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qt.py
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#
# LLDB data formatters for Qt types
# Copyright 2016 Aetf <[email protected]>
#
# 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 2 of
# the License or (at your option) version 3 or any later version
# accepted by the membership of KDE e.V. (or its successor approved
# by the membership of KDE e.V.), which shall act as a proxy
# defined in Section 14 of version 3 of the license.
#
# 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/>.
#
from __future__ import print_function
import time
import datetime as dt
import string
from urllib.parse import urlsplit, urlunsplit
import locale
import lldb
from helpers import (HiddenMemberProvider, quote, unquote, unichr, toSBPointer, Iterator, validAddr,
validPointer, invoke, rename, canonicalized_type_name)
def __lldb_init_module(debugger, unused):
# debugger.HandleCommand('type summary add -x "^QString$" -e -F qt.QString_SummaryProvider')
# debugger.HandleCommand('type synthetic add QString -w kdevelop-qt -l qt.QStringFormatter')
# debugger.HandleCommand('type summary add QString -w kdevelop-qt -F qt.QStringSummaryProvider')
debugger.HandleCommand('type summary add QChar -w kdevelop-qt -F qt.QCharSummaryProvider')
debugger.HandleCommand('type synthetic add QByteArray -w kdevelop-qt -l qt.QByteArrayFormatter')
debugger.HandleCommand('type summary add QByteArray -w kdevelop-qt -e -F qt.QByteArraySummaryProvider')
# debugger.HandleCommand('type synthetic add -x "^QList<.+>$" -w kdevelop-qt -l qt.QListFormatter')
# debugger.HandleCommand('type summary add -x "^QList<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
#
# debugger.HandleCommand('type synthetic add QStringList -w kdevelop-qt -l qt.QStringListFormatter')
# debugger.HandleCommand('type summary add QStringList -w kdevelop-qt -e -s "<size=${svar%#}>"')
#
# debugger.HandleCommand('type synthetic add -x "^QQueue<.+>$" -w kdevelop-qt -l qt.QQueueFormatter')
# debugger.HandleCommand('type summary add -x "^QQueue<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
#
# debugger.HandleCommand('type synthetic add -x "^QVector<.+>$" -w kdevelop-qt -l qt.QVectorFormatter')
# debugger.HandleCommand('type summary add -x "^QVector<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
#
# debugger.HandleCommand('type synthetic add -x "^QStack<.+>$" -w kdevelop-qt -l qt.QStackFormatter')
# debugger.HandleCommand('type summary add -x "^QStack<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
#
# debugger.HandleCommand('type synthetic add -x "^QLinkedList<.+>$" -w kdevelop-qt -l qt.QLinkedListFormatter')
# debugger.HandleCommand('type summary add -x "^QLinkedList<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
#
debugger.HandleCommand('type synthetic add -x "^QMapNode<.+>$" -w kdevelop-qt -l qt.KeyValueFormatter')
debugger.HandleCommand('type summary add -x "^QMapNode<.+>$" -w kdevelop-qt -F qt.KeyValueSummaryProvider')
debugger.HandleCommand('type synthetic add -x "^QMap<.+>$" -w kdevelop-qt -l qt.QMapFormatter')
debugger.HandleCommand('type summary add -x "^QMap<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
debugger.HandleCommand('type synthetic add -x "^QMultiMap<.+>$" -w kdevelop-qt -l qt.QMultiMapFormatter')
debugger.HandleCommand('type summary add -x "^QMultiMap<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
debugger.HandleCommand('type synthetic add -x "^QHashNode<.+>$" -w kdevelop-qt -l qt.KeyValueFormatter')
debugger.HandleCommand('type summary add -x "^QHashNode<.+>$" -w kdevelop-qt -F qt.KeyValueSummaryProvider')
debugger.HandleCommand('type synthetic add -x "^QHash<.+>$" -w kdevelop-qt -l qt.QHashFormatter')
debugger.HandleCommand('type summary add -x "^QHash<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
debugger.HandleCommand('type synthetic add -x "^QMultiHash<.+>$" -w kdevelop-qt -l qt.QMultiHashFormatter')
debugger.HandleCommand('type summary add -x "^QMultiHash<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
debugger.HandleCommand('type synthetic add -x "^QSet<.+>$" -w kdevelop-qt -l qt.QSetFormatter')
debugger.HandleCommand('type summary add -x "^QSet<.+>$" -w kdevelop-qt -e -s "<size=${svar%#}>"')
debugger.HandleCommand('type synthetic add QDate -w kdevelop-qt -l qt.QDateFormatter')
debugger.HandleCommand('type summary add QDate -w kdevelop-qt -e -F qt.QDateSummaryProvider')
debugger.HandleCommand('type synthetic add QTime -w kdevelop-qt -l qt.QTimeFormatter')
debugger.HandleCommand('type summary add -x QTime -w kdevelop-qt -e -F qt.QTimeSummaryProvider')
debugger.HandleCommand('type synthetic add QDateTime -w kdevelop-qt -l qt.QDateTimeFormatter')
debugger.HandleCommand('type summary add -x QDateTime -w kdevelop-qt -e -F qt.QDateTimeSummaryProvider')
# debugger.HandleCommand('type synthetic add QUrl -w kdevelop-qt -l qt.QUrlFormatter')
# debugger.HandleCommand('type summary add QUrl -w kdevelop-qt -e -F qt.QUrlSummaryProvider')
#
# debugger.HandleCommand('type synthetic add QUuid -w kdevelop-qt -l qt.QUuidFormatter')
# debugger.HandleCommand('type summary add QUuid -w kdevelop-qt -F qt.QUuidSummaryProvider')
debugger.HandleCommand('type category enable kdevelop-qt')
def QString_SummaryProvider(valobj, internal_dict):
def make_string_from_pointer_with_offset(F,OFFS, L):
strval = '"'
try:
data = F.GetPointeeData(0, L)
G = data.uint16
for X in range(0, L):
V = G[X]
if V == 0:
continue
strval += unichr(V)
except Exception as e:
pass
strval = strval + '"'
return strval.encode('utf-8')
#qt4.8
def qstring_summary(value):
try:
d = value.GetChildMemberWithName('d')
offset = d.GetChildMemberWithName('alloc').GetValueAsUnsigned()
size = d.GetChildMemberWithName('size').GetValueAsUnsigned()
data = d.GetChildMemberWithName('data')
return make_string_from_pointer_with_offset(data, offset, size)
except Exception as e:
return value
return qstring_summary(valobj)
def printableQString(valobj):
pointer = 0
length = 0
if valobj.IsValid():
d = valobj.GetChildMemberWithName('d')
data = d.GetChildMemberWithName('data')
offset = d.GetChildMemberWithName('offset')
size = d.GetChildMemberWithName('size')
isQt4 = data.IsValid()
size_val = size.GetValueAsSigned(-1)
alloc = d.GetChildMemberWithName('alloc').GetValueAsUnsigned(0)
if isQt4:
alloc += 1
# some sanity check to see if we are dealing with garbage
if size_val < 0 or size_val >= alloc:
return None, 0, 0
tooLarge = u''
if size_val > HiddenMemberProvider._capping_size():
tooLarge = u'...'
size_val = HiddenMemberProvider._capping_size()
if isQt4:
pointer = data.GetValueAsUnsigned(0)
elif offset.IsValid():
pointer = d.GetValueAsUnsigned(0) + offset.GetValueAsUnsigned(0)
else:
qarraydata_t = valobj.GetTarget().FindFirstType('QArrayData')
if qarraydata_t.IsValid():
pointer = d.GetValueAsUnsigned(0) + qarraydata_t.GetByteSize()
else:
pointer = d.GetValueAsUnsigned(0) + 24 # Fallback to hardcoded value
# size in the number of chars, each char is 2 bytes in UTF16
length = size_val * 2
if length == 0:
return u'', pointer, length
try:
error = lldb.SBError()
string_data = valobj.process.ReadMemory(pointer, length, error)
# The QString object might be not yet initialized. In this case size is a bogus value,
# and memory access may fail
if error.Success():
content = string_data.decode('utf-16')
print("printableQString returning", content + tooLarge, pointer, length, flush=TRUE)
return content + tooLarge, pointer, length
except:
pass
return None, 0, 0
def QStringSummaryProvider(valobj, internal_dict):
if valobj.IsValid():
# content = valobj.GetChildMemberWithName('(content)')
# if content.IsValid():
# try:
# error = lldb.SBError()
# rawprintable = content.GetData().GetString(error, 0)
# if error.Success():
# printable = rawprintable.decode()
# return quote(printable)
# except:
# pass
# FIXME: there's no reliable way to pass data from formatter to
# summary provider currently. So directly pull data from inferior
# Something wrong with synthetic provider, or
# no synthetic provider installed, get the content by ourselves
printable, _, _ = printableQString(valobj)
print("QStringSummaryProvider: ", printable)
if printable is not None:
return quote(printable)
return '<Invalid>'
class QStringFormatter(HiddenMemberProvider):
"""A lldb synthetic provider for QString"""
def __init__(self, valobj, internal_dict):
super(QStringFormatter, self).__init__(valobj, internal_dict)
self._qchar_type = valobj.GetTarget().FindFirstType('QChar')
self._qchar_size = self._qchar_type.GetByteSize()
def _update(self):
printable, dataPointer, byteLength = printableQString(self.valobj)
strLength = byteLength / 2
self._num_children = strLength
print("QStringFormatter update: ", printable)
if printable is not None:
for idx in range(0, strLength):
var = self.valobj.CreateValueFromAddress('[{}]'.format(idx),
dataPointer + idx * self._qchar_size,
self._qchar_type)
self._addChild(var)
# self._addChild(('(content)', quote(printable)), hidden=True)
def QCharSummaryProvider(valobj, internal_dict):
if valobj.IsValid():
ucs = valobj.GetChildMemberWithName('ucs').GetValueAsUnsigned(0)
if ucs == 39:
# for '\'', python returns "'" rather than '\''
return u"'\\''"
else:
return unichr(ucs).__repr__()[1:]
return None
def printableQByteArray(valobj):
if valobj.IsValid():
d = valobj.GetChildMemberWithName('d')
data = d.GetChildMemberWithName('data')
offset = d.GetChildMemberWithName('offset')
size = d.GetChildMemberWithName('size')
isQt4 = data.IsValid()
size_val = size.GetValueAsSigned(-1)
alloc = d.GetChildMemberWithName('alloc').GetValueAsUnsigned(0)
if isQt4:
alloc += 1
# sanity check
if size_val < 0 or size_val >= alloc:
return None, 0, 0
tooLarge = u''
if size_val > HiddenMemberProvider._capping_size():
tooLarge = u'...'
size_val = HiddenMemberProvider._capping_size()
if isQt4:
pointer = data.GetValueAsUnsigned(0)
elif offset.IsValid():
pointer = d.GetValueAsUnsigned(0) + offset.GetValueAsUnsigned(0)
else:
pointer = d.GetValueAsUnsigned(0) + 24 # Fallback to hardcoded value
length = size_val
if length == 0:
return u'', pointer, length
try:
error = lldb.SBError()
string_data = valobj.process.ReadMemory(pointer, length, error)
# The object might be not yet initialized. In this case size is a bogus value,
# and memory access may fail
if error.Success():
# replace non-ascii byte with a space and get a printable version
ls = list(string_data)
for idx in range(length):
if ls[idx] in string.printable:
if ls[idx] != "'":
# convert tab, nl, ..., and '\\' to r'\\'
ls[idx] = ls[idx].__repr__()[1:-1]
else:
ls[idx] = r'\x{:02x}'.format(ord(ls[idx]))
content = u''.join(ls)
return content + tooLarge, pointer, length
except:
pass
return None, 0, 0
def QByteArraySummaryProvider(valobj, internal_dict):
if valobj.IsValid():
content = valobj.GetChildMemberWithName('(content)')
if content.IsValid():
summary = content.GetSummary()
if summary is not None:
# unlike QString, we quoted the (content) twice to preserve our own quotation,
# must undo the quotation done by GetSummary
return 'b' + unquote(summary)
# Something wrong with our synthetic provider, get the content by ourselves
printable, _, _ = printableQByteArray(valobj)
if printable is not None:
# first replace " to \", and suround by "", no need to escape other things which
# are handled in printableQByteArray.
return 'b"{}"'.format(printable.replace('"', '\\"'))
return '<Invalid>'
class QByteArrayFormatter(HiddenMemberProvider):
"""A lldb synthetic provider for QByteArray"""
def __init__(self, valobj, internal_dict):
super(QByteArrayFormatter, self).__init__(valobj, internal_dict)
self._char_type = valobj.GetType().GetBasicType(lldb.eBasicTypeChar)
self._char_size = self._char_type.GetByteSize()
def _update(self):
printable, dataPointer, byteLength = printableQByteArray(self.valobj)
self._num_children = byteLength
if printable is not None:
for idx in range(0, self._num_children):
var = self.valobj.CreateValueFromAddress('[{}]'.format(idx),
dataPointer + idx * self._char_size,
self._char_type)
self._addChild(var)
# first replace " to \", and suround by "", no need to escape other things which
# are handled in printableQByteArray.
printable = b'"{}"'.format(printable.replace(b'"', b'\\"'))
self._addChild(('(content)', printable), hidden=True)
class BasicListFormatter(HiddenMemberProvider):
"""A lldb synthetic provider for QList like types"""
def __init__(self, valobj, internal_dict, item_typename):
super(BasicListFormatter, self).__init__(valobj, internal_dict)
if item_typename is None:
self._item_type = valobj.GetType().GetTemplateArgumentType(0)
else:
self._item_type = valobj.GetTarget().FindFirstType(item_typename)
pvoid_type = valobj.GetTarget().GetBasicType(lldb.eBasicTypeVoid).GetPointerType()
self._pvoid_size = pvoid_type.GetByteSize()
# from QTypeInfo::isLarge
isLarge = self._item_type.GetByteSize() > self._pvoid_size
# unfortunately we can't use QTypeInfo<T>::isStatic as it's all inlined, so use
# this list of types that use Q_DECLARE_TYPEINFO(T, Q_MOVABLE_TYPE)
# (obviously it won't work for custom types)
movableTypes = ['QRect', 'QRectF', 'QString', 'QMargins', 'QLocale', 'QChar', 'QDate',
'QTime', 'QDateTime', 'QVector', 'QRegExpr', 'QPoint', 'QPointF', 'QByteArray',
'QSize', 'QSizeF', 'QBitArray', 'QLine', 'QLineF', 'QModelIndex',
'QPersitentModelIndex', 'QVariant', 'QFileInfo', 'QUrl', 'QXmlStreamAttribute',
'QXmlStreamNamespaceDeclaration', 'QXmlStreamNotationDeclaration',
'QXmlStreamEntityDeclaration', 'QPair<int, int>']
movableTypes = [valobj.GetTarget().FindFirstType(t) for t in movableTypes]
# this list of types that use Q_DECLARE_TYPEINFO(T, Q_PRIMITIVE_TYPE) (from qglobal.h)
primitiveTypes = ['bool', 'char', 'signed char', 'unsigned char', 'short', 'unsigned short',
'int', 'unsigned int', 'long', 'unsigned long', 'long long',
'unsigned long long', 'float', 'double']
primitiveTypes = [valobj.GetTarget().FindFirstType(t) for t in primitiveTypes]
if self._item_type in movableTypes or self._item_type in primitiveTypes:
isStatic = False
else:
isStatic = not self._item_type.IsPointerType()
# see QList::Node::t()
self._externalStorage = isLarge or isStatic
# If is external storage, then the node (a void*) is a pointer to item
# else the item is stored inside the node
if self._externalStorage:
self._node_type = self._item_type.GetPointerType()
else:
self._node_type = self._item_type
def _update(self):
d = self.valobj.GetChildMemberWithName('d')
begin = d.GetChildMemberWithName('begin').GetValueAsSigned(-1)
end = d.GetChildMemberWithName('end').GetValueAsSigned(-1)
array = d.GetChildMemberWithName('array')
# sanity check
if begin < 0 or end < 0 or end < begin:
return
self._num_children = end - begin
for idx in range(0, self._num_children):
offset = (begin + idx) * self._pvoid_size
name = '[{}]'.format(idx)
var = array.CreateChildAtOffset(name, offset, self._node_type)
if self._externalStorage:
# can't use var.Dereference() directly, as the returned SBValue has '*' prepended
# to its name. And SBValue name can't be changed once constructed.
var = self.valobj.CreateValueFromData(name, var.GetPointeeData(),
self._item_type)
self._addChild(var)
class QListFormatter(BasicListFormatter):
"""lldb synthetic provider for QList"""
def __init__(self, valobj, internal_dict):
super(QListFormatter, self).__init__(valobj, internal_dict, None)
class QStringListFormatter(BasicListFormatter):
"""lldb synthetic provider for QStringList"""
def __init__(self, valobj, internal_dict):
super(QStringListFormatter, self).__init__(valobj, internal_dict, 'QString')
class QQueueFormatter(BasicListFormatter):
"""lldb synthetic provider for QQueue"""
def __init__(self, valobj, internal_dict):
super(QQueueFormatter, self).__init__(valobj.GetChildAtIndex(0), internal_dict, None)
self.actualobj = valobj
def update(self):
self.valobj = self.actualobj.GetChildAtIndex(0)
super(QQueueFormatter, self).update()
class BasicVectorFormatter(HiddenMemberProvider):
"""A lldb synthetic provider for QVector like types"""
def __init__(self, valobj, internal_dict):
super(BasicVectorFormatter, self).__init__(valobj, internal_dict)
self._item_type = valobj.GetType().GetTemplateArgumentType(0)
self._item_size = self._item_type.GetByteSize()
def _update(self):
d = self.valobj.GetChildMemberWithName('p')
# Qt4 has 'p', Qt5 doesn't
isQt4 = d.IsValid()
if isQt4:
pArray = d.GetChildMemberWithName('array').AddressOf().GetValueAsUnsigned(0)
else:
d = self.valobj.GetChildMemberWithName('d')
offset = d.GetChildMemberWithName('offset')
pArray = d.GetValueAsUnsigned(0) + offset.GetValueAsUnsigned(0)
# sanity check
if not toSBPointer(self.valobj, pArray, self._item_type).IsValid():
return
# self._num_children = d.GetChildMemberWithName('size').GetValueAsUnsigned(0)
self._num_children = d.GetChildMemberWithName('size').GetValueAsSigned(-1)
if self._num_children < 0:
return
if self._num_children > self._capping_size():
self._num_children = self._capping_size()
for idx in range(0, self._num_children):
var = self.valobj.CreateValueFromAddress('[{}]'.format(idx),
pArray + idx * self._item_size,
self._item_type)
self._addChild(var)
class QVectorFormatter(BasicVectorFormatter):
"""lldb synthetic provider for QVector"""
def __init__(self, valobj, internal_dict):
super(QVectorFormatter, self).__init__(valobj, internal_dict)
class QStackFormatter(BasicVectorFormatter):
"""lldb synthetic provider for QStack"""
def __init__(self, valobj, internal_dict):
super(QStackFormatter, self).__init__(valobj.GetChildAtIndex(0), internal_dict)
self.actualobj = valobj
def update(self):
self.valobj = self.actualobj.GetChildAtIndex(0)
super(QStackFormatter, self).update()
class QLinkedListFormatter(HiddenMemberProvider):
"""A lldb synthetic provider for QLinkedList"""
def __init__(self, valobj, internal_dict):
super(QLinkedListFormatter, self).__init__(valobj, internal_dict)
self._item_type = valobj.GetType().GetTemplateArgumentType(0)
def _update(self):
d = self.valobj.GetChildMemberWithName('d')
self._num_children = d.GetChildMemberWithName('size').GetValueAsSigned(-1)
if self._num_children < 0:
return
node = self.valobj.GetChildMemberWithName('e').GetChildMemberWithName('n')
for idx in range(0, self._num_children):
if not node.IsValid():
self._members = []
self._num_children = 0
return
var = node.GetChildMemberWithName('t')
node = node.GetChildMemberWithName('n')
var = self.valobj.CreateValueFromData('[{}]'.format(idx),
var.GetData(),
self._item_type)
self._addChild(var)
class KeyValueFormatter(object):
"""A lldb synthetic provider for (key,value) pair like types"""
def __init__(self, valobj, internal_dict):
self.valobj = valobj
self._key_item = None
self._val_item = None
def num_children(self):
return 2
def has_children(self):
return True
def get_child_index(self, name):
if name == 'key':
return 0
elif name == 'value':
return 1
return None
def get_child_at_index(self, idx):
if idx < 0 or idx >= 2:
return None
if idx == 0:
return self._key_item
elif idx == 1:
return self._val_item
return None
def update(self):
if not self.valobj.IsValid():
return
self._key_item = self.valobj.GetChildMemberWithName('key')
self._val_item = self.valobj.GetChildMemberWithName('value')
def KeyValueSummaryProvider(valobj, internal_dict):
if not valobj.IsValid():
return None
key = valobj.GetChildMemberWithName('key')
value = valobj.GetChildMemberWithName('value')
key_summary = key.GetSummary() or key.GetValue() # show value if summary is empty or None
val_summary = value.GetSummary() or value.GetValue() # show value if summary is empty or None
return '({}, {})'.format(key_summary, val_summary)
class BasicMapFormatter(HiddenMemberProvider):
"""A lldb synthetic provider for QMap like types"""
def __init__(self, valobj, internal_dict):
super(BasicMapFormatter, self).__init__(valobj, internal_dict)
self_type = valobj.GetType()
key_type = self_type.GetTemplateArgumentType(0)
val_type = self_type.GetTemplateArgumentType(1)
# the ' ' between two template arguments is significant,
# otherwise FindFirstType returns None
node_typename = 'QMapNode<{}, {}>'.format(key_type.GetName(), val_type.GetName())
# node_typename = canonicalized_type_name(node_typename)
self._node_type = valobj.GetTarget().FindFirstType(node_typename)
e = self.valobj.GetChildMemberWithName('e')
self.isQt4 = e.IsValid()
if self.isQt4:
self._payload_size = self._qt4_calc_payload(key_type, val_type)
def _qt4_calc_payload(self, key_type, val_type):
"""calculate payload size for Qt4"""
str = lldb.SBStream()
self.valobj.GetExpressionPath(str, True)
expr = '{}.payload()'.format(str.GetData())
ret = lldb.frame.EvaluateExpression(expr).GetValueAsUnsigned(0)
if ret != 0:
return ret
else:
# if the inferior function call didn't work, let's try to calculate ourselves
target = self.valobj.GetTarget()
pvoid_type = target.GetBasicType(lldb.eBasicTypeVoid).GetPointerType()
pvoid_size = pvoid_type.GetByteSize()
# we can't use QMapPayloadNode as it's inlined
# as a workaround take the sum of sizeof(members)
ret = key_type.GetByteSize()
ret += val_type.GetByteSize()
ret += pvoid_size
# but because of data alignment the value can be higher
# so guess it's aliged by sizeof(void*)
# TODO: find a real solution for this problem
ret += ret % pvoid_size
# for some reason booleans are different
if val_type == target.GetBasicType(lldb.eBasicTypeBool):
ret += 2
ret -= pvoid_size
return ret
class _iteratorQt4(Iterator):
"""Map iterator for Qt4"""
def __init__(self, headerobj, node_type, payload_size):
self.current = headerobj.GetChildMemberWithName('forward').GetChildAtIndex(0)
self.header_addr = headerobj.GetValueAsUnsigned(0)
self.node_type = node_type
self.payload_size = payload_size
# sanity check
self.is_garbage = False
if not validAddr(headerobj, self.header_addr):
self.is_garbage = True
if not validPointer(self.current):
self.is_garbage = True
def __iter__(self):
return self
def concrete(self, pdata_node):
pnode_addr = pdata_node.GetValueAsUnsigned(0)
pnode_addr -= self.payload_size
return toSBPointer(self.current, pnode_addr, self.node_type)
def __next__(self):
if self.is_garbage:
raise StopIteration
if self.current.GetValueAsUnsigned(0) == self.header_addr:
raise StopIteration
pnode = self.concrete(self.current)
self.current = self.current.GetChildMemberWithName('forward').GetChildAtIndex(0)
return pnode
class _iteratorQt5(Iterator):
"""Map iterator for Qt5"""
def __init__(self, dataobj, pnode_type):
self.pnode_type = pnode_type
self.root = dataobj.GetChildMemberWithName('header')
self.current = lldb.SBValue()
# We store the path here to avoid keeping re-fetching
# values from the inferior (also, skip the pointer
# arithmetic involved in using the parent pointer
self.path = []
def __iter__(self):
return self
def moveToNextNode(self):
def isNullPointer(val):
return not val.IsValid() or val.GetValueAsUnsigned(0) == 0
if isNullPointer(self.current):
# find the leftmost node
left = self.root.GetChildMemberWithName('left')
if isNullPointer(left):
return False
self.current = self.root
while not isNullPointer(left):
self.path.append(self.current)
self.current = left
left = self.current.GetChildMemberWithName('left')
else:
right = self.current.GetChildMemberWithName('right')
if not isNullPointer(right):
self.path.append(self.current)
self.current = right
left = self.current.GetChildMemberWithName('left')
while not isNullPointer(left):
self.path.append(self.current)
self.current = left
left = self.current.GetChildMemberWithName('left')
else:
last = self.current
self.current = self.path.pop()
right = self.current.GetChildMemberWithName('right')
while right.GetValueAsUnsigned(0) == last.GetValueAsUnsigned(0):
last = self.current
self.current = self.path.pop()
right = self.current.GetChildMemberWithName('right')
# if there are no more parents, we are at the root
if len(self.path) == 0:
return False
return True
def __next__(self):
if not self.moveToNextNode():
raise StopIteration
return self.current.Cast(self.pnode_type)
def _update(self):
pnode_type = self._node_type.GetPointerType()
if self.isQt4:
e = self.valobj.GetChildMemberWithName('e')
it = self._iteratorQt4(e, self._node_type, self._payload_size)
else:
d = self.valobj.GetChildMemberWithName('d')
it = self._iteratorQt5(d, pnode_type)
self._num_children = 0
for pnode in it:
# dereference node and change to a user friendly name
name = '[{}]'.format(self._num_children)
self._num_children += 1
var = self.valobj.CreateValueFromData(name, pnode.GetPointeeData(),
self._node_type)
self._addChild(var)
class QMapFormatter(BasicMapFormatter):
"""lldb synthethic provider for QMap"""
def __init__(self, valobj, internal_dict):
super(QMapFormatter, self).__init__(valobj, internal_dict)
class QMultiMapFormatter(BasicMapFormatter):
"""lldb synthethic provider for QMap"""
def __init__(self, valobj, internal_dict):
super(QMultiMapFormatter, self).__init__(valobj.GetChildAtIndex(0), internal_dict)
self.actualobj = valobj
def update(self):
self.valobj = self.actualobj.GetChildAtIndex(0)
super(QMultiMapFormatter, self).update()
class BasicHashFormatter(HiddenMemberProvider):
"""A lldb synthetic provider for QHash like types"""
def __init__(self, valobj, internal_dict):
super(BasicHashFormatter, self).__init__(valobj, internal_dict)
self_type = valobj.GetType()
self._key_type = self_type.GetTemplateArgumentType(0)
self._val_type = self_type.GetTemplateArgumentType(1)
node_typename = 'QHashNode<{}, {}>'.format(self._key_type.GetName(),
self._val_type.GetName())
# node_typename = canonicalized_type_name(node_typename)
self._node_type = valobj.GetTarget().FindFirstType(node_typename)
class _iterator(Iterator):
"""Hash iterator"""
def __init__(self, valobj, pnode_type):
d = valobj.GetChildMemberWithName('d')
self.buckets = d.GetChildMemberWithName('buckets')
self.null_node = valobj.GetChildMemberWithName('e')
self.pnode_type = pnode_type
self.num_buckets = d.GetChildMemberWithName('numBuckets').GetValueAsSigned(-1)
self.is_garbage = False
if self.num_buckets < -1:
self.is_garbage = True
return
self.current = self.firstNode()
def __iter__(self):
return self
def findNode(self, start=0):
"""Iterate through buckets, start at `start`,
return any bucket the is not the null_node, or the null_node itself if nothing found.
adapted from QHashData::firstNode
"""
null_node_addr = self.null_node.GetValueAsUnsigned(0)
for idx in range(start, self.num_buckets):
# self.buckets has type QHashData::Node**, not an array
# calling GetChildAtIndex with use_synthetic=True so the pointer is used as an array
bucket = self.buckets.GetChildAtIndex(idx, lldb.eDynamicCanRunTarget, True)
if bucket.GetValueAsUnsigned(0) != null_node_addr:
# in Qt4, QHashData::Node is incomplete type, but QHashNode is complete,
# so always use QHashNode
return bucket.Cast(self.pnode_type)
return self.null_node
def firstNode(self):
return self.findNode()
def moveToNextNode(self):
"""Get the nextNode after the current, see also QHashData::nextNode()."""
next = self.current.GetChildMemberWithName('next')
if next.GetValueAsUnsigned(0) != self.null_node.GetValueAsUnsigned(0):
self.current = next
else:
h = self.current.GetChildMemberWithName('h').GetValueAsUnsigned(0)
start = (h % self.num_buckets) + 1
self.current = self.findNode(start)
def __next__(self):
if self.is_garbage:
raise StopIteration
if self.current.GetValueAsUnsigned(0) == self.null_node.GetValueAsUnsigned(0):
raise StopIteration
pnode = self.current
self.moveToNextNode()
return pnode
def _update(self):
self._num_children = self.valobj.GetChildMemberWithName('d').GetChildMemberWithName('size').GetValueAsSigned(-1)
if self._num_children < 0:
return
idx = 0
for pnode in self._iterator(self.valobj, self._node_type.GetPointerType()):
if idx >= self._num_children:
self._members = []
self._num_children = 0
break
# dereference node and change to a user friendly name
name = '[{}]'.format(idx)
idx += 1
var = self.valobj.CreateValueFromData(name, pnode.GetPointeeData(),
self._node_type)
self._addChild(var)
if idx != self._num_children:
self._members = []
self._num_children = 0
class QHashFormatter(BasicHashFormatter):
"""lldb synthethic provider for QHash"""
def __init__(self, valobj, internal_dict):
super(QHashFormatter, self).__init__(valobj, internal_dict)
class QMultiHashFormatter(BasicHashFormatter):
"""lldb synthethic provider for QHash"""
def __init__(self, valobj, internal_dict):
super(QMultiHashFormatter, self).__init__(valobj.GetChildAtIndex(0), internal_dict)
self.actualobj = valobj
def update(self):
self.valobj = self.actualobj.GetChildAtIndex(0)
super(QMultiHashFormatter, self).update()
class QSetFormatter(HiddenMemberProvider):
"""lldb synthetic provider for QSet"""
def __init__(self, valobj, internal_dict):
super(QSetFormatter, self).__init__(valobj, internal_dict)
self._hash_formatter = QHashFormatter(valobj.GetChildMemberWithName('q_hash'),
internal_dict)
def num_children(self):
return self._num_children
def _update(self):
self._hash_formatter.valobj = self.valobj.GetChildMemberWithName('q_hash')
self._hash_formatter.update()
self._num_children = 0
for node in self._hash_formatter._members:
keydata = node.GetChildMemberWithName('key').GetData()
name = '[{}]'.format(self._num_children)
var = self.valobj.CreateValueFromData(name, keydata, self._hash_formatter._key_type)
self._addChild(var)
self._num_children += 1
class QDateFormatter(HiddenMemberProvider):
"""lldb synthetic provider for QDate"""
def __init__(self, valobj, internal_dict):
super(QDateFormatter, self).__init__(valobj, internal_dict)
self._add_original = False
self._qstring_type = valobj.GetTarget().FindFirstType('QString')
def has_children(self):
return True
@staticmethod
def parse(julianDay):
"""Copied from Qt srources"""
if julianDay == 0:
return None
if julianDay >= 2299161:
# Gregorian calendar starting from October 15, 1582
# This algorithm is from Henry F. Fliegel and Thomas C. Van Flandern
ell = julianDay + 68569
n = (4 * ell) / 146097
ell = ell - (146097 * n + 3) / 4
i = (4000 * (ell + 1)) / 1461001
ell = ell - (1461 * i) / 4 + 31
j = (80 * ell) / 2447
d = ell - (2447 * j) / 80
ell = j / 11
m = j + 2 - (12 * ell)
y = 100 * (n - 49) + i + ell
else:
# Julian calendar until October 4, 1582
# Algorithm from Frequently Asked Questions about Calendars by Claus Toendering
julianDay += 32082
dd = (4 * julianDay + 3) / 1461
ee = julianDay - (1461 * dd) / 4
mm = ((5 * ee) + 2) / 153
d = ee - (153 * mm + 2) / 5 + 1
m = mm + 3 - 12 * (mm / 10)
y = dd - 4800 + (mm / 10)
if y <= 0:
return None
return dt.date(y, m, d)
def _update(self):
# FIXME: Calling functions returns incorrect SBValue for complex type in lldb
# # toString
# res = invoke(self.valobj, 'toString', '0')
# self._addChild(rename('toString', res))
# jd
julianDay = self.valobj.GetChildMemberWithName('jd')
self._addChild(julianDay)
pydate = self.parse(julianDay.GetValueAsUnsigned(0))
if pydate is None:
return
# (ISO)
iso_str = pydate.isoformat().decode().__repr__()[2:-1]
self._addChild(('(ISO)', iso_str))
# (Locale)
locale_encoding = [locale.getlocale()[1]]
if locale_encoding[0] is None:
locale_encoding = []
locale_str = pydate.strftime('%x').decode(*locale_encoding).__repr__()[2:-1]
self._addChild(('(Locale)', locale_str))
def QDateSummaryProvider(valobj, internal_dict):
if valobj.IsValid():
content = valobj.GetChildMemberWithName('(Locale)')
if content.IsValid():
summary = content.GetSummary()
if summary is not None:
return summary
# No synthetic provider installed, get the content by ourselves
pydate = QDateFormatter.parse(valobj.GetChildMemberWithName('jd').GetValueAsUnsigned(0))
if pydate is not None:
return pydate.isoformat().decode().__repr__()[2:-1]
return '<Invalid>'
class QTimeFormatter(HiddenMemberProvider):
"""lldb synthetic provider for QTime"""
def __init__(self, valobj, internal_dict):
super(QTimeFormatter, self).__init__(valobj, internal_dict)
self._add_original = False
def has_children(self):
return True
@staticmethod
def parse(ds):
if ds < 0:
return None
MSECS_PER_HOUR = 3600000
SECS_PER_MIN = 60
MSECS_PER_MIN = 60000
hour = ds / MSECS_PER_HOUR
minute = (ds % MSECS_PER_HOUR) / MSECS_PER_MIN
second = (ds / 1000) % SECS_PER_MIN
msec = ds % 1000
return dt.time(hour, minute, second, msec)
def _update(self):
# FIXME: Calling functions returns incorrect SBValue for complex type in lldb
# # toString
# res = invoke(self.valobj, 'toString', '0')
# self._addChild(rename('toString', res))