0e4c482124
My apologies for the large patch. With the exception of ConstString.h itself it was entirely produced by sed. ConstString has exactly one const char * data member, so passing a ConstString by reference is not any more efficient than copying it by value. In both cases a single pointer is passed. But passing it by value makes it harder to accidentally return the address of a local object. (This fixes rdar://problem/48640859 for the Apple folks) Differential Revision: https://reviews.llvm.org/D59030 llvm-svn: 355553
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
//===-- LibCxxQueue.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 "LibCxx.h"
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#include "lldb/DataFormatters/FormattersHelpers.h"
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using namespace lldb;
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using namespace lldb_private;
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namespace {
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class QueueFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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QueueFrontEnd(ValueObject &valobj) : SyntheticChildrenFrontEnd(valobj) {
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Update();
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}
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size_t GetIndexOfChildWithName(ConstString name) override {
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return m_container_sp ? m_container_sp->GetIndexOfChildWithName(name)
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: UINT32_MAX;
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}
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bool MightHaveChildren() override { return true; }
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bool Update() override;
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size_t CalculateNumChildren() override {
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return m_container_sp ? m_container_sp->GetNumChildren() : 0;
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}
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ValueObjectSP GetChildAtIndex(size_t idx) override {
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return m_container_sp ? m_container_sp->GetChildAtIndex(idx, true)
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: nullptr;
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}
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private:
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ValueObjectSP m_container_sp;
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};
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} // namespace
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bool QueueFrontEnd::Update() {
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m_container_sp.reset();
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ValueObjectSP c_sp = m_backend.GetChildMemberWithName(ConstString("c"), true);
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if (!c_sp)
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return false;
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m_container_sp = c_sp->GetSyntheticValue();
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return false;
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}
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SyntheticChildrenFrontEnd *
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formatters::LibcxxQueueFrontEndCreator(CXXSyntheticChildren *,
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lldb::ValueObjectSP valobj_sp) {
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if (valobj_sp)
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return new QueueFrontEnd(*valobj_sp);
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return nullptr;
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}
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