1 # Copyright (C) 2013-2016 Free Software Foundation, Inc.
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.
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.
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/>.
16 # This file is part of the GDB testsuite. It tests Python-based
20 from gdb.FrameDecorator import FrameDecorator
23 class Reverse_Function (FrameDecorator):
25 def __init__(self, fobj):
26 super(Reverse_Function, self).__init__(fobj)
30 fname = str (self.fobj.function())
31 if (fname == None or fname == ""):
33 if fname == 'end_func':
34 extra = self.fobj.inferior_frame().read_var('str').string()
37 fname = fname[::-1] + extra
40 class Dummy (FrameDecorator):
42 def __init__(self, fobj):
43 super(Dummy, self).__init__(fobj)
47 return "Dummy function"
53 return "Dummy filename"
55 def frame_args (self):
56 return [("Foo",gdb.Value(12)),("Bar","Stuff"), ("FooBar",42)]
58 def frame_locals (self):
73 gdb.frame_filters [self.name] = self
75 def filter (self, frame_iter):
76 # Python 3.x moved the itertools.imap functionality to map(),
77 # so check if it is available.
78 if hasattr(itertools, "imap"):
79 frame_iter = itertools.imap (Reverse_Function,
82 frame_iter = map(Reverse_Function, frame_iter)
86 class ElidingFrameDecorator(FrameDecorator):
88 def __init__(self, frame, elided_frames):
89 super(ElidingFrameDecorator, self).__init__(frame)
90 self.elided_frames = elided_frames
93 return iter(self.elided_frames)
96 # Regression test for an overflow in the python layer.
97 bitsize = 8 * gdb.lookup_type('void').pointer().sizeof
98 mask = (1 << bitsize) - 1
99 return 0xffffffffffffffff & mask
101 class ElidingIterator:
102 def __init__(self, ii):
103 self.input_iterator = ii
109 frame = next(self.input_iterator)
110 if str(frame.function()) != 'func1':
113 # Suppose we want to return the 'func1' frame but elide the
114 # next frame. E.g., if call in our interpreter language takes
115 # two C frames to implement, and the first one we see is the
117 elided = next(self.input_iterator)
118 return ElidingFrameDecorator(frame, [elided])
120 # Python 3.x requires __next__(self) while Python 2.x requires
121 # next(self). Define next(self), and for Python 3.x create this
126 class FrameElider ():
132 gdb.frame_filters [self.name] = self
134 def filter (self, frame_iter):
135 return ElidingIterator (frame_iter)
137 # A simple decorator that gives an error when computing the function.
138 class ErrorInName(FrameDecorator):
139 def __init__(self, frame):
140 FrameDecorator.__init__(self, frame)
143 raise RuntimeError('whoops')
145 # A filter that supplies buggy frames. Disabled by default.
151 gdb.frame_filters [self.name] = self
153 def filter(self, frame_iter):
154 # Python 3.x moved the itertools.imap functionality to map(),
155 # so check if it is available.
156 if hasattr(itertools, "imap"):
157 return itertools.imap (ErrorInName, frame_iter)
159 return map(ErrorInName, frame_iter)