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[binutils.git] / gdb / testsuite / gdb.python / py-mi-var-info-path-expression.py
1 # Copyright (C) 2018-2021 Free Software Foundation, Inc.
2
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
7 #
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 # GNU General Public License for more details.
12 #
13 # You should have received a copy of the GNU General Public License
14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16 import sys
17 import gdb
18 import gdb.types
19
20 # Following is for Python 3 compatibility...
21 if sys.version_info[0] > 2:
22     long = int
23
24
25 class cons_pp(object):
26     def __init__(self, val):
27         self._val = val
28
29     def to_string(self):
30         if long(self._val) == 0:
31             return "nil"
32         elif long(self._val["type"]) == 0:
33             return "( . )"
34         else:
35             return "%d" % self._val["atom"]["ival"]
36
37     def children(self):
38         if long(self._val) == 0:
39             return []
40         elif long(self._val["type"]) == 0:
41             return [("atom", self._val["atom"])]
42         else:
43             return [
44                 ("car", self._val["slots"][0]),
45                 ("cdr", self._val["slots"][1]),
46             ]
47
48
49 def cons_pp_lookup(val):
50     if str(val.type) == "struct cons *":
51         return cons_pp(val)
52     else:
53         return None
54
55
56 del gdb.pretty_printers[1:]
57 gdb.pretty_printers.append(cons_pp_lookup)
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