forked from OSchip/llvm-project
131 lines
4.5 KiB
Python
131 lines
4.5 KiB
Python
# summary provider for NS(Mutable)IndexSet
|
|
import lldb
|
|
import ctypes
|
|
import objc_runtime
|
|
import metrics
|
|
|
|
statistics = metrics.Metrics()
|
|
statistics.add_metric('invalid_isa')
|
|
statistics.add_metric('invalid_pointer')
|
|
statistics.add_metric('unknown_class')
|
|
statistics.add_metric('code_notrun')
|
|
|
|
# despite the similary to synthetic children providers, these classes are not
|
|
# trying to provide anything but the count of values for an NSIndexSet, so they need not
|
|
# obey the interface specification for synthetic children providers
|
|
class NSIndexSetClass_SummaryProvider:
|
|
def adjust_for_architecture(self):
|
|
self.is_64_bit = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8)
|
|
self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle)
|
|
self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize()
|
|
|
|
def __init__(self, valobj):
|
|
self.valobj = valobj;
|
|
self.update();
|
|
|
|
def update(self):
|
|
self.adjust_for_architecture();
|
|
self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID)
|
|
self.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
|
|
|
|
# NS(Mutable)IndexSet works in one of two modes: when having a compact block of data (e.g. a Range)
|
|
# the count is stored in the set itself, 3 pointers into it
|
|
# otherwise, it will store a pointer to an additional data structure (2 pointers into itself) and this
|
|
# additional structure will contain the count two pointers deep
|
|
# to distinguish the two modes, one reads two pointers deep into the object data: if only the MSB
|
|
# is set, then we are in mode 1, using that area to store flags, otherwise, the read pointer is the
|
|
# location to go look for count in mode 2
|
|
def count(self):
|
|
mode_chooser_vo = self.valobj.CreateChildAtOffset("mode_chooser",
|
|
2*self.pointer_size,
|
|
self.NSUInteger)
|
|
mode_chooser = mode_chooser_vo.GetValueAsUnsigned(0)
|
|
if self.is_64_bit:
|
|
mode_chooser = mode_chooser & 0xFFFFFFFFFFFFFF00
|
|
else:
|
|
mode_chooser = mode_chooser & 0xFFFFFF00
|
|
if mode_chooser == 0:
|
|
mode = 1
|
|
else:
|
|
mode = 2
|
|
if mode == 1:
|
|
count_vo = self.valobj.CreateChildAtOffset("count",
|
|
3*self.pointer_size,
|
|
self.NSUInteger)
|
|
else:
|
|
count_ptr = mode_chooser_vo.GetValueAsUnsigned(0)
|
|
count_vo = self.valobj.CreateValueFromAddress("count",
|
|
count_ptr+2*self.pointer_size,
|
|
self.NSUInteger)
|
|
return count_vo.GetValueAsUnsigned(0)
|
|
|
|
|
|
class NSIndexSetUnknown_SummaryProvider:
|
|
def adjust_for_architecture(self):
|
|
self.is_64_bit = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8)
|
|
self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle)
|
|
self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize()
|
|
|
|
def __init__(self, valobj):
|
|
self.valobj = valobj;
|
|
self.update()
|
|
|
|
def update(self):
|
|
self.adjust_for_architecture();
|
|
self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID)
|
|
|
|
def count(self):
|
|
stream = lldb.SBStream()
|
|
self.valobj.GetExpressionPath(stream)
|
|
expr = "(int)[" + stream.GetData() + " count]"
|
|
num_children_vo = self.valobj.CreateValueFromExpression("count",expr);
|
|
return num_children_vo.GetValueAsUnsigned(0)
|
|
|
|
|
|
def GetSummary_Impl(valobj):
|
|
global statistics
|
|
class_data = objc_runtime.ObjCRuntime(valobj)
|
|
if class_data.is_valid() == False:
|
|
statistics.metric_hit('invalid_pointer',valobj)
|
|
wrapper = None
|
|
return
|
|
class_data = class_data.read_class_data()
|
|
if class_data.is_valid() == False:
|
|
statistics.metric_hit('invalid_isa',valobj)
|
|
wrapper = None
|
|
return
|
|
if class_data.is_kvo():
|
|
class_data = class_data.get_superclass()
|
|
if class_data.is_valid() == False:
|
|
statistics.metric_hit('invalid_isa',valobj)
|
|
wrapper = None
|
|
return
|
|
|
|
name_string = class_data.class_name()
|
|
if name_string == 'NSIndexSet' or name_string == 'NSMutableIndexSet':
|
|
wrapper = NSIndexSetClass_SummaryProvider(valobj)
|
|
statistics.metric_hit('code_notrun',valobj)
|
|
else:
|
|
wrapper = NSIndexSetUnknown_SummaryProvider(valobj)
|
|
statistics.metric_hit('unknown_class',str(valobj) + " seen as " + name_string)
|
|
return wrapper;
|
|
|
|
|
|
def NSIndexSet_SummaryProvider (valobj,dict):
|
|
provider = GetSummary_Impl(valobj);
|
|
if provider != None:
|
|
try:
|
|
summary = provider.count();
|
|
except:
|
|
summary = None
|
|
if summary == None:
|
|
summary = 'no valid set here'
|
|
else:
|
|
summary = str(summary) + ' objects'
|
|
return summary
|
|
return ''
|
|
|
|
|
|
def __lldb_init_module(debugger,dict):
|
|
debugger.HandleCommand("type summary add -F NSIndexSet.NSIndexSet_SummaryProvider NSIndexSet NSMutableIndexSet")
|