97206d5727
This renames the LLDB error class to Status, as discussed on the lldb-dev mailing list. A change of this magnitude cannot easily be done without find and replace, but that has potential to catch unwanted occurrences of common strings such as "Error". Every effort was made to find all the obvious things such as the word "Error" appearing in a string, etc, but it's possible there are still some lingering occurences left around. Hopefully nothing too serious. llvm-svn: 302872
151 lines
4.1 KiB
C++
151 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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ValueObjectSP ptr_obj = tuple_frontend->GetChildAtIndex(0);
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if (ptr_obj)
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m_ptr_obj = ptr_obj->Clone(ConstString("pointer"));
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ValueObjectSP del_obj = tuple_frontend->GetChildAtIndex(1);
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if (del_obj)
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m_del_obj = del_obj->Clone(ConstString("deleter"));
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if (m_ptr_obj) {
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Status error;
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ValueObjectSP obj_obj = m_ptr_obj->Dereference(error);
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if (error.Success()) {
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m_obj_obj = obj_obj->Clone(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_ptr_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_obj_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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return 1;
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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("ptr") || name == ConstString("pointer"))
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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("obj") || name == ConstString("object") ||
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name == ConstString("$$dereference$$"))
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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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