1 //===-- CommandObjectBreakpointCommand.cpp --------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "CommandObjectBreakpointCommand.h" 10 #include "CommandObjectBreakpoint.h" 11 #include "lldb/Breakpoint/Breakpoint.h" 12 #include "lldb/Breakpoint/BreakpointIDList.h" 13 #include "lldb/Breakpoint/BreakpointLocation.h" 14 #include "lldb/Core/IOHandler.h" 15 #include "lldb/Host/OptionParser.h" 16 #include "lldb/Interpreter/CommandInterpreter.h" 17 #include "lldb/Interpreter/CommandOptionArgumentTable.h" 18 #include "lldb/Interpreter/CommandReturnObject.h" 19 #include "lldb/Interpreter/OptionArgParser.h" 20 #include "lldb/Interpreter/OptionGroupPythonClassWithDict.h" 21 #include "lldb/Target/Target.h" 22 23 using namespace lldb; 24 using namespace lldb_private; 25 26 #define LLDB_OPTIONS_breakpoint_command_add 27 #include "CommandOptions.inc" 28 29 class CommandObjectBreakpointCommandAdd : public CommandObjectParsed, 30 public IOHandlerDelegateMultiline { 31 public: 32 CommandObjectBreakpointCommandAdd(CommandInterpreter &interpreter) 33 : CommandObjectParsed(interpreter, "add", 34 "Add LLDB commands to a breakpoint, to be executed " 35 "whenever the breakpoint is hit. " 36 "The commands added to the breakpoint replace any " 37 "commands previously added to it." 38 " If no breakpoint is specified, adds the " 39 "commands to the last created breakpoint.", 40 nullptr), 41 IOHandlerDelegateMultiline("DONE", 42 IOHandlerDelegate::Completion::LLDBCommand), 43 m_func_options("breakpoint command", false, 'F') { 44 SetHelpLong( 45 R"( 46 General information about entering breakpoint commands 47 ------------------------------------------------------ 48 49 )" 50 "This command will prompt for commands to be executed when the specified \ 51 breakpoint is hit. Each command is typed on its own line following the '> ' \ 52 prompt until 'DONE' is entered." 53 R"( 54 55 )" 56 "Syntactic errors may not be detected when initially entered, and many \ 57 malformed commands can silently fail when executed. If your breakpoint commands \ 58 do not appear to be executing, double-check the command syntax." 59 R"( 60 61 )" 62 "Note: You may enter any debugger command exactly as you would at the debugger \ 63 prompt. There is no limit to the number of commands supplied, but do NOT enter \ 64 more than one command per line." 65 R"( 66 67 Special information about PYTHON breakpoint commands 68 ---------------------------------------------------- 69 70 )" 71 "You may enter either one or more lines of Python, including function \ 72 definitions or calls to functions that will have been imported by the time \ 73 the code executes. Single line breakpoint commands will be interpreted 'as is' \ 74 when the breakpoint is hit. Multiple lines of Python will be wrapped in a \ 75 generated function, and a call to the function will be attached to the breakpoint." 76 R"( 77 78 This auto-generated function is passed in three arguments: 79 80 frame: an lldb.SBFrame object for the frame which hit breakpoint. 81 82 bp_loc: an lldb.SBBreakpointLocation object that represents the breakpoint location that was hit. 83 84 dict: the python session dictionary hit. 85 86 )" 87 "When specifying a python function with the --python-function option, you need \ 88 to supply the function name prepended by the module name:" 89 R"( 90 91 --python-function myutils.breakpoint_callback 92 93 The function itself must have either of the following prototypes: 94 95 def breakpoint_callback(frame, bp_loc, internal_dict): 96 # Your code goes here 97 98 or: 99 100 def breakpoint_callback(frame, bp_loc, extra_args, internal_dict): 101 # Your code goes here 102 103 )" 104 "The arguments are the same as the arguments passed to generated functions as \ 105 described above. In the second form, any -k and -v pairs provided to the command will \ 106 be packaged into a SBDictionary in an SBStructuredData and passed as the extra_args parameter. \ 107 \n\n\ 108 Note that the global variable 'lldb.frame' will NOT be updated when \ 109 this function is called, so be sure to use the 'frame' argument. The 'frame' argument \ 110 can get you to the thread via frame.GetThread(), the thread can get you to the \ 111 process via thread.GetProcess(), and the process can get you back to the target \ 112 via process.GetTarget()." 113 R"( 114 115 )" 116 "Important Note: As Python code gets collected into functions, access to global \ 117 variables requires explicit scoping using the 'global' keyword. Be sure to use correct \ 118 Python syntax, including indentation, when entering Python breakpoint commands." 119 R"( 120 121 Example Python one-line breakpoint command: 122 123 (lldb) breakpoint command add -s python 1 124 Enter your Python command(s). Type 'DONE' to end. 125 def function (frame, bp_loc, internal_dict): 126 """frame: the lldb.SBFrame for the location at which you stopped 127 bp_loc: an lldb.SBBreakpointLocation for the breakpoint location information 128 internal_dict: an LLDB support object not to be used""" 129 print("Hit this breakpoint!") 130 DONE 131 132 As a convenience, this also works for a short Python one-liner: 133 134 (lldb) breakpoint command add -s python 1 -o 'import time; print(time.asctime())' 135 (lldb) run 136 Launching '.../a.out' (x86_64) 137 (lldb) Fri Sep 10 12:17:45 2010 138 Process 21778 Stopped 139 * thread #1: tid = 0x2e03, 0x0000000100000de8 a.out`c + 7 at main.c:39, stop reason = breakpoint 1.1, queue = com.apple.main-thread 140 36 141 37 int c(int val) 142 38 { 143 39 -> return val + 3; 144 40 } 145 41 146 42 int main (int argc, char const *argv[]) 147 148 Example multiple line Python breakpoint command: 149 150 (lldb) breakpoint command add -s p 1 151 Enter your Python command(s). Type 'DONE' to end. 152 def function (frame, bp_loc, internal_dict): 153 """frame: the lldb.SBFrame for the location at which you stopped 154 bp_loc: an lldb.SBBreakpointLocation for the breakpoint location information 155 internal_dict: an LLDB support object not to be used""" 156 global bp_count 157 bp_count = bp_count + 1 158 print("Hit this breakpoint " + repr(bp_count) + " times!") 159 DONE 160 161 )" 162 "In this case, since there is a reference to a global variable, \ 163 'bp_count', you will also need to make sure 'bp_count' exists and is \ 164 initialized:" 165 R"( 166 167 (lldb) script 168 >>> bp_count = 0 169 >>> quit() 170 171 )" 172 "Your Python code, however organized, can optionally return a value. \ 173 If the returned value is False, that tells LLDB not to stop at the breakpoint \ 174 to which the code is associated. Returning anything other than False, or even \ 175 returning None, or even omitting a return statement entirely, will cause \ 176 LLDB to stop." 177 R"( 178 179 )" 180 "Final Note: A warning that no breakpoint command was generated when there \ 181 are no syntax errors may indicate that a function was declared but never called."); 182 183 m_all_options.Append(&m_options); 184 m_all_options.Append(&m_func_options, LLDB_OPT_SET_2 | LLDB_OPT_SET_3, 185 LLDB_OPT_SET_2); 186 m_all_options.Finalize(); 187 188 AddSimpleArgumentList(eArgTypeBreakpointID, eArgRepeatOptional); 189 } 190 191 ~CommandObjectBreakpointCommandAdd() override = default; 192 193 Options *GetOptions() override { return &m_all_options; } 194 195 void IOHandlerActivated(IOHandler &io_handler, bool interactive) override { 196 StreamFileSP output_sp(io_handler.GetOutputStreamFileSP()); 197 if (output_sp && interactive) { 198 output_sp->PutCString(g_reader_instructions); 199 output_sp->Flush(); 200 } 201 } 202 203 void IOHandlerInputComplete(IOHandler &io_handler, 204 std::string &line) override { 205 io_handler.SetIsDone(true); 206 207 std::vector<std::reference_wrapper<BreakpointOptions>> *bp_options_vec = 208 (std::vector<std::reference_wrapper<BreakpointOptions>> *) 209 io_handler.GetUserData(); 210 for (BreakpointOptions &bp_options : *bp_options_vec) { 211 auto cmd_data = std::make_unique<BreakpointOptions::CommandData>(); 212 cmd_data->user_source.SplitIntoLines(line.c_str(), line.size()); 213 bp_options.SetCommandDataCallback(cmd_data); 214 } 215 } 216 217 void CollectDataForBreakpointCommandCallback( 218 std::vector<std::reference_wrapper<BreakpointOptions>> &bp_options_vec, 219 CommandReturnObject &result) { 220 m_interpreter.GetLLDBCommandsFromIOHandler( 221 "> ", // Prompt 222 *this, // IOHandlerDelegate 223 &bp_options_vec); // Baton for the "io_handler" that will be passed back 224 // into our IOHandlerDelegate functions 225 } 226 227 /// Set a one-liner as the callback for the breakpoint. 228 void SetBreakpointCommandCallback( 229 std::vector<std::reference_wrapper<BreakpointOptions>> &bp_options_vec, 230 const char *oneliner) { 231 for (BreakpointOptions &bp_options : bp_options_vec) { 232 auto cmd_data = std::make_unique<BreakpointOptions::CommandData>(); 233 234 cmd_data->user_source.AppendString(oneliner); 235 cmd_data->stop_on_error = m_options.m_stop_on_error; 236 237 bp_options.SetCommandDataCallback(cmd_data); 238 } 239 } 240 241 class CommandOptions : public OptionGroup { 242 public: 243 CommandOptions() = default; 244 245 ~CommandOptions() override = default; 246 247 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 248 ExecutionContext *execution_context) override { 249 Status error; 250 const int short_option = 251 g_breakpoint_command_add_options[option_idx].short_option; 252 253 switch (short_option) { 254 case 'o': 255 m_use_one_liner = true; 256 m_one_liner = std::string(option_arg); 257 break; 258 259 case 's': 260 m_script_language = (lldb::ScriptLanguage)OptionArgParser::ToOptionEnum( 261 option_arg, 262 g_breakpoint_command_add_options[option_idx].enum_values, 263 eScriptLanguageNone, error); 264 switch (m_script_language) { 265 case eScriptLanguagePython: 266 case eScriptLanguageLua: 267 m_use_script_language = true; 268 break; 269 case eScriptLanguageNone: 270 case eScriptLanguageUnknown: 271 m_use_script_language = false; 272 break; 273 } 274 break; 275 276 case 'e': { 277 bool success = false; 278 m_stop_on_error = 279 OptionArgParser::ToBoolean(option_arg, false, &success); 280 if (!success) 281 return Status::FromErrorStringWithFormatv( 282 "invalid value for stop-on-error: \"{0}\"", option_arg); 283 } break; 284 285 case 'D': 286 m_use_dummy = true; 287 break; 288 289 default: 290 llvm_unreachable("Unimplemented option"); 291 } 292 return error; 293 } 294 295 void OptionParsingStarting(ExecutionContext *execution_context) override { 296 m_use_commands = true; 297 m_use_script_language = false; 298 m_script_language = eScriptLanguageNone; 299 300 m_use_one_liner = false; 301 m_stop_on_error = true; 302 m_one_liner.clear(); 303 m_use_dummy = false; 304 } 305 306 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 307 return llvm::ArrayRef(g_breakpoint_command_add_options); 308 } 309 310 // Instance variables to hold the values for command options. 311 312 bool m_use_commands = false; 313 bool m_use_script_language = false; 314 lldb::ScriptLanguage m_script_language = eScriptLanguageNone; 315 316 // Instance variables to hold the values for one_liner options. 317 bool m_use_one_liner = false; 318 std::string m_one_liner; 319 bool m_stop_on_error; 320 bool m_use_dummy; 321 }; 322 323 protected: 324 void DoExecute(Args &command, CommandReturnObject &result) override { 325 Target &target = m_options.m_use_dummy ? GetDummyTarget() : GetTarget(); 326 327 const BreakpointList &breakpoints = target.GetBreakpointList(); 328 size_t num_breakpoints = breakpoints.GetSize(); 329 330 if (num_breakpoints == 0) { 331 result.AppendError("No breakpoints exist to have commands added"); 332 return; 333 } 334 335 if (!m_func_options.GetName().empty()) { 336 m_options.m_use_one_liner = false; 337 if (!m_options.m_use_script_language) { 338 m_options.m_script_language = GetDebugger().GetScriptLanguage(); 339 m_options.m_use_script_language = true; 340 } 341 } 342 343 BreakpointIDList valid_bp_ids; 344 CommandObjectMultiwordBreakpoint::VerifyBreakpointOrLocationIDs( 345 command, target, result, &valid_bp_ids, 346 BreakpointName::Permissions::PermissionKinds::listPerm); 347 348 m_bp_options_vec.clear(); 349 350 if (result.Succeeded()) { 351 const size_t count = valid_bp_ids.GetSize(); 352 353 for (size_t i = 0; i < count; ++i) { 354 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex(i); 355 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) { 356 Breakpoint *bp = 357 target.GetBreakpointByID(cur_bp_id.GetBreakpointID()).get(); 358 if (cur_bp_id.GetLocationID() == LLDB_INVALID_BREAK_ID) { 359 // This breakpoint does not have an associated location. 360 m_bp_options_vec.push_back(bp->GetOptions()); 361 } else { 362 BreakpointLocationSP bp_loc_sp( 363 bp->FindLocationByID(cur_bp_id.GetLocationID())); 364 // This breakpoint does have an associated location. Get its 365 // breakpoint options. 366 if (bp_loc_sp) 367 m_bp_options_vec.push_back(bp_loc_sp->GetLocationOptions()); 368 } 369 } 370 } 371 372 // If we are using script language, get the script interpreter in order 373 // to set or collect command callback. Otherwise, call the methods 374 // associated with this object. 375 if (m_options.m_use_script_language) { 376 Status error; 377 ScriptInterpreter *script_interp = GetDebugger().GetScriptInterpreter( 378 /*can_create=*/true, m_options.m_script_language); 379 // Special handling for one-liner specified inline. 380 if (m_options.m_use_one_liner) { 381 error = script_interp->SetBreakpointCommandCallback( 382 m_bp_options_vec, m_options.m_one_liner.c_str()); 383 } else if (!m_func_options.GetName().empty()) { 384 error = script_interp->SetBreakpointCommandCallbackFunction( 385 m_bp_options_vec, m_func_options.GetName().c_str(), 386 m_func_options.GetStructuredData()); 387 } else { 388 script_interp->CollectDataForBreakpointCommandCallback( 389 m_bp_options_vec, result); 390 } 391 if (!error.Success()) 392 result.SetError(std::move(error)); 393 } else { 394 // Special handling for one-liner specified inline. 395 if (m_options.m_use_one_liner) 396 SetBreakpointCommandCallback(m_bp_options_vec, 397 m_options.m_one_liner.c_str()); 398 else 399 CollectDataForBreakpointCommandCallback(m_bp_options_vec, result); 400 } 401 } 402 } 403 404 private: 405 CommandOptions m_options; 406 OptionGroupPythonClassWithDict m_func_options; 407 OptionGroupOptions m_all_options; 408 409 std::vector<std::reference_wrapper<BreakpointOptions>> 410 m_bp_options_vec; // This stores the 411 // breakpoint options that 412 // we are currently 413 // collecting commands for. In the CollectData... calls we need to hand this 414 // off to the IOHandler, which may run asynchronously. So we have to have 415 // some way to keep it alive, and not leak it. Making it an ivar of the 416 // command object, which never goes away achieves this. Note that if we were 417 // able to run the same command concurrently in one interpreter we'd have to 418 // make this "per invocation". But there are many more reasons why it is not 419 // in general safe to do that in lldb at present, so it isn't worthwhile to 420 // come up with a more complex mechanism to address this particular weakness 421 // right now. 422 static const char *g_reader_instructions; 423 }; 424 425 const char *CommandObjectBreakpointCommandAdd::g_reader_instructions = 426 "Enter your debugger command(s). Type 'DONE' to end.\n"; 427 428 // CommandObjectBreakpointCommandDelete 429 430 #define LLDB_OPTIONS_breakpoint_command_delete 431 #include "CommandOptions.inc" 432 433 class CommandObjectBreakpointCommandDelete : public CommandObjectParsed { 434 public: 435 CommandObjectBreakpointCommandDelete(CommandInterpreter &interpreter) 436 : CommandObjectParsed(interpreter, "delete", 437 "Delete the set of commands from a breakpoint.", 438 nullptr) { 439 AddSimpleArgumentList(eArgTypeBreakpointID); 440 } 441 442 ~CommandObjectBreakpointCommandDelete() override = default; 443 444 Options *GetOptions() override { return &m_options; } 445 446 class CommandOptions : public Options { 447 public: 448 CommandOptions() = default; 449 450 ~CommandOptions() override = default; 451 452 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 453 ExecutionContext *execution_context) override { 454 Status error; 455 const int short_option = m_getopt_table[option_idx].val; 456 457 switch (short_option) { 458 case 'D': 459 m_use_dummy = true; 460 break; 461 462 default: 463 llvm_unreachable("Unimplemented option"); 464 } 465 466 return error; 467 } 468 469 void OptionParsingStarting(ExecutionContext *execution_context) override { 470 m_use_dummy = false; 471 } 472 473 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 474 return llvm::ArrayRef(g_breakpoint_command_delete_options); 475 } 476 477 // Instance variables to hold the values for command options. 478 bool m_use_dummy = false; 479 }; 480 481 protected: 482 void DoExecute(Args &command, CommandReturnObject &result) override { 483 Target &target = m_options.m_use_dummy ? GetDummyTarget() : GetTarget(); 484 485 const BreakpointList &breakpoints = target.GetBreakpointList(); 486 size_t num_breakpoints = breakpoints.GetSize(); 487 488 if (num_breakpoints == 0) { 489 result.AppendError("No breakpoints exist to have commands deleted"); 490 return; 491 } 492 493 if (command.empty()) { 494 result.AppendError( 495 "No breakpoint specified from which to delete the commands"); 496 return; 497 } 498 499 BreakpointIDList valid_bp_ids; 500 CommandObjectMultiwordBreakpoint::VerifyBreakpointOrLocationIDs( 501 command, target, result, &valid_bp_ids, 502 BreakpointName::Permissions::PermissionKinds::listPerm); 503 504 if (result.Succeeded()) { 505 const size_t count = valid_bp_ids.GetSize(); 506 for (size_t i = 0; i < count; ++i) { 507 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex(i); 508 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) { 509 Breakpoint *bp = 510 target.GetBreakpointByID(cur_bp_id.GetBreakpointID()).get(); 511 if (cur_bp_id.GetLocationID() != LLDB_INVALID_BREAK_ID) { 512 BreakpointLocationSP bp_loc_sp( 513 bp->FindLocationByID(cur_bp_id.GetLocationID())); 514 if (bp_loc_sp) 515 bp_loc_sp->ClearCallback(); 516 else { 517 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.%u.\n", 518 cur_bp_id.GetBreakpointID(), 519 cur_bp_id.GetLocationID()); 520 return; 521 } 522 } else { 523 bp->ClearCallback(); 524 } 525 } 526 } 527 } 528 } 529 530 private: 531 CommandOptions m_options; 532 }; 533 534 // CommandObjectBreakpointCommandList 535 536 class CommandObjectBreakpointCommandList : public CommandObjectParsed { 537 public: 538 CommandObjectBreakpointCommandList(CommandInterpreter &interpreter) 539 : CommandObjectParsed(interpreter, "list", 540 "List the script or set of commands to be " 541 "executed when the breakpoint is hit.", 542 nullptr, eCommandRequiresTarget) { 543 AddSimpleArgumentList(eArgTypeBreakpointID); 544 } 545 546 ~CommandObjectBreakpointCommandList() override = default; 547 548 protected: 549 void DoExecute(Args &command, CommandReturnObject &result) override { 550 Target &target = GetTarget(); 551 552 const BreakpointList &breakpoints = target.GetBreakpointList(); 553 size_t num_breakpoints = breakpoints.GetSize(); 554 555 if (num_breakpoints == 0) { 556 result.AppendError("No breakpoints exist for which to list commands"); 557 return; 558 } 559 560 if (command.empty()) { 561 result.AppendError( 562 "No breakpoint specified for which to list the commands"); 563 return; 564 } 565 566 BreakpointIDList valid_bp_ids; 567 CommandObjectMultiwordBreakpoint::VerifyBreakpointOrLocationIDs( 568 command, target, result, &valid_bp_ids, 569 BreakpointName::Permissions::PermissionKinds::listPerm); 570 571 if (result.Succeeded()) { 572 const size_t count = valid_bp_ids.GetSize(); 573 for (size_t i = 0; i < count; ++i) { 574 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex(i); 575 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) { 576 Breakpoint *bp = 577 target.GetBreakpointByID(cur_bp_id.GetBreakpointID()).get(); 578 579 if (bp) { 580 BreakpointLocationSP bp_loc_sp; 581 if (cur_bp_id.GetLocationID() != LLDB_INVALID_BREAK_ID) { 582 bp_loc_sp = bp->FindLocationByID(cur_bp_id.GetLocationID()); 583 if (!bp_loc_sp) { 584 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.%u.\n", 585 cur_bp_id.GetBreakpointID(), 586 cur_bp_id.GetLocationID()); 587 return; 588 } 589 } 590 591 StreamString id_str; 592 BreakpointID::GetCanonicalReference(&id_str, 593 cur_bp_id.GetBreakpointID(), 594 cur_bp_id.GetLocationID()); 595 const Baton *baton = nullptr; 596 if (bp_loc_sp) 597 baton = 598 bp_loc_sp 599 ->GetOptionsSpecifyingKind(BreakpointOptions::eCallback) 600 .GetBaton(); 601 else 602 baton = bp->GetOptions().GetBaton(); 603 604 if (baton) { 605 result.GetOutputStream().Printf("Breakpoint %s:\n", 606 id_str.GetData()); 607 baton->GetDescription(result.GetOutputStream().AsRawOstream(), 608 eDescriptionLevelFull, 609 result.GetOutputStream().GetIndentLevel() + 610 2); 611 } else { 612 result.AppendMessageWithFormat( 613 "Breakpoint %s does not have an associated command.\n", 614 id_str.GetData()); 615 } 616 } 617 result.SetStatus(eReturnStatusSuccessFinishResult); 618 } else { 619 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.\n", 620 cur_bp_id.GetBreakpointID()); 621 } 622 } 623 } 624 } 625 }; 626 627 // CommandObjectBreakpointCommand 628 629 CommandObjectBreakpointCommand::CommandObjectBreakpointCommand( 630 CommandInterpreter &interpreter) 631 : CommandObjectMultiword( 632 interpreter, "command", 633 "Commands for adding, removing and listing " 634 "LLDB commands executed when a breakpoint is " 635 "hit.", 636 "command <sub-command> [<sub-command-options>] <breakpoint-id>") { 637 CommandObjectSP add_command_object( 638 new CommandObjectBreakpointCommandAdd(interpreter)); 639 CommandObjectSP delete_command_object( 640 new CommandObjectBreakpointCommandDelete(interpreter)); 641 CommandObjectSP list_command_object( 642 new CommandObjectBreakpointCommandList(interpreter)); 643 644 add_command_object->SetCommandName("breakpoint command add"); 645 delete_command_object->SetCommandName("breakpoint command delete"); 646 list_command_object->SetCommandName("breakpoint command list"); 647 648 LoadSubCommand("add", add_command_object); 649 LoadSubCommand("delete", delete_command_object); 650 LoadSubCommand("list", list_command_object); 651 } 652 653 CommandObjectBreakpointCommand::~CommandObjectBreakpointCommand() = default; 654