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Trent Mick: 

Change static slice_index() to extern _PyEval_SliceIndex() (with
different return value interpretation: 0 for failure, 1 for success).
This commit is contained in:
Guido van Rossum 2000-05-08 14:06:50 +00:00
parent 7c36ada115
commit 20c6add7ff
1 changed files with 14 additions and 11 deletions
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25
Python/ceval.c
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@ -80,7 +80,6 @@ static int call_trace Py_PROTO((PyObject **, PyObject **,
static PyObject *call_builtin Py_PROTO((PyObject *, PyObject *, PyObject *));
static PyObject *call_function Py_PROTO((PyObject *, PyObject *, PyObject *));
static PyObject *loop_subscript Py_PROTO((PyObject *, PyObject *));
static int slice_index Py_PROTO((PyObject *, int *));
static PyObject *apply_slice Py_PROTO((PyObject *, PyObject *, PyObject *));
static int assign_slice Py_PROTO((PyObject *, PyObject *,
PyObject *, PyObject *));
@ -2587,8 +2586,12 @@ loop_subscript(v, w)
return NULL;
}
static int
slice_index(v, pi)
/* Extract a slice index from a PyInt or PyLong, the index is bound to
the range [-INT_MAX+1, INTMAX]. Returns 0 and an exception if there is
and error. Returns 1 on success.*/
int
_PyEval_SliceIndex(v, pi)
PyObject *v;
int *pi;
{
@ -2604,7 +2607,7 @@ slice_index(v, pi)
if (!PyErr_ExceptionMatches( PyExc_OverflowError ) ) {
/* It's not an overflow error, so just
signal an error */
return -1;
return 0;
}
/* It's an overflow error, so we need to
@ -2614,7 +2617,7 @@ slice_index(v, pi)
/* Create a long integer with a value of 0 */
long_zero = PyLong_FromLong( 0L );
if (long_zero == NULL) return -1;
if (long_zero == NULL) return 0;
/* Check sign */
if (PyObject_Compare(long_zero, v) < 0)
@ -2630,7 +2633,7 @@ slice_index(v, pi)
} else {
PyErr_SetString(PyExc_TypeError,
"slice index must be int");
return -1;
return 0;
}
/* Truncate -- very long indices are truncated anyway */
if (x > INT_MAX)
@ -2639,7 +2642,7 @@ slice_index(v, pi)
x = 0;
*pi = x;
}
return 0;
return 1;
}
static PyObject *
@ -2647,9 +2650,9 @@ apply_slice(u, v, w) /* return u[v:w] */
PyObject *u, *v, *w;
{
int ilow = 0, ihigh = INT_MAX;
if (slice_index(v, &ilow) != 0)
if (!_PyEval_SliceIndex(v, &ilow))
return NULL;
if (slice_index(w, &ihigh) != 0)
if (!_PyEval_SliceIndex(w, &ihigh))
return NULL;
return PySequence_GetSlice(u, ilow, ihigh);
}
@ -2659,9 +2662,9 @@ assign_slice(u, v, w, x) /* u[v:w] = x */
PyObject *u, *v, *w, *x;
{
int ilow = 0, ihigh = INT_MAX;
if (slice_index(v, &ilow) != 0)
if (!_PyEval_SliceIndex(v, &ilow))
return -1;
if (slice_index(w, &ihigh) != 0)
if (!_PyEval_SliceIndex(w, &ihigh))
return -1;
if (x == NULL)
return PySequence_DelSlice(u, ilow, ihigh);