tests/c++.at

   1 # Checking the output filenames.                    -*- Autotest -*-
   2
   3 # Copyright (C) 2004-2005, 2007-2012 Free Software Foundation, Inc.
   4
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 AT_BANNER([[C++ Features.]])
  19
  20
  21 ## ---------- ##
  22 ## Variants.  ##
  23 ## ---------- ##
  24
  25 # AT_CHECK_VARIANTS([DIRECTIVES])
  26 # -------------------------------
  27 # Check the support of variants in C++, with the additional DIRECTIVES.
  28 m4_define([AT_CHECK_VARIANTS],
  29 [AT_SETUP([Variants $1])
  30
  31 # Store strings and integers in a list of strings.
  32 AT_DATA_GRAMMAR([list.yy],
  33 [[%debug
  34 %skeleton "lalr1.cc"
  35 %defines
  36 %define variant
  37 %locations
  38 ]m4_bpatsubst([$1], [\\n], [
  39 ])[
  40
  41 %code requires // code for the .hh file
  42 {
  43 #include <list>
  44 #include <string>
  45 typedef std::list<std::string> strings_type;
  46 }
  47
  48 %code // code for the .cc file
  49 {
  50 #include <iostream>
  51 #include <sstream>
  52
  53   static
  54 #if defined USE_LEX_SYMBOL
  55   yy::parser::symbol_type yylex ();
  56 #else
  57   yy::parser::token_type yylex (yy::parser::semantic_type* yylval,
  58                                 yy::parser::location_type* yylloc);
  59 #endif
  60
  61   // Printing a list of strings (for %printer).
  62   // Koening look up will look into std, since that's an std::list.
  63   namespace std
  64   {
  65     std::ostream&
  66     operator<<(std::ostream& o, const strings_type& s)
  67     {
  68       o << '(';
  69       for (strings_type::const_iterator i = s.begin(); i != s.end (); ++i)
  70         {
  71           if (i != s.begin ())
  72             o << ", ";
  73           o << *i;
  74         }
  75       return o << ')';
  76     }
  77   }
  78
  79   // Conversion to string.
  80   template <typename T>
  81     inline
  82     std::string
  83     string_cast (const T& t)
  84   {
  85     std::ostringstream o;
  86     o << t;
  87     return o.str();
  88   }
  89 }
  90
  91 %token <::std::string> TEXT;
  92 %token <int> NUMBER;
  93 %token END_OF_FILE 0;
  94
  95 %type <::std::string> item;
  96 // Using the template type to exercize its parsing.
  97 // Starting with :: to ensure we don't output "<::" which starts by the
  98 // digraph for the left square bracket.
  99 %type <::std::list<std::string>> list result;
 100
 101 %printer { debug_stream() << $][$; }
 102   <int> <::std::string> <::std::list<std::string>>;
 103 %%
 104
 105 result:
 106   list          { std::cout << $][1 << std::endl; }
 107 ;
 108
 109 list:
 110   /* nothing */ { /* Generates an empty string list */ }
 111 | list item     { std::swap($][$,$][1); $$.push_back($][2); }
 112 | list error    { std::swap($][$,$][1); }
 113 ;
 114
 115 item:
 116   TEXT          { std::swap($][$,$][1); }
 117 | NUMBER        { if ($][1 == 3) YYERROR; else $][$ = string_cast($][1); }
 118 ;
 119 %%
 120
 121 #define STAGE_MAX 5
 122 static
 123 #if defined USE_LEX_SYMBOL
 124 yy::parser::symbol_type yylex()
 125 #else
 126 yy::parser::token_type yylex(yy::parser::semantic_type* yylval,
 127                              yy::parser::location_type* yylloc)
 128 #endif
 129 {
 130 #ifndef USE_LEX_SYMBOL
 131   typedef yy::parser::token token;
 132 #endif
 133   typedef yy::parser::location_type location_type;
 134   static int stage = -1;
 135   ++stage;
 136   if (stage == STAGE_MAX)
 137     {
 138 #if defined USE_LEX_SYMBOL
 139       return yy::parser::make_END_OF_FILE (location_type ());
 140 #else
 141       *yylloc = location_type ();
 142       return token::END_OF_FILE;
 143 #endif
 144     }
 145   else if (stage % 2)
 146     {
 147 #if defined USE_LEX_SYMBOL
 148       return yy::parser::make_NUMBER (stage, location_type ());
 149 #else
 150 # if defined ONE_STAGE_BUILD
 151       yylval->build(stage);
 152 # else
 153       yylval->build<int>() = stage;
 154 # endif
 155       *yylloc = location_type ();
 156       return token::NUMBER;
 157 #endif
 158     }
 159   else
 160     {
 161 #if defined USE_LEX_SYMBOL
 162       return yy::parser::make_TEXT (string_cast (stage), location_type ());
 163 #else
 164 # if defined ONE_STAGE_BUILD
 165       yylval->build (string_cast (stage));
 166 # else
 167       yylval->build<std::string>() = string_cast (stage);
 168 # endif
 169       *yylloc = location_type ();
 170       return token::TEXT;
 171 #endif
 172     }
 173   abort();
 174 }
 175
 176 void
 177 yy::parser::error(const yy::parser::location_type&,
 178                   const std::string& message)
 179 {
 180   std::cerr << message << std::endl;
 181 }
 182
 183 int
 184 main ()
 185 {
 186   yy::parser p;
 187   p.set_debug_level(!!getenv("YYDEBUG"));
 188   return p.parse();
 189 }
 190 ]])
 191
 192 AT_BISON_CHECK([-o list.cc list.yy])
 193 AT_COMPILE_CXX([list])
 194 AT_CHECK([./list], 0,
 195          [(0, 1, 2, 4)
 196 ])
 197
 198 AT_CLEANUP
 199 ])
 200
 201 AT_CHECK_VARIANTS([])
 202 AT_CHECK_VARIANTS([%define parse.assert])
 203 AT_CHECK_VARIANTS([[%define parse.assert %code {\n#define ONE_STAGE_BUILD\n}]])
 204 AT_CHECK_VARIANTS([[%define parse.assert %define lex_symbol %code {\n#define USE_LEX_SYMBOL\n}]])
 205 AT_CHECK_VARIANTS([[%define parse.assert %define lex_symbol %code {\n#define USE_LEX_SYMBOL\n} %define api.tokens.prefix "TOK_"]])
 206
 207
 208 ## ----------------------- ##
 209 ## Doxygen Documentation.  ##
 210 ## ----------------------- ##
 211
 212 m4_define([AT_CHECK_DOXYGEN],
 213 [m4_case([$1],
 214          [Public],  [m4_pushdef([AT_DOXYGEN_PRIVATE], [NO])],
 215          [Private], [m4_pushdef([AT_DOXYGEN_PRIVATE], [YES])],
 216          [m4_fatal([invalid argument: $1])])
 217 AT_SETUP([Doxygen $1 Documentation])
 218
 219 AT_DATA([input.yy],
 220 [[%skeleton "lalr1.cc"
 221 %locations
 222 %debug
 223 %defines
 224 %%
 225 exp:;
 226 %%
 227 yy::parser::error (const location& l, const std::string& m)
 228 {
 229   std::cerr << l << s << std::endl;
 230 }
 231 ]])
 232
 233 AT_BISON_CHECK([-o input.cc input.yy], 0)
 234
 235 AT_DATA([Doxyfile],
 236 [# The PROJECT_NAME tag is a single word (or a sequence of words
 237 # surrounded by quotes) that should identify the project.
 238 PROJECT_NAME = "Bison C++ Parser"
 239
 240 # The QUIET tag can be used to turn on/off the messages that are
 241 # generated by doxygen. Possible values are YES and NO. If left blank
 242 # NO is used.
 243 QUIET = YES
 244
 245 # The WARNINGS tag can be used to turn on/off the warning messages
 246 # that are generated by doxygen. Possible values are YES and NO. If
 247 # left blank NO is used.
 248 WARNINGS     = YES
 249 # If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate
 250 # warnings for undocumented members. If EXTRACT_ALL is set to YES then
 251 # this flag will automatically be disabled.
 252 WARN_IF_UNDOCUMENTED   = YES
 253 # If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings
 254 # for potential errors in the documentation, such as not documenting
 255 # some parameters in a documented function, or documenting parameters
 256 # that don't exist or using markup commands wrongly.
 257 WARN_IF_DOC_ERROR      = YES
 258 # The WARN_FORMAT tag determines the format of the warning messages
 259 # that doxygen can produce. The string should contain the $file,
 260 # $line, and $text tags, which will be replaced by the file and line
 261 # number from which the warning originated and the warning text.
 262 WARN_FORMAT            = "$file:$line: $text"
 263
 264 # If the EXTRACT_ALL tag is set to YES doxygen will assume all
 265 # entities in documentation are documented, even if no documentation
 266 # was available.  Private class members and static file members will
 267 # be hidden unless the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set
 268 # to YES
 269 EXTRACT_ALL            = YES
 270
 271 # If the EXTRACT_PRIVATE tag is set to YES all private members of a
 272 # class will be included in the documentation.
 273 EXTRACT_PRIVATE        = AT_DOXYGEN_PRIVATE
 274
 275 # If the EXTRACT_STATIC tag is set to YES all static members of a file
 276 # will be included in the documentation.
 277 EXTRACT_STATIC         = AT_DOXYGEN_PRIVATE
 278 ])
 279
 280 AT_CHECK([doxygen --version || exit 77], 0, ignore)
 281 AT_CHECK([doxygen], 0, [], [ignore])
 282
 283 AT_CLEANUP
 284
 285 m4_popdef([AT_DOXYGEN_PRIVATE])
 286 ])# AT_CHECK_DOXYGEN
 287
 288 AT_CHECK_DOXYGEN([Public])
 289 AT_CHECK_DOXYGEN([Private])
 290
 291
 292 ## ------------ ##
 293 ## Namespaces.  ##
 294 ## ------------ ##
 295
 296 # AT_CHECK_NAMESPACE(NAMESPACE-DECL, [COMPILE-ERROR])
 297 # ---------------------------------------------------
 298 # See if Bison can handle %define namespace "NAMESPACE-DECL".  If COMPILE-ERROR
 299 # is specified, then Bison should accept the input, but compilation will fail,
 300 # so don't check compilation.
 301 m4_define([AT_CHECK_NAMESPACE],
 302 [
 303
 304 AT_DATA_GRAMMAR([[input.y]],
 305 [[%language "C++"
 306 %defines
 307 %define api.namespace "]$1["
 308 %union { int i; }
 309 %define global_tokens_and_yystype
 310 %locations
 311
 312 %code {
 313   // YYSTYPE contains a namespace reference.
 314   int yylex (YYSTYPE *lval, const ]$1[::parser::location_type*) {
 315     lval->i = 3;
 316     return 0;
 317   }
 318 }
 319
 320 %%
 321
 322 start: ;
 323
 324 %%
 325
 326 void
 327 ]$1[::parser::error (const ]$1[::parser::location_type &loc,
 328                      const std::string &msg)
 329 {
 330   std::cerr << "At " << loc << ": " << msg << std::endl;
 331 }
 332
 333 int
 334 main ()
 335 {
 336   ]$1[::parser p;
 337   return p.parse ();
 338 }
 339 ]])
 340
 341 AT_BISON_CHECK([[-o input.cc input.y]])
 342
 343 m4_if([$#], [1],
 344 [AT_COMPILE_CXX([[input]], [[input.cc]])
 345 AT_PARSER_CHECK([[./input]])])
 346
 347 ])
 348
 349 AT_SETUP([[Relative namespace references]])
 350 AT_CHECK_NAMESPACE([[foo]])
 351 AT_CHECK_NAMESPACE([[foo::bar]])
 352 AT_CHECK_NAMESPACE([[foo::bar::baz]])
 353 AT_CLEANUP
 354
 355 AT_SETUP([[Absolute namespace references]])
 356 AT_CHECK_NAMESPACE([[::foo]])
 357 AT_CHECK_NAMESPACE([[::foo::bar]])
 358 AT_CHECK_NAMESPACE([[::foo::bar::baz]])
 359 AT_CHECK_NAMESPACE([[   ::foo]])
 360 AT_CHECK_NAMESPACE([[    ::foo::bar]])
 361 AT_CHECK_NAMESPACE([[  ::foo::bar::baz]])
 362 AT_CLEANUP
 363
 364 AT_SETUP([[Syntactically invalid namespace references]])
 365 AT_CHECK_NAMESPACE([[:foo:bar]], [[-]])
 366 AT_CHECK_NAMESPACE([[foo: :bar]], [[-]])
 367 # This one is interesting because `[3]' is encoded as `@<:@3@:>@', which
 368 # contains single occurrences of `:'.
 369 AT_CHECK_NAMESPACE([[foo[3]::bar::baz]], [[-]])
 370 AT_CHECK_NAMESPACE([[foo::bar,baz]], [[-]])
 371 AT_CHECK_NAMESPACE([[foo::bar::(baz /* Pacify Emacs ) */]], [[-]])
 372 AT_CLEANUP
 373
 374
 375 ## -------------------------------------- ##
 376 ## Syntax error discarding no lookahead.  ##
 377 ## -------------------------------------- ##
 378
 379 # After a syntax error, lalr1.cc used to not check whether there
 380 # actually is a lookahead before discarding the lookahead.  As a result,
 381 # it mistakenly invoked the destructor for the previous lookahead.
 382
 383 AT_SETUP([[Syntax error discarding no lookahead]])
 384
 385 AT_DATA_GRAMMAR([[input.yy]],
 386 [[%skeleton "lalr1.cc"
 387
 388 %code {
 389   #include <string>
 390   int yylex (yy::parser::semantic_type *);
 391   #define USE(Args)
 392 }
 393
 394 %defines
 395 %define parse.error verbose
 396
 397 %nonassoc 'a' ;
 398
 399 %destructor {
 400   std::cerr << "Discarding 'a'." << std::endl;
 401 } 'a'
 402
 403 %%
 404
 405 start: error-reduce consistent-error 'a' { USE ($3); };
 406
 407 error-reduce:
 408   'a' 'a' consistent-error 'a' { USE (($1, $2, $4)); }
 409 | 'a' error { std::cerr << "Reducing 'a'." << std::endl; USE ($1); }
 410 ;
 411
 412 consistent-error:
 413   'a'
 414 | /*empty*/ %prec 'a'
 415 ;
 416
 417 // Provide another context in which all rules are useful so that this
 418 // test case looks a little more realistic.
 419 start: 'b' consistent-error ;
 420
 421 %%
 422
 423 int
 424 yylex (yy::parser::semantic_type *)
 425 {
 426   static char const *input = "aa";
 427   return *input++;
 428 }
 429
 430 void
 431 yy::parser::error (const std::string &m)
 432 {
 433   std::cerr << m << std::endl;
 434 }
 435
 436 int
 437 main ()
 438 {
 439   yy::parser parser;
 440   return parser.parse ();
 441 }
 442 ]])
 443 AT_BISON_CHECK([[-o input.cc input.yy]])
 444 AT_COMPILE_CXX([[input]])
 445 # This used to print "Discarding 'a'." again at the end.
 446 AT_PARSER_CHECK([[./input]], [[1]], [[]],
 447 [[syntax error
 448 Discarding 'a'.
 449 Reducing 'a'.
 450 ]])
 451
 452 AT_CLEANUP
 453
 454
 455 ## --------------------------- ##
 456 ## Syntax error as exception.  ##
 457 ## --------------------------- ##
 458
 459 AT_SETUP([[Syntax error as exception]])
 460
 461 AT_DATA_GRAMMAR([[input.yy]],
 462 [[%skeleton "lalr1.cc"
 463
 464 %code
 465 {
 466   #include <cstdlib>
 467   int yylex (yy::parser::semantic_type *);
 468 }
 469
 470 %defines
 471 %define variant
 472 %define parse.error verbose
 473 %define parse.trace
 474 %%
 475
 476 start:
 477   thing
 478 | start thing
 479 ;
 480
 481 thing:
 482   error   { std::cerr << "caught error" << std::endl; }
 483 | item
 484 ;
 485
 486 item:
 487   'a'
 488 | 's'
 489   {
 490     throw yy::parser::syntax_error("invalid expression");
 491   }
 492
 493 %%
 494
 495 int
 496 yylex (yy::parser::semantic_type *)
 497 {
 498   // 's': syntax error, 'l': lexical error.
 499   static char const *input = "asal";
 500   switch (int res = *input++)
 501   {
 502     case 'l':
 503       throw yy::parser::syntax_error("invalid character");
 504     default:
 505       return res;
 506   }
 507 }
 508
 509 void
 510 yy::parser::error (const std::string &m)
 511 {
 512   std::cerr << "error: " << m << std::endl;
 513 }
 514
 515 int
 516 main ()
 517 {
 518   yy::parser parser;
 519   parser.set_debug_level(!!getenv("YYDEBUG"));
 520   return parser.parse ();
 521 }
 522 ]])
 523 AT_BISON_CHECK([[-o input.cc input.yy]])
 524 AT_COMPILE_CXX([[input]])
 525
 526 AT_PARSER_CHECK([[./input]], [[0]], [[]],
 527 [[error: invalid expression
 528 caught error
 529 error: invalid character
 530 caught error
 531 ]])
 532
 533 AT_CLEANUP