diff options
Diffstat (limited to 'lldb/source/Plugins/Language/ObjC/NSString.cpp')
| -rw-r--r-- | lldb/source/Plugins/Language/ObjC/NSString.cpp | 717 |
1 files changed, 359 insertions, 358 deletions
diff --git a/lldb/source/Plugins/Language/ObjC/NSString.cpp b/lldb/source/Plugins/Language/ObjC/NSString.cpp index 80896631baf..0f2a0595da8 100644 --- a/lldb/source/Plugins/Language/ObjC/NSString.cpp +++ b/lldb/source/Plugins/Language/ObjC/NSString.cpp @@ -1,4 +1,5 @@ -//===-- NSString.cpp ----------------------------------------------*- C++ -*-===// +//===-- NSString.cpp ----------------------------------------------*- C++ +//-*-===// // // The LLVM Compiler Infrastructure // @@ -26,380 +27,380 @@ using namespace lldb; using namespace lldb_private; using namespace lldb_private::formatters; -std::map<ConstString, CXXFunctionSummaryFormat::Callback>& -NSString_Additionals::GetAdditionalSummaries () -{ - static std::map<ConstString, CXXFunctionSummaryFormat::Callback> g_map; - return g_map; +std::map<ConstString, CXXFunctionSummaryFormat::Callback> & +NSString_Additionals::GetAdditionalSummaries() { + static std::map<ConstString, CXXFunctionSummaryFormat::Callback> g_map; + return g_map; } -static CompilerType -GetNSPathStore2Type (Target &target) -{ - static ConstString g_type_name("__lldb_autogen_nspathstore2"); - - ClangASTContext *ast_ctx = target.GetScratchClangASTContext(); - - if (!ast_ctx) - return CompilerType(); - - CompilerType voidstar = ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType(); - CompilerType uint32 = ast_ctx->GetBuiltinTypeForEncodingAndBitSize(eEncodingUint, 32); - - return ast_ctx->GetOrCreateStructForIdentifier(g_type_name, { - {"isa",voidstar}, - {"lengthAndRef",uint32}, - {"buffer",voidstar} - }); +static CompilerType GetNSPathStore2Type(Target &target) { + static ConstString g_type_name("__lldb_autogen_nspathstore2"); + + ClangASTContext *ast_ctx = target.GetScratchClangASTContext(); + + if (!ast_ctx) + return CompilerType(); + + CompilerType voidstar = + ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType(); + CompilerType uint32 = + ast_ctx->GetBuiltinTypeForEncodingAndBitSize(eEncodingUint, 32); + + return ast_ctx->GetOrCreateStructForIdentifier( + g_type_name, + {{"isa", voidstar}, {"lengthAndRef", uint32}, {"buffer", voidstar}}); } -bool -lldb_private::formatters::NSStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& summary_options) -{ - static ConstString g_TypeHint("NSString"); - - ProcessSP process_sp = valobj.GetProcessSP(); - if (!process_sp) - return false; - - ObjCLanguageRuntime* runtime = (ObjCLanguageRuntime*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC); - - if (!runtime) - return false; - - ObjCLanguageRuntime::ClassDescriptorSP descriptor(runtime->GetClassDescriptor(valobj)); - - if (!descriptor.get() || !descriptor->IsValid()) - return false; - - uint32_t ptr_size = process_sp->GetAddressByteSize(); - - lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0); - - if (!valobj_addr) - return false; - - ConstString class_name_cs = descriptor->GetClassName(); - const char* class_name = class_name_cs.GetCString(); - - if (!class_name || !*class_name) - return false; - - bool is_tagged_ptr = (0 == strcmp(class_name,"NSTaggedPointerString")) && descriptor->GetTaggedPointerInfo(); - // for a tagged pointer, the descriptor has everything we need - if (is_tagged_ptr) - return NSTaggedString_SummaryProvider(valobj, descriptor, stream, summary_options); - - auto& additionals_map(NSString_Additionals::GetAdditionalSummaries()); - auto iter = additionals_map.find(class_name_cs), end = additionals_map.end(); - if (iter != end) - return iter->second(valobj, stream, summary_options); - - // if not a tagged pointer that we know about, try the normal route - uint64_t info_bits_location = valobj_addr + ptr_size; - if (process_sp->GetByteOrder() != lldb::eByteOrderLittle) - info_bits_location += 3; - - Error error; - - uint8_t info_bits = process_sp->ReadUnsignedIntegerFromMemory(info_bits_location, 1, 0, error); - if (error.Fail()) - return false; - - bool is_mutable = (info_bits & 1) == 1; - bool is_inline = (info_bits & 0x60) == 0; - bool has_explicit_length = (info_bits & (1 | 4)) != 4; - bool is_unicode = (info_bits & 0x10) == 0x10; - bool is_path_store = strcmp(class_name,"NSPathStore2") == 0; - bool has_null = (info_bits & 8) == 8; - - size_t explicit_length = 0; - if (!has_null && has_explicit_length && !is_path_store) - { - lldb::addr_t explicit_length_offset = 2*ptr_size; - if (is_mutable && !is_inline) - explicit_length_offset = explicit_length_offset + ptr_size; // notInlineMutable.length; - else if (is_inline) - explicit_length = explicit_length + 0; // inline1.length; - else if (!is_inline && !is_mutable) - explicit_length_offset = explicit_length_offset + ptr_size; // notInlineImmutable1.length; - else - explicit_length_offset = 0; - - if (explicit_length_offset) - { - explicit_length_offset = valobj_addr + explicit_length_offset; - explicit_length = process_sp->ReadUnsignedIntegerFromMemory(explicit_length_offset, 4, 0, error); - } - } - - if (strcmp(class_name,"NSString") && - strcmp(class_name,"CFStringRef") && - strcmp(class_name,"CFMutableStringRef") && - strcmp(class_name,"__NSCFConstantString") && - strcmp(class_name,"__NSCFString") && - strcmp(class_name,"NSCFConstantString") && - strcmp(class_name,"NSCFString") && - strcmp(class_name,"NSPathStore2")) - { - // not one of us - but tell me class name - stream.Printf("class name = %s",class_name); - return true; - } - - std::string prefix,suffix; - if (Language* language = Language::FindPlugin(summary_options.GetLanguage())) - { - if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix, suffix)) - { - prefix.clear(); - suffix.clear(); - } - } - - StringPrinter::ReadStringAndDumpToStreamOptions options(valobj); - options.SetPrefixToken(prefix); - options.SetSuffixToken(suffix); - - if (is_mutable) - { - uint64_t location = 2 * ptr_size + valobj_addr; - location = process_sp->ReadPointerFromMemory(location, error); - if (error.Fail()) - return false; - if (has_explicit_length && is_unicode) - { - options.SetLocation(location); - options.SetProcessSP(process_sp); - options.SetStream(&stream); - options.SetQuote('"'); - options.SetSourceSize(explicit_length); - options.SetNeedsZeroTermination(false); - options.SetIgnoreMaxLength(summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryUncapped); - options.SetBinaryZeroIsTerminator(false); - options.SetLanguage(summary_options.GetLanguage()); - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF16>(options); - } - else - { - options.SetLocation(location+1); - options.SetProcessSP(process_sp); - options.SetStream(&stream); - options.SetSourceSize(explicit_length); - options.SetNeedsZeroTermination(false); - options.SetIgnoreMaxLength(summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryUncapped); - options.SetBinaryZeroIsTerminator(false); - options.SetLanguage(summary_options.GetLanguage()); - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::ASCII>(options); - } +bool lldb_private::formatters::NSStringSummaryProvider( + ValueObject &valobj, Stream &stream, + const TypeSummaryOptions &summary_options) { + static ConstString g_TypeHint("NSString"); + + ProcessSP process_sp = valobj.GetProcessSP(); + if (!process_sp) + return false; + + ObjCLanguageRuntime *runtime = + (ObjCLanguageRuntime *)process_sp->GetLanguageRuntime( + lldb::eLanguageTypeObjC); + + if (!runtime) + return false; + + ObjCLanguageRuntime::ClassDescriptorSP descriptor( + runtime->GetClassDescriptor(valobj)); + + if (!descriptor.get() || !descriptor->IsValid()) + return false; + + uint32_t ptr_size = process_sp->GetAddressByteSize(); + + lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0); + + if (!valobj_addr) + return false; + + ConstString class_name_cs = descriptor->GetClassName(); + const char *class_name = class_name_cs.GetCString(); + + if (!class_name || !*class_name) + return false; + + bool is_tagged_ptr = (0 == strcmp(class_name, "NSTaggedPointerString")) && + descriptor->GetTaggedPointerInfo(); + // for a tagged pointer, the descriptor has everything we need + if (is_tagged_ptr) + return NSTaggedString_SummaryProvider(valobj, descriptor, stream, + summary_options); + + auto &additionals_map(NSString_Additionals::GetAdditionalSummaries()); + auto iter = additionals_map.find(class_name_cs), end = additionals_map.end(); + if (iter != end) + return iter->second(valobj, stream, summary_options); + + // if not a tagged pointer that we know about, try the normal route + uint64_t info_bits_location = valobj_addr + ptr_size; + if (process_sp->GetByteOrder() != lldb::eByteOrderLittle) + info_bits_location += 3; + + Error error; + + uint8_t info_bits = process_sp->ReadUnsignedIntegerFromMemory( + info_bits_location, 1, 0, error); + if (error.Fail()) + return false; + + bool is_mutable = (info_bits & 1) == 1; + bool is_inline = (info_bits & 0x60) == 0; + bool has_explicit_length = (info_bits & (1 | 4)) != 4; + bool is_unicode = (info_bits & 0x10) == 0x10; + bool is_path_store = strcmp(class_name, "NSPathStore2") == 0; + bool has_null = (info_bits & 8) == 8; + + size_t explicit_length = 0; + if (!has_null && has_explicit_length && !is_path_store) { + lldb::addr_t explicit_length_offset = 2 * ptr_size; + if (is_mutable && !is_inline) + explicit_length_offset = + explicit_length_offset + ptr_size; // notInlineMutable.length; + else if (is_inline) + explicit_length = explicit_length + 0; // inline1.length; + else if (!is_inline && !is_mutable) + explicit_length_offset = + explicit_length_offset + ptr_size; // notInlineImmutable1.length; + else + explicit_length_offset = 0; + + if (explicit_length_offset) { + explicit_length_offset = valobj_addr + explicit_length_offset; + explicit_length = process_sp->ReadUnsignedIntegerFromMemory( + explicit_length_offset, 4, 0, error); } - else if (is_inline && has_explicit_length && !is_unicode && !is_path_store && !is_mutable) - { - uint64_t location = 3 * ptr_size + valobj_addr; - - options.SetLocation(location); - options.SetProcessSP(process_sp); - options.SetStream(&stream); - options.SetQuote('"'); - options.SetSourceSize(explicit_length); - options.SetIgnoreMaxLength(summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryUncapped); - options.SetLanguage(summary_options.GetLanguage()); - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::ASCII> (options); + } + + if (strcmp(class_name, "NSString") && strcmp(class_name, "CFStringRef") && + strcmp(class_name, "CFMutableStringRef") && + strcmp(class_name, "__NSCFConstantString") && + strcmp(class_name, "__NSCFString") && + strcmp(class_name, "NSCFConstantString") && + strcmp(class_name, "NSCFString") && strcmp(class_name, "NSPathStore2")) { + // not one of us - but tell me class name + stream.Printf("class name = %s", class_name); + return true; + } + + std::string prefix, suffix; + if (Language *language = + Language::FindPlugin(summary_options.GetLanguage())) { + if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix, + suffix)) { + prefix.clear(); + suffix.clear(); } - else if (is_unicode) - { - uint64_t location = valobj_addr + 2*ptr_size; - if (is_inline) - { - if (!has_explicit_length) - { - stream.Printf("found new combo"); - return true; - } - else - location += ptr_size; - } - else - { - location = process_sp->ReadPointerFromMemory(location, error); - if (error.Fail()) - return false; - } - options.SetLocation(location); - options.SetProcessSP(process_sp); - options.SetStream(&stream); - options.SetQuote('"'); - options.SetSourceSize(explicit_length); - options.SetNeedsZeroTermination(has_explicit_length == false); - options.SetIgnoreMaxLength(summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryUncapped); - options.SetBinaryZeroIsTerminator(has_explicit_length == false); - options.SetLanguage(summary_options.GetLanguage()); - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF16> (options); + } + + StringPrinter::ReadStringAndDumpToStreamOptions options(valobj); + options.SetPrefixToken(prefix); + options.SetSuffixToken(suffix); + + if (is_mutable) { + uint64_t location = 2 * ptr_size + valobj_addr; + location = process_sp->ReadPointerFromMemory(location, error); + if (error.Fail()) + return false; + if (has_explicit_length && is_unicode) { + options.SetLocation(location); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetQuote('"'); + options.SetSourceSize(explicit_length); + options.SetNeedsZeroTermination(false); + options.SetIgnoreMaxLength(summary_options.GetCapping() == + TypeSummaryCapping::eTypeSummaryUncapped); + options.SetBinaryZeroIsTerminator(false); + options.SetLanguage(summary_options.GetLanguage()); + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::UTF16>(options); + } else { + options.SetLocation(location + 1); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetSourceSize(explicit_length); + options.SetNeedsZeroTermination(false); + options.SetIgnoreMaxLength(summary_options.GetCapping() == + TypeSummaryCapping::eTypeSummaryUncapped); + options.SetBinaryZeroIsTerminator(false); + options.SetLanguage(summary_options.GetLanguage()); + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::ASCII>(options); } - else if (is_path_store) - { - ProcessStructReader reader(valobj.GetProcessSP().get(), valobj.GetValueAsUnsigned(0), GetNSPathStore2Type(*valobj.GetTargetSP())); - explicit_length = reader.GetField<uint32_t>(ConstString("lengthAndRef")) >> 20; - lldb::addr_t location = valobj.GetValueAsUnsigned(0) + ptr_size + 4; - - options.SetLocation(location); - options.SetProcessSP(process_sp); - options.SetStream(&stream); - options.SetQuote('"'); - options.SetSourceSize(explicit_length); - options.SetNeedsZeroTermination(has_explicit_length == false); - options.SetIgnoreMaxLength(summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryUncapped); - options.SetBinaryZeroIsTerminator(has_explicit_length == false); - options.SetLanguage(summary_options.GetLanguage()); - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF16> (options); + } else if (is_inline && has_explicit_length && !is_unicode && + !is_path_store && !is_mutable) { + uint64_t location = 3 * ptr_size + valobj_addr; + + options.SetLocation(location); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetQuote('"'); + options.SetSourceSize(explicit_length); + options.SetIgnoreMaxLength(summary_options.GetCapping() == + TypeSummaryCapping::eTypeSummaryUncapped); + options.SetLanguage(summary_options.GetLanguage()); + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::ASCII>(options); + } else if (is_unicode) { + uint64_t location = valobj_addr + 2 * ptr_size; + if (is_inline) { + if (!has_explicit_length) { + stream.Printf("found new combo"); + return true; + } else + location += ptr_size; + } else { + location = process_sp->ReadPointerFromMemory(location, error); + if (error.Fail()) + return false; } - else if (is_inline) - { - uint64_t location = valobj_addr + 2*ptr_size; - if (!has_explicit_length) - { - // in this kind of string, the byte before the string content is a length byte - // so let's try and use it to handle the embedded NUL case - Error error; - explicit_length = process_sp->ReadUnsignedIntegerFromMemory(location, 1, 0, error); - if (error.Fail() || explicit_length == 0) - has_explicit_length = false; - else - has_explicit_length = true; - location++; - } - options.SetLocation(location); - options.SetProcessSP(process_sp); - options.SetStream(&stream); - options.SetSourceSize(explicit_length); - options.SetNeedsZeroTermination(!has_explicit_length); - options.SetIgnoreMaxLength(summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryUncapped); - options.SetBinaryZeroIsTerminator(!has_explicit_length); - options.SetLanguage(summary_options.GetLanguage()); - if (has_explicit_length) - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF8>(options); - else - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::ASCII>(options); + options.SetLocation(location); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetQuote('"'); + options.SetSourceSize(explicit_length); + options.SetNeedsZeroTermination(has_explicit_length == false); + options.SetIgnoreMaxLength(summary_options.GetCapping() == + TypeSummaryCapping::eTypeSummaryUncapped); + options.SetBinaryZeroIsTerminator(has_explicit_length == false); + options.SetLanguage(summary_options.GetLanguage()); + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::UTF16>(options); + } else if (is_path_store) { + ProcessStructReader reader(valobj.GetProcessSP().get(), + valobj.GetValueAsUnsigned(0), + GetNSPathStore2Type(*valobj.GetTargetSP())); + explicit_length = + reader.GetField<uint32_t>(ConstString("lengthAndRef")) >> 20; + lldb::addr_t location = valobj.GetValueAsUnsigned(0) + ptr_size + 4; + + options.SetLocation(location); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetQuote('"'); + options.SetSourceSize(explicit_length); + options.SetNeedsZeroTermination(has_explicit_length == false); + options.SetIgnoreMaxLength(summary_options.GetCapping() == + TypeSummaryCapping::eTypeSummaryUncapped); + options.SetBinaryZeroIsTerminator(has_explicit_length == false); + options.SetLanguage(summary_options.GetLanguage()); + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::UTF16>(options); + } else if (is_inline) { + uint64_t location = valobj_addr + 2 * ptr_size; + if (!has_explicit_length) { + // in this kind of string, the byte before the string content is a length + // byte + // so let's try and use it to handle the embedded NUL case + Error error; + explicit_length = + process_sp->ReadUnsignedIntegerFromMemory(location, 1, 0, error); + if (error.Fail() || explicit_length == 0) + has_explicit_length = false; + else + has_explicit_length = true; + location++; } + options.SetLocation(location); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetSourceSize(explicit_length); + options.SetNeedsZeroTermination(!has_explicit_length); + options.SetIgnoreMaxLength(summary_options.GetCapping() == + TypeSummaryCapping::eTypeSummaryUncapped); + options.SetBinaryZeroIsTerminator(!has_explicit_length); + options.SetLanguage(summary_options.GetLanguage()); + if (has_explicit_length) + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::UTF8>(options); else - { - uint64_t location = valobj_addr + 2*ptr_size; - location = process_sp->ReadPointerFromMemory(location, error); - if (error.Fail()) - return false; - if (has_explicit_length && !has_null) - explicit_length++; // account for the fact that there is no NULL and we need to have one added - options.SetLocation(location); - options.SetProcessSP(process_sp); - options.SetStream(&stream); - options.SetSourceSize(explicit_length); - options.SetIgnoreMaxLength(summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryUncapped); - options.SetLanguage(summary_options.GetLanguage()); - return StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::ASCII>(options); - } + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::ASCII>(options); + } else { + uint64_t location = valobj_addr + 2 * ptr_size; + location = process_sp->ReadPointerFromMemory(location, error); + if (error.Fail()) + return false; + if (has_explicit_length && !has_null) + explicit_length++; // account for the fact that there is no NULL and we + // need to have one added + options.SetLocation(location); + options.SetProcessSP(process_sp); + options.SetStream(&stream); + options.SetSourceSize(explicit_length); + options.SetIgnoreMaxLength(summary_options.GetCapping() == + TypeSummaryCapping::eTypeSummaryUncapped); + options.SetLanguage(summary_options.GetLanguage()); + return StringPrinter::ReadStringAndDumpToStream< + StringPrinter::StringElementType::ASCII>(options); + } } -bool -lldb_private::formatters::NSAttributedStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) -{ - TargetSP target_sp(valobj.GetTargetSP()); - if (!target_sp) - return false; - uint32_t addr_size = target_sp->GetArchitecture().GetAddressByteSize(); - uint64_t pointer_value = valobj.GetValueAsUnsigned(0); - if (!pointer_value) - return false; - pointer_value += addr_size; - CompilerType type(valobj.GetCompilerType()); - ExecutionContext exe_ctx(target_sp,false); - ValueObjectSP child_ptr_sp(valobj.CreateValueObjectFromAddress("string_ptr", pointer_value, exe_ctx, type)); - if (!child_ptr_sp) - return false; - DataExtractor data; - Error error; - child_ptr_sp->GetData(data, error); - if (error.Fail()) - return false; - ValueObjectSP child_sp(child_ptr_sp->CreateValueObjectFromData("string_data", data, exe_ctx, type)); - child_sp->GetValueAsUnsigned(0); - if (child_sp) - return NSStringSummaryProvider(*child_sp, stream, options); +bool lldb_private::formatters::NSAttributedStringSummaryProvider( + ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { + TargetSP target_sp(valobj.GetTargetSP()); + if (!target_sp) + return false; + uint32_t addr_size = target_sp->GetArchitecture().GetAddressByteSize(); + uint64_t pointer_value = valobj.GetValueAsUnsigned(0); + if (!pointer_value) + return false; + pointer_value += addr_size; + CompilerType type(valobj.GetCompilerType()); + ExecutionContext exe_ctx(target_sp, false); + ValueObjectSP child_ptr_sp(valobj.CreateValueObjectFromAddress( + "string_ptr", pointer_value, exe_ctx, type)); + if (!child_ptr_sp) return false; + DataExtractor data; + Error error; + child_ptr_sp->GetData(data, error); + if (error.Fail()) + return false; + ValueObjectSP child_sp(child_ptr_sp->CreateValueObjectFromData( + "string_data", data, exe_ctx, type)); + child_sp->GetValueAsUnsigned(0); + if (child_sp) + return NSStringSummaryProvider(*child_sp, stream, options); + return false; } -bool -lldb_private::formatters::NSMutableAttributedStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) -{ - return NSAttributedStringSummaryProvider(valobj, stream, options); +bool lldb_private::formatters::NSMutableAttributedStringSummaryProvider( + ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { + return NSAttributedStringSummaryProvider(valobj, stream, options); } -bool -lldb_private::formatters::NSTaggedString_SummaryProvider (ValueObject& valobj, ObjCLanguageRuntime::ClassDescriptorSP descriptor, Stream& stream, const TypeSummaryOptions& summary_options) -{ - static ConstString g_TypeHint("NSString"); - - if (!descriptor) - return false; - uint64_t len_bits = 0, data_bits = 0; - if (!descriptor->GetTaggedPointerInfo(&len_bits,&data_bits,nullptr)) - return false; - - static const int g_MaxNonBitmaskedLen = 7; //TAGGED_STRING_UNPACKED_MAXLEN - static const int g_SixbitMaxLen = 9; - static const int g_fiveBitMaxLen = 11; - - static const char *sixBitToCharLookup = "eilotrm.apdnsIc ufkMShjTRxgC4013" "bDNvwyUL2O856P-B79AFKEWV_zGJ/HYX"; - - if (len_bits > g_fiveBitMaxLen) - return false; - - std::string prefix,suffix; - if (Language* language = Language::FindPlugin(summary_options.GetLanguage())) - { - if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix, suffix)) - { - prefix.clear(); - suffix.clear(); - } - } - - // this is a fairly ugly trick - pretend that the numeric value is actually a char* - // this works under a few assumptions: - // little endian architecture - // sizeof(uint64_t) > g_MaxNonBitmaskedLen - if (len_bits <= g_MaxNonBitmaskedLen) - { - stream.Printf("%s",prefix.c_str()); - stream.Printf("\"%s\"",(const char*)&data_bits); - stream.Printf("%s",suffix.c_str()); - return true; - } - - // if the data is bitmasked, we need to actually process the bytes - uint8_t bitmask = 0; - uint8_t shift_offset = 0; - - if (len_bits <= g_SixbitMaxLen) - { - bitmask = 0x03f; - shift_offset = 6; - } - else - { - bitmask = 0x01f; - shift_offset = 5; - } - - std::vector<uint8_t> bytes; - bytes.resize(len_bits); - for (; len_bits > 0; data_bits >>= shift_offset, --len_bits) - { - uint8_t packed = data_bits & bitmask; - bytes.insert(bytes.begin(), sixBitToCharLookup[packed]); +bool lldb_private::formatters::NSTaggedString_SummaryProvider( + ValueObject &valobj, ObjCLanguageRuntime::ClassDescriptorSP descriptor, + Stream &stream, const TypeSummaryOptions &summary_options) { + static ConstString g_TypeHint("NSString"); + + if (!descriptor) + return false; + uint64_t len_bits = 0, data_bits = 0; + if (!descriptor->GetTaggedPointerInfo(&len_bits, &data_bits, nullptr)) + return false; + + static const int g_MaxNonBitmaskedLen = 7; // TAGGED_STRING_UNPACKED_MAXLEN + static const int g_SixbitMaxLen = 9; + static const int g_fiveBitMaxLen = 11; + + static const char *sixBitToCharLookup = "eilotrm.apdnsIc ufkMShjTRxgC4013" + "bDNvwyUL2O856P-B79AFKEWV_zGJ/HYX"; + + if (len_bits > g_fiveBitMaxLen) + return false; + + std::string prefix, suffix; + if (Language *language = + Language::FindPlugin(summary_options.GetLanguage())) { + if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix, + suffix)) { + prefix.clear(); + suffix.clear(); } - - stream.Printf("%s",prefix.c_str()); - stream.Printf("\"%s\"",&bytes[0]); - stream.Printf("%s",suffix.c_str()); + } + + // this is a fairly ugly trick - pretend that the numeric value is actually a + // char* + // this works under a few assumptions: + // little endian architecture + // sizeof(uint64_t) > g_MaxNonBitmaskedLen + if (len_bits <= g_MaxNonBitmaskedLen) { + stream.Printf("%s", prefix.c_str()); + stream.Printf("\"%s\"", (const char *)&data_bits); + stream.Printf("%s", suffix.c_str()); return true; + } + + // if the data is bitmasked, we need to actually process the bytes + uint8_t bitmask = 0; + uint8_t shift_offset = 0; + + if (len_bits <= g_SixbitMaxLen) { + bitmask = 0x03f; + shift_offset = 6; + } else { + bitmask = 0x01f; + shift_offset = 5; + } + + std::vector<uint8_t> bytes; + bytes.resize(len_bits); + for (; len_bits > 0; data_bits >>= shift_offset, --len_bits) { + uint8_t packed = data_bits & bitmask; + bytes.insert(bytes.begin(), sixBitToCharLookup[packed]); + } + + stream.Printf("%s", prefix.c_str()); + stream.Printf("\"%s\"", &bytes[0]); + stream.Printf("%s", suffix.c_str()); + return true; } |
