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# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
import gdb
import six
from libreoffice.util import printing
class SvArrayPrinter(object):
'''Prints macro-declared arrays from svl module'''
def __init__(self, typename, value):
self.typename = typename
self.value = value
def to_string(self):
if int(self.value['nA']):
return "%s of length %d" % (self.typename, self.value['nA'])
else:
return "empty " + self.typename
def children(self):
return self._iterator(self.value['pData'], self.value['nA'])
def display_hint(self):
return 'array'
class _iterator(six.Iterator):
def __init__(self, data, count):
self.data = data
self.count = count
self.pos = 0
self._check_invariant()
def __iter__(self):
return self
def __next__(self):
if self.pos == self.count:
raise StopIteration()
pos = self.pos
elem = self.data[pos]
self.pos = self.pos + 1
self._check_invariant()
return (str(pos), elem)
def _check_invariant(self):
assert self.count >= 0
if self.count > 0:
assert self.data
assert self.pos >= 0
assert self.pos <= self.count
@staticmethod
def query(type):
if type.code == gdb.TYPE_CODE_REF:
type = type.target()
type = type.unqualified().strip_typedefs()
if not type.tag:
return False
ushort = gdb.lookup_type('sal_uInt16')
conforming = True
for field in type.fields():
if field.name == 'pData':
conforming = field.type.code == gdb.TYPE_CODE_PTR
elif field.name == 'nFree':
conforming = field.type == ushort
elif field.name == 'nA':
conforming = field.type == ushort
else:
conforming = False
if not conforming:
return False
try:
gdb.lookup_type('FnForEach_' + type.tag)
except RuntimeError:
return False
return True
printer = None
def build_pretty_printers():
global printer
printer = printing.Printer("libreoffice/svl")
# macro-based arrays from svl module
printer.add('SvArray', SvArrayPrinter, SvArrayPrinter.query)
def register_pretty_printers(obj):
printing.register_pretty_printer(printer, obj)
build_pretty_printers()
# vim:set shiftwidth=4 softtabstop=4 expandtab:
|
