util.c: Use Python's machinery for handling 64-bit integers.

[pyke] / util.c

diff --git a/util.c b/util.c
index 96a4052..027033e 100644 (file)
--- a/util.c
+++ b/util.c
@@ -28,6 +28,12 @@
 
 #include "catacomb-python.h"
 
+/* #undef HAVE_LONG_LONG */
+
+/*----- External values ---------------------------------------------------*/
+
+static PyObject *modname = 0;
+
 /*----- Conversions -------------------------------------------------------*/
 
 PyObject *getulong(unsigned long w)
@@ -38,6 +44,35 @@ PyObject *getulong(unsigned long w)
     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;
@@ -56,6 +91,7 @@ int convulong(PyObject *o, void *pp)
   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");
@@ -71,15 +107,32 @@ 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 (!convulong(o, &u)) goto end;                                   \
-    if (u > MASK##n) VALERR("out of range");                           \
-    *p = u;                                                            \
+    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);                                                                \
@@ -99,6 +152,42 @@ 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;
@@ -127,8 +216,11 @@ end:
 
 int convbool(PyObject *o, void *pp)
 {
+  if (!o) VALERR("can't delete");
   *(int *)pp = PyObject_IsTrue(o);
   return (1);
+end:
+  return (0);
 }
 
 /*----- Type messing ------------------------------------------------------*/
@@ -163,16 +255,22 @@ void *newtype(PyTypeObject *metaty,
     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);
-  PyObject_INIT(&ty->ht_type, metaty);
+  DISCARD(PyObject_INIT(&ty->ht_type, metaty));
   Py_INCREF(metaty);
   return (ty);
 }
 
-PyTypeObject *inittype(PyTypeObject *tyskel)
+void typeready(PyTypeObject *ty)
 {
-  PyTypeObject *ty = newtype(&PyType_Type, tyskel, 0);
-  ty->tp_flags |= Py_TPFLAGS_HEAPTYPE;
   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);
 }
 
@@ -216,8 +314,8 @@ PyMethodDef *donemethods(void)
 
 /*----- Exceptions --------------------------------------------------------*/
 
-PyObject * mkexc(PyObject *mod, PyObject *base,
-                const char *name, PyMethodDef *mm)
+PyObject *mkexc(PyObject *mod, PyObject *base,
+               const char *name, PyMethodDef *mm)
 {
   PyObject *nameobj = 0;
   PyObject *dict = 0;
@@ -403,7 +501,7 @@ PySequenceMethods gmap_pysequence = {
   0                                    /* @sq_inplace_repeat@ */
 };
 
-int gmap_pysize(PyObject *me)
+Py_ssize_t gmap_pysize(PyObject *me)
 {
   PyObject *i = 0, *x = 0;
   int rc = -1;
@@ -634,6 +732,7 @@ PyMethodDef gmap_pymethods[] = {
 
 void util_pyinit(void)
 {
+  modname = PyString_FromString("catacomb");
   INITTYPE(itemiter, root);
   INITTYPE(valiter, root);
 }