Data formatter for libc++'s std::"proxy_array". More...

Inheritance diagram for lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd:

Public Member Functions
	LibcxxStdProxyArraySyntheticFrontEnd (lldb::ValueObjectSP valobj_sp)
	~LibcxxStdProxyArraySyntheticFrontEnd () override
llvm::Expected< uint32_t >	CalculateNumChildren () override
lldb::ValueObjectSP	GetChildAtIndex (uint32_t idx) override
lldb::ChildCacheState	Update () override
	This function is assumed to always succeed and if it fails, the front-end should know to deal with it in the correct way (most probably, by refusing to return any children).
llvm::Expected< size_t >	GetIndexOfChildWithName (ConstString name) override
Public Member Functions inherited from lldb_private::SyntheticChildrenFrontEnd
	SyntheticChildrenFrontEnd (ValueObject &backend)
virtual	~SyntheticChildrenFrontEnd ()=default
virtual llvm::Expected< uint32_t >	CalculateNumChildren (uint32_t max)
uint32_t	CalculateNumChildrenIgnoringErrors (uint32_t max=UINT32_MAX)
virtual bool	MightHaveChildren ()
virtual lldb::ValueObjectSP	GetSyntheticValue ()
virtual ConstString	GetSyntheticTypeName ()

Private Attributes
ValueObject *	m_base = nullptr
	A non-owning pointer to the array's __vp_.
CompilerType	m_element_type
	The type of the array's template argument T.
uint32_t	m_element_size = 0
	The sizeof the array's template argument T.
ValueObject *	m_start = nullptr
	A non-owning pointer to the array's __1d_.__begin_.
ValueObject *	m_finish = nullptr
	A non-owning pointer to the array's __1d_.__end_.
CompilerType	m_element_type_size_t
	The type of the __1d_ array's template argument T (size_t).
uint32_t	m_element_size_size_t = 0
	The sizeof the __1d_ array's template argument T (size_t)

Additional Inherited Members
Public Types inherited from lldb_private::SyntheticChildrenFrontEnd
typedef std::shared_ptr< SyntheticChildrenFrontEnd >	SharedPointer
typedef std::unique_ptr< SyntheticChildrenFrontEnd >	AutoPointer
Protected Member Functions inherited from lldb_private::SyntheticChildrenFrontEnd
void	SetValid (bool valid)
bool	IsValid ()
lldb::ValueObjectSP	CreateValueObjectFromExpression (llvm::StringRef name, llvm::StringRef expression, const ExecutionContext &exe_ctx)
lldb::ValueObjectSP	CreateValueObjectFromAddress (llvm::StringRef name, uint64_t address, const ExecutionContext &exe_ctx, CompilerType type, bool do_deref=true)
lldb::ValueObjectSP	CreateValueObjectFromData (llvm::StringRef name, const DataExtractor &data, const ExecutionContext &exe_ctx, CompilerType type)
Protected Attributes inherited from lldb_private::SyntheticChildrenFrontEnd
ValueObject &	m_backend

Detailed Description

Data formatter for libc++'s std::"proxy_array".

A proxy_array's are created by using: std::gslice_array operator[](const std::gslice& gslicearr); std::mask_array operator[](const std::valarray<bool>& boolarr); std::indirect_array operator[](const std::valarray<std::size_t>& indarr);

These arrays have the following members:

__vp_ points to std::valarray::__begin_
__1d_ an array of offsets of the elements from __vp_

Definition at line 32 of file LibCxxProxyArray.cpp.

Constructor & Destructor Documentation

◆ LibcxxStdProxyArraySyntheticFrontEnd()

lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::LibcxxStdProxyArraySyntheticFrontEnd ( lldb::ValueObjectSP valobj_sp )

Definition at line 67 of file LibCxxProxyArray.cpp.

References m_element_type, lldb_private::SyntheticChildrenFrontEnd::SyntheticChildrenFrontEnd(), and Update().

◆ ~LibcxxStdProxyArraySyntheticFrontEnd()

lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::~LibcxxStdProxyArraySyntheticFrontEnd ( )

override

Definition at line 74 of file LibCxxProxyArray.cpp.

Member Function Documentation

◆ CalculateNumChildren()

llvm::Expected< uint32_t > lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::CalculateNumChildren ( )

overridevirtual

Implements lldb_private::SyntheticChildrenFrontEnd.

Definition at line 81 of file LibCxxProxyArray.cpp.

References m_element_size_size_t, m_finish, and m_start.

◆ GetChildAtIndex()

lldb::ValueObjectSP lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::GetChildAtIndex ( uint32_t idx )

overridevirtual

Implements lldb_private::SyntheticChildrenFrontEnd.

Definition at line 102 of file LibCxxProxyArray.cpp.

References lldb_private::SyntheticChildrenFrontEnd::CreateValueObjectFromAddress(), lldb_private::StreamString::GetString(), lldb_private::SyntheticChildrenFrontEnd::m_backend, m_base, m_element_size, m_element_size_size_t, m_element_type, m_element_type_size_t, m_start, and lldb_private::Stream::Printf().

◆ GetIndexOfChildWithName()

llvm::Expected< size_t > lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::GetIndexOfChildWithName ( ConstString name )

overridevirtual

Implements lldb_private::SyntheticChildrenFrontEnd.

Definition at line 177 of file LibCxxProxyArray.cpp.

References lldb_private::ConstString::AsCString(), lldb_private::formatters::ExtractIndexFromString(), lldb_private::ConstString::GetCString(), and m_base.

◆ Update()

lldb::ChildCacheState lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::Update ( )

overridevirtual

This function is assumed to always succeed and if it fails, the front-end should know to deal with it in the correct way (most probably, by refusing to return any children).

The return value of Update should actually be interpreted as "ValueObjectSynthetic cache is good/bad". If this function returns lldb::ChildCacheState::eReuse, ValueObjectSynthetic is allowed to use the children it fetched previously and cached. Otherwise, ValueObjectSynthetic must throw away its cache, and query again for children.

Implements lldb_private::SyntheticChildrenFrontEnd.

Definition at line 130 of file LibCxxProxyArray.cpp.

References lldb::eRefetch, lldb_private::CompilerType::GetNumTemplateArguments(), lldb_private::CompilerType::GetTypeTemplateArgument(), lldb_private::SyntheticChildrenFrontEnd::m_backend, m_base, m_element_size, m_element_size_size_t, m_element_type, m_element_type_size_t, m_finish, and m_start.