GDB 7.6.50

gdb/testsuite/gdb.python/py-framefilter.py

Index: gdb/testsuite/gdb.python/py-framefilter.py
diff --git a/gdb/testsuite/gdb.python/py-framefilter.py b/gdb/testsuite/gdb.python/py-framefilter.py
new file mode 100644
index 0000000000000000000000000000000000000000..e70db117286bb0d960e11529c9d960399650b7f0
--- /dev/null
+++ b/gdb/testsuite/gdb.python/py-framefilter.py
@@ -0,0 +1,129 @@
+# Copyright (C) 2013 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the GDB testsuite.  It tests Python-based
+# frame-filters.
+import gdb
+import itertools
+from gdb.FrameDecorator import FrameDecorator
+import copy
+
+class Reverse_Function (FrameDecorator):
+
+    def __init__(self, fobj):
+        super(Reverse_Function, self).__init__(fobj)
+        self.fobj = fobj
+
+    def function (self):
+        fname = str (self.fobj.function())
+        if (fname == None or fname == ""):
+            return None
+        else:
+            fname = fname[::-1]
+        return fname
+
+class Dummy (FrameDecorator):
+
+    def __init__(self, fobj):
+        super(Dummy, self).__init__(fobj)
+        self.fobj = fobj
+
+    def function (self):
+        return "Dummy function"
+
+    def address (self):
+        return 0x123
+
+    def filename (self):
+        return "Dummy filename"
+
+    def frame_args (self):
+        return [("Foo",gdb.Value(12)),("Bar","Stuff"), ("FooBar",42)]
+
+    def frame_locals (self):
+        return []
+
+    def line (self):
+        return 0
+
+    def elided (self):
+        return None
+
+class FrameFilter ():
+
+    def __init__ (self):
+        self.name = "Reverse"
+        self.priority = 100
+        self.enabled = True
+        gdb.frame_filters [self.name] = self
+
+    def filter (self, frame_iter):
+        # Python 3.x moved the itertools.imap functionality to map(),
+        # so check if it is available.
+        if hasattr(itertools, "imap"):
+            frame_iter = itertools.imap (Reverse_Function,
+                                         frame_iter)
+        else:
+            frame_iter = map(Reverse_Function, frame_iter)
+
+        return frame_iter
+
+class ElidingFrameDecorator(FrameDecorator):
+
+    def __init__(self, frame, elided_frames):
+        super(ElidingFrameDecorator, self).__init__(frame)
+        self.elided_frames = elided_frames
+
+    def elided(self):
+        return iter(self.elided_frames)
+
+class ElidingIterator:
+    def __init__(self, ii):
+        self.input_iterator = ii
+
+    def __iter__(self):
+        return self
+
+    def next(self):
+        frame = next(self.input_iterator)
+        if str(frame.function()) != 'func1':
+            return frame
+
+        # Suppose we want to return the 'func1' frame but elide the
+        # next frame.  E.g., if call in our interpreter language takes
+        # two C frames to implement, and the first one we see is the
+        # "sentinel".
+        elided = next(self.input_iterator)
+        return ElidingFrameDecorator(frame, [elided])
+
+    # Python 3.x requires __next__(self) while Python 2.x requires
+    # next(self).  Define next(self), and for Python 3.x create this
+    # wrapper.
+    def __next__(self):
+        return self.next()
+
+class FrameElider ():
+
+    def __init__ (self):
+        self.name = "Elider"
+        self.priority = 900
+        self.enabled = True
+        gdb.frame_filters [self.name] = self
+
+    def filter (self, frame_iter):
+        return ElidingIterator (frame_iter)
+
+FrameFilter()
+FrameElider()