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usr / src / contrib / llvm-project / lldb / source / Plugins / Language / CPlusPlus /

📁 ..
📄 BlockPointer.cpp(7.04 KB)
📄 BlockPointer.h(963 B)
📄 CPlusPlusLanguage.cpp(45.02 KB)
📄 CPlusPlusLanguage.h(4.25 KB)
📄 CPlusPlusNameParser.cpp(19.55 KB)
📄 CPlusPlusNameParser.h(5.18 KB)
📄 CxxStringTypes.cpp(8.31 KB)
📄 CxxStringTypes.h(1.86 KB)
📄 LibCxx.cpp(26.28 KB)
📄 LibCxx.h(6.14 KB)
📄 LibCxxAtomic.cpp(4.36 KB)
📄 LibCxxAtomic.h(1.15 KB)
📄 LibCxxBitset.cpp(4.08 KB)
📄 LibCxxInitializerList.cpp(3.8 KB)
📄 LibCxxList.cpp(12.13 KB)
📄 LibCxxMap.cpp(13.8 KB)
📄 LibCxxOptional.cpp(2.54 KB)
📄 LibCxxQueue.cpp(2.08 KB)
📄 LibCxxTuple.cpp(2.88 KB)
📄 LibCxxUnorderedMap.cpp(7.59 KB)
📄 LibCxxVariant.cpp(6.64 KB)
📄 LibCxxVariant.h(1.1 KB)
📄 LibCxxVector.cpp(8.98 KB)
📄 LibStdcpp.cpp(12.73 KB)
📄 LibStdcpp.h(2.22 KB)
📄 LibStdcppTuple.cpp(3.49 KB)
📄 LibStdcppUniquePointer.cpp(4.97 KB)
📄 MSVCUndecoratedNameParser.cpp(2.64 KB)
📄 MSVCUndecoratedNameParser.h(1.59 KB)

Editing: LibCxxTuple.cpp

//===-- LibCxxTuple.cpp ---------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "LibCxx.h"
#include "lldb/DataFormatters/FormattersHelpers.h"

using namespace lldb;
using namespace lldb_private;

namespace {

class TupleFrontEnd: public SyntheticChildrenFrontEnd {
public:
  TupleFrontEnd(ValueObject &valobj) : SyntheticChildrenFrontEnd(valobj) {
    Update();
  }

size_t GetIndexOfChildWithName(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:
  // The lifetime of a ValueObject and all its derivative ValueObjects
  // (children, clones, etc.) is managed by a ClusterManager. These
  // objects are only destroyed when every shared pointer to any of them
  // is destroyed, so we must not store a shared pointer to any ValueObject
  // derived from our backend ValueObject (since we're in the same cluster).
  std::vector<ValueObject*> m_elements;
  ValueObject* m_base = nullptr;
};
}

bool TupleFrontEnd::Update() {
  m_elements.clear();
  m_base = nullptr;

ValueObjectSP base_sp;
  base_sp = m_backend.GetChildMemberWithName(ConstString("__base_"), true);
  if (!base_sp) {
    // Pre r304382 name of the base element.
    base_sp = m_backend.GetChildMemberWithName(ConstString("base_"), true);
  }
  if (!base_sp)
    return false;
  m_base = base_sp.get();
  m_elements.assign(base_sp->GetCompilerType().GetNumDirectBaseClasses(),
                    nullptr);
  return false;
}

ValueObjectSP TupleFrontEnd::GetChildAtIndex(size_t idx) {
  if (idx >= m_elements.size())
    return ValueObjectSP();
  if (!m_base)
    return ValueObjectSP();
  if (m_elements[idx])
    return m_elements[idx]->GetSP();

CompilerType holder_type =
      m_base->GetCompilerType().GetDirectBaseClassAtIndex(idx, nullptr);
  if (!holder_type)
    return ValueObjectSP();
  ValueObjectSP holder_sp = m_base->GetChildAtIndex(idx, true);
  if (!holder_sp)
    return ValueObjectSP();

ValueObjectSP elem_sp = holder_sp->GetChildAtIndex(0, true);
  if (elem_sp)
    m_elements[idx] =
        elem_sp->Clone(ConstString(llvm::formatv("[{0}]", idx).str())).get();

if (m_elements[idx])
    return m_elements[idx]->GetSP();
  return ValueObjectSP();
}

SyntheticChildrenFrontEnd *
formatters::LibcxxTupleFrontEndCreator(CXXSyntheticChildren *,
                                       lldb::ValueObjectSP valobj_sp) {
  if (valobj_sp)
    return new TupleFrontEnd(*valobj_sp);
  return nullptr;
}

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Editing: LibCxxTuple.cpp

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