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"""
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 class NSException
import lldb.runtime.objc.objc_runtime
import lldb.formatters.metrics
import CFString
import lldb
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')
class NSKnownException_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.id):
self.sys_params.types_cache.id = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID)
self.update();
def update(self):
logger = lldb.formatters.Logger.Logger()
self.adjust_for_architecture();
def offset_name(self):
logger = lldb.formatters.Logger.Logger()
return self.sys_params.pointer_size
def offset_reason(self):
logger = lldb.formatters.Logger.Logger()
return 2*self.sys_params.pointer_size
def description(self):
logger = lldb.formatters.Logger.Logger()
name_ptr = self.valobj.CreateChildAtOffset("name",
self.offset_name(),
self.sys_params.types_cache.id)
reason_ptr = self.valobj.CreateChildAtOffset("reason",
self.offset_reason(),
self.sys_params.types_cache.id)
return 'name:' + CFString.CFString_SummaryProvider(name_ptr,None) + ' reason:' + CFString.CFString_SummaryProvider(reason_ptr,None)
class NSUnknownException_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 description(self):
logger = lldb.formatters.Logger.Logger()
stream = lldb.SBStream()
self.valobj.GetExpressionPath(stream)
name_vo = self.valobj.CreateValueFromExpression("name","(NSString*)[" + stream.GetData() + " name]");
reason_vo = self.valobj.CreateValueFromExpression("reason","(NSString*)[" + stream.GetData() + " reason]");
if name_vo.IsValid() and reason_vo.IsValid():
return CFString.CFString_SummaryProvider(name_vo,None) + ' ' + CFString.CFString_SummaryProvider(reason_vo,None)
return '<variable is not NSException>'
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 == 'NSException':
wrapper = NSKnownException_SummaryProvider(valobj, class_data.sys_params)
statistics.metric_hit('code_notrun',valobj)
else:
wrapper = NSUnknownException_SummaryProvider(valobj, class_data.sys_params)
statistics.metric_hit('unknown_class',valobj.GetName() + " seen as " + name_string)
return wrapper;
def NSException_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.description();
except:
summary = None
logger >> "got summary " + str(summary)
if summary == None:
summary = '<variable is not NSException>'
return str(summary)
return 'Summary Unavailable'
def __lldb_init_module(debugger,dict):
debugger.HandleCommand("type summary add -F NSException.NSException_SummaryProvider NSException")
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