gdb/testsuite/gdb.dap/stack-format.py

   1 # Copyright (C) 2023-2024 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
  17 import gdb
  18 import itertools
  19
  20 from gdb.FrameDecorator import DAPFrameDecorator
  21
  22
  23 class ElidingFrameDecorator(DAPFrameDecorator):
  24     def __init__(self, frame, elided_frames):
  25         super(ElidingFrameDecorator, self).__init__(frame)
  26         self.elided_frames = elided_frames
  27
  28     def elided(self):
  29         return iter(self.elided_frames)
  30
  31
  32 class ElidingIterator:
  33     def __init__(self, ii):
  34         self.input_iterator = ii
  35
  36     def __iter__(self):
  37         return self
  38
  39     def __next__(self):
  40         frame = next(self.input_iterator)
  41         if str(frame.function()) != "function":
  42             return frame
  43
  44         # Elide the next three frames.
  45         elided = []
  46         elided.append(next(self.input_iterator))
  47         elided.append(next(self.input_iterator))
  48         elided.append(next(self.input_iterator))
  49
  50         return ElidingFrameDecorator(frame, elided)
  51
  52
  53 class FrameElider:
  54     def __init__(self):
  55         self.name = "Elider"
  56         self.priority = 900
  57         self.enabled = True
  58         gdb.frame_filters[self.name] = self
  59
  60     def filter(self, frame_iter):
  61         return ElidingIterator(frame_iter)
  62
  63
  64 FrameElider()