diff options
Diffstat (limited to 'lldb/source/Plugins/Language/ObjC/NSError.cpp')
| -rw-r--r-- | lldb/source/Plugins/Language/ObjC/NSError.cpp | 347 |
1 files changed, 169 insertions, 178 deletions
diff --git a/lldb/source/Plugins/Language/ObjC/NSError.cpp b/lldb/source/Plugins/Language/ObjC/NSError.cpp index 4bfb024206d..bad22b13a00 100644 --- a/lldb/source/Plugins/Language/ObjC/NSError.cpp +++ b/lldb/source/Plugins/Language/ObjC/NSError.cpp @@ -34,196 +34,187 @@ using namespace lldb; using namespace lldb_private; using namespace lldb_private::formatters; -static lldb::addr_t -DerefToNSErrorPointer (ValueObject& valobj) -{ - CompilerType valobj_type(valobj.GetCompilerType()); - Flags type_flags(valobj_type.GetTypeInfo()); - if (type_flags.AllClear(eTypeHasValue)) - { - if (valobj.IsBaseClass() && valobj.GetParent()) - return valobj.GetParent()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS); - } - else - { - lldb::addr_t ptr_value = valobj.GetValueAsUnsigned(LLDB_INVALID_ADDRESS); - if (type_flags.AllSet(eTypeIsPointer)) - { - CompilerType pointee_type(valobj_type.GetPointeeType()); - Flags pointee_flags(pointee_type.GetTypeInfo()); - if (pointee_flags.AllSet(eTypeIsPointer)) - { - if (ProcessSP process_sp = valobj.GetProcessSP()) - { - Error error; - ptr_value = process_sp->ReadPointerFromMemory(ptr_value, error); - } - } +static lldb::addr_t DerefToNSErrorPointer(ValueObject &valobj) { + CompilerType valobj_type(valobj.GetCompilerType()); + Flags type_flags(valobj_type.GetTypeInfo()); + if (type_flags.AllClear(eTypeHasValue)) { + if (valobj.IsBaseClass() && valobj.GetParent()) + return valobj.GetParent()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS); + } else { + lldb::addr_t ptr_value = valobj.GetValueAsUnsigned(LLDB_INVALID_ADDRESS); + if (type_flags.AllSet(eTypeIsPointer)) { + CompilerType pointee_type(valobj_type.GetPointeeType()); + Flags pointee_flags(pointee_type.GetTypeInfo()); + if (pointee_flags.AllSet(eTypeIsPointer)) { + if (ProcessSP process_sp = valobj.GetProcessSP()) { + Error error; + ptr_value = process_sp->ReadPointerFromMemory(ptr_value, error); } - return ptr_value; + } } - - return LLDB_INVALID_ADDRESS; + return ptr_value; + } + + return LLDB_INVALID_ADDRESS; +} + +bool lldb_private::formatters::NSError_SummaryProvider( + ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { + ProcessSP process_sp(valobj.GetProcessSP()); + if (!process_sp) + return false; + + lldb::addr_t ptr_value = DerefToNSErrorPointer(valobj); + if (ptr_value == LLDB_INVALID_ADDRESS) + return false; + + size_t ptr_size = process_sp->GetAddressByteSize(); + lldb::addr_t code_location = ptr_value + 2 * ptr_size; + lldb::addr_t domain_location = ptr_value + 3 * ptr_size; + + Error error; + uint64_t code = process_sp->ReadUnsignedIntegerFromMemory(code_location, + ptr_size, 0, error); + if (error.Fail()) + return false; + + lldb::addr_t domain_str_value = + process_sp->ReadPointerFromMemory(domain_location, error); + if (error.Fail() || domain_str_value == LLDB_INVALID_ADDRESS) + return false; + + if (!domain_str_value) { + stream.Printf("domain: nil - code: %" PRIu64, code); + return true; + } + + InferiorSizedWord isw(domain_str_value, *process_sp); + + ValueObjectSP domain_str_sp = ValueObject::CreateValueObjectFromData( + "domain_str", isw.GetAsData(process_sp->GetByteOrder()), + valobj.GetExecutionContextRef(), process_sp->GetTarget() + .GetScratchClangASTContext() + ->GetBasicType(lldb::eBasicTypeVoid) + .GetPointerType()); + + if (!domain_str_sp) + return false; + + StreamString domain_str_summary; + if (NSStringSummaryProvider(*domain_str_sp, domain_str_summary, options) && + !domain_str_summary.Empty()) { + stream.Printf("domain: %s - code: %" PRIu64, domain_str_summary.GetData(), + code); + return true; + } else { + stream.Printf("domain: nil - code: %" PRIu64, code); + return true; + } } -bool -lldb_private::formatters::NSError_SummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) -{ - ProcessSP process_sp(valobj.GetProcessSP()); +class NSErrorSyntheticFrontEnd : public SyntheticChildrenFrontEnd { +public: + NSErrorSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) + : SyntheticChildrenFrontEnd(*valobj_sp) {} + + ~NSErrorSyntheticFrontEnd() 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 = DerefToNSErrorPointer(valobj); - if (ptr_value == LLDB_INVALID_ADDRESS) - return false; + return false; + + lldb::addr_t userinfo_location = DerefToNSErrorPointer(m_backend); + if (userinfo_location == LLDB_INVALID_ADDRESS) + return false; size_t ptr_size = process_sp->GetAddressByteSize(); - lldb::addr_t code_location = ptr_value + 2 * ptr_size; - lldb::addr_t domain_location = ptr_value + 3 * ptr_size; - + + userinfo_location += 4 * ptr_size; Error error; - uint64_t code = process_sp->ReadUnsignedIntegerFromMemory(code_location, ptr_size, 0, error); - if (error.Fail()) - return false; - - lldb::addr_t domain_str_value = process_sp->ReadPointerFromMemory(domain_location, error); - if (error.Fail() || domain_str_value == LLDB_INVALID_ADDRESS) - return false; - - if (!domain_str_value) - { - stream.Printf("domain: nil - code: %" PRIu64, code); - return true; - } - - InferiorSizedWord isw(domain_str_value, *process_sp); - - ValueObjectSP domain_str_sp = ValueObject::CreateValueObjectFromData("domain_str", isw.GetAsData(process_sp->GetByteOrder()), valobj.GetExecutionContextRef(), process_sp->GetTarget().GetScratchClangASTContext()->GetBasicType(lldb::eBasicTypeVoid).GetPointerType()); - - if (!domain_str_sp) - return false; - - StreamString domain_str_summary; - if (NSStringSummaryProvider(*domain_str_sp, domain_str_summary, options) && !domain_str_summary.Empty()) - { - stream.Printf("domain: %s - code: %" PRIu64, domain_str_summary.GetData(), code); - return true; - } - else - { - stream.Printf("domain: nil - code: %" PRIu64, code); - return true; - } -} + 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 NSErrorSyntheticFrontEnd : public SyntheticChildrenFrontEnd -{ -public: - NSErrorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : - SyntheticChildrenFrontEnd(*valobj_sp) - {} - - ~NSErrorSyntheticFrontEnd() 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 = DerefToNSErrorPointer(m_backend); - if (userinfo_location == LLDB_INVALID_ADDRESS) - return false; - - size_t ptr_size = process_sp->GetAddressByteSize(); - - userinfo_location += 4 * 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::NSErrorSyntheticFrontEndCreator (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,"NSError")) - return (new NSErrorSyntheticFrontEnd(valobj_sp)); - else if (!strcmp(class_name,"__NSCFError")) - return (new NSErrorSyntheticFrontEnd(valobj_sp)); - +SyntheticChildrenFrontEnd * +lldb_private::formatters::NSErrorSyntheticFrontEndCreator( + 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, "NSError")) + return (new NSErrorSyntheticFrontEnd(valobj_sp)); + else if (!strcmp(class_name, "__NSCFError")) + return (new NSErrorSyntheticFrontEnd(valobj_sp)); + + return nullptr; } |
