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89c73ade TT |
1 | /* Python interface to objfiles. |
2 | ||
7b6bb8da | 3 | Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
89c73ade TT |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "python-internal.h" | |
22 | #include "charset.h" | |
23 | #include "objfiles.h" | |
d452c4bc | 24 | #include "language.h" |
89c73ade TT |
25 | |
26 | typedef struct | |
27 | { | |
28 | PyObject_HEAD | |
29 | ||
30 | /* The corresponding objfile. */ | |
31 | struct objfile *objfile; | |
32 | ||
33 | /* The pretty-printer list of functions. */ | |
34 | PyObject *printers; | |
35 | } objfile_object; | |
36 | ||
37 | static PyTypeObject objfile_object_type; | |
38 | ||
39 | static const struct objfile_data *objfpy_objfile_data_key; | |
40 | ||
41 | \f | |
42 | ||
43 | /* An Objfile method which returns the objfile's file name, or None. */ | |
44 | static PyObject * | |
45 | objfpy_get_filename (PyObject *self, void *closure) | |
46 | { | |
47 | objfile_object *obj = (objfile_object *) self; | |
d59b6f6c | 48 | |
d31d2fc3 | 49 | if (obj->objfile) |
89c73ade TT |
50 | return PyString_Decode (obj->objfile->name, strlen (obj->objfile->name), |
51 | host_charset (), NULL); | |
52 | Py_RETURN_NONE; | |
53 | } | |
54 | ||
55 | static void | |
56 | objfpy_dealloc (PyObject *o) | |
57 | { | |
58 | objfile_object *self = (objfile_object *) o; | |
d59b6f6c | 59 | |
89c73ade TT |
60 | Py_XDECREF (self->printers); |
61 | self->ob_type->tp_free ((PyObject *) self); | |
62 | } | |
63 | ||
64 | static PyObject * | |
65 | objfpy_new (PyTypeObject *type, PyObject *args, PyObject *keywords) | |
66 | { | |
67 | objfile_object *self = (objfile_object *) type->tp_alloc (type, 0); | |
d59b6f6c | 68 | |
89c73ade TT |
69 | if (self) |
70 | { | |
71 | self->objfile = NULL; | |
72 | ||
73 | self->printers = PyList_New (0); | |
74 | if (!self->printers) | |
75 | { | |
76 | Py_DECREF (self); | |
77 | return NULL; | |
78 | } | |
79 | } | |
80 | return (PyObject *) self; | |
81 | } | |
82 | ||
83 | PyObject * | |
84 | objfpy_get_printers (PyObject *o, void *ignore) | |
85 | { | |
86 | objfile_object *self = (objfile_object *) o; | |
d59b6f6c | 87 | |
89c73ade TT |
88 | Py_INCREF (self->printers); |
89 | return self->printers; | |
90 | } | |
91 | ||
92 | static int | |
93 | objfpy_set_printers (PyObject *o, PyObject *value, void *ignore) | |
94 | { | |
95 | PyObject *tmp; | |
96 | objfile_object *self = (objfile_object *) o; | |
d59b6f6c | 97 | |
89c73ade TT |
98 | if (! value) |
99 | { | |
100 | PyErr_SetString (PyExc_TypeError, | |
044c0f87 | 101 | _("Cannot delete the pretty_printers attribute.")); |
89c73ade TT |
102 | return -1; |
103 | } | |
104 | ||
105 | if (! PyList_Check (value)) | |
106 | { | |
107 | PyErr_SetString (PyExc_TypeError, | |
044c0f87 | 108 | _("The pretty_printers attribute must be a list.")); |
89c73ade TT |
109 | return -1; |
110 | } | |
111 | ||
112 | /* Take care in case the LHS and RHS are related somehow. */ | |
113 | tmp = self->printers; | |
114 | Py_INCREF (value); | |
115 | self->printers = value; | |
116 | Py_XDECREF (tmp); | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
29703da4 PM |
121 | /* Implementation of gdb.Objfile.is_valid (self) -> Boolean. |
122 | Returns True if this object file still exists in GDB. */ | |
123 | ||
124 | static PyObject * | |
125 | objfpy_is_valid (PyObject *self, PyObject *args) | |
126 | { | |
127 | objfile_object *obj = (objfile_object *) self; | |
128 | ||
129 | if (! obj->objfile) | |
130 | Py_RETURN_FALSE; | |
131 | ||
132 | Py_RETURN_TRUE; | |
133 | } | |
134 | ||
89c73ade TT |
135 | \f |
136 | ||
137 | /* Clear the OBJFILE pointer in an Objfile object and remove the | |
138 | reference. */ | |
139 | static void | |
c1bd65d0 | 140 | py_free_objfile (struct objfile *objfile, void *datum) |
89c73ade | 141 | { |
d452c4bc | 142 | struct cleanup *cleanup; |
89c73ade TT |
143 | objfile_object *object = datum; |
144 | ||
d452c4bc | 145 | cleanup = ensure_python_env (get_objfile_arch (objfile), current_language); |
89c73ade TT |
146 | object->objfile = NULL; |
147 | Py_DECREF ((PyObject *) object); | |
d452c4bc | 148 | do_cleanups (cleanup); |
89c73ade TT |
149 | } |
150 | ||
151 | /* Return a borrowed reference to the Python object of type Objfile | |
152 | representing OBJFILE. If the object has already been created, | |
153 | return it. Otherwise, create it. Return NULL and set the Python | |
154 | error on failure. */ | |
155 | PyObject * | |
156 | objfile_to_objfile_object (struct objfile *objfile) | |
157 | { | |
158 | objfile_object *object; | |
159 | ||
160 | object = objfile_data (objfile, objfpy_objfile_data_key); | |
161 | if (!object) | |
162 | { | |
163 | object = PyObject_New (objfile_object, &objfile_object_type); | |
164 | if (object) | |
165 | { | |
89c73ade TT |
166 | object->objfile = objfile; |
167 | ||
168 | object->printers = PyList_New (0); | |
169 | if (!object->printers) | |
170 | { | |
171 | Py_DECREF (object); | |
172 | return NULL; | |
173 | } | |
174 | ||
175 | set_objfile_data (objfile, objfpy_objfile_data_key, object); | |
176 | } | |
177 | } | |
178 | ||
179 | return (PyObject *) object; | |
180 | } | |
181 | ||
182 | void | |
183 | gdbpy_initialize_objfile (void) | |
184 | { | |
185 | objfpy_objfile_data_key | |
c1bd65d0 | 186 | = register_objfile_data_with_cleanup (NULL, py_free_objfile); |
89c73ade TT |
187 | |
188 | if (PyType_Ready (&objfile_object_type) < 0) | |
189 | return; | |
190 | ||
191 | Py_INCREF (&objfile_object_type); | |
9a2b4c1b MS |
192 | PyModule_AddObject (gdb_module, "Objfile", |
193 | (PyObject *) &objfile_object_type); | |
89c73ade TT |
194 | } |
195 | ||
196 | \f | |
197 | ||
29703da4 PM |
198 | static PyMethodDef objfile_object_methods[] = |
199 | { | |
200 | { "is_valid", objfpy_is_valid, METH_NOARGS, | |
201 | "is_valid () -> Boolean.\n\ | |
202 | Return true if this object file is valid, false if not." }, | |
203 | ||
204 | { NULL } | |
205 | }; | |
206 | ||
89c73ade TT |
207 | static PyGetSetDef objfile_getset[] = |
208 | { | |
209 | { "filename", objfpy_get_filename, NULL, | |
210 | "The objfile's filename, or None.", NULL }, | |
211 | { "pretty_printers", objfpy_get_printers, objfpy_set_printers, | |
212 | "Pretty printers.", NULL }, | |
213 | { NULL } | |
214 | }; | |
215 | ||
216 | static PyTypeObject objfile_object_type = | |
217 | { | |
218 | PyObject_HEAD_INIT (NULL) | |
219 | 0, /*ob_size*/ | |
220 | "gdb.Objfile", /*tp_name*/ | |
221 | sizeof (objfile_object), /*tp_basicsize*/ | |
222 | 0, /*tp_itemsize*/ | |
223 | objfpy_dealloc, /*tp_dealloc*/ | |
224 | 0, /*tp_print*/ | |
225 | 0, /*tp_getattr*/ | |
226 | 0, /*tp_setattr*/ | |
227 | 0, /*tp_compare*/ | |
228 | 0, /*tp_repr*/ | |
229 | 0, /*tp_as_number*/ | |
230 | 0, /*tp_as_sequence*/ | |
231 | 0, /*tp_as_mapping*/ | |
232 | 0, /*tp_hash */ | |
233 | 0, /*tp_call*/ | |
234 | 0, /*tp_str*/ | |
235 | 0, /*tp_getattro*/ | |
236 | 0, /*tp_setattro*/ | |
237 | 0, /*tp_as_buffer*/ | |
238 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ | |
239 | "GDB objfile object", /* tp_doc */ | |
240 | 0, /* tp_traverse */ | |
241 | 0, /* tp_clear */ | |
242 | 0, /* tp_richcompare */ | |
243 | 0, /* tp_weaklistoffset */ | |
244 | 0, /* tp_iter */ | |
245 | 0, /* tp_iternext */ | |
29703da4 | 246 | objfile_object_methods, /* tp_methods */ |
89c73ade TT |
247 | 0, /* tp_members */ |
248 | objfile_getset, /* tp_getset */ | |
249 | 0, /* tp_base */ | |
250 | 0, /* tp_dict */ | |
251 | 0, /* tp_descr_get */ | |
252 | 0, /* tp_descr_set */ | |
253 | 0, /* tp_dictoffset */ | |
254 | 0, /* tp_init */ | |
255 | 0, /* tp_alloc */ | |
256 | objfpy_new, /* tp_new */ | |
257 | }; |