diff options
Diffstat (limited to 'lldb/source/Plugins/Language/CPlusPlus/LibCxxOptional.cpp')
-rw-r--r-- | lldb/source/Plugins/Language/CPlusPlus/LibCxxOptional.cpp | 85 |
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; -} |