LLDB  mainline
LibCxxQueue.cpp
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1 //===-- LibCxxQueue.cpp -----------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "LibCxx.h"
11 
12 using namespace lldb;
13 using namespace lldb_private;
14 
15 namespace {
16 
17 class QueueFrontEnd : public SyntheticChildrenFrontEnd {
18 public:
19  QueueFrontEnd(ValueObject &valobj) : SyntheticChildrenFrontEnd(valobj) {
20  Update();
21  }
22 
23  size_t GetIndexOfChildWithName(ConstString name) override {
24  return m_container_sp ? m_container_sp->GetIndexOfChildWithName(name)
25  : UINT32_MAX;
26  }
27 
28  bool MightHaveChildren() override { return true; }
29  bool Update() override;
30 
31  size_t CalculateNumChildren() override {
32  return m_container_sp ? m_container_sp->GetNumChildren() : 0;
33  }
34 
35  ValueObjectSP GetChildAtIndex(size_t idx) override {
36  return m_container_sp ? m_container_sp->GetChildAtIndex(idx, true)
37  : nullptr;
38  }
39 
40 private:
41  ValueObjectSP m_container_sp;
42 };
43 } // namespace
44 
45 bool QueueFrontEnd::Update() {
46  m_container_sp.reset();
47  ValueObjectSP c_sp = m_backend.GetChildMemberWithName(ConstString("c"), true);
48  if (!c_sp)
49  return false;
50  m_container_sp = c_sp->GetSyntheticValue();
51  return false;
52 }
53 
56  lldb::ValueObjectSP valobj_sp) {
57  if (valobj_sp)
58  return new QueueFrontEnd(*valobj_sp);
59  return nullptr;
60 }
Enumerations for broadcasting.
Definition: SBLaunchInfo.h:14
#define UINT32_MAX
Definition: lldb-defines.h:31
static size_t CalculateNumChildren(CompilerType container_type, CompilerType element_type, lldb_private::ExecutionContextScope *exe_scope=nullptr)
Definition: VectorType.cpp:168
A uniqued constant string class.
Definition: ConstString.h:38
Definition: SBAddress.h:15
SyntheticChildrenFrontEnd * LibcxxQueueFrontEndCreator(CXXSyntheticChildren *, lldb::ValueObjectSP)
Definition: LibCxxQueue.cpp:55