/source/DataFormatters/LibStdcpp.cpp
C++ | 331 lines | 242 code | 43 blank | 46 comment | 57 complexity | 74590122c8f846ef5df441fab1d71fd1 MD5 | raw file
- //===-- 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 "lldb/lldb-python.h"
- #include "lldb/DataFormatters/CXXFormatterFunctions.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/Host/Endian.h"
- #include "lldb/Symbol/ClangASTContext.h"
- #include "lldb/Target/ObjCLanguageRuntime.h"
- #include "lldb/Target/Target.h"
- using namespace lldb;
- using namespace lldb_private;
- using namespace lldb_private::formatters;
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::LibstdcppVectorBoolSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
- SyntheticChildrenFrontEnd(*valobj_sp.get()),
- m_exe_ctx_ref(),
- m_count(0),
- m_base_data_address(0),
- m_options()
- {
- if (valobj_sp)
- Update();
- m_options.SetCoerceToId(false);
- m_options.SetUnwindOnError(true);
- m_options.SetKeepInMemory(true);
- m_options.SetUseDynamic(lldb::eDynamicCanRunTarget);
- }
- size_t
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::CalculateNumChildren ()
- {
- return m_count;
- }
- lldb::ValueObjectSP
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::GetChildAtIndex (size_t idx)
- {
- if (idx >= m_count)
- return ValueObjectSP();
- if (m_base_data_address == 0 || m_count == 0)
- return ValueObjectSP();
- size_t byte_idx = (idx >> 3); // divide by 8 to get byte index
- size_t bit_index = (idx & 7); // efficient idx % 8 for bit index
- lldb::addr_t byte_location = m_base_data_address + byte_idx;
- ProcessSP process_sp(m_exe_ctx_ref.GetProcessSP());
- if (!process_sp)
- return ValueObjectSP();
- uint8_t byte = 0;
- uint8_t mask = 0;
- Error err;
- size_t bytes_read = process_sp->ReadMemory(byte_location, &byte, 1, err);
- if (err.Fail() || bytes_read == 0)
- return ValueObjectSP();
- switch (bit_index)
- {
- case 0:
- mask = 1; break;
- case 1:
- mask = 2; break;
- case 2:
- mask = 4; break;
- case 3:
- mask = 8; break;
- case 4:
- mask = 16; break;
- case 5:
- mask = 32; break;
- case 6:
- mask = 64; break;
- case 7:
- mask = 128; break;
- default:
- return ValueObjectSP();
- }
- bool bit_set = ((byte & mask) != 0);
- Target& target(process_sp->GetTarget());
- ValueObjectSP retval_sp;
- if (bit_set)
- target.EvaluateExpression("(bool)true", NULL, retval_sp);
- else
- target.EvaluateExpression("(bool)false", NULL, retval_sp);
- StreamString name; name.Printf("[%" PRIu64 "]", (uint64_t)idx);
- if (retval_sp)
- retval_sp->SetName(ConstString(name.GetData()));
- return retval_sp;
- }
- /*((std::vector<std::allocator<bool> >) vBool = {
- (std::_Bvector_base<std::allocator<bool> >) std::_Bvector_base<std::allocator<bool> > = {
- (std::_Bvector_base<std::allocator<bool> >::_Bvector_impl) _M_impl = {
- (std::_Bit_iterator) _M_start = {
- (std::_Bit_iterator_base) std::_Bit_iterator_base = {
- (_Bit_type *) _M_p = 0x0016b160
- (unsigned int) _M_offset = 0
- }
- }
- (std::_Bit_iterator) _M_finish = {
- (std::_Bit_iterator_base) std::_Bit_iterator_base = {
- (_Bit_type *) _M_p = 0x0016b16c
- (unsigned int) _M_offset = 16
- }
- }
- (_Bit_type *) _M_end_of_storage = 0x0016b170
- }
- }
- }
- */
- bool
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::Update()
- {
- ValueObjectSP valobj_sp = m_backend.GetSP();
- if (!valobj_sp)
- return false;
- if (!valobj_sp)
- return false;
- m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
-
- ValueObjectSP m_impl_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_impl"), true));
- if (!m_impl_sp)
- return false;
-
- ValueObjectSP m_start_sp(m_impl_sp->GetChildMemberWithName(ConstString("_M_start"), true));
- ValueObjectSP m_finish_sp(m_impl_sp->GetChildMemberWithName(ConstString("_M_finish"), true));
-
- ValueObjectSP start_p_sp, finish_p_sp, finish_offset_sp;
-
- if (!m_start_sp || !m_finish_sp)
- return false;
-
- start_p_sp = m_start_sp->GetChildMemberWithName(ConstString("_M_p"), true);
- finish_p_sp = m_finish_sp->GetChildMemberWithName(ConstString("_M_p"), true);
- finish_offset_sp = m_finish_sp->GetChildMemberWithName(ConstString("_M_offset"), true);
-
- if (!start_p_sp || !finish_offset_sp || !finish_p_sp)
- return false;
-
- m_base_data_address = start_p_sp->GetValueAsUnsigned(0);
- if (!m_base_data_address)
- return false;
-
- lldb::addr_t end_data_address(finish_p_sp->GetValueAsUnsigned(0));
- if (!end_data_address)
- return false;
-
- if (end_data_address < m_base_data_address)
- return false;
- else
- m_count = finish_offset_sp->GetValueAsUnsigned(0) + (end_data_address-m_base_data_address)*8;
-
- return true;
- }
- bool
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::MightHaveChildren ()
- {
- return true;
- }
- size_t
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
- {
- if (!m_count || !m_base_data_address)
- return UINT32_MAX;
- const char* item_name = name.GetCString();
- uint32_t idx = ExtractIndexFromString(item_name);
- if (idx < UINT32_MAX && idx >= CalculateNumChildren())
- return UINT32_MAX;
- return idx;
- }
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::~LibstdcppVectorBoolSyntheticFrontEnd ()
- {}
- SyntheticChildrenFrontEnd*
- lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
- {
- if (!valobj_sp)
- return NULL;
- return (new LibstdcppVectorBoolSyntheticFrontEnd(valobj_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
- }
- }
- */
- lldb_private::formatters::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
- lldb_private::formatters::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);
-
- ClangASTType my_type(valobj_sp->GetClangType());
- if (my_type.GetNumTemplateArguments() >= 1)
- {
- TemplateArgumentKind kind;
- ClangASTType 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
- lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::CalculateNumChildren ()
- {
- return 2;
- }
- lldb::ValueObjectSP
- lldb_private::formatters::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
- lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::MightHaveChildren ()
- {
- return true;
- }
- size_t
- lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
- {
- if (name == ConstString("first"))
- return 0;
- if (name == ConstString("second"))
- return 1;
- return UINT32_MAX;
- }
- lldb_private::formatters::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));
- }