128 lines
4.1 KiB
Python
128 lines
4.1 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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# example summary provider for NSBundle
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# the real summary is now C++ code built into LLDB
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import lldb
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import ctypes
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import lldb.runtime.objc.objc_runtime
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import lldb.formatters.metrics
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import NSURL
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import lldb.formatters.Logger
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statistics = lldb.formatters.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 NSBundleKnown_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 = lldb.formatters.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.NSString):
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self.sys_params.types_cache.NSString = self.valobj.GetTarget().FindFirstType('NSString').GetPointerType()
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self.update();
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def update(self):
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logger = lldb.formatters.Logger.Logger()
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self.adjust_for_architecture();
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# we need to skip the ISA, plus four other values
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# that are luckily each a pointer in size
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# which makes our computation trivial :-)
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def offset(self):
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logger = lldb.formatters.Logger.Logger()
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return 5 * self.sys_params.pointer_size
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def url_text(self):
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logger = lldb.formatters.Logger.Logger()
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global statistics
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text = self.valobj.CreateChildAtOffset("text",
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self.offset(),
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self.sys_params.types_cache.NSString)
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my_string = text.GetSummary()
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if (my_string == None) or (my_string == ''):
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statistics.metric_hit('unknown_class',str(self.valobj.GetName()) + " triggered unknown pointer location")
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return NSBundleUnknown_SummaryProvider(self.valobj, self.sys_params).url_text()
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else:
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statistics.metric_hit('code_notrun',self.valobj)
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return my_string
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class NSBundleUnknown_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 = lldb.formatters.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 = lldb.formatters.Logger.Logger()
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self.adjust_for_architecture();
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def url_text(self):
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logger = lldb.formatters.Logger.Logger()
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stream = lldb.SBStream()
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self.valobj.GetExpressionPath(stream)
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expr = "(NSString*)[" + stream.GetData() + " bundlePath]"
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url_text_vo = self.valobj.CreateValueFromExpression("path",expr);
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if url_text_vo.IsValid():
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return url_text_vo.GetSummary()
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return '<variable is not NSBundle>'
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def GetSummary_Impl(valobj):
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logger = lldb.formatters.Logger.Logger()
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global statistics
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class_data,wrapper =lldb.runtime.objc.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 == 'NSBundle':
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wrapper = NSBundleKnown_SummaryProvider(valobj, class_data.sys_params)
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# [NSBundle mainBundle] does return an object that is
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# not correctly filled out for our purposes, so we still
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# end up having to run code in that case
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#statistics.metric_hit('code_notrun',valobj)
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else:
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wrapper = NSBundleUnknown_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 NSBundle_SummaryProvider (valobj,dict):
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logger = lldb.formatters.Logger.Logger()
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provider = GetSummary_Impl(valobj);
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if provider != None:
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if isinstance(provider,lldb.runtime.objc.objc_runtime.SpecialSituation_Description):
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return provider.message()
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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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logger >> "got summary " + str(summary)
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if summary == None or summary == '':
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summary = '<variable is not NSBundle>'
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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 NSBundle.NSBundle_SummaryProvider NSBundle")
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