| //===-- LibCxxUnorderedMap.cpp -----------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/lldb-python.h" |
| |
| #include "lldb/DataFormatters/CXXFormatterFunctions.h" |
| |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/Error.h" |
| #include "lldb/Core/Stream.h" |
| #include "lldb/Core/ValueObject.h" |
| #include "lldb/Core/ValueObjectConstResult.h" |
| #include "lldb/Host/Endian.h" |
| #include "lldb/Symbol/ClangASTContext.h" |
| #include "lldb/Target/ObjCLanguageRuntime.h" |
| #include "lldb/Target/Target.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace lldb_private::formatters; |
| |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::LibcxxStdUnorderedMapSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp.get()), |
| m_tree(NULL), |
| m_num_elements(0), |
| m_next_element(nullptr), |
| m_children(), |
| m_elements_cache() |
| { |
| if (valobj_sp) |
| Update(); |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::CalculateNumChildren () |
| { |
| if (m_num_elements != UINT32_MAX) |
| return m_num_elements; |
| return 0; |
| } |
| |
| lldb::ValueObjectSP |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::GetChildAtIndex (size_t idx) |
| { |
| if (idx >= CalculateNumChildren()) |
| return lldb::ValueObjectSP(); |
| if (m_tree == NULL) |
| return lldb::ValueObjectSP(); |
| |
| auto cached = m_children.find(idx); |
| if (cached != m_children.end()) |
| return cached->second; |
| |
| while (idx >= m_elements_cache.size()) |
| { |
| if (m_next_element == nullptr) |
| return lldb::ValueObjectSP(); |
| |
| Error error; |
| ValueObjectSP node_sp = m_next_element->Dereference(error); |
| if (!node_sp || error.Fail()) |
| return lldb::ValueObjectSP(); |
| |
| ValueObjectSP value_sp = node_sp->GetChildMemberWithName(ConstString("__value_"), true); |
| ValueObjectSP hash_sp = node_sp->GetChildMemberWithName(ConstString("__hash_"), true); |
| if (!hash_sp || !value_sp) |
| return lldb::ValueObjectSP(); |
| m_elements_cache.push_back({value_sp.get(),hash_sp->GetValueAsUnsigned(0)}); |
| m_next_element = node_sp->GetChildMemberWithName(ConstString("__next_"),true).get(); |
| if (!m_next_element || m_next_element->GetValueAsUnsigned(0) == 0) |
| m_next_element = nullptr; |
| } |
| |
| std::pair<ValueObject*, uint64_t> val_hash = m_elements_cache[idx]; |
| if (!val_hash.first) |
| return lldb::ValueObjectSP(); |
| StreamString stream; |
| stream.Printf("[%" PRIu64 "]", (uint64_t)idx); |
| DataExtractor data; |
| Error error; |
| val_hash.first->GetData(data, error); |
| if (error.Fail()) |
| return lldb::ValueObjectSP(); |
| const bool thread_and_frame_only_if_stopped = true; |
| ExecutionContext exe_ctx = val_hash.first->GetExecutionContextRef().Lock(thread_and_frame_only_if_stopped); |
| return val_hash.first->CreateValueObjectFromData(stream.GetData(), |
| data, |
| exe_ctx, |
| val_hash.first->GetClangType()); |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::Update() |
| { |
| m_num_elements = UINT32_MAX; |
| m_next_element = nullptr; |
| m_elements_cache.clear(); |
| m_children.clear(); |
| ValueObjectSP table_sp = m_backend.GetChildMemberWithName(ConstString("__table_"), true); |
| if (!table_sp) |
| return false; |
| ValueObjectSP num_elements_sp = table_sp->GetChildAtNamePath({ConstString("__p2_"),ConstString("__first_")}); |
| if (!num_elements_sp) |
| return false; |
| m_num_elements = num_elements_sp->GetValueAsUnsigned(0); |
| m_tree = table_sp->GetChildAtNamePath({ConstString("__p1_"),ConstString("__first_"),ConstString("__next_")}).get(); |
| if (m_num_elements > 0) |
| m_next_element = table_sp->GetChildAtNamePath({ConstString("__p1_"),ConstString("__first_"),ConstString("__next_")}).get(); |
| return false; |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::MightHaveChildren () |
| { |
| return true; |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) |
| { |
| return ExtractIndexFromString(name.GetCString()); |
| } |
| |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::~LibcxxStdUnorderedMapSyntheticFrontEnd () |
| {} |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| if (!valobj_sp) |
| return NULL; |
| return (new LibcxxStdUnorderedMapSyntheticFrontEnd(valobj_sp)); |
| } |