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# Copyright (C) 2018-2021 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/>.
import sys
import gdb
import gdb.types
# Following is for Python 3 compatibility...
if sys.version_info[0] > 2:
long = int
class cons_pp(object):
def __init__(self, val):
self._val = val
def to_string(self):
if long(self._val) == 0:
return "nil"
elif long(self._val["type"]) == 0:
return "( . )"
else:
return "%d" % self._val["atom"]["ival"]
def children(self):
if long(self._val) == 0:
return []
elif long(self._val["type"]) == 0:
return [("atom", self._val["atom"])]
else:
return [
("car", self._val["slots"][0]),
("cdr", self._val["slots"][1]),
]
def cons_pp_lookup(val):
if str(val.type) == "struct cons *":
return cons_pp(val)
else:
return None
del gdb.pretty_printers[1:]
gdb.pretty_printers.append(cons_pp_lookup)
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