| //===-- ValueObject.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/Core/ValueObject.h" |
| |
| // C Includes |
| #include <stdlib.h> |
| |
| // C++ Includes |
| // Other libraries and framework includes |
| #include "llvm/Support/raw_ostream.h" |
| #include "clang/AST/Type.h" |
| |
| // Project includes |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Core/ValueObjectChild.h" |
| #include "lldb/Core/ValueObjectConstResult.h" |
| #include "lldb/Core/ValueObjectDynamicValue.h" |
| #include "lldb/Core/ValueObjectList.h" |
| #include "lldb/Core/ValueObjectMemory.h" |
| #include "lldb/Core/ValueObjectSyntheticFilter.h" |
| |
| #include "lldb/Host/Endian.h" |
| |
| #include "lldb/Interpreter/ScriptInterpreterPython.h" |
| |
| #include "lldb/Symbol/ClangASTType.h" |
| #include "lldb/Symbol/ClangASTContext.h" |
| #include "lldb/Symbol/Type.h" |
| |
| #include "lldb/Target/ExecutionContext.h" |
| #include "lldb/Target/LanguageRuntime.h" |
| #include "lldb/Target/ObjCLanguageRuntime.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Thread.h" |
| |
| #include "lldb/Utility/RefCounter.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace lldb_utility; |
| |
| static lldb::user_id_t g_value_obj_uid = 0; |
| |
| //---------------------------------------------------------------------- |
| // ValueObject constructor |
| //---------------------------------------------------------------------- |
| ValueObject::ValueObject (ValueObject &parent) : |
| UserID (++g_value_obj_uid), // Unique identifier for every value object |
| m_parent (&parent), |
| m_update_point (parent.GetUpdatePoint ()), |
| m_name (), |
| m_data (), |
| m_value (), |
| m_error (), |
| m_value_str (), |
| m_old_value_str (), |
| m_location_str (), |
| m_summary_str (), |
| m_object_desc_str (), |
| m_manager(parent.GetManager()), |
| m_children (), |
| m_synthetic_children (), |
| m_dynamic_value (NULL), |
| m_synthetic_value(NULL), |
| m_deref_valobj(NULL), |
| m_format (eFormatDefault), |
| m_last_format_mgr_revision(0), |
| m_last_format_mgr_dynamic(parent.m_last_format_mgr_dynamic), |
| m_last_summary_format(), |
| m_forced_summary_format(), |
| m_last_value_format(), |
| m_last_synthetic_filter(), |
| m_user_id_of_forced_summary(0), |
| m_value_is_valid (false), |
| m_value_did_change (false), |
| m_children_count_valid (false), |
| m_old_value_valid (false), |
| m_pointers_point_to_load_addrs (false), |
| m_is_deref_of_parent (false), |
| m_is_array_item_for_pointer(false), |
| m_is_bitfield_for_scalar(false), |
| m_is_expression_path_child(false), |
| m_is_child_at_offset(false), |
| m_is_expression_result(parent.m_is_expression_result), |
| m_dump_printable_counter(0) |
| { |
| m_manager->ManageObject(this); |
| } |
| |
| //---------------------------------------------------------------------- |
| // ValueObject constructor |
| //---------------------------------------------------------------------- |
| ValueObject::ValueObject (ExecutionContextScope *exe_scope) : |
| UserID (++g_value_obj_uid), // Unique identifier for every value object |
| m_parent (NULL), |
| m_update_point (exe_scope), |
| m_name (), |
| m_data (), |
| m_value (), |
| m_error (), |
| m_value_str (), |
| m_old_value_str (), |
| m_location_str (), |
| m_summary_str (), |
| m_object_desc_str (), |
| m_manager(), |
| m_children (), |
| m_synthetic_children (), |
| m_dynamic_value (NULL), |
| m_synthetic_value(NULL), |
| m_deref_valobj(NULL), |
| m_format (eFormatDefault), |
| m_last_format_mgr_revision(0), |
| m_last_format_mgr_dynamic(lldb::eNoDynamicValues), |
| m_last_summary_format(), |
| m_forced_summary_format(), |
| m_last_value_format(), |
| m_last_synthetic_filter(), |
| m_user_id_of_forced_summary(0), |
| m_value_is_valid (false), |
| m_value_did_change (false), |
| m_children_count_valid (false), |
| m_old_value_valid (false), |
| m_pointers_point_to_load_addrs (false), |
| m_is_deref_of_parent (false), |
| m_is_array_item_for_pointer(false), |
| m_is_bitfield_for_scalar(false), |
| m_is_expression_path_child(false), |
| m_is_child_at_offset(false), |
| m_is_expression_result(false), |
| m_dump_printable_counter(0) |
| { |
| m_manager = new ValueObjectManager(); |
| m_manager->ManageObject (this); |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| ValueObject::~ValueObject () |
| { |
| } |
| |
| bool |
| ValueObject::UpdateValueIfNeeded (bool update_format) |
| { |
| return UpdateValueIfNeeded(m_last_format_mgr_dynamic, update_format); |
| } |
| |
| bool |
| ValueObject::UpdateValueIfNeeded (lldb::DynamicValueType use_dynamic, bool update_format) |
| { |
| |
| if (update_format) |
| UpdateFormatsIfNeeded(use_dynamic); |
| |
| // If this is a constant value, then our success is predicated on whether |
| // we have an error or not |
| if (GetIsConstant()) |
| return m_error.Success(); |
| |
| bool first_update = m_update_point.IsFirstEvaluation(); |
| |
| if (m_update_point.NeedsUpdating()) |
| { |
| m_update_point.SetUpdated(); |
| |
| // Save the old value using swap to avoid a string copy which |
| // also will clear our m_value_str |
| if (m_value_str.empty()) |
| { |
| m_old_value_valid = false; |
| } |
| else |
| { |
| m_old_value_valid = true; |
| m_old_value_str.swap (m_value_str); |
| m_value_str.clear(); |
| } |
| |
| ClearUserVisibleData(); |
| |
| const bool value_was_valid = GetValueIsValid(); |
| SetValueDidChange (false); |
| |
| m_error.Clear(); |
| |
| // Call the pure virtual function to update the value |
| bool success = UpdateValue (); |
| |
| SetValueIsValid (success); |
| |
| if (first_update) |
| SetValueDidChange (false); |
| else if (!m_value_did_change && success == false) |
| { |
| // The value wasn't gotten successfully, so we mark this |
| // as changed if the value used to be valid and now isn't |
| SetValueDidChange (value_was_valid); |
| } |
| } |
| return m_error.Success(); |
| } |
| |
| void |
| ValueObject::UpdateFormatsIfNeeded(lldb::DynamicValueType use_dynamic) |
| { |
| LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_TYPES)); |
| if (log) |
| log->Printf("checking for FormatManager revisions. VO named %s is at revision %d, while the format manager is at revision %d", |
| GetName().GetCString(), |
| m_last_format_mgr_revision, |
| Debugger::Formatting::ValueFormats::GetCurrentRevision()); |
| if (HasCustomSummaryFormat() && m_update_point.GetUpdateID() != m_user_id_of_forced_summary) |
| { |
| ClearCustomSummaryFormat(); |
| m_summary_str.clear(); |
| } |
| if ( (m_last_format_mgr_revision != Debugger::Formatting::ValueFormats::GetCurrentRevision()) || |
| m_last_format_mgr_dynamic != use_dynamic) |
| { |
| if (m_last_summary_format.get()) |
| m_last_summary_format.reset((StringSummaryFormat*)NULL); |
| if (m_last_value_format.get()) |
| m_last_value_format.reset(/*(ValueFormat*)NULL*/); |
| if (m_last_synthetic_filter.get()) |
| m_last_synthetic_filter.reset(/*(SyntheticFilter*)NULL*/); |
| |
| m_synthetic_value = NULL; |
| |
| Debugger::Formatting::ValueFormats::Get(*this, lldb::eNoDynamicValues, m_last_value_format); |
| Debugger::Formatting::GetSummaryFormat(*this, use_dynamic, m_last_summary_format); |
| Debugger::Formatting::GetSyntheticFilter(*this, use_dynamic, m_last_synthetic_filter); |
| |
| m_last_format_mgr_revision = Debugger::Formatting::ValueFormats::GetCurrentRevision(); |
| m_last_format_mgr_dynamic = use_dynamic; |
| |
| ClearUserVisibleData(); |
| } |
| } |
| |
| DataExtractor & |
| ValueObject::GetDataExtractor () |
| { |
| UpdateValueIfNeeded(false); |
| return m_data; |
| } |
| |
| const Error & |
| ValueObject::GetError() |
| { |
| UpdateValueIfNeeded(false); |
| return m_error; |
| } |
| |
| const ConstString & |
| ValueObject::GetName() const |
| { |
| return m_name; |
| } |
| |
| const char * |
| ValueObject::GetLocationAsCString () |
| { |
| if (UpdateValueIfNeeded(false)) |
| { |
| if (m_location_str.empty()) |
| { |
| StreamString sstr; |
| |
| switch (m_value.GetValueType()) |
| { |
| default: |
| break; |
| |
| case Value::eValueTypeScalar: |
| if (m_value.GetContextType() == Value::eContextTypeRegisterInfo) |
| { |
| RegisterInfo *reg_info = m_value.GetRegisterInfo(); |
| if (reg_info) |
| { |
| if (reg_info->name) |
| m_location_str = reg_info->name; |
| else if (reg_info->alt_name) |
| m_location_str = reg_info->alt_name; |
| break; |
| } |
| } |
| m_location_str = "scalar"; |
| break; |
| |
| case Value::eValueTypeLoadAddress: |
| case Value::eValueTypeFileAddress: |
| case Value::eValueTypeHostAddress: |
| { |
| uint32_t addr_nibble_size = m_data.GetAddressByteSize() * 2; |
| sstr.Printf("0x%*.*llx", addr_nibble_size, addr_nibble_size, m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS)); |
| m_location_str.swap(sstr.GetString()); |
| } |
| break; |
| } |
| } |
| } |
| return m_location_str.c_str(); |
| } |
| |
| Value & |
| ValueObject::GetValue() |
| { |
| return m_value; |
| } |
| |
| const Value & |
| ValueObject::GetValue() const |
| { |
| return m_value; |
| } |
| |
| bool |
| ValueObject::ResolveValue (Scalar &scalar) |
| { |
| if (UpdateValueIfNeeded(false)) // make sure that you are up to date before returning anything |
| { |
| ExecutionContext exe_ctx; |
| ExecutionContextScope *exe_scope = GetExecutionContextScope(); |
| if (exe_scope) |
| exe_scope->CalculateExecutionContext(exe_ctx); |
| scalar = m_value.ResolveValue(&exe_ctx, GetClangAST ()); |
| return scalar.IsValid(); |
| } |
| else |
| return false; |
| } |
| |
| bool |
| ValueObject::GetValueIsValid () const |
| { |
| return m_value_is_valid; |
| } |
| |
| |
| void |
| ValueObject::SetValueIsValid (bool b) |
| { |
| m_value_is_valid = b; |
| } |
| |
| bool |
| ValueObject::GetValueDidChange () |
| { |
| GetValueAsCString (); |
| return m_value_did_change; |
| } |
| |
| void |
| ValueObject::SetValueDidChange (bool value_changed) |
| { |
| m_value_did_change = value_changed; |
| } |
| |
| ValueObjectSP |
| ValueObject::GetChildAtIndex (uint32_t idx, bool can_create) |
| { |
| ValueObjectSP child_sp; |
| // We may need to update our value if we are dynamic |
| if (IsPossibleDynamicType ()) |
| UpdateValueIfNeeded(false); |
| if (idx < GetNumChildren()) |
| { |
| // Check if we have already made the child value object? |
| if (can_create && m_children[idx] == NULL) |
| { |
| // No we haven't created the child at this index, so lets have our |
| // subclass do it and cache the result for quick future access. |
| m_children[idx] = CreateChildAtIndex (idx, false, 0); |
| } |
| |
| if (m_children[idx] != NULL) |
| return m_children[idx]->GetSP(); |
| } |
| return child_sp; |
| } |
| |
| uint32_t |
| ValueObject::GetIndexOfChildWithName (const ConstString &name) |
| { |
| bool omit_empty_base_classes = true; |
| return ClangASTContext::GetIndexOfChildWithName (GetClangAST(), |
| GetClangType(), |
| name.GetCString(), |
| omit_empty_base_classes); |
| } |
| |
| ValueObjectSP |
| ValueObject::GetChildMemberWithName (const ConstString &name, bool can_create) |
| { |
| // when getting a child by name, it could be buried inside some base |
| // classes (which really aren't part of the expression path), so we |
| // need a vector of indexes that can get us down to the correct child |
| ValueObjectSP child_sp; |
| |
| // We may need to update our value if we are dynamic |
| if (IsPossibleDynamicType ()) |
| UpdateValueIfNeeded(false); |
| |
| std::vector<uint32_t> child_indexes; |
| clang::ASTContext *clang_ast = GetClangAST(); |
| void *clang_type = GetClangType(); |
| bool omit_empty_base_classes = true; |
| const size_t num_child_indexes = ClangASTContext::GetIndexOfChildMemberWithName (clang_ast, |
| clang_type, |
| name.GetCString(), |
| omit_empty_base_classes, |
| child_indexes); |
| if (num_child_indexes > 0) |
| { |
| std::vector<uint32_t>::const_iterator pos = child_indexes.begin (); |
| std::vector<uint32_t>::const_iterator end = child_indexes.end (); |
| |
| child_sp = GetChildAtIndex(*pos, can_create); |
| for (++pos; pos != end; ++pos) |
| { |
| if (child_sp) |
| { |
| ValueObjectSP new_child_sp(child_sp->GetChildAtIndex (*pos, can_create)); |
| child_sp = new_child_sp; |
| } |
| else |
| { |
| child_sp.reset(); |
| } |
| |
| } |
| } |
| return child_sp; |
| } |
| |
| |
| uint32_t |
| ValueObject::GetNumChildren () |
| { |
| if (!m_children_count_valid) |
| { |
| SetNumChildren (CalculateNumChildren()); |
| } |
| return m_children.size(); |
| } |
| void |
| ValueObject::SetNumChildren (uint32_t num_children) |
| { |
| m_children_count_valid = true; |
| m_children.resize(num_children); |
| } |
| |
| void |
| ValueObject::SetName (const ConstString &name) |
| { |
| m_name = name; |
| } |
| |
| ValueObject * |
| ValueObject::CreateChildAtIndex (uint32_t idx, bool synthetic_array_member, int32_t synthetic_index) |
| { |
| ValueObject *valobj = NULL; |
| |
| bool omit_empty_base_classes = true; |
| bool ignore_array_bounds = synthetic_array_member; |
| std::string child_name_str; |
| uint32_t child_byte_size = 0; |
| int32_t child_byte_offset = 0; |
| uint32_t child_bitfield_bit_size = 0; |
| uint32_t child_bitfield_bit_offset = 0; |
| bool child_is_base_class = false; |
| bool child_is_deref_of_parent = false; |
| |
| const bool transparent_pointers = synthetic_array_member == false; |
| clang::ASTContext *clang_ast = GetClangAST(); |
| clang_type_t clang_type = GetClangType(); |
| clang_type_t child_clang_type; |
| |
| ExecutionContext exe_ctx; |
| GetExecutionContextScope()->CalculateExecutionContext (exe_ctx); |
| |
| child_clang_type = ClangASTContext::GetChildClangTypeAtIndex (&exe_ctx, |
| clang_ast, |
| GetName().GetCString(), |
| clang_type, |
| idx, |
| transparent_pointers, |
| omit_empty_base_classes, |
| ignore_array_bounds, |
| child_name_str, |
| child_byte_size, |
| child_byte_offset, |
| child_bitfield_bit_size, |
| child_bitfield_bit_offset, |
| child_is_base_class, |
| child_is_deref_of_parent); |
| if (child_clang_type && child_byte_size) |
| { |
| if (synthetic_index) |
| child_byte_offset += child_byte_size * synthetic_index; |
| |
| ConstString child_name; |
| if (!child_name_str.empty()) |
| child_name.SetCString (child_name_str.c_str()); |
| |
| valobj = new ValueObjectChild (*this, |
| clang_ast, |
| child_clang_type, |
| child_name, |
| child_byte_size, |
| child_byte_offset, |
| child_bitfield_bit_size, |
| child_bitfield_bit_offset, |
| child_is_base_class, |
| child_is_deref_of_parent); |
| if (m_pointers_point_to_load_addrs) |
| valobj->SetPointersPointToLoadAddrs (m_pointers_point_to_load_addrs); |
| } |
| |
| return valobj; |
| } |
| |
| const char * |
| ValueObject::GetSummaryAsCString () |
| { |
| if (UpdateValueIfNeeded (true)) |
| { |
| if (m_summary_str.empty()) |
| { |
| SummaryFormat *summary_format = GetSummaryFormat().get(); |
| |
| if (summary_format) |
| { |
| m_summary_str = summary_format->FormatObject(GetSP()); |
| } |
| else |
| { |
| clang_type_t clang_type = GetClangType(); |
| |
| // Do some default printout for function pointers |
| if (clang_type) |
| { |
| StreamString sstr; |
| clang_type_t elem_or_pointee_clang_type; |
| const Flags type_flags (ClangASTContext::GetTypeInfo (clang_type, |
| GetClangAST(), |
| &elem_or_pointee_clang_type)); |
| |
| ExecutionContextScope *exe_scope = GetExecutionContextScope(); |
| if (exe_scope) |
| { |
| if (ClangASTContext::IsFunctionPointerType (clang_type)) |
| { |
| AddressType func_ptr_address_type = eAddressTypeInvalid; |
| lldb::addr_t func_ptr_address = GetPointerValue (func_ptr_address_type, true); |
| |
| if (func_ptr_address != 0 && func_ptr_address != LLDB_INVALID_ADDRESS) |
| { |
| switch (func_ptr_address_type) |
| { |
| case eAddressTypeInvalid: |
| case eAddressTypeFile: |
| break; |
| |
| case eAddressTypeLoad: |
| { |
| Address so_addr; |
| Target *target = exe_scope->CalculateTarget(); |
| if (target && target->GetSectionLoadList().IsEmpty() == false) |
| { |
| if (target->GetSectionLoadList().ResolveLoadAddress(func_ptr_address, so_addr)) |
| { |
| so_addr.Dump (&sstr, |
| exe_scope, |
| Address::DumpStyleResolvedDescription, |
| Address::DumpStyleSectionNameOffset); |
| } |
| } |
| } |
| break; |
| |
| case eAddressTypeHost: |
| break; |
| } |
| } |
| if (sstr.GetSize() > 0) |
| { |
| m_summary_str.assign (1, '('); |
| m_summary_str.append (sstr.GetData(), sstr.GetSize()); |
| m_summary_str.append (1, ')'); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| if (m_summary_str.empty()) |
| return NULL; |
| return m_summary_str.c_str(); |
| } |
| |
| bool |
| ValueObject::IsCStringContainer(bool check_pointer) |
| { |
| clang_type_t elem_or_pointee_clang_type; |
| const Flags type_flags (ClangASTContext::GetTypeInfo (GetClangType(), |
| GetClangAST(), |
| &elem_or_pointee_clang_type)); |
| bool is_char_arr_ptr (type_flags.AnySet (ClangASTContext::eTypeIsArray | ClangASTContext::eTypeIsPointer) && |
| ClangASTContext::IsCharType (elem_or_pointee_clang_type)); |
| if (!is_char_arr_ptr) |
| return false; |
| if (!check_pointer) |
| return true; |
| if (type_flags.Test(ClangASTContext::eTypeIsArray)) |
| return true; |
| lldb::addr_t cstr_address = LLDB_INVALID_ADDRESS; |
| AddressType cstr_address_type = eAddressTypeInvalid; |
| cstr_address = GetAddressOf (cstr_address_type, true); |
| return (cstr_address != LLDB_INVALID_ADDRESS); |
| } |
| |
| void |
| ValueObject::ReadPointedString(Stream& s, |
| Error& error, |
| uint32_t max_length, |
| bool honor_array, |
| lldb::Format item_format) |
| { |
| |
| if (max_length == 0) |
| max_length = 128; // FIXME this should be a setting, or a formatting parameter |
| |
| clang_type_t clang_type = GetClangType(); |
| clang_type_t elem_or_pointee_clang_type; |
| const Flags type_flags (ClangASTContext::GetTypeInfo (clang_type, |
| GetClangAST(), |
| &elem_or_pointee_clang_type)); |
| if (type_flags.AnySet (ClangASTContext::eTypeIsArray | ClangASTContext::eTypeIsPointer) && |
| ClangASTContext::IsCharType (elem_or_pointee_clang_type)) |
| { |
| ExecutionContextScope *exe_scope = GetExecutionContextScope(); |
| if (exe_scope) |
| { |
| Target *target = exe_scope->CalculateTarget(); |
| if (target == NULL) |
| { |
| s << "<no target to read from>"; |
| } |
| else |
| { |
| lldb::addr_t cstr_address = LLDB_INVALID_ADDRESS; |
| AddressType cstr_address_type = eAddressTypeInvalid; |
| |
| size_t cstr_len = 0; |
| bool capped_data = false; |
| if (type_flags.Test (ClangASTContext::eTypeIsArray)) |
| { |
| // We have an array |
| cstr_len = ClangASTContext::GetArraySize (clang_type); |
| if (cstr_len > max_length) |
| { |
| capped_data = true; |
| cstr_len = max_length; |
| } |
| cstr_address = GetAddressOf (cstr_address_type, true); |
| } |
| else |
| { |
| // We have a pointer |
| cstr_address = GetPointerValue (cstr_address_type, true); |
| } |
| if (cstr_address == LLDB_INVALID_ADDRESS) |
| { |
| s << "<invalid address for data>"; |
| } |
| else |
| { |
| Address cstr_so_addr (NULL, cstr_address); |
| DataExtractor data; |
| size_t bytes_read = 0; |
| std::vector<char> data_buffer; |
| bool prefer_file_cache = false; |
| if (cstr_len > 0 && honor_array) |
| { |
| data_buffer.resize(cstr_len); |
| data.SetData (&data_buffer.front(), data_buffer.size(), lldb::endian::InlHostByteOrder()); |
| bytes_read = target->ReadMemory (cstr_so_addr, |
| prefer_file_cache, |
| &data_buffer.front(), |
| cstr_len, |
| error); |
| if (bytes_read > 0) |
| { |
| s << '"'; |
| data.Dump (&s, |
| 0, // Start offset in "data" |
| item_format, |
| 1, // Size of item (1 byte for a char!) |
| bytes_read, // How many bytes to print? |
| UINT32_MAX, // num per line |
| LLDB_INVALID_ADDRESS,// base address |
| 0, // bitfield bit size |
| 0); // bitfield bit offset |
| if (capped_data) |
| s << "..."; |
| s << '"'; |
| } |
| else |
| s << "\"<data not available>\""; |
| } |
| else |
| { |
| cstr_len = max_length; |
| const size_t k_max_buf_size = 64; |
| data_buffer.resize (k_max_buf_size + 1); |
| // NULL terminate in case we don't get the entire C string |
| data_buffer.back() = '\0'; |
| |
| s << '"'; |
| |
| bool any_data = false; |
| |
| data.SetData (&data_buffer.front(), data_buffer.size(), endian::InlHostByteOrder()); |
| while ((bytes_read = target->ReadMemory (cstr_so_addr, |
| prefer_file_cache, |
| &data_buffer.front(), |
| k_max_buf_size, |
| error)) > 0) |
| { |
| any_data = true; |
| size_t len = strlen(&data_buffer.front()); |
| if (len == 0) |
| break; |
| if (len > bytes_read) |
| len = bytes_read; |
| if (len > cstr_len) |
| len = cstr_len; |
| |
| data.Dump (&s, |
| 0, // Start offset in "data" |
| item_format, |
| 1, // Size of item (1 byte for a char!) |
| len, // How many bytes to print? |
| UINT32_MAX, // num per line |
| LLDB_INVALID_ADDRESS,// base address |
| 0, // bitfield bit size |
| 0); // bitfield bit offset |
| |
| if (len < k_max_buf_size) |
| break; |
| if (len >= cstr_len) |
| { |
| s << "..."; |
| break; |
| } |
| cstr_len -= len; |
| cstr_so_addr.Slide (k_max_buf_size); |
| } |
| |
| if (any_data == false) |
| s << "<data not available>"; |
| |
| s << '"'; |
| } |
| } |
| } |
| } |
| } |
| else |
| { |
| error.SetErrorString("impossible to read a string from this object"); |
| s << "<not a string object>"; |
| } |
| } |
| |
| const char * |
| ValueObject::GetObjectDescription () |
| { |
| |
| if (!UpdateValueIfNeeded (true)) |
| return NULL; |
| |
| if (!m_object_desc_str.empty()) |
| return m_object_desc_str.c_str(); |
| |
| ExecutionContextScope *exe_scope = GetExecutionContextScope(); |
| if (exe_scope == NULL) |
| return NULL; |
| |
| Process *process = exe_scope->CalculateProcess(); |
| if (process == NULL) |
| return NULL; |
| |
| StreamString s; |
| |
| lldb::LanguageType language = GetObjectRuntimeLanguage(); |
| LanguageRuntime *runtime = process->GetLanguageRuntime(language); |
| |
| if (runtime == NULL) |
| { |
| // Aw, hell, if the things a pointer, or even just an integer, let's try ObjC anyway... |
| clang_type_t opaque_qual_type = GetClangType(); |
| if (opaque_qual_type != NULL) |
| { |
| bool is_signed; |
| if (ClangASTContext::IsIntegerType (opaque_qual_type, is_signed) |
| || ClangASTContext::IsPointerType (opaque_qual_type)) |
| { |
| runtime = process->GetLanguageRuntime(lldb::eLanguageTypeObjC); |
| } |
| } |
| } |
| |
| if (runtime && runtime->GetObjectDescription(s, *this)) |
| { |
| m_object_desc_str.append (s.GetData()); |
| } |
| |
| if (m_object_desc_str.empty()) |
| return NULL; |
| else |
| return m_object_desc_str.c_str(); |
| } |
| |
| const char * |
| ValueObject::GetValueAsCString () |
| { |
| // If our byte size is zero this is an aggregate type that has children |
| if (ClangASTContext::IsAggregateType (GetClangType()) == false) |
| { |
| if (UpdateValueIfNeeded(true)) |
| { |
| if (m_value_str.empty()) |
| { |
| const Value::ContextType context_type = m_value.GetContextType(); |
| |
| switch (context_type) |
| { |
| case Value::eContextTypeClangType: |
| case Value::eContextTypeLLDBType: |
| case Value::eContextTypeVariable: |
| { |
| clang_type_t clang_type = GetClangType (); |
| if (clang_type) |
| { |
| if (m_format == lldb::eFormatDefault && m_last_value_format) |
| { |
| m_value_str = m_last_value_format->FormatObject(GetSP()); |
| } |
| else |
| { |
| StreamString sstr; |
| Format format = GetFormat(); |
| if (format == eFormatDefault) |
| format = (m_is_bitfield_for_scalar ? eFormatUnsigned : |
| ClangASTType::GetFormat(clang_type)); |
| |
| if (ClangASTType::DumpTypeValue (GetClangAST(), // The clang AST |
| clang_type, // The clang type to display |
| &sstr, |
| format, // Format to display this type with |
| m_data, // Data to extract from |
| 0, // Byte offset into "m_data" |
| GetByteSize(), // Byte size of item in "m_data" |
| GetBitfieldBitSize(), // Bitfield bit size |
| GetBitfieldBitOffset())) // Bitfield bit offset |
| m_value_str.swap(sstr.GetString()); |
| else |
| { |
| m_error.SetErrorStringWithFormat ("unsufficient data for value (only %u of %u bytes available)", |
| m_data.GetByteSize(), |
| GetByteSize()); |
| m_value_str.clear(); |
| } |
| } |
| } |
| } |
| break; |
| |
| case Value::eContextTypeRegisterInfo: |
| { |
| const RegisterInfo *reg_info = m_value.GetRegisterInfo(); |
| if (reg_info) |
| { |
| StreamString reg_sstr; |
| m_data.Dump(®_sstr, 0, reg_info->format, reg_info->byte_size, 1, UINT32_MAX, LLDB_INVALID_ADDRESS, 0, 0); |
| m_value_str.swap(reg_sstr.GetString()); |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| if (!m_value_did_change && m_old_value_valid) |
| { |
| // The value was gotten successfully, so we consider the |
| // value as changed if the value string differs |
| SetValueDidChange (m_old_value_str != m_value_str); |
| } |
| } |
| } |
| if (m_value_str.empty()) |
| return NULL; |
| return m_value_str.c_str(); |
| } |
| |
| // if > 8bytes, 0 is returned. this method should mostly be used |
| // to read address values out of pointers |
| unsigned long long |
| ValueObject::GetValueAsUnsigned() |
| { |
| // If our byte size is zero this is an aggregate type that has children |
| if (ClangASTContext::IsAggregateType (GetClangType()) == false) |
| { |
| if (UpdateValueIfNeeded(true)) |
| { |
| uint32_t offset = 0; |
| return m_data.GetMaxU64(&offset, |
| m_data.GetByteSize()); |
| } |
| } |
| return 0; |
| } |
| |
| bool |
| ValueObject::GetPrintableRepresentation(Stream& s, |
| ValueObjectRepresentationStyle val_obj_display, |
| lldb::Format custom_format) |
| { |
| |
| RefCounter ref(&m_dump_printable_counter); |
| |
| if (custom_format != lldb::eFormatInvalid) |
| SetFormat(custom_format); |
| |
| const char * return_value; |
| std::string alloc_mem; |
| |
| switch(val_obj_display) |
| { |
| case eDisplayValue: |
| return_value = GetValueAsCString(); |
| break; |
| case eDisplaySummary: |
| return_value = GetSummaryAsCString(); |
| break; |
| case eDisplayLanguageSpecific: |
| return_value = GetObjectDescription(); |
| break; |
| case eDisplayLocation: |
| return_value = GetLocationAsCString(); |
| break; |
| case eDisplayChildrenCount: |
| { |
| alloc_mem.resize(512); |
| return_value = &alloc_mem[0]; |
| int count = GetNumChildren(); |
| snprintf((char*)return_value, 512, "%d", count); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| // this code snippet might lead to endless recursion, thus we use a RefCounter here to |
| // check that we are not looping endlessly |
| if (!return_value && (m_dump_printable_counter < 3)) |
| { |
| // try to pick the other choice |
| if (val_obj_display == eDisplayValue) |
| return_value = GetSummaryAsCString(); |
| else if (val_obj_display == eDisplaySummary) |
| { |
| if (ClangASTContext::IsAggregateType (GetClangType()) == true) |
| { |
| // this thing has no value, and it seems to have no summary |
| // some combination of unitialized data and other factors can also |
| // raise this condition, so let's print a nice generic error message |
| return_value = "<no available summary>"; |
| } |
| else |
| return_value = GetValueAsCString(); |
| } |
| } |
| |
| if (return_value) |
| s.PutCString(return_value); |
| else |
| s.PutCString("<no printable representation>"); |
| |
| // we should only return false here if we could not do *anything* |
| // even if we have an error message as output, that's a success |
| // from our callers' perspective, so return true |
| return true; |
| |
| } |
| |
| bool |
| ValueObject::DumpPrintableRepresentation(Stream& s, |
| ValueObjectRepresentationStyle val_obj_display, |
| lldb::Format custom_format) |
| { |
| |
| clang_type_t elem_or_pointee_type; |
| Flags flags(ClangASTContext::GetTypeInfo(GetClangType(), GetClangAST(), &elem_or_pointee_type)); |
| |
| if (flags.AnySet(ClangASTContext::eTypeIsArray | ClangASTContext::eTypeIsPointer) |
| && val_obj_display == ValueObject::eDisplayValue) |
| { |
| // when being asked to get a printable display an array or pointer type directly, |
| // try to "do the right thing" |
| |
| if (IsCStringContainer(true) && |
| (custom_format == lldb::eFormatCString || |
| custom_format == lldb::eFormatCharArray || |
| custom_format == lldb::eFormatChar || |
| custom_format == lldb::eFormatVectorOfChar)) // print char[] & char* directly |
| { |
| Error error; |
| ReadPointedString(s, |
| error, |
| 0, |
| (custom_format == lldb::eFormatVectorOfChar) || |
| (custom_format == lldb::eFormatCharArray)); |
| return !error.Fail(); |
| } |
| |
| if (custom_format == lldb::eFormatEnum) |
| return false; |
| |
| // this only works for arrays, because I have no way to know when |
| // the pointed memory ends, and no special \0 end of data marker |
| if (flags.Test(ClangASTContext::eTypeIsArray)) |
| { |
| if ((custom_format == lldb::eFormatBytes) || |
| (custom_format == lldb::eFormatBytesWithASCII)) |
| { |
| uint32_t count = GetNumChildren(); |
| |
| s << '['; |
| for (uint32_t low = 0; low < count; low++) |
| { |
| |
| if (low) |
| s << ','; |
| |
| ValueObjectSP child = GetChildAtIndex(low,true); |
| if (!child.get()) |
| { |
| s << "<invalid child>"; |
| continue; |
| } |
| child->DumpPrintableRepresentation(s, ValueObject::eDisplayValue, custom_format); |
| } |
| |
| s << ']'; |
| |
| return true; |
| } |
| |
| if ((custom_format == lldb::eFormatVectorOfChar) || |
| (custom_format == lldb::eFormatVectorOfFloat32) || |
| (custom_format == lldb::eFormatVectorOfFloat64) || |
| (custom_format == lldb::eFormatVectorOfSInt16) || |
| (custom_format == lldb::eFormatVectorOfSInt32) || |
| (custom_format == lldb::eFormatVectorOfSInt64) || |
| (custom_format == lldb::eFormatVectorOfSInt8) || |
| (custom_format == lldb::eFormatVectorOfUInt128) || |
| (custom_format == lldb::eFormatVectorOfUInt16) || |
| (custom_format == lldb::eFormatVectorOfUInt32) || |
| (custom_format == lldb::eFormatVectorOfUInt64) || |
| (custom_format == lldb::eFormatVectorOfUInt8)) // arrays of bytes, bytes with ASCII or any vector format should be printed directly |
| { |
| uint32_t count = GetNumChildren(); |
| |
| lldb::Format format = FormatManager::GetSingleItemFormat(custom_format); |
| |
| s << '['; |
| for (uint32_t low = 0; low < count; low++) |
| { |
| |
| if (low) |
| s << ','; |
| |
| ValueObjectSP child = GetChildAtIndex(low,true); |
| if (!child.get()) |
| { |
| s << "<invalid child>"; |
| continue; |
| } |
| child->DumpPrintableRepresentation(s, ValueObject::eDisplayValue, format); |
| } |
| |
| s << ']'; |
| |
| return true; |
| } |
| } |
| |
| if ((custom_format == lldb::eFormatBoolean) || |
| (custom_format == lldb::eFormatBinary) || |
| (custom_format == lldb::eFormatChar) || |
| (custom_format == lldb::eFormatCharPrintable) || |
| (custom_format == lldb::eFormatComplexFloat) || |
| (custom_format == lldb::eFormatDecimal) || |
| (custom_format == lldb::eFormatHex) || |
| (custom_format == lldb::eFormatFloat) || |
| (custom_format == lldb::eFormatOctal) || |
| (custom_format == lldb::eFormatOSType) || |
| (custom_format == lldb::eFormatUnicode16) || |
| (custom_format == lldb::eFormatUnicode32) || |
| (custom_format == lldb::eFormatUnsigned) || |
| (custom_format == lldb::eFormatPointer) || |
| (custom_format == lldb::eFormatComplexInteger) || |
| (custom_format == lldb::eFormatComplex) || |
| (custom_format == lldb::eFormatDefault)) // use the [] operator |
| return false; |
| } |
| bool var_success = GetPrintableRepresentation(s, val_obj_display, custom_format); |
| if (custom_format != eFormatInvalid) |
| SetFormat(eFormatDefault); |
| return var_success; |
| } |
| |
| addr_t |
| ValueObject::GetAddressOf (AddressType &address_type, bool scalar_is_load_address) |
| { |
| if (!UpdateValueIfNeeded(false)) |
| return LLDB_INVALID_ADDRESS; |
| |
| switch (m_value.GetValueType()) |
| { |
| case Value::eValueTypeScalar: |
| if (scalar_is_load_address) |
| { |
| address_type = eAddressTypeLoad; |
| return m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS); |
| } |
| break; |
| |
| case Value::eValueTypeLoadAddress: |
| case Value::eValueTypeFileAddress: |
| case Value::eValueTypeHostAddress: |
| { |
| address_type = m_value.GetValueAddressType (); |
| return m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS); |
| } |
| break; |
| } |
| address_type = eAddressTypeInvalid; |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| addr_t |
| ValueObject::GetPointerValue (AddressType &address_type, bool scalar_is_load_address) |
| { |
| lldb::addr_t address = LLDB_INVALID_ADDRESS; |
| address_type = eAddressTypeInvalid; |
| |
| if (!UpdateValueIfNeeded(false)) |
| return address; |
| |
| switch (m_value.GetValueType()) |
| { |
| case Value::eValueTypeScalar: |
| if (scalar_is_load_address) |
| { |
| address = m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS); |
| address_type = eAddressTypeLoad; |
| } |
| break; |
| |
| case Value::eValueTypeLoadAddress: |
| case Value::eValueTypeFileAddress: |
| case Value::eValueTypeHostAddress: |
| { |
| uint32_t data_offset = 0; |
| address = m_data.GetPointer(&data_offset); |
| address_type = m_value.GetValueAddressType(); |
| if (address_type == eAddressTypeInvalid) |
| address_type = eAddressTypeLoad; |
| } |
| break; |
| } |
| |
| if (m_pointers_point_to_load_addrs) |
| address_type = eAddressTypeLoad; |
| |
| return address; |
| } |
| |
| bool |
| ValueObject::SetValueFromCString (const char *value_str) |
| { |
| // Make sure our value is up to date first so that our location and location |
| // type is valid. |
| if (!UpdateValueIfNeeded(false)) |
| return false; |
| |
| uint32_t count = 0; |
| lldb::Encoding encoding = ClangASTType::GetEncoding (GetClangType(), count); |
| |
| char *end = NULL; |
| const size_t byte_size = GetByteSize(); |
| switch (encoding) |
| { |
| case eEncodingInvalid: |
| return false; |
| |
| case eEncodingUint: |
| if (byte_size > sizeof(unsigned long long)) |
| { |
| return false; |
| } |
| else |
| { |
| unsigned long long ull_val = strtoull(value_str, &end, 0); |
| if (end && *end != '\0') |
| return false; |
| m_value.GetScalar() = ull_val; |
| // Limit the bytes in our m_data appropriately. |
| m_value.GetScalar().GetData (m_data, byte_size); |
| } |
| break; |
| |
| case eEncodingSint: |
| if (byte_size > sizeof(long long)) |
| { |
| return false; |
| } |
| else |
| { |
| long long sll_val = strtoll(value_str, &end, 0); |
| if (end && *end != '\0') |
| return false; |
| m_value.GetScalar() = sll_val; |
| // Limit the bytes in our m_data appropriately. |
| m_value.GetScalar().GetData (m_data, byte_size); |
| } |
| break; |
| |
| case eEncodingIEEE754: |
| { |
| const off_t byte_offset = GetByteOffset(); |
| uint8_t *dst = const_cast<uint8_t *>(m_data.PeekData(byte_offset, byte_size)); |
| if (dst != NULL) |
| { |
| // We are decoding a float into host byte order below, so make |
| // sure m_data knows what it contains. |
| m_data.SetByteOrder(lldb::endian::InlHostByteOrder()); |
| const size_t converted_byte_size = ClangASTContext::ConvertStringToFloatValue ( |
| GetClangAST(), |
| GetClangType(), |
| value_str, |
| dst, |
| byte_size); |
| |
| if (converted_byte_size == byte_size) |
| { |
| } |
| } |
| } |
| break; |
| |
| case eEncodingVector: |
| return false; |
| |
| default: |
| return false; |
| } |
| |
| // If we have made it here the value is in m_data and we should write it |
| // out to the target |
| return Write (); |
| } |
| |
| bool |
| ValueObject::Write () |
| { |
| // Clear the update ID so the next time we try and read the value |
| // we try and read it again. |
| m_update_point.SetNeedsUpdate(); |
| |
| // TODO: when Value has a method to write a value back, call it from here. |
| return false; |
| |
| } |
| |
| lldb::LanguageType |
| ValueObject::GetObjectRuntimeLanguage () |
| { |
| return ClangASTType::GetMinimumLanguage (GetClangAST(), |
| GetClangType()); |
| } |
| |
| void |
| ValueObject::AddSyntheticChild (const ConstString &key, ValueObject *valobj) |
| { |
| m_synthetic_children[key] = valobj; |
| } |
| |
| ValueObjectSP |
| ValueObject::GetSyntheticChild (const ConstString &key) const |
| { |
| ValueObjectSP synthetic_child_sp; |
| std::map<ConstString, ValueObject *>::const_iterator pos = m_synthetic_children.find (key); |
| if (pos != m_synthetic_children.end()) |
| synthetic_child_sp = pos->second->GetSP(); |
| return synthetic_child_sp; |
| } |
| |
| bool |
| ValueObject::IsPointerType () |
| { |
| return ClangASTContext::IsPointerType (GetClangType()); |
| } |
| |
| bool |
| ValueObject::IsArrayType () |
| { |
| return ClangASTContext::IsArrayType (GetClangType()); |
| } |
| |
| bool |
| ValueObject::IsScalarType () |
| { |
| return ClangASTContext::IsScalarType (GetClangType()); |
| } |
| |
| bool |
| ValueObject::IsIntegerType (bool &is_signed) |
| { |
| return ClangASTContext::IsIntegerType (GetClangType(), is_signed); |
| } |
| |
| bool |
| ValueObject::IsPointerOrReferenceType () |
| { |
| return ClangASTContext::IsPointerOrReferenceType (GetClangType()); |
| } |
| |
| bool |
| ValueObject::IsPossibleCPlusPlusDynamicType () |
| { |
| return ClangASTContext::IsPossibleCPlusPlusDynamicType (GetClangAST (), GetClangType()); |
| } |
| |
| bool |
| ValueObject::IsPossibleDynamicType () |
| { |
| return ClangASTContext::IsPossibleDynamicType (GetClangAST (), GetClangType()); |
| } |
| |
| ValueObjectSP |
| ValueObject::GetSyntheticArrayMemberFromPointer (int32_t index, bool can_create) |
| { |
| ValueObjectSP synthetic_child_sp; |
| if (IsPointerType ()) |
| { |
| char index_str[64]; |
| snprintf(index_str, sizeof(index_str), "[%i]", index); |
| ConstString index_const_str(index_str); |
| // Check if we have already created a synthetic array member in this |
| // valid object. If we have we will re-use it. |
| synthetic_child_sp = GetSyntheticChild (index_const_str); |
| if (!synthetic_child_sp) |
| { |
| ValueObject *synthetic_child; |
| // We haven't made a synthetic array member for INDEX yet, so |
| // lets make one and cache it for any future reference. |
| synthetic_child = CreateChildAtIndex(0, true, index); |
| |
| // Cache the value if we got one back... |
| if (synthetic_child) |
| { |
| AddSyntheticChild(index_const_str, synthetic_child); |
| synthetic_child_sp = synthetic_child->GetSP(); |
| synthetic_child_sp->SetName(ConstString(index_str)); |
| synthetic_child_sp->m_is_array_item_for_pointer = true; |
| } |
| } |
| } |
| return synthetic_child_sp; |
| } |
| |
| // This allows you to create an array member using and index |
| // that doesn't not fall in the normal bounds of the array. |
| // Many times structure can be defined as: |
| // struct Collection |
| // { |
| // uint32_t item_count; |
| // Item item_array[0]; |
| // }; |
| // The size of the "item_array" is 1, but many times in practice |
| // there are more items in "item_array". |
| |
| ValueObjectSP |
| ValueObject::GetSyntheticArrayMemberFromArray (int32_t index, bool can_create) |
| { |
| ValueObjectSP synthetic_child_sp; |
| if (IsArrayType ()) |
| { |
| char index_str[64]; |
| snprintf(index_str, sizeof(index_str), "[%i]", index); |
| ConstString index_const_str(index_str); |
| // Check if we have already created a synthetic array member in this |
| // valid object. If we have we will re-use it. |
| synthetic_child_sp = GetSyntheticChild (index_const_str); |
| if (!synthetic_child_sp) |
| { |
| ValueObject *synthetic_child; |
| // We haven't made a synthetic array member for INDEX yet, so |
| // lets make one and cache it for any future reference. |
| synthetic_child = CreateChildAtIndex(0, true, index); |
| |
| // Cache the value if we got one back... |
| if (synthetic_child) |
| { |
| AddSyntheticChild(index_const_str, synthetic_child); |
| synthetic_child_sp = synthetic_child->GetSP(); |
| synthetic_child_sp->SetName(ConstString(index_str)); |
| synthetic_child_sp->m_is_array_item_for_pointer = true; |
| } |
| } |
| } |
| return synthetic_child_sp; |
| } |
| |
| ValueObjectSP |
| ValueObject::GetSyntheticBitFieldChild (uint32_t from, uint32_t to, bool can_create) |
| { |
| ValueObjectSP synthetic_child_sp; |
| if (IsScalarType ()) |
| { |
| char index_str[64]; |
| snprintf(index_str, sizeof(index_str), "[%i-%i]", from, to); |
| ConstString index_const_str(index_str); |
| // Check if we have already created a synthetic array member in this |
| // valid object. If we have we will re-use it. |
| synthetic_child_sp = GetSyntheticChild (index_const_str); |
| if (!synthetic_child_sp) |
| { |
| ValueObjectChild *synthetic_child; |
| // We haven't made a synthetic array member for INDEX yet, so |
| // lets make one and cache it for any future reference. |
| synthetic_child = new ValueObjectChild(*this, |
| GetClangAST(), |
| GetClangType(), |
| index_const_str, |
| GetByteSize(), |
| 0, |
| to-from+1, |
| from, |
| false, |
| false); |
| |
| // Cache the value if we got one back... |
| if (synthetic_child) |
| { |
| AddSyntheticChild(index_const_str, synthetic_child); |
| synthetic_child_sp = synthetic_child->GetSP(); |
| synthetic_child_sp->SetName(ConstString(index_str)); |
| synthetic_child_sp->m_is_bitfield_for_scalar = true; |
| } |
| } |
| } |
| return synthetic_child_sp; |
| } |
| |
| lldb::ValueObjectSP |
| ValueObject::GetSyntheticChildAtOffset(uint32_t offset, const ClangASTType& type, bool can_create) |
| { |
| |
| ValueObjectSP synthetic_child_sp; |
| |
| char name_str[64]; |
| snprintf(name_str, sizeof(name_str), "@%i", offset); |
| ConstString name_const_str(name_str); |
| |
| // Check if we have already created a synthetic array member in this |
| // valid object. If we have we will re-use it. |
| synthetic_child_sp = GetSyntheticChild (name_const_str); |
| |
| if (synthetic_child_sp.get()) |
| return synthetic_child_sp; |
| |
| if (!can_create) |
| return lldb::ValueObjectSP(); |
| |
| ValueObjectChild *synthetic_child = new ValueObjectChild(*this, |
| type.GetASTContext(), |
| type.GetOpaqueQualType(), |
| name_const_str, |
| type.GetTypeByteSize(), |
| offset, |
| 0, |
| 0, |
| false, |
| false); |
| if (synthetic_child) |
| { |
| AddSyntheticChild(name_const_str, synthetic_child); |
| synthetic_child_sp = synthetic_child->GetSP(); |
| synthetic_child_sp->SetName(name_const_str); |
| synthetic_child_sp->m_is_child_at_offset = true; |
| } |
| return synthetic_child_sp; |
| } |
| |
| // your expression path needs to have a leading . or -> |
| // (unless it somehow "looks like" an array, in which case it has |
| // a leading [ symbol). while the [ is meaningful and should be shown |
| // to the user, . and -> are just parser design, but by no means |
| // added information for the user.. strip them off |
| static const char* |
| SkipLeadingExpressionPathSeparators(const char* expression) |
| { |
| if (!expression || !expression[0]) |
| return expression; |
| if (expression[0] == '.') |
| return expression+1; |
| if (expression[0] == '-' && expression[1] == '>') |
| return expression+2; |
| return expression; |
| } |
| |
| lldb::ValueObjectSP |
| ValueObject::GetSyntheticExpressionPathChild(const char* expression, bool can_create) |
| { |
| ValueObjectSP synthetic_child_sp; |
| ConstString name_const_string(expression); |
| // Check if we have already created a synthetic array member in this |
| // valid object. If we have we will re-use it. |
| synthetic_child_sp = GetSyntheticChild (name_const_string); |
| if (!synthetic_child_sp) |
| { |
| // We haven't made a synthetic array member for expression yet, so |
| // lets make one and cache it for any future reference. |
| synthetic_child_sp = GetValueForExpressionPath(expression); |
| |
| // Cache the value if we got one back... |
| if (synthetic_child_sp.get()) |
| { |
| AddSyntheticChild(name_const_string, synthetic_child_sp.get()); |
| synthetic_child_sp->SetName(ConstString(SkipLeadingExpressionPathSeparators(expression))); |
| synthetic_child_sp->m_is_expression_path_child = true; |
| } |
| } |
| return synthetic_child_sp; |
| } |
| |
| void |
| ValueObject::CalculateSyntheticValue (lldb::SyntheticValueType use_synthetic) |
| { |
| if (use_synthetic == lldb::eNoSyntheticFilter) |
| return; |
| |
| UpdateFormatsIfNeeded(m_last_format_mgr_dynamic); |
| |
| if (m_last_synthetic_filter.get() == NULL) |
| return; |
| |
| if (m_synthetic_value == NULL) |
| m_synthetic_value = new ValueObjectSynthetic(*this, m_last_synthetic_filter); |
| |
| } |
| |
| void |
| ValueObject::CalculateDynamicValue (lldb::DynamicValueType use_dynamic) |
| { |
| if (use_dynamic == lldb::eNoDynamicValues) |
| return; |
| |
| if (!m_dynamic_value && !IsDynamic()) |
| { |
| Process *process = m_update_point.GetProcessSP().get(); |
| bool worth_having_dynamic_value = false; |
| |
| |
| // FIXME: Process should have some kind of "map over Runtimes" so we don't have to |
| // hard code this everywhere. |
| lldb::LanguageType known_type = GetObjectRuntimeLanguage(); |
| if (known_type != lldb::eLanguageTypeUnknown && known_type != lldb::eLanguageTypeC) |
| { |
| LanguageRuntime *runtime = process->GetLanguageRuntime (known_type); |
| if (runtime) |
| worth_having_dynamic_value = runtime->CouldHaveDynamicValue(*this); |
| } |
| else |
| { |
| LanguageRuntime *cpp_runtime = process->GetLanguageRuntime (lldb::eLanguageTypeC_plus_plus); |
| if (cpp_runtime) |
| worth_having_dynamic_value = cpp_runtime->CouldHaveDynamicValue(*this); |
| |
| if (!worth_having_dynamic_value) |
| { |
| LanguageRuntime *objc_runtime = process->GetLanguageRuntime (lldb::eLanguageTypeObjC); |
| if (objc_runtime) |
| worth_having_dynamic_value = objc_runtime->CouldHaveDynamicValue(*this); |
| } |
| } |
| |
| if (worth_having_dynamic_value) |
| m_dynamic_value = new ValueObjectDynamicValue (*this, use_dynamic); |
| |
| // if (worth_having_dynamic_value) |
| // printf ("Adding dynamic value %s (%p) to (%p) - manager %p.\n", m_name.GetCString(), m_dynamic_value, this, m_manager); |
| |
| } |
| } |
| |
| ValueObjectSP |
| ValueObject::GetDynamicValue (DynamicValueType use_dynamic) |
| { |
| if (use_dynamic == lldb::eNoDynamicValues) |
| return ValueObjectSP(); |
| |
| if (!IsDynamic() && m_dynamic_value == NULL) |
| { |
| CalculateDynamicValue(use_dynamic); |
| } |
| if (m_dynamic_value) |
| return m_dynamic_value->GetSP(); |
| else |
| return ValueObjectSP(); |
| } |
| |
| // GetDynamicValue() returns a NULL SharedPointer if the object is not dynamic |
| // or we do not really want a dynamic VO. this method instead returns this object |
| // itself when making it synthetic has no meaning. this makes it much simpler |
| // to replace the SyntheticValue for the ValueObject |
| ValueObjectSP |
| ValueObject::GetSyntheticValue (SyntheticValueType use_synthetic) |
| { |
| if (use_synthetic == lldb::eNoSyntheticFilter) |
| return GetSP(); |
| |
| UpdateFormatsIfNeeded(m_last_format_mgr_dynamic); |
| |
| if (m_last_synthetic_filter.get() == NULL) |
| return GetSP(); |
| |
| CalculateSyntheticValue(use_synthetic); |
| |
| if (m_synthetic_value) |
| return m_synthetic_value->GetSP(); |
| else |
| return GetSP(); |
| } |
| |
| bool |
| ValueObject::HasSyntheticValue() |
| { |
| UpdateFormatsIfNeeded(m_last_format_mgr_dynamic); |
| |
| if (m_last_synthetic_filter.get() == NULL) |
| return false; |
| |
| CalculateSyntheticValue(lldb::eUseSyntheticFilter); |
| |
| if (m_synthetic_value) |
| return true; |
| else |
| return false; |
| } |
| |
| bool |
| ValueObject::GetBaseClassPath (Stream &s) |
| { |
| if (IsBaseClass()) |
| { |
| bool parent_had_base_class = GetParent() && GetParent()->GetBaseClassPath (s); |
| clang_type_t clang_type = GetClangType(); |
| std::string cxx_class_name; |
| bool this_had_base_class = ClangASTContext::GetCXXClassName (clang_type, cxx_class_name); |
| if (this_had_base_class) |
| { |
| if (parent_had_base_class) |
| s.PutCString("::"); |
| s.PutCString(cxx_class_name.c_str()); |
| } |
| return parent_had_base_class || this_had_base_class; |
| } |
| return false; |
| } |
| |
| |
| ValueObject * |
| ValueObject::GetNonBaseClassParent() |
| { |
| if (GetParent()) |
| { |
| if (GetParent()->IsBaseClass()) |
| return GetParent()->GetNonBaseClassParent(); |
| else |
| return GetParent(); |
| } |
| return NULL; |
| } |
| |
| void |
| ValueObject::GetExpressionPath (Stream &s, bool qualify_cxx_base_classes, GetExpressionPathFormat epformat) |
| { |
| const bool is_deref_of_parent = IsDereferenceOfParent (); |
| |
| if (is_deref_of_parent && epformat == eDereferencePointers) { |
| // this is the original format of GetExpressionPath() producing code like *(a_ptr).memberName, which is entirely |
| // fine, until you put this into StackFrame::GetValueForVariableExpressionPath() which prefers to see a_ptr->memberName. |
| // the eHonorPointers mode is meant to produce strings in this latter format |
| s.PutCString("*("); |
| } |
| |
| ValueObject* parent = GetParent(); |
| |
| if (parent) |
| parent->GetExpressionPath (s, qualify_cxx_base_classes, epformat); |
| |
| // if we are a deref_of_parent just because we are synthetic array |
| // members made up to allow ptr[%d] syntax to work in variable |
| // printing, then add our name ([%d]) to the expression path |
| if (m_is_array_item_for_pointer && epformat == eHonorPointers) |
| s.PutCString(m_name.AsCString()); |
| |
| if (!IsBaseClass()) |
| { |
| if (!is_deref_of_parent) |
| { |
| ValueObject *non_base_class_parent = GetNonBaseClassParent(); |
| if (non_base_class_parent) |
| { |
| clang_type_t non_base_class_parent_clang_type = non_base_class_parent->GetClangType(); |
| if (non_base_class_parent_clang_type) |
| { |
| const uint32_t non_base_class_parent_type_info = ClangASTContext::GetTypeInfo (non_base_class_parent_clang_type, NULL, NULL); |
| |
| if (parent && parent->IsDereferenceOfParent() && epformat == eHonorPointers) |
| { |
| s.PutCString("->"); |
| } |
| else |
| { |
| if (non_base_class_parent_type_info & ClangASTContext::eTypeIsPointer) |
| { |
| s.PutCString("->"); |
| } |
| else if ((non_base_class_parent_type_info & ClangASTContext::eTypeHasChildren) && |
| !(non_base_class_parent_type_info & ClangASTContext::eTypeIsArray)) |
| { |
| s.PutChar('.'); |
| } |
| } |
| } |
| } |
| |
| const char *name = GetName().GetCString(); |
| if (name) |
| { |
| if (qualify_cxx_base_classes) |
| { |
| if (GetBaseClassPath (s)) |
| s.PutCString("::"); |
| } |
| s.PutCString(name); |
| } |
| } |
| } |
| |
| if (is_deref_of_parent && epformat == eDereferencePointers) { |
| s.PutChar(')'); |
| } |
| } |
| |
| lldb::ValueObjectSP |
| ValueObject::GetValueForExpressionPath(const char* expression, |
| const char** first_unparsed, |
| ExpressionPathScanEndReason* reason_to_stop, |
| ExpressionPathEndResultType* final_value_type, |
| const GetValueForExpressionPathOptions& options, |
| ExpressionPathAftermath* final_task_on_target) |
| { |
| |
| const char* dummy_first_unparsed; |
| ExpressionPathScanEndReason dummy_reason_to_stop; |
| ExpressionPathEndResultType dummy_final_value_type; |
| ExpressionPathAftermath dummy_final_task_on_target = ValueObject::eNothing; |
| |
| ValueObjectSP ret_val = GetValueForExpressionPath_Impl(expression, |
| first_unparsed ? first_unparsed : &dummy_first_unparsed, |
| reason_to_stop ? reason_to_stop : &dummy_reason_to_stop, |
| final_value_type ? final_value_type : &dummy_final_value_type, |
| options, |
| final_task_on_target ? final_task_on_target : &dummy_final_task_on_target); |
| |
| if (!final_task_on_target || *final_task_on_target == ValueObject::eNothing) |
| { |
| return ret_val; |
| } |
| if (ret_val.get() && *final_value_type == ePlain) // I can only deref and takeaddress of plain objects |
| { |
| if (*final_task_on_target == ValueObject::eDereference) |
| { |
| Error error; |
| ValueObjectSP final_value = ret_val->Dereference(error); |
| if (error.Fail() || !final_value.get()) |
| { |
| *reason_to_stop = ValueObject::eDereferencingFailed; |
| *final_value_type = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else |
| { |
| *final_task_on_target = ValueObject::eNothing; |
| return final_value; |
| } |
| } |
| if (*final_task_on_target == ValueObject::eTakeAddress) |
| { |
| Error error; |
| ValueObjectSP final_value = ret_val->AddressOf(error); |
| if (error.Fail() || !final_value.get()) |
| { |
| *reason_to_stop = ValueObject::eTakingAddressFailed; |
| *final_value_type = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else |
| { |
| *final_task_on_target = ValueObject::eNothing; |
| return final_value; |
| } |
| } |
| } |
| return ret_val; // final_task_on_target will still have its original value, so you know I did not do it |
| } |
| |
| int |
| ValueObject::GetValuesForExpressionPath(const char* expression, |
| lldb::ValueObjectListSP& list, |
| const char** first_unparsed, |
| ExpressionPathScanEndReason* reason_to_stop, |
| ExpressionPathEndResultType* final_value_type, |
| const GetValueForExpressionPathOptions& options, |
| ExpressionPathAftermath* final_task_on_target) |
| { |
| const char* dummy_first_unparsed; |
| ExpressionPathScanEndReason dummy_reason_to_stop; |
| ExpressionPathEndResultType dummy_final_value_type; |
| ExpressionPathAftermath dummy_final_task_on_target = ValueObject::eNothing; |
| |
| ValueObjectSP ret_val = GetValueForExpressionPath_Impl(expression, |
| first_unparsed ? first_unparsed : &dummy_first_unparsed, |
| reason_to_stop ? reason_to_stop : &dummy_reason_to_stop, |
| final_value_type ? final_value_type : &dummy_final_value_type, |
| options, |
| final_task_on_target ? final_task_on_target : &dummy_final_task_on_target); |
| |
| if (!ret_val.get()) // if there are errors, I add nothing to the list |
| return 0; |
| |
| if (*reason_to_stop != eArrayRangeOperatorMet) |
| { |
| // I need not expand a range, just post-process the final value and return |
| if (!final_task_on_target || *final_task_on_target == ValueObject::eNothing) |
| { |
| list->Append(ret_val); |
| return 1; |
| } |
| if (ret_val.get() && *final_value_type == ePlain) // I can only deref and takeaddress of plain objects |
| { |
| if (*final_task_on_target == ValueObject::eDereference) |
| { |
| Error error; |
| ValueObjectSP final_value = ret_val->Dereference(error); |
| if (error.Fail() || !final_value.get()) |
| { |
| *reason_to_stop = ValueObject::eDereferencingFailed; |
| *final_value_type = ValueObject::eInvalid; |
| return 0; |
| } |
| else |
| { |
| *final_task_on_target = ValueObject::eNothing; |
| list->Append(final_value); |
| return 1; |
| } |
| } |
| if (*final_task_on_target == ValueObject::eTakeAddress) |
| { |
| Error error; |
| ValueObjectSP final_value = ret_val->AddressOf(error); |
| if (error.Fail() || !final_value.get()) |
| { |
| *reason_to_stop = ValueObject::eTakingAddressFailed; |
| *final_value_type = ValueObject::eInvalid; |
| return 0; |
| } |
| else |
| { |
| *final_task_on_target = ValueObject::eNothing; |
| list->Append(final_value); |
| return 1; |
| } |
| } |
| } |
| } |
| else |
| { |
| return ExpandArraySliceExpression(first_unparsed ? *first_unparsed : dummy_first_unparsed, |
| first_unparsed ? first_unparsed : &dummy_first_unparsed, |
| ret_val, |
| list, |
| reason_to_stop ? reason_to_stop : &dummy_reason_to_stop, |
| final_value_type ? final_value_type : &dummy_final_value_type, |
| options, |
| final_task_on_target ? final_task_on_target : &dummy_final_task_on_target); |
| } |
| // in any non-covered case, just do the obviously right thing |
| list->Append(ret_val); |
| return 1; |
| } |
| |
| lldb::ValueObjectSP |
| ValueObject::GetValueForExpressionPath_Impl(const char* expression_cstr, |
| const char** first_unparsed, |
| ExpressionPathScanEndReason* reason_to_stop, |
| ExpressionPathEndResultType* final_result, |
| const GetValueForExpressionPathOptions& options, |
| ExpressionPathAftermath* what_next) |
| { |
| ValueObjectSP root = GetSP(); |
| |
| if (!root.get()) |
| return ValueObjectSP(); |
| |
| *first_unparsed = expression_cstr; |
| |
| while (true) |
| { |
| |
| const char* expression_cstr = *first_unparsed; // hide the top level expression_cstr |
| |
| lldb::clang_type_t root_clang_type = root->GetClangType(); |
| lldb::clang_type_t pointee_clang_type; |
| Flags root_clang_type_info,pointee_clang_type_info; |
| |
| root_clang_type_info = Flags(ClangASTContext::GetTypeInfo(root_clang_type, GetClangAST(), &pointee_clang_type)); |
| if (pointee_clang_type) |
| pointee_clang_type_info = Flags(ClangASTContext::GetTypeInfo(pointee_clang_type, GetClangAST(), NULL)); |
| |
| if (!expression_cstr || *expression_cstr == '\0') |
| { |
| *reason_to_stop = ValueObject::eEndOfString; |
| return root; |
| } |
| |
| switch (*expression_cstr) |
| { |
| case '-': |
| { |
| if (options.m_check_dot_vs_arrow_syntax && |
| root_clang_type_info.Test(ClangASTContext::eTypeIsPointer) ) // if you are trying to use -> on a non-pointer and I must catch the error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eArrowInsteadOfDot; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| if (root_clang_type_info.Test(ClangASTContext::eTypeIsObjC) && // if yo are trying to extract an ObjC IVar when this is forbidden |
| root_clang_type_info.Test(ClangASTContext::eTypeIsPointer) && |
| options.m_no_fragile_ivar) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eFragileIVarNotAllowed; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| if (expression_cstr[1] != '>') |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| expression_cstr++; // skip the - |
| } |
| case '.': // or fallthrough from -> |
| { |
| if (options.m_check_dot_vs_arrow_syntax && *expression_cstr == '.' && |
| root_clang_type_info.Test(ClangASTContext::eTypeIsPointer)) // if you are trying to use . on a pointer and I must catch the error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eDotInsteadOfArrow; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| expression_cstr++; // skip . |
| const char *next_separator = strpbrk(expression_cstr+1,"-.["); |
| ConstString child_name; |
| if (!next_separator) // if no other separator just expand this last layer |
| { |
| child_name.SetCString (expression_cstr); |
| root = root->GetChildMemberWithName(child_name, true); |
| if (root.get()) // we know we are done, so just return |
| { |
| *first_unparsed = '\0'; |
| *reason_to_stop = ValueObject::eEndOfString; |
| *final_result = ValueObject::ePlain; |
| return root; |
| } |
| else |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| else // other layers do expand |
| { |
| child_name.SetCStringWithLength(expression_cstr, next_separator - expression_cstr); |
| root = root->GetChildMemberWithName(child_name, true); |
| if (root.get()) // store the new root and move on |
| { |
| *first_unparsed = next_separator; |
| *final_result = ValueObject::ePlain; |
| continue; |
| } |
| else |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| break; |
| } |
| case '[': |
| { |
| if (!root_clang_type_info.Test(ClangASTContext::eTypeIsArray) && !root_clang_type_info.Test(ClangASTContext::eTypeIsPointer)) // if this is not a T[] nor a T* |
| { |
| if (!root_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) // if this is not even a scalar... |
| { |
| if (options.m_no_synthetic_children) // ...only chance left is synthetic |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eRangeOperatorInvalid; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| else if (!options.m_allow_bitfields_syntax) // if this is a scalar, check that we can expand bitfields |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eRangeOperatorNotAllowed; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| if (*(expression_cstr+1) == ']') // if this is an unbounded range it only works for arrays |
| { |
| if (!root_clang_type_info.Test(ClangASTContext::eTypeIsArray)) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eEmptyRangeNotAllowed; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else // even if something follows, we cannot expand unbounded ranges, just let the caller do it |
| { |
| *first_unparsed = expression_cstr+2; |
| *reason_to_stop = ValueObject::eArrayRangeOperatorMet; |
| *final_result = ValueObject::eUnboundedRange; |
| return root; |
| } |
| } |
| const char *separator_position = ::strchr(expression_cstr+1,'-'); |
| const char *close_bracket_position = ::strchr(expression_cstr+1,']'); |
| if (!close_bracket_position) // if there is no ], this is a syntax error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| if (!separator_position || separator_position > close_bracket_position) // if no separator, this is either [] or [N] |
| { |
| char *end = NULL; |
| unsigned long index = ::strtoul (expression_cstr+1, &end, 0); |
| if (!end || end != close_bracket_position) // if something weird is in our way return an error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| if (end - expression_cstr == 1) // if this is [], only return a valid value for arrays |
| { |
| if (root_clang_type_info.Test(ClangASTContext::eTypeIsArray)) |
| { |
| *first_unparsed = expression_cstr+2; |
| *reason_to_stop = ValueObject::eArrayRangeOperatorMet; |
| *final_result = ValueObject::eUnboundedRange; |
| return root; |
| } |
| else |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eEmptyRangeNotAllowed; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| // from here on we do have a valid index |
| if (root_clang_type_info.Test(ClangASTContext::eTypeIsArray)) |
| { |
| ValueObjectSP child_valobj_sp = root->GetChildAtIndex(index, true); |
| if (!child_valobj_sp) |
| child_valobj_sp = root->GetSyntheticArrayMemberFromArray(index, true); |
| if (!child_valobj_sp) |
| if (root->HasSyntheticValue() && root->GetSyntheticValue(lldb::eUseSyntheticFilter)->GetNumChildren() > index) |
| child_valobj_sp = root->GetSyntheticValue(lldb::eUseSyntheticFilter)->GetChildAtIndex(index, true); |
| if (child_valobj_sp) |
| { |
| root = child_valobj_sp; |
| *first_unparsed = end+1; // skip ] |
| *final_result = ValueObject::ePlain; |
| continue; |
| } |
| else |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| else if (root_clang_type_info.Test(ClangASTContext::eTypeIsPointer)) |
| { |
| if (*what_next == ValueObject::eDereference && // if this is a ptr-to-scalar, I am accessing it by index and I would have deref'ed anyway, then do it now and use this as a bitfield |
| pointee_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) |
| { |
| Error error; |
| root = root->Dereference(error); |
| if (error.Fail() || !root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eDereferencingFailed; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else |
| { |
| *what_next = eNothing; |
| continue; |
| } |
| } |
| else |
| { |
| if (ClangASTType::GetMinimumLanguage(root->GetClangAST(), |
| root->GetClangType()) == lldb::eLanguageTypeObjC |
| && |
| ClangASTContext::IsPointerType(ClangASTType::GetPointeeType(root->GetClangType())) == false |
| && |
| root->HasSyntheticValue() |
| && |
| options.m_no_synthetic_children == false) |
| { |
| root = root->GetSyntheticValue(lldb::eUseSyntheticFilter)->GetChildAtIndex(index, true); |
| } |
| else |
| root = root->GetSyntheticArrayMemberFromPointer(index, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else |
| { |
| *first_unparsed = end+1; // skip ] |
| *final_result = ValueObject::ePlain; |
| continue; |
| } |
| } |
| } |
| else if (ClangASTContext::IsScalarType(root_clang_type)) |
| { |
| root = root->GetSyntheticBitFieldChild(index, index, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else // we do not know how to expand members of bitfields, so we just return and let the caller do any further processing |
| { |
| *first_unparsed = end+1; // skip ] |
| *reason_to_stop = ValueObject::eBitfieldRangeOperatorMet; |
| *final_result = ValueObject::eBitfield; |
| return root; |
| } |
| } |
| else if (root->HasSyntheticValue() && options.m_no_synthetic_children) |
| { |
| root = root->GetSyntheticValue(lldb::eUseSyntheticFilter)->GetChildAtIndex(index, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| else |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| } |
| else // we have a low and a high index |
| { |
| char *end = NULL; |
| unsigned long index_lower = ::strtoul (expression_cstr+1, &end, 0); |
| if (!end || end != separator_position) // if something weird is in our way return an error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| unsigned long index_higher = ::strtoul (separator_position+1, &end, 0); |
| if (!end || end != close_bracket_position) // if something weird is in our way return an error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| if (index_lower > index_higher) // swap indices if required |
| { |
| unsigned long temp = index_lower; |
| index_lower = index_higher; |
| index_higher = temp; |
| } |
| if (root_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) // expansion only works for scalars |
| { |
| root = root->GetSyntheticBitFieldChild(index_lower, index_higher, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else |
| { |
| *first_unparsed = end+1; // skip ] |
| *reason_to_stop = ValueObject::eBitfieldRangeOperatorMet; |
| *final_result = ValueObject::eBitfield; |
| return root; |
| } |
| } |
| else if (root_clang_type_info.Test(ClangASTContext::eTypeIsPointer) && // if this is a ptr-to-scalar, I am accessing it by index and I would have deref'ed anyway, then do it now and use this as a bitfield |
| *what_next == ValueObject::eDereference && |
| pointee_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) |
| { |
| Error error; |
| root = root->Dereference(error); |
| if (error.Fail() || !root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eDereferencingFailed; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| } |
| else |
| { |
| *what_next = ValueObject::eNothing; |
| continue; |
| } |
| } |
| else |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eArrayRangeOperatorMet; |
| *final_result = ValueObject::eBoundedRange; |
| return root; |
| } |
| } |
| break; |
| } |
| default: // some non-separator is in the way |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return ValueObjectSP(); |
| break; |
| } |
| } |
| } |
| } |
| |
| int |
| ValueObject::ExpandArraySliceExpression(const char* expression_cstr, |
| const char** first_unparsed, |
| lldb::ValueObjectSP root, |
| lldb::ValueObjectListSP& list, |
| ExpressionPathScanEndReason* reason_to_stop, |
| ExpressionPathEndResultType* final_result, |
| const GetValueForExpressionPathOptions& options, |
| ExpressionPathAftermath* what_next) |
| { |
| if (!root.get()) |
| return 0; |
| |
| *first_unparsed = expression_cstr; |
| |
| while (true) |
| { |
| |
| const char* expression_cstr = *first_unparsed; // hide the top level expression_cstr |
| |
| lldb::clang_type_t root_clang_type = root->GetClangType(); |
| lldb::clang_type_t pointee_clang_type; |
| Flags root_clang_type_info,pointee_clang_type_info; |
| |
| root_clang_type_info = Flags(ClangASTContext::GetTypeInfo(root_clang_type, GetClangAST(), &pointee_clang_type)); |
| if (pointee_clang_type) |
| pointee_clang_type_info = Flags(ClangASTContext::GetTypeInfo(pointee_clang_type, GetClangAST(), NULL)); |
| |
| if (!expression_cstr || *expression_cstr == '\0') |
| { |
| *reason_to_stop = ValueObject::eEndOfString; |
| list->Append(root); |
| return 1; |
| } |
| |
| switch (*expression_cstr) |
| { |
| case '[': |
| { |
| if (!root_clang_type_info.Test(ClangASTContext::eTypeIsArray) && !root_clang_type_info.Test(ClangASTContext::eTypeIsPointer)) // if this is not a T[] nor a T* |
| { |
| if (!root_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) // if this is not even a scalar, this syntax is just plain wrong! |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eRangeOperatorInvalid; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else if (!options.m_allow_bitfields_syntax) // if this is a scalar, check that we can expand bitfields |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eRangeOperatorNotAllowed; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| } |
| if (*(expression_cstr+1) == ']') // if this is an unbounded range it only works for arrays |
| { |
| if (!root_clang_type_info.Test(ClangASTContext::eTypeIsArray)) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eEmptyRangeNotAllowed; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else // expand this into list |
| { |
| int max_index = root->GetNumChildren() - 1; |
| for (int index = 0; index < max_index; index++) |
| { |
| ValueObjectSP child = |
| root->GetChildAtIndex(index, true); |
| list->Append(child); |
| } |
| *first_unparsed = expression_cstr+2; |
| *reason_to_stop = ValueObject::eRangeOperatorExpanded; |
| *final_result = ValueObject::eValueObjectList; |
| return max_index; // tell me number of items I added to the VOList |
| } |
| } |
| const char *separator_position = ::strchr(expression_cstr+1,'-'); |
| const char *close_bracket_position = ::strchr(expression_cstr+1,']'); |
| if (!close_bracket_position) // if there is no ], this is a syntax error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| if (!separator_position || separator_position > close_bracket_position) // if no separator, this is either [] or [N] |
| { |
| char *end = NULL; |
| unsigned long index = ::strtoul (expression_cstr+1, &end, 0); |
| if (!end || end != close_bracket_position) // if something weird is in our way return an error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| if (end - expression_cstr == 1) // if this is [], only return a valid value for arrays |
| { |
| if (root_clang_type_info.Test(ClangASTContext::eTypeIsArray)) |
| { |
| int max_index = root->GetNumChildren() - 1; |
| for (int index = 0; index < max_index; index++) |
| { |
| ValueObjectSP child = |
| root->GetChildAtIndex(index, true); |
| list->Append(child); |
| } |
| *first_unparsed = expression_cstr+2; |
| *reason_to_stop = ValueObject::eRangeOperatorExpanded; |
| *final_result = ValueObject::eValueObjectList; |
| return max_index; // tell me number of items I added to the VOList |
| } |
| else |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eEmptyRangeNotAllowed; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| } |
| // from here on we do have a valid index |
| if (root_clang_type_info.Test(ClangASTContext::eTypeIsArray)) |
| { |
| root = root->GetChildAtIndex(index, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else |
| { |
| list->Append(root); |
| *first_unparsed = end+1; // skip ] |
| *reason_to_stop = ValueObject::eRangeOperatorExpanded; |
| *final_result = ValueObject::eValueObjectList; |
| return 1; |
| } |
| } |
| else if (root_clang_type_info.Test(ClangASTContext::eTypeIsPointer)) |
| { |
| if (*what_next == ValueObject::eDereference && // if this is a ptr-to-scalar, I am accessing it by index and I would have deref'ed anyway, then do it now and use this as a bitfield |
| pointee_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) |
| { |
| Error error; |
| root = root->Dereference(error); |
| if (error.Fail() || !root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eDereferencingFailed; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else |
| { |
| *what_next = eNothing; |
| continue; |
| } |
| } |
| else |
| { |
| root = root->GetSyntheticArrayMemberFromPointer(index, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else |
| { |
| list->Append(root); |
| *first_unparsed = end+1; // skip ] |
| *reason_to_stop = ValueObject::eRangeOperatorExpanded; |
| *final_result = ValueObject::eValueObjectList; |
| return 1; |
| } |
| } |
| } |
| else /*if (ClangASTContext::IsScalarType(root_clang_type))*/ |
| { |
| root = root->GetSyntheticBitFieldChild(index, index, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else // we do not know how to expand members of bitfields, so we just return and let the caller do any further processing |
| { |
| list->Append(root); |
| *first_unparsed = end+1; // skip ] |
| *reason_to_stop = ValueObject::eRangeOperatorExpanded; |
| *final_result = ValueObject::eValueObjectList; |
| return 1; |
| } |
| } |
| } |
| else // we have a low and a high index |
| { |
| char *end = NULL; |
| unsigned long index_lower = ::strtoul (expression_cstr+1, &end, 0); |
| if (!end || end != separator_position) // if something weird is in our way return an error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| unsigned long index_higher = ::strtoul (separator_position+1, &end, 0); |
| if (!end || end != close_bracket_position) // if something weird is in our way return an error |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| if (index_lower > index_higher) // swap indices if required |
| { |
| unsigned long temp = index_lower; |
| index_lower = index_higher; |
| index_higher = temp; |
| } |
| if (root_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) // expansion only works for scalars |
| { |
| root = root->GetSyntheticBitFieldChild(index_lower, index_higher, true); |
| if (!root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eNoSuchChild; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else |
| { |
| list->Append(root); |
| *first_unparsed = end+1; // skip ] |
| *reason_to_stop = ValueObject::eRangeOperatorExpanded; |
| *final_result = ValueObject::eValueObjectList; |
| return 1; |
| } |
| } |
| else if (root_clang_type_info.Test(ClangASTContext::eTypeIsPointer) && // if this is a ptr-to-scalar, I am accessing it by index and I would have deref'ed anyway, then do it now and use this as a bitfield |
| *what_next == ValueObject::eDereference && |
| pointee_clang_type_info.Test(ClangASTContext::eTypeIsScalar)) |
| { |
| Error error; |
| root = root->Dereference(error); |
| if (error.Fail() || !root.get()) |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eDereferencingFailed; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| } |
| else |
| { |
| *what_next = ValueObject::eNothing; |
| continue; |
| } |
| } |
| else |
| { |
| for (unsigned long index = index_lower; |
| index <= index_higher; index++) |
| { |
| ValueObjectSP child = |
| root->GetChildAtIndex(index, true); |
| list->Append(child); |
| } |
| *first_unparsed = end+1; |
| *reason_to_stop = ValueObject::eRangeOperatorExpanded; |
| *final_result = ValueObject::eValueObjectList; |
| return index_higher-index_lower+1; // tell me number of items I added to the VOList |
| } |
| } |
| break; |
| } |
| default: // some non-[ separator, or something entirely wrong, is in the way |
| { |
| *first_unparsed = expression_cstr; |
| *reason_to_stop = ValueObject::eUnexpectedSymbol; |
| *final_result = ValueObject::eInvalid; |
| return 0; |
| break; |
| } |
| } |
| } |
| } |
| |
| void |
| ValueObject::DumpValueObject |
| ( |
| Stream &s, |
| ValueObject *valobj, |
| const char *root_valobj_name, |
| uint32_t ptr_depth, |
| uint32_t curr_depth, |
| uint32_t max_depth, |
| bool show_types, |
| bool show_location, |
| bool use_objc, |
| lldb::DynamicValueType use_dynamic, |
| bool use_synth, |
| bool scope_already_checked, |
| bool flat_output, |
| uint32_t omit_summary_depth |
| ) |
| { |
| if (valobj) |
| { |
| bool update_success = valobj->UpdateValueIfNeeded (use_dynamic, true); |
| |
| if (update_success && use_dynamic != lldb::eNoDynamicValues) |
| { |
| ValueObject *dynamic_value = valobj->GetDynamicValue(use_dynamic).get(); |
| if (dynamic_value) |
| valobj = dynamic_value; |
| } |
| |
| clang_type_t clang_type = valobj->GetClangType(); |
| |
| const Flags type_flags (ClangASTContext::GetTypeInfo (clang_type, NULL, NULL)); |
| const char *err_cstr = NULL; |
| const bool has_children = type_flags.Test (ClangASTContext::eTypeHasChildren); |
| const bool has_value = type_flags.Test (ClangASTContext::eTypeHasValue); |
| |
| const bool print_valobj = flat_output == false || has_value; |
| |
| if (print_valobj) |
| { |
| if (show_location) |
| { |
| s.Printf("%s: ", valobj->GetLocationAsCString()); |
| } |
| |
| s.Indent(); |
| |
| // Always show the type for the top level items. |
| if (show_types || (curr_depth == 0 && !flat_output)) |
| { |
| const char* typeName = valobj->GetTypeName().AsCString("<invalid type>"); |
| s.Printf("(%s", typeName); |
| // only show dynamic types if the user really wants to see types |
| if (show_types && use_dynamic != lldb::eNoDynamicValues && |
| (/*strstr(typeName, "id") == typeName ||*/ |
| ClangASTType::GetMinimumLanguage(valobj->GetClangAST(), valobj->GetClangType()) == lldb::eLanguageTypeObjC)) |
| { |
| Process* process = valobj->GetUpdatePoint().GetProcessSP().get(); |
| if (process == NULL) |
| s.Printf(", dynamic type: unknown) "); |
| else |
| { |
| ObjCLanguageRuntime *runtime = process->GetObjCLanguageRuntime(); |
| if (runtime == NULL) |
| s.Printf(", dynamic type: unknown) "); |
| else |
| { |
| ObjCLanguageRuntime::ObjCISA isa = runtime->GetISA(*valobj); |
| if (!runtime->IsValidISA(isa)) |
| s.Printf(", dynamic type: unknown) "); |
| else |
| s.Printf(", dynamic type: %s) ", |
| runtime->GetActualTypeName(isa).GetCString()); |
| } |
| } |
| } |
| else |
| s.Printf(") "); |
| } |
| |
| |
| if (flat_output) |
| { |
| // If we are showing types, also qualify the C++ base classes |
| const bool qualify_cxx_base_classes = show_types; |
| valobj->GetExpressionPath(s, qualify_cxx_base_classes); |
| s.PutCString(" ="); |
| } |
| else |
| { |
| const char *name_cstr = root_valobj_name ? root_valobj_name : valobj->GetName().AsCString(""); |
| s.Printf ("%s =", name_cstr); |
| } |
| |
| if (!scope_already_checked && !valobj->IsInScope()) |
| { |
| err_cstr = "out of scope"; |
| } |
| } |
| |
| const char *val_cstr = NULL; |
| const char *sum_cstr = NULL; |
| SummaryFormat* entry = valobj->GetSummaryFormat().get(); |
| |
| if (omit_summary_depth > 0) |
| entry = NULL; |
| |
| if (err_cstr == NULL) |
| { |
| val_cstr = valobj->GetValueAsCString(); |
| err_cstr = valobj->GetError().AsCString(); |
| } |
| |
| if (err_cstr) |
| { |
| s.Printf (" <%s>\n", err_cstr); |
| } |
| else |
| { |
| const bool is_ref = type_flags.Test (ClangASTContext::eTypeIsReference); |
| if (print_valobj) |
| { |
| |
| sum_cstr = (omit_summary_depth == 0) ? valobj->GetSummaryAsCString() : NULL; |
| |
| // We must calculate this value in realtime because entry might alter this variable's value |
| // (e.g. by saying ${var%fmt}) and render precached values useless |
| if (val_cstr && (!entry || entry->DoesPrintValue() || !sum_cstr)) |
| s.Printf(" %s", valobj->GetValueAsCString()); |
| |
| if (sum_cstr) |
| { |
| // for some reason, using %@ (ObjC description) in a summary string, makes |
| // us believe we need to reset ourselves, thus invalidating the content of |
| // sum_cstr. Thus, IF we had a valid sum_cstr before, but it is now empty |
| // let us recalculate it! |
| if (sum_cstr[0] == '\0') |
| s.Printf(" %s", valobj->GetSummaryAsCString()); |
| else |
| s.Printf(" %s", sum_cstr); |
| } |
| |
| if (use_objc) |
| { |
| const char *object_desc = valobj->GetObjectDescription(); |
| if (object_desc) |
| s.Printf(" %s\n", object_desc); |
| else |
| s.Printf (" [no Objective-C description available]\n"); |
| return; |
| } |
| } |
| |
| if (curr_depth < max_depth) |
| { |
| // We will show children for all concrete types. We won't show |
| // pointer contents unless a pointer depth has been specified. |
| // We won't reference contents unless the reference is the |
| // root object (depth of zero). |
| bool print_children = true; |
| |
| // Use a new temporary pointer depth in case we override the |
| // current pointer depth below... |
| uint32_t curr_ptr_depth = ptr_depth; |
| |
| const bool is_ptr = type_flags.Test (ClangASTContext::eTypeIsPointer); |
| if (is_ptr || is_ref) |
| { |
| // We have a pointer or reference whose value is an address. |
| // Make sure that address is not NULL |
| AddressType ptr_address_type; |
| if (valobj->GetPointerValue (ptr_address_type, true) == 0) |
| print_children = false; |
| |
| else if (is_ref && curr_depth == 0) |
| { |
| // If this is the root object (depth is zero) that we are showing |
| // and it is a reference, and no pointer depth has been supplied |
| // print out what it references. Don't do this at deeper depths |
| // otherwise we can end up with infinite recursion... |
| curr_ptr_depth = 1; |
| } |
| |
| if (curr_ptr_depth == 0) |
| print_children = false; |
| } |
| |
| if (print_children && (!entry || entry->DoesPrintChildren() || !sum_cstr)) |
| { |
| ValueObjectSP synth_vobj = valobj->GetSyntheticValue(use_synth ? |
| lldb::eUseSyntheticFilter : |
| lldb::eNoSyntheticFilter); |
| const uint32_t num_children = synth_vobj->GetNumChildren(); |
| if (num_children) |
| { |
| if (flat_output) |
| { |
| if (print_valobj) |
| s.EOL(); |
| } |
| else |
| { |
| if (print_valobj) |
| s.PutCString(is_ref ? ": {\n" : " {\n"); |
| s.IndentMore(); |
| } |
| |
| for (uint32_t idx=0; idx<num_children; ++idx) |
| { |
| ValueObjectSP child_sp(synth_vobj->GetChildAtIndex(idx, true)); |
| if (child_sp.get()) |
| { |
| DumpValueObject (s, |
| child_sp.get(), |
| NULL, |
| (is_ptr || is_ref) ? curr_ptr_depth - 1 : curr_ptr_depth, |
| curr_depth + 1, |
| max_depth, |
| show_types, |
| show_location, |
| false, |
| use_dynamic, |
| use_synth, |
| true, |
| flat_output, |
| omit_summary_depth > 1 ? omit_summary_depth - 1 : 0); |
| } |
| } |
| |
| if (!flat_output) |
| { |
| s.IndentLess(); |
| s.Indent("}\n"); |
| } |
| } |
| else if (has_children) |
| { |
| // Aggregate, no children... |
| if (print_valobj) |
| s.PutCString(" {}\n"); |
| } |
| else |
| { |
| if (print_valobj) |
| s.EOL(); |
| } |
| |
| } |
| else |
| { |
| s.EOL(); |
| } |
| } |
| else |
| { |
| if (has_children && print_valobj) |
| { |
| s.PutCString("{...}\n"); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| ValueObjectSP |
| ValueObject::CreateConstantValue (const ConstString &name) |
| { |
| ValueObjectSP valobj_sp; |
| |
| if (UpdateValueIfNeeded(false) && m_error.Success()) |
| { |
| ExecutionContextScope *exe_scope = GetExecutionContextScope(); |
| if (exe_scope) |
| { |
| ExecutionContext exe_ctx; |
| exe_scope->CalculateExecutionContext(exe_ctx); |
| |
| clang::ASTContext *ast = GetClangAST (); |
| |
| DataExtractor data; |
| data.SetByteOrder (m_data.GetByteOrder()); |
| data.SetAddressByteSize(m_data.GetAddressByteSize()); |
| |
| m_error = m_value.GetValueAsData (&exe_ctx, ast, data, 0, GetModule()); |
| |
| valobj_sp = ValueObjectConstResult::Create (exe_scope, |
| ast, |
| GetClangType(), |
| name, |
| data); |
| } |
| } |
| |
| if (!valobj_sp) |
| { |
| valobj_sp = ValueObjectConstResult::Create (NULL, m_error); |
| } |
| return valobj_sp; |
| } |
| |
| lldb::ValueObjectSP |
| ValueObject::Dereference (Error &error) |
| { |
| if (m_deref_valobj) |
| return m_deref_valobj->GetSP(); |
| |
| const bool is_pointer_type = IsPointerType(); |
| if (is_pointer_type) |
| { |
| bool omit_empty_base_classes = true; |
| bool ignore_array_bounds = false; |
| |
| std::string child_name_str; |
| uint32_t child_byte_size = 0; |
| int32_t child_byte_offset = 0; |
| uint32_t child_bitfield_bit_size = 0; |
| uint32_t child_bitfield_bit_offset = 0; |
| bool child_is_base_class = false; |
| bool child_is_deref_of_parent = false; |
| const bool transparent_pointers = false; |
| clang::ASTContext *clang_ast = GetClangAST(); |
| clang_type_t clang_type = GetClangType(); |
| clang_type_t child_clang_type; |
| |
| ExecutionContext exe_ctx; |
| GetExecutionContextScope()->CalculateExecutionContext (exe_ctx); |
| |
| child_clang_type = ClangASTContext::GetChildClangTypeAtIndex (&exe_ctx, |
| clang_ast, |
| GetName().GetCString(), |
| clang_type, |
| 0, |
| transparent_pointers, |
| omit_empty_base_classes, |
| ignore_array_bounds, |
| child_name_str, |
| child_byte_size, |
| child_byte_offset, |
| child_bitfield_bit_size, |
| child_bitfield_bit_offset, |
| child_is_base_class, |
| child_is_deref_of_parent); |
| if (child_clang_type && child_byte_size) |
| { |
| ConstString child_name; |
| if (!child_name_str.empty()) |
| child_name.SetCString (child_name_str.c_str()); |
| |
| m_deref_valobj = new ValueObjectChild (*this, |
| clang_ast, |
| child_clang_type, |
| child_name, |
| child_byte_size, |
| child_byte_offset, |
| child_bitfield_bit_size, |
| child_bitfield_bit_offset, |
| child_is_base_class, |
| child_is_deref_of_parent); |
| } |
| } |
| |
| if (m_deref_valobj) |
| { |
| error.Clear(); |
| return m_deref_valobj->GetSP(); |
| } |
| else |
| { |
| StreamString strm; |
| GetExpressionPath(strm, true); |
| |
| if (is_pointer_type) |
| error.SetErrorStringWithFormat("dereference failed: (%s) %s", GetTypeName().AsCString("<invalid type>"), strm.GetString().c_str()); |
| else |
| error.SetErrorStringWithFormat("not a pointer type: (%s) %s", GetTypeName().AsCString("<invalid type>"), strm.GetString().c_str()); |
| return ValueObjectSP(); |
| } |
| } |
| |
| lldb::ValueObjectSP |
| ValueObject::AddressOf (Error &error) |
| { |
| if (m_addr_of_valobj_sp) |
| return m_addr_of_valobj_sp; |
| |
| AddressType address_type = eAddressTypeInvalid; |
| const bool scalar_is_load_address = false; |
| lldb::addr_t addr = GetAddressOf (address_type, scalar_is_load_address); |
| error.Clear(); |
| if (addr != LLDB_INVALID_ADDRESS) |
| { |
| switch (address_type) |
| { |
| default: |
| case eAddressTypeInvalid: |
| { |
| StreamString expr_path_strm; |
| GetExpressionPath(expr_path_strm, true); |
| error.SetErrorStringWithFormat("'%s' is not in memory", expr_path_strm.GetString().c_str()); |
| } |
| break; |
| |
| case eAddressTypeFile: |
| case eAddressTypeLoad: |
| case eAddressTypeHost: |
| { |
| clang::ASTContext *ast = GetClangAST(); |
| clang_type_t clang_type = GetClangType(); |
| if (ast && clang_type) |
| { |
| std::string name (1, '&'); |
| name.append (m_name.AsCString("")); |
| m_addr_of_valobj_sp = ValueObjectConstResult::Create (GetExecutionContextScope(), |
| ast, |
| ClangASTContext::CreatePointerType (ast, clang_type), |
| ConstString (name.c_str()), |
| addr, |
| eAddressTypeInvalid, |
| m_data.GetAddressByteSize()); |
| } |
| } |
| break; |
| } |
| } |
| return m_addr_of_valobj_sp; |
| } |
| |
| |
| lldb::ValueObjectSP |
| ValueObject::CastPointerType (const char *name, ClangASTType &clang_ast_type) |
| { |
| lldb::ValueObjectSP valobj_sp; |
| AddressType address_type; |
| const bool scalar_is_load_address = true; |
| lldb::addr_t ptr_value = GetPointerValue (address_type, scalar_is_load_address); |
| |
| if (ptr_value != LLDB_INVALID_ADDRESS) |
| { |
| Address ptr_addr (NULL, ptr_value); |
| |
| valobj_sp = ValueObjectMemory::Create (GetExecutionContextScope(), |
| name, |
| ptr_addr, |
| clang_ast_type); |
| } |
| return valobj_sp; |
| } |
| |
| lldb::ValueObjectSP |
| ValueObject::CastPointerType (const char *name, TypeSP &type_sp) |
| { |
| lldb::ValueObjectSP valobj_sp; |
| AddressType address_type; |
| const bool scalar_is_load_address = true; |
| lldb::addr_t ptr_value = GetPointerValue (address_type, scalar_is_load_address); |
| |
| if (ptr_value != LLDB_INVALID_ADDRESS) |
| { |
| Address ptr_addr (NULL, ptr_value); |
| |
| valobj_sp = ValueObjectMemory::Create (GetExecutionContextScope(), |
| name, |
| ptr_addr, |
| type_sp); |
| } |
| return valobj_sp; |
| } |
| |
| ValueObject::EvaluationPoint::EvaluationPoint () : |
| m_thread_id (LLDB_INVALID_UID), |
| m_stop_id (0) |
| { |
| } |
| |
| ValueObject::EvaluationPoint::EvaluationPoint (ExecutionContextScope *exe_scope, bool use_selected): |
| m_needs_update (true), |
| m_first_update (true), |
| m_thread_id (LLDB_INVALID_THREAD_ID), |
| m_stop_id (0) |
| |
| { |
| ExecutionContext exe_ctx; |
| ExecutionContextScope *computed_exe_scope = exe_scope; // If use_selected is true, we may find a better scope, |
| // and if so we want to cache that not the original. |
| if (exe_scope) |
| exe_scope->CalculateExecutionContext(exe_ctx); |
| if (exe_ctx.target != NULL) |
| { |
| m_target_sp = exe_ctx.target->GetSP(); |
| |
| if (exe_ctx.process == NULL) |
| m_process_sp = exe_ctx.target->GetProcessSP(); |
| else |
| m_process_sp = exe_ctx.process->GetSP(); |
| |
| if (m_process_sp != NULL) |
| { |
| m_stop_id = m_process_sp->GetStopID(); |
| Thread *thread = NULL; |
| |
| if (exe_ctx.thread == NULL) |
| { |
| if (use_selected) |
| { |
| thread = m_process_sp->GetThreadList().GetSelectedThread().get(); |
| if (thread) |
| computed_exe_scope = thread; |
| } |
| } |
| else |
| thread = exe_ctx.thread; |
| |
| if (thread != NULL) |
| { |
| m_thread_id = thread->GetIndexID(); |
| if (exe_ctx.frame == NULL) |
| { |
| if (use_selected) |
| { |
| StackFrame *frame = exe_ctx.thread->GetSelectedFrame().get(); |
| if (frame) |
| { |
| m_stack_id = frame->GetStackID(); |
| computed_exe_scope = frame; |
| } |
| } |
| } |
| else |
| m_stack_id = exe_ctx.frame->GetStackID(); |
| } |
| } |
| } |
| m_exe_scope = computed_exe_scope; |
| } |
| |
| ValueObject::EvaluationPoint::EvaluationPoint (const ValueObject::EvaluationPoint &rhs) : |
| m_exe_scope (rhs.m_exe_scope), |
| m_needs_update(true), |
| m_first_update(true), |
| m_target_sp (rhs.m_target_sp), |
| m_process_sp (rhs.m_process_sp), |
| m_thread_id (rhs.m_thread_id), |
| m_stack_id (rhs.m_stack_id), |
| m_stop_id (0) |
| { |
| } |
| |
| ValueObject::EvaluationPoint::~EvaluationPoint () |
| { |
| } |
| |
| ExecutionContextScope * |
| ValueObject::EvaluationPoint::GetExecutionContextScope () |
| { |
| // We have to update before giving out the scope, or we could be handing out stale pointers. |
| SyncWithProcessState(); |
| |
| return m_exe_scope; |
| } |
| |
| // This function checks the EvaluationPoint against the current process state. If the current |
| // state matches the evaluation point, or the evaluation point is already invalid, then we return |
| // false, meaning "no change". If the current state is different, we update our state, and return |
| // true meaning "yes, change". If we did see a change, we also set m_needs_update to true, so |
| // future calls to NeedsUpdate will return true. |
| |
| bool |
| ValueObject::EvaluationPoint::SyncWithProcessState() |
| { |
| // If we're already invalid, we don't need to do anything, and nothing has changed: |
| if (m_stop_id == LLDB_INVALID_UID) |
| { |
| // Can't update with an invalid state. |
| m_needs_update = false; |
| return false; |
| } |
| |
| // If we don't have a process nothing can change. |
| if (!m_process_sp) |
| return false; |
| |
| // If our stop id is the current stop ID, nothing has changed: |
| uint32_t cur_stop_id = m_process_sp->GetStopID(); |
| if (m_stop_id == cur_stop_id) |
| return false; |
| |
| // If the current stop id is 0, either we haven't run yet, or the process state has been cleared. |
| // In either case, we aren't going to be able to sync with the process state. |
| if (cur_stop_id == 0) |
| return false; |
| |
| m_stop_id = cur_stop_id; |
| m_needs_update = true; |
| m_exe_scope = m_process_sp.get(); |
| |
| // Something has changed, so we will return true. Now make sure the thread & frame still exist, and if either |
| // doesn't, mark ourselves as invalid. |
| |
| if (m_thread_id != LLDB_INVALID_THREAD_ID) |
| { |
| Thread *our_thread = m_process_sp->GetThreadList().FindThreadByIndexID (m_thread_id).get(); |
| if (our_thread == NULL) |
| { |
| SetInvalid(); |
| } |
| else |
| { |
| m_exe_scope = our_thread; |
| |
| if (m_stack_id.IsValid()) |
| { |
| StackFrame *our_frame = our_thread->GetFrameWithStackID (m_stack_id).get(); |
| if (our_frame == NULL) |
| SetInvalid(); |
| else |
| m_exe_scope = our_frame; |
| } |
| } |
| } |
| return true; |
| } |
| |
| void |
| ValueObject::EvaluationPoint::SetUpdated () |
| { |
| m_first_update = false; |
| m_needs_update = false; |
| if (m_process_sp) |
| m_stop_id = m_process_sp->GetStopID(); |
| } |
| |
| |
| bool |
| ValueObject::EvaluationPoint::SetContext (ExecutionContextScope *exe_scope) |
| { |
| if (!IsValid()) |
| return false; |
| |
| bool needs_update = false; |
| m_exe_scope = NULL; |
| |
| // The target has to be non-null, and the |
| Target *target = exe_scope->CalculateTarget(); |
| if (target != NULL) |
| { |
| Target *old_target = m_target_sp.get(); |
| assert (target == old_target); |
| Process *process = exe_scope->CalculateProcess(); |
| if (process != NULL) |
| { |
| // FOR NOW - assume you can't update variable objects across process boundaries. |
| Process *old_process = m_process_sp.get(); |
| assert (process == old_process); |
| |
| lldb::user_id_t stop_id = process->GetStopID(); |
| if (stop_id != m_stop_id) |
| { |
| needs_update = true; |
| m_stop_id = stop_id; |
| } |
| // See if we're switching the thread or stack context. If no thread is given, this is |
| // being evaluated in a global context. |
| Thread *thread = exe_scope->CalculateThread(); |
| if (thread != NULL) |
| { |
| lldb::user_id_t new_thread_index = thread->GetIndexID(); |
| if (new_thread_index != m_thread_id) |
| { |
| needs_update = true; |
| m_thread_id = new_thread_index; |
| m_stack_id.Clear(); |
| } |
| |
| StackFrame *new_frame = exe_scope->CalculateStackFrame(); |
| if (new_frame != NULL) |
| { |
| if (new_frame->GetStackID() != m_stack_id) |
| { |
| needs_update = true; |
| m_stack_id = new_frame->GetStackID(); |
| } |
| } |
| else |
| { |
| m_stack_id.Clear(); |
| needs_update = true; |
| } |
| } |
| else |
| { |
| // If this had been given a thread, and now there is none, we should update. |
| // Otherwise we don't have to do anything. |
| if (m_thread_id != LLDB_INVALID_UID) |
| { |
| m_thread_id = LLDB_INVALID_UID; |
| m_stack_id.Clear(); |
| needs_update = true; |
| } |
| } |
| } |
| else |
| { |
| // If there is no process, then we don't need to update anything. |
| // But if we're switching from having a process to not, we should try to update. |
| if (m_process_sp.get() != NULL) |
| { |
| needs_update = true; |
| m_process_sp.reset(); |
| m_thread_id = LLDB_INVALID_UID; |
| m_stack_id.Clear(); |
| } |
| } |
| } |
| else |
| { |
| // If there's no target, nothing can change so we don't need to update anything. |
| // But if we're switching from having a target to not, we should try to update. |
| if (m_target_sp.get() != NULL) |
| { |
| needs_update = true; |
| m_target_sp.reset(); |
| m_process_sp.reset(); |
| m_thread_id = LLDB_INVALID_UID; |
| m_stack_id.Clear(); |
| } |
| } |
| if (!m_needs_update) |
| m_needs_update = needs_update; |
| |
| return needs_update; |
| } |
| |
| void |
| ValueObject::ClearUserVisibleData() |
| { |
| m_location_str.clear(); |
| m_value_str.clear(); |
| m_summary_str.clear(); |
| m_object_desc_str.clear(); |
| } |