[pyke] / util.c

/* -*-c-*-
 *
 * Miscellaneous utilities (not Catacomb-specific)
 *
 * (c) 2005 Straylight/Edgeware
 */

/*----- Licensing notice --------------------------------------------------*
 *
 * This file is part of the Python interface to Catacomb.
 *
 * Catacomb/Python is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Catacomb/Python is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Catacomb/Python; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/*----- Header files ------------------------------------------------------*/

#include "catacomb-python.h"

/*----- External values ---------------------------------------------------*/

static PyObject *modname = 0;

/*----- Conversions -------------------------------------------------------*/

PyObject *getulong(unsigned long w)
{
  if (w <= LONG_MAX)
    return (PyInt_FromLong(w));
  else
    return (PyLong_FromUnsignedLong(w));
}

static PyObject *i32 = 0;
static int init_i32(void)
  { if (!i32 && (i32 = PyInt_FromLong(32)) == 0) return (-1); return (0); }

PyObject *getk64(kludge64 u)
{
  PyObject *i = 0, *j = 0, *t;
  PyObject *rc = 0;

  if (init_i32()) goto end;
  if ((i = PyLong_FromUnsignedLong(HI64(u))) == 0) goto end;
  if ((t = PyNumber_InPlaceLshift(i, i32)) == 0) goto end;
  Py_DECREF(i); i = t;
  if ((j = PyLong_FromUnsignedLong(LO64(u))) == 0) goto end;
  if ((t = PyNumber_InPlaceOr(i, j)) == 0) goto end;
  Py_DECREF(i); i = t;
  if ((rc = PyNumber_Int(i)) == 0) goto end;
end:
  if (i) Py_DECREF(i);
  if (j) Py_DECREF(j);
  return (rc);
}

PyObject *getbool(int b)
{
  if (b) RETURN_TRUE;
  else RETURN_FALSE;
}

PyObject *abstract_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
{
  PyErr_SetString(PyExc_TypeError, "can't instantiate this class");
  return (0);
}

int convulong(PyObject *o, void *pp)
{
  long i;
  unsigned long *p = pp;
  PyObject *t;

  if (!o) VALERR("can't delete");
  if (PyInt_Check(o)) {
    i = PyInt_AS_LONG(o);
    if (i < 0) VALERR("must be nonnegative");
    *p = i;
  } else {
    if ((t = PyNumber_Long(o)) == 0) goto end;
    *p = PyLong_AsUnsignedLong(t);
    Py_DECREF(t);
    if (PyErr_Occurred()) goto end;
  }
  return (1);
end:
  return (0);
}

#define CONVU_(n)							\
  int convu##n(PyObject *o, void *pp)					\
  {									\
    unsigned long u;							\
    uint##n *p = pp;							\
									\
    if (!convulong(o, &u)) goto end;					\
    if (u > MASK##n) VALERR("out of range");				\
    *p = u;								\
    return (1);								\
  end:									\
    return (0);								\
  }
DOUINTSZ(CONVU_)

int convuint(PyObject *o, void *pp)
{
  unsigned long u;
  unsigned *p = pp;

  if (!convulong(o, &u)) goto end;
  if (u > UINT_MAX) VALERR("out of range");
  *p = u;
  return (1);
end:
  return (0);
}

int convk64(PyObject *o, void *pp)
{
  PyObject *i = 0, *t;
  int rc = 0;
  uint32 lo, hi;

  if (!o) VALERR("can't delete");
  if (init_i32()) goto end;
  if ((i = PyNumber_Int(o)) == 0) goto end;
  lo = PyInt_AsUnsignedLongMask(i);
  if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end;
  Py_DECREF(i); i = t;
  hi = PyInt_AsUnsignedLongMask(i);
  if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end;
  Py_DECREF(i); i = t;
  if (PyObject_IsTrue(i)) VALERR("out of range");
  SET64(*(kludge64 *)pp, hi, lo);
  rc = 1;
end:
  if (i) Py_DECREF(i);
  return (rc);
}

int convmpw(PyObject *o, void *pp)
{
  unsigned long u;
  unsigned *p = pp;

  if (!convulong(o, &u)) goto end;
  if (u > MPW_MAX) VALERR("out of range");
  *p = u;
  return (1);
end:
  return (0);
}

int convszt(PyObject *o, void *pp)
{
  unsigned long u;
  size_t *p = pp;

  if (!convulong(o, &u)) goto end;
  if (u > ~(size_t)0) VALERR("out of range");
  *p = u;
  return (1);
end:
  return (0);
}

int convbool(PyObject *o, void *pp)
{
  if (!o) VALERR("can't delete");
  *(int *)pp = PyObject_IsTrue(o);
  return (1);
end:
  return (0);
}

/*----- Type messing ------------------------------------------------------*/

static const PyTypeObject emptytype = { 0 };

void *newtype(PyTypeObject *metaty,
	      const PyTypeObject *skel,
	      const char *name)
{
  PyHeapTypeObject *ty =
    (PyHeapTypeObject *)_PyObject_GC_Malloc(_PyObject_VAR_SIZE(metaty, 0));
  if (!skel) skel = &emptytype;
  memcpy(ty, skel, sizeof(*skel));
  if (ty->ht_type.tp_base) Py_INCREF(ty->ht_type.tp_base);
#define COPY(blah) do {							\
    if (ty->ht_type.tp_as_##blah) {					\
      memcpy(&ty->as_##blah,						\
	     ty->ht_type.tp_as_##blah,					\
	     sizeof(ty->as_##blah));					\
      ty->ht_type.tp_as_##blah = &ty->as_##blah;			\
    }									\
  } while (0)
  COPY(number);
  COPY(sequence);
  COPY(mapping);
  COPY(buffer);
#undef COPY
  if (name)
    ty->ht_name = PyString_FromString(name);
  else if (ty->ht_type.tp_name)
    ty->ht_name = PyString_FromString(ty->ht_type.tp_name);
  if (ty->ht_name)
    ty->ht_type.tp_name = PyString_AS_STRING(ty->ht_name);
  DISCARD(PyObject_INIT(&ty->ht_type, metaty));
  Py_INCREF(metaty);
  return (ty);
}

void typeready(PyTypeObject *ty)
{
  PyType_Ready(ty);
  PyDict_SetItemString(ty->tp_dict, "__module__", modname);
}

PyTypeObject *inittype(PyTypeObject *tyskel, PyTypeObject *meta)
{
  PyTypeObject *ty = newtype(meta, tyskel, 0);
  ty->tp_flags |= Py_TPFLAGS_HEAPTYPE;
  typeready(ty);
  return (ty);
}

/*----- Constants ---------------------------------------------------------*/

void setconstants(PyObject *mod, const struct nameval *c)
{
  PyObject *x;

  while (c->name) {
    if (c->value > LONG_MAX)
      x = PyLong_FromUnsignedLong(c->value);
    else
      x = PyInt_FromLong(c->value);
    PyModule_AddObject(mod, (/*unconst*/ char *)c->name, x);
    c++;
  }
}

/*----- Building method tables --------------------------------------------*/

DA_DECL(method_v, PyMethodDef);
static method_v global_pymethods = DA_INIT;
void addmethods(const PyMethodDef *m)
{
  size_t n;

  for (n = 0; m[n].ml_name; n++);
  DA_ENSURE(&global_pymethods, n);
  memcpy(DA(&global_pymethods) + DA_LEN(&global_pymethods),
	 m, n * sizeof(*m));
  DA_EXTEND(&global_pymethods, n);
}

PyMethodDef *donemethods(void)
{
  static const PyMethodDef mzero = { 0 };
  DA_PUSH(&global_pymethods, mzero);
  return (DA(&global_pymethods));
}

/*----- Exceptions --------------------------------------------------------*/

PyObject *mkexc(PyObject *mod, PyObject *base,
		const char *name, PyMethodDef *mm)
{
  PyObject *nameobj = 0;
  PyObject *dict = 0;
  PyObject *exc = 0;
  PyObject *func = 0;
  PyObject *meth = 0;

  if ((nameobj = PyString_FromFormat("%s.%s",
				     PyModule_GetName(mod),
				     name)) == 0 ||
      (dict = PyDict_New()) == 0 ||
      (exc = PyErr_NewException(PyString_AS_STRING(nameobj),
				base, dict)) == 0)
    goto fail;

  if (mm) {
    while (mm->ml_name) {
      if ((func = PyCFunction_NewEx(mm, 0, mod)) == 0 ||
	  (meth = PyMethod_New(func, 0, exc)) == 0 ||
	  PyDict_SetItemString(dict, mm->ml_name, meth))
	goto fail;
      Py_DECREF(func); func = 0;
      Py_DECREF(meth); meth = 0;
      mm++;
    }
  }

done:
  Py_XDECREF(nameobj);
  Py_XDECREF(dict);
  return (exc);

fail:
  Py_XDECREF(exc);
  Py_XDECREF(func);
  Py_XDECREF(meth);
  exc = 0;
  goto done;
}

/*----- Generic dictionary methods ----------------------------------------*/

static PyTypeObject *itemiter_pytype, *valiter_pytype;

typedef struct iter_pyobj {
  PyObject_HEAD
  PyObject *map;
  PyObject *i;
} iter_pyobj;
#define ITER_MAP(o) (((iter_pyobj *)(o))->map)
#define ITER_I(o) (((iter_pyobj *)(o))->i)

static void iter_pydealloc(PyObject *me)
  { Py_DECREF(ITER_MAP(me)); Py_DECREF(ITER_I(me)); FREEOBJ(me); }

static PyObject *itemiter_pynext(PyObject *me)
{
  PyObject *k = 0, *v = 0, *rc = 0;

  if ((k = PyIter_Next(ITER_I(me))) != 0 &&
      (v = PyObject_GetItem(ITER_MAP(me), k)) != 0)
    rc = Py_BuildValue("(OO)", k, v);
  Py_XDECREF(k); Py_XDECREF(v);
  return (rc);
}

static PyTypeObject itemiter_pytype_skel = {
  PyObject_HEAD_INIT(0) 0,		/* Header */
  "ItemIter",				/* @tp_name@ */
  sizeof(iter_pyobj),			/* @tp_basicsize@ */
  0,					/* @tp_itemsize@ */

  iter_pydealloc,			/* @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@ */
  0,					/* @tp_getattro@ */
  0,					/* @tp_setattro@ */
  0,					/* @tp_as_buffer@ */
  Py_TPFLAGS_DEFAULT |			/* @tp_flags@ */
    Py_TPFLAGS_BASETYPE,

  /* @tp_doc@ */
"Iterates over the items of a mapping.",

  0,					/* @tp_traverse@ */
  0,					/* @tp_clear@ */
  0,					/* @tp_richcompare@ */
  0,					/* @tp_weaklistoffset@ */
  PyObject_SelfIter,			/* @tp_iter@ */
  itemiter_pynext,			/* @tp_iternext@ */
  0,					/* @tp_methods@ */
  0,					/* @tp_members@ */
  0,					/* @tp_getset@ */
  0,					/* @tp_base@ */
  0,					/* @tp_dict@ */
  0,					/* @tp_descr_get@ */
  0,					/* @tp_descr_set@ */
  0,					/* @tp_dictoffset@ */
  0,					/* @tp_init@ */
  PyType_GenericAlloc,			/* @tp_alloc@ */
  abstract_pynew,			/* @tp_new@ */
  0,					/* @tp_free@ */
  0					/* @tp_is_gc@ */
};

static PyObject *valiter_pynext(PyObject *me)
{
  PyObject *k = 0, *rc = 0;

  if ((k = PyIter_Next(ITER_I(me))) != 0)
    rc = PyObject_GetItem(ITER_MAP(me), k);
  Py_XDECREF(k);
  return (rc);
}

static PyTypeObject valiter_pytype_skel = {
  PyObject_HEAD_INIT(0) 0,		/* Header */
  "ValueIter",				/* @tp_name@ */
  sizeof(iter_pyobj),			/* @tp_basicsize@ */
  0,					/* @tp_itemsize@ */

  iter_pydealloc,			/* @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@ */
  0,					/* @tp_getattro@ */
  0,					/* @tp_setattro@ */
  0,					/* @tp_as_buffer@ */
  Py_TPFLAGS_DEFAULT |			/* @tp_flags@ */
    Py_TPFLAGS_BASETYPE,

  /* @tp_doc@ */
"Iterates over the items of a mapping.",

  0,					/* @tp_traverse@ */
  0,					/* @tp_clear@ */
  0,					/* @tp_richcompare@ */
  0,					/* @tp_weaklistoffset@ */
  PyObject_SelfIter,			/* @tp_iter@ */
  valiter_pynext,			/* @tp_iternext@ */
  0,					/* @tp_methods@ */
  0,					/* @tp_members@ */
  0,					/* @tp_getset@ */
  0,					/* @tp_base@ */
  0,					/* @tp_dict@ */
  0,					/* @tp_descr_get@ */
  0,					/* @tp_descr_set@ */
  0,					/* @tp_dictoffset@ */
  0,					/* @tp_init@ */
  PyType_GenericAlloc,			/* @tp_alloc@ */
  abstract_pynew,			/* @tp_new@ */
  0,					/* @tp_free@ */
  0					/* @tp_is_gc@ */
};

PySequenceMethods gmap_pysequence = {
  0,					/* @sq_length@ */
  0,					/* @sq_concat@ */
  0,					/* @sq_repeat@ */
  0,					/* @sq_item@ */
  0,					/* @sq_slice@ */
  0,					/* @sq_ass_item@ */
  0,					/* @sq_ass_slice@ */
  PyMapping_HasKey,			/* @sq_contains@ */
  0,					/* @sq_inplace_concat@ */
  0					/* @sq_inplace_repeat@ */
};

Py_ssize_t gmap_pysize(PyObject *me)
{
  PyObject *i = 0, *x = 0;
  int rc = -1;
  int n = 0;

  if ((i = PyObject_GetIter(me)) == 0) goto done;
  while ((x = PyIter_Next(i)) != 0) { n++; Py_DECREF(x); x = 0; }
  if (PyErr_Occurred()) goto done;
  rc = n;
done:
  Py_XDECREF(i); Py_XDECREF(x);
  return (rc);
}

PyObject *gmapmeth_has_key(PyObject *me, PyObject *arg)
{
  PyObject *k;
  if (!PyArg_ParseTuple(arg, "O:has_key", &k)) return (0);
  return (getbool(PyMapping_HasKey(me, k)));
}

PyObject *gmapmeth_keys(PyObject *me, PyObject *arg)
{
  PyObject *l = 0, *i = 0, *k, *rc = 0;
  int err;

  if (!PyArg_ParseTuple(arg, ":keys") ||
      (l = PyList_New(0)) == 0 ||
      (i = PyObject_GetIter(me)) == 0)
    goto done;
  while ((k = PyIter_Next(i)) != 0)
    { err = PyList_Append(l, k); Py_DECREF(k); if (err) goto done; }
  if (PyErr_Occurred()) goto done;
  rc = l; l = 0;
done:
  Py_XDECREF(l); Py_XDECREF(i);
  return (rc);
}

PyObject *gmapmeth_values(PyObject *me, PyObject *arg)
{
  PyObject *l = 0, *i = 0, *k, *v, *rc = 0;
  int err = 0;

  if (!PyArg_ParseTuple(arg, ":values") ||
      (l = PyList_New(0)) == 0 ||
      (i = PyObject_GetIter(me)) == 0)
    goto done;
  while ((k = PyIter_Next(i)) != 0) {
    if ((v = PyObject_GetItem(me, k)) == 0 ||
	PyList_Append(l, v))
      err = -1;
    Py_DECREF(k); Py_XDECREF(v);
    if (err) goto done;
  }
  if (PyErr_Occurred()) goto done;
  rc = l; l = 0;
done:
  Py_XDECREF(l); Py_XDECREF(i);
  return (rc);
}

PyObject *gmapmeth_items(PyObject *me, PyObject *arg)
{
  PyObject *l = 0, *i = 0, *k, *v, *z, *rc = 0;
  int err = 0;

  if (!PyArg_ParseTuple(arg, ":items") ||
      (l = PyList_New(0)) == 0 ||
      (i = PyObject_GetIter(me)) == 0)
    goto done;
  while ((k = PyIter_Next(i)) != 0) {
    z = 0;
    if ((v = PyObject_GetItem(me, k)) == 0 ||
	(z = Py_BuildValue("(OO)", k, v)) == 0 ||
	PyList_Append(l, z))
      err = -1;
    Py_DECREF(k); Py_XDECREF(v); Py_XDECREF(z);
    if (err) goto done;
  }
  if (PyErr_Occurred()) goto done;
  rc = l; l = 0;
done:
  Py_XDECREF(l); Py_XDECREF(i);
  return (rc);
}

PyObject *gmapmeth_iterkeys(PyObject *me, PyObject *arg)
{
  if (!PyArg_ParseTuple(arg, ":iterkeys")) return (0);
  return (PyObject_GetIter(me));
}

PyObject *gmapmeth_itervalues(PyObject *me, PyObject *arg)
{
  PyObject *i;
  iter_pyobj *ii;

  if (!PyArg_ParseTuple(arg, ":itervalues") ||
      (i = PyObject_GetIter(me)) == 0)
    return (0);
  ii = PyObject_NEW(iter_pyobj, valiter_pytype);
  ii->map = me; Py_INCREF(me);
  ii->i = i;
  return ((PyObject *)ii);
}

PyObject *gmapmeth_iteritems(PyObject *me, PyObject *arg)
{
  PyObject *i;
  iter_pyobj *ii;

  if (!PyArg_ParseTuple(arg, ":iteritems") ||
      (i = PyObject_GetIter(me)) == 0)
    return (0);
  ii = PyObject_NEW(iter_pyobj, itemiter_pytype);
  ii->map = me; Py_INCREF(me);
  ii->i = i;
  return ((PyObject *)ii);
}

PyObject *gmapmeth_clear(PyObject *me, PyObject *arg)
{
  PyObject *i = 0, *k = 0, *rc = 0;

  if (!PyArg_ParseTuple(arg, ":clear") ||
      (i = PyObject_GetIter(me)) == 0)
    goto end;
  while ((k = PyIter_Next(i)) != 0) {
    PyObject_DelItem(me, k);
    Py_DECREF(k);
  }
  if (PyErr_Occurred()) goto end;
  rc = me; Py_INCREF(me);
end:
  Py_XDECREF(i);
  return (rc);
}

static const char *const def_kwlist[] = { "key", "default", 0 };

PyObject *gmapmeth_get(PyObject *me, PyObject *arg, PyObject *kw)
{
  PyObject *k, *def = Py_None, *v;

  if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:get",
				   (/*unconst*/ char **)def_kwlist,
				   &k, &def))
    return (0);
  if ((v = PyObject_GetItem(me, k)) != 0) return (v);
  PyErr_Clear();
  RETURN_OBJ(def);
}

PyObject *gmapmeth_setdefault(PyObject *me, PyObject *arg, PyObject *kw)
{
  PyObject *k, *def = Py_None, *v;

  if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:setdefault",
				   (/*unconst*/ char **)def_kwlist,
				   &k, &def))
    return (0);
  if ((v = PyObject_GetItem(me, k)) != 0) return (v);
  PyErr_Clear();
  if (PyObject_SetItem(me, k, def)) return (0);
  RETURN_OBJ(def);
}

PyObject *gmapmeth_pop(PyObject *me, PyObject *arg, PyObject *kw)
{
  PyObject *k, *def = 0, *v;

  if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:pop",
				   (/*unconst*/ char **)def_kwlist,
				   &k, &def))
    return (0);
  if ((v = PyObject_GetItem(me, k)) != 0) {
    PyObject_DelItem(me, k);
    return (v);
  }
  PyErr_Clear();
  RETURN_OBJ(def);
}

PyObject *gmapmeth_update(PyObject *me, PyObject *arg)
{
  PyObject *map, *i = 0, *k, *v, *rc = 0;
  int err = 0;

  if (!PyArg_ParseTuple(arg, "O:update", &map) ||
      (i = PyObject_GetIter(map)) == 0)
    goto end;
  while ((k = PyIter_Next(i)) != 0) {
    if ((v = PyObject_GetItem(map, k)) == 0 ||
	PyObject_SetItem(me, k, v))
      err = -1;
    Py_DECREF(k); Py_XDECREF(v);
    if (err) goto end;
  }
  if (PyErr_Occurred()) goto end;
  rc = me; Py_INCREF(me);
end:
  Py_XDECREF(i);
  return (rc);
}

PyObject *gmapmeth_popitem(PyObject *me, PyObject *arg)
{
  PyObject *i = 0, *k = 0, *v = 0, *rc = 0;

  if (!PyArg_ParseTuple(arg, ":popitem") ||
      (i = PyObject_GetIter(me)))
    goto end;
  if ((k = PyIter_Next(i)) == 0) {
    if (!PyErr_Occurred()) VALERR("popitem(): mapping is empty");
    goto end;
  }
  if ((v = PyObject_GetItem(me, k)) == 0 ||
      PyObject_DelItem(me, k))
    goto end;
  rc = Py_BuildValue("(OO)", k, v);
end:
  Py_XDECREF(i); Py_XDECREF(k); Py_XDECREF(v);
  return (rc);
}

PyMethodDef gmap_pymethods[] = {
  GMAP_METHODS
  { 0 }
};

/*----- Initialization ----------------------------------------------------*/

void util_pyinit(void)
{
  modname = PyString_FromString("catacomb");
  INITTYPE(itemiter, root);
  INITTYPE(valiter, root);
}

void util_pyinsert(PyObject *mod)
{
  INSERT("ItemIter", itemiter_pytype);
  INSERT("ValueIter", valiter_pytype);
}

/*----- That's all, folks -------------------------------------------------*/
Commit	Line	Data
68ec53f3 MW	1	/* --c--
68ec53f3 MW	2	*
68ec53f3 MW	3	* Miscellaneous utilities (not Catacomb-specific)
	4	*
	5	* (c) 2005 Straylight/Edgeware
	6	*/
	7
0b1eafbf	8	/----- Licensing notice --------------------------------------------------
68ec53f3 MW	9	*
	10	* This file is part of the Python interface to Catacomb.
	11	*
	12	* Catacomb/Python is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License as published by
	14	* the Free Software Foundation; either version 2 of the License, or
	15	* (at your option) any later version.
0b1eafbf	16	*
68ec53f3 MW	17	* Catacomb/Python is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
0b1eafbf	21	*
68ec53f3 MW	22	* You should have received a copy of the GNU General Public License
	23	* along with Catacomb/Python; if not, write to the Free Software Foundation,
	24	* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	25	*/
	26
	27	/----- Header files ------------------------------------------------------/
	28
	29	#include "catacomb-python.h"
	30
0156e402 MW	31	/----- External values ---------------------------------------------------/
	32
	33	static PyObject *modname = 0;
	34
68ec53f3 MW	35	/----- Conversions -------------------------------------------------------/
68ec53f3 MW	36
1e082a86 MW	37	PyObject *getulong(unsigned long w)
1e082a86 MW	38	{
4f3d0934	39	if (w <= LONG_MAX)
1e082a86 MW	40	return (PyInt_FromLong(w));
	41	else
	42	return (PyLong_FromUnsignedLong(w));
	43	}
68ec53f3	44
1b6734b6 MW	45	static PyObject *i32 = 0;
	46	static int init_i32(void)
	47	{ if (!i32 && (i32 = PyInt_FromLong(32)) == 0) return (-1); return (0); }
	48
	49	PyObject *getk64(kludge64 u)
	50	{
	51	PyObject i = 0, j = 0, *t;
	52	PyObject *rc = 0;
	53
	54	if (init_i32()) goto end;
	55	if ((i = PyLong_FromUnsignedLong(HI64(u))) == 0) goto end;
	56	if ((t = PyNumber_InPlaceLshift(i, i32)) == 0) goto end;
	57	Py_DECREF(i); i = t;
	58	if ((j = PyLong_FromUnsignedLong(LO64(u))) == 0) goto end;
	59	if ((t = PyNumber_InPlaceOr(i, j)) == 0) goto end;
	60	Py_DECREF(i); i = t;
	61	if ((rc = PyNumber_Int(i)) == 0) goto end;
	62	end:
	63	if (i) Py_DECREF(i);
	64	if (j) Py_DECREF(j);
	65	return (rc);
	66	}
	67
68ec53f3 MW	68	PyObject *getbool(int b)
	69	{
	70	if (b) RETURN_TRUE;
	71	else RETURN_FALSE;
	72	}
	73
	74	PyObject abstract_pynew(PyTypeObject ty, PyObject arg, PyObject kw)
	75	{
	76	PyErr_SetString(PyExc_TypeError, "can't instantiate this class");
	77	return (0);
	78	}
	79
	80	int convulong(PyObject o, void pp)
	81	{
	82	long i;
	83	unsigned long *p = pp;
	84	PyObject *t;
	85
c0ddcbac	86	if (!o) VALERR("can't delete");
68ec53f3 MW	87	if (PyInt_Check(o)) {
68ec53f3 MW	88	i = PyInt_AS_LONG(o);
799dffb2	89	if (i < 0) VALERR("must be nonnegative");
68ec53f3 MW	90	*p = i;
	91	} else {
	92	if ((t = PyNumber_Long(o)) == 0) goto end;
	93	*p = PyLong_AsUnsignedLong(t);
	94	Py_DECREF(t);
	95	if (PyErr_Occurred()) goto end;
	96	}
	97	return (1);
	98	end:
	99	return (0);
	100	}
	101
	102	#define CONVU_(n) \
	103	int convu##n(PyObject o, void pp) \
	104	{ \
	105	unsigned long u; \
	106	uint##n *p = pp; \
	107	\
	108	if (!convulong(o, &u)) goto end; \
799dffb2	109	if (u > MASK##n) VALERR("out of range"); \
68ec53f3 MW	110	*p = u; \
	111	return (1); \
	112	end: \
	113	return (0); \
	114	}
	115	DOUINTSZ(CONVU_)
	116
	117	int convuint(PyObject o, void pp)
	118	{
	119	unsigned long u;
	120	unsigned *p = pp;
	121
	122	if (!convulong(o, &u)) goto end;
799dffb2	123	if (u > UINT_MAX) VALERR("out of range");
68ec53f3 MW	124	*p = u;
	125	return (1);
	126	end:
	127	return (0);
	128	}
	129
1b6734b6 MW	130	int convk64(PyObject o, void pp)
	131	{
	132	PyObject i = 0, t;
	133	int rc = 0;
	134	uint32 lo, hi;
	135
2ed3b508	136	if (!o) VALERR("can't delete");
1b6734b6 MW	137	if (init_i32()) goto end;
	138	if ((i = PyNumber_Int(o)) == 0) goto end;
	139	lo = PyInt_AsUnsignedLongMask(i);
	140	if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end;
	141	Py_DECREF(i); i = t;
	142	hi = PyInt_AsUnsignedLongMask(i);
	143	if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end;
	144	Py_DECREF(i); i = t;
	145	if (PyObject_IsTrue(i)) VALERR("out of range");
	146	SET64((kludge64 )pp, hi, lo);
	147	rc = 1;
	148	end:
	149	if (i) Py_DECREF(i);
	150	return (rc);
	151	}
	152
68ec53f3 MW	153	int convmpw(PyObject o, void pp)
	154	{
	155	unsigned long u;
	156	unsigned *p = pp;
	157
	158	if (!convulong(o, &u)) goto end;
799dffb2	159	if (u > MPW_MAX) VALERR("out of range");
68ec53f3 MW	160	*p = u;
	161	return (1);
	162	end:
	163	return (0);
	164	}
	165
	166	int convszt(PyObject o, void pp)
	167	{
	168	unsigned long u;
	169	size_t *p = pp;
	170
	171	if (!convulong(o, &u)) goto end;
799dffb2	172	if (u > ~(size_t)0) VALERR("out of range");
68ec53f3 MW	173	*p = u;
	174	return (1);
	175	end:
	176	return (0);
	177	}
	178
	179	int convbool(PyObject o, void pp)
	180	{
c0ddcbac	181	if (!o) VALERR("can't delete");
68ec53f3 MW	182	(int )pp = PyObject_IsTrue(o);
68ec53f3 MW	183	return (1);
c0ddcbac MW	184	end:
c0ddcbac MW	185	return (0);
68ec53f3 MW	186	}
	187
	188	/----- Type messing ------------------------------------------------------/
	189
	190	static const PyTypeObject emptytype = { 0 };
	191
	192	void newtype(PyTypeObject metaty,
	193	const PyTypeObject *skel,
	194	const char *name)
	195	{
	196	PyHeapTypeObject *ty =
	197	(PyHeapTypeObject *)_PyObject_GC_Malloc(_PyObject_VAR_SIZE(metaty, 0));
	198	if (!skel) skel = &emptytype;
	199	memcpy(ty, skel, sizeof(*skel));
d4a9e7e7	200	if (ty->ht_type.tp_base) Py_INCREF(ty->ht_type.tp_base);
68ec53f3	201	#define COPY(blah) do { \
d4a9e7e7	202	if (ty->ht_type.tp_as_##blah) { \
68ec53f3	203	memcpy(&ty->as_##blah, \
d4a9e7e7	204	ty->ht_type.tp_as_##blah, \
68ec53f3	205	sizeof(ty->as_##blah)); \
d4a9e7e7	206	ty->ht_type.tp_as_##blah = &ty->as_##blah; \
68ec53f3 MW	207	} \
	208	} while (0)
	209	COPY(number);
	210	COPY(sequence);
	211	COPY(mapping);
	212	COPY(buffer);
	213	#undef COPY
	214	if (name)
d4a9e7e7 MW	215	ty->ht_name = PyString_FromString(name);
	216	else if (ty->ht_type.tp_name)
	217	ty->ht_name = PyString_FromString(ty->ht_type.tp_name);
	218	if (ty->ht_name)
	219	ty->ht_type.tp_name = PyString_AS_STRING(ty->ht_name);
f60b520f	220	DISCARD(PyObject_INIT(&ty->ht_type, metaty));
68ec53f3 MW	221	Py_INCREF(metaty);
	222	return (ty);
	223	}
	224
0156e402 MW	225	void typeready(PyTypeObject *ty)
	226	{
	227	PyType_Ready(ty);
	228	PyDict_SetItemString(ty->tp_dict, "__module__", modname);
	229	}
	230
017d5f65	231	PyTypeObject inittype(PyTypeObject tyskel, PyTypeObject *meta)
68ec53f3	232	{
017d5f65	233	PyTypeObject *ty = newtype(meta, tyskel, 0);
68ec53f3	234	ty->tp_flags \|= Py_TPFLAGS_HEAPTYPE;
0156e402	235	typeready(ty);
68ec53f3 MW	236	return (ty);
	237	}
	238
	239	/----- Constants ---------------------------------------------------------/
	240
	241	void setconstants(PyObject mod, const struct nameval c)
	242	{
	243	PyObject *x;
	244
	245	while (c->name) {
	246	if (c->value > LONG_MAX)
	247	x = PyLong_FromUnsignedLong(c->value);
	248	else
	249	x = PyInt_FromLong(c->value);
	250	PyModule_AddObject(mod, (/unconst/ char *)c->name, x);
	251	c++;
	252	}
	253	}
	254
	255	/----- Building method tables --------------------------------------------/
	256
	257	DA_DECL(method_v, PyMethodDef);
	258	static method_v global_pymethods = DA_INIT;
	259	void addmethods(const PyMethodDef *m)
	260	{
	261	size_t n;
	262
	263	for (n = 0; m[n].ml_name; n++);
	264	DA_ENSURE(&global_pymethods, n);
	265	memcpy(DA(&global_pymethods) + DA_LEN(&global_pymethods),
	266	m, n * sizeof(*m));
	267	DA_EXTEND(&global_pymethods, n);
	268	}
	269
	270	PyMethodDef *donemethods(void)
	271	{
	272	static const PyMethodDef mzero = { 0 };
	273	DA_PUSH(&global_pymethods, mzero);
	274	return (DA(&global_pymethods));
	275	}
	276
	277	/----- Exceptions --------------------------------------------------------/
	278
35c34efb MW	279	PyObject mkexc(PyObject mod, PyObject *base,
35c34efb MW	280	const char name, PyMethodDef mm)
68ec53f3 MW	281	{
	282	PyObject *nameobj = 0;
	283	PyObject *dict = 0;
	284	PyObject *exc = 0;
	285	PyObject *func = 0;
	286	PyObject *meth = 0;
	287
	288	if ((nameobj = PyString_FromFormat("%s.%s",
	289	PyModule_GetName(mod),
	290	name)) == 0 \|\|
	291	(dict = PyDict_New()) == 0 \|\|
	292	(exc = PyErr_NewException(PyString_AS_STRING(nameobj),
	293	base, dict)) == 0)
	294	goto fail;
	295
	296	if (mm) {
	297	while (mm->ml_name) {
	298	if ((func = PyCFunction_NewEx(mm, 0, mod)) == 0 \|\|
	299	(meth = PyMethod_New(func, 0, exc)) == 0 \|\|
	300	PyDict_SetItemString(dict, mm->ml_name, meth))
	301	goto fail;
	302	Py_DECREF(func); func = 0;
	303	Py_DECREF(meth); meth = 0;
	304	mm++;
	305	}
	306	}
	307
	308	done:
	309	Py_XDECREF(nameobj);
	310	Py_XDECREF(dict);
	311	return (exc);
	312
	313	fail:
	314	Py_XDECREF(exc);
	315	Py_XDECREF(func);
	316	Py_XDECREF(meth);
	317	exc = 0;
	318	goto done;
	319	}
	320
	321	/----- Generic dictionary methods ----------------------------------------/
	322
	323	static PyTypeObject itemiter_pytype, valiter_pytype;
	324
	325	typedef struct iter_pyobj {
	326	PyObject_HEAD
	327	PyObject *map;
	328	PyObject *i;
	329	} iter_pyobj;
	330	#define ITER_MAP(o) (((iter_pyobj *)(o))->map)
	331	#define ITER_I(o) (((iter_pyobj *)(o))->i)
	332
	333	static void iter_pydealloc(PyObject *me)
	334	{ Py_DECREF(ITER_MAP(me)); Py_DECREF(ITER_I(me)); FREEOBJ(me); }
	335
	336	static PyObject itemiter_pynext(PyObject me)
	337	{
	338	PyObject k = 0, v = 0, *rc = 0;
0b1eafbf	339
68ec53f3 MW	340	if ((k = PyIter_Next(ITER_I(me))) != 0 &&
	341	(v = PyObject_GetItem(ITER_MAP(me), k)) != 0)
	342	rc = Py_BuildValue("(OO)", k, v);
	343	Py_XDECREF(k); Py_XDECREF(v);
	344	return (rc);
	345	}
	346
	347	static PyTypeObject itemiter_pytype_skel = {
	348	PyObject_HEAD_INIT(0) 0, /* Header */
	349	"ItemIter", /* @tp_name@ */
	350	sizeof(iter_pyobj), /* @tp_basicsize@ */
	351	0, /* @tp_itemsize@ */
	352
	353	iter_pydealloc, /* @tp_dealloc@ */
	354	0, /* @tp_print@ */
	355	0, /* @tp_getattr@ */
	356	0, /* @tp_setattr@ */
	357	0, /* @tp_compare@ */
	358	0, /* @tp_repr@ */
	359	0, /* @tp_as_number@ */
	360	0, /* @tp_as_sequence@ */
	361	0, /* @tp_as_mapping@ */
	362	0, /* @tp_hash@ */
	363	0, /* @tp_call@ */
	364	0, /* @tp_str@ */
	365	0, /* @tp_getattro@ */
	366	0, /* @tp_setattro@ */
	367	0, /* @tp_as_buffer@ */
	368	Py_TPFLAGS_DEFAULT \| /* @tp_flags@ */
	369	Py_TPFLAGS_BASETYPE,
	370
	371	/* @tp_doc@ */
	372	"Iterates over the items of a mapping.",
	373
	374	0, /* @tp_traverse@ */
	375	0, /* @tp_clear@ */
	376	0, /* @tp_richcompare@ */
	377	0, /* @tp_weaklistoffset@ */
	378	PyObject_SelfIter, /* @tp_iter@ */
	379	itemiter_pynext, /* @tp_iternext@ */
	380	0, /* @tp_methods@ */
	381	0, /* @tp_members@ */
	382	0, /* @tp_getset@ */
	383	0, /* @tp_base@ */
	384	0, /* @tp_dict@ */
	385	0, /* @tp_descr_get@ */
	386	0, /* @tp_descr_set@ */
	387	0, /* @tp_dictoffset@ */
	388	0, /* @tp_init@ */
	389	PyType_GenericAlloc, /* @tp_alloc@ */
	390	abstract_pynew, /* @tp_new@ */
	391	0, /* @tp_free@ */
	392	0 /* @tp_is_gc@ */
	393	};
	394
	395	static PyObject valiter_pynext(PyObject me)
	396	{
	397	PyObject k = 0, rc = 0;
0b1eafbf	398
68ec53f3 MW	399	if ((k = PyIter_Next(ITER_I(me))) != 0)
	400	rc = PyObject_GetItem(ITER_MAP(me), k);
	401	Py_XDECREF(k);
	402	return (rc);
	403	}
	404
	405	static PyTypeObject valiter_pytype_skel = {
	406	PyObject_HEAD_INIT(0) 0, /* Header */
	407	"ValueIter", /* @tp_name@ */
	408	sizeof(iter_pyobj), /* @tp_basicsize@ */
	409	0, /* @tp_itemsize@ */
	410
	411	iter_pydealloc, /* @tp_dealloc@ */
	412	0, /* @tp_print@ */
	413	0, /* @tp_getattr@ */
	414	0, /* @tp_setattr@ */
	415	0, /* @tp_compare@ */
	416	0, /* @tp_repr@ */
	417	0, /* @tp_as_number@ */
	418	0, /* @tp_as_sequence@ */
	419	0, /* @tp_as_mapping@ */
	420	0, /* @tp_hash@ */
	421	0, /* @tp_call@ */
	422	0, /* @tp_str@ */
	423	0, /* @tp_getattro@ */
	424	0, /* @tp_setattro@ */
	425	0, /* @tp_as_buffer@ */
	426	Py_TPFLAGS_DEFAULT \| /* @tp_flags@ */
	427	Py_TPFLAGS_BASETYPE,
	428
	429	/* @tp_doc@ */
	430	"Iterates over the items of a mapping.",
	431
	432	0, /* @tp_traverse@ */
	433	0, /* @tp_clear@ */
	434	0, /* @tp_richcompare@ */
	435	0, /* @tp_weaklistoffset@ */
	436	PyObject_SelfIter, /* @tp_iter@ */
	437	valiter_pynext, /* @tp_iternext@ */
	438	0, /* @tp_methods@ */
	439	0, /* @tp_members@ */
	440	0, /* @tp_getset@ */
	441	0, /* @tp_base@ */
	442	0, /* @tp_dict@ */
	443	0, /* @tp_descr_get@ */
	444	0, /* @tp_descr_set@ */
	445	0, /* @tp_dictoffset@ */
	446	0, /* @tp_init@ */
	447	PyType_GenericAlloc, /* @tp_alloc@ */
	448	abstract_pynew, /* @tp_new@ */
	449	0, /* @tp_free@ */
	450	0 /* @tp_is_gc@ */
	451	};
	452
	453	PySequenceMethods gmap_pysequence = {
	454	0, /* @sq_length@ */
	455	0, /* @sq_concat@ */
	456	0, /* @sq_repeat@ */
	457	0, /* @sq_item@ */
	458	0, /* @sq_slice@ */
	459	0, /* @sq_ass_item@ */
	460	0, /* @sq_ass_slice@ */
	461	PyMapping_HasKey, /* @sq_contains@ */
	462	0, /* @sq_inplace_concat@ */
463	0 /* @sq_inplace_repeat@ */
0b1eafbf	464	};
68ec53f3	465
9d73ed80	466	Py_ssize_t gmap_pysize(PyObject *me)
68ec53f3 MW	467	{
	468	PyObject i = 0, x = 0;
	469	int rc = -1;
	470	int n = 0;
	471
	472	if ((i = PyObject_GetIter(me)) == 0) goto done;
	473	while ((x = PyIter_Next(i)) != 0) { n++; Py_DECREF(x); x = 0; }
	474	if (PyErr_Occurred()) goto done;
	475	rc = n;
	476	done:
	477	Py_XDECREF(i); Py_XDECREF(x);
	478	return (rc);
	479	}
	480
	481	PyObject gmapmeth_has_key(PyObject me, PyObject *arg)
	482	{
	483	PyObject *k;
	484	if (!PyArg_ParseTuple(arg, "O:has_key", &k)) return (0);
	485	return (getbool(PyMapping_HasKey(me, k)));
	486	}
	487
	488	PyObject gmapmeth_keys(PyObject me, PyObject *arg)
	489	{
	490	PyObject l = 0, i = 0, k, rc = 0;
	491	int err;
	492
	493	if (!PyArg_ParseTuple(arg, ":keys") \|\|
	494	(l = PyList_New(0)) == 0 \|\|
	495	(i = PyObject_GetIter(me)) == 0)
	496	goto done;
	497	while ((k = PyIter_Next(i)) != 0)
	498	{ err = PyList_Append(l, k); Py_DECREF(k); if (err) goto done; }
	499	if (PyErr_Occurred()) goto done;
	500	rc = l; l = 0;
	501	done:
	502	Py_XDECREF(l); Py_XDECREF(i);
	503	return (rc);
	504	}
	505
	506	PyObject gmapmeth_values(PyObject me, PyObject *arg)
	507	{
	508	PyObject l = 0, i = 0, k, v, *rc = 0;
	509	int err = 0;
	510
	511	if (!PyArg_ParseTuple(arg, ":values") \|\|
	512	(l = PyList_New(0)) == 0 \|\|
	513	(i = PyObject_GetIter(me)) == 0)
	514	goto done;
0b1eafbf	515	while ((k = PyIter_Next(i)) != 0) {
68ec53f3 MW	516	if ((v = PyObject_GetItem(me, k)) == 0 \|\|
	517	PyList_Append(l, v))
	518	err = -1;
	519	Py_DECREF(k); Py_XDECREF(v);
	520	if (err) goto done;
	521	}
	522	if (PyErr_Occurred()) goto done;
	523	rc = l; l = 0;
	524	done:
	525	Py_XDECREF(l); Py_XDECREF(i);
	526	return (rc);
	527	}
	528
	529	PyObject gmapmeth_items(PyObject me, PyObject *arg)
	530	{
	531	PyObject l = 0, i = 0, k, v, z, rc = 0;
	532	int err = 0;
	533
	534	if (!PyArg_ParseTuple(arg, ":items") \|\|
	535	(l = PyList_New(0)) == 0 \|\|
	536	(i = PyObject_GetIter(me)) == 0)
	537	goto done;
	538	while ((k = PyIter_Next(i)) != 0) {
	539	z = 0;
	540	if ((v = PyObject_GetItem(me, k)) == 0 \|\|
	541	(z = Py_BuildValue("(OO)", k, v)) == 0 \|\|
	542	PyList_Append(l, z))
	543	err = -1;
	544	Py_DECREF(k); Py_XDECREF(v); Py_XDECREF(z);
	545	if (err) goto done;
	546	}
	547	if (PyErr_Occurred()) goto done;
	548	rc = l; l = 0;
	549	done:
	550	Py_XDECREF(l); Py_XDECREF(i);
	551	return (rc);
	552	}
	553
	554	PyObject gmapmeth_iterkeys(PyObject me, PyObject *arg)
	555	{
	556	if (!PyArg_ParseTuple(arg, ":iterkeys")) return (0);
	557	return (PyObject_GetIter(me));
	558	}
	559
	560	PyObject gmapmeth_itervalues(PyObject me, PyObject *arg)
	561	{
	562	PyObject *i;
	563	iter_pyobj *ii;
	564
	565	if (!PyArg_ParseTuple(arg, ":itervalues") \|\|
	566	(i = PyObject_GetIter(me)) == 0)
	567	return (0);
	568	ii = PyObject_NEW(iter_pyobj, valiter_pytype);
	569	ii->map = me; Py_INCREF(me);
	570	ii->i = i;
	571	return ((PyObject *)ii);
	572	}
	573
	574	PyObject gmapmeth_iteritems(PyObject me, PyObject *arg)
	575	{
	576	PyObject *i;
	577	iter_pyobj *ii;
	578
	579	if (!PyArg_ParseTuple(arg, ":iteritems") \|\|
580	(i = PyObject_GetIter(me)) == 0)
581	return (0);
582	ii = PyObject_NEW(iter_pyobj, itemiter_pytype);
583	ii->map = me; Py_INCREF(me);
584	ii->i = i;
585	return ((PyObject *)ii);
586	}
587
588	PyObject gmapmeth_clear(PyObject me, PyObject *arg)
589	{
590	PyObject i = 0, k = 0, *rc = 0;
591
592	if (!PyArg_ParseTuple(arg, ":clear") \|\|
593	(i = PyObject_GetIter(me)) == 0)
594	goto end;
595	while ((k = PyIter_Next(i)) != 0) {
596	PyObject_DelItem(me, k);
597	Py_DECREF(k);
598	}
599	if (PyErr_Occurred()) goto end;
600	rc = me; Py_INCREF(me);
601	end:
602	Py_XDECREF(i);
603	return (rc);
604	}
605
0fed227d	606	static const char *const def_kwlist[] = { "key", "default", 0 };
68ec53f3 MW	607
	608	PyObject gmapmeth_get(PyObject me, PyObject arg, PyObject kw)
	609	{
	610	PyObject k, def = Py_None, *v;
	611
0fed227d MW	612	if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:get",
	613	(/unconst/ char **)def_kwlist,
	614	&k, &def))
68ec53f3 MW	615	return (0);
	616	if ((v = PyObject_GetItem(me, k)) != 0) return (v);
	617	PyErr_Clear();
	618	RETURN_OBJ(def);
	619	}
	620
	621	PyObject gmapmeth_setdefault(PyObject me, PyObject arg, PyObject kw)
	622	{
	623	PyObject k, def = Py_None, *v;
	624
	625	if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:setdefault",
0fed227d MW	626	(/unconst/ char **)def_kwlist,
0fed227d MW	627	&k, &def))
68ec53f3 MW	628	return (0);
	629	if ((v = PyObject_GetItem(me, k)) != 0) return (v);
	630	PyErr_Clear();
	631	if (PyObject_SetItem(me, k, def)) return (0);
	632	RETURN_OBJ(def);
	633	}
	634
	635	PyObject gmapmeth_pop(PyObject me, PyObject arg, PyObject kw)
	636	{
	637	PyObject k, def = 0, *v;
	638
0fed227d MW	639	if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:pop",
	640	(/unconst/ char **)def_kwlist,
	641	&k, &def))
68ec53f3 MW	642	return (0);
	643	if ((v = PyObject_GetItem(me, k)) != 0) {
	644	PyObject_DelItem(me, k);
	645	return (v);
	646	}
	647	PyErr_Clear();
	648	RETURN_OBJ(def);
	649	}
	650
	651	PyObject gmapmeth_update(PyObject me, PyObject *arg)
	652	{
	653	PyObject map, i = 0, k, v, *rc = 0;
	654	int err = 0;
	655
	656	if (!PyArg_ParseTuple(arg, "O:update", &map) \|\|
	657	(i = PyObject_GetIter(map)) == 0)
	658	goto end;
	659	while ((k = PyIter_Next(i)) != 0) {
	660	if ((v = PyObject_GetItem(map, k)) == 0 \|\|
	661	PyObject_SetItem(me, k, v))
	662	err = -1;
	663	Py_DECREF(k); Py_XDECREF(v);
	664	if (err) goto end;
	665	}
	666	if (PyErr_Occurred()) goto end;
	667	rc = me; Py_INCREF(me);
	668	end:
	669	Py_XDECREF(i);
	670	return (rc);
	671	}
	672
	673	PyObject gmapmeth_popitem(PyObject me, PyObject *arg)
	674	{
	675	PyObject i = 0, k = 0, v = 0, rc = 0;
	676
	677	if (!PyArg_ParseTuple(arg, ":popitem") \|\|
	678	(i = PyObject_GetIter(me)))
	679	goto end;
	680	if ((k = PyIter_Next(i)) == 0) {
	681	if (!PyErr_Occurred()) VALERR("popitem(): mapping is empty");
	682	goto end;
	683	}
	684	if ((v = PyObject_GetItem(me, k)) == 0 \|\|
	685	PyObject_DelItem(me, k))
	686	goto end;
	687	rc = Py_BuildValue("(OO)", k, v);
	688	end:
	689	Py_XDECREF(i); Py_XDECREF(k); Py_XDECREF(v);
	690	return (rc);
	691	}
	692
	693	PyMethodDef gmap_pymethods[] = {
	694	GMAP_METHODS
	695	{ 0 }
	696	};
	697
	698	/----- Initialization ----------------------------------------------------/
	699
8ca23175	700	void util_pyinit(void)
68ec53f3	701	{
0156e402	702	modname = PyString_FromString("catacomb");
68ec53f3 MW	703	INITTYPE(itemiter, root);
	704	INITTYPE(valiter, root);
	705	}
	706
8ca23175	707	void util_pyinsert(PyObject *mod)
68ec53f3 MW	708	{
	709	INSERT("ItemIter", itemiter_pytype);
	710	INSERT("ValueIter", valiter_pytype);
	711	}
	712
	713	/----- That's all, folks -------------------------------------------------/