src/options/options_template.cpp

   1 /*********************                                                        */
   2 /*! \file options.cpp
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Tim King, Morgan Deters, Kshitij Bansal
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2017 by the authors listed in the file AUTHORS
   8  ** in the top-level source directory) and their institutional affiliations.
   9  ** All rights reserved.  See the file COPYING in the top-level source
  10  ** directory for licensing information.\endverbatim
  11  **
  12  ** \brief Contains code for handling command-line options.
  13  **
  14  ** Contains code for handling command-line options
  15  **/
  16
  17 #if !defined(_BSD_SOURCE) && defined(__MINGW32__) && !defined(__MINGW64__)
  18 // force use of optreset; mingw32 croaks on argv-switching otherwise
  19 #  include "cvc4autoconfig.h"
  20 #  define _BSD_SOURCE
  21 #  undef HAVE_DECL_OPTRESET
  22 #  define HAVE_DECL_OPTRESET 1
  23 #  define CVC4_IS_NOT_REALLY_BSD
  24 #endif /* !_BSD_SOURCE && __MINGW32__ && !__MINGW64__ */
  25
  26 #ifdef __MINGW64__
  27 extern int optreset;
  28 #endif /* __MINGW64__ */
  29
  30 #include <getopt.h>
  31
  32 // clean up
  33 #ifdef CVC4_IS_NOT_REALLY_BSD
  34 #  undef _BSD_SOURCE
  35 #endif /* CVC4_IS_NOT_REALLY_BSD */
  36
  37 #include <unistd.h>
  38 #include <string.h>
  39 #include <stdint.h>
  40 #include <time.h>
  41
  42 #include <cstdio>
  43 #include <cstdlib>
  44 #include <cstring>
  45 #include <iomanip>
  46 #include <new>
  47 #include <string>
  48 #include <sstream>
  49 #include <limits>
  50
  51 #include "base/tls.h"
  52 #include "base/cvc4_assert.h"
  53 #include "base/exception.h"
  54 #include "base/output.h"
  55 #include "options/argument_extender.h"
  56 #include "options/argument_extender_implementation.h"
  57 #include "options/didyoumean.h"
  58 #include "options/language.h"
  59 #include "options/options_handler.h"
  60
  61 ${headers_module}$
  62
  63
  64 #include "options/options_holder.h"
  65 #include "cvc4autoconfig.h"
  66 #include "options/base_handlers.h"
  67
  68 ${headers_handler}$
  69
  70
  71 using namespace CVC4;
  72 using namespace CVC4::options;
  73
  74 namespace CVC4 {
  75
  76 CVC4_THREAD_LOCAL Options* Options::s_current = NULL;
  77
  78
  79
  80 /**
  81  * This is a default handler for options of built-in C++ type.  This
  82  * template is really just a helper for the handleOption() template,
  83  * below.  Variants of this template handle numeric and non-numeric,
  84  * integral and non-integral, signed and unsigned C++ types.
  85  * handleOption() makes sure to instantiate the right one.
  86  *
  87  * This implements default behavior when e.g. an option is
  88  * unsigned but the user specifies a negative argument; etc.
  89  */
  90 template <class T, bool is_numeric, bool is_integer>
  91 struct OptionHandler {
  92   static T handle(std::string option, std::string optionarg);
  93 };/* struct OptionHandler<> */
  94
  95 /** Variant for integral C++ types */
  96 template <class T>
  97 struct OptionHandler<T, true, true> {
  98   static bool stringToInt(T& t, const std::string& str) {
  99     std::istringstream ss(str);
 100     ss >> t;
 101     char tmp;
 102     return !(ss.fail() || ss.get(tmp));
 103   }
 104
 105   static bool containsMinus(const std::string& str) {
 106     return str.find('-') != std::string::npos;
 107   }
 108
 109   static T handle(const std::string& option, const std::string& optionarg) {
 110     try {
 111       T i;
 112       bool success = stringToInt(i, optionarg);
 113
 114       if(!success){
 115         throw OptionException(option + ": failed to parse "+ optionarg +
 116                               " as an integer of the appropraite type.");
 117       }
 118
 119       // Depending in the platform unsigned numbers with '-' signs may parse.
 120       // Reject these by looking for any minus if it is not signed.
 121       if( (! std::numeric_limits<T>::is_signed) && containsMinus(optionarg) ) {
 122         // unsigned type but user gave negative argument
 123         throw OptionException(option + " requires a nonnegative argument");
 124       } else if(i < std::numeric_limits<T>::min()) {
 125         // negative overflow for type
 126         std::stringstream ss;
 127         ss << option << " requires an argument >= "
 128            << std::numeric_limits<T>::min();
 129         throw OptionException(ss.str());
 130       } else if(i > std::numeric_limits<T>::max()) {
 131         // positive overflow for type
 132         std::stringstream ss;
 133         ss << option << " requires an argument <= "
 134            << std::numeric_limits<T>::max();
 135         throw OptionException(ss.str());
 136       }
 137
 138       return i;
 139
 140       // if(std::numeric_limits<T>::is_signed) {
 141       //   return T(i.getLong());
 142       // } else {
 143       //   return T(i.getUnsignedLong());
 144       // }
 145     } catch(std::invalid_argument&) {
 146       // user gave something other than an integer
 147       throw OptionException(option + " requires an integer argument");
 148     }
 149   }
 150 };/* struct OptionHandler<T, true, true> */
 151
 152 /** Variant for numeric but non-integral C++ types */
 153 template <class T>
 154 struct OptionHandler<T, true, false> {
 155   static T handle(std::string option, std::string optionarg) {
 156     std::stringstream in(optionarg);
 157     long double r;
 158     in >> r;
 159     if(! in.eof()) {
 160       // we didn't consume the whole string (junk at end)
 161       throw OptionException(option + " requires a numeric argument");
 162     }
 163
 164     if(! std::numeric_limits<T>::is_signed && r < 0.0) {
 165       // unsigned type but user gave negative value
 166       throw OptionException(option + " requires a nonnegative argument");
 167     } else if(r < -std::numeric_limits<T>::max()) {
 168       // negative overflow for type
 169       std::stringstream ss;
 170       ss << option << " requires an argument >= "
 171          << -std::numeric_limits<T>::max();
 172       throw OptionException(ss.str());
 173     } else if(r > std::numeric_limits<T>::max()) {
 174       // positive overflow for type
 175       std::stringstream ss;
 176       ss << option << " requires an argument <= "
 177          << std::numeric_limits<T>::max();
 178       throw OptionException(ss.str());
 179     }
 180
 181     return T(r);
 182   }
 183 };/* struct OptionHandler<T, true, false> */
 184
 185 /** Variant for non-numeric C++ types */
 186 template <class T>
 187 struct OptionHandler<T, false, false> {
 188   static T handle(std::string option, std::string optionarg) {
 189     T::unsupported_handleOption_call___please_write_me;
 190     // The above line causes a compiler error if this version of the template
 191     // is ever instantiated (meaning that a specialization is missing).  So
 192     // don't worry about the segfault in the next line, the "return" is only
 193     // there to keep the compiler from giving additional, distracting errors
 194     // and warnings.
 195     return *(T*)0;
 196   }
 197 };/* struct OptionHandler<T, false, false> */
 198
 199 /** Handle an option of type T in the default way. */
 200 template <class T>
 201 T handleOption(std::string option, std::string optionarg) {
 202   return OptionHandler<T, std::numeric_limits<T>::is_specialized, std::numeric_limits<T>::is_integer>::handle(option, optionarg);
 203 }
 204
 205 /** Handle an option of type std::string in the default way. */
 206 template <>
 207 std::string handleOption<std::string>(std::string option, std::string optionarg) {
 208   return optionarg;
 209 }
 210
 211 /**
 212  * Run handler, and any user-given predicates, for option T.
 213  * If a user specifies a :handler or :predicates, it overrides this.
 214  */
 215 template <class T>
 216 typename T::type runHandlerAndPredicates(T, std::string option, std::string optionarg, options::OptionsHandler* handler) {
 217   // By default, parse the option argument in a way appropriate for its type.
 218   // E.g., for "unsigned int" options, ensure that the provided argument is
 219   // a nonnegative integer that fits in the unsigned int type.
 220
 221   return handleOption<typename T::type>(option, optionarg);
 222 }
 223
 224 template <class T>
 225 void runBoolPredicates(T, std::string option, bool b, options::OptionsHandler* handler) {
 226   // By default, nothing to do for bool.  Users add things with
 227   // :predicate in options files to provide custom checking routines
 228   // that can throw exceptions.
 229 }
 230
 231
 232 Options::Options()
 233     : d_holder(new options::OptionsHolder())
 234     , d_handler(new options::OptionsHandler(this))
 235     , d_forceLogicListeners()
 236     , d_beforeSearchListeners()
 237     , d_tlimitListeners()
 238     , d_tlimitPerListeners()
 239     , d_rlimitListeners()
 240     , d_rlimitPerListeners()
 241 {}
 242
 243 Options::~Options() {
 244   delete d_handler;
 245   delete d_holder;
 246 }
 247
 248 void Options::copyValues(const Options& options){
 249   if(this != &options) {
 250     delete d_holder;
 251     d_holder = new options::OptionsHolder(*options.d_holder);
 252   }
 253 }
 254
 255 std::string Options::formatThreadOptionException(const std::string& option) {
 256   std::stringstream ss;
 257   ss << "can't understand option `" << option
 258      << "': expected something like --threadN=\"--option1 --option2\","
 259      << " where N is a nonnegative integer";
 260   return ss.str();
 261 }
 262
 263 ListenerCollection::Registration* Options::registerAndNotify(
 264     ListenerCollection& collection, Listener* listener, bool notify)
 265 {
 266   ListenerCollection::Registration* registration =
 267       collection.registerListener(listener);
 268   if(notify) {
 269     listener->notify();
 270   }
 271   return registration;
 272 }
 273
 274 ListenerCollection::Registration* Options::registerForceLogicListener(
 275     Listener* listener, bool notifyIfSet)
 276 {
 277   bool notify = notifyIfSet && wasSetByUser(options::forceLogicString);
 278   return registerAndNotify(d_forceLogicListeners, listener, notify);
 279 }
 280
 281 ListenerCollection::Registration* Options::registerBeforeSearchListener(
 282    Listener* listener)
 283 {
 284   return d_beforeSearchListeners.registerListener(listener);
 285 }
 286
 287 ListenerCollection::Registration* Options::registerTlimitListener(
 288    Listener* listener, bool notifyIfSet)
 289 {
 290   bool notify = notifyIfSet &&
 291       wasSetByUser(options::cumulativeMillisecondLimit);
 292   return registerAndNotify(d_tlimitListeners, listener, notify);
 293 }
 294
 295 ListenerCollection::Registration* Options::registerTlimitPerListener(
 296    Listener* listener, bool notifyIfSet)
 297 {
 298   bool notify = notifyIfSet && wasSetByUser(options::perCallMillisecondLimit);
 299   return registerAndNotify(d_tlimitPerListeners, listener, notify);
 300 }
 301
 302 ListenerCollection::Registration* Options::registerRlimitListener(
 303    Listener* listener, bool notifyIfSet)
 304 {
 305   bool notify = notifyIfSet && wasSetByUser(options::cumulativeResourceLimit);
 306   return registerAndNotify(d_rlimitListeners, listener, notify);
 307 }
 308
 309 ListenerCollection::Registration* Options::registerRlimitPerListener(
 310    Listener* listener, bool notifyIfSet)
 311 {
 312   bool notify = notifyIfSet && wasSetByUser(options::perCallResourceLimit);
 313   return registerAndNotify(d_rlimitPerListeners, listener, notify);
 314 }
 315
 316 ListenerCollection::Registration* Options::registerUseTheoryListListener(
 317    Listener* listener, bool notifyIfSet)
 318 {
 319   bool notify = notifyIfSet && wasSetByUser(options::useTheoryList);
 320   return registerAndNotify(d_useTheoryListListeners, listener, notify);
 321 }
 322
 323 ListenerCollection::Registration* Options::registerSetDefaultExprDepthListener(
 324     Listener* listener, bool notifyIfSet)
 325 {
 326   bool notify = notifyIfSet && wasSetByUser(options::defaultExprDepth);
 327   return registerAndNotify(d_setDefaultExprDepthListeners, listener, notify);
 328 }
 329
 330 ListenerCollection::Registration* Options::registerSetDefaultExprDagListener(
 331     Listener* listener, bool notifyIfSet)
 332 {
 333   bool notify = notifyIfSet && wasSetByUser(options::defaultDagThresh);
 334   return registerAndNotify(d_setDefaultDagThreshListeners, listener, notify);
 335 }
 336
 337 ListenerCollection::Registration* Options::registerSetPrintExprTypesListener(
 338     Listener* listener, bool notifyIfSet)
 339 {
 340   bool notify = notifyIfSet && wasSetByUser(options::printExprTypes);
 341   return registerAndNotify(d_setPrintExprTypesListeners, listener, notify);
 342 }
 343
 344 ListenerCollection::Registration* Options::registerSetDumpModeListener(
 345     Listener* listener, bool notifyIfSet)
 346 {
 347   bool notify = notifyIfSet && wasSetByUser(options::dumpModeString);
 348   return registerAndNotify(d_setDumpModeListeners, listener, notify);
 349 }
 350
 351 ListenerCollection::Registration* Options::registerSetPrintSuccessListener(
 352     Listener* listener, bool notifyIfSet)
 353 {
 354   bool notify = notifyIfSet && wasSetByUser(options::printSuccess);
 355   return registerAndNotify(d_setPrintSuccessListeners, listener, notify);
 356 }
 357
 358 ListenerCollection::Registration* Options::registerDumpToFileNameListener(
 359     Listener* listener, bool notifyIfSet)
 360 {
 361   bool notify = notifyIfSet && wasSetByUser(options::dumpToFileName);
 362   return registerAndNotify(d_dumpToFileListeners, listener, notify);
 363 }
 364
 365 ListenerCollection::Registration*
 366 Options::registerSetRegularOutputChannelListener(
 367     Listener* listener, bool notifyIfSet)
 368 {
 369   bool notify = notifyIfSet && wasSetByUser(options::regularChannelName);
 370   return registerAndNotify(d_setRegularChannelListeners, listener, notify);
 371 }
 372
 373 ListenerCollection::Registration*
 374 Options::registerSetDiagnosticOutputChannelListener(
 375     Listener* listener, bool notifyIfSet)
 376 {
 377   bool notify = notifyIfSet && wasSetByUser(options::diagnosticChannelName);
 378   return registerAndNotify(d_setDiagnosticChannelListeners, listener, notify);
 379 }
 380
 381 ListenerCollection::Registration*
 382 Options::registerSetReplayLogFilename(
 383     Listener* listener, bool notifyIfSet)
 384 {
 385   bool notify = notifyIfSet && wasSetByUser(options::replayLogFilename);
 386   return registerAndNotify(d_setReplayFilenameListeners, listener, notify);
 387 }
 388
 389 ${custom_handlers}$
 390
 391
 392 #ifdef CVC4_DEBUG
 393 #  define USE_EARLY_TYPE_CHECKING_BY_DEFAULT true
 394 #else /* CVC4_DEBUG */
 395 #  define USE_EARLY_TYPE_CHECKING_BY_DEFAULT false
 396 #endif /* CVC4_DEBUG */
 397
 398 #if defined(CVC4_MUZZLED) || defined(CVC4_COMPETITION_MODE)
 399 #  define DO_SEMANTIC_CHECKS_BY_DEFAULT false
 400 #else /* CVC4_MUZZLED || CVC4_COMPETITION_MODE */
 401 #  define DO_SEMANTIC_CHECKS_BY_DEFAULT true
 402 #endif /* CVC4_MUZZLED || CVC4_COMPETITION_MODE */
 403
 404 options::OptionsHolder::OptionsHolder() :
 405   ${module_defaults}$
 406 {
 407 }
 408
 409
 410 static const std::string mostCommonOptionsDescription = "\
 411 Most commonly-used CVC4 options:\n"
 412 ${help_common}$;
 413
 414
 415 static const std::string optionsDescription = mostCommonOptionsDescription + "\n\
 416 \n\
 417 Additional CVC4 options:\n"
 418 ${help_others}$;
 419
 420
 421 static const std::string optionsFootnote = "\n\
 422 [*] Each of these options has a --no-OPTIONNAME variant, which reverses the\n\
 423     sense of the option.\n\
 424 ";
 425
 426 static const std::string languageDescription =
 427     "\
 428 Languages currently supported as arguments to the -L / --lang option:\n\
 429   auto                           attempt to automatically determine language\n\
 430   cvc4 | presentation | pl       CVC4 presentation language\n\
 431   smt1 | smtlib1                 SMT-LIB format 1.2\n\
 432   smt | smtlib | smt2 |\n\
 433   smt2.0 | smtlib2 | smtlib2.0   SMT-LIB format 2.0\n\
 434   smt2.5 | smtlib2.5             SMT-LIB format 2.5\n\
 435   smt2.6 | smtlib2.6             SMT-LIB format 2.6\n\
 436   smt2.6.1 | smtlib2.6.1         SMT-LIB format 2.6 with support for the strings standard\n\
 437   tptp                           TPTP format (cnf and fof)\n\
 438   sygus                          SyGuS format\n\
 439 \n\
 440 Languages currently supported as arguments to the --output-lang option:\n\
 441   auto                           match output language to input language\n\
 442   cvc4 | presentation | pl       CVC4 presentation language\n\
 443   cvc3                           CVC3 presentation language\n\
 444   smt1 | smtlib1                 SMT-LIB format 1.2\n\
 445   smt | smtlib | smt2 |\n\
 446   smt2.0 | smtlib2.0 | smtlib2   SMT-LIB format 2.0\n\
 447   smt2.5 | smtlib2.5             SMT-LIB format 2.5\n\
 448   smt2.6 | smtlib2.6             SMT-LIB format 2.6\n\
 449   smt2.6.1 | smtlib2.6.1         SMT-LIB format 2.6 with support for the strings standard\n\
 450   tptp                           TPTP format\n\
 451   z3str                          SMT-LIB 2.0 with Z3-str string constraints\n\
 452   ast                            internal format (simple syntax trees)\n\
 453 ";
 454
 455 std::string Options::getDescription() const {
 456   return optionsDescription;
 457 }
 458
 459 void Options::printUsage(const std::string msg, std::ostream& out) {
 460   out << msg << optionsDescription << std::endl
 461       << optionsFootnote << std::endl << std::flush;
 462 }
 463
 464 void Options::printShortUsage(const std::string msg, std::ostream& out) {
 465   out << msg << mostCommonOptionsDescription << std::endl
 466       << optionsFootnote << std::endl
 467       << "For full usage, please use --help."
 468       << std::endl << std::endl << std::flush;
 469 }
 470
 471 void Options::printLanguageHelp(std::ostream& out) {
 472   out << languageDescription << std::flush;
 473 }
 474
 475 /**
 476  * This is a table of long options.  By policy, each short option
 477  * should have an equivalent long option (but the reverse isn't the
 478  * case), so this table should thus contain all command-line options.
 479  *
 480  * Each option in this array has four elements:
 481  *
 482  * 1. the long option string
 483  * 2. argument behavior for the option:
 484  *    no_argument - no argument permitted
 485  *    required_argument - an argument is expected
 486  *    optional_argument - an argument is permitted but not required
 487  * 3. this is a pointer to an int which is set to the 4th entry of the
 488  *    array if the option is present; or NULL, in which case
 489  *    getopt_long() returns the 4th entry
 490  * 4. the return value for getopt_long() when this long option (or the
 491  *    value to set the 3rd entry to; see #3)
 492  *
 493  * If you add something here, you should add it in src/main/usage.h
 494  * also, to document it.
 495  *
 496  * If you add something that has a short option equivalent, you should
 497  * add it to the getopt_long() call in parseOptions().
 498  */
 499 static struct option cmdlineOptions[] = {
 500   ${cmdline_options}$
 501   { NULL, no_argument, NULL, '\0' }
 502 };/* cmdlineOptions */
 503
 504
 505 // static void preemptGetopt(int& argc, char**& argv, const char* opt) {
 506
 507 //   Debug("preemptGetopt") << "preempting getopt() with " << opt << std::endl;
 508
 509 //   AlwaysAssert(opt != NULL && *opt != '\0');
 510 //   AlwaysAssert(strlen(opt) <= maxoptlen);
 511
 512 //   ++argc;
 513 //   unsigned i = 1;
 514 //   while(argv[i] != NULL && argv[i][0] != '\0') {
 515 //     ++i;
 516 //   }
 517
 518 //   if(argv[i] == NULL) {
 519 //     argv = (char**) realloc(argv, (i + 6) * sizeof(char*));
 520 //     for(unsigned j = i; j < i + 5; ++j) {
 521 //       argv[j] = (char*) malloc(sizeof(char) * maxoptlen);
 522 //       argv[j][0] = '\0';
 523 //     }
 524 //     argv[i + 5] = NULL;
 525 //   }
 526
 527 //   strncpy(argv[i], opt, maxoptlen - 1);
 528 //   argv[i][maxoptlen - 1] = '\0'; // ensure NUL-termination even on overflow
 529 // }
 530
 531 namespace options {
 532
 533 /** Set a given Options* as "current" just for a particular scope. */
 534 class OptionsGuard {
 535   Options** d_field;
 536   Options* d_old;
 537 public:
 538   OptionsGuard(Options** field, Options* opts) :
 539     d_field(field),
 540     d_old(*field) {
 541     *field = opts;
 542   }
 543   ~OptionsGuard() {
 544     *d_field = d_old;
 545   }
 546 };/* class OptionsGuard */
 547
 548 }/* CVC4::options namespace */
 549
 550 /**
 551  * Parse argc/argv and put the result into a CVC4::Options.
 552  * The return value is what's left of the command line (that is, the
 553  * non-option arguments).
 554  *
 555  * Throws OptionException on failures.
 556  */
 557 std::vector<std::string> Options::parseOptions(Options* options,
 558                                                int argc,
 559                                                char* argv[])
 560 {
 561   Assert(options != NULL);
 562   Assert(argv != NULL);
 563
 564   options::OptionsGuard guard(&s_current, options);
 565
 566   const char *progName = argv[0];
 567
 568   // To debug options parsing, you may prefer to simply uncomment this
 569   // and recompile. Debug flags have not been parsed yet so these have
 570   // not been set.
 571   //DebugChannel.on("options");
 572
 573   Debug("options") << "Options::parseOptions == " << options << std::endl;
 574   Debug("options") << "argv == " << argv << std::endl;
 575
 576   // Find the base name of the program.
 577   const char *x = strrchr(progName, '/');
 578   if(x != NULL) {
 579     progName = x + 1;
 580   }
 581   options->d_holder->binary_name = std::string(progName);
 582
 583   ArgumentExtender* argumentExtender = new ArgumentExtenderImplementation();
 584   for(int position = 1; position < argc; position++) {
 585     argumentExtender->pushBackArgument(argv[position]);
 586   }
 587
 588   std::vector<std::string> nonoptions;
 589   parseOptionsRecursive(options, argumentExtender, &nonoptions);
 590   if(Debug.isOn("options")){
 591     for(std::vector<std::string>::const_iterator i = nonoptions.begin(),
 592           iend = nonoptions.end(); i != iend; ++i){
 593       Debug("options") << "nonoptions " << *i << std::endl;
 594     }
 595   }
 596
 597   delete argumentExtender;
 598   return nonoptions;
 599 }
 600
 601 void Options::parseOptionsRecursive(Options* options,
 602                                     ArgumentExtender* extender,
 603                                     std::vector<std::string>* nonoptions)
 604 {
 605   int argc;
 606   char** argv;
 607
 608   extender->movePreemptionsToArguments();
 609   extender->pushFrontArgument("");
 610   extender->getArguments(&argc, &argv);
 611
 612   if(Debug.isOn("options")) {
 613     Debug("options") << "starting a new parseOptionsRecursive with "
 614                      << argc << " arguments" << std::endl;
 615     for( int i = 0; i < argc ; i++ ){
 616       Assert(argv[i] != NULL);
 617       Debug("options") << "  argv[" << i << "] = " << argv[i] << std::endl;
 618     }
 619   }
 620
 621   // Having this synonym simplifies the generation code in mkoptions.
 622   options::OptionsHandler* handler = options->d_handler;
 623   options::OptionsHolder* holder = options->d_holder;
 624
 625   // Reset getopt(), in the case of multiple calls to parseOptions().
 626   // This can be = 1 in newer GNU getopt, but older (< 2007) require = 0.
 627   optind = 0;
 628 #if HAVE_DECL_OPTRESET
 629   optreset = 1; // on BSD getopt() (e.g. Mac OS), might need this
 630 #endif /* HAVE_DECL_OPTRESET */
 631
 632
 633   int main_optind = 0;
 634   int old_optind;
 635
 636
 637   while(true) { // Repeat Forever
 638
 639     if(extender->hasPreemptions()){
 640       // Stop this round of parsing. We now parse recursively
 641       // to start on a new character array for argv.
 642       parseOptionsRecursive(options, extender, nonoptions);
 643       break;
 644     }
 645
 646     optopt = 0;
 647     std::string option, optionarg;
 648
 649     optind = main_optind;
 650     old_optind = main_optind;
 651     //optind_ref = &main_optind;
 652     //argv = main_argv;
 653
 654     // If we encounter an element that is not at zero and does not start
 655     // with a "-", this is a non-option. We consume this element as a
 656     // non-option.
 657     if (main_optind > 0 && main_optind < argc &&
 658         argv[main_optind][0] != '-') {
 659       Debug("options") << "enqueueing " << argv[main_optind]
 660                        << " as a non-option." << std::endl;
 661       nonoptions->push_back(argv[main_optind]);
 662       ++main_optind;
 663       extender->popFrontArgument();
 664       continue;
 665     }
 666
 667
 668     Debug("options") << "[ before, main_optind == " << main_optind << " ]"
 669                      << std::endl;
 670     Debug("options") << "[ before, optind == " << optind << " ]" << std::endl;
 671     Debug("options") << "[ argc == " << argc << ", argv == " << argv << " ]"
 672                      << std::endl;
 673     int c = getopt_long(argc, argv,
 674                         "+:${options_short}$",
 675                         cmdlineOptions, NULL);
 676
 677     while(main_optind < optind) {
 678       main_optind++;
 679       extender->popFrontArgument();
 680     }
 681
 682     Debug("options") << "[ got " << int(c) << " (" << char(c) << ") ]"
 683                      << "[ next option will be at pos: " << optind << " ]"
 684                      << std::endl;
 685
 686     // The initial getopt_long call should always determine that argv[0]
 687     // is not an option and returns -1. We always manually advance beyond
 688     // this element.
 689     //
 690     // We have to reinitialize optind to 0 instead of 1 as we need to support
 691     // changing the argv array passed to getopt.
 692     // This is needed as are using GNU extensions.
 693     // From: http://man7.org/linux/man-pages/man3/getopt.3.html
 694     // A program that scans multiple argument vectors, or rescans the same
 695     // vector more than once, and wants to make use of GNU extensions such
 696     // as '+' and '-' at the start of optstring, or changes the value of
 697     //  POSIXLY_CORRECT between scans, must reinitialize getopt() by
 698     //  resetting optind to 0, rather than the traditional value of 1.
 699     //  (Resetting to 0 forces the invocation of an internal initialization
 700     //  routine that rechecks POSIXLY_CORRECT and checks for GNU extensions
 701     //  in optstring.)
 702     if ( old_optind == 0  && c == -1 ) {
 703       Assert(main_optind > 0);
 704       continue;
 705     }
 706
 707     if ( c == -1 ) {
 708       if(Debug.isOn("options")) {
 709         Debug("options") << "done with option parsing" << std::endl;
 710         for(int index = optind; index < argc; ++index) {
 711           Debug("options") << "remaining " << argv[index] << std::endl;
 712         }
 713       }
 714       break;
 715     }
 716
 717     option = argv[old_optind == 0 ? 1 : old_optind];
 718     optionarg = (optarg == NULL) ? "" : optarg;
 719
 720     Debug("preemptGetopt") << "processing option " << c
 721                            << " (`" << char(c) << "'), " << option << std::endl;
 722
 723     switch(c) {
 724 ${options_handler}$
 725
 726
 727     case ':':
 728       // This can be a long or short option, and the way to get at the
 729       // name of it is different.
 730       throw OptionException(std::string("option `") + option +
 731                             "' missing its required argument");
 732
 733     case '?':
 734     default:
 735       if( ( optopt == 0 ||
 736             ( optopt >= ${option_value_begin}$ &&
 737               optopt <= ${option_value_end}$ )
 738           ) && !strncmp(argv[optind - 1], "--thread", 8) &&
 739           strlen(argv[optind - 1]) > 8 )
 740       {
 741         if(! isdigit(argv[optind - 1][8])) {
 742           throw OptionException(formatThreadOptionException(option));
 743         }
 744         std::vector<std::string>& threadArgv = holder->threadArgv;
 745         char *end;
 746         long tnum = strtol(argv[optind - 1] + 8, &end, 10);
 747         if(tnum < 0 || (*end != '\0' && *end != '=')) {
 748           throw OptionException(formatThreadOptionException(option));
 749         }
 750         if(threadArgv.size() <= size_t(tnum)) {
 751           threadArgv.resize(tnum + 1);
 752         }
 753         if(threadArgv[tnum] != "") {
 754           threadArgv[tnum] += " ";
 755         }
 756         if(*end == '\0') { // e.g., we have --thread0 "foo"
 757           if(argc <= optind) {
 758             throw OptionException(std::string("option `") + option +
 759                                   "' missing its required argument");
 760           }
 761           Debug("options") << "thread " << tnum << " gets option "
 762                            << argv[optind] << std::endl;
 763           threadArgv[tnum] += argv[main_optind];
 764           main_optind++;
 765         } else { // e.g., we have --thread0="foo"
 766           if(end[1] == '\0') {
 767             throw OptionException(std::string("option `") + option +
 768                                   "' missing its required argument");
 769           }
 770           Debug("options") << "thread " << tnum << " gets option "
 771                            << (end + 1) << std::endl;
 772           threadArgv[tnum] += end + 1;
 773         }
 774         Debug("options") << "thread " << tnum << " now has "
 775                          << threadArgv[tnum] << std::endl;
 776         break;
 777       }
 778
 779       throw OptionException(std::string("can't understand option `") + option +
 780                             "'" + suggestCommandLineOptions(option));
 781     }
 782   }
 783
 784   Debug("options") << "got " << nonoptions->size()
 785                    << " non-option arguments." << std::endl;
 786
 787   free(argv);
 788 }
 789
 790 std::string Options::suggestCommandLineOptions(const std::string& optionName)
 791 {
 792   DidYouMean didYouMean;
 793
 794   const char* opt;
 795   for(size_t i = 0; (opt = cmdlineOptions[i].name) != NULL; ++i) {
 796     didYouMean.addWord(std::string("--") + cmdlineOptions[i].name);
 797   }
 798
 799   return didYouMean.getMatchAsString(optionName.substr(0, optionName.find('=')));
 800 }
 801
 802 static const char* smtOptions[] = {
 803   ${options_smt}$
 804   NULL
 805 };/* smtOptions[] */
 806
 807 std::vector<std::string> Options::suggestSmtOptions(
 808     const std::string& optionName)
 809 {
 810   std::vector<std::string> suggestions;
 811
 812   const char* opt;
 813   for(size_t i = 0; (opt = smtOptions[i]) != NULL; ++i) {
 814     if(std::strstr(opt, optionName.c_str()) != NULL) {
 815       suggestions.push_back(opt);
 816     }
 817   }
 818
 819   return suggestions;
 820 }
 821
 822 std::vector<std::vector<std::string> > Options::getOptions() const
 823 {
 824   std::vector< std::vector<std::string> > opts;
 825
 826   ${options_getoptions}$
 827
 828
 829   return opts;
 830 }
 831
 832 void Options::setOption(const std::string& key, const std::string& optionarg)
 833 {
 834   options::OptionsHandler* handler = d_handler;
 835   Options *options = Options::current();
 836   Trace("options") << "SMT setOption(" << key << ", " << optionarg << ")"
 837                    << std::endl;
 838
 839   ${setoption_handlers}$
 840
 841
 842   throw UnrecognizedOptionException(key);
 843 }
 844
 845 std::string Options::getOption(const std::string& key) const
 846 {
 847   Trace("options") << "SMT getOption(" << key << ")" << std::endl;
 848
 849   ${getoption_handlers}$
 850
 851
 852   throw UnrecognizedOptionException(key);
 853 }
 854
 855 #undef USE_EARLY_TYPE_CHECKING_BY_DEFAULT
 856 #undef DO_SEMANTIC_CHECKS_BY_DEFAULT
 857
 858 }  // namespace CVC4