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 "llvm/Support/FileUtilities.h"
22 #include "llvm/ADT/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;
126 if (printSourceLine(LineNo))
127 std::cout << "<could not load source file>\n";
129 LineListedStart = LineNo-ListSize/2+1;
130 if ((int)LineListedStart < 1) LineListedStart = 1;
131 LineListedEnd = LineListedStart+1;
135 /// eliminateRunInfo - We are about to run the program. Forget any state
136 /// about how the program used to be stopped.
137 void CLIDebugger::eliminateRunInfo() {
138 delete TheRuntimeInfo;
142 /// programStoppedSuccessfully - This method updates internal data
143 /// structures to reflect the fact that the program just executed a while,
144 /// and has successfully stopped.
145 void CLIDebugger::programStoppedSuccessfully() {
146 assert(TheRuntimeInfo==0 && "Someone forgot to release the old RuntimeInfo!");
148 TheRuntimeInfo = new RuntimeInfo(TheProgramInfo, Dbg.getRunningProcess());
150 // FIXME: if there are any breakpoints at the current location, print them as
153 // Since the program as successfully stopped, print its location.
154 void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
155 printProgramLocation(CurrentFrame != LastCurrentFrame);
156 LastCurrentFrame = CurrentFrame;
161 /// getUnsignedIntegerOption - Get an unsigned integer number from the Val
162 /// string. Check to make sure that the string contains an unsigned integer
163 /// token, and if not, throw an exception. If isOnlyOption is set, also throw
164 /// an exception if there is extra junk at the end of the string.
165 static unsigned getUnsignedIntegerOption(const char *Msg, std::string &Val,
166 bool isOnlyOption = true) {
167 std::string Tok = getToken(Val);
168 if (Tok.empty() || (isOnlyOption && !getToken(Val).empty()))
169 throw std::string(Msg) + " expects an unsigned integer argument.";
172 unsigned Result = strtoul(Tok.c_str(), &EndPtr, 0);
173 if (EndPtr != Tok.c_str()+Tok.size())
174 throw std::string(Msg) + " expects an unsigned integer argument.";
179 /// getOptionalUnsignedIntegerOption - This method is just like
180 /// getUnsignedIntegerOption, but if the argument value is not specified, a
181 /// default is returned instead of causing an error.
183 getOptionalUnsignedIntegerOption(const char *Msg, unsigned Default,
184 std::string &Val, bool isOnlyOption = true) {
185 // Check to see if the value was specified...
186 std::string TokVal = getToken(Val);
187 if (TokVal.empty()) return Default;
189 // If it was specified, add it back to the value we are parsing...
192 // And parse normally.
193 return getUnsignedIntegerOption(Msg, Val, isOnlyOption);
197 /// parseProgramOptions - This method parses the Options string and loads it
198 /// as options to be passed to the program. This is used by the run command
199 /// and by 'set args'.
200 void CLIDebugger::parseProgramOptions(std::string &Options) {
201 // FIXME: tokenizing by whitespace is clearly incorrect. Instead we should
202 // honor quotes and other things that a shell would. Also in the future we
203 // should support redirection of standard IO.
205 std::vector<std::string> Arguments;
206 for (std::string A = getToken(Options); !A.empty(); A = getToken(Options))
207 Arguments.push_back(A);
208 Dbg.setProgramArguments(Arguments.begin(), Arguments.end());
212 //===----------------------------------------------------------------------===//
213 // Program startup and shutdown options
214 //===----------------------------------------------------------------------===//
217 /// file command - If the user specifies an option, search the PATH for the
218 /// specified program/bytecode file and load it. If the user does not specify
219 /// an option, unload the current program.
220 void CLIDebugger::fileCommand(std::string &Options) {
221 std::string Prog = getToken(Options);
222 if (!getToken(Options).empty())
223 throw "file command takes at most one argument.";
225 // Check to make sure the user knows what they are doing
226 if (Dbg.isProgramRunning() &&
227 !askYesNo("A program is already loaded. Kill it?"))
230 // Unload an existing program. This kills the program if necessary.
232 delete TheProgramInfo;
237 // If requested, start the new program.
239 std::cout << "Unloaded program.\n";
241 std::cout << "Loading program... " << std::flush;
242 Dbg.loadProgram(Prog);
243 assert(Dbg.isProgramLoaded() &&
244 "loadProgram succeeded, but not program loaded!");
245 TheProgramInfo = new ProgramInfo(Dbg.getProgram());
246 std::cout << "successfully loaded '" << Dbg.getProgramPath() << "'!\n";
251 void CLIDebugger::createCommand(std::string &Options) {
252 if (!getToken(Options).empty())
253 throw "create command does not take any arguments.";
254 if (!Dbg.isProgramLoaded()) throw "No program loaded.";
255 if (Dbg.isProgramRunning() &&
256 !askYesNo("The program is already running. Restart from the beginning?"))
259 // Start the program running.
260 startProgramRunning();
262 // The program stopped!
263 programStoppedSuccessfully();
266 void CLIDebugger::killCommand(std::string &Options) {
267 if (!getToken(Options).empty())
268 throw "kill command does not take any arguments.";
269 if (!Dbg.isProgramRunning())
270 throw "No program is currently being run.";
272 if (askYesNo("Kill the program being debugged?"))
277 void CLIDebugger::quitCommand(std::string &Options) {
278 if (!getToken(Options).empty())
279 throw "quit command does not take any arguments.";
281 if (Dbg.isProgramRunning() &&
282 !askYesNo("The program is running. Exit anyway?"))
285 // Throw exception to get out of the user-input loop.
290 //===----------------------------------------------------------------------===//
291 // Program execution commands
292 //===----------------------------------------------------------------------===//
294 void CLIDebugger::runCommand(std::string &Options) {
295 if (!Dbg.isProgramLoaded()) throw "No program loaded.";
296 if (Dbg.isProgramRunning() &&
297 !askYesNo("The program is already running. Restart from the beginning?"))
300 // Parse all of the options to the run command, which specify program
301 // arguments to run with.
302 parseProgramOptions(Options);
306 // Start the program running.
307 startProgramRunning();
309 // Start the program running...
311 contCommand(Options);
314 void CLIDebugger::contCommand(std::string &Options) {
315 if (!getToken(Options).empty()) throw "cont argument not supported yet.";
316 if (!Dbg.isProgramRunning()) throw "Program is not running.";
322 // The program stopped!
323 programStoppedSuccessfully();
326 void CLIDebugger::stepCommand(std::string &Options) {
327 if (!Dbg.isProgramRunning()) throw "Program is not running.";
329 // Figure out how many times to step.
331 getOptionalUnsignedIntegerOption("'step' command", 1, Options);
335 // Step the specified number of times.
336 for (; Amount; --Amount)
339 // The program stopped!
340 programStoppedSuccessfully();
343 void CLIDebugger::nextCommand(std::string &Options) {
344 if (!Dbg.isProgramRunning()) throw "Program is not running.";
346 getOptionalUnsignedIntegerOption("'next' command", 1, Options);
350 for (; Amount; --Amount)
353 // The program stopped!
354 programStoppedSuccessfully();
357 void CLIDebugger::finishCommand(std::string &Options) {
358 if (!getToken(Options).empty())
359 throw "finish command does not take any arguments.";
360 if (!Dbg.isProgramRunning()) throw "Program is not running.";
362 // Figure out where we are exactly. If the user requests that we return from
363 // a frame that is not the top frame, make sure we get it.
364 void *CurrentFrame = getRuntimeInfo().getCurrentFrame().getFrameID();
368 Dbg.finishProgram(CurrentFrame);
370 // The program stopped!
371 programStoppedSuccessfully();
374 //===----------------------------------------------------------------------===//
375 // Stack frame commands
376 //===----------------------------------------------------------------------===//
378 void CLIDebugger::backtraceCommand(std::string &Options) {
379 // Accepts "full", n, -n
380 if (!getToken(Options).empty())
381 throw "FIXME: bt command argument not implemented yet!";
383 RuntimeInfo &RI = getRuntimeInfo();
384 ProgramInfo &PI = getProgramInfo();
387 for (unsigned i = 0; ; ++i) {
388 StackFrame &SF = RI.getStackFrame(i);
389 std::cout << "#" << i;
390 if (i == RI.getCurrentFrameIdx())
392 std::cout << "\t" << SF.getFrameID() << " in ";
393 if (const GlobalVariable *G = SF.getFunctionDesc())
394 std::cout << PI.getFunction(G).getSymbolicName();
396 unsigned LineNo, ColNo;
397 const SourceFileInfo *SFI;
398 SF.getSourceLocation(LineNo, ColNo, SFI);
399 if (!SFI->getBaseName().empty()) {
400 std::cout << " at " << SFI->getBaseName();
402 std::cout << ":" << LineNo;
404 std::cout << ":" << ColNo;
408 // FIXME: when we support shared libraries, we should print ' from foo.so'
409 // if the stack frame is from a different object than the current one.
414 // Stop automatically when we run off the bottom of the stack.
418 void CLIDebugger::upCommand(std::string &Options) {
420 getOptionalUnsignedIntegerOption("'up' command", 1, Options);
422 RuntimeInfo &RI = getRuntimeInfo();
423 unsigned CurFrame = RI.getCurrentFrameIdx();
425 // Check to see if we go can up the specified number of frames.
427 RI.getStackFrame(CurFrame+Num);
430 throw "Initial frame selected; you cannot go up.";
432 throw "Cannot go up " + utostr(Num) + " frames!";
435 RI.setCurrentFrameIdx(CurFrame+Num);
436 printProgramLocation();
439 void CLIDebugger::downCommand(std::string &Options) {
441 getOptionalUnsignedIntegerOption("'down' command", 1, Options);
443 RuntimeInfo &RI = getRuntimeInfo();
444 unsigned CurFrame = RI.getCurrentFrameIdx();
446 // Check to see if we can go up the specified number of frames.
449 throw "Bottom (i.e., innermost) frame selected; you cannot go down.";
451 throw "Cannot go down " + utostr(Num) + " frames!";
453 RI.setCurrentFrameIdx(CurFrame-Num);
454 printProgramLocation();
457 void CLIDebugger::frameCommand(std::string &Options) {
458 RuntimeInfo &RI = getRuntimeInfo();
459 unsigned CurFrame = RI.getCurrentFrameIdx();
462 getOptionalUnsignedIntegerOption("'frame' command", CurFrame, Options);
464 // Check to see if we go to the specified frame.
465 RI.getStackFrame(Num);
467 RI.setCurrentFrameIdx(Num);
468 printProgramLocation();
472 //===----------------------------------------------------------------------===//
473 // Breakpoint related commands
474 //===----------------------------------------------------------------------===//
476 void CLIDebugger::breakCommand(std::string &Options) {
477 // Figure out where the user wants a breakpoint.
478 const SourceFile *File;
481 // Check to see if the user specified a line specifier.
482 std::string Option = getToken(Options); // strip whitespace
483 if (!Option.empty()) {
484 Options = Option + Options; // reconstruct string
486 // Parse the line specifier.
487 parseLineSpec(Options, File, LineNo);
489 // Build a line specifier for the current stack frame.
490 throw "FIXME: breaking at the current location is not implemented yet!";
493 if (!File) File = CurrentFile;
495 throw "Unknown file to place breakpoint!";
497 std::cerr << "Break: " << File->getFilename() << ":" << LineNo << "\n";
499 throw "breakpoints not implemented yet!";
502 //===----------------------------------------------------------------------===//
503 // Miscellaneous commands
504 //===----------------------------------------------------------------------===//
506 void CLIDebugger::infoCommand(std::string &Options) {
507 std::string What = getToken(Options);
509 if (What.empty() || !getToken(Options).empty()){
510 std::string infoStr("info");
511 helpCommand(infoStr);
515 if (What == "frame") {
516 } else if (What == "functions") {
517 const std::map<const GlobalVariable*, SourceFunctionInfo*> &Functions
518 = getProgramInfo().getSourceFunctions();
519 std::cout << "All defined functions:\n";
520 // FIXME: GDB groups these by source file. We could do that I guess.
521 for (std::map<const GlobalVariable*, SourceFunctionInfo*>::const_iterator
522 I = Functions.begin(), E = Functions.end(); I != E; ++I) {
523 std::cout << I->second->getSymbolicName() << "\n";
526 } else if (What == "source") {
527 if (CurrentFile == 0)
528 throw "No current source file.";
530 // Get the SourceFile information for the current file.
531 const SourceFileInfo &SF =
532 getProgramInfo().getSourceFile(CurrentFile->getDescriptor());
534 std::cout << "Current source file is: " << SF.getBaseName() << "\n"
535 << "Compilation directory is: " << SF.getDirectory() << "\n";
536 if (unsigned NL = CurrentFile->getNumLines())
537 std::cout << "Located in: " << CurrentFile->getFilename() << "\n"
538 << "Contains " << NL << " lines\n";
540 std::cout << "Could not find source file.\n";
541 std::cout << "Source language is "
542 << SF.getLanguage().getSourceLanguageName() << "\n";
544 } else if (What == "sources") {
545 const std::map<const GlobalVariable*, SourceFileInfo*> &SourceFiles =
546 getProgramInfo().getSourceFiles();
547 std::cout << "Source files for the program:\n";
548 for (std::map<const GlobalVariable*, SourceFileInfo*>::const_iterator I =
549 SourceFiles.begin(), E = SourceFiles.end(); I != E;) {
550 std::cout << I->second->getDirectory() << "/"
551 << I->second->getBaseName();
553 if (I != E) std::cout << ", ";
556 } else if (What == "target") {
557 std::cout << Dbg.getRunningProcess().getStatus();
559 // See if this is something handled by the current language.
560 if (getCurrentLanguage().printInfo(What))
563 throw "Unknown info command '" + What + "'. Try 'help info'.";
567 /// parseLineSpec - Parses a line specifier, for use by the 'list' command.
568 /// If SourceFile is returned as a void pointer, then it was not specified.
569 /// If the line specifier is invalid, an exception is thrown.
570 void CLIDebugger::parseLineSpec(std::string &LineSpec,
571 const SourceFile *&SourceFile,
576 // First, check to see if we have a : separator.
577 std::string FirstPart = getToken(LineSpec, ":");
578 std::string SecondPart = getToken(LineSpec, ":");
579 if (!getToken(LineSpec).empty()) throw "Malformed line specification!";
581 // If there is no second part, we must have either "function", "number",
582 // "+offset", or "-offset".
583 if (SecondPart.empty()) {
584 if (FirstPart.empty()) throw "Malformed line specification!";
585 if (FirstPart[0] == '+') {
586 FirstPart.erase(FirstPart.begin(), FirstPart.begin()+1);
587 // For +n, return LineListedEnd+n
588 LineNo = LineListedEnd +
589 getUnsignedIntegerOption("Line specifier '+'", FirstPart);
591 } else if (FirstPart[0] == '-') {
592 FirstPart.erase(FirstPart.begin(), FirstPart.begin()+1);
593 // For -n, return LineListedEnd-n
594 LineNo = LineListedEnd -
595 getUnsignedIntegerOption("Line specifier '-'", FirstPart);
596 if ((int)LineNo < 1) LineNo = 1;
597 } else if (FirstPart[0] == '*') {
598 throw "Address expressions not supported as source locations!";
600 // Ok, check to see if this is just a line number.
601 std::string Saved = FirstPart;
603 LineNo = getUnsignedIntegerOption("", Saved);
605 // Ok, it's not a valid line number. It must be a source-language
607 std::string Name = getToken(FirstPart);
608 if (!getToken(FirstPart).empty())
609 throw "Extra junk in line specifier after '" + Name + "'.";
610 SourceFunctionInfo *SFI =
611 getCurrentLanguage().lookupFunction(Name, getProgramInfo(),
614 throw "Unknown identifier '" + Name + "'.";
617 SFI->getSourceLocation(L, C);
618 if (L == 0) throw "Could not locate '" + Name + "'!";
620 SourceFile = &SFI->getSourceFile().getSourceText();
626 // Ok, this must be a filename qualified line number or function name.
627 // First, figure out the source filename.
628 std::string SourceFilename = getToken(FirstPart);
629 if (!getToken(FirstPart).empty())
630 throw "Invalid filename qualified source location!";
632 // Next, check to see if this is just a line number.
633 std::string Saved = SecondPart;
635 LineNo = getUnsignedIntegerOption("", Saved);
637 // Ok, it's not a valid line number. It must be a function name.
638 throw "FIXME: Filename qualified function names are not support "
639 "as line specifiers yet!";
642 // Ok, we got the line number. Now check out the source file name to make
643 // sure it's all good. If it is, return it. If not, throw exception.
644 SourceFile =&getProgramInfo().getSourceFile(SourceFilename).getSourceText();
648 void CLIDebugger::listCommand(std::string &Options) {
649 if (!Dbg.isProgramLoaded())
650 throw "No program is loaded. Use the 'file' command.";
652 // Handle "list foo," correctly, by returning " " as the second token
655 std::string FirstLineSpec = getToken(Options, ",");
656 std::string SecondLineSpec = getToken(Options, ",");
657 if (!getToken(Options, ",").empty())
658 throw "list command only expects two source location specifiers!";
660 // StartLine, EndLine - The starting and ending line numbers to print.
661 unsigned StartLine = 0, EndLine = 0;
663 if (SecondLineSpec.empty()) { // No second line specifier provided?
664 // Handle special forms like "", "+", "-", etc.
665 std::string TmpSpec = FirstLineSpec;
666 std::string Tok = getToken(TmpSpec);
667 if (getToken(TmpSpec).empty() && (Tok == "" || Tok == "+" || Tok == "-")) {
668 if (Tok == "+" || Tok == "") {
669 StartLine = LineListedEnd;
670 EndLine = StartLine + ListSize;
673 StartLine = LineListedStart-ListSize;
674 EndLine = LineListedStart;
675 if ((int)StartLine <= 0) StartLine = 1;
678 // Must be a normal line specifier.
679 const SourceFile *File;
681 parseLineSpec(FirstLineSpec, File, LineNo);
683 // If the user only specified one file specifier, we should display
684 // ListSize lines centered at the specified line.
685 if (File != 0) CurrentFile = File;
686 StartLine = LineNo - (ListSize+1)/2;
687 if ((int)StartLine <= 0) StartLine = 1;
688 EndLine = StartLine + ListSize;
692 // Parse two line specifiers...
693 const SourceFile *StartFile, *EndFile;
694 unsigned StartLineNo, EndLineNo;
695 parseLineSpec(FirstLineSpec, StartFile, StartLineNo);
696 unsigned SavedLLE = LineListedEnd;
697 LineListedEnd = StartLineNo;
699 parseLineSpec(SecondLineSpec, EndFile, EndLineNo);
701 LineListedEnd = SavedLLE;
705 // Inherit file specified by the first line spec if there was one.
706 if (EndFile == 0) EndFile = StartFile;
708 if (StartFile != EndFile)
709 throw "Start and end line specifiers are in different files!";
710 CurrentFile = StartFile;
711 StartLine = StartLineNo;
712 EndLine = EndLineNo+1;
715 assert((int)StartLine > 0 && (int)EndLine > 0 && StartLine <= EndLine &&
716 "Error reading line specifiers!");
718 // If there was no current file, and the user didn't specify one to list, we
720 if (CurrentFile == 0)
721 throw "There is no current file to list.";
723 // Remember for next time.
724 LineListedStart = StartLine;
725 LineListedEnd = StartLine;
727 for (unsigned LineNo = StartLine; LineNo != EndLine; ++LineNo) {
728 // Print the source line, unless it is invalid.
729 if (printSourceLine(LineNo))
731 LineListedEnd = LineNo+1;
734 // If we didn't print any lines, find out why.
735 if (LineListedEnd == StartLine) {
736 // See if we can read line #0 from the file, if not, we couldn't load the
738 const char *LineStart, *LineEnd;
739 CurrentFile->getSourceLine(0, LineStart, LineEnd);
741 throw "Could not load source file '" + CurrentFile->getFilename() + "'!";
743 std::cout << "<end of file>\n";
747 void CLIDebugger::setCommand(std::string &Options) {
748 std::string What = getToken(Options);
751 throw "set command expects at least two arguments.";
752 if (What == "args") {
753 parseProgramOptions(Options);
754 } else if (What == "language") {
755 std::string Lang = getToken(Options);
756 if (!getToken(Options).empty())
757 throw "set language expects one argument at most.";
759 std::cout << "The currently understood settings are:\n\n"
760 << "local or auto Automatic setting based on source file\n"
761 << "c Use the C language\n"
762 << "c++ Use the C++ language\n"
763 << "unknown Use when source language is not supported\n";
764 } else if (Lang == "local" || Lang == "auto") {
766 } else if (Lang == "c") {
767 CurrentLanguage = &SourceLanguage::getCFamilyInstance();
768 } else if (Lang == "c++") {
769 CurrentLanguage = &SourceLanguage::getCPlusPlusInstance();
770 } else if (Lang == "unknown") {
771 CurrentLanguage = &SourceLanguage::getUnknownLanguageInstance();
773 throw "Unknown language '" + Lang + "'.";
776 } else if (What == "listsize") {
777 ListSize = getUnsignedIntegerOption("'set prompt' command", Options);
778 } else if (What == "prompt") {
779 // Include any trailing whitespace or other tokens, but not leading
781 Prompt = getToken(Options); // Strip leading whitespace
782 Prompt += Options; // Keep trailing whitespace or other stuff
784 // FIXME: Try to parse this as a source-language program expression.
785 throw "Don't know how to set '" + What + "'!";
789 void CLIDebugger::showCommand(std::string &Options) {
790 std::string What = getToken(Options);
792 if (What.empty() || !getToken(Options).empty())
793 throw "show command expects one argument.";
795 if (What == "args") {
796 std::cout << "Argument list to give program when started is \"";
797 // FIXME: This doesn't print stuff correctly if the arguments have spaces in
798 // them, but currently the only way to get that is to use the --args command
799 // line argument. This should really handle escaping all hard characters as
801 for (unsigned i = 0, e = Dbg.getNumProgramArguments(); i != e; ++i)
802 std::cout << (i ? " " : "") << Dbg.getProgramArgument(i);
805 } else if (What == "language") {
806 std::cout << "The current source language is '";
808 std::cout << CurrentLanguage->getSourceLanguageName();
810 std::cout << "auto; currently "
811 << getCurrentLanguage().getSourceLanguageName();
813 } else if (What == "listsize") {
814 std::cout << "Number of source lines llvm-db will list by default is "
815 << ListSize << ".\n";
816 } else if (What == "prompt") {
817 std::cout << "llvm-db's prompt is \"" << Prompt << "\".\n";
819 throw "Unknown show command '" + What + "'. Try 'help show'.";
823 void CLIDebugger::helpCommand(std::string &Options) {
824 // Print out all of the commands in the CommandTable
825 std::string Command = getToken(Options);
826 if (!getToken(Options).empty())
827 throw "help command takes at most one argument.";
829 // Getting detailed help on a particular command?
830 if (!Command.empty()) {
831 CLICommand *C = getCommand(Command);
832 std::cout << C->getShortHelp() << ".\n" << C->getLongHelp();
834 // If there are aliases for this option, print them out.
835 const std::vector<std::string> &Names = C->getOptionNames();
836 if (Names.size() > 1) {
837 std::cout << "The '" << Command << "' command is known as: '"
839 for (unsigned i = 1, e = Names.size(); i != e; ++i)
840 std::cout << ", '" << Names[i] << "'";
845 unsigned MaxSize = 0;
846 for (std::map<std::string, CLICommand*>::iterator I = CommandTable.begin(),
847 E = CommandTable.end(); I != E; ++I)
848 if (I->first.size() > MaxSize &&
849 I->first == I->second->getPrimaryOptionName())
850 MaxSize = I->first.size();
852 // Loop over all of the commands, printing the short help version
853 for (std::map<std::string, CLICommand*>::iterator I = CommandTable.begin(),
854 E = CommandTable.end(); I != E; ++I)
855 if (I->first == I->second->getPrimaryOptionName())
856 std::cout << I->first << std::string(MaxSize - I->first.size(), ' ')
857 << " - " << I->second->getShortHelp() << "\n";