248 lines
7.6 KiB
Python
248 lines
7.6 KiB
Python
# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
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# GDB pretty printers for Boost.Pointer Container.
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#
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# Copyright (C) 2012 Red Hat, Inc., David Tardon <dtardon@redhat.com>
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#
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# This file is part of boost-gdb-printers.
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#
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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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import gdb
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import six
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from boost.lib.unordered import Map, Set
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import boost.util.printing as printing
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std = None
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class PtrStdPrinterBase(object):
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def __init__(self, typename, value, seq_tag):
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self._import_std()
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self.typename = typename
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self.value = value
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# (try to) init printer of underlying std sequence and get elements
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printer = self._get_sequence_printer(seq_tag)
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if printer:
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seq = value['c_']
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if str(seq.type.strip_typedefs()).startswith('std::__debug::'):
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seq_typename = 'std::__debug::%s' % seq_tag
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else:
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seq_typename = 'std::%s' % seq_tag
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self.sequence = list(printer(seq_typename, seq).children())
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else:
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self.sequence = None
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def to_string(self):
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if self.sequence is not None:
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length = len(self.sequence)
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if length:
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return "%s %s" % (self.typename, self.print_size(length))
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else:
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return "empty %s" % self.typename
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else:
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return "opaque %s" % self.typename
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def children(self):
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return self._iterator(self.sequence, self.value.type.template_argument(0))
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class _iterator(six.Iterator):
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def __init__(self, sequence, type):
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self.impl = iter(sequence)
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self.type = type.pointer()
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def __iter__(self):
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return self
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def __next__(self):
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(index, value) = six.advance_iterator(self.impl)
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return (index, value.cast(self.type).dereference())
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def _import_std(self):
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global std
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if not std:
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try:
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import libstdcxx.v6.printers
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std = libstdcxx.v6.printers
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except Exception:
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pass
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def _get_sequence_printer(self, typename):
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if typename == "deque":
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return std.StdDequePrinter
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if typename == "list":
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return std.StdListPrinter
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if typename == "map":
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return std.StdMapPrinter
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if typename == "set":
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return std.StdSetPrinter
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if typename == "vector":
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return std.StdVectorPrinter
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class PtrSequencePrinter(PtrStdPrinterBase):
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def __init__(self, typename, value, seq_tag):
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super(PtrSequencePrinter, self).__init__(typename, value, seq_tag)
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def print_size(self, size):
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return "of length %s" % size
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def display_hint(self):
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return 'array'
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class PtrSetPrinter(PtrStdPrinterBase):
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def __init__(self, typename, value):
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super(PtrSetPrinter, self).__init__(typename, value, 'set')
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def print_size(self, size):
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return "with %s elements" % size
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def display_hint(self):
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return 'array'
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class PtrMapPrinter(PtrStdPrinterBase):
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def __init__(self, typename, value):
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super(PtrMapPrinter, self).__init__(typename, value, 'map')
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def children(self):
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type = self.value.type
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return self._iterator(self.sequence, type.template_argument(0), type.template_argument(1))
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class _iterator(six.Iterator):
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def __init__(self, sequence, key_type, value_type):
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self.impl = iter(sequence)
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self.key_type = key_type
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self.value_type = value_type.pointer()
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self.key = True
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def __iter__(self):
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return self
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def __next__(self):
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(index, value) = six.advance_iterator(self.impl)
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if self.key:
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value = value.cast(self.key_type)
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else:
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value = value.cast(self.value_type).dereference()
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self.key = not self.key
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return (index, value)
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def display_hint(self):
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return 'map'
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def print_size(self, size):
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return "with %s elements" % (size / 2)
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class PtrBoostPrinterBase(object):
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def __init__(self, typename, value, container, iterator, value_type):
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self.typename = typename
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self.impl = container(value['c_'])
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self.iterator = iterator
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self.value_type = value_type.pointer()
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def to_string(self):
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if self.impl.empty():
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return "empty " + self.typename
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else:
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return "%s with %s elements" % (self.typename, len(self.impl))
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def children(self):
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return self.iterator(iter(self.impl), self.value_type)
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class PtrUnorderedMapPrinter(PtrBoostPrinterBase):
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def __init__(self, typename, value):
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super(PtrUnorderedMapPrinter, self).__init__(typename, value, Map, self._iterator,
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value.type.template_argument(1))
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def display_hint(self):
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return 'map'
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class _iterator(six.Iterator):
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def __init__(self, impl, value_type):
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self.impl = impl
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self.step = True
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self.value = None
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self.value_type = value_type
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def __iter__(self):
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return self
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def __next__(self):
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if self.step:
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self.value = six.advance_iterator(self.impl)
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value = self.value[0]
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else:
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value = self.value[1].cast(self.value_type).dereference()
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self.step = not self.step
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return ("", value)
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class PtrUnorderedSetPrinter(PtrBoostPrinterBase):
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def __init__(self, typename, value):
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super(PtrUnorderedSetPrinter, self).__init__(typename, value, Set, self._iterator,
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value.type.template_argument(0))
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def display_hint(self):
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return 'array'
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class _iterator(six.Iterator):
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def __init__(self, impl, value_type):
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self.impl = impl
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self.value_type = value_type
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def __iter__(self):
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return self
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def __next__(self):
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return ("", six.advance_iterator(self.impl)[1].cast(self.value_type).dereference())
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printer = None
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def build_pretty_printers():
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global printer
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if printer is not None:
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return
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printer = printing.Printer("boost.ptr_container")
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printer.add('boost::ptr_deque', (lambda t, v: PtrSequencePrinter(t, v, "deque")))
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printer.add('boost::ptr_list', (lambda t, v: PtrSequencePrinter(t, v, "list")))
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printer.add('boost::ptr_map', PtrMapPrinter)
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printer.add('boost::ptr_multimap', PtrMapPrinter)
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printer.add('boost::ptr_multiset', PtrSetPrinter)
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printer.add('boost::ptr_set', PtrSetPrinter)
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printer.add('boost::ptr_unordered_map', PtrUnorderedMapPrinter)
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printer.add('boost::ptr_unordered_multimap', PtrUnorderedMapPrinter)
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printer.add('boost::ptr_unordered_multiset', PtrUnorderedSetPrinter)
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printer.add('boost::ptr_unordered_set', PtrUnorderedSetPrinter)
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printer.add('boost::ptr_vector', (lambda t, v: PtrSequencePrinter(t, v, "vector")))
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def register_pretty_printers(obj):
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printing.register_pretty_printer(printer, obj)
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build_pretty_printers()
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# vim:set filetype=python shiftwidth=4 softtabstop=4 expandtab:
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