forked from OSchip/llvm-project
125 lines
4.1 KiB
Python
125 lines
4.1 KiB
Python
# summary provider for NSURL
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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 CFString
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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 a summary for an NSURL, so they need not
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# obey the interface specification for synthetic children providers
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class NSURLKnown_SummaryProvider:
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def adjust_for_architecture(self):
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self.is_64_bit = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8)
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self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle)
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self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize()
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def __init__(self, valobj):
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self.valobj = valobj;
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self.update();
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def update(self):
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self.adjust_for_architecture();
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self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID)
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if self.is_64_bit:
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self.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
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self.pointer_size = 8
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else:
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self.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedInt)
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self.pointer_size = 4
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self.NSString = self.valobj.GetTarget().FindFirstType('NSString')
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self.NSURL = self.valobj.GetTarget().FindFirstType('NSURL')
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# one pointer is the ISA
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# then there is one more pointer and 8 bytes of plain data
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# (which are also present on a 32-bit system)
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# plus another pointer, and then the real data
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def offset(self):
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if self.is_64_bit:
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return 24
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else:
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return 16
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def url_text(self):
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text = self.valobj.CreateChildAtOffset("text",
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self.offset(),
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self.NSString.GetPointerType())
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base = self.valobj.CreateChildAtOffset("base",
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self.offset()+self.pointer_size,
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self.NSURL.GetPointerType())
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my_string = CFString.CFString_SummaryProvider(text,None)
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if base.GetValueAsUnsigned(0) != 0:
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my_string = my_string + " (base path: " + NSURL_SummaryProvider(base,None) + ")"
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return my_string
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class NSURLUnknown_SummaryProvider:
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def adjust_for_architecture(self):
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self.is_64_bit = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8)
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self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle)
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self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize()
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def __init__(self, valobj):
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self.valobj = valobj;
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self.update()
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def update(self):
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self.adjust_for_architecture();
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self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID)
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def url_text(self):
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stream = lldb.SBStream()
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self.valobj.GetExpressionPath(stream)
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url_text_vo = self.valobj.CreateValueFromExpression("url","(NSString*)[" + stream.GetData() + " description]");
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return CFString.CFString_SummaryProvider(url_text_vo,None)
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def GetSummary_Impl(valobj):
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global statistics
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class_data = objc_runtime.ObjCRuntime(valobj)
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if class_data.is_valid() == False:
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statistics.metric_hit('invalid_pointer',valobj)
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wrapper = None
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return
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class_data = class_data.read_class_data()
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if class_data.is_valid() == False:
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statistics.metric_hit('invalid_isa',valobj)
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wrapper = None
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return
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if class_data.is_kvo():
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class_data = class_data.get_superclass()
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if class_data.is_valid() == False:
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statistics.metric_hit('invalid_isa',valobj)
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wrapper = None
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return
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name_string = class_data.class_name()
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if name_string == 'NSURL':
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wrapper = NSURLKnown_SummaryProvider(valobj)
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statistics.metric_hit('code_notrun',valobj)
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else:
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wrapper = NSURLUnknown_SummaryProvider(valobj)
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statistics.metric_hit('unknown_class',str(valobj) + " seen as " + name_string)
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return wrapper;
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def NSURL_SummaryProvider (valobj,dict):
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provider = GetSummary_Impl(valobj);
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if provider != None:
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try:
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summary = provider.url_text();
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except:
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summary = None
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if summary == None or summary == '':
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summary = 'no valid NSURL here'
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return summary
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return ''
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def __lldb_init_module(debugger,dict):
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debugger.HandleCommand("type summary add -F NSURL.NSURL_SummaryProvider NSURL CFURLRef")
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