| """ |
| 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. |
| """ |
| # summary provider for CFBag |
| import lldb |
| import ctypes |
| import lldb.runtime.objc.objc_runtime |
| import lldb.formatters.metrics |
| import lldb.formatters.Logger |
| |
| 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') |
| |
| # despite the similary to synthetic children providers, these classes are not |
| # trying to provide anything but the length for an CFBag, so they need not |
| # obey the interface specification for synthetic children providers |
| class CFBagRef_SummaryProvider: |
| def adjust_for_architecture(self): |
| 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) |
| self.update(); |
| |
| def update(self): |
| logger = lldb.formatters.Logger.Logger() |
| self.adjust_for_architecture(); |
| |
| # 12 bytes on i386 |
| # 20 bytes on x64 |
| # most probably 2 pointers and 4 bytes of data |
| def offset(self): |
| logger = lldb.formatters.Logger.Logger() |
| if self.sys_params.is_64_bit: |
| return 20 |
| else: |
| return 12 |
| |
| def length(self): |
| logger = lldb.formatters.Logger.Logger() |
| size = self.valobj.CreateChildAtOffset("count", |
| self.offset(), |
| self.sys_params.types_cache.NSUInteger) |
| return size.GetValueAsUnsigned(0) |
| |
| |
| class CFBagUnknown_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 length(self): |
| logger = lldb.formatters.Logger.Logger() |
| stream = lldb.SBStream() |
| self.valobj.GetExpressionPath(stream) |
| num_children_vo = self.valobj.CreateValueFromExpression("count","(int)CFBagGetCount(" + stream.GetData() + " )") |
| if num_children_vo.IsValid(): |
| return num_children_vo.GetValueAsUnsigned(0) |
| return "<variable is not CFBag>" |
| |
| |
| 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(): |
| # CFBag does not expose an actual NSWrapper type, so we have to check that this is |
| # an NSCFType and then check we are a pointer-to __CFBag |
| 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 == '__CFBag' or \ |
| actual_name == 'const struct __CFBag': |
| wrapper = CFBagRef_SummaryProvider(valobj, class_data.sys_params) |
| statistics.metric_hit('code_notrun',valobj) |
| return wrapper |
| wrapper = CFBagUnknown_SummaryProvider(valobj, class_data.sys_params) |
| statistics.metric_hit('unknown_class',valobj.GetName() + " seen as " + actual_name) |
| return wrapper; |
| |
| def CFBag_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.length(); |
| except: |
| summary = None |
| logger >> "summary got from provider: " + str(summary) |
| # for some reason, one needs to clear some bits for the count |
| # to be correct when using CF(Mutable)BagRef on x64 |
| # the bit mask was derived through experimentation |
| # (if counts start looking weird, then most probably |
| # the mask needs to be changed) |
| if summary == None: |
| summary = '<variable is not CFBag>' |
| elif isinstance(summary,basestring): |
| pass |
| else: |
| if provider.sys_params.is_64_bit: |
| summary = summary & ~0x1fff000000000000 |
| if summary == 1: |
| summary = '@"1 value"' |
| else: |
| summary = '@"' + str(summary) + ' values"' |
| return summary |
| return 'Summary Unavailable' |
| |
| def __lldb_init_module(debugger,dict): |
| debugger.HandleCommand("type summary add -F CFBag.CFBag_SummaryProvider CFBagRef CFMutableBagRef") |