| """ |
| 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 NSURL |
| import lldb |
| import ctypes |
| import lldb.runtime.objc.objc_runtime |
| import lldb.formatters.metrics |
| import CFString |
| 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 a summary for an NSURL, so they need not |
| # obey the interface specification for synthetic children providers |
| class NSURLKnown_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.NSString): |
| self.sys_params.types_cache.NSString = self.valobj.GetTarget().FindFirstType('NSString').GetPointerType() |
| if not(self.sys_params.types_cache.NSURL): |
| self.sys_params.types_cache.NSURL = self.valobj.GetTarget().FindFirstType('NSURL').GetPointerType() |
| self.update(); |
| |
| def update(self): |
| logger = lldb.formatters.Logger.Logger() |
| self.adjust_for_architecture(); |
| |
| # one pointer is the ISA |
| # then there is one more pointer and 8 bytes of plain data |
| # (which are also present on a 32-bit system) |
| # then there is a pointer to an NSString which is the url text |
| # optionally, the next pointer is another NSURL which is the "base" |
| # of this one when doing NSURLs composition (incidentally, NSURLs can |
| # recurse the base+text mechanism to any desired depth) |
| def offset_text(self): |
| logger = lldb.formatters.Logger.Logger() |
| return 24 if self.sys_params.is_64_bit else 16 |
| def offset_base(self): |
| logger = lldb.formatters.Logger.Logger() |
| return self.offset_text()+self.sys_params.pointer_size |
| |
| def url_text(self): |
| logger = lldb.formatters.Logger.Logger() |
| text = self.valobj.CreateChildAtOffset("text", |
| self.offset_text(), |
| self.sys_params.types_cache.NSString) |
| base = self.valobj.CreateChildAtOffset("base", |
| self.offset_base(), |
| self.sys_params.types_cache.NSURL) |
| my_string = CFString.CFString_SummaryProvider(text,None) |
| if len(my_string) > 0 and base.GetValueAsUnsigned(0) != 0: |
| # remove final " from myself |
| my_string = my_string[0:len(my_string)-1] |
| my_string = my_string + ' -- ' |
| my_base_string = NSURL_SummaryProvider(base,None) |
| if len(my_base_string) > 2: |
| # remove @" marker from base URL string |
| my_base_string = my_base_string[2:] |
| my_string = my_string + my_base_string |
| return my_string |
| |
| |
| class NSURLUnknown_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 url_text(self): |
| logger = lldb.formatters.Logger.Logger() |
| stream = lldb.SBStream() |
| self.valobj.GetExpressionPath(stream) |
| url_text_vo = self.valobj.CreateValueFromExpression("url","(NSString*)[" + stream.GetData() + " description]") |
| if url_text_vo.IsValid(): |
| return CFString.CFString_SummaryProvider(url_text_vo,None) |
| return '<variable is not NSURL>' |
| |
| |
| 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() |
| logger >> "class name is: " + str(name_string) |
| |
| if name_string == 'NSURL': |
| wrapper = NSURLKnown_SummaryProvider(valobj, class_data.sys_params) |
| statistics.metric_hit('code_notrun',valobj) |
| else: |
| wrapper = NSURLUnknown_SummaryProvider(valobj, class_data.sys_params) |
| statistics.metric_hit('unknown_class',valobj.GetName() + " seen as " + name_string) |
| return wrapper; |
| |
| def NSURL_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.url_text(); |
| except: |
| summary = None |
| logger >> "got summary " + str(summary) |
| if summary == None or summary == '': |
| summary = '<variable is not NSURL>' |
| return summary |
| return 'Summary Unavailable' |
| |
| def __lldb_init_module(debugger,dict): |
| debugger.HandleCommand("type summary add -F NSURL.NSURL_SummaryProvider NSURL CFURLRef") |