diff options
Diffstat (limited to 'lldb/source/Plugins/Language/ObjC/NSException.cpp')
| -rw-r--r-- | lldb/source/Plugins/Language/ObjC/NSException.cpp | 341 |
1 files changed, 169 insertions, 172 deletions
diff --git a/lldb/source/Plugins/Language/ObjC/NSException.cpp b/lldb/source/Plugins/Language/ObjC/NSException.cpp index f70e7c7356e..1609048d432 100644 --- a/lldb/source/Plugins/Language/ObjC/NSException.cpp +++ b/lldb/source/Plugins/Language/ObjC/NSException.cpp @@ -34,186 +34,183 @@ using namespace lldb; using namespace lldb_private; using namespace lldb_private::formatters; -bool -lldb_private::formatters::NSException_SummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) -{ - ProcessSP process_sp(valobj.GetProcessSP()); +bool lldb_private::formatters::NSException_SummaryProvider( + ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { + ProcessSP process_sp(valobj.GetProcessSP()); + if (!process_sp) + return false; + + lldb::addr_t ptr_value = LLDB_INVALID_ADDRESS; + + CompilerType valobj_type(valobj.GetCompilerType()); + Flags type_flags(valobj_type.GetTypeInfo()); + if (type_flags.AllClear(eTypeHasValue)) { + if (valobj.IsBaseClass() && valobj.GetParent()) + ptr_value = valobj.GetParent()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS); + } else + ptr_value = valobj.GetValueAsUnsigned(LLDB_INVALID_ADDRESS); + + if (ptr_value == LLDB_INVALID_ADDRESS) + return false; + size_t ptr_size = process_sp->GetAddressByteSize(); + lldb::addr_t name_location = ptr_value + 1 * ptr_size; + lldb::addr_t reason_location = ptr_value + 2 * ptr_size; + + Error error; + lldb::addr_t name = process_sp->ReadPointerFromMemory(name_location, error); + if (error.Fail() || name == LLDB_INVALID_ADDRESS) + return false; + + lldb::addr_t reason = + process_sp->ReadPointerFromMemory(reason_location, error); + if (error.Fail() || reason == LLDB_INVALID_ADDRESS) + return false; + + InferiorSizedWord name_isw(name, *process_sp); + InferiorSizedWord reason_isw(reason, *process_sp); + + CompilerType voidstar = process_sp->GetTarget() + .GetScratchClangASTContext() + ->GetBasicType(lldb::eBasicTypeVoid) + .GetPointerType(); + + ValueObjectSP name_sp = ValueObject::CreateValueObjectFromData( + "name_str", name_isw.GetAsData(process_sp->GetByteOrder()), + valobj.GetExecutionContextRef(), voidstar); + ValueObjectSP reason_sp = ValueObject::CreateValueObjectFromData( + "reason_str", reason_isw.GetAsData(process_sp->GetByteOrder()), + valobj.GetExecutionContextRef(), voidstar); + + if (!name_sp || !reason_sp) + return false; + + StreamString name_str_summary; + StreamString reason_str_summary; + if (NSStringSummaryProvider(*name_sp, name_str_summary, options) && + NSStringSummaryProvider(*reason_sp, reason_str_summary, options) && + !name_str_summary.Empty() && !reason_str_summary.Empty()) { + stream.Printf("name: %s - reason: %s", name_str_summary.GetData(), + reason_str_summary.GetData()); + return true; + } else + return false; +} + +class NSExceptionSyntheticFrontEnd : public SyntheticChildrenFrontEnd { +public: + NSExceptionSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) + : SyntheticChildrenFrontEnd(*valobj_sp) {} + + ~NSExceptionSyntheticFrontEnd() override = default; + // no need to delete m_child_ptr - it's kept alive by the cluster manager on + // our behalf + + size_t CalculateNumChildren() override { + if (m_child_ptr) + return 1; + if (m_child_sp) + return 1; + return 0; + } + + lldb::ValueObjectSP GetChildAtIndex(size_t idx) override { + if (idx != 0) + return lldb::ValueObjectSP(); + + if (m_child_ptr) + return m_child_ptr->GetSP(); + return m_child_sp; + } + + bool Update() override { + m_child_ptr = nullptr; + m_child_sp.reset(); + + ProcessSP process_sp(m_backend.GetProcessSP()); if (!process_sp) - return false; - - lldb::addr_t ptr_value = LLDB_INVALID_ADDRESS; - - CompilerType valobj_type(valobj.GetCompilerType()); + return false; + + lldb::addr_t userinfo_location = LLDB_INVALID_ADDRESS; + + CompilerType valobj_type(m_backend.GetCompilerType()); Flags type_flags(valobj_type.GetTypeInfo()); - if (type_flags.AllClear(eTypeHasValue)) - { - if (valobj.IsBaseClass() && valobj.GetParent()) - ptr_value = valobj.GetParent()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS); - } - else - ptr_value = valobj.GetValueAsUnsigned(LLDB_INVALID_ADDRESS); - - if (ptr_value == LLDB_INVALID_ADDRESS) - return false; + if (type_flags.AllClear(eTypeHasValue)) { + if (m_backend.IsBaseClass() && m_backend.GetParent()) + userinfo_location = + m_backend.GetParent()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS); + } else + userinfo_location = m_backend.GetValueAsUnsigned(LLDB_INVALID_ADDRESS); + + if (userinfo_location == LLDB_INVALID_ADDRESS) + return false; + size_t ptr_size = process_sp->GetAddressByteSize(); - lldb::addr_t name_location = ptr_value + 1 * ptr_size; - lldb::addr_t reason_location = ptr_value + 2 * ptr_size; - + + userinfo_location += 3 * ptr_size; Error error; - lldb::addr_t name = process_sp->ReadPointerFromMemory(name_location, error); - if (error.Fail() || name == LLDB_INVALID_ADDRESS) - return false; - - lldb::addr_t reason = process_sp->ReadPointerFromMemory(reason_location, error); - if (error.Fail() || reason == LLDB_INVALID_ADDRESS) - return false; - - InferiorSizedWord name_isw(name, *process_sp); - InferiorSizedWord reason_isw(reason, *process_sp); - - CompilerType voidstar = process_sp->GetTarget().GetScratchClangASTContext()->GetBasicType(lldb::eBasicTypeVoid).GetPointerType(); - - ValueObjectSP name_sp = ValueObject::CreateValueObjectFromData("name_str", name_isw.GetAsData(process_sp->GetByteOrder()), valobj.GetExecutionContextRef(), voidstar); - ValueObjectSP reason_sp = ValueObject::CreateValueObjectFromData("reason_str", reason_isw.GetAsData(process_sp->GetByteOrder()), valobj.GetExecutionContextRef(), voidstar); - - if (!name_sp || !reason_sp) - return false; - - StreamString name_str_summary; - StreamString reason_str_summary; - if (NSStringSummaryProvider(*name_sp, name_str_summary, options) && - NSStringSummaryProvider(*reason_sp, reason_str_summary, options) && - !name_str_summary.Empty() && - !reason_str_summary.Empty()) - { - stream.Printf("name: %s - reason: %s", name_str_summary.GetData(), reason_str_summary.GetData()); - return true; - } - else - return false; -} + lldb::addr_t userinfo = + process_sp->ReadPointerFromMemory(userinfo_location, error); + if (userinfo == LLDB_INVALID_ADDRESS || error.Fail()) + return false; + InferiorSizedWord isw(userinfo, *process_sp); + m_child_sp = CreateValueObjectFromData( + "userInfo", isw.GetAsData(process_sp->GetByteOrder()), + m_backend.GetExecutionContextRef(), + process_sp->GetTarget().GetScratchClangASTContext()->GetBasicType( + lldb::eBasicTypeObjCID)); + return false; + } -class NSExceptionSyntheticFrontEnd : public SyntheticChildrenFrontEnd -{ -public: - NSExceptionSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : - SyntheticChildrenFrontEnd(*valobj_sp) - {} - - ~NSExceptionSyntheticFrontEnd() override = default; - // no need to delete m_child_ptr - it's kept alive by the cluster manager on our behalf - - size_t - CalculateNumChildren() override - { - if (m_child_ptr) - return 1; - if (m_child_sp) - return 1; - return 0; - } - - lldb::ValueObjectSP - GetChildAtIndex(size_t idx) override - { - if (idx != 0) - return lldb::ValueObjectSP(); - - if (m_child_ptr) - return m_child_ptr->GetSP(); - return m_child_sp; - } - - bool - Update() override - { - m_child_ptr = nullptr; - m_child_sp.reset(); - - ProcessSP process_sp(m_backend.GetProcessSP()); - if (!process_sp) - return false; - - lldb::addr_t userinfo_location = LLDB_INVALID_ADDRESS; - - CompilerType valobj_type(m_backend.GetCompilerType()); - Flags type_flags(valobj_type.GetTypeInfo()); - if (type_flags.AllClear(eTypeHasValue)) - { - if (m_backend.IsBaseClass() && m_backend.GetParent()) - userinfo_location = m_backend.GetParent()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS); - } - else - userinfo_location = m_backend.GetValueAsUnsigned(LLDB_INVALID_ADDRESS); - - if (userinfo_location == LLDB_INVALID_ADDRESS) - return false; - - size_t ptr_size = process_sp->GetAddressByteSize(); - - userinfo_location += 3 * ptr_size; - Error error; - lldb::addr_t userinfo = process_sp->ReadPointerFromMemory(userinfo_location, error); - if (userinfo == LLDB_INVALID_ADDRESS || error.Fail()) - return false; - InferiorSizedWord isw(userinfo,*process_sp); - m_child_sp = CreateValueObjectFromData("userInfo", - isw.GetAsData(process_sp->GetByteOrder()), - m_backend.GetExecutionContextRef(), - process_sp->GetTarget().GetScratchClangASTContext()->GetBasicType(lldb::eBasicTypeObjCID)); - return false; - } - - bool - MightHaveChildren() override - { - return true; - } - - size_t - GetIndexOfChildWithName(const ConstString &name) override - { - static ConstString g___userInfo("userInfo"); - if (name == g___userInfo) - return 0; - return UINT32_MAX; - } + bool MightHaveChildren() override { return true; } + + size_t GetIndexOfChildWithName(const ConstString &name) override { + static ConstString g___userInfo("userInfo"); + if (name == g___userInfo) + return 0; + return UINT32_MAX; + } private: - // the child here can be "real" (i.e. an actual child of the root) or synthetized from raw memory - // if the former, I need to store a plain pointer to it - or else a loop of references will cause this entire hierarchy of values to leak - // if the latter, then I need to store a SharedPointer to it - so that it only goes away when everyone else in the cluster goes away - // oh joy! - ValueObject* m_child_ptr; - ValueObjectSP m_child_sp; + // the child here can be "real" (i.e. an actual child of the root) or + // synthetized from raw memory + // if the former, I need to store a plain pointer to it - or else a loop of + // references will cause this entire hierarchy of values to leak + // if the latter, then I need to store a SharedPointer to it - so that it only + // goes away when everyone else in the cluster goes away + // oh joy! + ValueObject *m_child_ptr; + ValueObjectSP m_child_sp; }; -SyntheticChildrenFrontEnd* -lldb_private::formatters::NSExceptionSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) -{ - lldb::ProcessSP process_sp (valobj_sp->GetProcessSP()); - if (!process_sp) - return nullptr; - ObjCLanguageRuntime *runtime = (ObjCLanguageRuntime*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC); - if (!runtime) - return nullptr; - - ObjCLanguageRuntime::ClassDescriptorSP descriptor(runtime->GetClassDescriptor(*valobj_sp.get())); - - if (!descriptor.get() || !descriptor->IsValid()) - return nullptr; - - const char* class_name = descriptor->GetClassName().GetCString(); - - if (!class_name || !*class_name) - return nullptr; - - if (!strcmp(class_name,"NSException")) - return (new NSExceptionSyntheticFrontEnd(valobj_sp)); - else if (!strcmp(class_name,"NSCFException")) - return (new NSExceptionSyntheticFrontEnd(valobj_sp)); - else if (!strcmp(class_name,"__NSCFException")) - return (new NSExceptionSyntheticFrontEnd(valobj_sp)); - +SyntheticChildrenFrontEnd * +lldb_private::formatters::NSExceptionSyntheticFrontEndCreator( + CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { + lldb::ProcessSP process_sp(valobj_sp->GetProcessSP()); + if (!process_sp) return nullptr; + ObjCLanguageRuntime *runtime = + (ObjCLanguageRuntime *)process_sp->GetLanguageRuntime( + lldb::eLanguageTypeObjC); + if (!runtime) + return nullptr; + + ObjCLanguageRuntime::ClassDescriptorSP descriptor( + runtime->GetClassDescriptor(*valobj_sp.get())); + + if (!descriptor.get() || !descriptor->IsValid()) + return nullptr; + + const char *class_name = descriptor->GetClassName().GetCString(); + + if (!class_name || !*class_name) + return nullptr; + + if (!strcmp(class_name, "NSException")) + return (new NSExceptionSyntheticFrontEnd(valobj_sp)); + else if (!strcmp(class_name, "NSCFException")) + return (new NSExceptionSyntheticFrontEnd(valobj_sp)); + else if (!strcmp(class_name, "__NSCFException")) + return (new NSExceptionSyntheticFrontEnd(valobj_sp)); + + return nullptr; } |
