gdb/testsuite/gdb.python/py-mi-var-info-path-expression.py

   1 # Copyright (C) 2018-2023 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
  21 class cons_pp(object):
  22     def __init__(self, val):
  23         self._val = val
  24
  25     def to_string(self):
  26         if int(self._val) == 0:
  27             return "nil"
  28         elif int(self._val["type"]) == 0:
  29             return "( . )"
  30         else:
  31             return "%d" % self._val["atom"]["ival"]
  32
  33     def children(self):
  34         if int(self._val) == 0:
  35             return []
  36         elif int(self._val["type"]) == 0:
  37             return [("atom", self._val["atom"])]
  38         else:
  39             return [
  40                 ("car", self._val["slots"][0]),
  41                 ("cdr", self._val["slots"][1]),
  42             ]
  43
  44
  45 def cons_pp_lookup(val):
  46     if str(val.type) == "struct cons *":
  47         return cons_pp(val)
  48     else:
  49         return None
  50
  51
  52 del gdb.pretty_printers[1:]
  53 gdb.pretty_printers.append(cons_pp_lookup)