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# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
# GDB pretty printers for Boost.Unordered.
#
# Copyright (C) 2012 Red Hat, Inc., David Tardon <dtardon@redhat.com>
#
# This file is part of boost-gdb-printers.
#
# 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/>.
import gdb
import six
from boost.lib.unordered import Map, Set
import boost.util.printing as printing
class PrinterBase(object):
'''Contains common functionality for printing Boost.Unordered types'''
def __init__(self, typename, value, container, iterator):
self.typename = typename
self.impl = container(value)
self.iterator = iterator
def to_string(self):
if self.impl.empty():
return "empty " + self.typename
else:
return "%s with %s elements" % (self.typename, len(self.impl))
def children(self):
return self.iterator(iter(self.impl))
class UnorderedMapPrinter(PrinterBase):
def __init__(self, typename, value):
super(UnorderedMapPrinter, self).__init__(typename, value, Map, self._iterator)
def display_hint(self):
return 'map'
class _iterator(six.Iterator):
def __init__(self, impl):
self.impl = impl
self.value = None
self.step = True
def __iter__(self):
return self
def __next__(self):
if self.step:
self.value = six.advance_iterator(self.impl)
value = self.value[0]
else:
value = self.value[1]
self.step = not self.step
return ("", value)
class UnorderedSetPrinter(PrinterBase):
def __init__(self, typename, value):
super(UnorderedSetPrinter, self).__init__(typename, value, Set, self._iterator)
def display_hint(self):
return 'array'
class _iterator(six.Iterator):
def __init__(self, impl):
self.impl = impl
def __iter__(self):
return self
def __next__(self):
return ("", six.advance_iterator(self.impl)[1])
printer = None
def build_pretty_printers():
global printer
if printer != None:
return
printer = printing.Printer("boost.unordered")
printer.add('boost::unordered_map', UnorderedMapPrinter)
printer.add('boost::unordered_multimap', UnorderedMapPrinter)
printer.add('boost::unordered_multiset', UnorderedSetPrinter)
printer.add('boost::unordered_set', UnorderedSetPrinter)
def register_pretty_printers(obj):
printing.register_pretty_printer(printer, obj)
build_pretty_printers()
# vim:set filetype=python shiftwidth=4 softtabstop=4 expandtab:
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