tests/c++.at

   1 # Checking the output filenames.                    -*- Autotest -*-
   2 # Copyright (C) 2004-2005, 2007-2010 Free Software Foundation, Inc.
   3
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 AT_BANNER([[C++ Features.]])
  18
  19
  20 ## ---------- ##
  21 ## Variants.  ##
  22 ## ---------- ##
  23
  24 # AT_CHECK_VARIANTS([DIRECTIVES])
  25 # -------------------------------
  26 # Check the support of variants in C++, with the additional DIRECTIVES.
  27 m4_define([AT_CHECK_VARIANTS],
  28 [AT_SETUP([Variants $1])
  29
  30 # Store strings and integers in a list of strings.
  31 AT_DATA_GRAMMAR([list.yy],
  32 [[%debug
  33 %skeleton "lalr1.cc"
  34 %defines
  35 %define variant
  36 %locations
  37 ]m4_bpatsubst([$1], [\\n], [
  38 ])[
  39
  40 %code requires // code for the .hh file
  41 {
  42 #include <list>
  43 #include <string>
  44 typedef std::list<std::string> strings_type;
  45 }
  46
  47 %code // code for the .cc file
  48 {
  49 #include <algorithm>
  50 #include <iostream>
  51 #include <iterator>
  52 #include <sstream>
  53
  54   static
  55 #if defined USE_LEX_SYMBOL
  56   yy::parser::symbol_type yylex ();
  57 #else
  58   yy::parser::token_type yylex (yy::parser::semantic_type* yylval,
  59                                 yy::parser::location_type* yylloc);
  60 #endif
  61
  62   // Printing a list of strings (for %printer).
  63   // Koening look up will look into std, since that's an std::list.
  64   namespace std
  65   {
  66     std::ostream&
  67     operator<<(std::ostream& o, const strings_type& s)
  68     {
  69       std::copy(s.begin(), s.end(),
  70                 std::ostream_iterator<strings_type::value_type>(o, "\n"));
  71       return o;
  72     }
  73   }
  74
  75   // Conversion to string.
  76   template <typename T>
  77     inline
  78     std::string
  79     string_cast (const T& t)
  80   {
  81     std::ostringstream o;
  82     o << t;
  83     return o.str();
  84   }
  85 }
  86
  87 %token <std::string> TEXT;
  88 %token <int> NUMBER;
  89 %token END_OF_FILE 0;
  90
  91 %type <std::string> item;
  92 // Using the template type to exercize its parsing.
  93 // Starting with :: to ensure we don't output "<::" which starts by the
  94 // digraph for the left square bracket.
  95 %type <::std::list<std::string>> list result;
  96
  97 %printer { debug_stream() << $][$; }
  98   <int> <::std::string> <::std::list<::std::string>>;
  99 %%
 100
 101 result:
 102   list          { std::cout << $][1; }
 103 ;
 104
 105 list:
 106   /* nothing */ { /* Generates an empty string list */ }
 107 | list item     { std::swap($][$,$][1); $$.push_back($][2); }
 108 | list error    { std::swap($][$,$][1); }
 109 ;
 110
 111 item:
 112   TEXT          { std::swap($][$,$][1); }
 113 | NUMBER        { if ($][1 == 3) YYERROR; else $][$ = string_cast($][1); }
 114 ;
 115 %%
 116
 117 #define STAGE_MAX 5
 118 static
 119 #if defined USE_LEX_SYMBOL
 120 yy::parser::symbol_type yylex()
 121 #else
 122 yy::parser::token_type yylex(yy::parser::semantic_type* yylval,
 123                              yy::parser::location_type* yylloc)
 124 #endif
 125 {
 126   typedef yy::parser::token token;
 127   typedef yy::parser::location_type location_type;
 128   static int stage = -1;
 129   ++stage;
 130   if (stage == STAGE_MAX)
 131     {
 132 #if defined USE_LEX_SYMBOL
 133       return yy::parser::make_END_OF_FILE (location_type ());
 134 #else
 135       *yylloc = location_type ();
 136       return token::END_OF_FILE;
 137 #endif
 138     }
 139   else if (stage % 2)
 140     {
 141 #if defined USE_LEX_SYMBOL
 142       return yy::parser::make_NUMBER (stage, location_type ());
 143 #else
 144 # if defined ONE_STAGE_BUILD
 145       yylval->build(stage);
 146 # else
 147       yylval->build<int>() = stage;
 148 # endif
 149       *yylloc = location_type ();
 150       return token::NUMBER;
 151 #endif
 152     }
 153   else
 154     {
 155 #if defined USE_LEX_SYMBOL
 156       return yy::parser::make_TEXT (string_cast (stage), location_type ());
 157 #else
 158 # if defined ONE_STAGE_BUILD
 159       yylval->build (string_cast (stage));
 160 # else
 161       yylval->build<std::string>() = string_cast (stage);
 162 # endif
 163       *yylloc = location_type ();
 164       return token::TEXT;
 165 #endif
 166     }
 167   abort();
 168 }
 169
 170 void
 171 yy::parser::error(const yy::parser::location_type&,
 172                   const std::string& message)
 173 {
 174   std::cerr << message << std::endl;
 175 }
 176
 177 int
 178 main (void)
 179 {
 180   yy::parser p;
 181   p.set_debug_level(!!getenv("YYDEBUG"));
 182   return p.parse();
 183 }
 184 ]])
 185
 186 AT_BISON_CHECK([-o list.cc list.yy])
 187 AT_COMPILE_CXX([list])
 188 AT_CHECK([./list], 0,
 189 [0
 190 1
 191 2
 192 4
 193 ])
 194
 195 AT_CLEANUP
 196 ])
 197
 198 AT_CHECK_VARIANTS([])
 199 AT_CHECK_VARIANTS([%define parse.assert])
 200 AT_CHECK_VARIANTS([[%define parse.assert %code {\n#define ONE_STAGE_BUILD\n}]])
 201 AT_CHECK_VARIANTS([[%define parse.assert %define lex_symbol %code {\n#define USE_LEX_SYMBOL\n}]])
 202 AT_CHECK_VARIANTS([[%define parse.assert %define lex_symbol %code {\n#define USE_LEX_SYMBOL\n} %define api.tokens.prefix "TOK_"]])
 203
 204
 205 ## ----------------------- ##
 206 ## Doxygen Documentation.  ##
 207 ## ----------------------- ##
 208
 209 m4_define([AT_CHECK_DOXYGEN],
 210 [m4_case([$1],
 211          [Public],  [m4_pushdef([AT_DOXYGEN_PRIVATE], [NO])],
 212          [Private], [m4_pushdef([AT_DOXYGEN_PRIVATE], [YES])],
 213          [m4_fatal([invalid argument: $1])])
 214 AT_SETUP([Doxygen $1 Documentation])
 215
 216 AT_DATA([input.yy],
 217 [[%skeleton "lalr1.cc"
 218 %locations
 219 %debug
 220 %defines
 221 %%
 222 exp:;
 223 %%
 224 yy::parser::error (const location& l, const std::string& m)
 225 {
 226   std::cerr << l << s << std::endl;
 227 }
 228 ]])
 229
 230 AT_BISON_CHECK([-o input.cc input.yy], 0)
 231
 232 AT_DATA([Doxyfile],
 233 [# The PROJECT_NAME tag is a single word (or a sequence of words
 234 # surrounded by quotes) that should identify the project.
 235 PROJECT_NAME = "Bison C++ Parser"
 236
 237 # The QUIET tag can be used to turn on/off the messages that are
 238 # generated by doxygen. Possible values are YES and NO. If left blank
 239 # NO is used.
 240 QUIET = YES
 241
 242 # The WARNINGS tag can be used to turn on/off the warning messages
 243 # that are generated by doxygen. Possible values are YES and NO. If
 244 # left blank NO is used.
 245 WARNINGS     = YES
 246 # If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate
 247 # warnings for undocumented members. If EXTRACT_ALL is set to YES then
 248 # this flag will automatically be disabled.
 249 WARN_IF_UNDOCUMENTED   = YES
 250 # If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings
 251 # for potential errors in the documentation, such as not documenting
 252 # some parameters in a documented function, or documenting parameters
 253 # that don't exist or using markup commands wrongly.
 254 WARN_IF_DOC_ERROR      = YES
 255 # The WARN_FORMAT tag determines the format of the warning messages
 256 # that doxygen can produce. The string should contain the $file,
 257 # $line, and $text tags, which will be replaced by the file and line
 258 # number from which the warning originated and the warning text.
 259 WARN_FORMAT            = "$file:$line: $text"
 260
 261 # If the EXTRACT_ALL tag is set to YES doxygen will assume all
 262 # entities in documentation are documented, even if no documentation
 263 # was available.  Private class members and static file members will
 264 # be hidden unless the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set
 265 # to YES
 266 EXTRACT_ALL            = YES
 267
 268 # If the EXTRACT_PRIVATE tag is set to YES all private members of a
 269 # class will be included in the documentation.
 270 EXTRACT_PRIVATE        = AT_DOXYGEN_PRIVATE
 271
 272 # If the EXTRACT_STATIC tag is set to YES all static members of a file
 273 # will be included in the documentation.
 274 EXTRACT_STATIC         = AT_DOXYGEN_PRIVATE
 275 ])
 276
 277 AT_CHECK([doxygen --version || exit 77], 0, ignore)
 278 AT_CHECK([doxygen], 0, [], [ignore])
 279
 280 AT_CLEANUP
 281
 282 m4_popdef([AT_DOXYGEN_PRIVATE])
 283 ])# AT_CHECK_DOXYGEN
 284
 285 AT_CHECK_DOXYGEN([Public])
 286 AT_CHECK_DOXYGEN([Private])
 287
 288
 289 ## ------------ ##
 290 ## Namespaces.  ##
 291 ## ------------ ##
 292
 293 # AT_CHECK_NAMESPACE(NAMESPACE-DECL, [COMPILE-ERROR])
 294 # ---------------------------------------------------
 295 # See if Bison can handle %define namespace "NAMESPACE-DECL".  If COMPILE-ERROR
 296 # is specified, then Bison should accept the input, but compilation will fail,
 297 # so don't check compilation.
 298 m4_define([AT_CHECK_NAMESPACE],
 299 [
 300
 301 AT_DATA_GRAMMAR([[input.y]],
 302 [[%language "C++"
 303 %defines
 304 %define api.namespace "]$1["
 305 %union { int i; }
 306 %define global_tokens_and_yystype
 307 %locations
 308
 309 %code {
 310   // YYSTYPE contains a namespace reference.
 311   int yylex (YYSTYPE *lval, const ]$1[::parser::location_type*) {
 312     lval->i = 3;
 313     return 0;
 314   }
 315 }
 316
 317 %%
 318
 319 start: ;
 320
 321 %%
 322
 323 void
 324 ]$1[::parser::error (const ]$1[::parser::location_type &loc,
 325                      const std::string &msg)
 326 {
 327   std::cerr << "At " << loc << ": " << msg << std::endl;
 328 }
 329
 330 int
 331 main (void)
 332 {
 333   ]$1[::parser p;
 334   return p.parse ();
 335 }
 336 ]])
 337
 338 AT_BISON_CHECK([[-o input.cc input.y]])
 339
 340 m4_if([$#], [1],
 341 [AT_COMPILE_CXX([[input]], [[input.cc]])
 342 AT_PARSER_CHECK([[./input]])])
 343
 344 ])
 345
 346 AT_SETUP([[Relative namespace references]])
 347 AT_CHECK_NAMESPACE([[foo]])
 348 AT_CHECK_NAMESPACE([[foo::bar]])
 349 AT_CHECK_NAMESPACE([[foo::bar::baz]])
 350 AT_CLEANUP
 351
 352 AT_SETUP([[Absolute namespace references]])
 353 AT_CHECK_NAMESPACE([[::foo]])
 354 AT_CHECK_NAMESPACE([[::foo::bar]])
 355 AT_CHECK_NAMESPACE([[::foo::bar::baz]])
 356 AT_CHECK_NAMESPACE([[   ::foo]])
 357 AT_CHECK_NAMESPACE([[    ::foo::bar]])
 358 AT_CHECK_NAMESPACE([[  ::foo::bar::baz]])
 359 AT_CLEANUP
 360
 361 AT_SETUP([[Syntactically invalid namespace references]])
 362 AT_CHECK_NAMESPACE([[:foo:bar]], [[-]])
 363 AT_CHECK_NAMESPACE([[foo: :bar]], [[-]])
 364 # This one is interesting because `[3]' is encoded as `@<:@3@:>@', which
 365 # contains single occurrences of `:'.
 366 AT_CHECK_NAMESPACE([[foo[3]::bar::baz]], [[-]])
 367 AT_CHECK_NAMESPACE([[foo::bar,baz]], [[-]])
 368 AT_CHECK_NAMESPACE([[foo::bar::(baz /* Pacify Emacs ) */]], [[-]])
 369 AT_CLEANUP
 370
 371
 372 ## -------------------------------------- ##
 373 ## Syntax error discarding no lookahead.  ##
 374 ## -------------------------------------- ##
 375
 376 # After a syntax error, lalr1.cc used to not check whether there
 377 # actually is a lookahead before discarding the lookahead.  As a result,
 378 # it mistakenly invoked the destructor for the previous lookahead.
 379
 380 AT_SETUP([[Syntax error discarding no lookahead]])
 381
 382 AT_DATA_GRAMMAR([[input.yy]],
 383 [[%skeleton "lalr1.cc"
 384
 385 %code {
 386   #include <string>
 387   int yylex (yy::parser::semantic_type *, yy::location *);
 388   #define USE(Args)
 389 }
 390
 391 %defines
 392 %locations
 393 %define parse.error verbose
 394
 395 %nonassoc 'a' ;
 396
 397 %destructor {
 398   std::cerr << "Discarding 'a'." << std::endl;
 399 } 'a'
 400
 401 %%
 402
 403 start: error-reduce consistent-error 'a' { USE ($3); };
 404
 405 error-reduce:
 406   'a' 'a' consistent-error 'a' { USE (($1, $2, $4)); }
 407 | 'a' error { std::cerr << "Reducing 'a'." << std::endl; USE ($1); }
 408 ;
 409
 410 consistent-error:
 411   'a'
 412 | /*empty*/ %prec 'a'
 413 ;
 414
 415 // Provide another context in which all rules are useful so that this
 416 // test case looks a little more realistic.
 417 start: 'b' consistent-error ;
 418
 419 %%
 420
 421 int
 422 yylex (yy::parser::semantic_type *, yy::location *)
 423 {
 424   static char const *input = "aa";
 425   return *input++;
 426 }
 427
 428 void
 429 yy::parser::error (const location_type &, const std::string &m)
 430 {
 431   std::cerr << m << std::endl;
 432 }
 433
 434 int
 435 main (void)
 436 {
 437   yy::parser parser;
 438   return parser.parse ();
 439 }
 440 ]])
 441 AT_BISON_CHECK([[-o input.cc input.yy]])
 442 AT_COMPILE_CXX([[input]])
 443 # This used to print "Discarding 'a'." again at the end.
 444 AT_PARSER_CHECK([[./input]], [[1]], [[]],
 445 [[syntax error
 446 Discarding 'a'.
 447 Reducing 'a'.
 448 ]])
 449
 450 AT_CLEANUP