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CommandInterpreter.cpp
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1 //===-- CommandInterpreter.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 <limits>
10 #include <memory>
11 #include <stdlib.h>
12 #include <string>
13 #include <vector>
14 
44 
45 #include "lldb/Core/Debugger.h"
47 #include "lldb/Core/StreamFile.h"
48 #include "lldb/Utility/Log.h"
50 #include "lldb/Utility/State.h"
51 #include "lldb/Utility/Stream.h"
52 #include "lldb/Utility/Timer.h"
53 
54 #include "lldb/Host/Config.h"
55 #if LLDB_ENABLE_LIBEDIT
56 #include "lldb/Host/Editline.h"
57 #endif
58 #include "lldb/Host/File.h"
59 #include "lldb/Host/FileCache.h"
60 #include "lldb/Host/Host.h"
61 #include "lldb/Host/HostInfo.h"
62 
69 #include "lldb/Utility/Args.h"
70 
71 #include "lldb/Target/Language.h"
72 #include "lldb/Target/Process.h"
73 #include "lldb/Target/StopInfo.h"
74 #include "lldb/Target/TargetList.h"
75 #include "lldb/Target/Thread.h"
77 
78 #include "llvm/ADT/STLExtras.h"
79 #include "llvm/ADT/ScopeExit.h"
80 #include "llvm/ADT/SmallString.h"
81 #include "llvm/Support/FormatAdapters.h"
82 #include "llvm/Support/Path.h"
83 #include "llvm/Support/PrettyStackTrace.h"
84 #include "llvm/Support/ScopedPrinter.h"
85 
86 using namespace lldb;
87 using namespace lldb_private;
88 
89 static const char *k_white_space = " \t\v";
90 
91 static constexpr const char *InitFileWarning =
92  "There is a .lldbinit file in the current directory which is not being "
93  "read.\n"
94  "To silence this warning without sourcing in the local .lldbinit,\n"
95  "add the following to the lldbinit file in your home directory:\n"
96  " settings set target.load-cwd-lldbinit false\n"
97  "To allow lldb to source .lldbinit files in the current working "
98  "directory,\n"
99  "set the value of this variable to true. Only do so if you understand "
100  "and\n"
101  "accept the security risk.";
102 
103 #define LLDB_PROPERTIES_interpreter
104 #include "InterpreterProperties.inc"
105 
106 enum {
107 #define LLDB_PROPERTIES_interpreter
108 #include "InterpreterPropertiesEnum.inc"
109 };
110 
111 ConstString &CommandInterpreter::GetStaticBroadcasterClass() {
112  static ConstString class_name("lldb.commandInterpreter");
113  return class_name;
114 }
115 
116 CommandInterpreter::CommandInterpreter(Debugger &debugger,
117  bool synchronous_execution)
118  : Broadcaster(debugger.GetBroadcasterManager(),
119  CommandInterpreter::GetStaticBroadcasterClass().AsCString()),
120  Properties(OptionValuePropertiesSP(
121  new OptionValueProperties(ConstString("interpreter")))),
123  m_debugger(debugger), m_synchronous_execution(true),
124  m_skip_lldbinit_files(false), m_skip_app_init_files(false),
125  m_comment_char('#'), m_batch_command_mode(false),
126  m_truncation_warning(eNoTruncation), m_command_source_depth(0) {
127  SetEventName(eBroadcastBitThreadShouldExit, "thread-should-exit");
128  SetEventName(eBroadcastBitResetPrompt, "reset-prompt");
130  SetSynchronous(synchronous_execution);
132  m_collection_sp->Initialize(g_interpreter_properties);
133 }
134 
136  const uint32_t idx = ePropertyExpandRegexAliases;
137  return m_collection_sp->GetPropertyAtIndexAsBoolean(
138  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
139 }
140 
142  const uint32_t idx = ePropertyPromptOnQuit;
143  return m_collection_sp->GetPropertyAtIndexAsBoolean(
144  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
145 }
146 
148  const uint32_t idx = ePropertyPromptOnQuit;
149  m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, enable);
150 }
151 
153  const uint32_t idx = ePropertySaveSessionOnQuit;
154  return m_collection_sp->GetPropertyAtIndexAsBoolean(
155  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
156 }
157 
159  const uint32_t idx = ePropertySaveSessionOnQuit;
160  m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, enable);
161 }
162 
164  const uint32_t idx = ePropertyEchoCommands;
165  return m_collection_sp->GetPropertyAtIndexAsBoolean(
166  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
167 }
168 
170  const uint32_t idx = ePropertyEchoCommands;
171  m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, enable);
172 }
173 
175  const uint32_t idx = ePropertyEchoCommentCommands;
176  return m_collection_sp->GetPropertyAtIndexAsBoolean(
177  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
178 }
179 
181  const uint32_t idx = ePropertyEchoCommentCommands;
182  m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, enable);
183 }
184 
186  m_allow_exit_code = allow;
187  if (!allow)
188  m_quit_exit_code.reset();
189 }
190 
192  if (!m_allow_exit_code)
193  return false;
194  m_quit_exit_code = exit_code;
195  return true;
196 }
197 
198 int CommandInterpreter::GetQuitExitCode(bool &exited) const {
199  exited = m_quit_exit_code.hasValue();
200  if (exited)
201  return *m_quit_exit_code;
202  return 0;
203 }
204 
205 void CommandInterpreter::ResolveCommand(const char *command_line,
206  CommandReturnObject &result) {
207  std::string command = command_line;
208  if (ResolveCommandImpl(command, result) != nullptr) {
209  result.AppendMessageWithFormat("%s", command.c_str());
211  }
212 }
213 
215  const uint32_t idx = ePropertyStopCmdSourceOnError;
216  return m_collection_sp->GetPropertyAtIndexAsBoolean(
217  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
218 }
219 
221  const uint32_t idx = ePropertySpaceReplPrompts;
222  return m_collection_sp->GetPropertyAtIndexAsBoolean(
223  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
224 }
225 
227  const uint32_t idx = ePropertyRepeatPreviousCommand;
228  return m_collection_sp->GetPropertyAtIndexAsBoolean(
229  nullptr, idx, g_interpreter_properties[idx].default_uint_value != 0);
230 }
231 
234 
236 
238 
239  // An alias arguments vector to reuse - reset it before use...
240  OptionArgVectorSP alias_arguments_vector_sp(new OptionArgVector);
241 
242  // Set up some initial aliases.
243  CommandObjectSP cmd_obj_sp = GetCommandSPExact("quit");
244  if (cmd_obj_sp) {
245  AddAlias("q", cmd_obj_sp);
246  AddAlias("exit", cmd_obj_sp);
247  }
248 
249  cmd_obj_sp = GetCommandSPExact("_regexp-attach");
250  if (cmd_obj_sp)
251  AddAlias("attach", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
252 
253  cmd_obj_sp = GetCommandSPExact("process detach");
254  if (cmd_obj_sp) {
255  AddAlias("detach", cmd_obj_sp);
256  }
257 
258  cmd_obj_sp = GetCommandSPExact("process continue");
259  if (cmd_obj_sp) {
260  AddAlias("c", cmd_obj_sp);
261  AddAlias("continue", cmd_obj_sp);
262  }
263 
264  cmd_obj_sp = GetCommandSPExact("_regexp-break");
265  if (cmd_obj_sp)
266  AddAlias("b", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
267 
268  cmd_obj_sp = GetCommandSPExact("_regexp-tbreak");
269  if (cmd_obj_sp)
270  AddAlias("tbreak", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
271 
272  cmd_obj_sp = GetCommandSPExact("thread step-inst");
273  if (cmd_obj_sp) {
274  AddAlias("stepi", cmd_obj_sp);
275  AddAlias("si", cmd_obj_sp);
276  }
277 
278  cmd_obj_sp = GetCommandSPExact("thread step-inst-over");
279  if (cmd_obj_sp) {
280  AddAlias("nexti", cmd_obj_sp);
281  AddAlias("ni", cmd_obj_sp);
282  }
283 
284  cmd_obj_sp = GetCommandSPExact("thread step-in");
285  if (cmd_obj_sp) {
286  AddAlias("s", cmd_obj_sp);
287  AddAlias("step", cmd_obj_sp);
288  CommandAlias *sif_alias = AddAlias(
289  "sif", cmd_obj_sp, "--end-linenumber block --step-in-target %1");
290  if (sif_alias) {
291  sif_alias->SetHelp("Step through the current block, stopping if you step "
292  "directly into a function whose name matches the "
293  "TargetFunctionName.");
294  sif_alias->SetSyntax("sif <TargetFunctionName>");
295  }
296  }
297 
298  cmd_obj_sp = GetCommandSPExact("thread step-over");
299  if (cmd_obj_sp) {
300  AddAlias("n", cmd_obj_sp);
301  AddAlias("next", cmd_obj_sp);
302  }
303 
304  cmd_obj_sp = GetCommandSPExact("thread step-out");
305  if (cmd_obj_sp) {
306  AddAlias("finish", cmd_obj_sp);
307  }
308 
309  cmd_obj_sp = GetCommandSPExact("frame select");
310  if (cmd_obj_sp) {
311  AddAlias("f", cmd_obj_sp);
312  }
313 
314  cmd_obj_sp = GetCommandSPExact("thread select");
315  if (cmd_obj_sp) {
316  AddAlias("t", cmd_obj_sp);
317  }
318 
319  cmd_obj_sp = GetCommandSPExact("_regexp-jump");
320  if (cmd_obj_sp) {
321  AddAlias("j", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
322  AddAlias("jump", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
323  }
324 
325  cmd_obj_sp = GetCommandSPExact("_regexp-list");
326  if (cmd_obj_sp) {
327  AddAlias("l", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
328  AddAlias("list", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
329  }
330 
331  cmd_obj_sp = GetCommandSPExact("_regexp-env");
332  if (cmd_obj_sp)
333  AddAlias("env", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
334 
335  cmd_obj_sp = GetCommandSPExact("memory read");
336  if (cmd_obj_sp)
337  AddAlias("x", cmd_obj_sp);
338 
339  cmd_obj_sp = GetCommandSPExact("_regexp-up");
340  if (cmd_obj_sp)
341  AddAlias("up", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
342 
343  cmd_obj_sp = GetCommandSPExact("_regexp-down");
344  if (cmd_obj_sp)
345  AddAlias("down", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
346 
347  cmd_obj_sp = GetCommandSPExact("_regexp-display");
348  if (cmd_obj_sp)
349  AddAlias("display", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
350 
351  cmd_obj_sp = GetCommandSPExact("disassemble");
352  if (cmd_obj_sp)
353  AddAlias("dis", cmd_obj_sp);
354 
355  cmd_obj_sp = GetCommandSPExact("disassemble");
356  if (cmd_obj_sp)
357  AddAlias("di", cmd_obj_sp);
358 
359  cmd_obj_sp = GetCommandSPExact("_regexp-undisplay");
360  if (cmd_obj_sp)
361  AddAlias("undisplay", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
362 
363  cmd_obj_sp = GetCommandSPExact("_regexp-bt");
364  if (cmd_obj_sp)
365  AddAlias("bt", cmd_obj_sp)->SetSyntax(cmd_obj_sp->GetSyntax());
366 
367  cmd_obj_sp = GetCommandSPExact("target create");
368  if (cmd_obj_sp)
369  AddAlias("file", cmd_obj_sp);
370 
371  cmd_obj_sp = GetCommandSPExact("target modules");
372  if (cmd_obj_sp)
373  AddAlias("image", cmd_obj_sp);
374 
375  alias_arguments_vector_sp = std::make_shared<OptionArgVector>();
376 
377  cmd_obj_sp = GetCommandSPExact("expression");
378  if (cmd_obj_sp) {
379  AddAlias("p", cmd_obj_sp, "--")->SetHelpLong("");
380  AddAlias("print", cmd_obj_sp, "--")->SetHelpLong("");
381  AddAlias("call", cmd_obj_sp, "--")->SetHelpLong("");
382  if (auto *po = AddAlias("po", cmd_obj_sp, "-O --")) {
383  po->SetHelp("Evaluate an expression on the current thread. Displays any "
384  "returned value with formatting "
385  "controlled by the type's author.");
386  po->SetHelpLong("");
387  }
388  CommandAlias *parray_alias =
389  AddAlias("parray", cmd_obj_sp, "--element-count %1 --");
390  if (parray_alias) {
391  parray_alias->SetHelp
392  ("parray <COUNT> <EXPRESSION> -- lldb will evaluate EXPRESSION "
393  "to get a typed-pointer-to-an-array in memory, and will display "
394  "COUNT elements of that type from the array.");
395  parray_alias->SetHelpLong("");
396  }
397  CommandAlias *poarray_alias = AddAlias("poarray", cmd_obj_sp,
398  "--object-description --element-count %1 --");
399  if (poarray_alias) {
400  poarray_alias->SetHelp("poarray <COUNT> <EXPRESSION> -- lldb will "
401  "evaluate EXPRESSION to get the address of an array of COUNT "
402  "objects in memory, and will call po on them.");
403  poarray_alias->SetHelpLong("");
404  }
405  }
406 
407  cmd_obj_sp = GetCommandSPExact("platform shell");
408  if (cmd_obj_sp) {
409  CommandAlias *shell_alias = AddAlias("shell", cmd_obj_sp, " --host --");
410  if (shell_alias) {
411  shell_alias->SetHelp("Run a shell command on the host.");
412  shell_alias->SetHelpLong("");
413  shell_alias->SetSyntax("shell <shell-command>");
414  }
415  }
416 
417  cmd_obj_sp = GetCommandSPExact("process kill");
418  if (cmd_obj_sp) {
419  AddAlias("kill", cmd_obj_sp);
420  }
421 
422  cmd_obj_sp = GetCommandSPExact("process launch");
423  if (cmd_obj_sp) {
424  alias_arguments_vector_sp = std::make_shared<OptionArgVector>();
425 #if defined(__APPLE__)
426 #if defined(TARGET_OS_IPHONE)
427  AddAlias("r", cmd_obj_sp, "--");
428  AddAlias("run", cmd_obj_sp, "--");
429 #else
430  AddAlias("r", cmd_obj_sp, "--shell-expand-args true --");
431  AddAlias("run", cmd_obj_sp, "--shell-expand-args true --");
432 #endif
433 #else
434  StreamString defaultshell;
435  defaultshell.Printf("--shell=%s --",
436  HostInfo::GetDefaultShell().GetPath().c_str());
437  AddAlias("r", cmd_obj_sp, defaultshell.GetString());
438  AddAlias("run", cmd_obj_sp, defaultshell.GetString());
439 #endif
440  }
441 
442  cmd_obj_sp = GetCommandSPExact("target symbols add");
443  if (cmd_obj_sp) {
444  AddAlias("add-dsym", cmd_obj_sp);
445  }
446 
447  cmd_obj_sp = GetCommandSPExact("breakpoint set");
448  if (cmd_obj_sp) {
449  AddAlias("rbreak", cmd_obj_sp, "--func-regex %1");
450  }
451 
452  cmd_obj_sp = GetCommandSPExact("frame variable");
453  if (cmd_obj_sp) {
454  AddAlias("v", cmd_obj_sp);
455  AddAlias("var", cmd_obj_sp);
456  AddAlias("vo", cmd_obj_sp, "--object-description");
457  }
458 
459  cmd_obj_sp = GetCommandSPExact("register");
460  if (cmd_obj_sp) {
461  AddAlias("re", cmd_obj_sp);
462  }
463 
464  cmd_obj_sp = GetCommandSPExact("session history");
465  if (cmd_obj_sp) {
466  AddAlias("history", cmd_obj_sp);
467  }
468 }
469 
471  m_command_io_handler_sp.reset();
472 }
473 
475  // This function has not yet been implemented.
476 
477  // Look for any embedded script command
478  // If found,
479  // get interpreter object from the command dictionary,
480  // call execute_one_command on it,
481  // get the results as a string,
482  // substitute that string for current stuff.
483 
484  return arg;
485 }
486 
487 #define REGISTER_COMMAND_OBJECT(NAME, CLASS) \
488  m_command_dict[NAME] = std::make_shared<CLASS>(*this);
489 
492 
521 
522  // clang-format off
523  const char *break_regexes[][2] = {
524  {"^(.*[^[:space:]])[[:space:]]*:[[:space:]]*([[:digit:]]+)[[:space:]]*:[[:space:]]*([[:digit:]]+)[[:space:]]*$",
525  "breakpoint set --file '%1' --line %2 --column %3"},
526  {"^(.*[^[:space:]])[[:space:]]*:[[:space:]]*([[:digit:]]+)[[:space:]]*$",
527  "breakpoint set --file '%1' --line %2"},
528  {"^/([^/]+)/$", "breakpoint set --source-pattern-regexp '%1'"},
529  {"^([[:digit:]]+)[[:space:]]*$", "breakpoint set --line %1"},
530  {"^\\*?(0x[[:xdigit:]]+)[[:space:]]*$", "breakpoint set --address %1"},
531  {"^[\"']?([-+]?\\[.*\\])[\"']?[[:space:]]*$",
532  "breakpoint set --name '%1'"},
533  {"^(-.*)$", "breakpoint set %1"},
534  {"^(.*[^[:space:]])`(.*[^[:space:]])[[:space:]]*$",
535  "breakpoint set --name '%2' --shlib '%1'"},
536  {"^\\&(.*[^[:space:]])[[:space:]]*$",
537  "breakpoint set --name '%1' --skip-prologue=0"},
538  {"^[\"']?(.*[^[:space:]\"'])[\"']?[[:space:]]*$",
539  "breakpoint set --name '%1'"}};
540  // clang-format on
541 
542  size_t num_regexes = llvm::array_lengthof(break_regexes);
543 
544  std::unique_ptr<CommandObjectRegexCommand> break_regex_cmd_up(
546  *this, "_regexp-break",
547  "Set a breakpoint using one of several shorthand formats.",
548  "\n"
549  "_regexp-break <filename>:<linenum>:<colnum>\n"
550  " main.c:12:21 // Break at line 12 and column "
551  "21 of main.c\n\n"
552  "_regexp-break <filename>:<linenum>\n"
553  " main.c:12 // Break at line 12 of "
554  "main.c\n\n"
555  "_regexp-break <linenum>\n"
556  " 12 // Break at line 12 of current "
557  "file\n\n"
558  "_regexp-break 0x<address>\n"
559  " 0x1234000 // Break at address "
560  "0x1234000\n\n"
561  "_regexp-break <name>\n"
562  " main // Break in 'main' after the "
563  "prologue\n\n"
564  "_regexp-break &<name>\n"
565  " &main // Break at first instruction "
566  "in 'main'\n\n"
567  "_regexp-break <module>`<name>\n"
568  " libc.so`malloc // Break in 'malloc' from "
569  "'libc.so'\n\n"
570  "_regexp-break /<source-regex>/\n"
571  " /break here/ // Break on source lines in "
572  "current file\n"
573  " // containing text 'break "
574  "here'.\n",
575  3,
578  false));
579 
580  if (break_regex_cmd_up) {
581  bool success = true;
582  for (size_t i = 0; i < num_regexes; i++) {
583  success = break_regex_cmd_up->AddRegexCommand(break_regexes[i][0],
584  break_regexes[i][1]);
585  if (!success)
586  break;
587  }
588  success =
589  break_regex_cmd_up->AddRegexCommand("^$", "breakpoint list --full");
590 
591  if (success) {
592  CommandObjectSP break_regex_cmd_sp(break_regex_cmd_up.release());
593  m_command_dict[std::string(break_regex_cmd_sp->GetCommandName())] =
594  break_regex_cmd_sp;
595  }
596  }
597 
598  std::unique_ptr<CommandObjectRegexCommand> tbreak_regex_cmd_up(
600  *this, "_regexp-tbreak",
601  "Set a one-shot breakpoint using one of several shorthand formats.",
602  "\n"
603  "_regexp-break <filename>:<linenum>:<colnum>\n"
604  " main.c:12:21 // Break at line 12 and column "
605  "21 of main.c\n\n"
606  "_regexp-break <filename>:<linenum>\n"
607  " main.c:12 // Break at line 12 of "
608  "main.c\n\n"
609  "_regexp-break <linenum>\n"
610  " 12 // Break at line 12 of current "
611  "file\n\n"
612  "_regexp-break 0x<address>\n"
613  " 0x1234000 // Break at address "
614  "0x1234000\n\n"
615  "_regexp-break <name>\n"
616  " main // Break in 'main' after the "
617  "prologue\n\n"
618  "_regexp-break &<name>\n"
619  " &main // Break at first instruction "
620  "in 'main'\n\n"
621  "_regexp-break <module>`<name>\n"
622  " libc.so`malloc // Break in 'malloc' from "
623  "'libc.so'\n\n"
624  "_regexp-break /<source-regex>/\n"
625  " /break here/ // Break on source lines in "
626  "current file\n"
627  " // containing text 'break "
628  "here'.\n",
629  2,
632  false));
633 
634  if (tbreak_regex_cmd_up) {
635  bool success = true;
636  for (size_t i = 0; i < num_regexes; i++) {
637  std::string command = break_regexes[i][1];
638  command += " -o 1";
639  success =
640  tbreak_regex_cmd_up->AddRegexCommand(break_regexes[i][0], command);
641  if (!success)
642  break;
643  }
644  success =
645  tbreak_regex_cmd_up->AddRegexCommand("^$", "breakpoint list --full");
646 
647  if (success) {
648  CommandObjectSP tbreak_regex_cmd_sp(tbreak_regex_cmd_up.release());
649  m_command_dict[std::string(tbreak_regex_cmd_sp->GetCommandName())] =
650  tbreak_regex_cmd_sp;
651  }
652  }
653 
654  std::unique_ptr<CommandObjectRegexCommand> attach_regex_cmd_up(
656  *this, "_regexp-attach", "Attach to process by ID or name.",
657  "_regexp-attach <pid> | <process-name>", 2, 0, false));
658  if (attach_regex_cmd_up) {
659  if (attach_regex_cmd_up->AddRegexCommand("^([0-9]+)[[:space:]]*$",
660  "process attach --pid %1") &&
661  attach_regex_cmd_up->AddRegexCommand(
662  "^(-.*|.* -.*)$", "process attach %1") && // Any options that are
663  // specified get passed to
664  // 'process attach'
665  attach_regex_cmd_up->AddRegexCommand("^(.+)$",
666  "process attach --name '%1'") &&
667  attach_regex_cmd_up->AddRegexCommand("^$", "process attach")) {
668  CommandObjectSP attach_regex_cmd_sp(attach_regex_cmd_up.release());
669  m_command_dict[std::string(attach_regex_cmd_sp->GetCommandName())] =
670  attach_regex_cmd_sp;
671  }
672  }
673 
674  std::unique_ptr<CommandObjectRegexCommand> down_regex_cmd_up(
675  new CommandObjectRegexCommand(*this, "_regexp-down",
676  "Select a newer stack frame. Defaults to "
677  "moving one frame, a numeric argument can "
678  "specify an arbitrary number.",
679  "_regexp-down [<count>]", 2, 0, false));
680  if (down_regex_cmd_up) {
681  if (down_regex_cmd_up->AddRegexCommand("^$", "frame select -r -1") &&
682  down_regex_cmd_up->AddRegexCommand("^([0-9]+)$",
683  "frame select -r -%1")) {
684  CommandObjectSP down_regex_cmd_sp(down_regex_cmd_up.release());
685  m_command_dict[std::string(down_regex_cmd_sp->GetCommandName())] =
686  down_regex_cmd_sp;
687  }
688  }
689 
690  std::unique_ptr<CommandObjectRegexCommand> up_regex_cmd_up(
692  *this, "_regexp-up",
693  "Select an older stack frame. Defaults to moving one "
694  "frame, a numeric argument can specify an arbitrary number.",
695  "_regexp-up [<count>]", 2, 0, false));
696  if (up_regex_cmd_up) {
697  if (up_regex_cmd_up->AddRegexCommand("^$", "frame select -r 1") &&
698  up_regex_cmd_up->AddRegexCommand("^([0-9]+)$", "frame select -r %1")) {
699  CommandObjectSP up_regex_cmd_sp(up_regex_cmd_up.release());
700  m_command_dict[std::string(up_regex_cmd_sp->GetCommandName())] =
701  up_regex_cmd_sp;
702  }
703  }
704 
705  std::unique_ptr<CommandObjectRegexCommand> display_regex_cmd_up(
707  *this, "_regexp-display",
708  "Evaluate an expression at every stop (see 'help target stop-hook'.)",
709  "_regexp-display expression", 2, 0, false));
710  if (display_regex_cmd_up) {
711  if (display_regex_cmd_up->AddRegexCommand(
712  "^(.+)$", "target stop-hook add -o \"expr -- %1\"")) {
713  CommandObjectSP display_regex_cmd_sp(display_regex_cmd_up.release());
714  m_command_dict[std::string(display_regex_cmd_sp->GetCommandName())] =
715  display_regex_cmd_sp;
716  }
717  }
718 
719  std::unique_ptr<CommandObjectRegexCommand> undisplay_regex_cmd_up(
720  new CommandObjectRegexCommand(*this, "_regexp-undisplay",
721  "Stop displaying expression at every "
722  "stop (specified by stop-hook index.)",
723  "_regexp-undisplay stop-hook-number", 2, 0,
724  false));
725  if (undisplay_regex_cmd_up) {
726  if (undisplay_regex_cmd_up->AddRegexCommand("^([0-9]+)$",
727  "target stop-hook delete %1")) {
728  CommandObjectSP undisplay_regex_cmd_sp(undisplay_regex_cmd_up.release());
729  m_command_dict[std::string(undisplay_regex_cmd_sp->GetCommandName())] =
730  undisplay_regex_cmd_sp;
731  }
732  }
733 
734  std::unique_ptr<CommandObjectRegexCommand> connect_gdb_remote_cmd_up(
736  *this, "gdb-remote",
737  "Connect to a process via remote GDB server. "
738  "If no host is specifed, localhost is assumed.",
739  "gdb-remote [<hostname>:]<portnum>", 2, 0, false));
740  if (connect_gdb_remote_cmd_up) {
741  if (connect_gdb_remote_cmd_up->AddRegexCommand(
742  "^([^:]+|\\[[0-9a-fA-F:]+.*\\]):([0-9]+)$",
743  "process connect --plugin gdb-remote connect://%1:%2") &&
744  connect_gdb_remote_cmd_up->AddRegexCommand(
745  "^([[:digit:]]+)$",
746  "process connect --plugin gdb-remote connect://localhost:%1")) {
747  CommandObjectSP command_sp(connect_gdb_remote_cmd_up.release());
748  m_command_dict[std::string(command_sp->GetCommandName())] = command_sp;
749  }
750  }
751 
752  std::unique_ptr<CommandObjectRegexCommand> connect_kdp_remote_cmd_up(
754  *this, "kdp-remote",
755  "Connect to a process via remote KDP server. "
756  "If no UDP port is specified, port 41139 is "
757  "assumed.",
758  "kdp-remote <hostname>[:<portnum>]", 2, 0, false));
759  if (connect_kdp_remote_cmd_up) {
760  if (connect_kdp_remote_cmd_up->AddRegexCommand(
761  "^([^:]+:[[:digit:]]+)$",
762  "process connect --plugin kdp-remote udp://%1") &&
763  connect_kdp_remote_cmd_up->AddRegexCommand(
764  "^(.+)$", "process connect --plugin kdp-remote udp://%1:41139")) {
765  CommandObjectSP command_sp(connect_kdp_remote_cmd_up.release());
766  m_command_dict[std::string(command_sp->GetCommandName())] = command_sp;
767  }
768  }
769 
770  std::unique_ptr<CommandObjectRegexCommand> bt_regex_cmd_up(
772  *this, "_regexp-bt",
773  "Show the current thread's call stack. Any numeric argument "
774  "displays at most that many "
775  "frames. The argument 'all' displays all threads. Use 'settings"
776  " set frame-format' to customize the printing of individual frames "
777  "and 'settings set thread-format' to customize the thread header.",
778  "bt [<digit> | all]", 2, 0, false));
779  if (bt_regex_cmd_up) {
780  // accept but don't document "bt -c <number>" -- before bt was a regex
781  // command if you wanted to backtrace three frames you would do "bt -c 3"
782  // but the intention is to have this emulate the gdb "bt" command and so
783  // now "bt 3" is the preferred form, in line with gdb.
784  if (bt_regex_cmd_up->AddRegexCommand("^([[:digit:]]+)[[:space:]]*$",
785  "thread backtrace -c %1") &&
786  bt_regex_cmd_up->AddRegexCommand("^-c ([[:digit:]]+)[[:space:]]*$",
787  "thread backtrace -c %1") &&
788  bt_regex_cmd_up->AddRegexCommand("^all[[:space:]]*$", "thread backtrace all") &&
789  bt_regex_cmd_up->AddRegexCommand("^[[:space:]]*$", "thread backtrace")) {
790  CommandObjectSP command_sp(bt_regex_cmd_up.release());
791  m_command_dict[std::string(command_sp->GetCommandName())] = command_sp;
792  }
793  }
794 
795  std::unique_ptr<CommandObjectRegexCommand> list_regex_cmd_up(
797  *this, "_regexp-list",
798  "List relevant source code using one of several shorthand formats.",
799  "\n"
800  "_regexp-list <file>:<line> // List around specific file/line\n"
801  "_regexp-list <line> // List current file around specified "
802  "line\n"
803  "_regexp-list <function-name> // List specified function\n"
804  "_regexp-list 0x<address> // List around specified address\n"
805  "_regexp-list -[<count>] // List previous <count> lines\n"
806  "_regexp-list // List subsequent lines",
808  if (list_regex_cmd_up) {
809  if (list_regex_cmd_up->AddRegexCommand("^([0-9]+)[[:space:]]*$",
810  "source list --line %1") &&
811  list_regex_cmd_up->AddRegexCommand(
812  "^(.*[^[:space:]])[[:space:]]*:[[:space:]]*([[:digit:]]+)[[:space:]"
813  "]*$",
814  "source list --file '%1' --line %2") &&
815  list_regex_cmd_up->AddRegexCommand(
816  "^\\*?(0x[[:xdigit:]]+)[[:space:]]*$",
817  "source list --address %1") &&
818  list_regex_cmd_up->AddRegexCommand("^-[[:space:]]*$",
819  "source list --reverse") &&
820  list_regex_cmd_up->AddRegexCommand(
821  "^-([[:digit:]]+)[[:space:]]*$",
822  "source list --reverse --count %1") &&
823  list_regex_cmd_up->AddRegexCommand("^(.+)$",
824  "source list --name \"%1\"") &&
825  list_regex_cmd_up->AddRegexCommand("^$", "source list")) {
826  CommandObjectSP list_regex_cmd_sp(list_regex_cmd_up.release());
827  m_command_dict[std::string(list_regex_cmd_sp->GetCommandName())] =
828  list_regex_cmd_sp;
829  }
830  }
831 
832  std::unique_ptr<CommandObjectRegexCommand> env_regex_cmd_up(
834  *this, "_regexp-env",
835  "Shorthand for viewing and setting environment variables.",
836  "\n"
837  "_regexp-env // Show environment\n"
838  "_regexp-env <name>=<value> // Set an environment variable",
839  2, 0, false));
840  if (env_regex_cmd_up) {
841  if (env_regex_cmd_up->AddRegexCommand("^$",
842  "settings show target.env-vars") &&
843  env_regex_cmd_up->AddRegexCommand("^([A-Za-z_][A-Za-z_0-9]*=.*)$",
844  "settings set target.env-vars %1")) {
845  CommandObjectSP env_regex_cmd_sp(env_regex_cmd_up.release());
846  m_command_dict[std::string(env_regex_cmd_sp->GetCommandName())] =
847  env_regex_cmd_sp;
848  }
849  }
850 
851  std::unique_ptr<CommandObjectRegexCommand> jump_regex_cmd_up(
853  *this, "_regexp-jump", "Set the program counter to a new address.",
854  "\n"
855  "_regexp-jump <line>\n"
856  "_regexp-jump +<line-offset> | -<line-offset>\n"
857  "_regexp-jump <file>:<line>\n"
858  "_regexp-jump *<addr>\n",
859  2, 0, false));
860  if (jump_regex_cmd_up) {
861  if (jump_regex_cmd_up->AddRegexCommand("^\\*(.*)$",
862  "thread jump --addr %1") &&
863  jump_regex_cmd_up->AddRegexCommand("^([0-9]+)$",
864  "thread jump --line %1") &&
865  jump_regex_cmd_up->AddRegexCommand("^([^:]+):([0-9]+)$",
866  "thread jump --file %1 --line %2") &&
867  jump_regex_cmd_up->AddRegexCommand("^([+\\-][0-9]+)$",
868  "thread jump --by %1")) {
869  CommandObjectSP jump_regex_cmd_sp(jump_regex_cmd_up.release());
870  m_command_dict[std::string(jump_regex_cmd_sp->GetCommandName())] =
871  jump_regex_cmd_sp;
872  }
873  }
874 }
875 
877  const char *cmd_str, bool include_aliases, StringList &matches,
878  StringList &descriptions) {
880  &descriptions);
881 
882  if (include_aliases) {
884  &descriptions);
885  }
886 
887  return matches.GetSize();
888 }
889 
890 CommandObjectSP
891 CommandInterpreter::GetCommandSP(llvm::StringRef cmd_str, bool include_aliases,
892  bool exact, StringList *matches,
893  StringList *descriptions) const {
894  CommandObjectSP command_sp;
895 
896  std::string cmd = std::string(cmd_str);
897 
898  if (HasCommands()) {
899  auto pos = m_command_dict.find(cmd);
900  if (pos != m_command_dict.end())
901  command_sp = pos->second;
902  }
903 
904  if (include_aliases && HasAliases()) {
905  auto alias_pos = m_alias_dict.find(cmd);
906  if (alias_pos != m_alias_dict.end())
907  command_sp = alias_pos->second;
908  }
909 
910  if (HasUserCommands()) {
911  auto pos = m_user_dict.find(cmd);
912  if (pos != m_user_dict.end())
913  command_sp = pos->second;
914  }
915 
916  if (!exact && !command_sp) {
917  // We will only get into here if we didn't find any exact matches.
918 
919  CommandObjectSP user_match_sp, alias_match_sp, real_match_sp;
920 
921  StringList local_matches;
922  if (matches == nullptr)
923  matches = &local_matches;
924 
925  unsigned int num_cmd_matches = 0;
926  unsigned int num_alias_matches = 0;
927  unsigned int num_user_matches = 0;
928 
929  // Look through the command dictionaries one by one, and if we get only one
930  // match from any of them in toto, then return that, otherwise return an
931  // empty CommandObjectSP and the list of matches.
932 
933  if (HasCommands()) {
934  num_cmd_matches = AddNamesMatchingPartialString(m_command_dict, cmd_str,
935  *matches, descriptions);
936  }
937 
938  if (num_cmd_matches == 1) {
939  cmd.assign(matches->GetStringAtIndex(0));
940  auto pos = m_command_dict.find(cmd);
941  if (pos != m_command_dict.end())
942  real_match_sp = pos->second;
943  }
944 
945  if (include_aliases && HasAliases()) {
946  num_alias_matches = AddNamesMatchingPartialString(m_alias_dict, cmd_str,
947  *matches, descriptions);
948  }
949 
950  if (num_alias_matches == 1) {
951  cmd.assign(matches->GetStringAtIndex(num_cmd_matches));
952  auto alias_pos = m_alias_dict.find(cmd);
953  if (alias_pos != m_alias_dict.end())
954  alias_match_sp = alias_pos->second;
955  }
956 
957  if (HasUserCommands()) {
958  num_user_matches = AddNamesMatchingPartialString(m_user_dict, cmd_str,
959  *matches, descriptions);
960  }
961 
962  if (num_user_matches == 1) {
963  cmd.assign(
964  matches->GetStringAtIndex(num_cmd_matches + num_alias_matches));
965 
966  auto pos = m_user_dict.find(cmd);
967  if (pos != m_user_dict.end())
968  user_match_sp = pos->second;
969  }
970 
971  // If we got exactly one match, return that, otherwise return the match
972  // list.
973 
974  if (num_user_matches + num_cmd_matches + num_alias_matches == 1) {
975  if (num_cmd_matches)
976  return real_match_sp;
977  else if (num_alias_matches)
978  return alias_match_sp;
979  else
980  return user_match_sp;
981  }
982  } else if (matches && command_sp) {
983  matches->AppendString(cmd_str);
984  if (descriptions)
985  descriptions->AppendString(command_sp->GetHelp());
986  }
987 
988  return command_sp;
989 }
990 
991 bool CommandInterpreter::AddCommand(llvm::StringRef name,
992  const lldb::CommandObjectSP &cmd_sp,
993  bool can_replace) {
994  if (cmd_sp.get())
995  lldbassert((this == &cmd_sp->GetCommandInterpreter()) &&
996  "tried to add a CommandObject from a different interpreter");
997 
998  if (name.empty())
999  return false;
1000 
1001  std::string name_sstr(name);
1002  auto name_iter = m_command_dict.find(name_sstr);
1003  if (name_iter != m_command_dict.end()) {
1004  if (!can_replace || !name_iter->second->IsRemovable())
1005  return false;
1006  name_iter->second = cmd_sp;
1007  } else {
1008  m_command_dict[name_sstr] = cmd_sp;
1009  }
1010  return true;
1011 }
1012 
1013 bool CommandInterpreter::AddUserCommand(llvm::StringRef name,
1014  const lldb::CommandObjectSP &cmd_sp,
1015  bool can_replace) {
1016  if (cmd_sp.get())
1017  lldbassert((this == &cmd_sp->GetCommandInterpreter()) &&
1018  "tried to add a CommandObject from a different interpreter");
1019 
1020  if (!name.empty()) {
1021  // do not allow replacement of internal commands
1022  if (CommandExists(name)) {
1023  if (!can_replace)
1024  return false;
1025  if (!m_command_dict[std::string(name)]->IsRemovable())
1026  return false;
1027  }
1028 
1029  if (UserCommandExists(name)) {
1030  if (!can_replace)
1031  return false;
1032  if (!m_user_dict[std::string(name)]->IsRemovable())
1033  return false;
1034  }
1035 
1036  m_user_dict[std::string(name)] = cmd_sp;
1037  return true;
1038  }
1039  return false;
1040 }
1041 
1042 CommandObjectSP
1043 CommandInterpreter::GetCommandSPExact(llvm::StringRef cmd_str,
1044  bool include_aliases) const {
1045  // Break up the command string into words, in case it's a multi-word command.
1046  Args cmd_words(cmd_str);
1047 
1048  if (cmd_str.empty())
1049  return {};
1050 
1051  if (cmd_words.GetArgumentCount() == 1)
1052  return GetCommandSP(cmd_str, include_aliases, true);
1053 
1054  // We have a multi-word command (seemingly), so we need to do more work.
1055  // First, get the cmd_obj_sp for the first word in the command.
1056  CommandObjectSP cmd_obj_sp =
1057  GetCommandSP(cmd_words.GetArgumentAtIndex(0), include_aliases, true);
1058  if (!cmd_obj_sp)
1059  return {};
1060 
1061  // Loop through the rest of the words in the command (everything passed in
1062  // was supposed to be part of a command name), and find the appropriate
1063  // sub-command SP for each command word....
1064  size_t end = cmd_words.GetArgumentCount();
1065  for (size_t i = 1; i < end; ++i) {
1066  if (!cmd_obj_sp->IsMultiwordObject()) {
1067  // We have more words in the command name, but we don't have a
1068  // multiword object. Fail and return.
1069  return {};
1070  }
1071 
1072  cmd_obj_sp = cmd_obj_sp->GetSubcommandSP(cmd_words.GetArgumentAtIndex(i));
1073  if (!cmd_obj_sp) {
1074  // The sub-command name was invalid. Fail and return.
1075  return {};
1076  }
1077  }
1078 
1079  // We successfully looped through all the command words and got valid
1080  // command objects for them.
1081  return cmd_obj_sp;
1082 }
1083 
1084 CommandObject *
1085 CommandInterpreter::GetCommandObject(llvm::StringRef cmd_str,
1086  StringList *matches,
1087  StringList *descriptions) const {
1088  CommandObject *command_obj =
1089  GetCommandSP(cmd_str, false, true, matches, descriptions).get();
1090 
1091  // If we didn't find an exact match to the command string in the commands,
1092  // look in the aliases.
1093 
1094  if (command_obj)
1095  return command_obj;
1096 
1097  command_obj = GetCommandSP(cmd_str, true, true, matches, descriptions).get();
1098 
1099  if (command_obj)
1100  return command_obj;
1101 
1102  // If there wasn't an exact match then look for an inexact one in just the
1103  // commands
1104  command_obj = GetCommandSP(cmd_str, false, false, nullptr).get();
1105 
1106  // Finally, if there wasn't an inexact match among the commands, look for an
1107  // inexact match in both the commands and aliases.
1108 
1109  if (command_obj) {
1110  if (matches)
1111  matches->AppendString(command_obj->GetCommandName());
1112  if (descriptions)
1113  descriptions->AppendString(command_obj->GetHelp());
1114  return command_obj;
1115  }
1116 
1117  return GetCommandSP(cmd_str, true, false, matches, descriptions).get();
1118 }
1119 
1120 bool CommandInterpreter::CommandExists(llvm::StringRef cmd) const {
1121  return m_command_dict.find(std::string(cmd)) != m_command_dict.end();
1122 }
1123 
1124 bool CommandInterpreter::GetAliasFullName(llvm::StringRef cmd,
1125  std::string &full_name) const {
1126  bool exact_match =
1127  (m_alias_dict.find(std::string(cmd)) != m_alias_dict.end());
1128  if (exact_match) {
1129  full_name.assign(std::string(cmd));
1130  return exact_match;
1131  } else {
1132  StringList matches;
1133  size_t num_alias_matches;
1134  num_alias_matches =
1136  if (num_alias_matches == 1) {
1137  // Make sure this isn't shadowing a command in the regular command space:
1138  StringList regular_matches;
1139  const bool include_aliases = false;
1140  const bool exact = false;
1141  CommandObjectSP cmd_obj_sp(
1142  GetCommandSP(cmd, include_aliases, exact, &regular_matches));
1143  if (cmd_obj_sp || regular_matches.GetSize() > 0)
1144  return false;
1145  else {
1146  full_name.assign(matches.GetStringAtIndex(0));
1147  return true;
1148  }
1149  } else
1150  return false;
1151  }
1152 }
1153 
1154 bool CommandInterpreter::AliasExists(llvm::StringRef cmd) const {
1155  return m_alias_dict.find(std::string(cmd)) != m_alias_dict.end();
1156 }
1157 
1158 bool CommandInterpreter::UserCommandExists(llvm::StringRef cmd) const {
1159  return m_user_dict.find(std::string(cmd)) != m_user_dict.end();
1160 }
1161 
1162 CommandAlias *
1163 CommandInterpreter::AddAlias(llvm::StringRef alias_name,
1164  lldb::CommandObjectSP &command_obj_sp,
1165  llvm::StringRef args_string) {
1166  if (command_obj_sp.get())
1167  lldbassert((this == &command_obj_sp->GetCommandInterpreter()) &&
1168  "tried to add a CommandObject from a different interpreter");
1169 
1170  std::unique_ptr<CommandAlias> command_alias_up(
1171  new CommandAlias(*this, command_obj_sp, args_string, alias_name));
1172 
1173  if (command_alias_up && command_alias_up->IsValid()) {
1174  m_alias_dict[std::string(alias_name)] =
1175  CommandObjectSP(command_alias_up.get());
1176  return command_alias_up.release();
1177  }
1178 
1179  return nullptr;
1180 }
1181 
1182 bool CommandInterpreter::RemoveAlias(llvm::StringRef alias_name) {
1183  auto pos = m_alias_dict.find(std::string(alias_name));
1184  if (pos != m_alias_dict.end()) {
1185  m_alias_dict.erase(pos);
1186  return true;
1187  }
1188  return false;
1189 }
1190 
1191 bool CommandInterpreter::RemoveCommand(llvm::StringRef cmd) {
1192  auto pos = m_command_dict.find(std::string(cmd));
1193  if (pos != m_command_dict.end()) {
1194  if (pos->second->IsRemovable()) {
1195  // Only regular expression objects or python commands are removable
1196  m_command_dict.erase(pos);
1197  return true;
1198  }
1199  }
1200  return false;
1201 }
1202 bool CommandInterpreter::RemoveUser(llvm::StringRef alias_name) {
1203  CommandObject::CommandMap::iterator pos =
1204  m_user_dict.find(std::string(alias_name));
1205  if (pos != m_user_dict.end()) {
1206  m_user_dict.erase(pos);
1207  return true;
1208  }
1209  return false;
1210 }
1211 
1213  uint32_t cmd_types) {
1214  llvm::StringRef help_prologue(GetDebugger().GetIOHandlerHelpPrologue());
1215  if (!help_prologue.empty()) {
1216  OutputFormattedHelpText(result.GetOutputStream(), llvm::StringRef(),
1217  help_prologue);
1218  }
1219 
1220  CommandObject::CommandMap::const_iterator pos;
1221  size_t max_len = FindLongestCommandWord(m_command_dict);
1222 
1223  if ((cmd_types & eCommandTypesBuiltin) == eCommandTypesBuiltin) {
1224  result.AppendMessage("Debugger commands:");
1225  result.AppendMessage("");
1226 
1227  for (pos = m_command_dict.begin(); pos != m_command_dict.end(); ++pos) {
1228  if (!(cmd_types & eCommandTypesHidden) &&
1229  (pos->first.compare(0, 1, "_") == 0))
1230  continue;
1231 
1232  OutputFormattedHelpText(result.GetOutputStream(), pos->first, "--",
1233  pos->second->GetHelp(), max_len);
1234  }
1235  result.AppendMessage("");
1236  }
1237 
1238  if (!m_alias_dict.empty() &&
1239  ((cmd_types & eCommandTypesAliases) == eCommandTypesAliases)) {
1240  result.AppendMessageWithFormat(
1241  "Current command abbreviations "
1242  "(type '%shelp command alias' for more info):\n",
1243  GetCommandPrefix());
1244  result.AppendMessage("");
1246 
1247  for (auto alias_pos = m_alias_dict.begin(); alias_pos != m_alias_dict.end();
1248  ++alias_pos) {
1249  OutputFormattedHelpText(result.GetOutputStream(), alias_pos->first, "--",
1250  alias_pos->second->GetHelp(), max_len);
1251  }
1252  result.AppendMessage("");
1253  }
1254 
1255  if (!m_user_dict.empty() &&
1256  ((cmd_types & eCommandTypesUserDef) == eCommandTypesUserDef)) {
1257  result.AppendMessage("Current user-defined commands:");
1258  result.AppendMessage("");
1260  for (pos = m_user_dict.begin(); pos != m_user_dict.end(); ++pos) {
1261  OutputFormattedHelpText(result.GetOutputStream(), pos->first, "--",
1262  pos->second->GetHelp(), max_len);
1263  }
1264  result.AppendMessage("");
1265  }
1266 
1267  result.AppendMessageWithFormat(
1268  "For more information on any command, type '%shelp <command-name>'.\n",
1269  GetCommandPrefix());
1270 }
1271 
1273  llvm::StringRef &command_string) {
1274  // This function finds the final, lowest-level, alias-resolved command object
1275  // whose 'Execute' function will eventually be invoked by the given command
1276  // line.
1277 
1278  CommandObject *cmd_obj = nullptr;
1279  size_t start = command_string.find_first_not_of(k_white_space);
1280  size_t end = 0;
1281  bool done = false;
1282  while (!done) {
1283  if (start != std::string::npos) {
1284  // Get the next word from command_string.
1285  end = command_string.find_first_of(k_white_space, start);
1286  if (end == std::string::npos)
1287  end = command_string.size();
1288  std::string cmd_word =
1289  std::string(command_string.substr(start, end - start));
1290 
1291  if (cmd_obj == nullptr)
1292  // Since cmd_obj is NULL we are on our first time through this loop.
1293  // Check to see if cmd_word is a valid command or alias.
1294  cmd_obj = GetCommandObject(cmd_word);
1295  else if (cmd_obj->IsMultiwordObject()) {
1296  // Our current object is a multi-word object; see if the cmd_word is a
1297  // valid sub-command for our object.
1298  CommandObject *sub_cmd_obj =
1299  cmd_obj->GetSubcommandObject(cmd_word.c_str());
1300  if (sub_cmd_obj)
1301  cmd_obj = sub_cmd_obj;
1302  else // cmd_word was not a valid sub-command word, so we are done
1303  done = true;
1304  } else
1305  // We have a cmd_obj and it is not a multi-word object, so we are done.
1306  done = true;
1307 
1308  // If we didn't find a valid command object, or our command object is not
1309  // a multi-word object, or we are at the end of the command_string, then
1310  // we are done. Otherwise, find the start of the next word.
1311 
1312  if (!cmd_obj || !cmd_obj->IsMultiwordObject() ||
1313  end >= command_string.size())
1314  done = true;
1315  else
1316  start = command_string.find_first_not_of(k_white_space, end);
1317  } else
1318  // Unable to find any more words.
1319  done = true;
1320  }
1321 
1322  command_string = command_string.substr(end);
1323  return cmd_obj;
1324 }
1325 
1326 static const char *k_valid_command_chars =
1327  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_";
1328 static void StripLeadingSpaces(std::string &s) {
1329  if (!s.empty()) {
1330  size_t pos = s.find_first_not_of(k_white_space);
1331  if (pos == std::string::npos)
1332  s.clear();
1333  else if (pos == 0)
1334  return;
1335  s.erase(0, pos);
1336  }
1337 }
1338 
1339 static size_t FindArgumentTerminator(const std::string &s) {
1340  const size_t s_len = s.size();
1341  size_t offset = 0;
1342  while (offset < s_len) {
1343  size_t pos = s.find("--", offset);
1344  if (pos == std::string::npos)
1345  break;
1346  if (pos > 0) {
1347  if (llvm::isSpace(s[pos - 1])) {
1348  // Check if the string ends "\s--" (where \s is a space character) or
1349  // if we have "\s--\s".
1350  if ((pos + 2 >= s_len) || llvm::isSpace(s[pos + 2])) {
1351  return pos;
1352  }
1353  }
1354  }
1355  offset = pos + 2;
1356  }
1357  return std::string::npos;
1358 }
1359 
1360 static bool ExtractCommand(std::string &command_string, std::string &command,
1361  std::string &suffix, char &quote_char) {
1362  command.clear();
1363  suffix.clear();
1364  StripLeadingSpaces(command_string);
1365 
1366  bool result = false;
1367  quote_char = '\0';
1368 
1369  if (!command_string.empty()) {
1370  const char first_char = command_string[0];
1371  if (first_char == '\'' || first_char == '"') {
1372  quote_char = first_char;
1373  const size_t end_quote_pos = command_string.find(quote_char, 1);
1374  if (end_quote_pos == std::string::npos) {
1375  command.swap(command_string);
1376  command_string.erase();
1377  } else {
1378  command.assign(command_string, 1, end_quote_pos - 1);
1379  if (end_quote_pos + 1 < command_string.size())
1380  command_string.erase(0, command_string.find_first_not_of(
1381  k_white_space, end_quote_pos + 1));
1382  else
1383  command_string.erase();
1384  }
1385  } else {
1386  const size_t first_space_pos =
1387  command_string.find_first_of(k_white_space);
1388  if (first_space_pos == std::string::npos) {
1389  command.swap(command_string);
1390  command_string.erase();
1391  } else {
1392  command.assign(command_string, 0, first_space_pos);
1393  command_string.erase(0, command_string.find_first_not_of(
1394  k_white_space, first_space_pos));
1395  }
1396  }
1397  result = true;
1398  }
1399 
1400  if (!command.empty()) {
1401  // actual commands can't start with '-' or '_'
1402  if (command[0] != '-' && command[0] != '_') {
1403  size_t pos = command.find_first_not_of(k_valid_command_chars);
1404  if (pos > 0 && pos != std::string::npos) {
1405  suffix.assign(command.begin() + pos, command.end());
1406  command.erase(pos);
1407  }
1408  }
1409  }
1410 
1411  return result;
1412 }
1413 
1415  llvm::StringRef alias_name, std::string &raw_input_string,
1416  std::string &alias_result, CommandReturnObject &result) {
1417  CommandObject *alias_cmd_obj = nullptr;
1418  Args cmd_args(raw_input_string);
1419  alias_cmd_obj = GetCommandObject(alias_name);
1420  StreamString result_str;
1421 
1422  if (!alias_cmd_obj || !alias_cmd_obj->IsAlias()) {
1423  alias_result.clear();
1424  return alias_cmd_obj;
1425  }
1426  std::pair<CommandObjectSP, OptionArgVectorSP> desugared =
1427  ((CommandAlias *)alias_cmd_obj)->Desugar();
1428  OptionArgVectorSP option_arg_vector_sp = desugared.second;
1429  alias_cmd_obj = desugared.first.get();
1430  std::string alias_name_str = std::string(alias_name);
1431  if ((cmd_args.GetArgumentCount() == 0) ||
1432  (alias_name_str != cmd_args.GetArgumentAtIndex(0)))
1433  cmd_args.Unshift(alias_name_str);
1434 
1435  result_str.Printf("%s", alias_cmd_obj->GetCommandName().str().c_str());
1436 
1437  if (!option_arg_vector_sp.get()) {
1438  alias_result = std::string(result_str.GetString());
1439  return alias_cmd_obj;
1440  }
1441  OptionArgVector *option_arg_vector = option_arg_vector_sp.get();
1442 
1443  int value_type;
1444  std::string option;
1445  std::string value;
1446  for (const auto &entry : *option_arg_vector) {
1447  std::tie(option, value_type, value) = entry;
1448  if (option == "<argument>") {
1449  result_str.Printf(" %s", value.c_str());
1450  continue;
1451  }
1452 
1453  result_str.Printf(" %s", option.c_str());
1454  if (value_type == OptionParser::eNoArgument)
1455  continue;
1456 
1457  if (value_type != OptionParser::eOptionalArgument)
1458  result_str.Printf(" ");
1459  int index = GetOptionArgumentPosition(value.c_str());
1460  if (index == 0)
1461  result_str.Printf("%s", value.c_str());
1462  else if (static_cast<size_t>(index) >= cmd_args.GetArgumentCount()) {
1463 
1464  result.AppendErrorWithFormat("Not enough arguments provided; you "
1465  "need at least %d arguments to use "
1466  "this alias.\n",
1467  index);
1469  return nullptr;
1470  } else {
1471  size_t strpos = raw_input_string.find(cmd_args.GetArgumentAtIndex(index));
1472  if (strpos != std::string::npos)
1473  raw_input_string = raw_input_string.erase(
1474  strpos, strlen(cmd_args.GetArgumentAtIndex(index)));
1475  result_str.Printf("%s", cmd_args.GetArgumentAtIndex(index));
1476  }
1477  }
1478 
1479  alias_result = std::string(result_str.GetString());
1480  return alias_cmd_obj;
1481 }
1482 
1484  // The command preprocessor needs to do things to the command line before any
1485  // parsing of arguments or anything else is done. The only current stuff that
1486  // gets preprocessed is anything enclosed in backtick ('`') characters is
1487  // evaluated as an expression and the result of the expression must be a
1488  // scalar that can be substituted into the command. An example would be:
1489  // (lldb) memory read `$rsp + 20`
1490  Status error; // Status for any expressions that might not evaluate
1491  size_t start_backtick;
1492  size_t pos = 0;
1493  while ((start_backtick = command.find('`', pos)) != std::string::npos) {
1494  // Stop if an error was encountered during the previous iteration.
1495  if (error.Fail())
1496  break;
1497 
1498  if (start_backtick > 0 && command[start_backtick - 1] == '\\') {
1499  // The backtick was preceded by a '\' character, remove the slash and
1500  // don't treat the backtick as the start of an expression.
1501  command.erase(start_backtick - 1, 1);
1502  // No need to add one to start_backtick since we just deleted a char.
1503  pos = start_backtick;
1504  continue;
1505  }
1506 
1507  const size_t expr_content_start = start_backtick + 1;
1508  const size_t end_backtick = command.find('`', expr_content_start);
1509 
1510  if (end_backtick == std::string::npos) {
1511  // Stop if there's no end backtick.
1512  break;
1513  }
1514 
1515  if (end_backtick == expr_content_start) {
1516  // Skip over empty expression. (two backticks in a row)
1517  command.erase(start_backtick, 2);
1518  continue;
1519  }
1520 
1521  std::string expr_str(command, expr_content_start,
1522  end_backtick - expr_content_start);
1523 
1525 
1526  // Get a dummy target to allow for calculator mode while processing
1527  // backticks. This also helps break the infinite loop caused when target is
1528  // null.
1529  Target *exe_target = exe_ctx.GetTargetPtr();
1530  Target &target = exe_target ? *exe_target : m_debugger.GetDummyTarget();
1531 
1532  ValueObjectSP expr_result_valobj_sp;
1533 
1534  EvaluateExpressionOptions options;
1535  options.SetCoerceToId(false);
1536  options.SetUnwindOnError(true);
1537  options.SetIgnoreBreakpoints(true);
1538  options.SetKeepInMemory(false);
1539  options.SetTryAllThreads(true);
1540  options.SetTimeout(llvm::None);
1541 
1542  ExpressionResults expr_result =
1543  target.EvaluateExpression(expr_str.c_str(), exe_ctx.GetFramePtr(),
1544  expr_result_valobj_sp, options);
1545 
1546  if (expr_result == eExpressionCompleted) {
1547  Scalar scalar;
1548  if (expr_result_valobj_sp)
1549  expr_result_valobj_sp =
1550  expr_result_valobj_sp->GetQualifiedRepresentationIfAvailable(
1551  expr_result_valobj_sp->GetDynamicValueType(), true);
1552  if (expr_result_valobj_sp->ResolveValue(scalar)) {
1553  command.erase(start_backtick, end_backtick - start_backtick + 1);
1554  StreamString value_strm;
1555  const bool show_type = false;
1556  scalar.GetValue(&value_strm, show_type);
1557  size_t value_string_size = value_strm.GetSize();
1558  if (value_string_size) {
1559  command.insert(start_backtick, std::string(value_strm.GetString()));
1560  pos = start_backtick + value_string_size;
1561  continue;
1562  } else {
1563  error.SetErrorStringWithFormat("expression value didn't result "
1564  "in a scalar value for the "
1565  "expression '%s'",
1566  expr_str.c_str());
1567  break;
1568  }
1569  } else {
1570  error.SetErrorStringWithFormat("expression value didn't result "
1571  "in a scalar value for the "
1572  "expression '%s'",
1573  expr_str.c_str());
1574  break;
1575  }
1576 
1577  continue;
1578  }
1579 
1580  if (expr_result_valobj_sp)
1581  error = expr_result_valobj_sp->GetError();
1582 
1583  if (error.Success()) {
1584  switch (expr_result) {
1585  case eExpressionSetupError:
1586  error.SetErrorStringWithFormat(
1587  "expression setup error for the expression '%s'", expr_str.c_str());
1588  break;
1589  case eExpressionParseError:
1590  error.SetErrorStringWithFormat(
1591  "expression parse error for the expression '%s'", expr_str.c_str());
1592  break;
1594  error.SetErrorStringWithFormat(
1595  "expression error fetching result for the expression '%s'",
1596  expr_str.c_str());
1597  break;
1598  case eExpressionCompleted:
1599  break;
1600  case eExpressionDiscarded:
1601  error.SetErrorStringWithFormat(
1602  "expression discarded for the expression '%s'", expr_str.c_str());
1603  break;
1605  error.SetErrorStringWithFormat(
1606  "expression interrupted for the expression '%s'", expr_str.c_str());
1607  break;
1609  error.SetErrorStringWithFormat(
1610  "expression hit breakpoint for the expression '%s'",
1611  expr_str.c_str());
1612  break;
1613  case eExpressionTimedOut:
1614  error.SetErrorStringWithFormat(
1615  "expression timed out for the expression '%s'", expr_str.c_str());
1616  break;
1618  error.SetErrorStringWithFormat("expression stop at entry point "
1619  "for debugging for the "
1620  "expression '%s'",
1621  expr_str.c_str());
1622  break;
1624  error.SetErrorStringWithFormat(
1625  "expression thread vanished for the expression '%s'",
1626  expr_str.c_str());
1627  break;
1628  }
1629  }
1630  }
1631  return error;
1632 }
1633 
1634 bool CommandInterpreter::HandleCommand(const char *command_line,
1635  LazyBool lazy_add_to_history,
1636  const ExecutionContext &override_context,
1637  CommandReturnObject &result) {
1638 
1639  OverrideExecutionContext(override_context);
1640  bool status = HandleCommand(command_line, lazy_add_to_history, result);
1642  return status;
1643 }
1644 
1645 bool CommandInterpreter::HandleCommand(const char *command_line,
1646  LazyBool lazy_add_to_history,
1647  CommandReturnObject &result) {
1648 
1649  std::string command_string(command_line);
1650  std::string original_command_string(command_line);
1651 
1653  llvm::PrettyStackTraceFormat stack_trace("HandleCommand(command = \"%s\")",
1654  command_line);
1655 
1656  LLDB_LOGF(log, "Processing command: %s", command_line);
1657  LLDB_SCOPED_TIMERF("Processing command: %s.", command_line);
1658 
1659  if (WasInterrupted()) {
1660  result.AppendError("interrupted");
1662  return false;
1663  }
1664 
1665  bool add_to_history;
1666  if (lazy_add_to_history == eLazyBoolCalculate)
1667  add_to_history = (m_command_source_depth == 0);
1668  else
1669  add_to_history = (lazy_add_to_history == eLazyBoolYes);
1670 
1671  m_transcript_stream << "(lldb) " << command_line << '\n';
1672 
1673  bool empty_command = false;
1674  bool comment_command = false;
1675  if (command_string.empty())
1676  empty_command = true;
1677  else {
1678  const char *k_space_characters = "\t\n\v\f\r ";
1679 
1680  size_t non_space = command_string.find_first_not_of(k_space_characters);
1681  // Check for empty line or comment line (lines whose first non-space
1682  // character is the comment character for this interpreter)
1683  if (non_space == std::string::npos)
1684  empty_command = true;
1685  else if (command_string[non_space] == m_comment_char)
1686  comment_command = true;
1687  else if (command_string[non_space] == CommandHistory::g_repeat_char) {
1688  llvm::StringRef search_str(command_string);
1689  search_str = search_str.drop_front(non_space);
1690  if (auto hist_str = m_command_history.FindString(search_str)) {
1691  add_to_history = false;
1692  command_string = std::string(*hist_str);
1693  original_command_string = std::string(*hist_str);
1694  } else {
1695  result.AppendErrorWithFormat("Could not find entry: %s in history",
1696  command_string.c_str());
1698  return false;
1699  }
1700  }
1701  }
1702 
1703  if (empty_command) {
1704  if (!GetRepeatPreviousCommand()) {
1706  return true;
1707  }
1708 
1709  if (m_command_history.IsEmpty()) {
1710  result.AppendError("empty command");
1712  return false;
1713  }
1714 
1715  command_line = m_repeat_command.c_str();
1716  command_string = command_line;
1717  original_command_string = command_line;
1718  if (m_repeat_command.empty()) {
1719  result.AppendError("No auto repeat.");
1721  return false;
1722  }
1723 
1724  add_to_history = false;
1725  } else if (comment_command) {
1727  return true;
1728  }
1729 
1730  Status error(PreprocessCommand(command_string));
1731 
1732  if (error.Fail()) {
1733  result.AppendError(error.AsCString());
1735  return false;
1736  }
1737 
1738  // Phase 1.
1739 
1740  // Before we do ANY kind of argument processing, we need to figure out what
1741  // the real/final command object is for the specified command. This gets
1742  // complicated by the fact that the user could have specified an alias, and,
1743  // in translating the alias, there may also be command options and/or even
1744  // data (including raw text strings) that need to be found and inserted into
1745  // the command line as part of the translation. So this first step is plain
1746  // look-up and replacement, resulting in:
1747  // 1. the command object whose Execute method will actually be called
1748  // 2. a revised command string, with all substitutions and replacements
1749  // taken care of
1750  // From 1 above, we can determine whether the Execute function wants raw
1751  // input or not.
1752 
1753  CommandObject *cmd_obj = ResolveCommandImpl(command_string, result);
1754 
1755  // Although the user may have abbreviated the command, the command_string now
1756  // has the command expanded to the full name. For example, if the input was
1757  // "br s -n main", command_string is now "breakpoint set -n main".
1758  if (log) {
1759  llvm::StringRef command_name = cmd_obj ? cmd_obj->GetCommandName() : "<not found>";
1760  LLDB_LOGF(log, "HandleCommand, cmd_obj : '%s'", command_name.str().c_str());
1761  LLDB_LOGF(log, "HandleCommand, (revised) command_string: '%s'",
1762  command_string.c_str());
1763  const bool wants_raw_input =
1764  (cmd_obj != nullptr) ? cmd_obj->WantsRawCommandString() : false;
1765  LLDB_LOGF(log, "HandleCommand, wants_raw_input:'%s'",
1766  wants_raw_input ? "True" : "False");
1767  }
1768 
1769  // Phase 2.
1770  // Take care of things like setting up the history command & calling the
1771  // appropriate Execute method on the CommandObject, with the appropriate
1772  // arguments.
1773 
1774  if (cmd_obj != nullptr) {
1775  if (add_to_history) {
1776  Args command_args(command_string);
1777  const char *repeat_command = cmd_obj->GetRepeatCommand(command_args, 0);
1778  if (repeat_command != nullptr)
1779  m_repeat_command.assign(repeat_command);
1780  else
1781  m_repeat_command.assign(original_command_string);
1782 
1783  m_command_history.AppendString(original_command_string);
1784  }
1785 
1786  std::string remainder;
1787  const std::size_t actual_cmd_name_len = cmd_obj->GetCommandName().size();
1788  if (actual_cmd_name_len < command_string.length())
1789  remainder = command_string.substr(actual_cmd_name_len);
1790 
1791  // Remove any initial spaces
1792  size_t pos = remainder.find_first_not_of(k_white_space);
1793  if (pos != 0 && pos != std::string::npos)
1794  remainder.erase(0, pos);
1795 
1796  LLDB_LOGF(
1797  log, "HandleCommand, command line after removing command name(s): '%s'",
1798  remainder.c_str());
1799 
1800  cmd_obj->Execute(remainder.c_str(), result);
1801  }
1802 
1803  LLDB_LOGF(log, "HandleCommand, command %s",
1804  (result.Succeeded() ? "succeeded" : "did not succeed"));
1805 
1806  m_transcript_stream << result.GetOutputData();
1807  m_transcript_stream << result.GetErrorData();
1808 
1809  return result.Succeeded();
1810 }
1811 
1813  bool look_for_subcommand = false;
1814 
1815  // For any of the command completions a unique match will be a complete word.
1816 
1817  if (request.GetParsedLine().GetArgumentCount() == 0) {
1818  // We got nothing on the command line, so return the list of commands
1819  bool include_aliases = true;
1820  StringList new_matches, descriptions;
1821  GetCommandNamesMatchingPartialString("", include_aliases, new_matches,
1822  descriptions);
1823  request.AddCompletions(new_matches, descriptions);
1824  } else if (request.GetCursorIndex() == 0) {
1825  // The cursor is in the first argument, so just do a lookup in the
1826  // dictionary.
1827  StringList new_matches, new_descriptions;
1828  CommandObject *cmd_obj =
1830  &new_matches, &new_descriptions);
1831 
1832  if (new_matches.GetSize() && cmd_obj && cmd_obj->IsMultiwordObject() &&
1833  new_matches.GetStringAtIndex(0) != nullptr &&
1834  strcmp(request.GetParsedLine().GetArgumentAtIndex(0),
1835  new_matches.GetStringAtIndex(0)) == 0) {
1836  if (request.GetParsedLine().GetArgumentCount() != 1) {
1837  look_for_subcommand = true;
1838  new_matches.DeleteStringAtIndex(0);
1839  new_descriptions.DeleteStringAtIndex(0);
1840  request.AppendEmptyArgument();
1841  }
1842  }
1843  request.AddCompletions(new_matches, new_descriptions);
1844  }
1845 
1846  if (request.GetCursorIndex() > 0 || look_for_subcommand) {
1847  // We are completing further on into a commands arguments, so find the
1848  // command and tell it to complete the command. First see if there is a
1849  // matching initial command:
1850  CommandObject *command_object =
1852  if (command_object) {
1853  request.ShiftArguments();
1854  command_object->HandleCompletion(request);
1855  }
1856  }
1857 }
1858 
1860 
1861  // Don't complete comments, and if the line we are completing is just the
1862  // history repeat character, substitute the appropriate history line.
1863  llvm::StringRef first_arg = request.GetParsedLine().GetArgumentAtIndex(0);
1864 
1865  if (!first_arg.empty()) {
1866  if (first_arg.front() == m_comment_char)
1867  return;
1868  if (first_arg.front() == CommandHistory::g_repeat_char) {
1869  if (auto hist_str = m_command_history.FindString(first_arg))
1870  request.AddCompletion(*hist_str, "Previous command history event",
1872  return;
1873  }
1874  }
1875 
1876  HandleCompletionMatches(request);
1877 }
1878 
1879 llvm::Optional<std::string>
1881  if (line.empty())
1882  return llvm::None;
1883  const size_t s = m_command_history.GetSize();
1884  for (int i = s - 1; i >= 0; --i) {
1885  llvm::StringRef entry = m_command_history.GetStringAtIndex(i);
1886  if (entry.consume_front(line))
1887  return entry.str();
1888  }
1889  return llvm::None;
1890 }
1891 
1892 void CommandInterpreter::UpdatePrompt(llvm::StringRef new_prompt) {
1893  EventSP prompt_change_event_sp(
1894  new Event(eBroadcastBitResetPrompt, new EventDataBytes(new_prompt)));
1895  ;
1896  BroadcastEvent(prompt_change_event_sp);
1898  m_command_io_handler_sp->SetPrompt(new_prompt);
1899 }
1900 
1901 bool CommandInterpreter::Confirm(llvm::StringRef message, bool default_answer) {
1902  // Check AutoConfirm first:
1903  if (m_debugger.GetAutoConfirm())
1904  return default_answer;
1905 
1906  IOHandlerConfirm *confirm =
1907  new IOHandlerConfirm(m_debugger, message, default_answer);
1908  IOHandlerSP io_handler_sp(confirm);
1909  m_debugger.RunIOHandlerSync(io_handler_sp);
1910  return confirm->GetResponse();
1911 }
1912 
1913 const CommandAlias *
1914 CommandInterpreter::GetAlias(llvm::StringRef alias_name) const {
1915  OptionArgVectorSP ret_val;
1916 
1917  auto pos = m_alias_dict.find(std::string(alias_name));
1918  if (pos != m_alias_dict.end())
1919  return (CommandAlias *)pos->second.get();
1920 
1921  return nullptr;
1922 }
1923 
1924 bool CommandInterpreter::HasCommands() const { return (!m_command_dict.empty()); }
1925 
1926 bool CommandInterpreter::HasAliases() const { return (!m_alias_dict.empty()); }
1927 
1928 bool CommandInterpreter::HasUserCommands() const { return (!m_user_dict.empty()); }
1929 
1930 bool CommandInterpreter::HasAliasOptions() const { return HasAliases(); }
1931 
1933  const char *alias_name,
1934  Args &cmd_args,
1935  std::string &raw_input_string,
1936  CommandReturnObject &result) {
1937  OptionArgVectorSP option_arg_vector_sp =
1938  GetAlias(alias_name)->GetOptionArguments();
1939 
1940  bool wants_raw_input = alias_cmd_obj->WantsRawCommandString();
1941 
1942  // Make sure that the alias name is the 0th element in cmd_args
1943  std::string alias_name_str = alias_name;
1944  if (alias_name_str != cmd_args.GetArgumentAtIndex(0))
1945  cmd_args.Unshift(alias_name_str);
1946 
1947  Args new_args(alias_cmd_obj->GetCommandName());
1948  if (new_args.GetArgumentCount() == 2)
1949  new_args.Shift();
1950 
1951  if (option_arg_vector_sp.get()) {
1952  if (wants_raw_input) {
1953  // We have a command that both has command options and takes raw input.
1954  // Make *sure* it has a " -- " in the right place in the
1955  // raw_input_string.
1956  size_t pos = raw_input_string.find(" -- ");
1957  if (pos == std::string::npos) {
1958  // None found; assume it goes at the beginning of the raw input string
1959  raw_input_string.insert(0, " -- ");
1960  }
1961  }
1962 
1963  OptionArgVector *option_arg_vector = option_arg_vector_sp.get();
1964  const size_t old_size = cmd_args.GetArgumentCount();
1965  std::vector<bool> used(old_size + 1, false);
1966 
1967  used[0] = true;
1968 
1969  int value_type;
1970  std::string option;
1971  std::string value;
1972  for (const auto &option_entry : *option_arg_vector) {
1973  std::tie(option, value_type, value) = option_entry;
1974  if (option == "<argument>") {
1975  if (!wants_raw_input || (value != "--")) {
1976  // Since we inserted this above, make sure we don't insert it twice
1977  new_args.AppendArgument(value);
1978  }
1979  continue;
1980  }
1981 
1982  if (value_type != OptionParser::eOptionalArgument)
1983  new_args.AppendArgument(option);
1984 
1985  if (value == "<no-argument>")
1986  continue;
1987 
1988  int index = GetOptionArgumentPosition(value.c_str());
1989  if (index == 0) {
1990  // value was NOT a positional argument; must be a real value
1991  if (value_type != OptionParser::eOptionalArgument)
1992  new_args.AppendArgument(value);
1993  else {
1994  new_args.AppendArgument(option + value);
1995  }
1996 
1997  } else if (static_cast<size_t>(index) >= cmd_args.GetArgumentCount()) {
1998  result.AppendErrorWithFormat("Not enough arguments provided; you "
1999  "need at least %d arguments to use "
2000  "this alias.\n",
2001  index);
2003  return;
2004  } else {
2005  // Find and remove cmd_args.GetArgumentAtIndex(i) from raw_input_string
2006  size_t strpos =
2007  raw_input_string.find(cmd_args.GetArgumentAtIndex(index));
2008  if (strpos != std::string::npos) {
2009  raw_input_string = raw_input_string.erase(
2010  strpos, strlen(cmd_args.GetArgumentAtIndex(index)));
2011  }
2012 
2013  if (value_type != OptionParser::eOptionalArgument)
2014  new_args.AppendArgument(cmd_args.GetArgumentAtIndex(index));
2015  else {
2016  new_args.AppendArgument(option + cmd_args.GetArgumentAtIndex(index));
2017  }
2018  used[index] = true;
2019  }
2020  }
2021 
2022  for (auto entry : llvm::enumerate(cmd_args.entries())) {
2023  if (!used[entry.index()] && !wants_raw_input)
2024  new_args.AppendArgument(entry.value().ref());
2025  }
2026 
2027  cmd_args.Clear();
2028  cmd_args.SetArguments(new_args.GetArgumentCount(),
2029  new_args.GetConstArgumentVector());
2030  } else {
2032  // This alias was not created with any options; nothing further needs to be
2033  // done, unless it is a command that wants raw input, in which case we need
2034  // to clear the rest of the data from cmd_args, since its in the raw input
2035  // string.
2036  if (wants_raw_input) {
2037  cmd_args.Clear();
2038  cmd_args.SetArguments(new_args.GetArgumentCount(),
2039  new_args.GetConstArgumentVector());
2040  }
2041  return;
2042  }
2043 
2045  return;
2046 }
2047 
2048 int CommandInterpreter::GetOptionArgumentPosition(const char *in_string) {
2049  int position = 0; // Any string that isn't an argument position, i.e. '%'
2050  // followed by an integer, gets a position
2051  // of zero.
2052 
2053  const char *cptr = in_string;
2054 
2055  // Does it start with '%'
2056  if (cptr[0] == '%') {
2057  ++cptr;
2058 
2059  // Is the rest of it entirely digits?
2060  if (isdigit(cptr[0])) {
2061  const char *start = cptr;
2062  while (isdigit(cptr[0]))
2063  ++cptr;
2064 
2065  // We've gotten to the end of the digits; are we at the end of the
2066  // string?
2067  if (cptr[0] == '\0')
2068  position = atoi(start);
2069  }
2070  }
2071 
2072  return position;
2073 }
2074 
2075 static void GetHomeInitFile(llvm::SmallVectorImpl<char> &init_file,
2076  llvm::StringRef suffix = {}) {
2077  std::string init_file_name = ".lldbinit";
2078  if (!suffix.empty()) {
2079  init_file_name.append("-");
2080  init_file_name.append(suffix.str());
2081  }
2082 
2084  llvm::sys::path::append(init_file, init_file_name);
2085 
2086  FileSystem::Instance().Resolve(init_file);
2087 }
2088 
2089 static void GetHomeREPLInitFile(llvm::SmallVectorImpl<char> &init_file) {
2092  if (auto main_repl_language = repl_languages.GetSingularLanguage())
2093  language = *main_repl_language;
2094  else
2095  return;
2096 
2097  std::string init_file_name =
2098  (llvm::Twine(".lldbinit-") +
2099  llvm::Twine(Language::GetNameForLanguageType(language)) +
2100  llvm::Twine("-repl"))
2101  .str();
2103  llvm::sys::path::append(init_file, init_file_name);
2104  FileSystem::Instance().Resolve(init_file);
2105 }
2106 
2107 static void GetCwdInitFile(llvm::SmallVectorImpl<char> &init_file) {
2108  llvm::StringRef s = ".lldbinit";
2109  init_file.assign(s.begin(), s.end());
2110  FileSystem::Instance().Resolve(init_file);
2111 }
2112 
2113 static LoadCWDlldbinitFile ShouldLoadCwdInitFile() {
2114  lldb::TargetPropertiesSP properties = Target::GetGlobalProperties();
2115  if (!properties)
2116  return eLoadCWDlldbinitFalse;
2117  return properties->GetLoadCWDlldbinitFile();
2118 }
2119 
2121  CommandReturnObject &result) {
2122  assert(!m_skip_lldbinit_files);
2123 
2124  if (!FileSystem::Instance().Exists(file)) {
2126  return;
2127  }
2128 
2129  // Use HandleCommand to 'source' the given file; this will do the actual
2130  // broadcasting of the commands back to any appropriate listener (see
2131  // CommandObjectSource::Execute for more details).
2132  const bool saved_batch = SetBatchCommandMode(true);
2134  options.SetSilent(true);
2135  options.SetPrintErrors(true);
2136  options.SetStopOnError(false);
2137  options.SetStopOnContinue(true);
2138  HandleCommandsFromFile(file, options, result);
2139  SetBatchCommandMode(saved_batch);
2140 }
2141 
2143  if (m_skip_lldbinit_files) {
2145  return;
2146  }
2147 
2148  llvm::SmallString<128> init_file;
2149  GetCwdInitFile(init_file);
2150  if (!FileSystem::Instance().Exists(init_file)) {
2152  return;
2153  }
2154 
2155  LoadCWDlldbinitFile should_load = ShouldLoadCwdInitFile();
2156 
2157  switch (should_load) {
2158  case eLoadCWDlldbinitFalse:
2160  break;
2161  case eLoadCWDlldbinitTrue:
2162  SourceInitFile(FileSpec(init_file.str()), result);
2163  break;
2164  case eLoadCWDlldbinitWarn: {
2165  llvm::SmallString<128> home_init_file;
2166  GetHomeInitFile(home_init_file);
2167  if (llvm::sys::path::parent_path(init_file) ==
2168  llvm::sys::path::parent_path(home_init_file)) {
2170  } else {
2171  result.AppendError(InitFileWarning);
2173  }
2174  }
2175  }
2176 }
2177 
2178 /// We will first see if there is an application specific ".lldbinit" file
2179 /// whose name is "~/.lldbinit" followed by a "-" and the name of the program.
2180 /// If this file doesn't exist, we fall back to the REPL init file or the
2181 /// default home init file in "~/.lldbinit".
2183  bool is_repl) {
2184  if (m_skip_lldbinit_files) {
2186  return;
2187  }
2188 
2189  llvm::SmallString<128> init_file;
2190 
2191  if (is_repl)
2192  GetHomeREPLInitFile(init_file);
2193 
2194  if (init_file.empty())
2195  GetHomeInitFile(init_file);
2196 
2197  if (!m_skip_app_init_files) {
2198  llvm::StringRef program_name =
2199  HostInfo::GetProgramFileSpec().GetFilename().GetStringRef();
2200  llvm::SmallString<128> program_init_file;
2201  GetHomeInitFile(program_init_file, program_name);
2202  if (FileSystem::Instance().Exists(program_init_file))
2203  init_file = program_init_file;
2204  }
2205 
2206  SourceInitFile(FileSpec(init_file.str()), result);
2207 }
2208 
2210  const char *prefix = GetDebugger().GetIOHandlerCommandPrefix();
2211  return prefix == nullptr ? "" : prefix;
2212 }
2213 
2214 PlatformSP CommandInterpreter::GetPlatform(bool prefer_target_platform) {
2215  PlatformSP platform_sp;
2216  if (prefer_target_platform) {
2218  Target *target = exe_ctx.GetTargetPtr();
2219  if (target)
2220  platform_sp = target->GetPlatform();
2221  }
2222 
2223  if (!platform_sp)
2225  return platform_sp;
2226 }
2227 
2229  auto exe_ctx = GetExecutionContext();
2230  TargetSP target_sp = exe_ctx.GetTargetSP();
2231  if (!target_sp)
2232  return false;
2233 
2234  ProcessSP process_sp(target_sp->GetProcessSP());
2235  if (!process_sp)
2236  return false;
2237 
2238  if (eStateStopped != process_sp->GetState())
2239  return false;
2240 
2241  for (const auto &thread_sp : process_sp->GetThreadList().Threads()) {
2242  StopInfoSP stop_info = thread_sp->GetStopInfo();
2243  if (!stop_info)
2244  return false;
2245 
2246  const StopReason reason = stop_info->GetStopReason();
2247  if (reason == eStopReasonException ||
2248  reason == eStopReasonInstrumentation ||
2249  reason == eStopReasonProcessorTrace)
2250  return true;
2251 
2252  if (reason == eStopReasonSignal) {
2253  const auto stop_signal = static_cast<int32_t>(stop_info->GetValue());
2254  UnixSignalsSP signals_sp = process_sp->GetUnixSignals();
2255  if (!signals_sp || !signals_sp->SignalIsValid(stop_signal))
2256  // The signal is unknown, treat it as abnormal.
2257  return true;
2258 
2259  const auto sigint_num = signals_sp->GetSignalNumberFromName("SIGINT");
2260  const auto sigstop_num = signals_sp->GetSignalNumberFromName("SIGSTOP");
2261  if ((stop_signal != sigint_num) && (stop_signal != sigstop_num))
2262  // The signal very likely implies a crash.
2263  return true;
2264  }
2265  }
2266 
2267  return false;
2268 }
2269 
2270 void
2272  const ExecutionContext &override_context,
2273  const CommandInterpreterRunOptions &options,
2274  CommandReturnObject &result) {
2275 
2276  OverrideExecutionContext(override_context);
2277  HandleCommands(commands, options, result);
2279 }
2280 
2281 void CommandInterpreter::HandleCommands(const StringList &commands,
2282  const CommandInterpreterRunOptions &options,
2283  CommandReturnObject &result) {
2284  size_t num_lines = commands.GetSize();
2285 
2286  // If we are going to continue past a "continue" then we need to run the
2287  // commands synchronously. Make sure you reset this value anywhere you return
2288  // from the function.
2289 
2290  bool old_async_execution = m_debugger.GetAsyncExecution();
2291 
2292  if (!options.GetStopOnContinue()) {
2294  }
2295 
2296  for (size_t idx = 0; idx < num_lines && !WasInterrupted(); idx++) {
2297  const char *cmd = commands.GetStringAtIndex(idx);
2298  if (cmd[0] == '\0')
2299  continue;
2300 
2301  if (options.GetEchoCommands()) {
2302  // TODO: Add Stream support.
2303  result.AppendMessageWithFormat("%s %s\n",
2304  m_debugger.GetPrompt().str().c_str(), cmd);
2305  }
2306 
2308  tmp_result.SetInteractive(result.GetInteractive());
2309 
2310  // We might call into a regex or alias command, in which case the
2311  // add_to_history will get lost. This m_command_source_depth dingus is the
2312  // way we turn off adding to the history in that case, so set it up here.
2313  if (!options.GetAddToHistory())
2315  bool success = HandleCommand(cmd, options.m_add_to_history, tmp_result);
2316  if (!options.GetAddToHistory())
2318 
2319  if (options.GetPrintResults()) {
2320  if (tmp_result.Succeeded())
2321  result.AppendMessage(tmp_result.GetOutputData());
2322  }
2323 
2324  if (!success || !tmp_result.Succeeded()) {
2325  llvm::StringRef error_msg = tmp_result.GetErrorData();
2326  if (error_msg.empty())
2327  error_msg = "<unknown error>.\n";
2328  if (options.GetStopOnError()) {
2329  result.AppendErrorWithFormat(
2330  "Aborting reading of commands after command #%" PRIu64
2331  ": '%s' failed with %s",
2332  (uint64_t)idx, cmd, error_msg.str().c_str());
2334  m_debugger.SetAsyncExecution(old_async_execution);
2335  return;
2336  } else if (options.GetPrintResults()) {
2337  result.AppendMessageWithFormat(
2338  "Command #%" PRIu64 " '%s' failed with %s", (uint64_t)idx + 1, cmd,
2339  error_msg.str().c_str());
2340  }
2341  }
2342 
2343  if (result.GetImmediateOutputStream())
2344  result.GetImmediateOutputStream()->Flush();
2345 
2346  if (result.GetImmediateErrorStream())
2347  result.GetImmediateErrorStream()->Flush();
2348 
2349  // N.B. Can't depend on DidChangeProcessState, because the state coming
2350  // into the command execution could be running (for instance in Breakpoint
2351  // Commands. So we check the return value to see if it is has running in
2352  // it.
2353  if ((tmp_result.GetStatus() == eReturnStatusSuccessContinuingNoResult) ||
2354  (tmp_result.GetStatus() == eReturnStatusSuccessContinuingResult)) {
2355  if (options.GetStopOnContinue()) {
2356  // If we caused the target to proceed, and we're going to stop in that
2357  // case, set the status in our real result before returning. This is
2358  // an error if the continue was not the last command in the set of
2359  // commands to be run.
2360  if (idx != num_lines - 1)
2361  result.AppendErrorWithFormat(
2362  "Aborting reading of commands after command #%" PRIu64
2363  ": '%s' continued the target.\n",
2364  (uint64_t)idx + 1, cmd);
2365  else
2366  result.AppendMessageWithFormat("Command #%" PRIu64
2367  " '%s' continued the target.\n",
2368  (uint64_t)idx + 1, cmd);
2369 
2370  result.SetStatus(tmp_result.GetStatus());
2371  m_debugger.SetAsyncExecution(old_async_execution);
2372 
2373  return;
2374  }
2375  }
2376 
2377  // Also check for "stop on crash here:
2378  if (tmp_result.GetDidChangeProcessState() && options.GetStopOnCrash() &&
2380  if (idx != num_lines - 1)
2381  result.AppendErrorWithFormat(
2382  "Aborting reading of commands after command #%" PRIu64
2383  ": '%s' stopped with a signal or exception.\n",
2384  (uint64_t)idx + 1, cmd);
2385  else
2386  result.AppendMessageWithFormat(
2387  "Command #%" PRIu64 " '%s' stopped with a signal or exception.\n",
2388  (uint64_t)idx + 1, cmd);
2389 
2390  result.SetStatus(tmp_result.GetStatus());
2391  m_debugger.SetAsyncExecution(old_async_execution);
2392 
2393  return;
2394  }
2395  }
2396 
2398  m_debugger.SetAsyncExecution(old_async_execution);
2399 
2400  return;
2401 }
2402 
2403 // Make flags that we can pass into the IOHandler so our delegates can do the
2404 // right thing
2405 enum {
2406  eHandleCommandFlagStopOnContinue = (1u << 0),
2407  eHandleCommandFlagStopOnError = (1u << 1),
2408  eHandleCommandFlagEchoCommand = (1u << 2),
2409  eHandleCommandFlagEchoCommentCommand = (1u << 3),
2410  eHandleCommandFlagPrintResult = (1u << 4),
2411  eHandleCommandFlagPrintErrors = (1u << 5),
2412  eHandleCommandFlagStopOnCrash = (1u << 6)
2413 };
2414 
2416  FileSpec &cmd_file, const ExecutionContext &context,
2417  const CommandInterpreterRunOptions &options, CommandReturnObject &result) {
2418  OverrideExecutionContext(context);
2419  HandleCommandsFromFile(cmd_file, options, result);
2421 }
2422 
2424  const CommandInterpreterRunOptions &options, CommandReturnObject &result) {
2425  if (!FileSystem::Instance().Exists(cmd_file)) {
2426  result.AppendErrorWithFormat(
2427  "Error reading commands from file %s - file not found.\n",
2428  cmd_file.GetFilename().AsCString("<Unknown>"));
2430  return;
2431  }
2432 
2433  std::string cmd_file_path = cmd_file.GetPath();
2434  auto input_file_up =
2436  if (!input_file_up) {
2437  std::string error = llvm::toString(input_file_up.takeError());
2438  result.AppendErrorWithFormatv(
2439  "error: an error occurred read file '{0}': {1}\n", cmd_file_path,
2440  llvm::fmt_consume(input_file_up.takeError()));
2442  return;
2443  }
2444  FileSP input_file_sp = FileSP(std::move(input_file_up.get()));
2445 
2446  Debugger &debugger = GetDebugger();
2447 
2448  uint32_t flags = 0;
2449 
2450  if (options.m_stop_on_continue == eLazyBoolCalculate) {
2451  if (m_command_source_flags.empty()) {
2452  // Stop on continue by default
2453  flags |= eHandleCommandFlagStopOnContinue;
2454  } else if (m_command_source_flags.back() &
2455  eHandleCommandFlagStopOnContinue) {
2456  flags |= eHandleCommandFlagStopOnContinue;
2457  }
2458  } else if (options.m_stop_on_continue == eLazyBoolYes) {
2459  flags |= eHandleCommandFlagStopOnContinue;
2460  }
2461 
2462  if (options.m_stop_on_error == eLazyBoolCalculate) {
2463  if (m_command_source_flags.empty()) {
2465  flags |= eHandleCommandFlagStopOnError;
2466  } else if (m_command_source_flags.back() & eHandleCommandFlagStopOnError) {
2467  flags |= eHandleCommandFlagStopOnError;
2468  }
2469  } else if (options.m_stop_on_error == eLazyBoolYes) {
2470  flags |= eHandleCommandFlagStopOnError;
2471  }
2472 
2473  // stop-on-crash can only be set, if it is present in all levels of
2474  // pushed flag sets.
2475  if (options.GetStopOnCrash()) {
2476  if (m_command_source_flags.empty()) {
2477  flags |= eHandleCommandFlagStopOnCrash;
2478  } else if (m_command_source_flags.back() & eHandleCommandFlagStopOnCrash) {
2479  flags |= eHandleCommandFlagStopOnCrash;
2480  }
2481  }
2482 
2483  if (options.m_echo_commands == eLazyBoolCalculate) {
2484  if (m_command_source_flags.empty()) {
2485  // Echo command by default
2486  flags |= eHandleCommandFlagEchoCommand;
2487  } else if (m_command_source_flags.back() & eHandleCommandFlagEchoCommand) {
2488  flags |= eHandleCommandFlagEchoCommand;
2489  }
2490  } else if (options.m_echo_commands == eLazyBoolYes) {
2491  flags |= eHandleCommandFlagEchoCommand;
2492  }
2493 
2494  // We will only ever ask for this flag, if we echo commands in general.
2496  if (m_command_source_flags.empty()) {
2497  // Echo comments by default
2498  flags |= eHandleCommandFlagEchoCommentCommand;
2499  } else if (m_command_source_flags.back() &
2500  eHandleCommandFlagEchoCommentCommand) {
2501  flags |= eHandleCommandFlagEchoCommentCommand;
2502  }
2503  } else if (options.m_echo_comment_commands == eLazyBoolYes) {
2504  flags |= eHandleCommandFlagEchoCommentCommand;
2505  }
2506 
2507  if (options.m_print_results == eLazyBoolCalculate) {
2508  if (m_command_source_flags.empty()) {
2509  // Print output by default
2510  flags |= eHandleCommandFlagPrintResult;
2511  } else if (m_command_source_flags.back() & eHandleCommandFlagPrintResult) {
2512  flags |= eHandleCommandFlagPrintResult;
2513  }
2514  } else if (options.m_print_results == eLazyBoolYes) {
2515  flags |= eHandleCommandFlagPrintResult;
2516  }
2517 
2518  if (options.m_print_errors == eLazyBoolCalculate) {
2519  if (m_command_source_flags.empty()) {
2520  // Print output by default
2521  flags |= eHandleCommandFlagPrintErrors;
2522  } else if (m_command_source_flags.back() & eHandleCommandFlagPrintErrors) {
2523  flags |= eHandleCommandFlagPrintErrors;
2524  }
2525  } else if (options.m_print_errors == eLazyBoolYes) {
2526  flags |= eHandleCommandFlagPrintErrors;
2527  }
2528 
2529  if (flags & eHandleCommandFlagPrintResult) {
2530  debugger.GetOutputFile().Printf("Executing commands in '%s'.\n",
2531  cmd_file_path.c_str());
2532  }
2533 
2534  // Used for inheriting the right settings when "command source" might
2535  // have nested "command source" commands
2536  lldb::StreamFileSP empty_stream_sp;
2537  m_command_source_flags.push_back(flags);
2538  IOHandlerSP io_handler_sp(new IOHandlerEditline(
2539  debugger, IOHandler::Type::CommandInterpreter, input_file_sp,
2540  empty_stream_sp, // Pass in an empty stream so we inherit the top
2541  // input reader output stream
2542  empty_stream_sp, // Pass in an empty stream so we inherit the top
2543  // input reader error stream
2544  flags,
2545  nullptr, // Pass in NULL for "editline_name" so no history is saved,
2546  // or written
2547  debugger.GetPrompt(), llvm::StringRef(),
2548  false, // Not multi-line
2549  debugger.GetUseColor(), 0, *this, nullptr));
2550  const bool old_async_execution = debugger.GetAsyncExecution();
2551 
2552  // Set synchronous execution if we are not stopping on continue
2553  if ((flags & eHandleCommandFlagStopOnContinue) == 0)
2554  debugger.SetAsyncExecution(false);
2555 
2558 
2559  debugger.RunIOHandlerSync(io_handler_sp);
2560  if (!m_command_source_flags.empty())
2561  m_command_source_flags.pop_back();
2562 
2563  m_command_source_dirs.pop_back();
2565 
2567  debugger.SetAsyncExecution(old_async_execution);
2568 }
2569 
2571 
2572 void CommandInterpreter::SetSynchronous(bool value) {
2573  // Asynchronous mode is not supported during reproducer replay.
2574  if (repro::Reproducer::Instance().GetLoader())
2575  return;
2576  m_synchronous_execution = value;
2577 }
2578 
2580  llvm::StringRef prefix,
2581  llvm::StringRef help_text) {
2582  const uint32_t max_columns = m_debugger.GetTerminalWidth();
2583 
2584  size_t line_width_max = max_columns - prefix.size();
2585  if (line_width_max < 16)
2586  line_width_max = help_text.size() + prefix.size();
2587 
2588  strm.IndentMore(prefix.size());
2589  bool prefixed_yet = false;
2590  while (!help_text.empty()) {
2591  // Prefix the first line, indent subsequent lines to line up
2592  if (!prefixed_yet) {
2593  strm << prefix;
2594  prefixed_yet = true;
2595  } else
2596  strm.Indent();
2597 
2598  // Never print more than the maximum on one line.
2599  llvm::StringRef this_line = help_text.substr(0, line_width_max);
2600 
2601  // Always break on an explicit newline.
2602  std::size_t first_newline = this_line.find_first_of("\n");
2603 
2604  // Don't break on space/tab unless the text is too long to fit on one line.
2605  std::size_t last_space = llvm::StringRef::npos;
2606  if (this_line.size() != help_text.size())
2607  last_space = this_line.find_last_of(" \t");
2608 
2609  // Break at whichever condition triggered first.
2610  this_line = this_line.substr(0, std::min(first_newline, last_space));
2611  strm.PutCString(this_line);
2612  strm.EOL();
2613 
2614  // Remove whitespace / newlines after breaking.
2615  help_text = help_text.drop_front(this_line.size()).ltrim();
2616  }
2617  strm.IndentLess(prefix.size());
2618 }
2619 
2621  llvm::StringRef word_text,
2622  llvm::StringRef separator,
2623  llvm::StringRef help_text,
2624  size_t max_word_len) {
2625  StreamString prefix_stream;
2626  prefix_stream.Printf(" %-*s %*s ", (int)max_word_len, word_text.data(),
2627  (int)separator.size(), separator.data());
2628  OutputFormattedHelpText(strm, prefix_stream.GetString(), help_text);
2629 }
2630 
2631 void CommandInterpreter::OutputHelpText(Stream &strm, llvm::StringRef word_text,
2632  llvm::StringRef separator,
2633  llvm::StringRef help_text,
2634  uint32_t max_word_len) {
2635  int indent_size = max_word_len + separator.size() + 2;
2636 
2637  strm.IndentMore(indent_size);
2638 
2639  StreamString text_strm;
2640  text_strm.Printf("%-*s ", (int)max_word_len, word_text.data());
2641  text_strm << separator << " " << help_text;
2642 
2643  const uint32_t max_columns = m_debugger.GetTerminalWidth();
2644 
2645  llvm::StringRef text = text_strm.GetString();
2646 
2647  uint32_t chars_left = max_columns;
2648 
2649  auto nextWordLength = [](llvm::StringRef S) {
2650  size_t pos = S.find(' ');
2651  return pos == llvm::StringRef::npos ? S.size() : pos;
2652  };
2653 
2654  while (!text.empty()) {
2655  if (text.front() == '\n' ||
2656  (text.front() == ' ' && nextWordLength(text.ltrim(' ')) > chars_left)) {
2657  strm.EOL();
2658  strm.Indent();
2659  chars_left = max_columns - indent_size;
2660  if (text.front() == '\n')
2661  text = text.drop_front();
2662  else
2663  text = text.ltrim(' ');
2664  } else {
2665  strm.PutChar(text.front());
2666  --chars_left;
2667  text = text.drop_front();
2668  }
2669  }
2670 
2671  strm.EOL();
2672  strm.IndentLess(indent_size);
2673 }
2674 
2676  llvm::StringRef search_word, StringList &commands_found,
2677  StringList &commands_help, CommandObject::CommandMap &command_map) {
2678  CommandObject::CommandMap::const_iterator pos;
2679 
2680  for (pos = command_map.begin(); pos != command_map.end(); ++pos) {
2681  llvm::StringRef command_name = pos->first;
2682  CommandObject *cmd_obj = pos->second.get();
2683 
2684  const bool search_short_help = true;
2685  const bool search_long_help = false;
2686  const bool search_syntax = false;
2687  const bool search_options = false;
2688  if (command_name.contains_lower(search_word) ||
2689  cmd_obj->HelpTextContainsWord(search_word, search_short_help,
2690  search_long_help, search_syntax,
2691  search_options)) {
2692  commands_found.AppendString(cmd_obj->GetCommandName());
2693  commands_help.AppendString(cmd_obj->GetHelp());
2694  }
2695 
2696  if (cmd_obj->IsMultiwordObject()) {
2697  CommandObjectMultiword *cmd_multiword = cmd_obj->GetAsMultiwordCommand();
2698  FindCommandsForApropos(search_word, commands_found, commands_help,
2699  cmd_multiword->GetSubcommandDictionary());
2700  }
2701  }
2702 }
2703 
2704 void CommandInterpreter::FindCommandsForApropos(llvm::StringRef search_word,
2705  StringList &commands_found,
2706  StringList &commands_help,
2707  bool search_builtin_commands,
2708  bool search_user_commands,
2709  bool search_alias_commands) {
2710  CommandObject::CommandMap::const_iterator pos;
2711 
2712  if (search_builtin_commands)
2713  FindCommandsForApropos(search_word, commands_found, commands_help,
2714  m_command_dict);
2715 
2716  if (search_user_commands)
2717  FindCommandsForApropos(search_word, commands_found, commands_help,
2718  m_user_dict);
2719 
2720  if (search_alias_commands)
2721  FindCommandsForApropos(search_word, commands_found, commands_help,
2722  m_alias_dict);
2723 }
2724 
2726  return !m_overriden_exe_contexts.empty()
2727  ? m_overriden_exe_contexts.top()
2729 }
2730 
2732  const ExecutionContext &override_context) {
2733  m_overriden_exe_contexts.push(override_context);
2734 }
2735 
2737  if (!m_overriden_exe_contexts.empty())
2739 }
2740 
2742  if (ProcessSP process_sp = GetExecutionContext().GetProcessSP())
2743  m_debugger.FlushProcessOutput(*process_sp, /*flush_stdout*/ true,
2744  /*flush_stderr*/ true);
2745 }
2746 
2748  auto idle_state = CommandHandlingState::eIdle;
2749  if (m_command_state.compare_exchange_strong(
2750  idle_state, CommandHandlingState::eInProgress))
2752  else
2755 }
2756 
2759  if (--m_iohandler_nesting_level == 0) {
2760  auto prev_state = m_command_state.exchange(CommandHandlingState::eIdle);
2761  lldbassert(prev_state != CommandHandlingState::eIdle);
2762  }
2763 }
2764 
2766  auto in_progress = CommandHandlingState::eInProgress;
2767  return m_command_state.compare_exchange_strong(
2768  in_progress, CommandHandlingState::eInterrupted);
2769 }
2770 
2772  bool was_interrupted =
2774  lldbassert(!was_interrupted || m_iohandler_nesting_level > 0);
2775  return was_interrupted;
2776 }
2777 
2779  llvm::StringRef str) {
2780  // Split the output into lines and poll for interrupt requests
2781  const char *data = str.data();
2782  size_t size = str.size();
2783  while (size > 0 && !WasInterrupted()) {
2784  size_t chunk_size = 0;
2785  for (; chunk_size < size; ++chunk_size) {
2786  lldbassert(data[chunk_size] != '\0');
2787  if (data[chunk_size] == '\n') {
2788  ++chunk_size;
2789  break;
2790  }
2791  }
2792  chunk_size = stream.Write(data, chunk_size);
2793  lldbassert(size >= chunk_size);
2794  data += chunk_size;
2795  size -= chunk_size;
2796  }
2797  if (size > 0) {
2798  stream.Printf("\n... Interrupted.\n");
2799  }
2800 }
2801 
2803  llvm::StringRef line, const Flags &io_handler_flags) const {
2804  if (!io_handler_flags.Test(eHandleCommandFlagEchoCommand))
2805  return false;
2806 
2807  llvm::StringRef command = line.trim();
2808  if (command.empty())
2809  return true;
2810 
2811  if (command.front() == m_comment_char)
2812  return io_handler_flags.Test(eHandleCommandFlagEchoCommentCommand);
2813 
2814  return true;
2815 }
2816 
2818  std::string &line) {
2819  // If we were interrupted, bail out...
2820  if (WasInterrupted())
2821  return;
2822 
2823  const bool is_interactive = io_handler.GetIsInteractive();
2824  if (!is_interactive) {
2825  // When we are not interactive, don't execute blank lines. This will happen
2826  // sourcing a commands file. We don't want blank lines to repeat the
2827  // previous command and cause any errors to occur (like redefining an
2828  // alias, get an error and stop parsing the commands file).
2829  if (line.empty())
2830  return;
2831 
2832  // When using a non-interactive file handle (like when sourcing commands
2833  // from a file) we need to echo the command out so we don't just see the
2834  // command output and no command...
2835  if (EchoCommandNonInteractive(line, io_handler.GetFlags()))
2836  io_handler.GetOutputStreamFileSP()->Printf(
2837  "%s%s\n", io_handler.GetPrompt(), line.c_str());
2838  }
2839 
2841 
2843  auto finalize = llvm::make_scope_exit([this]() {
2845  });
2846 
2848  HandleCommand(line.c_str(), eLazyBoolCalculate, result);
2849 
2850  // Now emit the command output text from the command we just executed
2851  if ((result.Succeeded() &&
2852  io_handler.GetFlags().Test(eHandleCommandFlagPrintResult)) ||
2853  io_handler.GetFlags().Test(eHandleCommandFlagPrintErrors)) {
2854  // Display any STDOUT/STDERR _prior_ to emitting the command result text
2855  GetProcessOutput();
2856 
2857  if (!result.GetImmediateOutputStream()) {
2858  llvm::StringRef output = result.GetOutputData();
2859  PrintCommandOutput(*io_handler.GetOutputStreamFileSP(), output);
2860  }
2861 
2862  // Now emit the command error text from the command we just executed
2863  if (!result.GetImmediateErrorStream()) {
2864  llvm::StringRef error = result.GetErrorData();
2866  }
2867  }
2868 
2870 
2871  switch (result.GetStatus()) {
2872  case eReturnStatusInvalid:
2875  case eReturnStatusStarted:
2876  break;
2877 
2880  if (io_handler.GetFlags().Test(eHandleCommandFlagStopOnContinue))
2881  io_handler.SetIsDone(true);
2882  break;
2883 
2884  case eReturnStatusFailed:
2886  if (io_handler.GetFlags().Test(eHandleCommandFlagStopOnError)) {
2888  io_handler.SetIsDone(true);
2889  }
2890  break;
2891 
2892  case eReturnStatusQuit:
2894  io_handler.SetIsDone(true);
2895  break;
2896  }
2897 
2898  // Finally, if we're going to stop on crash, check that here:
2900  result.GetDidChangeProcessState() &&
2901  io_handler.GetFlags().Test(eHandleCommandFlagStopOnCrash) &&
2903  io_handler.SetIsDone(true);
2905  }
2906 }
2907 
2910  Process *process = exe_ctx.GetProcessPtr();
2911 
2912  if (InterruptCommand())
2913  return true;
2914 
2915  if (process) {
2916  StateType state = process->GetState();
2917  if (StateIsRunningState(state)) {
2918  process->Halt();
2919  return true; // Don't do any updating when we are running
2920  }
2921  }
2922 
2923  ScriptInterpreter *script_interpreter =
2925  if (script_interpreter) {
2926  if (script_interpreter->Interrupt())
2927  return true;
2928  }
2929  return false;
2930 }
2931 
2933  CommandReturnObject &result, llvm::Optional<std::string> output_file) {
2934  if (output_file == llvm::None || output_file->empty()) {
2935  std::string now = llvm::to_string(std::chrono::system_clock::now());
2936  std::replace(now.begin(), now.end(), ' ', '_');
2937  const std::string file_name = "lldb_session_" + now + ".log";
2938  FileSpec tmp = HostInfo::GetGlobalTempDir();
2939  tmp.AppendPathComponent(file_name);
2940  output_file = tmp.GetPath();
2941  }
2942 
2943  auto error_out = [&](llvm::StringRef error_message, std::string description) {
2945  error_message, output_file, description);
2946  result.AppendErrorWithFormatv(
2947  "Failed to save session's transcripts to {0}!", *output_file);
2948  return false;
2949  };
2950 
2954 
2955  auto opened_file = FileSystem::Instance().Open(FileSpec(*output_file), flags);
2956 
2957  if (!opened_file)
2958  return error_out("Unable to create file",
2959  llvm::toString(opened_file.takeError()));
2960 
2961  FileUP file = std::move(opened_file.get());
2962 
2963  size_t byte_size = m_transcript_stream.GetSize();
2964 
2965  Status error = file->Write(m_transcript_stream.GetData(), byte_size);
2966 
2967  if (error.Fail() || byte_size != m_transcript_stream.GetSize())
2968  return error_out("Unable to write to destination file",
2969  "Bytes written do not match transcript size.");
2970 
2971  result.AppendMessageWithFormat("Session's transcripts saved to %s\n",
2972  output_file->c_str());
2973 
2974  return true;
2975 }
2976 
2978  if (m_command_source_dirs.empty())
2979  return {};
2980  return m_command_source_dirs.back();
2981 }
2982 
2984  const char *prompt, IOHandlerDelegate &delegate, void *baton) {
2985  Debugger &debugger = GetDebugger();
2986  IOHandlerSP io_handler_sp(
2988  "lldb", // Name of input reader for history
2989  llvm::StringRef::withNullAsEmpty(prompt), // Prompt
2990  llvm::StringRef(), // Continuation prompt
2991  true, // Get multiple lines
2992  debugger.GetUseColor(),
2993  0, // Don't show line numbers
2994  delegate, // IOHandlerDelegate
2995  nullptr)); // FileShadowCollector
2996 
2997  if (io_handler_sp) {
2998  io_handler_sp->SetUserData(baton);
2999  debugger.RunIOHandlerAsync(io_handler_sp);
3000  }
3001 }
3002 
3004  const char *prompt, IOHandlerDelegate &delegate, void *baton) {
3005  Debugger &debugger = GetDebugger();
3006  IOHandlerSP io_handler_sp(
3008  "lldb-python", // Name of input reader for history
3009  llvm::StringRef::withNullAsEmpty(prompt), // Prompt
3010  llvm::StringRef(), // Continuation prompt
3011  true, // Get multiple lines
3012  debugger.GetUseColor(),
3013  0, // Don't show line numbers
3014  delegate, // IOHandlerDelegate
3015  nullptr)); // FileShadowCollector
3016 
3017  if (io_handler_sp) {
3018  io_handler_sp->SetUserData(baton);
3019  debugger.RunIOHandlerAsync(io_handler_sp);
3020  }
3021 }
3022 
3025 }
3026 
3027 lldb::IOHandlerSP
3028 CommandInterpreter::GetIOHandler(bool force_create,
3029  CommandInterpreterRunOptions *options) {
3030  // Always re-create the IOHandlerEditline in case the input changed. The old
3031  // instance might have had a non-interactive input and now it does or vice
3032  // versa.
3033  if (force_create || !m_command_io_handler_sp) {
3034  // Always re-create the IOHandlerEditline in case the input changed. The
3035  // old instance might have had a non-interactive input and now it does or
3036  // vice versa.
3037  uint32_t flags = 0;
3038 
3039  if (options) {
3040  if (options->m_stop_on_continue == eLazyBoolYes)
3041  flags |= eHandleCommandFlagStopOnContinue;
3042  if (options->m_stop_on_error == eLazyBoolYes)
3043  flags |= eHandleCommandFlagStopOnError;
3044  if (options->m_stop_on_crash == eLazyBoolYes)
3045  flags |= eHandleCommandFlagStopOnCrash;
3046  if (options->m_echo_commands != eLazyBoolNo)
3047  flags |= eHandleCommandFlagEchoCommand;
3048  if (options->m_echo_comment_commands != eLazyBoolNo)
3049  flags |= eHandleCommandFlagEchoCommentCommand;
3050  if (options->m_print_results != eLazyBoolNo)
3051  flags |= eHandleCommandFlagPrintResult;
3052  if (options->m_print_errors != eLazyBoolNo)
3053  flags |= eHandleCommandFlagPrintErrors;
3054  } else {
3055  flags = eHandleCommandFlagEchoCommand | eHandleCommandFlagPrintResult |
3056  eHandleCommandFlagPrintErrors;
3057  }
3058 
3059  m_command_io_handler_sp = std::make_shared<IOHandlerEditline>(
3062  m_debugger.GetErrorStreamSP(), flags, "lldb", m_debugger.GetPrompt(),
3063  llvm::StringRef(), // Continuation prompt
3064  false, // Don't enable multiple line input, just single line commands
3066  0, // Don't show line numbers
3067  *this, // IOHandlerDelegate
3068  GetDebugger().GetInputRecorder());
3069  }
3070  return m_command_io_handler_sp;
3071 }
3072 
3074  CommandInterpreterRunOptions &options) {
3075  // Always re-create the command interpreter when we run it in case any file
3076  // handles have changed.
3077  bool force_create = true;
3078  m_debugger.RunIOHandlerAsync(GetIOHandler(force_create, &options));
3080 
3081  if (options.GetAutoHandleEvents())
3083 
3084  if (options.GetSpawnThread()) {
3086  } else {
3088 
3089  if (options.GetAutoHandleEvents())
3091  }
3092 
3093  return m_result;
3094 }
3095 
3096 CommandObject *
3098  CommandReturnObject &result) {
3099  std::string scratch_command(command_line); // working copy so we don't modify
3100  // command_line unless we succeed
3101  CommandObject *cmd_obj = nullptr;
3102  StreamString revised_command_line;
3103  bool wants_raw_input = false;
3104  size_t actual_cmd_name_len = 0;
3105  std::string next_word;
3106  StringList matches;
3107  bool done = false;
3108  while (!done) {
3109  char quote_char = '\0';
3110  std::string suffix;
3111  ExtractCommand(scratch_command, next_word, suffix, quote_char);
3112  if (cmd_obj == nullptr) {
3113  std::string full_name;
3114  bool is_alias = GetAliasFullName(next_word, full_name);
3115  cmd_obj = GetCommandObject(next_word, &matches);
3116  bool is_real_command =
3117  (!is_alias) || (cmd_obj != nullptr && !cmd_obj->IsAlias());
3118  if (!is_real_command) {
3119  matches.Clear();
3120  std::string alias_result;
3121  cmd_obj =
3122  BuildAliasResult(full_name, scratch_command, alias_result, result);
3123  revised_command_line.Printf("%s", alias_result.c_str());
3124  if (cmd_obj) {
3125  wants_raw_input = cmd_obj->WantsRawCommandString();
3126  actual_cmd_name_len = cmd_obj->GetCommandName().size();
3127  }
3128  } else {
3129  if (cmd_obj) {
3130  llvm::StringRef cmd_name = cmd_obj->GetCommandName();
3131  actual_cmd_name_len += cmd_name.size();
3132  revised_command_line.Printf("%s", cmd_name.str().c_str());
3133  wants_raw_input = cmd_obj->WantsRawCommandString();
3134  } else {
3135  revised_command_line.Printf("%s", next_word.c_str());
3136  }
3137  }
3138  } else {
3139  if (cmd_obj->IsMultiwordObject()) {
3140  CommandObject *sub_cmd_obj =
3141  cmd_obj->GetSubcommandObject(next_word.c_str());
3142  if (sub_cmd_obj) {
3143  // The subcommand's name includes the parent command's name, so
3144  // restart rather than append to the revised_command_line.
3145  llvm::StringRef sub_cmd_name = sub_cmd_obj->GetCommandName();
3146  actual_cmd_name_len = sub_cmd_name.size() + 1;
3147  revised_command_line.Clear();
3148  revised_command_line.Printf("%s", sub_cmd_name.str().c_str());
3149  cmd_obj = sub_cmd_obj;
3150  wants_raw_input = cmd_obj->WantsRawCommandString();
3151  } else {
3152  if (quote_char)
3153  revised_command_line.Printf(" %c%s%s%c", quote_char,
3154  next_word.c_str(), suffix.c_str(),
3155  quote_char);
3156  else
3157  revised_command_line.Printf(" %s%s", next_word.c_str(),
3158  suffix.c_str());
3159  done = true;
3160  }
3161  } else {
3162  if (quote_char)
3163  revised_command_line.Printf(" %c%s%s%c", quote_char,
3164  next_word.c_str(), suffix.c_str(),
3165  quote_char);
3166  else
3167  revised_command_line.Printf(" %s%s", next_word.c_str(),
3168  suffix.c_str());
3169  done = true;
3170  }
3171  }
3172 
3173  if (cmd_obj == nullptr) {
3174  const size_t num_matches = matches.GetSize();
3175  if (matches.GetSize() > 1) {
3176  StreamString error_msg;
3177  error_msg.Printf("Ambiguous command '%s'. Possible matches:\n",
3178  next_word.c_str());
3179 
3180  for (uint32_t i = 0; i < num_matches; ++i) {
3181  error_msg.Printf("\t%s\n", matches.GetStringAtIndex(i));
3182  }
3183  result.AppendRawError(error_msg.GetString());
3184  } else {
3185  // We didn't have only one match, otherwise we wouldn't get here.
3186  lldbassert(num_matches == 0);
3187  result.AppendErrorWithFormat("'%s' is not a valid command.\n",
3188  next_word.c_str());
3189  }
3191  return nullptr;
3192  }
3193 
3194  if (cmd_obj->IsMultiwordObject()) {
3195  if (!suffix.empty()) {
3196  result.AppendErrorWithFormat(
3197  "command '%s' did not recognize '%s%s%s' as valid (subcommand "
3198  "might be invalid).\n",
3199  cmd_obj->GetCommandName().str().c_str(),
3200  next_word.empty() ? "" : next_word.c_str(),
3201  next_word.empty() ? " -- " : " ", suffix.c_str());
3203  return nullptr;
3204  }
3205  } else {
3206  // If we found a normal command, we are done
3207  done = true;
3208  if (!suffix.empty()) {
3209  switch (suffix[0]) {
3210  case '/':
3211  // GDB format suffixes
3212  {
3213  Options *command_options = cmd_obj->GetOptions();
3214  if (command_options &&
3215  command_options->SupportsLongOption("gdb-format")) {
3216  std::string gdb_format_option("--gdb-format=");
3217  gdb_format_option += (suffix.c_str() + 1);
3218 
3219  std::string cmd = std::string(revised_command_line.GetString());
3220  size_t arg_terminator_idx = FindArgumentTerminator(cmd);
3221  if (arg_terminator_idx != std::string::npos) {
3222  // Insert the gdb format option before the "--" that terminates
3223  // options
3224  gdb_format_option.append(1, ' ');
3225  cmd.insert(arg_terminator_idx, gdb_format_option);
3226  revised_command_line.Clear();
3227  revised_command_line.PutCString(cmd);
3228  } else
3229  revised_command_line.Printf(" %s", gdb_format_option.c_str());
3230 
3231  if (wants_raw_input &&
3232  FindArgumentTerminator(cmd) == std::string::npos)
3233  revised_command_line.PutCString(" --");
3234  } else {
3235  result.AppendErrorWithFormat(
3236  "the '%s' command doesn't support the --gdb-format option\n",
3237  cmd_obj->GetCommandName().str().c_str());
3239  return nullptr;
3240  }
3241  }
3242  break;
3243 
3244  default:
3245  result.AppendErrorWithFormat(
3246  "unknown command shorthand suffix: '%s'\n", suffix.c_str());
3248  return nullptr;
3249  }
3250  }
3251  }
3252  if (scratch_command.empty())
3253  done = true;
3254  }
3255 
3256  if (!scratch_command.empty())
3257  revised_command_line.Printf(" %s", scratch_command.c_str());
3258 
3259  if (cmd_obj != nullptr)
3260  command_line = std::string(revised_command_line.GetString());
3261 
3262  return cmd_obj;
3263 }
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Definition: Stream.cpp:130
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Definition: CommandObjectLanguage.h:15
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Definition: lldb-enumerations.h:274
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Definition: lldb-enumerations.h:276
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Definition: CommandObjectThread.h:16
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Definition: Broadcaster.h:262
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Definition: CommandObjectPlatform.h:18
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Definition: lldb-enumerations.h:245
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Definition: Args.cpp:259
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Definition: lldb-enumerations.h:437
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Definition: Plugins/Trace/intel-pt/CMakeLists.txt:6
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Definition: lldb-private-enumerations.h:115
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Definition: CommandObject.h:146
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Definition: CommandObject.cpp:276
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Inserts a class owned copy of arg_str at the beginning of the argument vector.
Definition: Args.cpp:289
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Definition: CommandInterpreter.h:644
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Definition: CompletionRequest.h:143
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Definition: StringList.cpp:141
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Definition: CommandInterpreter.cpp:470
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Definition: CommandInterpreter.h:244
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Definition: CommandInterpreter.h:138
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@ eCommandInterpreterResultInferiorCrash
Stopped because the corresponding option was set and the inferior crashed.
Definition: lldb-enumerations.h:1107
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Definition: ScriptInterpreter.h:69
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Definition: Log.h:242
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Definition: Stream.cpp:107
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Definition: common/FileSystem.cpp:45
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Definition: CommandReturnObject.cpp:48
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A delegate class for use with IOHandler subclasses.
Definition: IOHandler.h:195
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size_t GetCursorIndex() const
Definition: CompletionRequest.h:156
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Definition: FileSpec.cpp:435
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A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
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Definition: CommandObjectSession.h:16
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const CommandAlias * GetAlias(llvm::StringRef alias_name) const
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@ eLazyBoolCalculate
Definition: lldb-private-enumerations.h:115
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OptionArgVectorSP GetOptionArguments() const
Definition: CommandAlias.h:64
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lldb_private::CommandInterpreter::CommandHandlingState::eInProgress
@ eInProgress
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Definition: Debugger.cpp:794
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uint32_t m_command_source_depth
Definition: CommandInterpreter.h:655
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StreamString m_transcript_stream
Definition: CommandInterpreter.h:668
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Definition: CommandObjectSettings.h:18
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@ eOpenOptionWrite
Definition: File.h:48
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llvm::Optional< int > m_quit_exit_code
Definition: CommandInterpreter.h:664
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void AddCompletion(llvm::StringRef completion, llvm::StringRef description="", CompletionMode mode=CompletionMode::Normal)
Adds a possible completion string.
Definition: CompletionRequest.h:167
lldb_private::IOHandler::Type::CommandInterpreter
@ CommandInterpreter
lldb_private::CommandInterpreter::GetExpandRegexAliases
bool GetExpandRegexAliases() const
Definition: CommandInterpreter.cpp:135
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size_t Write(const void *src, size_t src_len)
Output character bytes to the stream.
Definition: Stream.h:101
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lldb_private::CommandInterpreter::GetExecutionContext
ExecutionContext GetExecutionContext() const
lldb::eReturnStatusQuit
@ eReturnStatusQuit
Definition: lldb-enumerations.h:266
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void SetAsyncExecution(bool async)
Definition: Debugger.cpp:798
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Definition: CommandObjectMemory.h:16
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A SmallBitVector that represents a set of source languages (lldb::LanguageType).
Definition: TypeSystem.h:40
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FileSpec GetCurrentSourceDir()
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std::stack< ExecutionContext > m_overriden_exe_contexts
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lldb::OptionValuePropertiesSP m_collection_sp
Definition: UserSettingsController.h:86
lldb::eExpressionParseError
@ eExpressionParseError
Definition: lldb-enumerations.h:273
lldb::StateType
StateType
Process and Thread States.
Definition: lldb-enumerations.h:73
Stream.h
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Definition: Log.h:49
lldb_private::Stream::PutCString
size_t PutCString(llvm::StringRef cstr)
Output a C string to the stream.
Definition: Stream.cpp:63
lldb_private::IOHandler::Type::CommandList
@ CommandList
llvm::SmallVectorImpl
Definition: Disassembler.h:42
lldb_private::CommandInterpreter::GetCommandSPExact
lldb::CommandObjectSP GetCommandSPExact(llvm::StringRef cmd, bool include_aliases=false) const
lldb_private::CommandInterpreterRunOptions::SetStopOnError
void SetStopOnError(bool stop_on_error)
Definition: CommandInterpreter.h:134
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lldb_private::CommandInterpreter::OutputFormattedHelpText
void OutputFormattedHelpText(Stream &strm, llvm::StringRef prefix, llvm::StringRef help_text)
lldb_private::CommandInterpreter::eCommandTypesBuiltin
@ eCommandTypesBuiltin
Definition: CommandInterpreter.h:241
lldb_private::Language::GetNameForLanguageType
static const char * GetNameForLanguageType(lldb::LanguageType language)
Definition: Language.cpp:206
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Save the current debugger session transcript to a file on disk.
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llvm::Optional< llvm::StringRef > FindString(llvm::StringRef input_str) const
Definition: CommandHistory.cpp:27
CommandObjectPlatform.h
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Definition: Broadcaster.h:242
lldb_private::LoadCWDlldbinitFile
LoadCWDlldbinitFile
Definition: Target.h:56
lldb_private::FileSpec::GetPath
size_t GetPath(char *path, size_t max_path_length, bool denormalize=true) const
Extract the full path to the file.
Definition: FileSpec.cpp:348
lldb_private::CommandReturnObject::AppendError
void void AppendError(llvm::StringRef in_string)
Definition: CommandReturnObject.cpp:100
lldb_private::CommandInterpreter::SetSaveSessionOnQuit
void SetSaveSessionOnQuit(bool enable)
Definition: CommandInterpreter.cpp:158
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static Reproducer & Instance()
Definition: Reproducer.cpp:23
lldb_private::Debugger::GetPrompt
llvm::StringRef GetPrompt() const
Definition: Debugger.cpp:273
REGISTER_COMMAND_OBJECT
#define REGISTER_COMMAND_OBJECT(NAME, CLASS)
Definition: CommandInterpreter.cpp:487
lldb_private::Args::GetArgumentCount
size_t GetArgumentCount() const
Gets the number of arguments left in this command object.
Definition: Args.h:118
CommandObjectSource.h
lldb_private::CommandInterpreter::GetCommandSP
lldb::CommandObjectSP GetCommandSP(llvm::StringRef cmd, bool include_aliases=true, bool exact=true, StringList *matches=nullptr, StringList *descriptions=nullptr) const
lldb_private::CommandInterpreter::SetSynchronous
void SetSynchronous(bool value)
lldb_private::CommandInterpreterRunOptions::SetPrintErrors
void SetPrintErrors(bool print_errors)
Definition: CommandInterpreter.h:166
lldb_private::CommandInterpreter::GetAutoSuggestionForCommand
llvm::Optional< std::string > GetAutoSuggestionForCommand(llvm::StringRef line)
Returns the auto-suggestion string that should be added to the given command line.
lldb_private::CommandInterpreterRunOptions::m_stop_on_crash
LazyBool m_stop_on_crash
Definition: CommandInterpreter.h:192
lldb
Definition: SBAddress.h:15
File.h
lldb_private::CommandObjectMultiwordSource
Definition: CommandObjectSource.h:19
lldb_private::CommandObjectRegister
Definition: CommandObjectRegister.h:18
lldb_private::IOHandler::GetOutputStreamFileSP
lldb::StreamFileSP GetOutputStreamFileSP()
Definition: IOHandler.cpp:108
lldb_private::FileSpec::GetFilename
ConstString & GetFilename()
Filename string get accessor.
Definition: FileSpec.cpp:341
lldb_private::CommandReturnObject::AppendMessage
void AppendMessage(llvm::StringRef in_string)
Definition: CommandReturnObject.cpp:88
lldb_private::CommandObject::WantsRawCommandString
virtual bool WantsRawCommandString()=0
lldb_private::CommandInterpreter::eBroadcastBitResetPrompt
@ eBroadcastBitResetPrompt
Definition: CommandInterpreter.h:227
CommandCompletions.h
lldb_private::CommandHistory::AppendString
void AppendString(llvm::StringRef str, bool reject_if_dupe=true)
Definition: CommandHistory.cpp:78
lldb_private::Scalar::GetValue
void GetValue(Stream *s, bool show_type) const
Definition: Scalar.cpp:155
lldb_private::IOHandler::GetErrorStreamFileSP
lldb::StreamFileSP GetErrorStreamFileSP()
Definition: IOHandler.cpp:110
lldb_private::CommandObject::GetHelp
virtual llvm::StringRef GetHelp()
Definition: CommandObject.cpp:53
lldb_private::CommandInterpreter::StartHandlingCommand
void StartHandlingCommand()
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Definition: CompletionRequest.h:100
CommandObjectHelp.h
lldb_private::CommandReturnObject::GetDidChangeProcessState
bool GetDidChangeProcessState()
Definition: CommandReturnObject.cpp:157
lldb_private::IOHandler::GetPrompt
virtual const char * GetPrompt()
Definition: IOHandler.h:102
lldb_private::OptionArgVectorSP
std::shared_ptr< OptionArgVector > OptionArgVectorSP
Definition: Options.h:29
lldb_private::CommandInterpreter::HandleCommands
void HandleCommands(const StringList &commands, const ExecutionContext &context, const CommandInterpreterRunOptions &options, CommandReturnObject &result)
Execute a list of commands in sequence.
lldb_private::IOHandlerEditline
Definition: IOHandler.h:332
lldb::eCommandInterpreterResultQuitRequested
@ eCommandInterpreterResultQuitRequested
Stopped because quit was requested.
Definition: lldb-enumerations.h:1112
lldb_private::CommandCompletions::eSymbolCompletion
@ eSymbolCompletion
Definition: CommandCompletions.h:31
CommandObjectType.h