2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
107 lines
3.1 KiB
C++
107 lines
3.1 KiB
C++
//===-- LibStdcppTuple.cpp --------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "LibStdcpp.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/DataFormatters/FormattersHelpers.h"
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#include "lldb/DataFormatters/TypeSynthetic.h"
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#include "lldb/Utility/ConstString.h"
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#include <memory>
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#include <vector>
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::formatters;
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namespace {
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class LibStdcppTupleSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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explicit LibStdcppTupleSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
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size_t CalculateNumChildren() override;
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lldb::ValueObjectSP GetChildAtIndex(size_t idx) override;
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bool Update() override;
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bool MightHaveChildren() override;
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size_t GetIndexOfChildWithName(const ConstString &name) override;
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private:
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std::vector<ValueObjectSP> m_members;
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};
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} // end of anonymous namespace
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LibStdcppTupleSyntheticFrontEnd::LibStdcppTupleSyntheticFrontEnd(
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lldb::ValueObjectSP valobj_sp)
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: SyntheticChildrenFrontEnd(*valobj_sp) {
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Update();
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}
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bool LibStdcppTupleSyntheticFrontEnd::Update() {
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m_members.clear();
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ValueObjectSP valobj_backend_sp = m_backend.GetSP();
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if (!valobj_backend_sp)
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return false;
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ValueObjectSP next_child_sp = valobj_backend_sp->GetNonSyntheticValue();
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while (next_child_sp != nullptr) {
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ValueObjectSP current_child = next_child_sp;
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next_child_sp = nullptr;
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size_t child_count = current_child->GetNumChildren();
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for (size_t i = 0; i < child_count; ++i) {
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ValueObjectSP child_sp = current_child->GetChildAtIndex(i, true);
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llvm::StringRef name_str = child_sp->GetName().GetStringRef();
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if (name_str.startswith("std::_Tuple_impl<")) {
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next_child_sp = child_sp;
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} else if (name_str.startswith("std::_Head_base<")) {
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ValueObjectSP value_sp =
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child_sp->GetChildMemberWithName(ConstString("_M_head_impl"), true);
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if (value_sp) {
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StreamString name;
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name.Printf("[%zd]", m_members.size());
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m_members.push_back(value_sp->Clone(ConstString(name.GetString())));
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}
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}
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}
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}
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return false;
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}
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bool LibStdcppTupleSyntheticFrontEnd::MightHaveChildren() { return true; }
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lldb::ValueObjectSP
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LibStdcppTupleSyntheticFrontEnd::GetChildAtIndex(size_t idx) {
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if (idx < m_members.size())
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return m_members[idx];
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return lldb::ValueObjectSP();
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}
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size_t LibStdcppTupleSyntheticFrontEnd::CalculateNumChildren() {
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return m_members.size();
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}
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size_t LibStdcppTupleSyntheticFrontEnd::GetIndexOfChildWithName(
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const ConstString &name) {
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return ExtractIndexFromString(name.GetCString());
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}
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SyntheticChildrenFrontEnd *
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lldb_private::formatters::LibStdcppTupleSyntheticFrontEndCreator(
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CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
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return (valobj_sp ? new LibStdcppTupleSyntheticFrontEnd(valobj_sp) : nullptr);
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}
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