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89c73ade TT |
1 | /* Python interface to objfiles. |
2 | ||
4c38e0a4 | 3 | Copyright (C) 2008, 2009, 2010 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; | |
48 | if (obj->objfile && obj->objfile->name) | |
49 | return PyString_Decode (obj->objfile->name, strlen (obj->objfile->name), | |
50 | host_charset (), NULL); | |
51 | Py_RETURN_NONE; | |
52 | } | |
53 | ||
54 | static void | |
55 | objfpy_dealloc (PyObject *o) | |
56 | { | |
57 | objfile_object *self = (objfile_object *) o; | |
58 | Py_XDECREF (self->printers); | |
59 | self->ob_type->tp_free ((PyObject *) self); | |
60 | } | |
61 | ||
62 | static PyObject * | |
63 | objfpy_new (PyTypeObject *type, PyObject *args, PyObject *keywords) | |
64 | { | |
65 | objfile_object *self = (objfile_object *) type->tp_alloc (type, 0); | |
66 | if (self) | |
67 | { | |
68 | self->objfile = NULL; | |
69 | ||
70 | self->printers = PyList_New (0); | |
71 | if (!self->printers) | |
72 | { | |
73 | Py_DECREF (self); | |
74 | return NULL; | |
75 | } | |
76 | } | |
77 | return (PyObject *) self; | |
78 | } | |
79 | ||
80 | PyObject * | |
81 | objfpy_get_printers (PyObject *o, void *ignore) | |
82 | { | |
83 | objfile_object *self = (objfile_object *) o; | |
84 | Py_INCREF (self->printers); | |
85 | return self->printers; | |
86 | } | |
87 | ||
88 | static int | |
89 | objfpy_set_printers (PyObject *o, PyObject *value, void *ignore) | |
90 | { | |
91 | PyObject *tmp; | |
92 | objfile_object *self = (objfile_object *) o; | |
93 | if (! value) | |
94 | { | |
95 | PyErr_SetString (PyExc_TypeError, | |
96 | "cannot delete the pretty_printers attribute"); | |
97 | return -1; | |
98 | } | |
99 | ||
100 | if (! PyList_Check (value)) | |
101 | { | |
102 | PyErr_SetString (PyExc_TypeError, | |
103 | "the pretty_printers attribute must be a list"); | |
104 | return -1; | |
105 | } | |
106 | ||
107 | /* Take care in case the LHS and RHS are related somehow. */ | |
108 | tmp = self->printers; | |
109 | Py_INCREF (value); | |
110 | self->printers = value; | |
111 | Py_XDECREF (tmp); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | \f | |
117 | ||
118 | /* Clear the OBJFILE pointer in an Objfile object and remove the | |
119 | reference. */ | |
120 | static void | |
c1bd65d0 | 121 | py_free_objfile (struct objfile *objfile, void *datum) |
89c73ade | 122 | { |
d452c4bc | 123 | struct cleanup *cleanup; |
89c73ade TT |
124 | objfile_object *object = datum; |
125 | ||
d452c4bc | 126 | cleanup = ensure_python_env (get_objfile_arch (objfile), current_language); |
89c73ade TT |
127 | object->objfile = NULL; |
128 | Py_DECREF ((PyObject *) object); | |
d452c4bc | 129 | do_cleanups (cleanup); |
89c73ade TT |
130 | } |
131 | ||
132 | /* Return a borrowed reference to the Python object of type Objfile | |
133 | representing OBJFILE. If the object has already been created, | |
134 | return it. Otherwise, create it. Return NULL and set the Python | |
135 | error on failure. */ | |
136 | PyObject * | |
137 | objfile_to_objfile_object (struct objfile *objfile) | |
138 | { | |
139 | objfile_object *object; | |
140 | ||
141 | object = objfile_data (objfile, objfpy_objfile_data_key); | |
142 | if (!object) | |
143 | { | |
144 | object = PyObject_New (objfile_object, &objfile_object_type); | |
145 | if (object) | |
146 | { | |
147 | PyObject *dict; | |
148 | ||
149 | object->objfile = objfile; | |
150 | ||
151 | object->printers = PyList_New (0); | |
152 | if (!object->printers) | |
153 | { | |
154 | Py_DECREF (object); | |
155 | return NULL; | |
156 | } | |
157 | ||
158 | set_objfile_data (objfile, objfpy_objfile_data_key, object); | |
159 | } | |
160 | } | |
161 | ||
162 | return (PyObject *) object; | |
163 | } | |
164 | ||
165 | void | |
166 | gdbpy_initialize_objfile (void) | |
167 | { | |
168 | objfpy_objfile_data_key | |
c1bd65d0 | 169 | = register_objfile_data_with_cleanup (NULL, py_free_objfile); |
89c73ade TT |
170 | |
171 | if (PyType_Ready (&objfile_object_type) < 0) | |
172 | return; | |
173 | ||
174 | Py_INCREF (&objfile_object_type); | |
175 | PyModule_AddObject (gdb_module, "Objfile", (PyObject *) &objfile_object_type); | |
176 | } | |
177 | ||
178 | \f | |
179 | ||
180 | static PyGetSetDef objfile_getset[] = | |
181 | { | |
182 | { "filename", objfpy_get_filename, NULL, | |
183 | "The objfile's filename, or None.", NULL }, | |
184 | { "pretty_printers", objfpy_get_printers, objfpy_set_printers, | |
185 | "Pretty printers.", NULL }, | |
186 | { NULL } | |
187 | }; | |
188 | ||
189 | static PyTypeObject objfile_object_type = | |
190 | { | |
191 | PyObject_HEAD_INIT (NULL) | |
192 | 0, /*ob_size*/ | |
193 | "gdb.Objfile", /*tp_name*/ | |
194 | sizeof (objfile_object), /*tp_basicsize*/ | |
195 | 0, /*tp_itemsize*/ | |
196 | objfpy_dealloc, /*tp_dealloc*/ | |
197 | 0, /*tp_print*/ | |
198 | 0, /*tp_getattr*/ | |
199 | 0, /*tp_setattr*/ | |
200 | 0, /*tp_compare*/ | |
201 | 0, /*tp_repr*/ | |
202 | 0, /*tp_as_number*/ | |
203 | 0, /*tp_as_sequence*/ | |
204 | 0, /*tp_as_mapping*/ | |
205 | 0, /*tp_hash */ | |
206 | 0, /*tp_call*/ | |
207 | 0, /*tp_str*/ | |
208 | 0, /*tp_getattro*/ | |
209 | 0, /*tp_setattro*/ | |
210 | 0, /*tp_as_buffer*/ | |
211 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ | |
212 | "GDB objfile object", /* tp_doc */ | |
213 | 0, /* tp_traverse */ | |
214 | 0, /* tp_clear */ | |
215 | 0, /* tp_richcompare */ | |
216 | 0, /* tp_weaklistoffset */ | |
217 | 0, /* tp_iter */ | |
218 | 0, /* tp_iternext */ | |
219 | 0, /* tp_methods */ | |
220 | 0, /* tp_members */ | |
221 | objfile_getset, /* tp_getset */ | |
222 | 0, /* tp_base */ | |
223 | 0, /* tp_dict */ | |
224 | 0, /* tp_descr_get */ | |
225 | 0, /* tp_descr_set */ | |
226 | 0, /* tp_dictoffset */ | |
227 | 0, /* tp_init */ | |
228 | 0, /* tp_alloc */ | |
229 | objfpy_new, /* tp_new */ | |
230 | }; |