1 # Copyright (C) 2013-2023 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
24 class Reverse_Function(FrameDecorator):
25 def __init__(self, fobj):
26 super(Reverse_Function, self).__init__(fobj)
30 fname = str(self.fobj.function())
33 if fname == "end_func":
34 extra = self.fobj.inferior_frame().read_var("str").string()
37 fname = fname[::-1] + extra
41 class Dummy(FrameDecorator):
42 def __init__(self, fobj):
43 super(Dummy, self).__init__(fobj)
47 return "Dummy function"
53 return "Dummy filename"
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, frame_iter)
81 frame_iter = map(Reverse_Function, frame_iter)
86 class ElidingFrameDecorator(FrameDecorator):
87 def __init__(self, frame, elided_frames):
88 super(ElidingFrameDecorator, self).__init__(frame)
89 self.elided_frames = elided_frames
92 return iter(self.elided_frames)
95 # Regression test for an overflow in the python layer.
96 bitsize = 8 * gdb.lookup_type("void").pointer().sizeof
97 mask = (1 << bitsize) - 1
98 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
132 gdb.frame_filters[self.name] = self
134 def filter(self, frame_iter):
135 return ElidingIterator(frame_iter)
138 # This is here so the test can change the kind of error that is
140 name_error = RuntimeError
142 # A simple decorator that gives an error when computing the function.
143 class ErrorInName(FrameDecorator):
144 def __init__(self, frame):
145 FrameDecorator.__init__(self, frame)
148 raise name_error("whoops")
151 # A filter that supplies buggy frames. Disabled by default.
157 gdb.frame_filters[self.name] = self
159 def filter(self, frame_iter):
160 # Python 3.x moved the itertools.imap functionality to map(),
161 # so check if it is available.
162 if hasattr(itertools, "imap"):
163 return itertools.imap(ErrorInName, frame_iter)
165 return map(ErrorInName, frame_iter)