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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [gdb/] [python/] [py-objfile.c] - Blame information for rev 842

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1 227 jeremybenn
/* Python interface to objfiles.
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   Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#include "defs.h"
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#include "python-internal.h"
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#include "charset.h"
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#include "objfiles.h"
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#include "language.h"
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typedef struct
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{
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  PyObject_HEAD
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  /* The corresponding objfile.  */
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  struct objfile *objfile;
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  /* The pretty-printer list of functions.  */
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  PyObject *printers;
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} objfile_object;
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static PyTypeObject objfile_object_type;
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static const struct objfile_data *objfpy_objfile_data_key;
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/* An Objfile method which returns the objfile's file name, or None.  */
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static PyObject *
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objfpy_get_filename (PyObject *self, void *closure)
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{
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  objfile_object *obj = (objfile_object *) self;
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  if (obj->objfile && obj->objfile->name)
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    return PyString_Decode (obj->objfile->name, strlen (obj->objfile->name),
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                            host_charset (), NULL);
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  Py_RETURN_NONE;
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}
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static void
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objfpy_dealloc (PyObject *o)
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{
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  objfile_object *self = (objfile_object *) o;
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  Py_XDECREF (self->printers);
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  self->ob_type->tp_free ((PyObject *) self);
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}
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static PyObject *
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objfpy_new (PyTypeObject *type, PyObject *args, PyObject *keywords)
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{
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  objfile_object *self = (objfile_object *) type->tp_alloc (type, 0);
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  if (self)
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    {
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      self->objfile = NULL;
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      self->printers = PyList_New (0);
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      if (!self->printers)
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        {
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          Py_DECREF (self);
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          return NULL;
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        }
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    }
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  return (PyObject *) self;
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}
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PyObject *
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objfpy_get_printers (PyObject *o, void *ignore)
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{
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  objfile_object *self = (objfile_object *) o;
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  Py_INCREF (self->printers);
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  return self->printers;
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}
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static int
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objfpy_set_printers (PyObject *o, PyObject *value, void *ignore)
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{
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  PyObject *tmp;
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  objfile_object *self = (objfile_object *) o;
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  if (! value)
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    {
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      PyErr_SetString (PyExc_TypeError,
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                       "cannot delete the pretty_printers attribute");
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      return -1;
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    }
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  if (! PyList_Check (value))
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    {
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      PyErr_SetString (PyExc_TypeError,
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                       "the pretty_printers attribute must be a list");
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      return -1;
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    }
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  /* Take care in case the LHS and RHS are related somehow.  */
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  tmp = self->printers;
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  Py_INCREF (value);
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  self->printers = value;
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  Py_XDECREF (tmp);
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  return 0;
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}
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/* Clear the OBJFILE pointer in an Objfile object and remove the
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   reference.  */
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static void
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py_free_objfile (struct objfile *objfile, void *datum)
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{
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  struct cleanup *cleanup;
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  objfile_object *object = datum;
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  cleanup = ensure_python_env (get_objfile_arch (objfile), current_language);
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  object->objfile = NULL;
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  Py_DECREF ((PyObject *) object);
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  do_cleanups (cleanup);
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}
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/* Return a borrowed reference to the Python object of type Objfile
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   representing OBJFILE.  If the object has already been created,
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   return it.  Otherwise, create it.  Return NULL and set the Python
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   error on failure.  */
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PyObject *
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objfile_to_objfile_object (struct objfile *objfile)
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{
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  objfile_object *object;
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  object = objfile_data (objfile, objfpy_objfile_data_key);
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  if (!object)
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    {
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      object = PyObject_New (objfile_object, &objfile_object_type);
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      if (object)
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        {
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          PyObject *dict;
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          object->objfile = objfile;
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          object->printers = PyList_New (0);
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          if (!object->printers)
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            {
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              Py_DECREF (object);
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              return NULL;
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            }
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          set_objfile_data (objfile, objfpy_objfile_data_key, object);
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        }
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    }
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  return (PyObject *) object;
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}
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void
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gdbpy_initialize_objfile (void)
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{
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  objfpy_objfile_data_key
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    = register_objfile_data_with_cleanup (NULL, py_free_objfile);
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  if (PyType_Ready (&objfile_object_type) < 0)
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    return;
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  Py_INCREF (&objfile_object_type);
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  PyModule_AddObject (gdb_module, "Objfile", (PyObject *) &objfile_object_type);
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}
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static PyGetSetDef objfile_getset[] =
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{
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  { "filename", objfpy_get_filename, NULL,
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    "The objfile's filename, or None.", NULL },
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  { "pretty_printers", objfpy_get_printers, objfpy_set_printers,
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    "Pretty printers.", NULL },
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  { NULL }
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};
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static PyTypeObject objfile_object_type =
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{
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  PyObject_HEAD_INIT (NULL)
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  0,                               /*ob_size*/
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  "gdb.Objfile",                  /*tp_name*/
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  sizeof (objfile_object),        /*tp_basicsize*/
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  0,                               /*tp_itemsize*/
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  objfpy_dealloc,                 /*tp_dealloc*/
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  0,                               /*tp_print*/
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  0,                               /*tp_getattr*/
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  0,                               /*tp_setattr*/
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  0,                               /*tp_compare*/
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  0,                               /*tp_repr*/
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  0,                               /*tp_as_number*/
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  0,                               /*tp_as_sequence*/
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  0,                               /*tp_as_mapping*/
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  0,                               /*tp_hash */
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  0,                               /*tp_call*/
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  0,                               /*tp_str*/
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  0,                               /*tp_getattro*/
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  0,                               /*tp_setattro*/
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  0,                               /*tp_as_buffer*/
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  Py_TPFLAGS_DEFAULT,             /*tp_flags*/
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  "GDB objfile object",           /* tp_doc */
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  0,                               /* tp_traverse */
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  0,                               /* tp_clear */
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  0,                               /* tp_richcompare */
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  0,                               /* tp_weaklistoffset */
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  0,                               /* tp_iter */
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  0,                               /* tp_iternext */
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  0,                               /* tp_methods */
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  0,                               /* tp_members */
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  objfile_getset,                 /* tp_getset */
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  0,                               /* tp_base */
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  0,                               /* tp_dict */
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  0,                               /* tp_descr_get */
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  0,                               /* tp_descr_set */
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  0,                               /* tp_dictoffset */
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  0,                               /* tp_init */
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  0,                               /* tp_alloc */
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  objfpy_new,                     /* tp_new */
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};

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