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//===-- LibStdcpp.cpp ---------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "LibStdcpp.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/Stream.h"
#include "lldb/Core/ValueObject.h"
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/DataFormatters/VectorIterator.h"
#include "lldb/Host/Endian.h"
#include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Target/Target.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::formatters;
class LibstdcppMapIteratorSyntheticFrontEnd : public SyntheticChildrenFrontEnd
{
public:
LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp);
size_t
CalculateNumChildren() override;
lldb::ValueObjectSP
GetChildAtIndex(size_t idx) override;
bool
Update() override;
bool
MightHaveChildren() override;
size_t
GetIndexOfChildWithName (const ConstString &name) override;
~LibstdcppMapIteratorSyntheticFrontEnd() override;
private:
ExecutionContextRef m_exe_ctx_ref;
lldb::addr_t m_pair_address;
CompilerType m_pair_type;
EvaluateExpressionOptions m_options;
lldb::ValueObjectSP m_pair_sp;
};
/*
(std::_Rb_tree_iterator<std::pair<const int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >) ibeg = {
(_Base_ptr) _M_node = 0x0000000100103910 {
(std::_Rb_tree_color) _M_color = _S_black
(std::_Rb_tree_node_base::_Base_ptr) _M_parent = 0x00000001001038c0
(std::_Rb_tree_node_base::_Base_ptr) _M_left = 0x0000000000000000
(std::_Rb_tree_node_base::_Base_ptr) _M_right = 0x0000000000000000
}
}
*/
LibstdcppMapIteratorSyntheticFrontEnd::LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_pair_address(0),
m_pair_type(),
m_options(),
m_pair_sp()
{
if (valobj_sp)
Update();
m_options.SetCoerceToId(false);
m_options.SetUnwindOnError(true);
m_options.SetKeepInMemory(true);
m_options.SetUseDynamic(lldb::eDynamicCanRunTarget);
}
bool
LibstdcppMapIteratorSyntheticFrontEnd::Update()
{
ValueObjectSP valobj_sp = m_backend.GetSP();
if (!valobj_sp)
return false;
TargetSP target_sp(valobj_sp->GetTargetSP());
if (!target_sp)
return false;
bool is_64bit = (target_sp->GetArchitecture().GetAddressByteSize() == 8);
if (!valobj_sp)
return false;
m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
ValueObjectSP _M_node_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_node"), true));
if (!_M_node_sp)
return false;
m_pair_address = _M_node_sp->GetValueAsUnsigned(0);
if (m_pair_address == 0)
return false;
m_pair_address += (is_64bit ? 32 : 16);
CompilerType my_type(valobj_sp->GetCompilerType());
if (my_type.GetNumTemplateArguments() >= 1)
{
TemplateArgumentKind kind;
CompilerType pair_type = my_type.GetTemplateArgument(0, kind);
if (kind != eTemplateArgumentKindType && kind != eTemplateArgumentKindTemplate && kind != eTemplateArgumentKindTemplateExpansion)
return false;
m_pair_type = pair_type;
}
else
return false;
return true;
}
size_t
LibstdcppMapIteratorSyntheticFrontEnd::CalculateNumChildren ()
{
return 2;
}
lldb::ValueObjectSP
LibstdcppMapIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx)
{
if (m_pair_address != 0 && m_pair_type)
{
if (!m_pair_sp)
m_pair_sp = CreateValueObjectFromAddress("pair", m_pair_address, m_exe_ctx_ref, m_pair_type);
if (m_pair_sp)
return m_pair_sp->GetChildAtIndex(idx, true);
}
return lldb::ValueObjectSP();
}
bool
LibstdcppMapIteratorSyntheticFrontEnd::MightHaveChildren ()
{
return true;
}
size_t
LibstdcppMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
{
if (name == ConstString("first"))
return 0;
if (name == ConstString("second"))
return 1;
return UINT32_MAX;
}
LibstdcppMapIteratorSyntheticFrontEnd::~LibstdcppMapIteratorSyntheticFrontEnd ()
{}
SyntheticChildrenFrontEnd*
lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
{
if (!valobj_sp)
return NULL;
return (new LibstdcppMapIteratorSyntheticFrontEnd(valobj_sp));
}
/*
(lldb) fr var ibeg --ptr-depth 1
(__gnu_cxx::__normal_iterator<int *, std::vector<int, std::allocator<int> > >) ibeg = {
_M_current = 0x00000001001037a0 {
*_M_current = 1
}
}
*/
SyntheticChildrenFrontEnd*
lldb_private::formatters::LibStdcppVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
{
static ConstString g_item_name;
if (!g_item_name)
g_item_name.SetCString("_M_current");
if (!valobj_sp)
return NULL;
return (new VectorIteratorSyntheticFrontEnd(valobj_sp,g_item_name));
}
lldb_private::formatters::VectorIteratorSyntheticFrontEnd::VectorIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp,
ConstString item_name) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_item_name(item_name),
m_item_sp()
{
if (valobj_sp)
Update();
}
bool
lldb_private::formatters::VectorIteratorSyntheticFrontEnd::Update()
{
m_item_sp.reset();
ValueObjectSP valobj_sp = m_backend.GetSP();
if (!valobj_sp)
return false;
if (!valobj_sp)
return false;
ValueObjectSP item_ptr(valobj_sp->GetChildMemberWithName(m_item_name,true));
if (!item_ptr)
return false;
if (item_ptr->GetValueAsUnsigned(0) == 0)
return false;
Error err;
m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
m_item_sp = CreateValueObjectFromAddress("item", item_ptr->GetValueAsUnsigned(0), m_exe_ctx_ref, item_ptr->GetCompilerType().GetPointeeType());
if (err.Fail())
m_item_sp.reset();
return false;
}
size_t
lldb_private::formatters::VectorIteratorSyntheticFrontEnd::CalculateNumChildren ()
{
return 1;
}
lldb::ValueObjectSP
lldb_private::formatters::VectorIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx)
{
if (idx == 0)
return m_item_sp;
return lldb::ValueObjectSP();
}
bool
lldb_private::formatters::VectorIteratorSyntheticFrontEnd::MightHaveChildren ()
{
return true;
}
size_t
lldb_private::formatters::VectorIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
{
if (name == ConstString("item"))
return 0;
return UINT32_MAX;
}
lldb_private::formatters::VectorIteratorSyntheticFrontEnd::~VectorIteratorSyntheticFrontEnd ()
{
}
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