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2009-12-08 Phil Muldoon <pmuldoon@redhat.com>

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PR python/10804

	* python/py-type.c (typy_range): New Function.

2009-12-08  Phil Muldoon  <pmuldoon@redhat.com>

	* gdb.python/py-type.exp (test_range): New test.


2009-12-08  Phil Muldoon  <pmuldoon@redhat.com>

	* gdb.texinfo (Types In Python): Describe range function.
This commit is contained in:
Phil Muldoon 2009-12-08 14:06:04 +00:00
parent 40b5c9fb4b
commit 361ae04250
6 changed files with 112 additions and 0 deletions
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67
gdb/python/py-type.c
View file

@ -273,6 +273,70 @@ typy_pointer (PyObject *self, PyObject *args)
return type_to_type_object (type);
}
/* Return the range of a type represented by SELF. The return type is
a tuple. The first element of the tuple contains the low bound,
while the second element of the tuple contains the high bound. */
static PyObject *
typy_range (PyObject *self, PyObject *args)
{
struct type *type = ((type_object *) self)->type;
PyObject *result;
PyObject *low_bound = NULL, *high_bound = NULL;
LONGEST low, high;
if (TYPE_CODE (type) != TYPE_CODE_ARRAY
&& TYPE_CODE (type) != TYPE_CODE_STRING
&& TYPE_CODE (type) != TYPE_CODE_RANGE)
{
PyErr_SetString (PyExc_RuntimeError,
"This type does not have a range.");
return NULL;
}
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
case TYPE_CODE_STRING:
low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type));
high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (type));
break;
case TYPE_CODE_RANGE:
low = TYPE_LOW_BOUND (type);
high = TYPE_HIGH_BOUND (type);
break;
}
low_bound = PyLong_FromLong (low);
if (!low_bound)
goto failarg;
high_bound = PyLong_FromLong (high);
if (!high_bound)
goto failarg;
result = PyTuple_New (2);
if (!result)
goto failarg;
if (PyTuple_SetItem (result, 0, low_bound) != 0)
{
Py_DECREF (result);
goto failarg;
}
if (PyTuple_SetItem (result, 1, high_bound) != 0)
{
Py_DECREF (high_bound);
Py_DECREF (result);
return NULL;
}
return result;
failarg:
Py_XDECREF (high_bound);
Py_XDECREF (low_bound);
return NULL;
}
/* Return a Type object which represents a reference to SELF. */
static PyObject *
typy_reference (PyObject *self, PyObject *args)
@ -699,6 +763,9 @@ Each field is a dictionary." },
{ "pointer", typy_pointer, METH_NOARGS,
"pointer () -> Type\n\
Return a type of pointer to this type." },
{ "range", typy_range, METH_NOARGS,
"range () -> tuple\n\
Return a tuple containing the lower and upper range for this type."},
{ "reference", typy_reference, METH_NOARGS,
"reference () -> Type\n\
Return a type of reference to this type." },