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      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 itertools
     18 
     19 import gdb
     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()
     65