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-rw-r--r--lldb/source/Plugins/Language/CPlusPlus/LibCxxOptional.cpp85
1 files changed, 0 insertions, 85 deletions
diff --git a/lldb/source/Plugins/Language/CPlusPlus/LibCxxOptional.cpp b/lldb/source/Plugins/Language/CPlusPlus/LibCxxOptional.cpp
deleted file mode 100644
index 762b824f262..00000000000
--- a/lldb/source/Plugins/Language/CPlusPlus/LibCxxOptional.cpp
+++ /dev/null
@@ -1,85 +0,0 @@
-//===-- LibCxxOptional.cpp --------------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "LibCxx.h"
-#include "lldb/DataFormatters/FormattersHelpers.h"
-
-using namespace lldb;
-using namespace lldb_private;
-
-namespace {
-
-class OptionalFrontEnd : public SyntheticChildrenFrontEnd {
-public:
- OptionalFrontEnd(ValueObject &valobj) : SyntheticChildrenFrontEnd(valobj) {
- Update();
- }
-
- size_t GetIndexOfChildWithName(const ConstString &name) override {
- return formatters::ExtractIndexFromString(name.GetCString());
- }
-
- bool MightHaveChildren() override { return true; }
- bool Update() override;
- size_t CalculateNumChildren() override { return m_size; }
- ValueObjectSP GetChildAtIndex(size_t idx) override;
-
-private:
- size_t m_size = 0;
- ValueObjectSP m_base_sp;
-};
-} // namespace
-
-bool OptionalFrontEnd::Update() {
- ValueObjectSP engaged_sp(
- m_backend.GetChildMemberWithName(ConstString("__engaged_"), true));
-
- if (!engaged_sp)
- return false;
-
- // __engaged_ is a bool flag and is true if the optional contains a value.
- // Converting it to unsigned gives us a size of 1 if it contains a value
- // and 0 if not.
- m_size = engaged_sp->GetValueAsUnsigned(0);
-
- return false;
-}
-
-ValueObjectSP OptionalFrontEnd::GetChildAtIndex(size_t idx) {
- if (idx >= m_size)
- return ValueObjectSP();
-
- // __val_ contains the underlying value of an optional if it has one.
- // Currently because it is part of an anonymous union GetChildMemberWithName()
- // does not peer through and find it unless we are at the parent itself.
- // We can obtain the parent through __engaged_.
- ValueObjectSP val_sp(
- m_backend.GetChildMemberWithName(ConstString("__engaged_"), true)
- ->GetParent()
- ->GetChildAtIndex(0, true)
- ->GetChildMemberWithName(ConstString("__val_"), true));
-
- if (!val_sp)
- return ValueObjectSP();
-
- CompilerType holder_type = val_sp->GetCompilerType();
-
- if (!holder_type)
- return ValueObjectSP();
-
- return val_sp->Clone(ConstString(llvm::formatv("Value").str()));
-}
-
-SyntheticChildrenFrontEnd *
-formatters::LibcxxOptionalFrontEndCreator(CXXSyntheticChildren *,
- lldb::ValueObjectSP valobj_sp) {
- if (valobj_sp)
- return new OptionalFrontEnd(*valobj_sp);
- return nullptr;
-}
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