[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"

/* #undef HAVE_LONG_LONG */

/*----- 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));
}

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

PyObject *getk64(kludge64 u)
{
#ifdef HAVE_LONG_LONG
  return (PyLong_FromUnsignedLongLong(GET64(unsigned PY_LONG_LONG, u)));
#else
  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);
#endif
}

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);
}

#ifdef HAVE_UINT64
#  define CONVu64(n) do {						\
     kludge64 k;							\
     uint64 t;								\
     if (!convk64(o, &k)) goto end;					\
     t = GET64(uint64, k);						\
     if (t > MASK##n) VALERR("out of range");				\
     *p = t;								\
   } while (0)
#else
#  define CONVu64(n) assert(!"shouldn't be possible")
#endif

#define CONVU_(n)							\
  int convu##n(PyObject *o, void *pp)					\
  {									\
    unsigned long u;							\
    uint##n *p = pp;							\
									\
    if (MASK##n > ULONG_MAX)						\
      CONVu64(n);							\
    else {								\
      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;
  int rc = 0;
#if HAVE_LONG_LONG
  unsigned PY_LONG_LONG t;
#else
  PyObject *t;
  uint32 lo, hi;
#endif

  if (!o) VALERR("can't delete");
#if HAVE_LONG_LONG
  if ((i = PyNumber_Long(o)) == 0) goto end;
  t = PyLong_AsUnsignedLongLong(i);
  if (t == (unsigned PY_LONG_LONG)-1 && PyErr_Occurred()) goto end;
  ASSIGN64(*(kludge64 *)pp, t);
#else
  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);
#endif
  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 keys 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 values 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 char *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", 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",
				   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", 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
8526bbd2 MW	31	/* #undef HAVE_LONG_LONG */
8526bbd2 MW	32
0156e402 MW	33	/----- External values ---------------------------------------------------/
	34
	35	static PyObject *modname = 0;
	36
68ec53f3 MW	37	/----- Conversions -------------------------------------------------------/
68ec53f3 MW	38
1e082a86 MW	39	PyObject *getulong(unsigned long w)
1e082a86 MW	40	{
4f3d0934	41	if (w <= LONG_MAX)
1e082a86 MW	42	return (PyInt_FromLong(w));
	43	else
	44	return (PyLong_FromUnsignedLong(w));
	45	}
68ec53f3	46
8526bbd2	47	#ifndef HAVE_LONG_LONG
1b6734b6 MW	48	static PyObject *i32 = 0;
	49	static int init_i32(void)
	50	{ if (!i32 && (i32 = PyInt_FromLong(32)) == 0) return (-1); return (0); }
8526bbd2	51	#endif
1b6734b6 MW	52
	53	PyObject *getk64(kludge64 u)
	54	{
8526bbd2 MW	55	#ifdef HAVE_LONG_LONG
	56	return (PyLong_FromUnsignedLongLong(GET64(unsigned PY_LONG_LONG, u)));
	57	#else
1b6734b6 MW	58	PyObject i = 0, j = 0, *t;
	59	PyObject *rc = 0;
	60
	61	if (init_i32()) goto end;
	62	if ((i = PyLong_FromUnsignedLong(HI64(u))) == 0) goto end;
	63	if ((t = PyNumber_InPlaceLshift(i, i32)) == 0) goto end;
	64	Py_DECREF(i); i = t;
	65	if ((j = PyLong_FromUnsignedLong(LO64(u))) == 0) goto end;
	66	if ((t = PyNumber_InPlaceOr(i, j)) == 0) goto end;
	67	Py_DECREF(i); i = t;
	68	if ((rc = PyNumber_Int(i)) == 0) goto end;
	69	end:
	70	if (i) Py_DECREF(i);
	71	if (j) Py_DECREF(j);
	72	return (rc);
8526bbd2	73	#endif
1b6734b6 MW	74	}
1b6734b6 MW	75
68ec53f3 MW	76	PyObject *getbool(int b)
	77	{
	78	if (b) RETURN_TRUE;
	79	else RETURN_FALSE;
	80	}
	81
	82	PyObject abstract_pynew(PyTypeObject ty, PyObject arg, PyObject kw)
	83	{
	84	PyErr_SetString(PyExc_TypeError, "can't instantiate this class");
	85	return (0);
	86	}
	87
	88	int convulong(PyObject o, void pp)
	89	{
	90	long i;
	91	unsigned long *p = pp;
	92	PyObject *t;
	93
c0ddcbac	94	if (!o) VALERR("can't delete");
68ec53f3 MW	95	if (PyInt_Check(o)) {
68ec53f3 MW	96	i = PyInt_AS_LONG(o);
799dffb2	97	if (i < 0) VALERR("must be nonnegative");
68ec53f3 MW	98	*p = i;
	99	} else {
	100	if ((t = PyNumber_Long(o)) == 0) goto end;
	101	*p = PyLong_AsUnsignedLong(t);
	102	Py_DECREF(t);
	103	if (PyErr_Occurred()) goto end;
	104	}
	105	return (1);
	106	end:
	107	return (0);
	108	}
	109
a6b5c54d MW	110	#ifdef HAVE_UINT64
	111	# define CONVu64(n) do { \
	112	kludge64 k; \
	113	uint64 t; \
	114	if (!convk64(o, &k)) goto end; \
	115	t = GET64(uint64, k); \
	116	if (t > MASK##n) VALERR("out of range"); \
	117	*p = t; \
	118	} while (0)
	119	#else
	120	# define CONVu64(n) assert(!"shouldn't be possible")
	121	#endif
	122
68ec53f3 MW	123	#define CONVU_(n) \
	124	int convu##n(PyObject o, void pp) \
	125	{ \
	126	unsigned long u; \
	127	uint##n *p = pp; \
	128	\
a6b5c54d MW	129	if (MASK##n > ULONG_MAX) \
	130	CONVu64(n); \
	131	else { \
	132	if (!convulong(o, &u)) goto end; \
	133	if (u > MASK##n) VALERR("out of range"); \
	134	*p = u; \
	135	} \
68ec53f3 MW	136	return (1); \
	137	end: \
	138	return (0); \
	139	}
	140	DOUINTSZ(CONVU_)
	141
	142	int convuint(PyObject o, void pp)
	143	{
	144	unsigned long u;
	145	unsigned *p = pp;
	146
	147	if (!convulong(o, &u)) goto end;
799dffb2	148	if (u > UINT_MAX) VALERR("out of range");
68ec53f3 MW	149	*p = u;
	150	return (1);
	151	end:
	152	return (0);
	153	}
	154
1b6734b6 MW	155	int convk64(PyObject o, void pp)
1b6734b6 MW	156	{
8526bbd2	157	PyObject *i = 0;
1b6734b6	158	int rc = 0;
8526bbd2 MW	159	#if HAVE_LONG_LONG
	160	unsigned PY_LONG_LONG t;
	161	#else
	162	PyObject *t;
1b6734b6	163	uint32 lo, hi;
8526bbd2	164	#endif
1b6734b6	165
2ed3b508	166	if (!o) VALERR("can't delete");
8526bbd2 MW	167	#if HAVE_LONG_LONG
	168	if ((i = PyNumber_Long(o)) == 0) goto end;
	169	t = PyLong_AsUnsignedLongLong(i);
	170	if (t == (unsigned PY_LONG_LONG)-1 && PyErr_Occurred()) goto end;
	171	ASSIGN64((kludge64 )pp, t);
	172	#else
1b6734b6 MW	173	if (init_i32()) goto end;
	174	if ((i = PyNumber_Int(o)) == 0) goto end;
	175	lo = PyInt_AsUnsignedLongMask(i);
	176	if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end;
	177	Py_DECREF(i); i = t;
	178	hi = PyInt_AsUnsignedLongMask(i);
	179	if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end;
	180	Py_DECREF(i); i = t;
	181	if (PyObject_IsTrue(i)) VALERR("out of range");
	182	SET64((kludge64 )pp, hi, lo);
8526bbd2	183	#endif
1b6734b6	184	rc = 1;
8526bbd2	185
1b6734b6 MW	186	end:
	187	if (i) Py_DECREF(i);
	188	return (rc);
	189	}
	190
68ec53f3 MW	191	int convmpw(PyObject o, void pp)
	192	{
	193	unsigned long u;
	194	unsigned *p = pp;
	195
	196	if (!convulong(o, &u)) goto end;
799dffb2	197	if (u > MPW_MAX) VALERR("out of range");
68ec53f3 MW	198	*p = u;
	199	return (1);
	200	end:
	201	return (0);
	202	}
	203
	204	int convszt(PyObject o, void pp)
	205	{
	206	unsigned long u;
	207	size_t *p = pp;
	208
	209	if (!convulong(o, &u)) goto end;
799dffb2	210	if (u > ~(size_t)0) VALERR("out of range");
68ec53f3 MW	211	*p = u;
	212	return (1);
	213	end:
	214	return (0);
	215	}
	216
	217	int convbool(PyObject o, void pp)
	218	{
c0ddcbac	219	if (!o) VALERR("can't delete");
68ec53f3 MW	220	(int )pp = PyObject_IsTrue(o);
68ec53f3 MW	221	return (1);
c0ddcbac MW	222	end:
c0ddcbac MW	223	return (0);
68ec53f3 MW	224	}
	225
	226	/----- Type messing ------------------------------------------------------/
	227
	228	static const PyTypeObject emptytype = { 0 };
	229
	230	void newtype(PyTypeObject metaty,
	231	const PyTypeObject *skel,
	232	const char *name)
	233	{
	234	PyHeapTypeObject *ty =
	235	(PyHeapTypeObject *)_PyObject_GC_Malloc(_PyObject_VAR_SIZE(metaty, 0));
	236	if (!skel) skel = &emptytype;
	237	memcpy(ty, skel, sizeof(*skel));
d4a9e7e7	238	if (ty->ht_type.tp_base) Py_INCREF(ty->ht_type.tp_base);
68ec53f3	239	#define COPY(blah) do { \
d4a9e7e7	240	if (ty->ht_type.tp_as_##blah) { \
68ec53f3	241	memcpy(&ty->as_##blah, \
d4a9e7e7	242	ty->ht_type.tp_as_##blah, \
68ec53f3	243	sizeof(ty->as_##blah)); \
d4a9e7e7	244	ty->ht_type.tp_as_##blah = &ty->as_##blah; \
68ec53f3 MW	245	} \
	246	} while (0)
	247	COPY(number);
	248	COPY(sequence);
	249	COPY(mapping);
	250	COPY(buffer);
	251	#undef COPY
	252	if (name)
d4a9e7e7 MW	253	ty->ht_name = PyString_FromString(name);
	254	else if (ty->ht_type.tp_name)
	255	ty->ht_name = PyString_FromString(ty->ht_type.tp_name);
	256	if (ty->ht_name)
	257	ty->ht_type.tp_name = PyString_AS_STRING(ty->ht_name);
f60b520f	258	DISCARD(PyObject_INIT(&ty->ht_type, metaty));
68ec53f3 MW	259	Py_INCREF(metaty);
	260	return (ty);
	261	}
	262
0156e402 MW	263	void typeready(PyTypeObject *ty)
	264	{
	265	PyType_Ready(ty);
	266	PyDict_SetItemString(ty->tp_dict, "__module__", modname);
	267	}
	268
017d5f65	269	PyTypeObject inittype(PyTypeObject tyskel, PyTypeObject *meta)
68ec53f3	270	{
017d5f65	271	PyTypeObject *ty = newtype(meta, tyskel, 0);
68ec53f3	272	ty->tp_flags \|= Py_TPFLAGS_HEAPTYPE;
0156e402	273	typeready(ty);
68ec53f3 MW	274	return (ty);
	275	}
	276
	277	/----- Constants ---------------------------------------------------------/
	278
	279	void setconstants(PyObject mod, const struct nameval c)
	280	{
	281	PyObject *x;
	282
	283	while (c->name) {
	284	if (c->value > LONG_MAX)
	285	x = PyLong_FromUnsignedLong(c->value);
	286	else
	287	x = PyInt_FromLong(c->value);
	288	PyModule_AddObject(mod, (/unconst/ char *)c->name, x);
	289	c++;
	290	}
	291	}
	292
	293	/----- Building method tables --------------------------------------------/
	294
	295	DA_DECL(method_v, PyMethodDef);
	296	static method_v global_pymethods = DA_INIT;
	297	void addmethods(const PyMethodDef *m)
	298	{
	299	size_t n;
	300
	301	for (n = 0; m[n].ml_name; n++);
	302	DA_ENSURE(&global_pymethods, n);
	303	memcpy(DA(&global_pymethods) + DA_LEN(&global_pymethods),
	304	m, n * sizeof(*m));
	305	DA_EXTEND(&global_pymethods, n);
	306	}
	307
	308	PyMethodDef *donemethods(void)
	309	{
	310	static const PyMethodDef mzero = { 0 };
	311	DA_PUSH(&global_pymethods, mzero);
	312	return (DA(&global_pymethods));
	313	}
	314
	315	/----- Exceptions --------------------------------------------------------/
	316
35c34efb MW	317	PyObject mkexc(PyObject mod, PyObject *base,
35c34efb MW	318	const char name, PyMethodDef mm)
68ec53f3 MW	319	{
	320	PyObject *nameobj = 0;
	321	PyObject *dict = 0;
	322	PyObject *exc = 0;
	323	PyObject *func = 0;
	324	PyObject *meth = 0;
	325
	326	if ((nameobj = PyString_FromFormat("%s.%s",
	327	PyModule_GetName(mod),
	328	name)) == 0 \|\|
	329	(dict = PyDict_New()) == 0 \|\|
	330	(exc = PyErr_NewException(PyString_AS_STRING(nameobj),
	331	base, dict)) == 0)
	332	goto fail;
	333
	334	if (mm) {
	335	while (mm->ml_name) {
	336	if ((func = PyCFunction_NewEx(mm, 0, mod)) == 0 \|\|
	337	(meth = PyMethod_New(func, 0, exc)) == 0 \|\|
	338	PyDict_SetItemString(dict, mm->ml_name, meth))
	339	goto fail;
	340	Py_DECREF(func); func = 0;
	341	Py_DECREF(meth); meth = 0;
	342	mm++;
	343	}
	344	}
	345
	346	done:
	347	Py_XDECREF(nameobj);
	348	Py_XDECREF(dict);
	349	return (exc);
	350
	351	fail:
	352	Py_XDECREF(exc);
	353	Py_XDECREF(func);
	354	Py_XDECREF(meth);
	355	exc = 0;
	356	goto done;
	357	}
	358
	359	/----- Generic dictionary methods ----------------------------------------/
	360
	361	static PyTypeObject itemiter_pytype, valiter_pytype;
	362
	363	typedef struct iter_pyobj {
	364	PyObject_HEAD
	365	PyObject *map;
	366	PyObject *i;
	367	} iter_pyobj;
	368	#define ITER_MAP(o) (((iter_pyobj *)(o))->map)
	369	#define ITER_I(o) (((iter_pyobj *)(o))->i)
	370
	371	static void iter_pydealloc(PyObject *me)
	372	{ Py_DECREF(ITER_MAP(me)); Py_DECREF(ITER_I(me)); FREEOBJ(me); }
	373
	374	static PyObject itemiter_pynext(PyObject me)
	375	{
	376	PyObject k = 0, v = 0, *rc = 0;
0b1eafbf	377
68ec53f3 MW	378	if ((k = PyIter_Next(ITER_I(me))) != 0 &&
	379	(v = PyObject_GetItem(ITER_MAP(me), k)) != 0)
	380	rc = Py_BuildValue("(OO)", k, v);
	381	Py_XDECREF(k); Py_XDECREF(v);
	382	return (rc);
	383	}
	384
	385	static PyTypeObject itemiter_pytype_skel = {
	386	PyObject_HEAD_INIT(0) 0, /* Header */
	387	"ItemIter", /* @tp_name@ */
	388	sizeof(iter_pyobj), /* @tp_basicsize@ */
	389	0, /* @tp_itemsize@ */
	390
	391	iter_pydealloc, /* @tp_dealloc@ */
	392	0, /* @tp_print@ */
	393	0, /* @tp_getattr@ */
	394	0, /* @tp_setattr@ */
	395	0, /* @tp_compare@ */
	396	0, /* @tp_repr@ */
	397	0, /* @tp_as_number@ */
	398	0, /* @tp_as_sequence@ */
	399	0, /* @tp_as_mapping@ */
	400	0, /* @tp_hash@ */
	401	0, /* @tp_call@ */
	402	0, /* @tp_str@ */
	403	0, /* @tp_getattro@ */
	404	0, /* @tp_setattro@ */
	405	0, /* @tp_as_buffer@ */
	406	Py_TPFLAGS_DEFAULT \| /* @tp_flags@ */
	407	Py_TPFLAGS_BASETYPE,
	408
	409	/* @tp_doc@ */
20ab4ff4	410	"Iterates over the keys of a mapping.",
68ec53f3 MW	411
	412	0, /* @tp_traverse@ */
	413	0, /* @tp_clear@ */
	414	0, /* @tp_richcompare@ */
	415	0, /* @tp_weaklistoffset@ */
	416	PyObject_SelfIter, /* @tp_iter@ */
	417	itemiter_pynext, /* @tp_iternext@ */
	418	0, /* @tp_methods@ */
	419	0, /* @tp_members@ */
	420	0, /* @tp_getset@ */
	421	0, /* @tp_base@ */
	422	0, /* @tp_dict@ */
	423	0, /* @tp_descr_get@ */
	424	0, /* @tp_descr_set@ */
	425	0, /* @tp_dictoffset@ */
	426	0, /* @tp_init@ */
	427	PyType_GenericAlloc, /* @tp_alloc@ */
	428	abstract_pynew, /* @tp_new@ */
	429	0, /* @tp_free@ */
	430	0 /* @tp_is_gc@ */
	431	};
	432
	433	static PyObject valiter_pynext(PyObject me)
	434	{
	435	PyObject k = 0, rc = 0;
0b1eafbf	436
68ec53f3 MW	437	if ((k = PyIter_Next(ITER_I(me))) != 0)
	438	rc = PyObject_GetItem(ITER_MAP(me), k);
	439	Py_XDECREF(k);
	440	return (rc);
	441	}
	442
	443	static PyTypeObject valiter_pytype_skel = {
	444	PyObject_HEAD_INIT(0) 0, /* Header */
	445	"ValueIter", /* @tp_name@ */
	446	sizeof(iter_pyobj), /* @tp_basicsize@ */
	447	0, /* @tp_itemsize@ */
	448
	449	iter_pydealloc, /* @tp_dealloc@ */
	450	0, /* @tp_print@ */
	451	0, /* @tp_getattr@ */
	452	0, /* @tp_setattr@ */
	453	0, /* @tp_compare@ */
	454	0, /* @tp_repr@ */
	455	0, /* @tp_as_number@ */
	456	0, /* @tp_as_sequence@ */
	457	0, /* @tp_as_mapping@ */
	458	0, /* @tp_hash@ */
	459	0, /* @tp_call@ */
	460	0, /* @tp_str@ */
	461	0, /* @tp_getattro@ */
	462	0, /* @tp_setattro@ */
	463	0, /* @tp_as_buffer@ */
	464	Py_TPFLAGS_DEFAULT \| /* @tp_flags@ */
	465	Py_TPFLAGS_BASETYPE,
	466
	467	/* @tp_doc@ */
20ab4ff4	468	"Iterates over the values of a mapping.",
68ec53f3 MW	469
	470	0, /* @tp_traverse@ */
	471	0, /* @tp_clear@ */
	472	0, /* @tp_richcompare@ */
	473	0, /* @tp_weaklistoffset@ */
	474	PyObject_SelfIter, /* @tp_iter@ */
	475	valiter_pynext, /* @tp_iternext@ */
	476	0, /* @tp_methods@ */
	477	0, /* @tp_members@ */
	478	0, /* @tp_getset@ */
	479	0, /* @tp_base@ */
	480	0, /* @tp_dict@ */
	481	0, /* @tp_descr_get@ */
	482	0, /* @tp_descr_set@ */
	483	0, /* @tp_dictoffset@ */
	484	0, /* @tp_init@ */
	485	PyType_GenericAlloc, /* @tp_alloc@ */
	486	abstract_pynew, /* @tp_new@ */
	487	0, /* @tp_free@ */
	488	0 /* @tp_is_gc@ */
	489	};
	490
	491	PySequenceMethods gmap_pysequence = {
	492	0, /* @sq_length@ */
	493	0, /* @sq_concat@ */
	494	0, /* @sq_repeat@ */
	495	0, /* @sq_item@ */
	496	0, /* @sq_slice@ */
	497	0, /* @sq_ass_item@ */
	498	0, /* @sq_ass_slice@ */
	499	PyMapping_HasKey, /* @sq_contains@ */
	500	0, /* @sq_inplace_concat@ */
	501	0 /* @sq_inplace_repeat@ */
0b1eafbf	502	};
68ec53f3	503
9d73ed80	504	Py_ssize_t gmap_pysize(PyObject *me)
68ec53f3 MW	505	{
	506	PyObject i = 0, x = 0;
	507	int rc = -1;
	508	int n = 0;
	509
	510	if ((i = PyObject_GetIter(me)) == 0) goto done;
	511	while ((x = PyIter_Next(i)) != 0) { n++; Py_DECREF(x); x = 0; }
	512	if (PyErr_Occurred()) goto done;
	513	rc = n;
	514	done:
	515	Py_XDECREF(i); Py_XDECREF(x);
	516	return (rc);
	517	}
	518
	519	PyObject gmapmeth_has_key(PyObject me, PyObject *arg)
	520	{
	521	PyObject *k;
	522	if (!PyArg_ParseTuple(arg, "O:has_key", &k)) return (0);
	523	return (getbool(PyMapping_HasKey(me, k)));
	524	}
	525
	526	PyObject gmapmeth_keys(PyObject me, PyObject *arg)
	527	{
	528	PyObject l = 0, i = 0, k, rc = 0;
	529	int err;
	530
	531	if (!PyArg_ParseTuple(arg, ":keys") \|\|
	532	(l = PyList_New(0)) == 0 \|\|
	533	(i = PyObject_GetIter(me)) == 0)
	534	goto done;
	535	while ((k = PyIter_Next(i)) != 0)
	536	{ err = PyList_Append(l, k); Py_DECREF(k); if (err) goto done; }
	537	if (PyErr_Occurred()) goto done;
	538	rc = l; l = 0;
	539	done:
	540	Py_XDECREF(l); Py_XDECREF(i);
	541	return (rc);
	542	}
	543
	544	PyObject gmapmeth_values(PyObject me, PyObject *arg)
	545	{
	546	PyObject l = 0, i = 0, k, v, *rc = 0;
	547	int err = 0;
	548
	549	if (!PyArg_ParseTuple(arg, ":values") \|\|
	550	(l = PyList_New(0)) == 0 \|\|
	551	(i = PyObject_GetIter(me)) == 0)
	552	goto done;
0b1eafbf	553	while ((k = PyIter_Next(i)) != 0) {
68ec53f3 MW	554	if ((v = PyObject_GetItem(me, k)) == 0 \|\|
	555	PyList_Append(l, v))
	556	err = -1;
	557	Py_DECREF(k); Py_XDECREF(v);
	558	if (err) goto done;
	559	}
	560	if (PyErr_Occurred()) goto done;
	561	rc = l; l = 0;
	562	done:
	563	Py_XDECREF(l); Py_XDECREF(i);
	564	return (rc);
	565	}
	566
	567	PyObject gmapmeth_items(PyObject me, PyObject *arg)
	568	{
	569	PyObject l = 0, i = 0, k, v, z, rc = 0;
	570	int err = 0;
	571
	572	if (!PyArg_ParseTuple(arg, ":items") \|\|
	573	(l = PyList_New(0)) == 0 \|\|
	574	(i = PyObject_GetIter(me)) == 0)
	575	goto done;
	576	while ((k = PyIter_Next(i)) != 0) {
	577	z = 0;
	578	if ((v = PyObject_GetItem(me, k)) == 0 \|\|
	579	(z = Py_BuildValue("(OO)", k, v)) == 0 \|\|
	580	PyList_Append(l, z))
	581	err = -1;
	582	Py_DECREF(k); Py_XDECREF(v); Py_XDECREF(z);
	583	if (err) goto done;
	584	}
	585	if (PyErr_Occurred()) goto done;
	586	rc = l; l = 0;
	587	done:
	588	Py_XDECREF(l); Py_XDECREF(i);
	589	return (rc);
	590	}
	591
	592	PyObject gmapmeth_iterkeys(PyObject me, PyObject *arg)
	593	{
	594	if (!PyArg_ParseTuple(arg, ":iterkeys")) return (0);
	595	return (PyObject_GetIter(me));
	596	}
	597
	598	PyObject gmapmeth_itervalues(PyObject me, PyObject *arg)
	599	{
	600	PyObject *i;
	601	iter_pyobj *ii;
	602
	603	if (!PyArg_ParseTuple(arg, ":itervalues") \|\|
	604	(i = PyObject_GetIter(me)) == 0)
	605	return (0);
	606	ii = PyObject_NEW(iter_pyobj, valiter_pytype);
	607	ii->map = me; Py_INCREF(me);
	608	ii->i = i;
	609	return ((PyObject *)ii);
	610	}
	611
	612	PyObject gmapmeth_iteritems(PyObject me, PyObject *arg)
	613	{
	614	PyObject *i;
	615	iter_pyobj *ii;
	616
	617	if (!PyArg_ParseTuple(arg, ":iteritems") \|\|
618	(i = PyObject_GetIter(me)) == 0)
619	return (0);
620	ii = PyObject_NEW(iter_pyobj, itemiter_pytype);
621	ii->map = me; Py_INCREF(me);
622	ii->i = i;
623	return ((PyObject *)ii);
624	}
625
626	PyObject gmapmeth_clear(PyObject me, PyObject *arg)
627	{
628	PyObject i = 0, k = 0, *rc = 0;
629
630	if (!PyArg_ParseTuple(arg, ":clear") \|\|
631	(i = PyObject_GetIter(me)) == 0)
632	goto end;
633	while ((k = PyIter_Next(i)) != 0) {
634	PyObject_DelItem(me, k);
635	Py_DECREF(k);
636	}
637	if (PyErr_Occurred()) goto end;
638	rc = me; Py_INCREF(me);
639	end:
640	Py_XDECREF(i);
641	return (rc);
642	}
643
644	static char *def_kwlist[] = { "key", "default", 0 };
645
646	PyObject gmapmeth_get(PyObject me, PyObject arg, PyObject kw)
647	{
648	PyObject k, def = Py_None, *v;
649
650	if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:get", def_kwlist, &k, &def))
651	return (0);
652	if ((v = PyObject_GetItem(me, k)) != 0) return (v);
653	PyErr_Clear();
654	RETURN_OBJ(def);
655	}
656
657	PyObject gmapmeth_setdefault(PyObject me, PyObject arg, PyObject kw)
658	{
659	PyObject k, def = Py_None, *v;
660
661	if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:setdefault",
662	def_kwlist, &k, &def))
663	return (0);
664	if ((v = PyObject_GetItem(me, k)) != 0) return (v);
665	PyErr_Clear();
666	if (PyObject_SetItem(me, k, def)) return (0);
667	RETURN_OBJ(def);
668	}
669
670	PyObject gmapmeth_pop(PyObject me, PyObject arg, PyObject kw)
671	{
672	PyObject k, def = 0, *v;
673
674	if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:pop", def_kwlist, &k, &def))
675	return (0);
676	if ((v = PyObject_GetItem(me, k)) != 0) {
677	PyObject_DelItem(me, k);
678	return (v);
679	}
680	PyErr_Clear();
681	RETURN_OBJ(def);
682	}
683
684	PyObject gmapmeth_update(PyObject me, PyObject *arg)
685	{
686	PyObject map, i = 0, k, v, *rc = 0;
687	int err = 0;
688
689	if (!PyArg_ParseTuple(arg, "O:update", &map) \|\|
690	(i = PyObject_GetIter(map)) == 0)
691	goto end;
692	while ((k = PyIter_Next(i)) != 0) {
693	if ((v = PyObject_GetItem(map, k)) == 0 \|\|
694	PyObject_SetItem(me, k, v))
695	err = -1;
696	Py_DECREF(k); Py_XDECREF(v);
697	if (err) goto end;
698	}
699	if (PyErr_Occurred()) goto end;
700	rc = me; Py_INCREF(me);
701	end:
702	Py_XDECREF(i);
703	return (rc);
704	}
705
706	PyObject gmapmeth_popitem(PyObject me, PyObject *arg)
707	{
708	PyObject i = 0, k = 0, v = 0, rc = 0;
709
710	if (!PyArg_ParseTuple(arg, ":popitem") \|\|
711	(i = PyObject_GetIter(me)))
712	goto end;
713	if ((k = PyIter_Next(i)) == 0) {
714	if (!PyErr_Occurred()) VALERR("popitem(): mapping is empty");
715	goto end;
716	}
717	if ((v = PyObject_GetItem(me, k)) == 0 \|\|
718	PyObject_DelItem(me, k))
719	goto end;
720	rc = Py_BuildValue("(OO)", k, v);
721	end:
722	Py_XDECREF(i); Py_XDECREF(k); Py_XDECREF(v);
723	return (rc);
724	}
725
726	PyMethodDef gmap_pymethods[] = {
727	GMAP_METHODS
728	{ 0 }
729	};
730
731	/----- Initialization ----------------------------------------------------/
732
8ca23175	733	void util_pyinit(void)
68ec53f3	734	{
0156e402	735	modname = PyString_FromString("catacomb");
68ec53f3 MW	736	INITTYPE(itemiter, root);
	737	INITTYPE(valiter, root);
	738	}
	739
8ca23175	740	void util_pyinsert(PyObject *mod)
68ec53f3 MW	741	{
	742	INSERT("ItemIter", itemiter_pytype);
	743	INSERT("ValueIter", valiter_pytype);
	744	}
	745
	746	/----- That's all, folks -------------------------------------------------/