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81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
# Copyright (C) 2008-2020 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 GDB's handling of
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# bad python pretty printers.
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# Test a printer with a bad children iterator.
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import re
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import gdb.printing
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class BadChildrenContainerPrinter1(object):
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"""Children iterator doesn't return a tuple of two elements."""
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return 'container %s with %d elements' % (self.val['name'], self.val['len'])
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@staticmethod
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def _bad_iterator(pointer, len):
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start = pointer
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end = pointer + len
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while pointer != end:
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yield 'intentional violation of children iterator protocol'
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pointer += 1
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def children(self):
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return self._bad_iterator(self.val['elements'], self.val['len'])
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class BadChildrenContainerPrinter2(object):
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"""Children iterator returns a tuple of two elements with bad values."""
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return 'container %s with %d elements' % (self.val['name'], self.val['len'])
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@staticmethod
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def _bad_iterator(pointer, len):
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start = pointer
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end = pointer + len
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while pointer != end:
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# The first argument is supposed to be a string.
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yield (42, 'intentional violation of children iterator protocol')
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pointer += 1
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def children(self):
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return self._bad_iterator(self.val['elements'], self.val['len'])
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def build_pretty_printer():
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pp = gdb.printing.RegexpCollectionPrettyPrinter("bad-printers")
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pp.add_printer('container1', '^container$',
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BadChildrenContainerPrinter1)
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pp.add_printer('container2', '^container$',
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BadChildrenContainerPrinter2)
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return pp
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my_pretty_printer = build_pretty_printer()
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gdb.printing.register_pretty_printer(gdb, my_pretty_printer)
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