tests/c++.at

   1 # Checking the C++ Features.                    -*- Autotest -*-
   2
   3 # Copyright (C) 2004-2005, 2007, 2009-2012 Free Software Foundation,
   4 # Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 AT_BANNER([[C++ Features.]])
  20
  21
  22 ## ----------------------- ##
  23 ## Doxygen Documentation.  ##
  24 ## ----------------------- ##
  25
  26 m4_define([AT_CHECK_DOXYGEN],
  27 [m4_case([$1],
  28          [Public],  [m4_pushdef([AT_DOXYGEN_PRIVATE], [NO])],
  29          [Private], [m4_pushdef([AT_DOXYGEN_PRIVATE], [YES])],
  30          [m4_fatal([invalid argument: $1])])
  31 AT_SETUP([Doxygen $1 Documentation])
  32
  33 AT_BISON_OPTION_PUSHDEFS([%skeleton "lalr1.cc"])
  34 AT_DATA([input.yy],
  35 [[%skeleton "lalr1.cc"
  36 %locations
  37 %debug
  38 %defines
  39 %%
  40 exp:;
  41 %%
  42 ]AT_YYERROR_DEFINE[
  43 ]])
  44
  45 AT_BISON_CHECK([-o input.cc input.yy], 0)
  46
  47 AT_DATA([Doxyfile],
  48 [# The PROJECT_NAME tag is a single word (or a sequence of words
  49 # surrounded by quotes) that should identify the project.
  50 PROJECT_NAME = "Bison C++ Parser"
  51
  52 # The QUIET tag can be used to turn on/off the messages that are
  53 # generated by doxygen. Possible values are YES and NO. If left blank
  54 # NO is used.
  55 QUIET = YES
  56
  57 # The WARNINGS tag can be used to turn on/off the warning messages
  58 # that are generated by doxygen. Possible values are YES and NO. If
  59 # left blank NO is used.
  60 WARNINGS     = YES
  61 # If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate
  62 # warnings for undocumented members. If EXTRACT_ALL is set to YES then
  63 # this flag will automatically be disabled.
  64 WARN_IF_UNDOCUMENTED   = YES
  65 # If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings
  66 # for potential errors in the documentation, such as not documenting
  67 # some parameters in a documented function, or documenting parameters
  68 # that don't exist or using markup commands wrongly.
  69 WARN_IF_DOC_ERROR      = YES
  70 # The WARN_FORMAT tag determines the format of the warning messages
  71 # that doxygen can produce. The string should contain the $file,
  72 # $line, and $text tags, which will be replaced by the file and line
  73 # number from which the warning originated and the warning text.
  74 WARN_FORMAT            = "$file:$line: $text"
  75
  76 # If the EXTRACT_ALL tag is set to YES doxygen will assume all
  77 # entities in documentation are documented, even if no documentation
  78 # was available.  Private class members and static file members will
  79 # be hidden unless the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set
  80 # to YES
  81 EXTRACT_ALL            = YES
  82
  83 # If the EXTRACT_PRIVATE tag is set to YES all private members of a
  84 # class will be included in the documentation.
  85 EXTRACT_PRIVATE        = AT_DOXYGEN_PRIVATE
  86
  87 # If the EXTRACT_STATIC tag is set to YES all static members of a file
  88 # will be included in the documentation.
  89 EXTRACT_STATIC         = AT_DOXYGEN_PRIVATE
  90 ])
  91
  92 AT_CHECK([doxygen --version || exit 77], 0, ignore)
  93 AT_CHECK([doxygen], 0, [], [ignore])
  94
  95 AT_BISON_OPTION_POPDEFS
  96 AT_CLEANUP
  97
  98 m4_popdef([AT_DOXYGEN_PRIVATE])
  99 ])# AT_CHECK_DOXYGEN
 100
 101 AT_CHECK_DOXYGEN([Public])
 102 AT_CHECK_DOXYGEN([Private])
 103
 104 ## ------------ ##
 105 ## Namespaces.  ##
 106 ## ------------ ##
 107
 108 # AT_CHECK_NAMESPACE(NAMESPACE-DECL, [COMPILE-ERROR])
 109 # ---------------------------------------------------
 110 # See if Bison can handle %define namespace "NAMESPACE-DECL".  If COMPILE-ERROR
 111 # is specified, then Bison should accept the input, but compilation will fail,
 112 # so don't check compilation.
 113 m4_define([AT_CHECK_NAMESPACE],
 114 [
 115
 116 AT_DATA_GRAMMAR([[input.y]],
 117 [[%language "C++"
 118 %defines
 119 %define namespace "]$1["
 120 %union { int i; }
 121 %define global_tokens_and_yystype
 122
 123 %code {
 124   // YYSTYPE contains a namespace reference.
 125   int yylex (YYSTYPE *lval) {
 126     lval->i = 3;
 127     return 0;
 128   }
 129 }
 130
 131 %%
 132
 133 start: ;
 134
 135 %%
 136
 137 void
 138 ]$1[::parser::error (const ]$1[::parser::location_type &loc,
 139                      const std::string &msg)
 140 {
 141   std::cerr << "At " << loc << ": " << msg << std::endl;
 142 }
 143
 144 int
 145 main (void)
 146 {
 147   ]$1[::parser p;
 148   return p.parse ();
 149 }
 150 ]])
 151
 152 AT_BISON_CHECK([[-o input.cc input.y]])
 153
 154 m4_if([$#], [1],
 155 [AT_COMPILE_CXX([[input]], [[input.cc]])
 156 AT_PARSER_CHECK([[./input]])])
 157
 158 ])
 159
 160 AT_SETUP([[Relative namespace references]])
 161 AT_CHECK_NAMESPACE([[foo]])
 162 AT_CHECK_NAMESPACE([[foo::bar]])
 163 AT_CHECK_NAMESPACE([[foo::bar::baz]])
 164 AT_CLEANUP
 165
 166 AT_SETUP([[Absolute namespace references]])
 167 AT_CHECK_NAMESPACE([[::foo]])
 168 AT_CHECK_NAMESPACE([[::foo::bar]])
 169 AT_CHECK_NAMESPACE([[::foo::bar::baz]])
 170 AT_CHECK_NAMESPACE([[   ::foo]])
 171 AT_CHECK_NAMESPACE([[    ::foo::bar]])
 172 AT_CHECK_NAMESPACE([[  ::foo::bar::baz]])
 173 AT_CLEANUP
 174
 175 AT_SETUP([[Syntactically invalid namespace references]])
 176 AT_CHECK_NAMESPACE([[:foo:bar]], [[-]])
 177 AT_CHECK_NAMESPACE([[foo: :bar]], [[-]])
 178 # This one is interesting because `[3]' is encoded as `@<:@3@:>@', which
 179 # contains single occurrences of `:'.
 180 AT_CHECK_NAMESPACE([[foo[3]::bar::baz]], [[-]])
 181 AT_CHECK_NAMESPACE([[foo::bar,baz]], [[-]])
 182 AT_CHECK_NAMESPACE([[foo::bar::(baz]], [[-]])
 183 AT_CLEANUP
 184
 185
 186 ## ------------------ ##
 187 ## Exception safety.  ##
 188 ## ------------------ ##
 189
 190 AT_SETUP([[Exception safety]])
 191
 192 AT_BISON_OPTION_PUSHDEFS([%skeleton "lalr1.cc"])
 193
 194 AT_DATA_GRAMMAR([[input.yy]],
 195 [[%skeleton "lalr1.cc"
 196 %defines // FIXME: Mandated in 2.6.
 197 %debug
 198 %error-verbose
 199
 200 %code requires
 201 {
 202   #include <cassert>
 203   #include <cstdlib> // size_t and getenv.
 204   #include <iostream>
 205   #include <list>
 206
 207   bool debug = false;
 208
 209   /// A class that counts its number of instances.
 210   struct Object
 211   {
 212     typedef std::list<const Object*> objects;
 213     static objects instances;
 214     char val;
 215
 216     static bool
 217     empty ()
 218     {
 219       return instances.empty();
 220     }
 221
 222     static void
 223     log (Object const *o, const std::string& msg)
 224     {
 225       if (debug)
 226         {
 227           if (o)
 228             std::cerr << o << "->";
 229           std::cerr << msg << " {";
 230           const char* sep = " ";
 231           for (objects::const_iterator i = instances.begin(),
 232                                        i_end = instances.end();
 233                i != i_end;
 234                ++i)
 235             {
 236               std::cerr << sep << *i;
 237               sep = ", ";
 238             }
 239           std::cerr << " }" << std::endl;
 240         }
 241     }
 242
 243     Object (char v)
 244       : val (v)
 245     {
 246       instances.push_back(this);
 247       log (this, "Object::Object");
 248     }
 249
 250     ~Object ()
 251     {
 252       instances.remove(this);
 253       log (this, "Object::~Object");
 254     }
 255   };
 256 }
 257
 258 %code
 259 {
 260   #include <cassert>
 261   #include <cstring> // strchr
 262   #include <stdexcept>
 263   int yylex (yy::parser::semantic_type *);
 264   Object::objects Object::instances;
 265   static char const *input;
 266 }
 267
 268 %union
 269 {
 270   Object *obj;
 271 }
 272
 273 %initial-action
 274 {
 275   if (strchr (input, 'i'))
 276     throw std::runtime_error ("initial-action");
 277 }
 278
 279 %destructor { delete $$; } <obj>;
 280 %printer
 281 {
 282   yyo << $$ << " '" << $$->val << '\'';
 283   if ($$->val == 'p')
 284     throw std::runtime_error ("printer");
 285 } <obj>;
 286
 287 %token <obj> 'a' 'E' 'e' 'p' 'R' 's' 'T'
 288 %type  <obj> list item
 289
 290 %%
 291
 292 start: list { delete $1; };
 293
 294 list:
 295   item       { $$ = $1; }
 296 | item list  { $$ = $1; delete $2; } // Right recursion to load the stack.
 297 ;
 298
 299 item:
 300   'a'  { $$ = $1; }
 301 | 'e'  { YYUSE ($$); YYUSE($1); error (location_type(), "syntax error"); }
 302 // Not just 'E', otherwise we reduce when 'E' is the lookahead, and
 303 // then the stack is emptied, defeating the point of the test.
 304 | 'E' 'a' { YYUSE($1); $$ = $2; }
 305 | 'R'  { $$ = YY_NULL; delete $1; YYERROR; }
 306 | 'p'  { $$ = $1; }
 307 | 's'  { $$ = $1; throw std::runtime_error ("reduction"); }
 308 | 'T'  { $$ = YY_NULL; delete $1; YYABORT; }
 309 | error { $$ = YY_NULL; yyerrok; }
 310 ;
 311 %%
 312
 313 int
 314 yylex (yy::parser::semantic_type *lvalp)
 315 {
 316   // 'a': no error.
 317   // 'e': user action calls error.
 318   // 'E': syntax error, with yyerror that throws.
 319   // 'i': initial action throws.
 320   // 'l': yylex throws.
 321   // 'R': call YYERROR in the action
 322   // 's': reduction throws.
 323   // 'T': call YYABORT in the action
 324   switch (int res = *input++)
 325   {
 326     case 'l':
 327       throw std::runtime_error ("yylex");
 328     default:
 329       lvalp->obj = new Object (res);
 330       // Fall through.
 331     case 0:
 332       return res;
 333   }
 334 }
 335
 336 /* A C++ error reporting function.  */
 337 void
 338 yy::parser::error (const location_type& l, const std::string& m)
 339 {
 340   YYUSE (l);
 341   throw std::runtime_error (m);
 342 }
 343
 344 int
 345 main (int argc, const char *argv[])
 346 {
 347   switch (argc)
 348   {
 349     case 2:
 350       input = argv[1];
 351       break;
 352     case 3:
 353       assert (!strcmp (argv[1], "--debug"));
 354       debug = 1;
 355       input = argv[2];
 356       break;
 357     default:
 358       abort ();
 359   }
 360
 361   yy::parser parser;
 362   debug |= !!getenv ("YYDEBUG");
 363   parser.set_debug_level (debug);
 364   int res = 2;
 365   try
 366   {
 367     res = parser.parse ();
 368   }
 369   catch (const std::exception& e)
 370   {
 371     std::cerr << "exception caught: " << e.what () << std::endl;
 372   }
 373   catch (...)
 374   {
 375     std::cerr << "unknown exception caught" << std::endl;
 376   }
 377   Object::log (YY_NULL, "end");
 378   assert (Object::empty());
 379   return res;
 380 }
 381 ]])
 382 AT_BISON_CHECK([[-o input.cc --report=all input.yy]])
 383 AT_COMPILE_CXX([[input]])
 384
 385 AT_PARSER_CHECK([[./input aaaas]], [[2]], [[]],
 386 [[exception caught: reduction
 387 ]])
 388
 389 AT_PARSER_CHECK([[./input aaaal]], [[2]], [[]],
 390 [[exception caught: yylex
 391 ]])
 392
 393 AT_PARSER_CHECK([[./input i]], [[2]], [[]],
 394 [[exception caught: initial-action
 395 ]])
 396
 397 AT_PARSER_CHECK([[./input aaaap]])
 398
 399 AT_PARSER_CHECK([[./input --debug aaaap]], [[2]], [[]], [[stderr]])
 400 AT_CHECK([[grep '^exception caught: printer$' stderr]], [], [ignore])
 401
 402 AT_PARSER_CHECK([[./input aaaae]], [[2]], [[]],
 403 [[exception caught: syntax error
 404 ]])
 405
 406 AT_PARSER_CHECK([[./input aaaaE]], [[2]], [[]],
 407 [[exception caught: syntax error, unexpected $end, expecting 'a'
 408 ]])
 409
 410 AT_PARSER_CHECK([[./input aaaaT]], [[1]])
 411
 412 # There is error-recovery, so exit success.
 413 AT_PARSER_CHECK([[./input aaaaR]], [[0]])
 414
 415 AT_BISON_OPTION_POPDEFS
 416
 417 AT_CLEANUP