You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
3.5 KiB
112 lines
3.5 KiB
//===-- LibStdcppTuple.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 "LibStdcpp.h"
|
|
|
|
#include "lldb/Core/ValueObject.h"
|
|
#include "lldb/DataFormatters/FormattersHelpers.h"
|
|
#include "lldb/DataFormatters/TypeSynthetic.h"
|
|
#include "lldb/Utility/ConstString.h"
|
|
|
|
#include <memory>
|
|
#include <vector>
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
using namespace lldb_private::formatters;
|
|
|
|
namespace {
|
|
|
|
class LibStdcppTupleSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
|
|
public:
|
|
explicit LibStdcppTupleSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
|
|
|
|
size_t CalculateNumChildren() override;
|
|
|
|
lldb::ValueObjectSP GetChildAtIndex(size_t idx) override;
|
|
|
|
bool Update() override;
|
|
|
|
bool MightHaveChildren() override;
|
|
|
|
size_t GetIndexOfChildWithName(ConstString name) 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_members;
|
|
};
|
|
|
|
} // end of anonymous namespace
|
|
|
|
LibStdcppTupleSyntheticFrontEnd::LibStdcppTupleSyntheticFrontEnd(
|
|
lldb::ValueObjectSP valobj_sp)
|
|
: SyntheticChildrenFrontEnd(*valobj_sp) {
|
|
Update();
|
|
}
|
|
|
|
bool LibStdcppTupleSyntheticFrontEnd::Update() {
|
|
m_members.clear();
|
|
|
|
ValueObjectSP valobj_backend_sp = m_backend.GetSP();
|
|
if (!valobj_backend_sp)
|
|
return false;
|
|
|
|
ValueObjectSP next_child_sp = valobj_backend_sp->GetNonSyntheticValue();
|
|
while (next_child_sp != nullptr) {
|
|
ValueObjectSP current_child = next_child_sp;
|
|
next_child_sp = nullptr;
|
|
|
|
size_t child_count = current_child->GetNumChildren();
|
|
for (size_t i = 0; i < child_count; ++i) {
|
|
ValueObjectSP child_sp = current_child->GetChildAtIndex(i, true);
|
|
llvm::StringRef name_str = child_sp->GetName().GetStringRef();
|
|
if (name_str.startswith("std::_Tuple_impl<")) {
|
|
next_child_sp = child_sp;
|
|
} else if (name_str.startswith("std::_Head_base<")) {
|
|
ValueObjectSP value_sp =
|
|
child_sp->GetChildMemberWithName(ConstString("_M_head_impl"), true);
|
|
if (value_sp) {
|
|
StreamString name;
|
|
name.Printf("[%zd]", m_members.size());
|
|
m_members.push_back(value_sp->Clone(ConstString(name.GetString())).get());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool LibStdcppTupleSyntheticFrontEnd::MightHaveChildren() { return true; }
|
|
|
|
lldb::ValueObjectSP
|
|
LibStdcppTupleSyntheticFrontEnd::GetChildAtIndex(size_t idx) {
|
|
if (idx < m_members.size() && m_members[idx])
|
|
return m_members[idx]->GetSP();
|
|
return lldb::ValueObjectSP();
|
|
}
|
|
|
|
size_t LibStdcppTupleSyntheticFrontEnd::CalculateNumChildren() {
|
|
return m_members.size();
|
|
}
|
|
|
|
size_t LibStdcppTupleSyntheticFrontEnd::GetIndexOfChildWithName(
|
|
ConstString name) {
|
|
return ExtractIndexFromString(name.GetCString());
|
|
}
|
|
|
|
SyntheticChildrenFrontEnd *
|
|
lldb_private::formatters::LibStdcppTupleSyntheticFrontEndCreator(
|
|
CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
|
|
return (valobj_sp ? new LibStdcppTupleSyntheticFrontEnd(valobj_sp) : nullptr);
|
|
}
|