diff options
Diffstat (limited to 'lldb/source/Plugins/Language/CPlusPlus')
4 files changed, 125 insertions, 0 deletions
diff --git a/lldb/source/Plugins/Language/CPlusPlus/CMakeLists.txt b/lldb/source/Plugins/Language/CPlusPlus/CMakeLists.txt index fb4fa5ced18..180440a244a 100644 --- a/lldb/source/Plugins/Language/CPlusPlus/CMakeLists.txt +++ b/lldb/source/Plugins/Language/CPlusPlus/CMakeLists.txt @@ -5,6 +5,7 @@ add_lldb_library(lldbPluginCPlusPlusLanguage PLUGIN CxxStringTypes.cpp LibCxx.cpp LibCxxAtomic.cpp + LibCxxBitset.cpp LibCxxInitializerList.cpp LibCxxList.cpp LibCxxMap.cpp diff --git a/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp b/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp index cc31832b558..51ed88065c8 100644 --- a/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp +++ b/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp @@ -422,6 +422,12 @@ static void LoadLibCxxFormatters(lldb::TypeCategoryImplSP cpp_category_sp) { AddCXXSynthetic( cpp_category_sp, + lldb_private::formatters::LibcxxBitsetSyntheticFrontEndCreator, + "libc++ std::bitset synthetic children", + ConstString("^std::__(ndk)?1::bitset<.+>(( )?&)?$"), stl_synth_flags, + true); + AddCXXSynthetic( + cpp_category_sp, lldb_private::formatters::LibcxxStdVectorSyntheticFrontEndCreator, "libc++ std::vector synthetic children", ConstString("^std::__(ndk)?1::vector<.+>(( )?&)?$"), stl_synth_flags, @@ -511,6 +517,11 @@ static void LoadLibCxxFormatters(lldb::TypeCategoryImplSP cpp_category_sp) { stl_summary_flags.SetSkipPointers(false); AddCXXSummary(cpp_category_sp, lldb_private::formatters::LibcxxContainerSummaryProvider, + "libc++ std::bitset summary provider", + ConstString("^std::__(ndk)?1::bitset<.+>(( )?&)?$"), + stl_summary_flags, true); + AddCXXSummary(cpp_category_sp, + lldb_private::formatters::LibcxxContainerSummaryProvider, "libc++ std::vector summary provider", ConstString("^std::__(ndk)?1::vector<.+>(( )?&)?$"), stl_summary_flags, true); diff --git a/lldb/source/Plugins/Language/CPlusPlus/LibCxx.h b/lldb/source/Plugins/Language/CPlusPlus/LibCxx.h index 096f3543f70..3f6e0d6e14d 100644 --- a/lldb/source/Plugins/Language/CPlusPlus/LibCxx.h +++ b/lldb/source/Plugins/Language/CPlusPlus/LibCxx.h @@ -93,6 +93,10 @@ private: }; SyntheticChildrenFrontEnd * +LibcxxBitsetSyntheticFrontEndCreator(CXXSyntheticChildren *, + lldb::ValueObjectSP); + +SyntheticChildrenFrontEnd * LibcxxSharedPtrSyntheticFrontEndCreator(CXXSyntheticChildren *, lldb::ValueObjectSP); diff --git a/lldb/source/Plugins/Language/CPlusPlus/LibCxxBitset.cpp b/lldb/source/Plugins/Language/CPlusPlus/LibCxxBitset.cpp new file mode 100644 index 00000000000..282a8de9cbb --- /dev/null +++ b/lldb/source/Plugins/Language/CPlusPlus/LibCxxBitset.cpp @@ -0,0 +1,109 @@ +//===-- LibCxxBitset.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" +#include "lldb/DataFormatters/FormattersHelpers.h" +#include "lldb/Symbol/ClangASTContext.h" +#include "lldb/Target/Target.h" + +using namespace lldb; +using namespace lldb_private; + +namespace { + +class BitsetFrontEnd : public SyntheticChildrenFrontEnd { +public: + BitsetFrontEnd(ValueObject &valobj); + + size_t GetIndexOfChildWithName(const ConstString &name) override { + return formatters::ExtractIndexFromString(name.GetCString()); + } + + bool MightHaveChildren() override { return true; } + bool Update() override; + size_t CalculateNumChildren() override { return m_elements.size(); } + ValueObjectSP GetChildAtIndex(size_t idx) override; + +private: + std::vector<ValueObjectSP> m_elements; + ValueObjectSP m_first; + CompilerType m_bool_type; + ByteOrder m_byte_order = eByteOrderInvalid; + uint8_t m_byte_size = 0; +}; +} // namespace + +BitsetFrontEnd::BitsetFrontEnd(ValueObject &valobj) + : SyntheticChildrenFrontEnd(valobj) { + m_bool_type = valobj.GetCompilerType().GetBasicTypeFromAST(eBasicTypeBool); + if (auto target_sp = m_backend.GetTargetSP()) { + m_byte_order = target_sp->GetArchitecture().GetByteOrder(); + m_byte_size = target_sp->GetArchitecture().GetAddressByteSize(); + Update(); + } +} + +bool BitsetFrontEnd::Update() { + m_elements.clear(); + m_first.reset(); + + TargetSP target_sp = m_backend.GetTargetSP(); + if (!target_sp) + return false; + size_t capping_size = target_sp->GetMaximumNumberOfChildrenToDisplay(); + + size_t size = 0; + auto value_and_type = + m_backend.GetCompilerType().GetIntegralTemplateArgument(0); + if (value_and_type.second) + size = value_and_type.first.getLimitedValue(capping_size); + + m_elements.assign(size, ValueObjectSP()); + + m_first = m_backend.GetChildMemberWithName(ConstString("__first_"), true); + return false; +} + +ValueObjectSP BitsetFrontEnd::GetChildAtIndex(size_t idx) { + if (idx >= m_elements.size() || !m_first) + return ValueObjectSP(); + + if (m_elements[idx]) + return m_elements[idx]; + + ExecutionContext ctx = m_backend.GetExecutionContextRef().Lock(false); + CompilerType type; + ValueObjectSP chunk; + // For small bitsets __first_ is not an array, but a plain size_t. + if (m_first->GetCompilerType().IsArrayType(&type, nullptr, nullptr)) + chunk = m_first->GetChildAtIndex( + idx / type.GetBitSize(ctx.GetBestExecutionContextScope()), true); + else { + type = m_first->GetCompilerType(); + chunk = m_first; + } + if (!type || !chunk) + return ValueObjectSP(); + + size_t chunk_idx = idx % type.GetBitSize(ctx.GetBestExecutionContextScope()); + uint8_t value = !!(chunk->GetValueAsUnsigned(0) & (uint64_t(1) << chunk_idx)); + DataExtractor data(&value, sizeof(value), m_byte_order, m_byte_size); + + m_elements[idx] = CreateValueObjectFromData(llvm::formatv("[{0}]", idx).str(), + data, ctx, m_bool_type); + + return m_elements[idx]; +} + +SyntheticChildrenFrontEnd *formatters::LibcxxBitsetSyntheticFrontEndCreator( + CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { + if (valobj_sp) + return new BitsetFrontEnd(*valobj_sp); + return nullptr; +} |
