF_DEBUG */
-
-void
-Py_IncRef(PyObject *o)
-{
-    Py_XINCREF(o);
-}
-
-void
-Py_DecRef(PyObject *o)
-{
-    Py_XDECREF(o);
-}
-
-PyObject *
-PyObject_Init(PyObject *op, PyTypeObject *tp)
-{
-	if (op == NULL)
-		return PyErr_NoMemory();
-	/* Any changes should be reflected in PyObject_INIT (objimpl.h) */
-	op->ob_type = tp;
-	_Py_NewReference(op);
-	return op;
-}
-
-PyVarObject *
-PyObject_InitVar(PyVarObject *op, PyTypeObject *tp, Py_ssize_t size)
-{
-	if (op == NULL)
-		return (PyVarObject *) PyErr_NoMemory();
-	/* Any changes should be reflected in PyObject_INIT_VAR */
-	op->ob_size = size;
-	op->ob_type = tp;
-	_Py_NewReference((PyObject *)op);
-	return op;
-}
-
-PyObject *
-_PyObject_New(PyTypeObject *tp)
-{
-	PyObject *op;
-	op = (PyObject *) PyObject_MALLOC(_PyObject_SIZE(tp));
-	if (op == NULL)
-		return PyErr_NoMemory();
-	return PyObject_INIT(op, tp);
-}
-
-PyVarObject *
-_PyObject_NewVar(PyTypeObject *tp, Py_ssize_t nitems)
-{
-	PyVarObject *op;
-	const size_t size = _PyObject_VAR_SIZE(tp, nitems);
-	op = (PyVarObject *) PyObject_MALLOC(size);
-	if (op == NULL)
-		return (PyVarObject *)PyErr_NoMemory();
-	return PyObject_INIT_VAR(op, tp, nitems);
-}
-
-/* for binary compatibility with 2.2 */
-#undef _PyObject_Del
-void
-_PyObject_Del(PyObject *op)
-{
-	PyObject_FREE(op);
-}
-
-/* Implementation of PyObject_Print with recursion checking */
-static int
-internal_print(PyObject *op, FILE *fp, int flags, int nesting)
-{
-	int ret = 0;
-	if (nesting > 10) {
-		PyErr_SetString(PyExc_RuntimeError, "print recursion");
-		return -1;
-	}
-	if (PyErr_CheckSignals())
-		return -1;
-#ifdef USE_STACKCHECK
-	if (PyOS_CheckStack()) {
-		PyErr_SetString(PyExc_MemoryError, "stack overflow");
-		return -1;
-	}
-#endif
-	clearerr(fp); /* Clear any previous error condition */
-	if (op == NULL) {
-		fprintf(fp, "<nil>");
-	}
-	else {
-		if (op->ob_refcnt <= 0)
-			/* XXX(twouters) cast refcount to long until %zd is
-			   universally available */
-			fprintf(fp, "<refcnt %ld at %p>",
-				(long)op->ob_refcnt, op);
-		else if (op->ob_type->tp_print == NULL) {
-			PyObject *s;
-			if (flags & Py_PRINT_RAW)
-				s = PyObject_Str(op);
-			else
-				s = PyObject_Repr(op);
-			if (s == NULL)
-				ret = -1;
-			else {
-				ret = internal_print(s, fp, Py_PRINT_RAW,
-						     nesting+1);
-			}
-			Py_XDECREF(s);
-		}
-		else
-			ret = (*op->ob_type->tp_print)(op, fp, flags);
-	}
-	if (ret == 0) {
-		if (ferror(fp)) {
-			PyErr_SetFromErrno(PyExc_IOError);
-			clearerr(fp);
-			ret = -1;
-		}
-	}
-	return ret;
-}
-
-int
-PyObject_Print(PyObject *op, FILE *fp, int flags)
-{
-	return internal_print(op, fp, flags, 0);
-}
-
-
-/* For debugging convenience.  See Misc/gdbinit for some useful gdb hooks */
-void _PyObject_Dump(PyObject* op)
-{
-	if (op == NULL)
-		fprintf(stderr, "NULL\n");
-	else {
-		fprintf(stderr, "object  : ");
-		(void)PyObject_Print(op, stderr, 0);
-		/* XXX(twouters) cast refcount to long until %zd is
-		   universally available */
-		fprintf(stderr, "\n"
-			"type    : %s\n"
-			"refcount: %ld\n"
-			"address : %p\n",
-			op->ob_type==NULL ? "NULL" : op->ob_type->tp_name,
-			(long)op->ob_refcnt,
-			op);
-	}
-}
-
-PyObject *
-PyObject_Repr(PyObject *v)
-{
-	if (PyErr_CheckSignals())
-		return NULL;
-#ifdef USE_STACKCHECK
-	if (PyOS_CheckStack()) {
-		PyErr_SetString(PyExc_MemoryError, "stack overflow");
-		return NULL;
-	}
-#endif
-	if (v == NULL)
-		return PyString_FromString("<NULL>");
-	else if (v->ob_type->tp_repr == NULL)
-		return PyString_FromFormat("<%s object at %p>",
-					   v->ob_type->tp_name, v);
-	else {
-		PyObject *res;
-		res = (*v->ob_type->tp_repr)(v);
-		if (res == NULL)
-			return NULL;
-#ifdef Py_USING_UNICODE
-		if (PyUnicode_Check(res)) {
-			PyObject* str;
-			str = PyUnicode_AsEncodedString(res, NULL, NULL);
-			Py_DECREF(res);
-			if (str)
-				res = str;
-			else
-				return NULL;
-		}
-#endif
-		if (!PyString_Check(res)) {
-			PyErr_Format(PyExc_TypeError,
-				     "__repr__ returned non-string (type %.200s)",
-				     res->ob_type->tp_name);
-			Py_DECREF(res);
-			return NULL;
-		}
-		return res;
-	}
-}
-
-PyObject *
-_PyObject_Str(PyObject *v)
-{
-	PyObject *res;
-	int type_ok;
-	if (v == NULL)
-		return PyString_FromString("<NULL>");
-	if (PyString_CheckExact(v)) {
-		Py_INCREF(v);
-		return v;
-	}
-#ifdef Py_USING_UNICODE
-	if (PyUnicode_CheckExact(v)) {
-		Py_INCREF(v);
-		return v;
-	}
-#endif
-	if (v->ob_type->tp_str == NULL)
-		return PyObject_Repr(v);
-
-	res = (*v->ob_type->tp_str)(v);
-	if (res == NULL)
-		return NULL;
-	type_ok = PyString_Check(res);
-#ifdef Py_USING_UNICODE
-	type_ok = type_ok || PyUnicode_Check(res);
-#endif
-	if (!type_ok) {
-		PyErr_Format(PyExc_TypeError,
-			     "__str__ returned non-string (type %.200s)",
-			     res->ob_type->tp_name);
-		Py_DECREF(res);
-		return NULL;
-	}
-	return res;
-}
-
-PyObject *
-PyObject_Str(PyObject *v)
-{
-	PyObject *res = _PyObject_Str(v);
-	if (res == NULL)
-		return NULL;
-#ifdef Py_USING_UNICODE
-	if (PyUnicode_Check(res)) {
-		PyObject* str;
-		str = PyUnicode_AsEncodedString(res, NULL, NULL);
-		Py_DECREF(res);
-		if (str)
-			res = str;
-		else
-		    	return NULL;
-	}
-#endif
-	assert(PyString_Check(res));
-	return res;
-}
-
-#ifdef Py_USING_UNICODE
-PyObject *
-PyObject_Unicode(PyObject *v)
-{
-	PyObject *res;
-	PyObject *func;
-	PyObject *str;
-	static PyObject *unicodestr;
-
-	if (v == NULL) {
-		res = PyString_FromString("<NULL>");
-		if (res == NULL)
-			return NULL;
-		str = PyUnicode_FromEncodedObject(res, NULL, "strict");
-		Py_DECREF(res);
-		return str;
-	} else if (PyUnicode_CheckExact(v)) {
-		Py_INCREF(v);
-		return v;
-	}
-	/* XXX As soon as we have a tp_unicode slot, we should
-	   check this before trying the __unicode__
-	   method. */
-	if (unicodestr == NULL) {
-		unicodestr= PyString_InternFromString("__unicode__");
-		if (unicodestr == NULL)
-			return NULL;
-	}
-	func = PyObject_GetAttr(v, unicodestr);
-	if (func != NULL) {
-		res = PyEval_CallObject(func, (PyObject *)NULL);
-		Py_DECREF(func);
-	}
-	else {
-		PyErr_Clear();
-		if (PyUnicode_Check(v)) {
-			/* For a Unicode subtype that's didn't overwrite __unicode__,
-			   return a true Unicode object with the same data. */
-			return PyUnicode_FromUnicode(PyUnicode_AS_UNICODE(v),
-			                             PyUnicode_GET_SIZE(v));
-		}
-		if (PyString_CheckExact(v)) {
-			Py_INCREF(v);
-			res = v;
-		}
-		else {
-			if (v->ob_type->tp_str != NULL)
-				res = (*v->ob_type->tp_str)(v);
-			else
-				res = PyObject_Repr(v);
-		}
-	}
-	if (res == NULL)
-		return NULL;
-	if (!PyUnicode_Check(res)) {
-		str = PyUnicode_FromEncodedObject(res, NULL, "strict");
-		Py_DECREF(res);
-		res = str;
-	}
-	return res;
-}
-#endif
-
-
-/* Helper to warn about deprecated tp_compare return values.  Return:
-   -2 for an exception;
-   -1 if v <  w;
-    0 if v == w;
-    1 if v  > w.
-   (This function cannot return 2.)
-*/
-static int
-adjust_tp_compare(int c)
-{
-	if (PyErr_Occurred()) {
-		if (c != -1 && c != -2) {
-			PyObject *t, *v, *tb;
-			PyErr_Fetch(&t, &v, &tb);
-			if (PyErr_Warn(PyExc_RuntimeWarning,
-				       "tp_compare didn't return -1 or -2 "
-				       "for exception") < 0) {
-				Py_XDECREF(t);
-				Py_XDECREF(v);
-				Py_XDECREF(tb);
-			}
-			else
-				PyErr_Restore(t, v, tb);
-		}
-		return -2;
-	}
-	else if (c < -1 || c > 1) {
-		if (PyErr_Warn(PyExc_RuntimeWarning,
-			       "tp_compare didn't return -1, 0 or 1") < 0)
-			return -2;
-		else
-			return c < -1 ? -1 : 1;
-	}
-	else {
-		assert(c >= -1 && c <= 1);
-		return c;
-	}
-}
-
-
-/* Macro to get the tp_richcompare field of a type if defined */
-#define RICHCOMPARE(t) (PyType_HasFeature((t), Py_TPFLAGS_HAVE_RICHCOMPARE) \
-                         ? (t)->tp_richcompare : NULL)
-
-/* Map rich comparison operators to their swapped version, e.g. LT --> GT */
-int _Py_SwappedOp[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE};
-
-/* Try a genuine rich comparison, returning an object.  Return:
-   NULL for exception;
-   NotImplemented if this particular rich comparison is not implemented or
-     undefined;
-   some object not equal to NotImplemented if it is implemented
-     (this latter object may not be a Boolean).
-*/
-static PyObject *
-try_rich_compare(PyObject *v, PyObject *w, int op)
-{
-	richcmpfunc f;
-	PyObject *res;
-
-	if (v->ob_type != w->ob_type &&
-	    PyType_IsSubtype(w->ob_type, v->ob_type) &&
-	    (f = RICHCOMPARE(w->ob_type)) != NULL) {
-		res = (*f)(w, v, _Py_SwappedOp[op]);
-		if (res != Py_NotImplemented)
-			return res;
-		Py_DECREF(res);
-	}
-	if ((f = RICHCOMPARE(v->ob_type)) != NULL) {
-		res = (*f)(v, w, op);
-		if (res != Py_NotImplemented)
-			return res;
-		Py_DECREF(res);
-	}
-	if ((f = RICHCOMPARE(w->ob_type)) != NULL) {
-		return (*f)(w, v, _Py_SwappedOp[op]);
-	}
-	res = Py_NotImplemented;
-	Py_INCREF(res);
-	return res;
-}
-
-/* Try a genuine rich comparison, returning an int.  Return:
-   -1 for exception (including the case where try_rich_compare() returns an
-      object that's not a Boolean);
-    0 if the outcome is false;
-    1 if the outcome is true;
-    2 if this particular rich comparison is not implemented or undefined.
-*/
-static int
-try_rich_compare_bool(PyObject *v, PyObject *w, int op)
-{
-	PyObject *res;
-	int ok;
-
-	if (RICHCOMPARE(v->ob_type) == NULL && RICHCOMPARE(w->ob_type) == NULL)
-		return 2; /* Shortcut, avoid INCREF+DECREF */
-	res = try_rich_compare(v, w, op);
-	if (res == NULL)
-		return -1;
-	if (res == Py_NotImplemented) {
-		Py_DECREF(res);
-		return 2;
-	}
-	ok = PyObject_IsTrue(res);
-	Py_DECREF(res);
-	return ok;
-}
-
-/* Try rich comparisons to determine a 3-way comparison.  Return:
-   -2 for an exception;
-   -1 if v  < w;
-    0 if v == w;
-    1 if v  > w;
-    2 if this particular rich comparison is not implemented or undefined.
-*/
-static int
-try_rich_to_3way_compare(PyObject *v, PyObject *w)
-{
-	static struct { int op; int outcome; } tries[3] = {
-		/* Try this operator, and if it is true, use this outcome: */
-		{Py_EQ, 0},
-		{Py_LT, -1},
-		{Py_GT, 1},
-	};
-	int i;
-
-	if (RICHCOMPARE(v->ob_type) == NULL && RICHCOMPARE(w->ob_type) == NULL)
-		return 2; /* Shortcut */
-
-	for (i = 0; i < 3; i++) {
-		switch (try_rich_compare_bool(v, w, tries[i].op)) {
-		case -1:
-			return -2;
-		case 1:
-			return tries[i].outcome;
-		}
-	}
-
-	return 2;
-}
-
-/* Try a 3-way comparison, returning an int.  Return:
-   -2 for an exception;
-   -1 if v <  w;
-    0 if v == w;
-    1 if v  > w;
-    2 if this particular 3-way comparison is not implemented or undefined.
-*/
-static int
-try_3way_compare(PyObject *v, PyObject *w)
-{
-	int c;
-	cmpfunc f;
-
-	/* Comparisons involving instances are given to instance_compare,
-	   which has the same return conventions as this function. */
-
-	f = v->ob_type->tp_compare;
-	if (PyInstance_Check(v))
-		return (*f)(v, w);
-	if (PyInstance_Check(w))
-		return (*w->ob_type->tp_compare)(v, w);
-
-	/* If both have the same (non-NULL) tp_compare, use it. */
-	if (f != NULL && f == w->ob_type->tp_compare) {
-		c = (*f)(v, w);
-		return adjust_tp_compare(c);
-	}
-
-	/* If either tp_compare is _PyObject_SlotCompare, that's safe. */
-	if (f == _PyObject_SlotCompare ||
-	    w->ob_type->tp_compare == _PyObject_SlotCompare)
-		return _PyObject_SlotCompare(v, w);
-
-	/* If we're here, v and w,
-	    a) are not instances;
-	    b) have different types or a type without tp_compare; and
-	    c) don't have a user-defined tp_compare.
-	   tp_compare implementations in C assume that both arguments
-	   have their type, so we give up if the coercion fails or if
-	   it yields types which are still incompatible (which can
-	   happen with a user-defined nb_coerce).
-	*/
-	c = PyNumber_CoerceEx(&v, &w);
-	if (c < 0)
-		return -2;
-	if (c > 0)
-		return 2;
-	f = v->ob_type->tp_compare;
-	if (f != NULL && f == w->ob_type->tp_compare) {
-		c = (*f)(v, w);
-		Py_DECREF(v);
-		Py_DECREF(w);
-		return adjust_tp_compare(c);
-	}
-
-	/* No comparison defined */
-	Py_DECREF(v);
-	Py_DECREF(w);
-	return 2;
-}
-
-/* Final fallback 3-way comparison, returning an int.  Return:
-   -2 if an error occurred;
-   -1 if v <  w;
-    0 if v == w;
-    1 if v >  w.
-*/
-static int
-default_3way_compare(PyObject *v, PyObject *w)
-{
-	int c;
-	const char *vname, *wname;
-
-	if (v->ob_type == w->ob_type) {
-		/* When comparing these pointers, they must be cast to
-		 * integer types (i.e. Py_uintptr_t, our spelling of C9X's
-		 * uintptr_t).  ANSI specifies that pointer compares other
-		 * than == and != to non-related structures are undefined.
-		 */
-		Py_uintptr_t vv = (Py_uintptr_t)v;
-		Py_uintptr_t ww = (Py_uintptr_t)w;
-		return (vv < ww) ? -1 : (vv > ww) ? 1 : 0;
-	}
-
-	/* None is smaller than anything */
-	if (v == Py_None)
-		return -1;
-	if (w == Py_None)
-		return 1;
-
-	/* different type: compare type names; numbers are smaller */
-	if (PyNumber_Check(v))
-		vname = "";
-	else
-		vname = v->ob_type->tp_name;
-	if (PyNumber_Check(w))
-		wname = "";
-	else
-		wname = w->ob_type->tp_name;
-	c = strcmp(vname, wname);
-	if (c < 0)
-		return -1;
-	if (c > 0)
-		return 1;
-	/* Same type name, or (more likely) incomparable numeric types */
-	return ((Py_uintptr_t)(v->ob_type) < (
-		Py_uintptr_t)(w->ob_type)) ? -1 : 1;
-}
-
-/* Do a 3-way comparison, by hook or by crook.  Return:
-   -2 for an exception (but see below);
-   -1 if v <  w;
-    0 if v == w;
-    1 if v >  w;
-   BUT: if the object implements a tp_compare function, it returns
-   whatever this function returns (whether with an exception or not).
-*/
-static int
-do_cmp(PyObject *v, PyObject *w)
-{
-	int c;
-	cmpfunc f;
-
-	if (v->ob_type == w->ob_type
-	    && (f = v->ob_type->tp_compare) != NULL) {
-		c = (*f)(v, w);
-		if (PyInstance_Check(v)) {
-			/* Instance tp_compare has a different signature.
-			   But if it returns undefined we fall through. */
-			if (c != 2)
-				return c;
-			/* Else fall through to try_rich_to_3way_compare() */
-		}
-		else
-			return adjust_tp_compare(c);
-	}
-	/* We only get here if one of the following is true:
-	   a) v and w have different types
-	   b) v and w have the same type, which doesn't have tp_compare
-	   c) v and w are instances, and either __cmp__ is not defined or
-	      __cmp__ returns NotImplemented
-	*/
-	c = try_rich_to_3way_compare(v, w);
-	if (c < 2)
-		return c;
-	c = try_3way_compare(v, w);
-	if (c < 2)
-		return c;
-	return default_3way_compare(v, w);
-}
-
-/* Compare v to w.  Return
-   -1 if v <  w or exception (PyErr_Occurred() true in latter case).
-    0 if v == w.
-    1 if v > w.
-   XXX The docs (C API manual) say the return value is undefined in case
-   XXX of error.
-*/
-int
-PyObject_Compare(PyObject *v, PyObject *w)
-{
-	int result;
-
-	if (v == NULL || w == NULL) {
-		PyErr_BadInternalCall();
-		return -1;
-	}
-	if (v == w)
-		return 0;
-	if (Py_EnterRecursiveCall(" in cmp"))
-		return -1;
-	result = do_cmp(v, w);
-	Py_LeaveRecursiveCall();
-	return result < 0 ? -1 : result;
-}
-
-/* Return (new reference to) Py_True or Py_False. */
-static PyObject *
-convert_3way_to_object(int op, int c)
-{
-	PyObject *result;
-	switch (op) {
-	case Py_LT: c = c <  0; break;
-	case Py_LE: c = c <= 0; break;
-	case Py_EQ: c = c == 0; break;
-	case Py_NE: c = c != 0; break;
-	case Py_GT: c = c >  0; break;
-	case Py_GE: c = c >= 0; break;
-	}
-	result = c ? Py_True : Py_False;
-	Py_INCREF(result);
-	return result;
-}
-
-/* We want a rich comparison but don't have one.  Try a 3-way cmp instead.
-   Return
-   NULL      if error
-   Py_True   if v op w
-   Py_False  if not (v op w)
-*/
-static PyObject *
-try_3way_to_rich_compare(PyObject *v, PyObject *w, int op)
-{
-	int c;
-
-	c = try_3way_compare(v, w);
-	if (c >= 2)
-		c = default_3way_compare(v, w);
-	if (c <= -2)
-		return NULL;
-	return convert_3way_to_object(op, c);
-}
-
-/* Do rich comparison on v and w.  Return
-   NULL      if error
-   Else a new reference to an object other than Py_NotImplemented, usually(?):
-   Py_True   if v op w
-   Py_False  if not (v op w)
-*/
-static PyObject *
-do_richcmp(PyObject *v, PyObject *w, int op)
-{
-	PyObject *res;
-
-	res = try_rich_compare(v, w, op);
-	if (res != Py_NotImplemented)
-		return res;
-	Py_DECREF(res);
-
-	return try_3way_to_rich_compare(v, w, op);
-}
-
-/* Return:
-   NULL for exception;
-   some object not equal to NotImplemented if it is implemented
-     (this latter object may not be a Boolean).
-*/
-PyObject *
-PyObject_RichCompare(PyObject *v, PyObject *w, int op)
-{
-	PyObject *res;
-
-	assert(Py_LT <= op && op <= Py_GE);
-	if (Py_EnterRecursiveCall(" in cmp"))
-		return NULL;
-
-	/* If the types are equal, and not old-style instances, try to
-	   get out cheap (don't bother with coercions etc.). */
-	if (v->ob_type == w->ob_type && !PyInstance_Check(v)) {
-		cmpfunc fcmp;
-		richcmpfunc frich = RICHCOMPARE(v->ob_type);
-		/* If the type has richcmp, try it first.  try_rich_compare
-		   tries it two-sided, which is not needed since we've a
-		   single type only. */
-		if (frich != NULL) {
-			res = (*frich)(v, w, op);
-			if (res != Py_NotImplemented)
-				goto Done;
-			Py_DECREF(res);
-		}
-		/* No richcmp, or this particular richmp not implemented.
-		   Try 3-way cmp. */
-		fcmp = v->ob_type->tp_compare;
-		if (fcmp != NULL) {
-			int c = (*fcmp)(v, w);
-			c = adjust_tp_compare(c);
-			if (c == -2) {
-				res = NULL;
-				goto Done;
-			}
-			res = convert_3way_to_object(op, c);
-			goto Done;
-		}
-	}
-
-	/* Fast path not taken, or couldn't deliver a useful result. */
-	res = do_richcmp(v, w, op);
-Done:
-	Py_LeaveRecursiveCall();
-	return res;
-}
-
-/* Return -1 if error; 1 if v op w; 0 if not (v op w). */
-int
-PyObject_RichCompareBool(PyObject *v, PyObject *w, int op)
-{
-	PyObject *res;
-	int ok;
-
-	/* Quick result when objects are the same.
-	   Guarantees that identity implies equality. */
-	if (v == w) {
-		if (op == Py_EQ)
-			return 1;
-		else if (op == Py_NE)
-			return 0;
-	}
-
-	res = PyObject_RichCompare(v, w, op);
-	if (res == NULL)
-		return -1;
-	if (PyBool_Check(res))
-		ok = (res == Py_True);
-	else
-		ok = PyObject_IsTrue(res);
-	Py_DECREF(res);
-	return ok;
-}
-
-/* Set of hash utility functions to help maintaining the invariant that
-	if a==b then hash(a)==hash(b)
-
-   All the utility functions (_Py_Hash*()) return "-1" to signify an error.
-*/
-
-long
-_Py_HashDouble(double v)
-{
-	double intpart, fractpart;
-	int expo;
-	long hipart;
-	long x;		/* the final hash value */
-	/* This is designed so that Python numbers of different types
-	 * that compare equal hash to the same value; otherwise comparisons
-	 * of mapping keys will turn out weird.
-	 */
-
-	fractpart = modf(v, &intpart);
-	if (fractpart == 0.0) {
-		/* This must return the same hash as an equal int or long. */
-		if (intpart > LONG_MAX || -intpart > LONG_MAX) {
-			/* Convert to long and use its hash. */
-			PyObject *plong;	/* converted to Python long */
-			if (Py_IS_INFINITY(intpart))
-				/* can't convert to long int -- arbitrary */
-				v = v < 0 ? -271828.0 : 314159.0;
-			plong = PyLong_FromDouble(v);
-			if (plong == NULL)
-				return -1;
-			x = PyObject_Hash(plong);
-			Py_DECREF(plong);
-			return x;
-		}
-		/* Fits in a C long == a Python int, so is its own hash. */
-		x = (long)intpart;
-		if (x == -1)
-			x = -2;
-		return x;
-	}
-	/* The fractional part is non-zero, so we don't have to worry about
-	 * making this match the hash of some other type.
-	 * Use frexp to get at the bits in the double.
-	 * Since the VAX D double format has 56 mantissa bits, which is the
-	 * most of any double format in use, each of these parts may have as
-	 * many as (but no more than) 56 significant bits.
-	 * So, assuming sizeof(long) >= 4, each part can be broken into two
-	 * longs; frexp and multiplication are used to do that.
-	 * Also, since the Cray double format has 15 exponent bits, which is
-	 * the most of any double format in use, shifting the exponent field
-	 * left by 15 won't overflow a long (again assuming sizeof(long) >= 4).
-	 */
-	v = frexp(v, &expo);
-	v *= 2147483648.0;	/* 2**31 */
-	hipart = (long)v;	/* take the top 32 bits */
-	v = (v - (double)hipart) * 2147483648.0; /* get the next 32 bits */
-	x = hipart + (long)v + (expo << 15);
-	if (x == -1)
-		x = -2;
-	return x;
-}
-
-long
-_Py_HashPointer(void *p)
-{
-#if SIZEOF_LONG >= SIZEOF_VOID_P
-	return (long)p;
-#else
-	/* convert to a Python long and hash that */
-	PyObject* longobj;
-	long x;
-
-	if ((longobj = PyLong_FromVoidPtr(p)) == NULL) {
-		x = -1;
-		goto finally;
-	}
-	x = PyObject_Hash(longobj);
-
-finally:
-	Py_XDECREF(longobj);
-	return x;
-#endif
-}
-
-
-long
-PyObject_Hash(PyObject *v)
-{
-	PyTypeObject *tp = v->ob_type;
-	if (tp->tp_hash != NULL)
-		return (*tp->tp_hash)(v);
-	if (tp->tp_compare == NULL && RICHCOMPARE(tp) == NULL) {
-		return _Py_HashPointer(v); /* Use address as hash value */
-	}
-	/* If there's a cmp but no hash defined, the object can't be hashed */
-	PyErr_Format(PyExc_TypeError, "unhashable type: '%.200s'",
-		     v->ob_type->tp_name);
-	return -1;
-}
-
-PyObject *
-PyObject_GetAttrString(PyObject *v, const char *name)
-{
-	PyObject *w, *res;
-
-	if (v->ob_type->tp_getattr != NULL)
-		return (*v->ob_type->tp_getattr)(v, (char*)name);
-	w = PyString_InternFromString(name);
-	if (w == NULL)
-		return NULL;
-	res = PyObject_GetAttr(v, w);
-	Py_XDECREF(w);
-	return res;
-}
-
-int
-PyObject_HasAttrString(PyObject *v, const char *name)
-{
-	PyObject *res = PyObject_GetAttrString(v, name);
-	if (res != NULL) {
-		Py_DECREF(res);
-		return 1;
-	}
-	PyErr_Clear();
-	return 0;
-}
-
-int
-PyObject_SetAttrString(PyObject *v, const char *name, PyObject *w)
-{
-	PyObject *s;
-	int res;
-
-	if (v->ob_type->tp_setattr != NULL)
-		return (*v->ob_type->tp_setattr)(v, (char*)name, w);
-	s = PyString_InternFromString(name);
-	if (s == NULL)
-		return -1;
-	res = PyObject_SetAttr(v, s, w);
-	Py_XDECREF(s);
-	return res;
-}
-
-PyObject *
-PyObject_GetAttr(PyObject *v, PyObject *name)
-{
-	PyTypeObject *tp = v->ob_type;
-
-	if (!PyString_Check(name)) {
-#ifdef Py_USING_UNICODE
-		/* The Unicode to string conversion is done here because the
-		   existing tp_getattro slots expect a string object as name
-		   and we wouldn't want to break those. */
-		if (PyUnicode_Check(name)) {
-			name = _PyUnicode_AsDefaultEncodedString(name, NULL);
-			if (name == NULL)
-				return NULL;
-		}
-		else
-#endif
-		{
-			PyErr_Format(PyExc_TypeError,
-				     "attribute name must be string, not '%.200s'",
-				     name->ob_type->tp_name);
-			return NULL;
-		}
-	}
-	if (tp->tp_getattro != NULL)
-		return (*tp->tp_getattro)(v, name);
-	if (tp->tp_getattr != NULL)
-		return (*tp->tp_getattr)(v, PyString_AS_STRING(name));
-	PyErr_Format(PyExc_AttributeError,
-		     "'%.50s' object has no attribute '%.400s'",
-		     tp->tp_name, PyString_AS_STRING(name));
-	return NULL;
-}
-
-int
-PyObject_HasAttr(PyObject *v, PyObject *name)
-{
-	PyObject *res = PyObject_GetAttr(v, name);
-	if (res != NULL) {
-		Py_DECREF(res);
-		return 1;
-	}
-	PyErr_Clear();
-	return 0;
-}
-
-int
-PyObject_SetAttr(PyObject *v, PyObject *name, PyObject *value)
-{
-	PyTypeObject *tp = v->ob_type;
-	int err;
-
-	if (!PyString_Check(name)){
-#ifdef Py_USING_UNICODE
-		/* The Unicode to string conversion is done here because the
-		   existing tp_setattro slots expect a string object as name
-		   and we wouldn't want to break those. */
-		if (PyUnicode_Check(name)) {
-			name = PyUnicode_AsEncodedString(name, NULL, NULL);
-			if (name == NULL)
-				return -1;
-		}
-		else
-#endif
-		{
-			PyErr_Format(PyExc_TypeError,
-				     "attribute name must be string, not '%.200s'",
-				     name->ob_type->tp_name);
-			return -1;
-		}
-	}
-	else
-		Py_INCREF(name);
-
-	PyString_InternInPlace(&name);
-	if (tp->tp_setattro != NULL) {
-		err = (*tp->tp_setattro)(v, name, value);
-		Py_DECREF(name);
-		return err;
-	}
-	if (tp->tp_setattr != NULL) {
-		err = (*tp->tp_setattr)(v, PyString_AS_STRING(name), value);
-		Py_DECREF(name);
-		return err;
-	}
-	Py_DECREF(name);
-	if (tp->tp_getattr == NULL && tp->tp_getattro == NULL)
-		PyErr_Format(PyExc_TypeError,
-			     "'%.100s' object has no attributes "
-			     "(%s .%.100s)",
-			     tp->tp_name,
-			     value==NULL ? "del" : "assign to",
-			     PyString_AS_STRING(name));
-	else
-		PyErr_Format(PyExc_TypeError,
-			     "'%.100s' object has only read-only attributes "
-			     "(%s .%.100s)",
-			     tp->tp_name,
-			     value==NULL ? "del" : "assign to",
-			     PyString_AS_STRING(name));
-	return -1;
-}
-
-/* Helper to get a pointer to an object's __dict__ slot, if any */
-
-PyObject **
-_PyObject_GetDictPtr(PyObject *obj)
-{
-	Py_ssize_t dictoffset;
-	PyTypeObject *tp = obj->ob_type;
-
-	if (!(tp->tp_flags & Py_TPFLAGS_HAVE_CLASS))
-		return NULL;
-	dictoffset = tp->tp_dictoffset;
-	if (dictoffset == 0)
-		return NULL;
-	if (dictoffset < 0) {
-		Py_ssize_t tsize;
-		size_t size;
-
-		tsize = ((PyVarObject *)obj)->ob_size;
-		if (tsize < 0)
-			tsize = -tsize;
-		size = _PyObject_VAR_SIZE(tp, tsize);
-
-		dictoffset += (long)size;
-		assert(dictoffset > 0);
-		assert(dictoffset % SIZEOF_VOID_P == 0);
-	}
-	return (PyObject **) ((char *)obj + dictoffset);
-}
-
-PyObject *
-PyObject_SelfIter(PyObject *obj)
-{
-	Py_INCREF(obj);
-	return obj;
-}
-
-/* Generic GetAttr functions - put these in your tp_[gs]etattro slot */
-
-PyObject *
-PyObject_GenericGetAttr(PyObject *obj, PyObject *name)
-{
-	PyTypeObject *tp = obj->ob_type;
-	PyObject *descr = NULL;
-	PyObject *res = NULL;
-	descrgetfunc f;
-	Py_ssize_t dictoffset;
-	PyObject **dictptr;
-
-	if (!PyString_Check(name)){
-#ifdef Py_USING_UNICODE
-		/* The Unicode to string conversion is done here because the
-		   existing tp_setattro slots expect a string object as name
-		   and we wouldn't want to break those. */
-		if (PyUnicode_Check(name)) {
-			name = PyUnicode_AsEncodedString(name, NULL, NULL);
-			if (name == NULL)
-				return NULL;
-		}
-		else
-#endif
-		{
-			PyErr_Format(PyExc_TypeError,
-				     "attribute name must be string, not '%.200s'",
-				     name->ob_type->tp_name);
-			return NULL;
-		}
-	}
-	else
-		Py_INCREF(name);
-
-	if (tp->tp_dict == NULL) {
-		if (PyType_Ready(tp) < 0)
-			goto done;
-	}
-
-	/* Inline _PyType_Lookup */
-	{
-		Py_ssize_t i, n;
-		PyObject *mro, *base, *dict;
-
-		/* Look in tp_dict of types in MRO */
-		mro = tp->tp_mro;
-		assert(mro != NULL);
-		assert(PyTuple_Check(mro));
-		n = PyTuple_GET_SIZE(mro);
-		for (i = 0; i < n; i++) {
-			base = PyTuple_GET_ITEM(mro, i);
-			if (PyClass_Check(base))
-				dict = ((PyClassObject *)base)->cl_dict;
-			else {
-				assert(PyType_Check(base));
-				dict = ((PyTypeObject *)base)->tp_dict;
-			}
-			assert(dict && PyDict_Check(dict));
-			descr = PyDict_GetItem(dict, name);
-			if (descr != NULL)
-				break;
-		}
-	}
-
-	Py_XINCREF(descr);
-
-	f = NULL;
-	if (descr != NULL &&
-	    PyType_HasFeature(descr->ob_type, Py_TPFLAGS_HAVE_CLASS)) {
-		f = descr->ob_type->tp_descr_get;
-		if (f != NULL && PyDescr_IsData(descr)) {
-			res = f(descr, obj, (PyObject *)obj->ob_type);
-			Py_DECREF(descr);
-			goto done;
-		}
-	}
-
-	/* Inline _PyObject_GetDictPtr */
-	dictoffset = tp->tp_dictoffset;
-	if (dictoffset != 0) {
-		PyObject *dict;
-		if (dictoffset < 0) {
-			Py_ssize_t tsize;
-			size_t size;
-
-			tsize = ((PyVarObject *)obj)->ob_size;
-			if (tsize < 0)
-				tsize = -tsize;
-			size = _PyObject_VAR_SIZE(tp, tsize);
-
-			dictoffset += (long)size;
-			assert(dictoffset > 0);
-			assert(dictoffset % SIZEOF_VOID_P == 0);
-		}
-		dictptr = (PyObject **) ((char *)obj + dictoffset);
-		dict = *dictptr;
-		if (dict != NULL) {
-			res = PyDict_GetItem(dict, name);
-			if (res != NULL) {
-				Py_INCREF(res);
-				Py_XDECREF(descr);
-				goto done;
-			}
-		}
-	}
-
-	if (f != NULL) {
-		res = f(descr, obj, (PyObject *)obj->ob_type);
-		Py_DECREF(descr);
-		goto done;
-	}
-
-	if (descr != NULL) {
-		res = descr;
-		/* descr was already increfed above */
-		goto done;
-	}
-
-	PyErr_Format(PyExc_AttributeError,
-		     "'%.50s' object has no attribute '%.400s'",
-		     tp->tp_name, PyString_AS_STRING(name));
-  done:
-	Py_DECREF(name);
-	return res;
-}
-
-int
-PyObject_GenericSetAttr(PyObject *obj, PyObject *name, PyObject *value)
-{
-	PyTypeObject *tp = obj->ob_type;
-	PyObject *descr;
-	descrsetfunc f;
-	PyObject **dictptr;
-	int res = -1;
-
-	if (!PyString_Check(name)){
-#ifdef Py_USING_UNICODE
-		/* The Unicode to string conversion is done here because the
-		   existing tp_setattro slots expect a string object as name
-		   and we wouldn't want to break those. */
-		if (PyUnicode_Check(name)) {
-			name = PyUnicode_AsEncodedString(name, NULL, NULL);
-			if (name == NULL)
-				return -1;
-		}
-		else
-#endif
-		{
-			PyErr_Format(PyExc_TypeError,
-				     "attribute name must be string, not '%.200s'",
-				     name->ob_type->tp_name);
-			return -1;
-		}
-	}
-	else
-		Py_INCREF(name);
-
-	if (tp->tp_dict == NULL) {
-		if (PyType_Ready(tp) < 0)
-			goto done;
-	}
-
-	descr = _PyType_Lookup(tp, name);
-	f = NULL;
-	if (descr != NULL &&
-	    PyType_HasFeature(descr->ob_type, Py_TPFLAGS_HAVE_CLASS)) {
-		f = descr->ob_type->tp_descr_set;
-		if (f != NULL && PyDescr_IsData(descr)) {
-			res = f(descr, obj, value);
-			goto done;
-		}
-	}
-
-	dictptr = _PyObject_GetDictPtr(obj);
-	if (dictptr != NULL) {
-		PyObject *dict = *dictptr;
-		if (dict == NULL && value != NULL) {
-			dict = PyDict_New();
-			if (dict == NULL)
-				goto done;
-			*dictptr = dict;
-		}
-		if (dict != NULL) {
-			if (value == NULL)
-				res = PyDict_DelItem(dict, name);
-			else
-				res = PyDict_SetItem(dict, name, value);
-			if (res < 0 && PyErr_ExceptionMatches(PyExc_KeyError))
-				PyErr_SetObject(PyExc_AttributeError, name);
-			goto done;
-		}
-	}
-
-	if (f != NULL) {
-		res = f(descr, obj, value);
-		goto done;
-	}
-
-	if (descr == NULL) {
-		PyErr_Format(PyExc_AttributeError,
-			     "'%.100s' object has no attribute '%.200s'",
-			     tp->tp_name, PyString_AS_STRING(name));
-		goto done;
-	}
-
-	PyErr_Format(PyExc_AttributeError,
-		     "'%.50s' object attribute '%.400s' is read-only",
-		     tp->tp_name, PyString_AS_STRING(name));
-  done:
-	Py_DECREF(name);
-	return res;
-}
-
-/* Test a value used as condition, e.g., in a for or if statement.
-   Return -1 if an error occurred */
-
-int
-PyObject_IsTrue(PyObject *v)
-{
-	Py_ssize_t res;
-	if (v == Py_True)
-		return 1;
-	if (v == Py_False)
-		return 0;
-	if (v == Py_None)
-		return 0;
-	else if (v->ob_type->tp_as_number != NULL &&
-		 v->ob_type->tp_as_number->nb_nonzero != NULL)
-		res = (*v->ob_type->tp_as_number->nb_nonzero)(v);
-	else if (v->ob_type->tp_as_mapping != NULL &&
-		 v->ob_type->tp_as_mapping->mp_length != NULL)
-		res = (*v->ob_type->tp_as_mapping->mp_length)(v);
-	else if (v->ob_type->tp_as_sequence != NULL &&
-		 v->ob_type->tp_as_sequence->sq_length != NULL)
-		res = (*v->ob_type->tp_as_sequence->sq_length)(v);
-	else
-		return 1;
-	/* if it is negative, it should be either -1 or -2 */
-	return (res > 0) ? 1 : Py_SAFE_DOWNCAST(res, Py_ssize_t, int);
-}
-
-/* equivalent of 'not v'
-   Return -1 if an error occurred */
-
-int
-PyObject_Not(PyObject *v)
-{
-	int res;
-	res = PyObject_IsTrue(v);
-	if (res < 0)
-		return res;
-	return res == 0;
-}
-
-/* Coerce two numeric types to the "larger" one.
-   Increment the reference count on each argument.
-   Return value:
-   -1 if an error occurred;
-   0 if the coercion succeeded (and then the reference counts are increased);
-   1 if no coercion is possible (and no error is raised).
-*/
-int
-PyNumber_CoerceEx(PyObject **pv, PyObject **pw)
-{
-	register PyObject *v = *pv;
-	register PyObject *w = *pw;
-	int res;
-
-	/* Shortcut only for old-style types */
-	if (v->ob_type == w->ob_type &&
-	    !PyType_HasFeature(v->ob_type, Py_TPFLAGS_CHECKTYPES))
-	{
-		Py_INCREF(v);
-		Py_INCREF(w);
-		return 0;
-	}
-	if (v->ob_type->tp_as_number && v->ob_type->tp_as_number->nb_coerce) {
-		res = (*v->ob_type->tp_as_number->nb_coerce)(pv, pw);
-		if (res <= 0)
-			return res;
-	}
-	if (w->ob_type->tp_as_number && w->ob_type->tp_as_number->nb_coerce) {
-		res = (*w->ob_type->tp_as_number->nb_coerce)(pw, pv);
-		if (res <= 0)
-			return res;
-	}
-	return 1;
-}
-
-/* Coerce two numeric types to the "larger" one.
-   Increment the reference count on each argument.
-   Return -1 and raise an exception if no coercion is possible
-   (and then no reference count is incremented).
-*/
-int
-PyNumber_Coerce(PyObject **pv, PyObject **pw)
-{
-	int err = PyNumber_CoerceEx(pv, pw);
-	if (err <= 0)
-		return err;
-	PyErr_SetString(PyExc_TypeError, "number coercion failed");
-	return -1;
-}
-
-
-/* Test whether an object can be called */
-
-int
-PyCallable_Check(PyObject *x)
-{
-	if (x == NULL)
-		return 0;
-	if (PyInstance_Check(x)) {
-		PyObject *call = PyObject_GetAttrString(x, "__call__");
-		if (call == NULL) {
-			PyErr_Clear();
-			return 0;
-		}
-		/* Could test recursively but don't, for fear of endless
-		   recursion if some joker sets self.__call__ = self */
-		Py_DECREF(call);
-		return 1;
-	}
-	else {
-		return x->ob_type->tp_call != NULL;
-	}
-}
-
-/* Helper for PyObject_Dir.
-   Merge the __dict__ of aclass into dict, and recursively also all
-   the __dict__s of aclass's base classes.  The order of merging isn't
-   defined, as it's expected that only the final set of dict keys is
-   interesting.
-   Return 0 on success, -1 on error.
-*/
-
-static int
-merge_class_dict(PyObject* dict, PyObject* aclass)
-{
-	PyObject *classdict;
-	PyObject *bases;
-
-	assert(PyDict_Check(dict));
-	assert(aclass);
-
-	/* Merge in the type's dict (if any). */
-	classdict = PyObject_GetAttrString(aclass, "__dict__");
-	if (classdict == NULL)
-		PyErr_Clear();
-	else {
-		int status = PyDict_Update(dict, classdict);
-		Py_DECREF(classdict);
-		if (status < 0)
-			return -1;
-	}
-
-	/* Recursively merge in the base types' (if any) dicts. */
-	bases = PyObject_GetAttrString(aclass, "__bases__");
-	if (bases == NULL)
-		PyErr_Clear();
-	else {
-		/* We have no guarantee that bases is a real tuple */
-		Py_ssize_t i, n;
-		n = PySequence_Size(bases); /* This better be right */
-		if (n < 0)
-			PyErr_Clear();
-		else {
-			for (i = 0; i < n; i++) {
-				int status;
-				PyObject *base = PySequence_GetItem(bases, i);
-				if (base == NULL) {
-					Py_DECREF(bases);
-					return -1;
-				}
-				status = merge_class_dict(dict, base);
-				Py_DECREF(base);
-				if (status < 0) {
-					Py_DECREF(bases);
-					return -1;
-				}
-			}
-		}
-		Py_DECREF(bases);
-	}
-	return 0;
-}
-
-/* Helper for PyObject_Dir.
-   If obj has an attr named attrname that's a list, merge its string
-   elements into keys of dict.
-   Return 0 on success, -1 on error.  Errors due to not finding the attr,
-   or the attr not being a list, are suppressed.
-*/
-
-static int
-merge_list_attr(PyObject* dict, PyObject* obj, const char *attrname)
-{
-	PyObject *list;
-	int result = 0;
-
-	assert(PyDict_Check(dict));
-	assert(obj);
-	assert(attrname);
-
-	list = PyObject_GetAttrString(obj, attrname);
-	if (list == NULL)
-		PyErr_Clear();
-
-	else if (PyList_Check(list)) {
-		int i;
-		for (i = 0; i < PyList_GET_SIZE(list); ++i) {
-			PyObject *item = PyList_GET_ITEM(list, i);
-			if (PyString_Check(item)) {
-				result = PyDict_SetItem(dict, item, Py_None);
-				if (result < 0)
-					break;
-			}
-		}
-	}
-
-	Py_XDECREF(list);
-	return result;
-}
-
-/* Like __builtin__.dir(arg).  See bltinmodule.c's builtin_dir for the
-   docstring, which should be kept in synch with this implementation. */
-
-PyObject *
-PyObject_Dir(PyObject *arg)
-{
-	/* Set exactly one of these non-NULL before the end. */
-	PyObject *result = NULL;	/* result list */
-	PyObject *masterdict = NULL;	/* result is masterdict.keys() */
-
-	/* If NULL arg, return the locals. */
-	if (arg == NULL) {
-		PyObject *locals = PyEval_GetLocals();
-		if (locals == NULL)
-			goto error;
-		result = PyMapping_Keys(locals);
-		if (result == NULL)
-			goto error;
-	}
-
-	/* Elif this is some form of module, we only want its dict. */
-	else if (PyModule_Check(arg)) {
-		masterdict = PyObject_GetAttrString(arg, "__dict__");
-		if (masterdict == NULL)
-			goto error;
-		if (!PyDict_Check(masterdict)) {
-			PyErr_SetString(PyExc_TypeError,
-					"module.__dict__ is not a dictionary");
-			goto error;
-		}
-	}
-
-	/* Elif some form of type or class, grab its dict and its bases.
-	   We deliberately don't suck up its __class__, as methods belonging
-	   to the metaclass would probably be more confusing than helpful. */
-	else if (PyType_Check(arg) || PyClass_Check(arg)) {
-		masterdict = PyDict_New();
-		if (masterdict == NULL)
-			goto error;
-		if (merge_class_dict(masterdict, arg) < 0)
-			goto error;
-	}
-
-	/* Else look at its dict, and the attrs reachable from its class. */
-	else {
-		PyObject *itsclass;
-		/* Create a dict to start with.  CAUTION:  Not everything
-		   responding to __dict__ returns a dict! */
-		masterdict = PyObject_GetAttrString(arg, "__dict__");
-		if (masterdict == NULL) {
-			PyErr_Clear();
-			masterdict = PyDict_New();
-		}
-		else if (!PyDict_Check(masterdict)) {
-			Py_DECREF(masterdict);
-			masterdict = PyDict_New();
-		}
-		else {
-			/* The object may have returned a reference to its
-			   dict, so copy it to avoid mutating it. */
-			PyObject *temp = PyDict_Copy(masterdict);
-			Py_DECREF(masterdict);
-			masterdict = temp;
-		}
-		if (masterdict == NULL)
-			goto error;
-
-		/* Merge in __members__ and __methods__ (if any).
-		   XXX Would like this to go away someday; for now, it's
-		   XXX needed to get at im_self etc of method objects. */
-		if (merge_list_attr(masterdict, arg, "__members__") < 0)
-			goto error;
-		if (merge_list_attr(masterdict, arg, "__methods__") < 0)
-			goto error;
-
-		/* Merge in attrs reachable from its class.
-		   CAUTION:  Not all objects have a __class__ attr. */
-		itsclass = PyObject_GetAttrString(arg, "__class__");
-		if (itsclass == NULL)
-			PyErr_Clear();
-		else {
-			int status = merge_class_dict(masterdict, itsclass);
-			Py_DECREF(itsclass);
-			if (status < 0)
-				goto error;
-		}
-	}
-
-	assert((result == NULL) ^ (masterdict == NULL));
-	if (masterdict != NULL) {
-		/* The result comes from its keys. */
-		assert(result == NULL);
-		result = PyDict_Keys(masterdict);
-		if (result == NULL)
-			goto error;
-	}
-
-	assert(result);
-	if (!PyList_Check(result)) {
-		PyErr_Format(PyExc_TypeError,
-			"Expected keys() to be a list, not '%.200s'",
-			result->ob_type->tp_name);
-		goto error;
-	}
-	if (PyList_Sort(result) != 0)
-		goto error;
-	else
-		goto normal_return;
-
-  error:
-	Py_XDECREF(result);
-	result = NULL;
-	/* fall through */
-  normal_return:
-  	Py_XDECREF(masterdict);
-	return result;
-}
-
-/*
-NoObject is usable as a non-NULL undefined value, used by the macro None.
-There is (and should be!) no way to create other objects of this type,
-so there is exactly one (which is indestructible, by the way).
-(XXX This type and the type of NotImplemented below should be unified.)
-*/
-
-/* ARGSUSED */
-static PyObject *
-none_repr(PyObject *op)
-{
-	return PyString_FromString("None");
-}
-
-/* ARGUSED */
-static void
-none_dealloc(PyObject* ignore)
-{
-	/* This should never get called, but we also don't want to SEGV if
-	 * we accidently decref None out of existance.
-	 */
-	Py_FatalError("deallocating None");
-}
-
-
-static PyTypeObject PyNone_Type = {
-	PyObject_HEAD_INIT(&PyType_Type)
-	0,
-	"NoneType",
-	0,
-	0,
-	none_dealloc,	/*tp_dealloc*/ /*never called*/
-	0,		/*tp_print*/
-	0,		/*tp_getattr*/
-	0,		/*tp_setattr*/
-	0,		/*tp_compare*/
-	none_repr,	/*tp_repr*/
-	0,		/*tp_as_number*/
-	0,		/*tp_as_sequence*/
-	0,		/*tp_as_mapping*/
-	0,		/*tp_hash */
-};
-
-PyObject _Py_NoneStruct = {
-	PyObject_HEAD_INIT(&PyNone_Type)
-};
-
-/* NotImplemented is an object that can be used to signal that an
-   operation is not implemented for the given type combination. */
-
-static PyObject *
-NotImplemented_repr(PyObject *op)
-{
-	return PyString_FromString("NotImplemented");
-}
-
-static PyTypeObject PyNotImplemented_Type = {
-	PyObject_HEAD_INIT(&PyType_Type)
-	0,
-	"NotImplementedType",
-	0,
-	0,
-	none_dealloc,	/*tp_dealloc*/ /*never called*/
-	0,		/*tp_print*/
-	0,		/*tp_getattr*/
-	0,		/*tp_setattr*/
-	0,		/*tp_compare*/
-	NotImplemented_repr, /*tp_repr*/
-	0,		/*tp_as_number*/
-	0,		/*tp_as_sequence*/
-	0,		/*tp_as_mapping*/
-	0,		/*tp_hash */
-};
-
-PyObject _Py_NotImplementedStruct = {
-	PyObject_HEAD_INIT(&PyNotImplemented_Type)
-};
-
-void
-_Py_ReadyTypes(void)
-{
-	if (PyType_Ready(&PyType_Type) < 0)
-		Py_FatalError("Can't initialize 'type'");
-
-	if (PyType_Ready(&_PyWeakref_RefType) < 0)
-		Py_FatalError("Can't initialize 'weakref'");
-
-	if (PyType_Ready(&PyBool_Type) < 0)
-		Py_FatalError("Can't initialize 'bool'");
-
-	if (PyType_Ready(&PyString_Type) < 0)
-		Py_FatalError("Can't initialize 'str'");
-
-	if (PyType_Ready(&PyList_Type) < 0)
-		Py_FatalError("Can't initialize 'list'");
-
-	if (PyType_Ready(&PyNone_Type) < 0)
-		Py_FatalError("Can't initialize type(None)");
-
-	if (PyType_Ready(&PyNotImplemented_Type) < 0)
-		Py_FatalError("Can't initialize type(NotImplemented)");
-}
-
-
-#ifdef Py_TRACE_REFS
-
-void
-_Py_NewReference(PyObject *op)
-{
-	_Py_INC_REFTOTAL;
-	op->ob_refcnt = 1;
-	_Py_AddToAllObjects(op, 1);
-	_Py_INC_TPALLOCS(op);
-}
-
-void
-_Py_ForgetReference(register PyObject *op)
-{
-#ifdef SLOW_UNREF_CHECK
-        register PyObject *p;
-#endif
-	if (op->ob_refcnt < 0)
-		Py_FatalError("UNREF negative refcnt");
-	if (op == &refchain ||
-	    op->_ob_prev->_ob_next != op || op->_ob_next->_ob_prev != op)
-		Py_FatalError("UNREF invalid object");
-#ifdef SLOW_UNREF_CHECK
-	for (p = refchain._ob_next; p != &refchain; p = p->_ob_next) {
-		if (p == op)
-			break;
-	}
-	if (p == &refchain) /* Not found */
-		Py_FatalError("UNREF unknown object");
-#endif
-	op->_ob_next->_ob_prev = op->_ob_prev;
-	op->_ob_prev->_ob_next = op->_ob_next;
-	op->_ob_next = op->_ob_prev = NULL;
-	_Py_INC_TPFREES(op);
-}
-
-void
-_Py_Dealloc(PyObject *op)
-{
-	destructor dealloc = op->ob_type->tp_dealloc;
-	_Py_ForgetReference(op);
-	(*dealloc)(op);
-}
-
-/* Print all live objects.  Because PyObject_Print is called, the
- * interpreter must be in a healthy state.
- */
-void
-_Py_PrintReferences(FILE *fp)
-{
-	PyObject *op;
-	fprintf(fp, "Remaining objects:\n");
-	for (op = refchain._ob_next; op != &refchain; op = op->_ob_next) {
-		fprintf(fp, "%p [%" PY_FORMAT_SIZE_T "d] ", op, op->ob_refcnt);
-		if (PyObject_Print(op, fp, 0) != 0)
-			PyErr_Clear();
-		putc('\n', fp);
-	}
-}
-
-/* Print the addresses of all live objects.  Unlike _Py_PrintReferences, this
- * doesn't make any calls to the Python C API, so is always safe to call.
- */
-void
-_Py_PrintReferenceAddresses(FILE *fp)
-{
-	PyObject *op;
-	fprintf(fp, "Remaining object addresses:\n");
-	for (op = refchain._ob_next; op != &refchain; op = op->_ob_next)
-		fprintf(fp, "%p [%" PY_FORMAT_SIZE_T "d] %s\n", op,
-			op->ob_refcnt, op->ob_type->tp_name);
-}
-
-PyObject *
-_Py_GetObjects(PyObject *self, PyObject *args)
-{
-	int i, n;
-	PyObject *t = NULL;
-	PyObject *res, *op;
-
-	if (!PyArg_ParseTuple(args, "i|O", &n, &t))
-		return NULL;
-	op = refchain._ob_next;
-	res = PyList_New(0);
-	if (res == NULL)
-		return NULL;
-	for (i = 0; (n == 0 || i < n) && op != &refchain; i++) {
-		while (op == self || op == args || op == res || op == t ||
-		       (t != NULL && op->ob_type != (PyTypeObject *) t)) {
-			op = op->_ob_next;
-			if (op == &refchain)
-				return res;
-		}
-		if (PyList_Append(res, op) < 0) {
-			Py_DECREF(res);
-			return NULL;
-		}
-		op = op->_ob_next;
-	}
-	return res;
-}
-
-#endif
-
-
-/* Hack to force loading of cobject.o */
-PyTypeObject *_Py_cobject_hack = &PyCObject_Type;
-
-
-/* Hack to force loading of abstract.o */
-Py_ssize_t (*_Py_abstract_hack)(PyObject *) = PyObject_Size;
-
-
-/* Python's malloc wrappers (see pymem.h) */
-
-void *
-PyMem_Malloc(size_t nbytes)
-{
-	return PyMem_MALLOC(nbytes);
-}
-
-void *
-PyMem_Realloc(void *p, size_t nbytes)
-{
-	return PyMem_REALLOC(p, nbytes);
-}
-
-void
-PyMem_Free(void *p)
-{
-	PyMem_FREE(p);
-}
-
-
-/* These methods are used to control infinite recursion in repr, str, print,
-   etc.  Container objects that may recursively contain themselves,
-   e.g. builtin dictionaries and lists, should used Py_ReprEnter() and
-   Py_ReprLeave() to avoid infinite recursion.
-
-   Py_ReprEnter() returns 0 the first time it is called for a particular
-   object and 1 every time thereafter.  It returns -1 if an exception
-   occurred.  Py_ReprLeave() has no return value.
-
-   See dictobject.c and listobject.c for examples of use.
-*/
-
-#define KEY "Py_Repr"
-
-int
-Py_ReprEnter(PyObject *obj)
-{
-	PyObject *dict;
-	PyObject *list;
-	Py_ssize_t i;
-
-	dict = PyThreadState_GetDict();
-	if (dict == NULL)
-		return 0;
-	list = PyDict_GetItemString(dict, KEY);
-	if (list == NULL) {
-		list = PyList_New(0);
-		if (list == NULL)
-			return -1;
-		if (PyDict_SetItemString(dict, KEY, list) < 0)
-			return -1;
-		Py_DECREF(list);
-	}
-	i = PyList_GET_SIZE(list);
-	while (--i >= 0) {
-		if (PyList_GET_ITEM(list, i) == obj)
-			return 1;
-	}
-	PyList_Append(list, obj);
-	return 0;
-}
-
-void
-Py_ReprLeave(PyObject *obj)
-{
-	PyObject *dict;
-	PyObject *list;
-	Py_ssize_t i;
-
-	dict = PyThreadState_GetDict();
-	if (dict == NULL)
-		return;
-	list = PyDict_GetItemString(dict, KEY);
-	if (list == NULL || !PyList_Check(list))
-		return;
-	i = PyList_GET_SIZE(list);
-	/* Count backwards because we always expect obj to be list[-1] */
-	while (--i >= 0) {
-		if (PyList_GET_ITEM(list, i) == obj) {
-			PyList_SetSlice(list, i, i + 1, NULL);
-			break;
-		}
-	}
-}
-
-/* Trashcan support. */
-
-/* Current call-stack depth of tp_dealloc calls. */
-int _PyTrash_delete_nesting = 0;
-
-/* List of objects that still need to be cleaned up, singly linked via their
- * gc headers' gc_prev pointers.
- */
-PyObject *_PyTrash_delete_later = NULL;
-
-/* Add op to the _PyTrash_delete_later list.  Called when the current
- * call-stack depth gets large.  op must be a currently untracked gc'ed
- * object, with refcount 0.  Py_DECREF must already have been called on it.
- */
-void
-_PyTrash_deposit_object(PyObject *op)
-{
-	assert(PyObject_IS_GC(op));
-	assert(_Py_AS_GC(op)->gc.gc_refs == _PyGC_REFS_UNTRACKED);
-	assert(op->ob_refcnt == 0);
-	_Py_AS_GC(op)->gc.gc_prev = (PyGC_Head *)_PyTrash_delete_later;
-	_PyTrash_delete_later = op;
-}
-
-/* Dealloccate all the objects in the _PyTrash_delete_later list.  Called when
- * the call-stack unwinds again.
- */
-void
-_PyTrash_destroy_chain(void)
-{
-	while (_PyTrash_delete_later) {
-		PyObject *op = _PyTrash_delete_later;
-		destructor dealloc = op->ob_type->tp_dealloc;
-
-		_PyTrash_delete_later =
-			(PyObject*) _Py_AS_GC(op)->gc.gc_prev;
-
-		/* Call the deallocator directly.  This used to try to
-		 * fool Py_DECREF into calling it indirectly, but
-		 * Py_DECREF was already called on this object, and in
-		 * assorted non-release builds calling Py_DECREF again ends
-		 * up distorting allocation statistics.
-		 */
-		assert(op->ob_refcnt == 0);
-		++_PyTrash_delete_nesting;
-		(*dealloc)(op);
-		--_PyTrash_delete_nesting;
-	}
-}
-
-#ifdef __cplusplus
-}
-#endif
-