1 //===-- Commands.cpp - Implement various commands for the CLI -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements many builtin user commands.
12 //===----------------------------------------------------------------------===//
14 #include "CLIDebugger.h"
15 #include "CLICommand.h"
16 #include "llvm/Debugger/ProgramInfo.h"
17 #include "llvm/Debugger/RuntimeInfo.h"
18 #include "llvm/Debugger/SourceLanguage.h"
19 #include "llvm/Debugger/SourceFile.h"
20 #include "llvm/Debugger/InferiorProcess.h"
21 #include "Support/FileUtilities.h"
22 #include "Support/StringExtras.h"
26 /// getCurrentLanguage - Return the current source language that the user is
27 /// playing around with. This is aquired from the current stack frame of a
28 /// running program if one exists, but this value can be explicitly set by the
30 const SourceLanguage &CLIDebugger::getCurrentLanguage() const {
31 // If the user explicitly switched languages with 'set language', use what
33 if (CurrentLanguage) {
34 return *CurrentLanguage;
35 } else if (Dbg.isProgramRunning()) {
36 // Otherwise, if the program is running, infer the current language from it.
37 const GlobalVariable *FuncDesc =
38 getRuntimeInfo().getCurrentFrame().getFunctionDesc();
39 return getProgramInfo().getFunction(FuncDesc).getSourceFile().getLanguage();
41 // Otherwise, default to C like GDB apparently does.
42 return SourceLanguage::getCFamilyInstance();
46 /// startProgramRunning - If the program has been updated, reload it, then
47 /// start executing the program.
48 void CLIDebugger::startProgramRunning() {
51 // If the program has been modified, reload it!
52 std::string Program = Dbg.getProgramPath();
53 if (TheProgramInfo->getProgramTimeStamp() != getFileTimestamp(Program)) {
54 std::cout << "'" << Program << "' has changed; re-reading program.\n";
56 // Unload an existing program. This kills the program if necessary.
58 delete TheProgramInfo;
62 Dbg.loadProgram(Program);
63 TheProgramInfo = new ProgramInfo(Dbg.getProgram());
66 std::cout << "Starting program: " << Dbg.getProgramPath() << "\n";
69 // There was no current frame.
73 /// printSourceLine - Print the specified line of the current source file.
74 /// If the specified line is invalid (the source file could not be loaded or
75 /// the line number is out of range), don't print anything, but return true.
76 bool CLIDebugger::printSourceLine(unsigned LineNo) {
77 assert(CurrentFile && "There is no current source file to print!");
78 const char *LineStart, *LineEnd;
79 CurrentFile->getSourceLine(LineNo-1, LineStart, LineEnd);
80 if (LineStart == 0) return true;
83 // If this is the line the program is currently stopped at, print a marker.
84 if (Dbg.isProgramRunning()) {
85 unsigned CurLineNo, CurColNo;
86 const SourceFileInfo *CurSFI;
87 getRuntimeInfo().getCurrentFrame().getSourceLocation(CurLineNo, CurColNo,
90 if (CurLineNo == LineNo && CurrentFile == &CurSFI->getSourceText())
94 std::cout << "\t" << std::string(LineStart, LineEnd) << "\n";
98 /// printProgramLocation - Print a line of the place where the current stack
99 /// frame has stopped and the source line it is on.
101 void CLIDebugger::printProgramLocation(bool PrintLocation) {
102 assert(Dbg.isProgramLoaded() && Dbg.isProgramRunning() &&
103 "Error program is not loaded and running!");
105 // Figure out where the program stopped...
106 StackFrame &SF = getRuntimeInfo().getCurrentFrame();
107 unsigned LineNo, ColNo;
108 const SourceFileInfo *FileDesc;
109 SF.getSourceLocation(LineNo, ColNo, FileDesc);
111 // If requested, print out some program information about WHERE we are.
113 // FIXME: print the current function arguments
114 if (const GlobalVariable *FuncDesc = SF.getFunctionDesc())
115 std::cout << getProgramInfo().getFunction(FuncDesc).getSymbolicName();
117 std::cout << "<unknown function>";
119 CurrentFile = &FileDesc->getSourceText();
121 std::cout << " at " << CurrentFile->getFilename() << ":" << LineNo;
122 if (ColNo) std::cout << ":" << ColNo << "\n";
125 if (printSourceLine(LineNo))
126 std::cout << "<could not load source file>\n";
128 LineListedStart = LineNo-ListSize/2+1;
129 if ((int)LineListedStart < 1) LineListedStart = 1;
130 LineListedEnd = LineListedStart+1;
134 /// eliminateRunInfo - We are about to run the program. Forget any state
135 /// about how the program used to be stopped.
136 void CLIDebugger::eliminateRunInfo() {
137 delete TheRuntimeInfo;
141 /// programStoppedSuccessfully - This method updates internal data
142 /// structures to reflect the fact that the program just executed a while,
143 /// and has successfully stopped.
144 void CLIDebugger::programStoppedSuccessfully() {
145 assert(TheRuntimeInfo==0 && "Someone forgot to release the old RuntimeInfo!");
147 TheRuntimeInfo = new RuntimeInfo(TheProgramInfo, Dbg.getRunningProcess());
149 // FIXME: if there are any breakpoints at the current location, print them as
152 // Since the program as successfully stopped, print its location.
153 void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
154 printProgramLocation(CurrentFrame != LastCurrentFrame);
155 LastCurrentFrame = CurrentFrame;
160 /// getUnsignedIntegerOption - Get an unsigned integer number from the Val
161 /// string. Check to make sure that the string contains an unsigned integer
162 /// token, and if not, throw an exception. If isOnlyOption is set, also throw
163 /// an exception if there is extra junk at the end of the string.
164 static unsigned getUnsignedIntegerOption(const char *Msg, std::string &Val,
165 bool isOnlyOption = true) {
166 std::string Tok = getToken(Val);
167 if (Tok.empty() || (isOnlyOption && !getToken(Val).empty()))
168 throw std::string(Msg) + " expects an unsigned integer argument.";
171 unsigned Result = strtoul(Tok.c_str(), &EndPtr, 0);
172 if (EndPtr != Tok.c_str()+Tok.size())
173 throw std::string(Msg) + " expects an unsigned integer argument.";
178 /// getOptionalUnsignedIntegerOption - This method is just like
179 /// getUnsignedIntegerOption, but if the argument value is not specified, a
180 /// default is returned instead of causing an error.
182 getOptionalUnsignedIntegerOption(const char *Msg, unsigned Default,
183 std::string &Val, bool isOnlyOption = true) {
184 // Check to see if the value was specified...
185 std::string TokVal = getToken(Val);
186 if (TokVal.empty()) return Default;
188 // If it was specified, add it back to the value we are parsing...
191 // And parse normally.
192 return getUnsignedIntegerOption(Msg, Val, isOnlyOption);
196 /// parseProgramOptions - This method parses the Options string and loads it
197 /// as options to be passed to the program. This is used by the run command
198 /// and by 'set args'.
199 void CLIDebugger::parseProgramOptions(std::string &Options) {
200 // FIXME: tokenizing by whitespace is clearly incorrect. Instead we should
201 // honor quotes and other things that a shell would. Also in the future we
202 // should support redirection of standard IO.
204 std::vector<std::string> Arguments;
205 for (std::string A = getToken(Options); !A.empty(); A = getToken(Options))
206 Arguments.push_back(A);
207 Dbg.setProgramArguments(Arguments.begin(), Arguments.end());
211 //===----------------------------------------------------------------------===//
212 // Program startup and shutdown options
213 //===----------------------------------------------------------------------===//
216 /// file command - If the user specifies an option, search the PATH for the
217 /// specified program/bytecode file and load it. If the user does not specify
218 /// an option, unload the current program.
219 void CLIDebugger::fileCommand(std::string &Options) {
220 std::string Prog = getToken(Options);
221 if (!getToken(Options).empty())
222 throw "file command takes at most one argument.";
224 // Check to make sure the user knows what they are doing
225 if (Dbg.isProgramRunning() &&
226 !askYesNo("A program is already loaded. Kill it?"))
229 // Unload an existing program. This kills the program if necessary.
231 delete TheProgramInfo;
236 // If requested, start the new program.
238 std::cout << "Unloaded program.\n";
240 std::cout << "Loading program... " << std::flush;
241 Dbg.loadProgram(Prog);
242 assert(Dbg.isProgramLoaded() &&
243 "loadProgram succeeded, but not program loaded!");
244 TheProgramInfo = new ProgramInfo(Dbg.getProgram());
245 std::cout << "successfully loaded '" << Dbg.getProgramPath() << "'!\n";
250 void CLIDebugger::createCommand(std::string &Options) {
251 if (!getToken(Options).empty())
252 throw "create command does not take any arguments.";
253 if (!Dbg.isProgramLoaded()) throw "No program loaded.";
254 if (Dbg.isProgramRunning() &&
255 !askYesNo("The program is already running. Restart from the beginning?"))
258 // Start the program running.
259 startProgramRunning();
261 // The program stopped!
262 programStoppedSuccessfully();
265 void CLIDebugger::killCommand(std::string &Options) {
266 if (!getToken(Options).empty())
267 throw "kill command does not take any arguments.";
268 if (!Dbg.isProgramRunning())
269 throw "No program is currently being run.";
271 if (askYesNo("Kill the program being debugged?"))
276 void CLIDebugger::quitCommand(std::string &Options) {
277 if (!getToken(Options).empty())
278 throw "quit command does not take any arguments.";
280 if (Dbg.isProgramRunning() &&
281 !askYesNo("The program is running. Exit anyway?"))
284 // Throw exception to get out of the user-input loop.
289 //===----------------------------------------------------------------------===//
290 // Program execution commands
291 //===----------------------------------------------------------------------===//
293 void CLIDebugger::runCommand(std::string &Options) {
294 if (!Dbg.isProgramLoaded()) throw "No program loaded.";
295 if (Dbg.isProgramRunning() &&
296 !askYesNo("The program is already running. Restart from the beginning?"))
299 // Parse all of the options to the run command, which specify program
300 // arguments to run with.
301 parseProgramOptions(Options);
305 // Start the program running.
306 startProgramRunning();
308 // Start the program running...
310 contCommand(Options);
313 void CLIDebugger::contCommand(std::string &Options) {
314 if (!getToken(Options).empty()) throw "cont argument not supported yet.";
315 if (!Dbg.isProgramRunning()) throw "Program is not running.";
321 // The program stopped!
322 programStoppedSuccessfully();
325 void CLIDebugger::stepCommand(std::string &Options) {
326 if (!Dbg.isProgramRunning()) throw "Program is not running.";
328 // Figure out how many times to step.
330 getOptionalUnsignedIntegerOption("'step' command", 1, Options);
334 // Step the specified number of times.
335 for (; Amount; --Amount)
338 // The program stopped!
339 programStoppedSuccessfully();
342 void CLIDebugger::nextCommand(std::string &Options) {
343 if (!Dbg.isProgramRunning()) throw "Program is not running.";
345 getOptionalUnsignedIntegerOption("'next' command", 1, Options);
349 for (; Amount; --Amount)
352 // The program stopped!
353 programStoppedSuccessfully();
356 void CLIDebugger::finishCommand(std::string &Options) {
357 if (!getToken(Options).empty())
358 throw "finish command does not take any arguments.";
359 if (!Dbg.isProgramRunning()) throw "Program is not running.";
361 // Figure out where we are exactly. If the user requests that we return from
362 // a frame that is not the top frame, make sure we get it.
363 void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
367 Dbg.finishProgram(CurrentFrame);
369 // The program stopped!
370 programStoppedSuccessfully();
373 //===----------------------------------------------------------------------===//
374 // Stack frame commands
375 //===----------------------------------------------------------------------===//
377 void CLIDebugger::backtraceCommand(std::string &Options) {
378 // Accepts "full", n, -n
379 if (!getToken(Options).empty())
380 throw "FIXME: bt command argument not implemented yet!";
382 RuntimeInfo &RI = getRuntimeInfo();
383 ProgramInfo &PI = getProgramInfo();
386 for (unsigned i = 0; ; ++i) {
387 StackFrame &SF = RI.getStackFrame(i);
388 std::cout << "#" << i;
389 if (i == RI.getCurrentFrameIdx())
391 std::cout << "\t" << SF.getFrameID() << " in ";
392 if (const GlobalVariable *G = SF.getFunctionDesc())
393 std::cout << PI.getFunction(G).getSymbolicName();
395 unsigned LineNo, ColNo;
396 const SourceFileInfo *SFI;
397 SF.getSourceLocation(LineNo, ColNo, SFI);
398 if (!SFI->getBaseName().empty()) {
399 std::cout << " at " << SFI->getBaseName();
401 std::cout << ":" << LineNo;
403 std::cout << ":" << ColNo;
407 // FIXME: when we support shared libraries, we should print ' from foo.so'
408 // if the stack frame is from a different object than the current one.
413 // Stop automatically when we run off the bottom of the stack.
417 void CLIDebugger::upCommand(std::string &Options) {
419 getOptionalUnsignedIntegerOption("'up' command", 1, Options);
421 RuntimeInfo &RI = getRuntimeInfo();
422 unsigned CurFrame = RI.getCurrentFrameIdx();
424 // Check to see if we go can up the specified number of frames.
426 RI.getStackFrame(CurFrame+Num);
429 throw "Initial frame selected; you cannot go up.";
431 throw "Cannot go up " + utostr(Num) + " frames!";
434 RI.setCurrentFrameIdx(CurFrame+Num);
435 printProgramLocation();
438 void CLIDebugger::downCommand(std::string &Options) {
440 getOptionalUnsignedIntegerOption("'down' command", 1, Options);
442 RuntimeInfo &RI = getRuntimeInfo();
443 unsigned CurFrame = RI.getCurrentFrameIdx();
445 // Check to see if we can go up the specified number of frames.
448 throw "Bottom (i.e., innermost) frame selected; you cannot go down.";
450 throw "Cannot go down " + utostr(Num) + " frames!";
452 RI.setCurrentFrameIdx(CurFrame-Num);
453 printProgramLocation();
456 void CLIDebugger::frameCommand(std::string &Options) {
457 RuntimeInfo &RI = getRuntimeInfo();
458 unsigned CurFrame = RI.getCurrentFrameIdx();
461 getOptionalUnsignedIntegerOption("'frame' command", CurFrame, Options);
463 // Check to see if we go to the specified frame.
464 RI.getStackFrame(Num);
466 RI.setCurrentFrameIdx(Num);
467 printProgramLocation();
471 //===----------------------------------------------------------------------===//
472 // Breakpoint related commands
473 //===----------------------------------------------------------------------===//
475 void CLIDebugger::breakCommand(std::string &Options) {
476 // Figure out where the user wants a breakpoint.
477 const SourceFile *File;
480 // Check to see if the user specified a line specifier.
481 std::string Option = getToken(Options); // strip whitespace
482 if (!Option.empty()) {
483 Options = Option + Options; // reconstruct string
485 // Parse the line specifier.
486 parseLineSpec(Options, File, LineNo);
488 // Build a line specifier for the current stack frame.
489 throw "FIXME: breaking at the current location is not implemented yet!";
492 if (!File) File = CurrentFile;
494 throw "Unknown file to place breakpoint!";
496 std::cerr << "Break: " << File->getFilename() << ":" << LineNo << "\n";
498 throw "breakpoints not implemented yet!";
501 //===----------------------------------------------------------------------===//
502 // Miscellaneous commands
503 //===----------------------------------------------------------------------===//
505 void CLIDebugger::infoCommand(std::string &Options) {
506 std::string What = getToken(Options);
508 if (What.empty() || !getToken(Options).empty())
509 throw "info command expects exactly one argument.";
511 if (What == "frame") {
512 } else if (What == "functions") {
513 const std::map<const GlobalVariable*, SourceFunctionInfo*> &Functions
514 = getProgramInfo().getSourceFunctions();
515 std::cout << "All defined functions:\n";
516 // FIXME: GDB groups these by source file. We could do that I guess.
517 for (std::map<const GlobalVariable*, SourceFunctionInfo*>::const_iterator
518 I = Functions.begin(), E = Functions.end(); I != E; ++I) {
519 std::cout << I->second->getSymbolicName() << "\n";
522 } else if (What == "source") {
523 if (CurrentFile == 0)
524 throw "No current source file.";
526 // Get the SourceFile information for the current file.
527 const SourceFileInfo &SF =
528 getProgramInfo().getSourceFile(CurrentFile->getDescriptor());
530 std::cout << "Current source file is: " << SF.getBaseName() << "\n"
531 << "Compilation directory is: " << SF.getDirectory() << "\n";
532 if (unsigned NL = CurrentFile->getNumLines())
533 std::cout << "Located in: " << CurrentFile->getFilename() << "\n"
534 << "Contains " << NL << " lines\n";
536 std::cout << "Could not find source file.\n";
537 std::cout << "Source language is "
538 << SF.getLanguage().getSourceLanguageName() << "\n";
540 } else if (What == "sources") {
541 const std::map<const GlobalVariable*, SourceFileInfo*> &SourceFiles =
542 getProgramInfo().getSourceFiles();
543 std::cout << "Source files for the program:\n";
544 for (std::map<const GlobalVariable*, SourceFileInfo*>::const_iterator I =
545 SourceFiles.begin(), E = SourceFiles.end(); I != E;) {
546 std::cout << I->second->getDirectory() << "/"
547 << I->second->getBaseName();
549 if (I != E) std::cout << ", ";
552 } else if (What == "target") {
553 std::cout << Dbg.getRunningProcess().getStatus();
555 // See if this is something handled by the current language.
556 if (getCurrentLanguage().printInfo(What))
559 throw "Unknown info command '" + What + "'. Try 'help info'.";
563 /// parseLineSpec - Parses a line specifier, for use by the 'list' command.
564 /// If SourceFile is returned as a void pointer, then it was not specified.
565 /// If the line specifier is invalid, an exception is thrown.
566 void CLIDebugger::parseLineSpec(std::string &LineSpec,
567 const SourceFile *&SourceFile,
572 // First, check to see if we have a : separator.
573 std::string FirstPart = getToken(LineSpec, ":");
574 std::string SecondPart = getToken(LineSpec, ":");
575 if (!getToken(LineSpec).empty()) throw "Malformed line specification!";
577 // If there is no second part, we must have either "function", "number",
578 // "+offset", or "-offset".
579 if (SecondPart.empty()) {
580 if (FirstPart.empty()) throw "Malformed line specification!";
581 if (FirstPart[0] == '+') {
582 FirstPart.erase(FirstPart.begin(), FirstPart.begin()+1);
583 // For +n, return LineListedEnd+n
584 LineNo = LineListedEnd +
585 getUnsignedIntegerOption("Line specifier '+'", FirstPart);
587 } else if (FirstPart[0] == '-') {
588 FirstPart.erase(FirstPart.begin(), FirstPart.begin()+1);
589 // For -n, return LineListedEnd-n
590 LineNo = LineListedEnd -
591 getUnsignedIntegerOption("Line specifier '-'", FirstPart);
592 if ((int)LineNo < 1) LineNo = 1;
593 } else if (FirstPart[0] == '*') {
594 throw "Address expressions not supported as source locations!";
596 // Ok, check to see if this is just a line number.
597 std::string Saved = FirstPart;
599 LineNo = getUnsignedIntegerOption("", Saved);
601 // Ok, it's not a valid line number. It must be a source-language
603 std::string Name = getToken(FirstPart);
604 if (!getToken(FirstPart).empty())
605 throw "Extra junk in line specifier after '" + Name + "'.";
606 SourceFunctionInfo *SFI =
607 getCurrentLanguage().lookupFunction(Name, getProgramInfo(),
610 throw "Unknown identifier '" + Name + "'.";
613 SFI->getSourceLocation(L, C);
614 if (L == 0) throw "Could not locate '" + Name + "'!";
616 SourceFile = &SFI->getSourceFile().getSourceText();
622 // Ok, this must be a filename qualified line number or function name.
623 // First, figure out the source filename.
624 std::string SourceFilename = getToken(FirstPart);
625 if (!getToken(FirstPart).empty())
626 throw "Invalid filename qualified source location!";
628 // Next, check to see if this is just a line number.
629 std::string Saved = SecondPart;
631 LineNo = getUnsignedIntegerOption("", Saved);
633 // Ok, it's not a valid line number. It must be a function name.
634 throw "FIXME: Filename qualified function names are not support "
635 "as line specifiers yet!";
638 // Ok, we got the line number. Now check out the source file name to make
639 // sure it's all good. If it is, return it. If not, throw exception.
640 SourceFile =&getProgramInfo().getSourceFile(SourceFilename).getSourceText();
644 void CLIDebugger::listCommand(std::string &Options) {
645 if (!Dbg.isProgramLoaded())
646 throw "No program is loaded. Use the 'file' command.";
648 // Handle "list foo," correctly, by returning " " as the second token
651 std::string FirstLineSpec = getToken(Options, ",");
652 std::string SecondLineSpec = getToken(Options, ",");
653 if (!getToken(Options, ",").empty())
654 throw "list command only expects two source location specifiers!";
656 // StartLine, EndLine - The starting and ending line numbers to print.
657 unsigned StartLine = 0, EndLine = 0;
659 if (SecondLineSpec.empty()) { // No second line specifier provided?
660 // Handle special forms like "", "+", "-", etc.
661 std::string TmpSpec = FirstLineSpec;
662 std::string Tok = getToken(TmpSpec);
663 if (getToken(TmpSpec).empty() && (Tok == "" || Tok == "+" || Tok == "-")) {
664 if (Tok == "+" || Tok == "") {
665 StartLine = LineListedEnd;
666 EndLine = StartLine + ListSize;
669 StartLine = LineListedStart-ListSize;
670 EndLine = LineListedStart;
671 if ((int)StartLine <= 0) StartLine = 1;
674 // Must be a normal line specifier.
675 const SourceFile *File;
677 parseLineSpec(FirstLineSpec, File, LineNo);
679 // If the user only specified one file specifier, we should display
680 // ListSize lines centered at the specified line.
681 if (File != 0) CurrentFile = File;
682 StartLine = LineNo - (ListSize+1)/2;
683 if ((int)StartLine <= 0) StartLine = 1;
684 EndLine = StartLine + ListSize;
688 // Parse two line specifiers...
689 const SourceFile *StartFile, *EndFile;
690 unsigned StartLineNo, EndLineNo;
691 parseLineSpec(FirstLineSpec, StartFile, StartLineNo);
692 unsigned SavedLLE = LineListedEnd;
693 LineListedEnd = StartLineNo;
695 parseLineSpec(SecondLineSpec, EndFile, EndLineNo);
697 LineListedEnd = SavedLLE;
701 // Inherit file specified by the first line spec if there was one.
702 if (EndFile == 0) EndFile = StartFile;
704 if (StartFile != EndFile)
705 throw "Start and end line specifiers are in different files!";
706 CurrentFile = StartFile;
707 StartLine = StartLineNo;
708 EndLine = EndLineNo+1;
711 assert((int)StartLine > 0 && (int)EndLine > 0 && StartLine <= EndLine &&
712 "Error reading line specifiers!");
714 // If there was no current file, and the user didn't specify one to list, we
716 if (CurrentFile == 0)
717 throw "There is no current file to list.";
719 // Remember for next time.
720 LineListedStart = StartLine;
721 LineListedEnd = StartLine;
723 for (unsigned LineNo = StartLine; LineNo != EndLine; ++LineNo) {
724 // Print the source line, unless it is invalid.
725 if (printSourceLine(LineNo))
727 LineListedEnd = LineNo+1;
730 // If we didn't print any lines, find out why.
731 if (LineListedEnd == StartLine) {
732 // See if we can read line #0 from the file, if not, we couldn't load the
734 const char *LineStart, *LineEnd;
735 CurrentFile->getSourceLine(0, LineStart, LineEnd);
737 throw "Could not load source file '" + CurrentFile->getFilename() + "'!";
739 std::cout << "<end of file>\n";
743 void CLIDebugger::setCommand(std::string &Options) {
744 std::string What = getToken(Options);
747 throw "set command expects at least two arguments.";
748 if (What == "args") {
749 parseProgramOptions(Options);
750 } else if (What == "language") {
751 std::string Lang = getToken(Options);
752 if (!getToken(Options).empty())
753 throw "set language expects one argument at most.";
755 std::cout << "The currently understood settings are:\n\n"
756 << "local or auto Automatic setting based on source file\n"
757 << "c Use the C language\n"
758 << "c++ Use the C++ language\n"
759 << "unknown Use when source language is not supported\n";
760 } else if (Lang == "local" || Lang == "auto") {
762 } else if (Lang == "c") {
763 CurrentLanguage = &SourceLanguage::getCFamilyInstance();
764 } else if (Lang == "c++") {
765 CurrentLanguage = &SourceLanguage::getCPlusPlusInstance();
766 } else if (Lang == "unknown") {
767 CurrentLanguage = &SourceLanguage::getUnknownLanguageInstance();
769 throw "Unknown language '" + Lang + "'.";
772 } else if (What == "listsize") {
773 ListSize = getUnsignedIntegerOption("'set prompt' command", Options);
774 } else if (What == "prompt") {
775 // Include any trailing whitespace or other tokens, but not leading
777 Prompt = getToken(Options); // Strip leading whitespace
778 Prompt += Options; // Keep trailing whitespace or other stuff
780 // FIXME: Try to parse this as a source-language program expression.
781 throw "Don't know how to set '" + What + "'!";
785 void CLIDebugger::showCommand(std::string &Options) {
786 std::string What = getToken(Options);
788 if (What.empty() || !getToken(Options).empty())
789 throw "show command expects one argument.";
791 if (What == "args") {
792 std::cout << "Argument list to give program when started is \"";
793 // FIXME: This doesn't print stuff correctly if the arguments have spaces in
794 // them, but currently the only way to get that is to use the --args command
795 // line argument. This should really handle escaping all hard characters as
797 for (unsigned i = 0, e = Dbg.getNumProgramArguments(); i != e; ++i)
798 std::cout << (i ? " " : "") << Dbg.getProgramArgument(i);
801 } else if (What == "language") {
802 std::cout << "The current source language is '";
804 std::cout << CurrentLanguage->getSourceLanguageName();
806 std::cout << "auto; currently "
807 << getCurrentLanguage().getSourceLanguageName();
809 } else if (What == "listsize") {
810 std::cout << "Number of source lines llvm-db will list by default is "
811 << ListSize << ".\n";
812 } else if (What == "prompt") {
813 std::cout << "llvm-db's prompt is \"" << Prompt << "\".\n";
815 throw "Unknown show command '" + What + "'. Try 'help show'.";
819 void CLIDebugger::helpCommand(std::string &Options) {
820 // Print out all of the commands in the CommandTable
821 std::string Command = getToken(Options);
822 if (!getToken(Options).empty())
823 throw "help command takes at most one argument.";
825 // Getting detailed help on a particular command?
826 if (!Command.empty()) {
827 CLICommand *C = getCommand(Command);
828 std::cout << C->getShortHelp() << ".\n" << C->getLongHelp();
830 // If there are aliases for this option, print them out.
831 const std::vector<std::string> &Names = C->getOptionNames();
832 if (Names.size() > 1) {
833 std::cout << "The '" << Command << "' command is known as: '"
835 for (unsigned i = 1, e = Names.size(); i != e; ++i)
836 std::cout << ", '" << Names[i] << "'";
841 unsigned MaxSize = 0;
842 for (std::map<std::string, CLICommand*>::iterator I = CommandTable.begin(),
843 E = CommandTable.end(); I != E; ++I)
844 if (I->first.size() > MaxSize &&
845 I->first == I->second->getPrimaryOptionName())
846 MaxSize = I->first.size();
848 // Loop over all of the commands, printing the short help version
849 for (std::map<std::string, CLICommand*>::iterator I = CommandTable.begin(),
850 E = CommandTable.end(); I != E; ++I)
851 if (I->first == I->second->getPrimaryOptionName())
852 std::cout << I->first << std::string(MaxSize - I->first.size(), ' ')
853 << " - " << I->second->getShortHelp() << "\n";