bf9a77305f
This moves the following classes from Core -> Utility. ConstString Error RegularExpression Stream StreamString The goal here is to get lldbUtility into a state where it has no dependendencies except on itself and LLVM, so it can be the starting point at which to start untangling LLDB's dependencies. These are all low level and very widely used classes, and previously lldbUtility had dependencies up to lldbCore in order to use these classes. So moving then down to lldbUtility makes sense from both the short term and long term perspective in solving this problem. Differential Revision: https://reviews.llvm.org/D29427 llvm-svn: 293941
152 lines
4.1 KiB
C++
152 lines
4.1 KiB
C++
//===-- LibStdcppUniquePointer.cpp ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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 LibStdcppUniquePtrSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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explicit LibStdcppUniquePtrSyntheticFrontEnd(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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bool GetSummary(Stream &stream, const TypeSummaryOptions &options);
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private:
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ValueObjectSP m_ptr_obj;
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ValueObjectSP m_obj_obj;
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ValueObjectSP m_del_obj;
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};
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} // end of anonymous namespace
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LibStdcppUniquePtrSyntheticFrontEnd::LibStdcppUniquePtrSyntheticFrontEnd(
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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 LibStdcppUniquePtrSyntheticFrontEnd::Update() {
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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 valobj_sp = valobj_backend_sp->GetNonSyntheticValue();
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if (!valobj_sp)
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return false;
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ValueObjectSP tuple_sp =
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valobj_sp->GetChildMemberWithName(ConstString("_M_t"), true);
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if (!tuple_sp)
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return false;
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std::unique_ptr<SyntheticChildrenFrontEnd> tuple_frontend(
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LibStdcppTupleSyntheticFrontEndCreator(nullptr, tuple_sp));
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m_ptr_obj = tuple_frontend->GetChildAtIndex(0);
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if (m_ptr_obj)
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m_ptr_obj->SetName(ConstString("pointer"));
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m_del_obj = tuple_frontend->GetChildAtIndex(1);
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if (m_del_obj)
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m_del_obj->SetName(ConstString("deleter"));
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if (m_ptr_obj) {
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Error error;
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m_obj_obj = m_ptr_obj->Dereference(error);
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if (error.Success()) {
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m_obj_obj->SetName(ConstString("object"));
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}
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}
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return false;
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}
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bool LibStdcppUniquePtrSyntheticFrontEnd::MightHaveChildren() { return true; }
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lldb::ValueObjectSP
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LibStdcppUniquePtrSyntheticFrontEnd::GetChildAtIndex(size_t idx) {
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if (idx == 0)
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return m_obj_obj;
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if (idx == 1)
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return m_del_obj;
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if (idx == 2)
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return m_ptr_obj;
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return lldb::ValueObjectSP();
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}
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size_t LibStdcppUniquePtrSyntheticFrontEnd::CalculateNumChildren() {
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if (m_del_obj)
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return 2;
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if (m_ptr_obj && m_ptr_obj->GetValueAsUnsigned(0) != 0)
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return 1;
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return 0;
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}
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size_t LibStdcppUniquePtrSyntheticFrontEnd::GetIndexOfChildWithName(
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const ConstString &name) {
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if (name == ConstString("obj") || name == ConstString("object"))
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return 0;
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if (name == ConstString("del") || name == ConstString("deleter"))
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return 1;
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if (name == ConstString("ptr") || name == ConstString("pointer"))
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return 2;
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return UINT32_MAX;
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}
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bool LibStdcppUniquePtrSyntheticFrontEnd::GetSummary(
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Stream &stream, const TypeSummaryOptions &options) {
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if (!m_ptr_obj)
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return false;
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bool success;
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uint64_t ptr_value = m_ptr_obj->GetValueAsUnsigned(0, &success);
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if (!success)
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return false;
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if (ptr_value == 0)
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stream.Printf("nullptr");
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else
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stream.Printf("0x%" PRIx64, ptr_value);
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return true;
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}
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SyntheticChildrenFrontEnd *
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lldb_private::formatters::LibStdcppUniquePtrSyntheticFrontEndCreator(
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CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
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return (valobj_sp ? new LibStdcppUniquePtrSyntheticFrontEnd(valobj_sp)
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: nullptr);
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}
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bool lldb_private::formatters::LibStdcppUniquePointerSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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LibStdcppUniquePtrSyntheticFrontEnd formatter(valobj.GetSP());
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return formatter.GetSummary(stream, options);
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}
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