forked from OSchip/llvm-project
234 lines
7.5 KiB
Python
234 lines
7.5 KiB
Python
"""
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LLDB AppKit formatters
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part of The LLVM Compiler Infrastructure
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This file is distributed under the University of Illinois Open Source
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License. See LICENSE.TXT for details.
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"""
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# summary provider for NSDictionary
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import lldb
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import ctypes
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import objc_runtime
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import metrics
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import Logger
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statistics = metrics.Metrics()
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statistics.add_metric('invalid_isa')
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statistics.add_metric('invalid_pointer')
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statistics.add_metric('unknown_class')
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statistics.add_metric('code_notrun')
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# despite the similary to synthetic children providers, these classes are not
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# trying to provide anything but the count for an NSDictionary, so they need not
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# obey the interface specification for synthetic children providers
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class NSCFDictionary_SummaryProvider:
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def adjust_for_architecture(self):
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pass
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def __init__(self, valobj, params):
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logger = Logger.Logger()
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self.valobj = valobj;
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self.sys_params = params
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if not(self.sys_params.types_cache.NSUInteger):
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if self.sys_params.is_64_bit:
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self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
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else:
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self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedInt)
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self.update();
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def update(self):
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logger = Logger.Logger()
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self.adjust_for_architecture();
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# empirically determined on both 32 and 64bit desktop Mac OS X
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# probably boils down to 2 pointers and 4 bytes of data, but
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# the description of __CFDictionary is not readily available so most
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# of this is guesswork, plain and simple
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def offset(self):
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logger = Logger.Logger()
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if self.sys_params.is_64_bit:
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return 20
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else:
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return 12
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def num_children(self):
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logger = Logger.Logger()
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num_children_vo = self.valobj.CreateChildAtOffset("count",
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self.offset(),
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self.sys_params.types_cache.NSUInteger)
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return num_children_vo.GetValueAsUnsigned(0)
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class NSDictionaryI_SummaryProvider:
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def adjust_for_architecture(self):
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pass
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def __init__(self, valobj, params):
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logger = Logger.Logger()
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self.valobj = valobj;
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self.sys_params = params
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if not(self.sys_params.types_cache.NSUInteger):
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if self.sys_params.is_64_bit:
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self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
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else:
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self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedInt)
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self.update();
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def update(self):
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logger = Logger.Logger()
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self.adjust_for_architecture();
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# we just need to skip the ISA and the count immediately follows
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def offset(self):
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logger = Logger.Logger()
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return self.sys_params.pointer_size
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def num_children(self):
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logger = Logger.Logger()
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num_children_vo = self.valobj.CreateChildAtOffset("count",
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self.offset(),
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self.sys_params.types_cache.NSUInteger)
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value = num_children_vo.GetValueAsUnsigned(0)
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if value != None:
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# the MS6bits on immutable dictionaries seem to be taken by the LSB of capacity
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# not sure if it is a bug or some weird sort of feature, but masking that out
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# gets the count right
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if self.sys_params.is_64_bit:
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value = value & ~0xFC00000000000000
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else:
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value = value & ~0xFC000000
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return value
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class NSDictionaryM_SummaryProvider:
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def adjust_for_architecture(self):
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pass
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def __init__(self, valobj, params):
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logger = Logger.Logger()
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self.valobj = valobj;
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self.sys_params = params
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if not(self.sys_params.types_cache.NSUInteger):
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if self.sys_params.is_64_bit:
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self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
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else:
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self.sys_params.types_cache.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedInt)
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self.update();
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def update(self):
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logger = Logger.Logger()
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self.adjust_for_architecture();
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# we just need to skip the ISA and the count immediately follows
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def offset(self):
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return self.sys_params.pointer_size
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def num_children(self):
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logger = Logger.Logger()
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num_children_vo = self.valobj.CreateChildAtOffset("count",
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self.offset(),
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self.sys_params.types_cache.NSUInteger)
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value = num_children_vo.GetValueAsUnsigned(0)
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if value != None:
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# the MS6bits on immutable dictionaries seem to be taken by the LSB of capacity
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# not sure if it is a bug or some weird sort of feature, but masking that out
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# gets the count right
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if self.sys_params.is_64_bit:
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value = value & ~0xFC00000000000000
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else:
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value = value & ~0xFC000000
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return value
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class NSDictionaryUnknown_SummaryProvider:
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def adjust_for_architecture(self):
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pass
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def __init__(self, valobj, params):
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logger = Logger.Logger()
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self.valobj = valobj;
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self.sys_params = params
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self.update();
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def update(self):
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logger = Logger.Logger()
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self.adjust_for_architecture();
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def num_children(self):
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logger = Logger.Logger()
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stream = lldb.SBStream()
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self.valobj.GetExpressionPath(stream)
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num_children_vo = self.valobj.CreateValueFromExpression("count","(int)[" + stream.GetData() + " count]");
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if num_children_vo.IsValid():
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return num_children_vo.GetValueAsUnsigned(0)
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return '<variable is not NSDictionary>'
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def GetSummary_Impl(valobj):
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logger = Logger.Logger()
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global statistics
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class_data,wrapper = objc_runtime.Utilities.prepare_class_detection(valobj,statistics)
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if wrapper:
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return wrapper
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name_string = class_data.class_name()
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logger >> "class name is: " + str(name_string)
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if name_string == '__NSCFDictionary':
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wrapper = NSCFDictionary_SummaryProvider(valobj, class_data.sys_params)
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statistics.metric_hit('code_notrun',valobj)
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elif name_string == '__NSDictionaryI':
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wrapper = NSDictionaryI_SummaryProvider(valobj, class_data.sys_params)
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statistics.metric_hit('code_notrun',valobj)
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elif name_string == '__NSDictionaryM':
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wrapper = NSDictionaryM_SummaryProvider(valobj, class_data.sys_params)
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statistics.metric_hit('code_notrun',valobj)
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else:
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wrapper = NSDictionaryUnknown_SummaryProvider(valobj, class_data.sys_params)
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statistics.metric_hit('unknown_class',valobj.GetName() + " seen as " + name_string)
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return wrapper;
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def CFDictionary_SummaryProvider (valobj,dict):
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logger = Logger.Logger()
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provider = GetSummary_Impl(valobj);
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if provider != None:
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if isinstance(provider,objc_runtime.SpecialSituation_Description):
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return provider.message()
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try:
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summary = provider.num_children();
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except:
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summary = None
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logger >> "got summary " + str(summary)
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if summary == None:
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return '<variable is not NSDictionary>'
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if isinstance(summary,basestring):
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return summary
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return str(summary) + (" key/value pairs" if summary != 1 else " key/value pair")
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return 'Summary Unavailable'
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def CFDictionary_SummaryProvider2 (valobj,dict):
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logger = Logger.Logger()
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provider = GetSummary_Impl(valobj);
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if provider != None:
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if isinstance(provider,objc_runtime.SpecialSituation_Description):
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return provider.message()
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try:
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summary = provider.num_children();
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except:
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summary = None
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logger >> "got summary " + str(summary)
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if summary == None:
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summary = '<variable is not CFDictionary>'
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if isinstance(summary,basestring):
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return summary
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else:
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# needed on OSX Mountain Lion
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if provider.sys_params.is_64_bit:
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summary = summary & ~0x0f1f000000000000
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summary = '@"' + str(summary) + (' entries"' if summary != 1 else ' entry"')
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return summary
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return 'Summary Unavailable'
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def __lldb_init_module(debugger,dict):
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debugger.HandleCommand("type summary add -F CFDictionary.CFDictionary_SummaryProvider NSDictionary")
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debugger.HandleCommand("type summary add -F CFDictionary.CFDictionary_SummaryProvider2 CFDictionaryRef CFMutableDictionaryRef")
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