| //===-- LibCxx.cpp ----------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LibCxx.h" |
| |
| // C Includes |
| // C++ Includes |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/Error.h" |
| #include "lldb/Core/FormatEntity.h" |
| #include "lldb/Core/Stream.h" |
| #include "lldb/Core/ValueObject.h" |
| #include "lldb/Core/ValueObjectConstResult.h" |
| #include "lldb/DataFormatters/FormattersHelpers.h" |
| #include "lldb/DataFormatters/StringPrinter.h" |
| #include "lldb/DataFormatters/TypeSummary.h" |
| #include "lldb/DataFormatters/VectorIterator.h" |
| #include "lldb/Host/Endian.h" |
| #include "lldb/Symbol/ClangASTContext.h" |
| #include "lldb/Target/Target.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace lldb_private::formatters; |
| |
| bool |
| lldb_private::formatters::LibcxxSmartPointerSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) |
| { |
| ValueObjectSP valobj_sp(valobj.GetNonSyntheticValue()); |
| if (!valobj_sp) |
| return false; |
| ValueObjectSP ptr_sp(valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true)); |
| ValueObjectSP count_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_owners_")} )); |
| ValueObjectSP weakcount_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_weak_owners_")} )); |
| |
| if (!ptr_sp) |
| return false; |
| |
| if (ptr_sp->GetValueAsUnsigned(0) == 0) |
| { |
| stream.Printf("nullptr"); |
| return true; |
| } |
| else |
| { |
| bool print_pointee = false; |
| Error error; |
| ValueObjectSP pointee_sp = ptr_sp->Dereference(error); |
| if (pointee_sp && error.Success()) |
| { |
| if (pointee_sp->DumpPrintableRepresentation(stream, |
| ValueObject::eValueObjectRepresentationStyleSummary, |
| lldb::eFormatInvalid, |
| ValueObject::ePrintableRepresentationSpecialCasesDisable, |
| false)) |
| print_pointee = true; |
| } |
| if (!print_pointee) |
| stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0)); |
| } |
| |
| if (count_sp) |
| stream.Printf(" strong=%" PRIu64, 1+count_sp->GetValueAsUnsigned(0)); |
| |
| if (weakcount_sp) |
| stream.Printf(" weak=%" PRIu64, 1+weakcount_sp->GetValueAsUnsigned(0)); |
| |
| return true; |
| } |
| |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::LibcxxVectorBoolSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp), |
| m_bool_type(), |
| m_exe_ctx_ref(), |
| m_count(0), |
| m_base_data_address(0), |
| m_children() |
| { |
| if (valobj_sp) |
| { |
| Update(); |
| m_bool_type = valobj_sp->GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeBool); |
| } |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::CalculateNumChildren () |
| { |
| return m_count; |
| } |
| |
| lldb::ValueObjectSP |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetChildAtIndex (size_t idx) |
| { |
| auto iter = m_children.find(idx), |
| end = m_children.end(); |
| if (iter != end) |
| return iter->second; |
| if (idx >= m_count) |
| return ValueObjectSP(); |
| if (m_base_data_address == 0 || m_count == 0) |
| return ValueObjectSP(); |
| if (!m_bool_type) |
| return ValueObjectSP(); |
| size_t byte_idx = (idx >> 3); // divide by 8 to get byte index |
| size_t bit_index = (idx & 7); // efficient idx % 8 for bit index |
| lldb::addr_t byte_location = m_base_data_address + byte_idx; |
| ProcessSP process_sp(m_exe_ctx_ref.GetProcessSP()); |
| if (!process_sp) |
| return ValueObjectSP(); |
| uint8_t byte = 0; |
| uint8_t mask = 0; |
| Error err; |
| size_t bytes_read = process_sp->ReadMemory(byte_location, &byte, 1, err); |
| if (err.Fail() || bytes_read == 0) |
| return ValueObjectSP(); |
| switch (bit_index) |
| { |
| case 0: |
| mask = 1; break; |
| case 1: |
| mask = 2; break; |
| case 2: |
| mask = 4; break; |
| case 3: |
| mask = 8; break; |
| case 4: |
| mask = 16; break; |
| case 5: |
| mask = 32; break; |
| case 6: |
| mask = 64; break; |
| case 7: |
| mask = 128; break; |
| default: |
| return ValueObjectSP(); |
| } |
| bool bit_set = ((byte & mask) != 0); |
| DataBufferSP buffer_sp(new DataBufferHeap(m_bool_type.GetByteSize(nullptr), 0)); |
| if (bit_set && buffer_sp && buffer_sp->GetBytes()) |
| *(buffer_sp->GetBytes()) = 1; // regardless of endianness, anything non-zero is true |
| StreamString name; name.Printf("[%" PRIu64 "]", (uint64_t)idx); |
| ValueObjectSP retval_sp(CreateValueObjectFromData(name.GetData(), DataExtractor(buffer_sp, process_sp->GetByteOrder(), process_sp->GetAddressByteSize()), m_exe_ctx_ref, m_bool_type)); |
| if (retval_sp) |
| m_children[idx] = retval_sp; |
| return retval_sp; |
| } |
| |
| /*(std::__1::vector<std::__1::allocator<bool> >) vBool = { |
| __begin_ = 0x00000001001000e0 |
| __size_ = 56 |
| __cap_alloc_ = { |
| std::__1::__libcpp_compressed_pair_imp<unsigned long, std::__1::allocator<unsigned long> > = { |
| __first_ = 1 |
| } |
| } |
| }*/ |
| |
| bool |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::Update() |
| { |
| m_children.clear(); |
| ValueObjectSP valobj_sp = m_backend.GetSP(); |
| if (!valobj_sp) |
| return false; |
| m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); |
| ValueObjectSP size_sp(valobj_sp->GetChildMemberWithName(ConstString("__size_"), true)); |
| if (!size_sp) |
| return false; |
| m_count = size_sp->GetValueAsUnsigned(0); |
| if (!m_count) |
| return true; |
| ValueObjectSP begin_sp(valobj_sp->GetChildMemberWithName(ConstString("__begin_"), true)); |
| if (!begin_sp) |
| { |
| m_count = 0; |
| return false; |
| } |
| m_base_data_address = begin_sp->GetValueAsUnsigned(0); |
| if (!m_base_data_address) |
| { |
| m_count = 0; |
| return false; |
| } |
| return false; |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::MightHaveChildren () |
| { |
| return true; |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) |
| { |
| if (!m_count || !m_base_data_address) |
| return UINT32_MAX; |
| const char* item_name = name.GetCString(); |
| uint32_t idx = ExtractIndexFromString(item_name); |
| if (idx < UINT32_MAX && idx >= CalculateNumChildren()) |
| return UINT32_MAX; |
| return idx; |
| } |
| |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::~LibcxxVectorBoolSyntheticFrontEnd() = default; |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| return (valobj_sp ? new LibcxxVectorBoolSyntheticFrontEnd(valobj_sp) : nullptr); |
| } |
| |
| /* |
| (lldb) fr var ibeg --raw --ptr-depth 1 |
| (std::__1::__map_iterator<std::__1::__tree_iterator<std::__1::pair<int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, std::__1::__tree_node<std::__1::pair<int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, void *> *, long> >) ibeg = { |
| __i_ = { |
| __ptr_ = 0x0000000100103870 { |
| std::__1::__tree_node_base<void *> = { |
| std::__1::__tree_end_node<std::__1::__tree_node_base<void *> *> = { |
| __left_ = 0x0000000000000000 |
| } |
| __right_ = 0x0000000000000000 |
| __parent_ = 0x00000001001038b0 |
| __is_black_ = true |
| } |
| __value_ = { |
| first = 0 |
| second = { std::string } |
| */ |
| |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::LibCxxMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp), |
| m_pair_ptr() |
| { |
| if (valobj_sp) |
| Update(); |
| } |
| |
| bool |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::Update() |
| { |
| ValueObjectSP valobj_sp = m_backend.GetSP(); |
| if (!valobj_sp) |
| return false; |
| |
| TargetSP target_sp(valobj_sp->GetTargetSP()); |
| |
| if (!target_sp) |
| return false; |
| |
| if (!valobj_sp) |
| return false; |
| |
| // this must be a ValueObject* because it is a child of the ValueObject we are producing children for |
| // it if were a ValueObjectSP, we would end up with a loop (iterator -> synthetic -> child -> parent == iterator) |
| // and that would in turn leak memory by never allowing the ValueObjects to die and free their memory |
| m_pair_ptr = valobj_sp->GetValueForExpressionPath(".__i_.__ptr_->__value_", |
| nullptr, |
| nullptr, |
| nullptr, |
| ValueObject::GetValueForExpressionPathOptions().DontCheckDotVsArrowSyntax().SetSyntheticChildrenTraversal(ValueObject::GetValueForExpressionPathOptions::SyntheticChildrenTraversal::None), |
| nullptr).get(); |
| |
| return false; |
| } |
| |
| size_t |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::CalculateNumChildren () |
| { |
| return 2; |
| } |
| |
| lldb::ValueObjectSP |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx) |
| { |
| if (!m_pair_ptr) |
| return lldb::ValueObjectSP(); |
| return m_pair_ptr->GetChildAtIndex(idx, true); |
| } |
| |
| bool |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::MightHaveChildren () |
| { |
| return true; |
| } |
| |
| size_t |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) |
| { |
| if (name == ConstString("first")) |
| return 0; |
| if (name == ConstString("second")) |
| return 1; |
| return UINT32_MAX; |
| } |
| |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::~LibCxxMapIteratorSyntheticFrontEnd () |
| { |
| // this will be deleted when its parent dies (since it's a child object) |
| //delete m_pair_ptr; |
| } |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| return (valobj_sp ? new LibCxxMapIteratorSyntheticFrontEnd(valobj_sp) : nullptr); |
| } |
| |
| /* |
| (lldb) fr var ibeg --raw --ptr-depth 1 -T |
| (std::__1::__wrap_iter<int *>) ibeg = { |
| (std::__1::__wrap_iter<int *>::iterator_type) __i = 0x00000001001037a0 { |
| (int) *__i = 1 |
| } |
| } |
| */ |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| static ConstString g_item_name; |
| if (!g_item_name) |
| g_item_name.SetCString("__i"); |
| return (valobj_sp ? new VectorIteratorSyntheticFrontEnd(valobj_sp, g_item_name) : nullptr); |
| } |
| |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::LibcxxSharedPtrSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp), |
| m_cntrl(nullptr), |
| m_count_sp(), |
| m_weak_count_sp(), |
| m_ptr_size(0), |
| m_byte_order(lldb::eByteOrderInvalid) |
| { |
| if (valobj_sp) |
| Update(); |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::CalculateNumChildren () |
| { |
| return (m_cntrl ? 1 : 0); |
| } |
| |
| lldb::ValueObjectSP |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetChildAtIndex (size_t idx) |
| { |
| if (!m_cntrl) |
| return lldb::ValueObjectSP(); |
| |
| ValueObjectSP valobj_sp = m_backend.GetSP(); |
| if (!valobj_sp) |
| return lldb::ValueObjectSP(); |
| |
| if (idx == 0) |
| return valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true); |
| |
| if (idx > 2) |
| return lldb::ValueObjectSP(); |
| |
| if (idx == 1) |
| { |
| if (!m_count_sp) |
| { |
| ValueObjectSP shared_owners_sp(m_cntrl->GetChildMemberWithName(ConstString("__shared_owners_"),true)); |
| if (!shared_owners_sp) |
| return lldb::ValueObjectSP(); |
| uint64_t count = 1 + shared_owners_sp->GetValueAsUnsigned(0); |
| DataExtractor data(&count, 8, m_byte_order, m_ptr_size); |
| m_count_sp = CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_owners_sp->GetCompilerType()); |
| } |
| return m_count_sp; |
| } |
| else /* if (idx == 2) */ |
| { |
| if (!m_weak_count_sp) |
| { |
| ValueObjectSP shared_weak_owners_sp(m_cntrl->GetChildMemberWithName(ConstString("__shared_weak_owners_"),true)); |
| if (!shared_weak_owners_sp) |
| return lldb::ValueObjectSP(); |
| uint64_t count = 1 + shared_weak_owners_sp->GetValueAsUnsigned(0); |
| DataExtractor data(&count, 8, m_byte_order, m_ptr_size); |
| m_weak_count_sp = CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_weak_owners_sp->GetCompilerType()); |
| } |
| return m_weak_count_sp; |
| } |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::Update() |
| { |
| m_count_sp.reset(); |
| m_weak_count_sp.reset(); |
| m_cntrl = nullptr; |
| |
| ValueObjectSP valobj_sp = m_backend.GetSP(); |
| if (!valobj_sp) |
| return false; |
| |
| TargetSP target_sp(valobj_sp->GetTargetSP()); |
| if (!target_sp) |
| return false; |
| |
| m_byte_order = target_sp->GetArchitecture().GetByteOrder(); |
| m_ptr_size = target_sp->GetArchitecture().GetAddressByteSize(); |
| |
| lldb::ValueObjectSP cntrl_sp(valobj_sp->GetChildMemberWithName(ConstString("__cntrl_"),true)); |
| |
| m_cntrl = cntrl_sp.get(); // need to store the raw pointer to avoid a circular dependency |
| return false; |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::MightHaveChildren () |
| { |
| return true; |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) |
| { |
| if (name == ConstString("__ptr_")) |
| return 0; |
| if (name == ConstString("count")) |
| return 1; |
| if (name == ConstString("weak_count")) |
| return 2; |
| return UINT32_MAX; |
| } |
| |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::~LibcxxSharedPtrSyntheticFrontEnd() = default; |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| return (valobj_sp ? new LibcxxSharedPtrSyntheticFrontEnd(valobj_sp) : nullptr); |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxContainerSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) |
| { |
| if (valobj.IsPointerType()) |
| { |
| uint64_t value = valobj.GetValueAsUnsigned(0); |
| if (!value) |
| return false; |
| stream.Printf("0x%016" PRIx64 " ", value); |
| } |
| return FormatEntity::FormatStringRef("size=${svar%#}", stream, nullptr, nullptr, nullptr, &valobj, false, false); |
| } |
| |
| // the field layout in a libc++ string (cap, side, data or data, size, cap) |
| enum LibcxxStringLayoutMode |
| { |
| eLibcxxStringLayoutModeCSD = 0, |
| eLibcxxStringLayoutModeDSC = 1, |
| eLibcxxStringLayoutModeInvalid = 0xffff |
| }; |
| |
| // this function abstracts away the layout and mode details of a libc++ string |
| // and returns the address of the data and the size ready for callers to consume |
| static bool |
| ExtractLibcxxStringInfo (ValueObject& valobj, |
| ValueObjectSP &location_sp, |
| uint64_t& size) |
| { |
| ValueObjectSP D(valobj.GetChildAtIndexPath({0,0,0,0})); |
| if (!D) |
| return false; |
| |
| ValueObjectSP layout_decider(D->GetChildAtIndexPath({0,0})); |
| |
| // this child should exist |
| if (!layout_decider) |
| return false; |
| |
| ConstString g_data_name("__data_"); |
| ConstString g_size_name("__size_"); |
| bool short_mode = false; // this means the string is in short-mode and the data is stored inline |
| LibcxxStringLayoutMode layout = (layout_decider->GetName() == g_data_name) ? eLibcxxStringLayoutModeDSC : eLibcxxStringLayoutModeCSD; |
| uint64_t size_mode_value = 0; |
| |
| if (layout == eLibcxxStringLayoutModeDSC) |
| { |
| ValueObjectSP size_mode(D->GetChildAtIndexPath({1,1,0})); |
| if (!size_mode) |
| return false; |
| |
| if (size_mode->GetName() != g_size_name) |
| { |
| // we are hitting the padding structure, move along |
| size_mode = D->GetChildAtIndexPath({1,1,1}); |
| if (!size_mode) |
| return false; |
| } |
| |
| size_mode_value = (size_mode->GetValueAsUnsigned(0)); |
| short_mode = ((size_mode_value & 0x80) == 0); |
| } |
| else |
| { |
| ValueObjectSP size_mode(D->GetChildAtIndexPath({1,0,0})); |
| if (!size_mode) |
| return false; |
| |
| size_mode_value = (size_mode->GetValueAsUnsigned(0)); |
| short_mode = ((size_mode_value & 1) == 0); |
| } |
| |
| if (short_mode) |
| { |
| ValueObjectSP s(D->GetChildAtIndex(1, true)); |
| if (!s) |
| return false; |
| location_sp = s->GetChildAtIndex((layout == eLibcxxStringLayoutModeDSC) ? 0 : 1, true); |
| size = (layout == eLibcxxStringLayoutModeDSC) ? size_mode_value : ((size_mode_value >> 1) % 256); |
| return (location_sp.get() != nullptr); |
| } |
| else |
| { |
| ValueObjectSP l(D->GetChildAtIndex(0, true)); |
| if (!l) |
| return false; |
| // we can use the layout_decider object as the data pointer |
| location_sp = (layout == eLibcxxStringLayoutModeDSC) ? layout_decider : l->GetChildAtIndex(2, true); |
| ValueObjectSP size_vo(l->GetChildAtIndex(1, true)); |
| if (!size_vo || !location_sp) |
| return false; |
| size = size_vo->GetValueAsUnsigned(0); |
| return true; |
| } |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxWStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& summary_options) |
| { |
| uint64_t size = 0; |
| ValueObjectSP location_sp; |
| if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) |
| return false; |
| if (size == 0) |
| { |
| stream.Printf("L\"\""); |
| return true; |
| } |
| if (!location_sp) |
| return false; |
| |
| DataExtractor extractor; |
| |
| StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); |
| |
| if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) |
| { |
| const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); |
| if (size > max_size) |
| { |
| size = max_size; |
| options.SetIsTruncated(true); |
| } |
| } |
| location_sp->GetPointeeData(extractor, 0, size); |
| |
| // std::wstring::size() is measured in 'characters', not bytes |
| auto wchar_t_size = valobj.GetTargetSP()->GetScratchClangASTContext()->GetBasicType(lldb::eBasicTypeWChar).GetByteSize(nullptr); |
| |
| options.SetData(extractor); |
| options.SetStream(&stream); |
| options.SetPrefixToken("L"); |
| options.SetQuote('"'); |
| options.SetSourceSize(size); |
| options.SetBinaryZeroIsTerminator(false); |
| |
| switch (wchar_t_size) |
| { |
| case 1: |
| StringPrinter::ReadBufferAndDumpToStream<lldb_private::formatters::StringPrinter::StringElementType::UTF8>(options); |
| break; |
| |
| case 2: |
| lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream<lldb_private::formatters::StringPrinter::StringElementType::UTF16>(options); |
| break; |
| |
| case 4: |
| lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream<lldb_private::formatters::StringPrinter::StringElementType::UTF32>(options); |
| break; |
| |
| default: |
| stream.Printf("size for wchar_t is not valid"); |
| return true; |
| } |
| |
| return true; |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& summary_options) |
| { |
| uint64_t size = 0; |
| ValueObjectSP location_sp; |
| |
| if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) |
| return false; |
| |
| if (size == 0) |
| { |
| stream.Printf("\"\""); |
| return true; |
| } |
| |
| if (!location_sp) |
| return false; |
| |
| StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); |
| |
| DataExtractor extractor; |
| if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) |
| { |
| const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); |
| if (size > max_size) |
| { |
| size = max_size; |
| options.SetIsTruncated(true); |
| } |
| } |
| location_sp->GetPointeeData(extractor, 0, size); |
| |
| options.SetData(extractor); |
| options.SetStream(&stream); |
| options.SetPrefixToken(nullptr); |
| options.SetQuote('"'); |
| options.SetSourceSize(size); |
| options.SetBinaryZeroIsTerminator(false); |
| StringPrinter::ReadBufferAndDumpToStream<StringPrinter::StringElementType::ASCII>(options); |
| |
| return true; |
| } |
| |
| class LibcxxFunctionFrontEnd : public SyntheticValueProviderFrontEnd |
| { |
| public: |
| LibcxxFunctionFrontEnd (ValueObject &backend) : |
| SyntheticValueProviderFrontEnd(backend) |
| {} |
| |
| lldb::ValueObjectSP |
| GetSyntheticValue() override |
| { |
| static ConstString g___f_("__f_"); |
| return m_backend.GetChildMemberWithName(g___f_, true); |
| } |
| }; |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibcxxFunctionFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| if (valobj_sp) |
| return new LibcxxFunctionFrontEnd(*valobj_sp); |
| return nullptr; |
| } |