Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1 | //===-- ValueObject.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/ValueObject.h" |
| 11 | |
| 12 | // C Includes |
| 13 | // C++ Includes |
| 14 | // Other libraries and framework includes |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 15 | #include "llvm/Support/raw_ostream.h" |
| 16 | |
| 17 | // Project includes |
| 18 | #include "lldb/Core/DataBufferHeap.h" |
| 19 | #include "lldb/Core/StreamString.h" |
| 20 | #include "lldb/Core/ValueObjectChild.h" |
| 21 | #include "lldb/Core/ValueObjectList.h" |
| 22 | |
| 23 | #include "lldb/Symbol/ClangASTContext.h" |
| 24 | #include "lldb/Symbol/Type.h" |
| 25 | |
| 26 | #include "lldb/Target/Process.h" |
| 27 | #include "lldb/Target/RegisterContext.h" |
| 28 | #include "lldb/Target/Thread.h" |
Eli Friedman | a408326 | 2010-06-09 08:50:27 +0000 | [diff] [blame] | 29 | #include <stdlib.h> |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 30 | |
| 31 | using namespace lldb; |
| 32 | using namespace lldb_private; |
| 33 | |
| 34 | static lldb::user_id_t g_value_obj_uid = 0; |
| 35 | |
| 36 | //---------------------------------------------------------------------- |
| 37 | // ValueObject constructor |
| 38 | //---------------------------------------------------------------------- |
| 39 | ValueObject::ValueObject () : |
| 40 | UserID (++g_value_obj_uid), // Unique identifier for every value object |
| 41 | m_update_id (0), // Value object lists always start at 1, value objects start at zero |
| 42 | m_name (), |
| 43 | m_data (), |
| 44 | m_value (), |
| 45 | m_error (), |
| 46 | m_flags (), |
| 47 | m_value_str(), |
| 48 | m_location_str(), |
| 49 | m_summary_str(), |
| 50 | m_children(), |
| 51 | m_synthetic_children() |
| 52 | { |
| 53 | } |
| 54 | |
| 55 | //---------------------------------------------------------------------- |
| 56 | // Destructor |
| 57 | //---------------------------------------------------------------------- |
| 58 | ValueObject::~ValueObject () |
| 59 | { |
| 60 | } |
| 61 | |
| 62 | user_id_t |
| 63 | ValueObject::GetUpdateID() const |
| 64 | { |
| 65 | return m_update_id; |
| 66 | } |
| 67 | |
| 68 | bool |
| 69 | ValueObject::UpdateValueIfNeeded (ExecutionContextScope *exe_scope) |
| 70 | { |
| 71 | if (exe_scope) |
| 72 | { |
| 73 | Process *process = exe_scope->CalculateProcess(); |
| 74 | if (process) |
| 75 | { |
| 76 | const user_id_t stop_id = process->GetStopID(); |
| 77 | if (m_update_id != stop_id) |
| 78 | { |
| 79 | m_value_str.clear(); |
| 80 | m_location_str.clear(); |
| 81 | m_summary_str.clear(); |
| 82 | |
| 83 | UpdateValue (exe_scope); |
| 84 | if (m_error.Success()) |
| 85 | m_update_id = stop_id; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | return m_error.Success(); |
| 90 | } |
| 91 | |
| 92 | const DataExtractor & |
| 93 | ValueObject::GetDataExtractor () const |
| 94 | { |
| 95 | return m_data; |
| 96 | } |
| 97 | |
| 98 | DataExtractor & |
| 99 | ValueObject::GetDataExtractor () |
| 100 | { |
| 101 | return m_data; |
| 102 | } |
| 103 | |
| 104 | const Error & |
| 105 | ValueObject::GetError() const |
| 106 | { |
| 107 | return m_error; |
| 108 | } |
| 109 | |
| 110 | const ConstString & |
| 111 | ValueObject::GetName() const |
| 112 | { |
| 113 | return m_name; |
| 114 | } |
| 115 | |
| 116 | const char * |
| 117 | ValueObject::GetLocationAsCString (ExecutionContextScope *exe_scope) |
| 118 | { |
| 119 | if (UpdateValueIfNeeded(exe_scope)) |
| 120 | { |
| 121 | if (m_location_str.empty()) |
| 122 | { |
| 123 | StreamString sstr; |
| 124 | |
| 125 | switch (m_value.GetValueType()) |
| 126 | { |
| 127 | default: |
| 128 | break; |
| 129 | |
| 130 | case Value::eValueTypeScalar: |
| 131 | if (m_value.GetContextType() == Value::eContextTypeDCRegisterInfo) |
| 132 | { |
| 133 | RegisterInfo *reg_info = m_value.GetRegisterInfo(); |
| 134 | if (reg_info) |
| 135 | { |
| 136 | if (reg_info->name) |
| 137 | m_location_str = reg_info->name; |
| 138 | else if (reg_info->alt_name) |
| 139 | m_location_str = reg_info->alt_name; |
| 140 | break; |
| 141 | } |
| 142 | } |
| 143 | m_location_str = "scalar"; |
| 144 | break; |
| 145 | |
| 146 | case Value::eValueTypeLoadAddress: |
| 147 | case Value::eValueTypeFileAddress: |
| 148 | case Value::eValueTypeHostAddress: |
| 149 | { |
| 150 | uint32_t addr_nibble_size = m_data.GetAddressByteSize() * 2; |
| 151 | sstr.Printf("0x%*.*llx", addr_nibble_size, addr_nibble_size, m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS)); |
| 152 | m_location_str.swap(sstr.GetString()); |
| 153 | } |
| 154 | break; |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | return m_location_str.c_str(); |
| 159 | } |
| 160 | |
| 161 | Value & |
| 162 | ValueObject::GetValue() |
| 163 | { |
| 164 | return m_value; |
| 165 | } |
| 166 | |
| 167 | const Value & |
| 168 | ValueObject::GetValue() const |
| 169 | { |
| 170 | return m_value; |
| 171 | } |
| 172 | |
| 173 | bool |
| 174 | ValueObject::GetValueIsValid () |
| 175 | { |
| 176 | return m_flags.IsSet(eValueIsValid); |
| 177 | } |
| 178 | |
| 179 | |
| 180 | void |
| 181 | ValueObject::SetValueIsValid (bool b) |
| 182 | { |
| 183 | if (b) |
| 184 | m_flags.Set(eValueIsValid); |
| 185 | else |
| 186 | m_flags.Clear(eValueIsValid); |
| 187 | } |
| 188 | |
| 189 | bool |
| 190 | ValueObject::GetValueDidChange () const |
| 191 | { |
| 192 | return m_flags.IsSet(eValueChanged); |
| 193 | } |
| 194 | |
| 195 | void |
| 196 | ValueObject::SetValueDidChange (bool value_changed) |
| 197 | { |
| 198 | m_flags.Set(eValueChanged); |
| 199 | } |
| 200 | |
| 201 | ValueObjectSP |
| 202 | ValueObject::GetChildAtIndex (uint32_t idx, bool can_create) |
| 203 | { |
| 204 | ValueObjectSP child_sp; |
| 205 | if (idx < GetNumChildren()) |
| 206 | { |
| 207 | // Check if we have already made the child value object? |
| 208 | if (can_create && m_children[idx].get() == NULL) |
| 209 | { |
| 210 | // No we haven't created the child at this index, so lets have our |
| 211 | // subclass do it and cache the result for quick future access. |
| 212 | m_children[idx] = CreateChildAtIndex (idx, false, 0); |
| 213 | } |
| 214 | |
| 215 | child_sp = m_children[idx]; |
| 216 | } |
| 217 | return child_sp; |
| 218 | } |
| 219 | |
| 220 | uint32_t |
| 221 | ValueObject::GetIndexOfChildWithName (const ConstString &name) |
| 222 | { |
| 223 | bool omit_empty_base_classes = true; |
| 224 | return ClangASTContext::GetIndexOfChildWithName (GetClangAST(), |
| 225 | GetOpaqueClangQualType(), |
| 226 | name.AsCString(), |
| 227 | omit_empty_base_classes); |
| 228 | } |
| 229 | |
| 230 | ValueObjectSP |
| 231 | ValueObject::GetChildMemberWithName (const ConstString &name, bool can_create) |
| 232 | { |
| 233 | // when getting a child by name, it could be burried inside some base |
| 234 | // classes (which really aren't part of the expression path), so we |
| 235 | // need a vector of indexes that can get us down to the correct child |
| 236 | std::vector<uint32_t> child_indexes; |
| 237 | clang::ASTContext *clang_ast = GetClangAST(); |
| 238 | void *clang_type = GetOpaqueClangQualType(); |
| 239 | bool omit_empty_base_classes = true; |
| 240 | const size_t num_child_indexes = ClangASTContext::GetIndexOfChildMemberWithName (clang_ast, |
| 241 | clang_type, |
| 242 | name.AsCString(), |
| 243 | omit_empty_base_classes, |
| 244 | child_indexes); |
| 245 | ValueObjectSP child_sp; |
| 246 | if (num_child_indexes > 0) |
| 247 | { |
| 248 | std::vector<uint32_t>::const_iterator pos = child_indexes.begin (); |
| 249 | std::vector<uint32_t>::const_iterator end = child_indexes.end (); |
| 250 | |
| 251 | child_sp = GetChildAtIndex(*pos, can_create); |
| 252 | for (++pos; pos != end; ++pos) |
| 253 | { |
| 254 | if (child_sp) |
| 255 | { |
| 256 | ValueObjectSP new_child_sp(child_sp->GetChildAtIndex (*pos, can_create)); |
| 257 | child_sp = new_child_sp; |
| 258 | } |
| 259 | else |
| 260 | { |
| 261 | child_sp.reset(); |
| 262 | } |
| 263 | |
| 264 | } |
| 265 | } |
| 266 | return child_sp; |
| 267 | } |
| 268 | |
| 269 | |
| 270 | uint32_t |
| 271 | ValueObject::GetNumChildren () |
| 272 | { |
| 273 | if (m_flags.IsClear(eNumChildrenHasBeenSet)) |
| 274 | { |
| 275 | SetNumChildren (CalculateNumChildren()); |
| 276 | } |
| 277 | return m_children.size(); |
| 278 | } |
| 279 | void |
| 280 | ValueObject::SetNumChildren (uint32_t num_children) |
| 281 | { |
| 282 | m_flags.Set(eNumChildrenHasBeenSet); |
| 283 | m_children.resize(num_children); |
| 284 | } |
| 285 | |
| 286 | void |
| 287 | ValueObject::SetName (const char *name) |
| 288 | { |
| 289 | m_name.SetCString(name); |
| 290 | } |
| 291 | |
| 292 | void |
| 293 | ValueObject::SetName (const ConstString &name) |
| 294 | { |
| 295 | m_name = name; |
| 296 | } |
| 297 | |
| 298 | ValueObjectSP |
| 299 | ValueObject::CreateChildAtIndex (uint32_t idx, bool synthetic_array_member, int32_t synthetic_index) |
| 300 | { |
| 301 | ValueObjectSP valobj_sp; |
| 302 | bool omit_empty_base_classes = true; |
| 303 | |
| 304 | std::string child_name_str; |
| 305 | uint32_t child_byte_size = 0; |
| 306 | int32_t child_byte_offset = 0; |
| 307 | uint32_t child_bitfield_bit_size = 0; |
| 308 | uint32_t child_bitfield_bit_offset = 0; |
| 309 | const bool transparent_pointers = synthetic_array_member == false; |
| 310 | clang::ASTContext *clang_ast = GetClangAST(); |
| 311 | void *clang_type = GetOpaqueClangQualType(); |
| 312 | void *child_clang_type; |
| 313 | child_clang_type = ClangASTContext::GetChildClangTypeAtIndex (clang_ast, |
| 314 | GetName().AsCString(), |
| 315 | clang_type, |
| 316 | idx, |
| 317 | transparent_pointers, |
| 318 | omit_empty_base_classes, |
| 319 | child_name_str, |
| 320 | child_byte_size, |
| 321 | child_byte_offset, |
| 322 | child_bitfield_bit_size, |
| 323 | child_bitfield_bit_offset); |
| 324 | if (child_clang_type) |
| 325 | { |
| 326 | if (synthetic_index) |
| 327 | child_byte_offset += child_byte_size * synthetic_index; |
| 328 | |
| 329 | ConstString child_name; |
| 330 | if (!child_name_str.empty()) |
| 331 | child_name.SetCString (child_name_str.c_str()); |
| 332 | |
| 333 | valobj_sp.reset (new ValueObjectChild (this, |
| 334 | clang_ast, |
| 335 | child_clang_type, |
| 336 | child_name, |
| 337 | child_byte_size, |
| 338 | child_byte_offset, |
| 339 | child_bitfield_bit_size, |
| 340 | child_bitfield_bit_offset)); |
| 341 | } |
| 342 | return valobj_sp; |
| 343 | } |
| 344 | |
| 345 | const char * |
| 346 | ValueObject::GetSummaryAsCString (ExecutionContextScope *exe_scope) |
| 347 | { |
| 348 | if (UpdateValueIfNeeded (exe_scope)) |
| 349 | { |
| 350 | if (m_summary_str.empty()) |
| 351 | { |
| 352 | void *clang_type = GetOpaqueClangQualType(); |
| 353 | |
| 354 | // See if this is a pointer to a C string? |
| 355 | uint32_t fixed_length = 0; |
| 356 | if (clang_type && ClangASTContext::IsCStringType (clang_type, fixed_length)) |
| 357 | { |
| 358 | Process *process = exe_scope->CalculateProcess(); |
| 359 | if (process != NULL) |
| 360 | { |
| 361 | StreamString sstr; |
| 362 | lldb::addr_t cstr_address = LLDB_INVALID_ADDRESS; |
| 363 | lldb::AddressType cstr_address_type = eAddressTypeInvalid; |
| 364 | switch (GetValue().GetValueType()) |
| 365 | { |
| 366 | case Value::eValueTypeScalar: |
| 367 | cstr_address = m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS); |
| 368 | cstr_address_type = eAddressTypeLoad; |
| 369 | break; |
| 370 | |
| 371 | case Value::eValueTypeLoadAddress: |
| 372 | case Value::eValueTypeFileAddress: |
| 373 | case Value::eValueTypeHostAddress: |
| 374 | { |
| 375 | uint32_t data_offset = 0; |
| 376 | cstr_address = m_data.GetPointer(&data_offset); |
| 377 | cstr_address_type = m_value.GetValueAddressType(); |
| 378 | if (cstr_address_type == eAddressTypeInvalid) |
| 379 | cstr_address_type = eAddressTypeLoad; |
| 380 | } |
| 381 | break; |
| 382 | } |
| 383 | |
| 384 | if (cstr_address != LLDB_INVALID_ADDRESS) |
| 385 | { |
| 386 | DataExtractor data; |
| 387 | size_t bytes_read = 0; |
| 388 | std::vector<char> data_buffer; |
| 389 | std::vector<char> cstr_buffer; |
| 390 | size_t cstr_length; |
| 391 | Error error; |
| 392 | if (fixed_length > 0) |
| 393 | { |
| 394 | data_buffer.resize(fixed_length); |
| 395 | // Resize the formatted buffer in case every character |
| 396 | // uses the "\xXX" format and one extra byte for a NULL |
| 397 | cstr_buffer.resize(data_buffer.size() * 4 + 1); |
| 398 | data.SetData (data_buffer.data(), data_buffer.size(), eByteOrderHost); |
| 399 | bytes_read = process->ReadMemory (cstr_address, data_buffer.data(), fixed_length, error); |
| 400 | if (bytes_read > 0) |
| 401 | { |
| 402 | sstr << '"'; |
| 403 | cstr_length = data.Dump (&sstr, |
| 404 | 0, // Start offset in "data" |
| 405 | eFormatChar, // Print as characters |
| 406 | 1, // Size of item (1 byte for a char!) |
| 407 | bytes_read, // How many bytes to print? |
| 408 | UINT32_MAX, // num per line |
| 409 | LLDB_INVALID_ADDRESS,// base address |
| 410 | 0, // bitfield bit size |
| 411 | 0); // bitfield bit offset |
| 412 | sstr << '"'; |
| 413 | } |
| 414 | } |
| 415 | else |
| 416 | { |
| 417 | const size_t k_max_buf_size = 256; |
| 418 | data_buffer.resize (k_max_buf_size + 1); |
| 419 | // NULL terminate in case we don't get the entire C string |
| 420 | data_buffer.back() = '\0'; |
| 421 | // Make a formatted buffer that can contain take 4 |
| 422 | // bytes per character in case each byte uses the |
| 423 | // "\xXX" format and one extra byte for a NULL |
| 424 | cstr_buffer.resize (k_max_buf_size * 4 + 1); |
| 425 | |
| 426 | data.SetData (data_buffer.data(), data_buffer.size(), eByteOrderHost); |
| 427 | size_t total_cstr_len = 0; |
| 428 | while ((bytes_read = process->ReadMemory (cstr_address, data_buffer.data(), k_max_buf_size, error)) > 0) |
| 429 | { |
| 430 | size_t len = strlen(data_buffer.data()); |
| 431 | if (len == 0) |
| 432 | break; |
| 433 | if (len > bytes_read) |
| 434 | len = bytes_read; |
| 435 | if (sstr.GetSize() == 0) |
| 436 | sstr << '"'; |
| 437 | |
| 438 | cstr_length = data.Dump (&sstr, |
| 439 | 0, // Start offset in "data" |
| 440 | eFormatChar, // Print as characters |
| 441 | 1, // Size of item (1 byte for a char!) |
| 442 | len, // How many bytes to print? |
| 443 | UINT32_MAX, // num per line |
| 444 | LLDB_INVALID_ADDRESS,// base address |
| 445 | 0, // bitfield bit size |
| 446 | 0); // bitfield bit offset |
| 447 | |
| 448 | if (len < k_max_buf_size) |
| 449 | break; |
| 450 | cstr_address += total_cstr_len; |
| 451 | } |
| 452 | if (sstr.GetSize() > 0) |
| 453 | sstr << '"'; |
| 454 | } |
| 455 | |
| 456 | if (sstr.GetSize() > 0) |
| 457 | m_summary_str.assign (sstr.GetData(), sstr.GetSize()); |
| 458 | } |
| 459 | } |
| 460 | } |
| 461 | } |
| 462 | } |
| 463 | if (m_summary_str.empty()) |
| 464 | return NULL; |
| 465 | return m_summary_str.c_str(); |
| 466 | } |
| 467 | |
| 468 | |
| 469 | const char * |
| 470 | ValueObject::GetValueAsCString (ExecutionContextScope *exe_scope) |
| 471 | { |
| 472 | // If our byte size is zero this is an aggregate type that has children |
| 473 | if (ClangASTContext::IsAggregateType (GetOpaqueClangQualType()) == false) |
| 474 | { |
| 475 | if (UpdateValueIfNeeded(exe_scope)) |
| 476 | { |
| 477 | if (m_value_str.empty()) |
| 478 | { |
| 479 | const Value::ContextType context_type = m_value.GetContextType(); |
| 480 | |
| 481 | switch (context_type) |
| 482 | { |
| 483 | case Value::eContextTypeOpaqueClangQualType: |
| 484 | case Value::eContextTypeDCType: |
| 485 | case Value::eContextTypeDCVariable: |
| 486 | { |
| 487 | void *clang_type = GetOpaqueClangQualType (); |
| 488 | if (clang_type) |
| 489 | { |
| 490 | StreamString sstr; |
| 491 | lldb::Format format = Type::GetFormat(clang_type); |
| 492 | if (Type::DumpTypeValue(&sstr, |
| 493 | GetClangAST(), // The clang AST |
| 494 | clang_type, // The clang type to display |
| 495 | format, // Format to display this type with |
| 496 | m_data, // Data to extract from |
| 497 | 0, // Byte offset into "m_data" |
| 498 | GetByteSize(), // Byte size of item in "m_data" |
| 499 | GetBitfieldBitSize(), // Bitfield bit size |
| 500 | GetBitfieldBitOffset())) // Bitfield bit offset |
| 501 | m_value_str.swap(sstr.GetString()); |
| 502 | else |
| 503 | m_value_str.clear(); |
| 504 | } |
| 505 | } |
| 506 | break; |
| 507 | |
| 508 | case Value::eContextTypeDCRegisterInfo: |
| 509 | { |
| 510 | const RegisterInfo *reg_info = m_value.GetRegisterInfo(); |
| 511 | if (reg_info) |
| 512 | { |
| 513 | StreamString reg_sstr; |
| 514 | m_data.Dump(®_sstr, 0, reg_info->format, reg_info->byte_size, 1, UINT32_MAX, LLDB_INVALID_ADDRESS, 0, 0); |
| 515 | m_value_str.swap(reg_sstr.GetString()); |
| 516 | } |
| 517 | } |
| 518 | break; |
| 519 | } |
| 520 | } |
| 521 | } |
| 522 | } |
| 523 | if (m_value_str.empty()) |
| 524 | return NULL; |
| 525 | return m_value_str.c_str(); |
| 526 | } |
| 527 | |
| 528 | bool |
| 529 | ValueObject::SetValueFromCString (ExecutionContextScope *exe_scope, const char *value_str) |
| 530 | { |
| 531 | // Make sure our value is up to date first so that our location and location |
| 532 | // type is valid. |
| 533 | if (!UpdateValueIfNeeded(exe_scope)) |
| 534 | return false; |
| 535 | |
| 536 | uint32_t count = 0; |
| 537 | lldb::Encoding encoding = Type::GetEncoding (GetOpaqueClangQualType(), count); |
| 538 | |
| 539 | char *end = NULL; |
| 540 | size_t byte_size = GetByteSize(); |
| 541 | switch (encoding) |
| 542 | { |
| 543 | case eEncodingInvalid: |
| 544 | return false; |
| 545 | |
| 546 | case eEncodingUint: |
| 547 | if (byte_size > sizeof(unsigned long long)) |
| 548 | { |
| 549 | return false; |
| 550 | } |
| 551 | else |
| 552 | { |
| 553 | unsigned long long ull_val = strtoull(value_str, &end, 0); |
| 554 | if (end && *end != '\0') |
| 555 | return false; |
| 556 | m_value = ull_val; |
| 557 | // Limit the bytes in our m_data appropriately. |
| 558 | m_value.GetScalar().GetData (m_data, byte_size); |
| 559 | } |
| 560 | break; |
| 561 | |
| 562 | case eEncodingSint: |
| 563 | if (byte_size > sizeof(long long)) |
| 564 | { |
| 565 | return false; |
| 566 | } |
| 567 | else |
| 568 | { |
| 569 | long long sll_val = strtoll(value_str, &end, 0); |
| 570 | if (end && *end != '\0') |
| 571 | return false; |
| 572 | m_value = sll_val; |
| 573 | // Limit the bytes in our m_data appropriately. |
| 574 | m_value.GetScalar().GetData (m_data, byte_size); |
| 575 | } |
| 576 | break; |
| 577 | |
| 578 | case eEncodingIEEE754: |
| 579 | { |
| 580 | const size_t byte_size = GetByteSize(); |
| 581 | const off_t byte_offset = GetByteOffset(); |
| 582 | uint8_t *dst = (uint8_t *)m_data.PeekData(byte_offset, byte_size); |
| 583 | if (dst != NULL) |
| 584 | { |
| 585 | // We are decoding a float into host byte order below, so make |
| 586 | // sure m_data knows what it contains. |
| 587 | m_data.SetByteOrder(eByteOrderHost); |
| 588 | const size_t converted_byte_size = ClangASTContext::ConvertStringToFloatValue ( |
| 589 | GetClangAST(), |
| 590 | GetOpaqueClangQualType(), |
| 591 | value_str, |
| 592 | dst, |
| 593 | byte_size); |
| 594 | |
| 595 | if (converted_byte_size == byte_size) |
| 596 | { |
| 597 | } |
| 598 | } |
| 599 | } |
| 600 | break; |
| 601 | |
| 602 | case eEncodingVector: |
| 603 | return false; |
| 604 | |
| 605 | default: |
| 606 | return false; |
| 607 | } |
| 608 | |
| 609 | // If we have made it here the value is in m_data and we should write it |
| 610 | // out to the target |
| 611 | return Write (); |
| 612 | } |
| 613 | |
| 614 | bool |
| 615 | ValueObject::Write () |
| 616 | { |
| 617 | // Clear the update ID so the next time we try and read the value |
| 618 | // we try and read it again. |
| 619 | m_update_id = 0; |
| 620 | |
| 621 | // TODO: when Value has a method to write a value back, call it from here. |
| 622 | return false; |
| 623 | |
| 624 | } |
| 625 | |
| 626 | void |
| 627 | ValueObject::AddSyntheticChild (const ConstString &key, ValueObjectSP& valobj_sp) |
| 628 | { |
| 629 | m_synthetic_children[key] = valobj_sp; |
| 630 | } |
| 631 | |
| 632 | ValueObjectSP |
| 633 | ValueObject::GetSyntheticChild (const ConstString &key) const |
| 634 | { |
| 635 | ValueObjectSP synthetic_child_sp; |
| 636 | std::map<ConstString, ValueObjectSP>::const_iterator pos = m_synthetic_children.find (key); |
| 637 | if (pos != m_synthetic_children.end()) |
| 638 | synthetic_child_sp = pos->second; |
| 639 | return synthetic_child_sp; |
| 640 | } |
| 641 | |
| 642 | bool |
| 643 | ValueObject::IsPointerType () |
| 644 | { |
| 645 | return ClangASTContext::IsPointerType (GetOpaqueClangQualType()); |
| 646 | } |
| 647 | |
| 648 | bool |
| 649 | ValueObject::IsPointerOrReferenceType () |
| 650 | { |
| 651 | return ClangASTContext::IsPointerOrReferenceType(GetOpaqueClangQualType()); |
| 652 | } |
| 653 | |
| 654 | ValueObjectSP |
| 655 | ValueObject::GetSyntheticArrayMemberFromPointer (int32_t index, bool can_create) |
| 656 | { |
| 657 | ValueObjectSP synthetic_child_sp; |
| 658 | if (IsPointerType ()) |
| 659 | { |
| 660 | char index_str[64]; |
| 661 | snprintf(index_str, sizeof(index_str), "[%i]", index); |
| 662 | ConstString index_const_str(index_str); |
| 663 | // Check if we have already created a synthetic array member in this |
| 664 | // valid object. If we have we will re-use it. |
| 665 | synthetic_child_sp = GetSyntheticChild (index_const_str); |
| 666 | if (!synthetic_child_sp) |
| 667 | { |
| 668 | // We haven't made a synthetic array member for INDEX yet, so |
| 669 | // lets make one and cache it for any future reference. |
| 670 | synthetic_child_sp = CreateChildAtIndex(0, true, index); |
| 671 | |
| 672 | // Cache the value if we got one back... |
| 673 | if (synthetic_child_sp) |
| 674 | AddSyntheticChild(index_const_str, synthetic_child_sp); |
| 675 | } |
| 676 | } |
| 677 | return synthetic_child_sp; |
| 678 | } |