| Current File : //usr/share/gdb/python/gdb/command/type_printers.py |
# Type printer commands.
# Copyright (C) 2010-2013 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/>.
import copy
import gdb
"""GDB commands for working with type-printers."""
class InfoTypePrinter(gdb.Command):
"""GDB command to list all registered type-printers.
Usage: info type-printers
"""
def __init__ (self):
super(InfoTypePrinter, self).__init__("info type-printers",
gdb.COMMAND_DATA)
def list_type_printers(self, type_printers):
"""Print a list of type printers."""
# A potential enhancement is to provide an option to list printers in
# "lookup order" (i.e. unsorted).
sorted_type_printers = sorted (copy.copy(type_printers),
key = lambda x: x.name)
for printer in sorted_type_printers:
if printer.enabled:
enabled = ''
else:
enabled = " [disabled]"
print (" %s%s" % (printer.name, enabled))
def invoke(self, arg, from_tty):
"""GDB calls this to perform the command."""
sep = ''
for objfile in gdb.objfiles():
if objfile.type_printers:
print ("%sType printers for %s:" % (sep, objfile.filename))
self.list_type_printers(objfile.type_printers)
sep = '\n'
if gdb.current_progspace().type_printers:
print ("%sType printers for program space:" % sep)
self.list_type_printers(gdb.current_progspace().type_printers)
sep = '\n'
if gdb.type_printers:
print ("%sGlobal type printers:" % sep)
self.list_type_printers(gdb.type_printers)
class _EnableOrDisableCommand(gdb.Command):
def __init__(self, setting, name):
super(_EnableOrDisableCommand, self).__init__(name, gdb.COMMAND_DATA)
self.setting = setting
def set_some(self, name, printers):
result = False
for p in printers:
if name == p.name:
p.enabled = self.setting
result = True
return result
def invoke(self, arg, from_tty):
"""GDB calls this to perform the command."""
for name in arg.split():
ok = False
for objfile in gdb.objfiles():
if self.set_some(name, objfile.type_printers):
ok = True
if self.set_some(name, gdb.current_progspace().type_printers):
ok = True
if self.set_some(name, gdb.type_printers):
ok = True
if not ok:
print ("No type printer named '%s'" % name)
def add_some(self, result, word, printers):
for p in printers:
if p.name.startswith(word):
result.append(p.name)
def complete(self, text, word):
result = []
for objfile in gdb.objfiles():
self.add_some(result, word, objfile.type_printers)
self.add_some(result, word, gdb.current_progspace().type_printers)
self.add_some(result, word, gdb.type_printers)
return result
class EnableTypePrinter(_EnableOrDisableCommand):
"""GDB command to enable the specified type printer.
Usage: enable type-printer NAME
NAME is the name of the type-printer.
"""
def __init__(self):
super(EnableTypePrinter, self).__init__(True, "enable type-printer")
class DisableTypePrinter(_EnableOrDisableCommand):
"""GDB command to disable the specified type-printer.
Usage: disable type-printer NAME
NAME is the name of the type-printer.
"""
def __init__(self):
super(DisableTypePrinter, self).__init__(False, "disable type-printer")
InfoTypePrinter()
EnableTypePrinter()
DisableTypePrinter()