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

   1 # Copyright (C) 2018-2019 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 [
  42         ('atom', self._val['atom'])
  43       ]
  44     else:
  45       return [
  46         ('car' ,  self._val["slots"][0]),
  47         ('cdr' ,  self._val["slots"][1]),
  48       ]
  49
  50 def cons_pp_lookup(val):
  51   if str(val.type) == 'struct cons *':
  52     return cons_pp(val)
  53   else:
  54     return None
  55
  56 del gdb.pretty_printers[1:]
  57 gdb.pretty_printers.append(cons_pp_lookup)