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# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
# Version: MPL 1.1 / GPLv3+ / LGPLv3+
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License or as specified alternatively below. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# Major Contributor(s):
# Copyright (C) 2010 Red Hat, Inc., David Tardon <dtardon@redhat.com>
# (initial developer)
#
# All Rights Reserved.
#
# For minor contributions see the git repository.
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 3 or later (the "GPLv3+"), or
# the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
# in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
# instead of those above.
from collections import Mapping
import gdb
import re
from libreoffice.util.compatibility import use_gdb_printing
class SimplePrinter(object):
def __init__(self, name, function):
self.name = name
self.function = function
self.enabled = True
def invoke(self, val):
if not self.enabled:
return None
return self.function(self.name, val)
class NameLookup(Mapping):
def __init__(self):
self.map = {}
self.name_regex = re.compile('^([\w:]+)(<.*>)?')
def add(self, name, printer):
self.map[name] = printer
def __len__(self):
return len(self.map)
def __getitem__(self, type):
typename = self._basic_type(type)
if typename and typename in self.map:
return self.map[typename]
return None
def __iter__(self):
return self.map
def _basic_type(self, type):
basic_type = self.basic_type(type)
if basic_type:
match = self.name_regex.match(basic_type)
if match:
return match.group(1)
return None
@staticmethod
def basic_type(type):
if type.code == gdb.TYPE_CODE_REF:
type = type.target()
type = type.unqualified().strip_typedefs()
return type.tag
class FunctionLookup(Mapping):
def __init__(self):
self.map = {}
def add(self, test, printer):
self.map[test] = printer
def __len__(self):
return len(self.map)
def __getitem__(self, type):
for (test, printer) in self.map.iteritems():
if test(type):
return printer
return None
def __iter__(self):
return self.map
class Printer(object):
def __init__(self, name):
self.name = name
self.subprinters = []
self.name_lookup = NameLookup()
self.func_lookup = FunctionLookup()
self.enabled = True
def add(self, name, function, lookup = None):
printer = SimplePrinter(name, function)
self.subprinters.append(printer)
if not lookup:
self.name_lookup.add(name, printer)
else:
self.func_lookup.add(lookup, printer)
def __call__(self, val):
printer = self.name_lookup[val.type]
if not printer:
printer = self.func_lookup[val.type]
if printer:
return printer.invoke(val)
return None
def register_pretty_printer(printer, obj):
'''Registers printer with objfile'''
if use_gdb_printing:
gdb.printing.register_pretty_printer(obj, printer)
else:
if obj is None:
obj = gdb
obj.pretty_printers.append(printer)
# vim:set shiftwidth=4 softtabstop=4 expandtab:
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