"""
LLDB AppKit formatters
part of The LLVM Compiler Infrastructure
This file is distributed under the University of Illinois Open Source
License. See LICENSE.TXT for details.
"""
import lldb
import ctypes
import lldb.runtime.objc.objc_runtime
import lldb.formatters.metrics
import lldb.formatters.Logger
def byte_index(abs_pos):
logger = lldb.formatters.Logger.Logger()
return abs_pos/8
def bit_index(abs_pos):
logger = lldb.formatters.Logger.Logger()
return abs_pos & 7
def get_bit(byte,index):
logger = lldb.formatters.Logger.Logger()
if index < 0 or index > 7:
return None
return (byte >> (7-index)) & 1
def grab_array_item_data(pointer,index):
logger = lldb.formatters.Logger.Logger()
return pointer.GetPointeeData(index,1)
statistics = lldb.formatters.metrics.Metrics()
statistics.add_metric('invalid_isa')
statistics.add_metric('invalid_pointer')
statistics.add_metric('unknown_class')
statistics.add_metric('code_notrun')
class CFBitVectorKnown_SummaryProvider:
def adjust_for_architecture(self):
logger = lldb.formatters.Logger.Logger()
self.uiint_size = self.sys_params.types_cache.NSUInteger.GetByteSize()
pass
def __init__(self, valobj, params):
logger = lldb.formatters.Logger.Logger()
self.valobj = valobj;
self.sys_params = params
if not(self.sys_params.types_cache.NSUInteger):
if self.sys_params.is_64_bit:
self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
else:
self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedInt)
if not(self.sys_params.types_cache.charptr):
self.sys_params.types_cache.charptr = self.valobj.GetType().GetBasicType(lldb.eBasicTypeChar).GetPointerType()
self.update();
def update(self):
logger = lldb.formatters.Logger.Logger()
self.adjust_for_architecture();
def contents(self):
logger = lldb.formatters.Logger.Logger()
count_vo = self.valobj.CreateChildAtOffset("count",self.sys_params.cfruntime_size,
self.sys_params.types_cache.NSUInteger)
count = count_vo.GetValueAsUnsigned(0)
if count == 0:
return '(empty)'
array_vo = self.valobj.CreateChildAtOffset("data",
self.sys_params.cfruntime_size+2*self.uiint_size,
self.sys_params.types_cache.charptr)
data_list = []
cur_byte_pos = None
for i in range(0,count):
if cur_byte_pos == None:
cur_byte_pos = byte_index(i)
cur_byte = grab_array_item_data(array_vo,cur_byte_pos)
cur_byte_val = cur_byte.uint8[0]
else:
byte_pos = byte_index(i)
if byte_pos != cur_byte_pos:
cur_byte_pos = byte_pos
cur_byte = grab_array_item_data(array_vo,cur_byte_pos)
cur_byte_val = cur_byte.uint8[0]
bit = get_bit(cur_byte_val,bit_index(i))
if (i % 4) == 0:
data_list.append(' ')
if bit == 1:
data_list.append('1')
else:
data_list.append('0')
return ''.join(data_list)
class CFBitVectorUnknown_SummaryProvider:
def adjust_for_architecture(self):
pass
def __init__(self, valobj, params):
logger = lldb.formatters.Logger.Logger()
self.valobj = valobj;
self.sys_params = params
self.update();
def update(self):
logger = lldb.formatters.Logger.Logger()
self.adjust_for_architecture();
def contents(self):
logger = lldb.formatters.Logger.Logger()
return '<unable to summarize this CFBitVector>'
def GetSummary_Impl(valobj):
logger = lldb.formatters.Logger.Logger()
global statistics
class_data,wrapper =lldb.runtime.objc.objc_runtime.Utilities.prepare_class_detection(valobj,statistics)
if wrapper:
return wrapper
name_string = class_data.class_name()
actual_name = name_string
logger >> "name string got was " + str(name_string) + " but actual name is " + str(actual_name)
if class_data.is_cftype():
valobj_type = valobj.GetType()
if valobj_type.IsValid() and valobj_type.IsPointerType():
valobj_type = valobj_type.GetPointeeType()
if valobj_type.IsValid():
actual_name = valobj_type.GetName()
if actual_name == '__CFBitVector' or actual_name == '__CFMutableBitVector':
wrapper = CFBitVectorKnown_SummaryProvider(valobj, class_data.sys_params)
statistics.metric_hit('code_notrun',valobj)
else:
wrapper = CFBitVectorUnknown_SummaryProvider(valobj, class_data.sys_params)
print actual_name
else:
wrapper = CFBitVectorUnknown_SummaryProvider(valobj, class_data.sys_params)
print name_string
statistics.metric_hit('unknown_class',valobj.GetName() + " seen as " + name_string)
return wrapper;
def CFBitVector_SummaryProvider (valobj,dict):
logger = lldb.formatters.Logger.Logger()
provider = GetSummary_Impl(valobj);
if provider != None:
if isinstance(provider,lldb.runtime.objc.objc_runtime.SpecialSituation_Description):
return provider.message()
try:
summary = provider.contents();
except:
summary = None
logger >> "summary got from provider: " + str(summary)
if summary == None or summary == '':
summary = '<variable is not CFBitVector>'
return summary
return 'Summary Unavailable'
def __lldb_init_module(debugger,dict):
debugger.HandleCommand("type summary add -F CFBitVector.CFBitVector_SummaryProvider CFBitVectorRef CFMutableBitVectorRef")