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/* Convenience functions implemented in Python.
Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of GDB.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "value.h"
#include "exceptions.h"
#include "python-internal.h"
#include "charset.h"
#include "gdbcmd.h"
#include "cli/cli-decode.h"
#include "completer.h"
#include "expression.h"
#include "language.h"
static PyTypeObject fnpy_object_type;
static PyObject *
convert_values_to_python (int argc, struct value **argv)
{
int i;
PyObject *result = PyTuple_New (argc);
for (i = 0; i < argc; ++i)
{
PyObject *elt = value_to_value_object (argv[i]);
if (! elt)
{
Py_DECREF (result);
error (_("Could not convert value to Python object."));
}
PyTuple_SetItem (result, i, elt);
}
return result;
}
/* Call a Python function object's invoke method. */
static struct value *
fnpy_call (struct gdbarch *gdbarch, const struct language_defn *language,
void *cookie, int argc, struct value **argv)
{
struct value *value = NULL;
PyObject *result, *callable, *args;
struct cleanup *cleanup;
cleanup = ensure_python_env (gdbarch, language);
args = convert_values_to_python (argc, argv);
callable = PyObject_GetAttrString ((PyObject *) cookie, "invoke");
if (! callable)
{
Py_DECREF (args);
error (_("No method named 'invoke' in object."));
}
result = PyObject_Call (callable, args, NULL);
Py_DECREF (callable);
Py_DECREF (args);
if (!result)
{
gdbpy_print_stack ();
error (_("Error while executing Python code."));
}
value = convert_value_from_python (result);
if (value == NULL)
{
Py_DECREF (result);
gdbpy_print_stack ();
error (_("Error while executing Python code."));
}
Py_DECREF (result);
do_cleanups (cleanup);
return value;
}
/* Initializer for a Function object. It takes one argument, the name
of the function. */
static int
fnpy_init (PyObject *self, PyObject *args, PyObject *kwds)
{
char *name, *docstring = NULL;
if (! PyArg_ParseTuple (args, "s", &name))
return -1;
Py_INCREF (self);
if (PyObject_HasAttrString (self, "__doc__"))
{
PyObject *ds_obj = PyObject_GetAttrString (self, "__doc__");
if (ds_obj && gdbpy_is_string (ds_obj))
{
docstring = python_string_to_host_string (ds_obj);
if (docstring == NULL)
{
Py_DECREF (self);
return -1;
}
}
}
if (! docstring)
docstring = xstrdup (_("This function is not documented."));
add_internal_function (name, docstring, fnpy_call, self);
return 0;
}
/* Initialize internal function support. */
void
gdbpy_initialize_functions (void)
{
if (PyType_Ready (&fnpy_object_type) < 0)
return;
Py_INCREF (&fnpy_object_type);
PyModule_AddObject (gdb_module, "Function", (PyObject *) &fnpy_object_type);
}
static PyTypeObject fnpy_object_type =
{
PyObject_HEAD_INIT (NULL)
0, /*ob_size*/
"gdb.Function", /*tp_name*/
sizeof (PyObject), /*tp_basicsize*/
0, /*tp_itemsize*/
0, /*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 | Py_TPFLAGS_BASETYPE, /*tp_flags*/
"GDB function object", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* 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 */
fnpy_init, /* tp_init */
0, /* tp_alloc */
PyType_GenericNew /* tp_new */
};
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