118 lines
3.1 KiB
Python
118 lines
3.1 KiB
Python
# Copyright (C) 2013 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the GDB testsuite. It tests Python-based
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# frame-filters.
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import gdb
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import itertools
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from gdb.FrameDecorator import FrameDecorator
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import copy
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class Reverse_Function (FrameDecorator):
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def __init__(self, fobj):
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super(Reverse_Function, self).__init__(fobj)
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self.fobj = fobj
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def function (self):
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fname = str (self.fobj.function())
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if (fname == None or fname == ""):
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return None
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else:
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fname = fname[::-1]
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return fname
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class Dummy (FrameDecorator):
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def __init__(self, fobj):
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super(Dummy, self).__init__(fobj)
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self.fobj = fobj
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def function (self):
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return "Dummy function"
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def address (self):
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return 0x123
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def filename (self):
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return "Dummy filename"
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def frame_args (self):
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return [("Foo",gdb.Value(12)),("Bar","Stuff"), ("FooBar",42)]
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def frame_locals (self):
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return []
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def line (self):
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return 0
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def elided (self):
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return None
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class FrameFilter ():
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def __init__ (self):
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self.name = "Reverse"
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self.priority = 100
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self.enabled = True
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gdb.frame_filters [self.name] = self
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def filter (self, frame_iter):
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frame_iter = itertools.imap (Reverse_Function,
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frame_iter)
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return frame_iter
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class ElidingFrameDecorator(FrameDecorator):
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def __init__(self, frame, elided_frames):
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super(ElidingFrameDecorator, self).__init__(frame)
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self.elided_frames = elided_frames
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def elided(self):
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return iter(self.elided_frames)
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class ElidingIterator:
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def __init__(self, ii):
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self.input_iterator = ii
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def __iter__(self):
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return self
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def next(self):
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frame = next(self.input_iterator)
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if str(frame.function()) != 'func1':
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return frame
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# Suppose we want to return the 'func1' frame but elide the
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# next frame. E.g., if call in our interpreter language takes
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# two C frames to implement, and the first one we see is the
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# "sentinel".
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elided = next(self.input_iterator)
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return ElidingFrameDecorator(frame, [elided])
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class FrameElider ():
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def __init__ (self):
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self.name = "Elider"
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self.priority = 900
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self.enabled = True
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gdb.frame_filters [self.name] = self
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def filter (self, frame_iter):
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return ElidingIterator (frame_iter)
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FrameFilter()
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FrameElider()
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