Data formatter for libc++'s std::slice_array. More...

Inheritance diagram for lldb_private::formatters::LibcxxStdSliceArraySyntheticFrontEnd:

Public Member Functions
	LibcxxStdSliceArraySyntheticFrontEnd (lldb::ValueObjectSP valobj_sp)
	~LibcxxStdSliceArraySyntheticFrontEnd () 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
	Determine the index of a named child.
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_start = nullptr
	A non-owning pointer to slice_array.__vp_.
size_t	m_size = 0
	slice_array.__size_.
size_t	m_stride = 0
	slice_array.__stride_.
CompilerType	m_element_type
	The type of slice_array's template argument T.
uint32_t	m_element_size = 0
	The sizeof slice_array's template argument T.

Additional Inherited Members
Public Types inherited from lldb_private::SyntheticChildrenFrontEnd
typedef std::shared_ptr< SyntheticChildrenFrontEnd >	SharedPointer
typedef std::unique_ptr< SyntheticChildrenFrontEnd >	UniquePointer
Protected Member Functions inherited from lldb_private::SyntheticChildrenFrontEnd
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::slice_array.

A slice_array is created by using: operator[](std::slice slicearr); and std::slice is created by: slice(std::size_t start, std::size_t size, std::size_t stride); The std::slice_array has the following members:

__vp_ points to std::valarray::__begin_ + start
__size_ is size
__stride_is stride

Definition at line 54 of file LibCxxSliceArray.cpp.

Constructor & Destructor Documentation

◆ LibcxxStdSliceArraySyntheticFrontEnd()

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

Definition at line 84 of file LibCxxSliceArray.cpp.

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

◆ ~LibcxxStdSliceArraySyntheticFrontEnd()

lldb_private::formatters::LibcxxStdSliceArraySyntheticFrontEnd::~LibcxxStdSliceArraySyntheticFrontEnd ( )

override

Definition at line 91 of file LibCxxSliceArray.cpp.

Member Function Documentation

◆ CalculateNumChildren()

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

overridevirtual

Implements lldb_private::SyntheticChildrenFrontEnd.

Definition at line 98 of file LibCxxSliceArray.cpp.

References m_size.

◆ GetChildAtIndex()

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

overridevirtual

Implements lldb_private::SyntheticChildrenFrontEnd.

Definition at line 104 of file LibCxxSliceArray.cpp.

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

◆ GetIndexOfChildWithName()

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

overridevirtual

Determine the index of a named child.

Subscript names ("[N]") are, by default, handled automatically. For data types which need custom subscripting behavior - for example a sparse array, disable automatic subscripting with TypeOptions::eTypeOptionCustomSubscripting.

Reimplemented from lldb_private::SyntheticChildrenFrontEnd.

Definition at line 149 of file LibCxxSliceArray.cpp.

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

◆ Update()

lldb::ChildCacheState lldb_private::formatters::LibcxxStdSliceArraySyntheticFrontEnd::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 119 of file LibCxxSliceArray.cpp.

References lldb::eRefetch, lldb_private::CompilerType::GetNumTemplateArguments(), lldb_private::CompilerType::GetTypeTemplateArgument(), lldb_private::SyntheticChildrenFrontEnd::m_backend, m_element_size, m_element_type, m_size, m_start, and m_stride.

Referenced by LibcxxStdSliceArraySyntheticFrontEnd().