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fa33c3cd DE |
1 | /* Python interface to program spaces. |
2 | ||
7b6bb8da | 3 | Copyright (C) 2010, 2011 Free Software Foundation, Inc. |
fa33c3cd DE |
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 "progspace.h" | |
24 | #include "objfiles.h" | |
25 | #include "language.h" | |
b3422a0d | 26 | #include "arch-utils.h" |
fa33c3cd DE |
27 | |
28 | typedef struct | |
29 | { | |
30 | PyObject_HEAD | |
31 | ||
32 | /* The corresponding pspace. */ | |
33 | struct program_space *pspace; | |
34 | ||
35 | /* The pretty-printer list of functions. */ | |
36 | PyObject *printers; | |
37 | } pspace_object; | |
38 | ||
39 | static PyTypeObject pspace_object_type; | |
40 | ||
41 | static const struct program_space_data *pspy_pspace_data_key; | |
42 | ||
43 | \f | |
44 | ||
45 | /* An Objfile method which returns the objfile's file name, or None. */ | |
46 | ||
47 | static PyObject * | |
48 | pspy_get_filename (PyObject *self, void *closure) | |
49 | { | |
50 | pspace_object *obj = (pspace_object *) self; | |
d59b6f6c | 51 | |
fa33c3cd DE |
52 | if (obj->pspace) |
53 | { | |
54 | struct objfile *objfile = obj->pspace->symfile_object_file; | |
d59b6f6c | 55 | |
d31d2fc3 | 56 | if (objfile) |
fa33c3cd DE |
57 | return PyString_Decode (objfile->name, strlen (objfile->name), |
58 | host_charset (), NULL); | |
59 | } | |
60 | Py_RETURN_NONE; | |
61 | } | |
62 | ||
63 | static void | |
64 | pspy_dealloc (PyObject *self) | |
65 | { | |
66 | pspace_object *ps_self = (pspace_object *) self; | |
d59b6f6c | 67 | |
fa33c3cd DE |
68 | Py_XDECREF (ps_self->printers); |
69 | self->ob_type->tp_free (self); | |
70 | } | |
71 | ||
72 | static PyObject * | |
73 | pspy_new (PyTypeObject *type, PyObject *args, PyObject *keywords) | |
74 | { | |
75 | pspace_object *self = (pspace_object *) type->tp_alloc (type, 0); | |
d59b6f6c | 76 | |
fa33c3cd DE |
77 | if (self) |
78 | { | |
79 | self->pspace = NULL; | |
80 | ||
81 | self->printers = PyList_New (0); | |
82 | if (!self->printers) | |
83 | { | |
84 | Py_DECREF (self); | |
85 | return NULL; | |
86 | } | |
87 | } | |
88 | return (PyObject *) self; | |
89 | } | |
90 | ||
91 | PyObject * | |
92 | pspy_get_printers (PyObject *o, void *ignore) | |
93 | { | |
94 | pspace_object *self = (pspace_object *) o; | |
d59b6f6c | 95 | |
fa33c3cd DE |
96 | Py_INCREF (self->printers); |
97 | return self->printers; | |
98 | } | |
99 | ||
100 | static int | |
101 | pspy_set_printers (PyObject *o, PyObject *value, void *ignore) | |
102 | { | |
103 | PyObject *tmp; | |
104 | pspace_object *self = (pspace_object *) o; | |
d59b6f6c | 105 | |
fa33c3cd DE |
106 | if (! value) |
107 | { | |
108 | PyErr_SetString (PyExc_TypeError, | |
109 | "cannot delete the pretty_printers attribute"); | |
110 | return -1; | |
111 | } | |
112 | ||
113 | if (! PyList_Check (value)) | |
114 | { | |
115 | PyErr_SetString (PyExc_TypeError, | |
116 | "the pretty_printers attribute must be a list"); | |
117 | return -1; | |
118 | } | |
119 | ||
120 | /* Take care in case the LHS and RHS are related somehow. */ | |
121 | tmp = self->printers; | |
122 | Py_INCREF (value); | |
123 | self->printers = value; | |
124 | Py_XDECREF (tmp); | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | \f | |
130 | ||
131 | /* Clear the PSPACE pointer in a Pspace object and remove the reference. */ | |
132 | ||
133 | static void | |
134 | py_free_pspace (struct program_space *pspace, void *datum) | |
135 | { | |
136 | struct cleanup *cleanup; | |
137 | pspace_object *object = datum; | |
b3422a0d | 138 | struct gdbarch *arch = get_current_arch (); |
fa33c3cd DE |
139 | |
140 | cleanup = ensure_python_env (arch, current_language); | |
141 | object->pspace = NULL; | |
142 | Py_DECREF ((PyObject *) object); | |
143 | do_cleanups (cleanup); | |
144 | } | |
145 | ||
146 | /* Return a borrowed reference to the Python object of type Pspace | |
147 | representing PSPACE. If the object has already been created, | |
148 | return it. Otherwise, create it. Return NULL and set the Python | |
149 | error on failure. */ | |
150 | ||
151 | PyObject * | |
152 | pspace_to_pspace_object (struct program_space *pspace) | |
153 | { | |
154 | pspace_object *object; | |
155 | ||
156 | object = program_space_data (pspace, pspy_pspace_data_key); | |
157 | if (!object) | |
158 | { | |
159 | object = PyObject_New (pspace_object, &pspace_object_type); | |
160 | if (object) | |
161 | { | |
fa33c3cd DE |
162 | object->pspace = pspace; |
163 | ||
164 | object->printers = PyList_New (0); | |
165 | if (!object->printers) | |
166 | { | |
167 | Py_DECREF (object); | |
168 | return NULL; | |
169 | } | |
170 | ||
171 | set_program_space_data (pspace, pspy_pspace_data_key, object); | |
172 | } | |
173 | } | |
174 | ||
175 | return (PyObject *) object; | |
176 | } | |
177 | ||
178 | void | |
179 | gdbpy_initialize_pspace (void) | |
180 | { | |
181 | pspy_pspace_data_key | |
182 | = register_program_space_data_with_cleanup (py_free_pspace); | |
183 | ||
184 | if (PyType_Ready (&pspace_object_type) < 0) | |
185 | return; | |
186 | ||
187 | Py_INCREF (&pspace_object_type); | |
9a2b4c1b MS |
188 | PyModule_AddObject (gdb_module, "Progspace", |
189 | (PyObject *) &pspace_object_type); | |
fa33c3cd DE |
190 | } |
191 | ||
192 | \f | |
193 | ||
194 | static PyGetSetDef pspace_getset[] = | |
195 | { | |
196 | { "filename", pspy_get_filename, NULL, | |
197 | "The progspace's main filename, or None.", NULL }, | |
198 | { "pretty_printers", pspy_get_printers, pspy_set_printers, | |
199 | "Pretty printers.", NULL }, | |
200 | { NULL } | |
201 | }; | |
202 | ||
203 | static PyTypeObject pspace_object_type = | |
204 | { | |
205 | PyObject_HEAD_INIT (NULL) | |
206 | 0, /*ob_size*/ | |
207 | "gdb.Progspace", /*tp_name*/ | |
208 | sizeof (pspace_object), /*tp_basicsize*/ | |
209 | 0, /*tp_itemsize*/ | |
210 | pspy_dealloc, /*tp_dealloc*/ | |
211 | 0, /*tp_print*/ | |
212 | 0, /*tp_getattr*/ | |
213 | 0, /*tp_setattr*/ | |
214 | 0, /*tp_compare*/ | |
215 | 0, /*tp_repr*/ | |
216 | 0, /*tp_as_number*/ | |
217 | 0, /*tp_as_sequence*/ | |
218 | 0, /*tp_as_mapping*/ | |
219 | 0, /*tp_hash */ | |
220 | 0, /*tp_call*/ | |
221 | 0, /*tp_str*/ | |
222 | 0, /*tp_getattro*/ | |
223 | 0, /*tp_setattro*/ | |
224 | 0, /*tp_as_buffer*/ | |
225 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ | |
226 | "GDB progspace object", /* tp_doc */ | |
227 | 0, /* tp_traverse */ | |
228 | 0, /* tp_clear */ | |
229 | 0, /* tp_richcompare */ | |
230 | 0, /* tp_weaklistoffset */ | |
231 | 0, /* tp_iter */ | |
232 | 0, /* tp_iternext */ | |
233 | 0, /* tp_methods */ | |
234 | 0, /* tp_members */ | |
235 | pspace_getset, /* tp_getset */ | |
236 | 0, /* tp_base */ | |
237 | 0, /* tp_dict */ | |
238 | 0, /* tp_descr_get */ | |
239 | 0, /* tp_descr_set */ | |
240 | 0, /* tp_dictoffset */ | |
241 | 0, /* tp_init */ | |
242 | 0, /* tp_alloc */ | |
243 | pspy_new, /* tp_new */ | |
244 | }; |