1 //===-- ValueObjectConstResultImpl.cpp ---------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/Core/ValueObjectConstResultImpl.h" 11 12 #include "lldb/Core/ValueObjectChild.h" 13 #include "lldb/Core/ValueObjectConstResult.h" 14 #include "lldb/Core/ValueObjectConstResultCast.h" 15 #include "lldb/Core/ValueObjectConstResultChild.h" 16 #include "lldb/Core/ValueObjectMemory.h" 17 #include "lldb/Core/DataExtractor.h" 18 #include "lldb/Core/Module.h" 19 #include "lldb/Core/ValueObjectList.h" 20 21 #include "lldb/Symbol/ClangASTType.h" 22 #include "lldb/Symbol/ObjectFile.h" 23 #include "lldb/Symbol/SymbolContext.h" 24 #include "lldb/Symbol/Type.h" 25 #include "lldb/Symbol/Variable.h" 26 27 #include "lldb/Target/ExecutionContext.h" 28 #include "lldb/Target/Process.h" 29 #include "lldb/Target/Target.h" 30 31 using namespace lldb; 32 using namespace lldb_private; 33 34 ValueObjectConstResultImpl::ValueObjectConstResultImpl (ValueObject* valobj, 35 lldb::addr_t live_address) : 36 m_impl_backend(valobj), 37 m_live_address(live_address), 38 m_live_address_type(eAddressTypeLoad), 39 m_load_addr_backend(), 40 m_address_of_backend() 41 { 42 } 43 44 lldb::ValueObjectSP 45 ValueObjectConstResultImpl::Dereference (Error &error) 46 { 47 if (m_impl_backend == NULL) 48 return lldb::ValueObjectSP(); 49 50 return m_impl_backend->ValueObject::Dereference(error); 51 } 52 53 ValueObject * 54 ValueObjectConstResultImpl::CreateChildAtIndex (size_t idx, bool synthetic_array_member, int32_t synthetic_index) 55 { 56 if (m_impl_backend == NULL) 57 return NULL; 58 59 m_impl_backend->UpdateValueIfNeeded(false); 60 61 ValueObjectConstResultChild *valobj = NULL; 62 63 bool omit_empty_base_classes = true; 64 bool ignore_array_bounds = synthetic_array_member; 65 std::string child_name_str; 66 uint32_t child_byte_size = 0; 67 int32_t child_byte_offset = 0; 68 uint32_t child_bitfield_bit_size = 0; 69 uint32_t child_bitfield_bit_offset = 0; 70 bool child_is_base_class = false; 71 bool child_is_deref_of_parent = false; 72 73 const bool transparent_pointers = synthetic_array_member == false; 74 ClangASTType clang_type = m_impl_backend->GetClangType(); 75 ClangASTType child_clang_type; 76 77 ExecutionContext exe_ctx (m_impl_backend->GetExecutionContextRef()); 78 79 child_clang_type = clang_type.GetChildClangTypeAtIndex (&exe_ctx, 80 idx, 81 transparent_pointers, 82 omit_empty_base_classes, 83 ignore_array_bounds, 84 child_name_str, 85 child_byte_size, 86 child_byte_offset, 87 child_bitfield_bit_size, 88 child_bitfield_bit_offset, 89 child_is_base_class, 90 child_is_deref_of_parent, 91 m_impl_backend); 92 if (child_clang_type && child_byte_size) 93 { 94 if (synthetic_index) 95 child_byte_offset += child_byte_size * synthetic_index; 96 97 ConstString child_name; 98 if (!child_name_str.empty()) 99 child_name.SetCString (child_name_str.c_str()); 100 101 valobj = new ValueObjectConstResultChild (*m_impl_backend, 102 child_clang_type, 103 child_name, 104 child_byte_size, 105 child_byte_offset, 106 child_bitfield_bit_size, 107 child_bitfield_bit_offset, 108 child_is_base_class, 109 child_is_deref_of_parent); 110 if (m_live_address != LLDB_INVALID_ADDRESS) 111 valobj->m_impl.SetLiveAddress(m_live_address+child_byte_offset); 112 } 113 114 return valobj; 115 } 116 117 lldb::ValueObjectSP 118 ValueObjectConstResultImpl::GetSyntheticChildAtOffset (uint32_t offset, const ClangASTType& type, bool can_create) 119 { 120 if (m_impl_backend == NULL) 121 return lldb::ValueObjectSP(); 122 123 return m_impl_backend->ValueObject::GetSyntheticChildAtOffset(offset, type, can_create); 124 } 125 126 lldb::ValueObjectSP 127 ValueObjectConstResultImpl::AddressOf (Error &error) 128 { 129 if (m_address_of_backend.get() != NULL) 130 return m_address_of_backend; 131 132 if (m_impl_backend == NULL) 133 return lldb::ValueObjectSP(); 134 if (m_live_address != LLDB_INVALID_ADDRESS) 135 { 136 ClangASTType clang_type(m_impl_backend->GetClangType()); 137 138 lldb::DataBufferSP buffer(new lldb_private::DataBufferHeap(&m_live_address,sizeof(lldb::addr_t))); 139 140 std::string new_name("&"); 141 new_name.append(m_impl_backend->GetName().AsCString("")); 142 ExecutionContext exe_ctx (m_impl_backend->GetExecutionContextRef()); 143 m_address_of_backend = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), 144 clang_type.GetPointerType(), 145 ConstString(new_name.c_str()), 146 buffer, 147 lldb::endian::InlHostByteOrder(), 148 exe_ctx.GetAddressByteSize()); 149 150 m_address_of_backend->GetValue().SetValueType(Value::eValueTypeScalar); 151 m_address_of_backend->GetValue().GetScalar() = m_live_address; 152 153 return m_address_of_backend; 154 } 155 else 156 return m_impl_backend->ValueObject::AddressOf(error); 157 } 158 159 lldb::ValueObjectSP 160 ValueObjectConstResultImpl::Cast (const ClangASTType &clang_ast_type) 161 { 162 if (m_impl_backend == NULL) 163 return lldb::ValueObjectSP(); 164 165 ValueObjectConstResultCast *result_cast = new ValueObjectConstResultCast( 166 *m_impl_backend, m_impl_backend->GetName(), clang_ast_type, m_live_address); 167 return result_cast->GetSP(); 168 } 169 170 lldb::addr_t 171 ValueObjectConstResultImpl::GetAddressOf (bool scalar_is_load_address, 172 AddressType *address_type) 173 { 174 175 if (m_impl_backend == NULL) 176 return 0; 177 178 if (m_live_address == LLDB_INVALID_ADDRESS) 179 { 180 return m_impl_backend->ValueObject::GetAddressOf (scalar_is_load_address, 181 address_type); 182 } 183 184 if (address_type) 185 *address_type = m_live_address_type; 186 187 return m_live_address; 188 } 189 190 size_t 191 ValueObjectConstResultImpl::GetPointeeData (DataExtractor& data, 192 uint32_t item_idx, 193 uint32_t item_count) 194 { 195 if (m_impl_backend == NULL) 196 return 0; 197 return m_impl_backend->ValueObject::GetPointeeData(data, item_idx, item_count); 198 } 199