gdb/testsuite/gdb.python/py-format-string.py

   1 # Copyright (C) 2008-2024 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 # This file is part of the GDB testsuite.  It tests python pretty
  17 # printers.
  18
  19 import gdb
  20
  21 saved_options = {}
  22
  23
  24 class PointPrinter(object):
  25     def __init__(self, val):
  26         self.val = val
  27
  28     def to_string(self):
  29         global saved_options
  30         saved_options = gdb.print_options()
  31         if saved_options["summary"]:
  32             return "No Data"
  33         return "Pretty Point (%s, %s)" % (self.val["x"], self.val["y"])
  34
  35
  36 def test_lookup_function(val):
  37     "Look-up and return a pretty-printer that can print val."
  38
  39     # Get the type.
  40     type = val.type
  41
  42     # If it points to a reference, get the reference.
  43     if type.code == gdb.TYPE_CODE_REF:
  44         type = type.target()
  45
  46     # Get the unqualified type, stripped of typedefs.
  47     type = type.unqualified().strip_typedefs()
  48
  49     # Get the type name.
  50     typename = type.tag
  51
  52     if typename == "point":
  53         return PointPrinter(val)
  54
  55     return None
  56
  57
  58 gdb.pretty_printers.append(test_lookup_function)