Add native Windows binary for bison.

bison/src/bison/2.4.1/bison-2.4.1-src/examples/calc++/calc++-parser.cc

+
+/* A Bison parser, made by GNU Bison 2.4.1.  */
+
+/* Skeleton implementation for Bison LALR(1) parsers in C++
+   
+      Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
+   Foundation, Inc.
+   
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+   
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+
+/* First part of user declarations.  */
+
+
+/* Line 311 of lalr1.cc  */
+#line 41 "./calc++-parser.cc"
+
+
+#include "calc++-parser.hh"
+
+/* User implementation prologue.  */
+
+
+/* Line 317 of lalr1.cc  */
+#line 50 "./calc++-parser.cc"
+/* Unqualified %code blocks.  */
+
+/* Line 318 of lalr1.cc  */
+#line 8503 "../../doc/bison.texinfo"
+
+# include "calc++-driver.hh"
+
+
+
+/* Line 318 of lalr1.cc  */
+#line 61 "./calc++-parser.cc"
+
+#ifndef YY_
+# if YYENABLE_NLS
+#  if ENABLE_NLS
+#   include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
+#   define YY_(msgid) dgettext ("bison-runtime", msgid)
+#  endif
+# endif
+# ifndef YY_
+#  define YY_(msgid) msgid
+# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E.  */
+#define YYUSE(e) ((void) (e))
+
+/* Enable debugging if requested.  */
+#if YYDEBUG
+
+/* A pseudo ostream that takes yydebug_ into account.  */
+# define YYCDEBUG if (yydebug_) (*yycdebug_)
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)  \
+do {                                                    \
+  if (yydebug_)                                         \
+    {                                                   \
+      *yycdebug_ << Title << ' ';                       \
+      yy_symbol_print_ ((Type), (Value), (Location));   \
+      *yycdebug_ << std::endl;                          \
+    }                                                   \
+} while (false)
+
+# define YY_REDUCE_PRINT(Rule)          \
+do {                                    \
+  if (yydebug_)                         \
+    yy_reduce_print_ (Rule);            \
+} while (false)
+
+# define YY_STACK_PRINT()               \
+do {                                    \
+  if (yydebug_)                         \
+    yystack_print_ ();                  \
+} while (false)
+
+#else /* !YYDEBUG */
+
+# define YYCDEBUG if (false) std::cerr
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+# define YY_REDUCE_PRINT(Rule)
+# define YY_STACK_PRINT()
+
+#endif /* !YYDEBUG */
+
+#define yyerrok         (yyerrstatus_ = 0)
+#define yyclearin       (yychar = yyempty_)
+
+#define YYACCEPT        goto yyacceptlab
+#define YYABORT         goto yyabortlab
+#define YYERROR         goto yyerrorlab
+#define YYRECOVERING()  (!!yyerrstatus_)
+
+
+/* Line 380 of lalr1.cc  */
+#line 1 "[Bison:b4_percent_define_default]"
+
+namespace yy {
+
+/* Line 380 of lalr1.cc  */
+#line 130 "./calc++-parser.cc"
+#if YYERROR_VERBOSE
+
+  /* Return YYSTR after stripping away unnecessary quotes and
+     backslashes, so that it's suitable for yyerror.  The heuristic is
+     that double-quoting is unnecessary unless the string contains an
+     apostrophe, a comma, or backslash (other than backslash-backslash).
+     YYSTR is taken from yytname.  */
+  std::string
+  calcxx_parser::yytnamerr_ (const char *yystr)
+  {
+    if (*yystr == '"')
+      {
+        std::string yyr = "";
+        char const *yyp = yystr;
+
+        for (;;)
+          switch (*++yyp)
+            {
+            case '\'':
+            case ',':
+              goto do_not_strip_quotes;
+
+            case '\\':
+              if (*++yyp != '\\')
+                goto do_not_strip_quotes;
+              /* Fall through.  */
+            default:
+              yyr += *yyp;
+              break;
+
+            case '"':
+              return yyr;
+            }
+      do_not_strip_quotes: ;
+      }
+
+    return yystr;
+  }
+
+#endif
+
+  /// Build a parser object.
+  calcxx_parser::calcxx_parser (calcxx_driver& driver_yyarg)
+    :
+#if YYDEBUG
+      yydebug_ (false),
+      yycdebug_ (&std::cerr),
+#endif
+      driver (driver_yyarg)
+  {
+  }
+
+  calcxx_parser::~calcxx_parser ()
+  {
+  }
+
+#if YYDEBUG
+  /*--------------------------------.
+  | Print this symbol on YYOUTPUT.  |
+  `--------------------------------*/
+
+  inline void
+  calcxx_parser::yy_symbol_value_print_ (int yytype,
+                           const semantic_type* yyvaluep, const location_type* yylocationp)
+  {
+    YYUSE (yylocationp);
+    YYUSE (yyvaluep);
+    switch (yytype)
+      {
+        case 4: /* "\"identifier\"" */
+
+/* Line 449 of lalr1.cc  */
+#line 8532 "../../doc/bison.texinfo"
+        { debug_stream () << *(yyvaluep->sval); };
+
+/* Line 449 of lalr1.cc  */
+#line 207 "./calc++-parser.cc"
+        break;
+      case 5: /* "\"number\"" */
+
+/* Line 449 of lalr1.cc  */
+#line 8535 "../../doc/bison.texinfo"
+        { debug_stream () << (yyvaluep->ival); };
+
+/* Line 449 of lalr1.cc  */
+#line 216 "./calc++-parser.cc"
+        break;
+      case 14: /* "exp" */
+
+/* Line 449 of lalr1.cc  */
+#line 8535 "../../doc/bison.texinfo"
+        { debug_stream () << (yyvaluep->ival); };
+
+/* Line 449 of lalr1.cc  */
+#line 225 "./calc++-parser.cc"
+        break;
+       default:
+          break;
+      }
+  }
+
+
+  void
+  calcxx_parser::yy_symbol_print_ (int yytype,
+                           const semantic_type* yyvaluep, const location_type* yylocationp)
+  {
+    *yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
+               << ' ' << yytname_[yytype] << " ("
+               << *yylocationp << ": ";
+    yy_symbol_value_print_ (yytype, yyvaluep, yylocationp);
+    *yycdebug_ << ')';
+  }
+#endif
+
+  void
+  calcxx_parser::yydestruct_ (const char* yymsg,
+                           int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+  {
+    YYUSE (yylocationp);
+    YYUSE (yymsg);
+    YYUSE (yyvaluep);
+
+    YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+
+    switch (yytype)
+      {
+        case 4: /* "\"identifier\"" */
+
+/* Line 480 of lalr1.cc  */
+#line 8533 "../../doc/bison.texinfo"
+        { delete (yyvaluep->sval); };
+
+/* Line 480 of lalr1.cc  */
+#line 264 "./calc++-parser.cc"
+        break;
+
+        default:
+          break;
+      }
+  }
+
+  void
+  calcxx_parser::yypop_ (unsigned int n)
+  {
+    yystate_stack_.pop (n);
+    yysemantic_stack_.pop (n);
+    yylocation_stack_.pop (n);
+  }
+
+#if YYDEBUG
+  std::ostream&
+  calcxx_parser::debug_stream () const
+  {
+    return *yycdebug_;
+  }
+
+  void
+  calcxx_parser::set_debug_stream (std::ostream& o)
+  {
+    yycdebug_ = &o;
+  }
+
+
+  calcxx_parser::debug_level_type
+  calcxx_parser::debug_level () const
+  {
+    return yydebug_;
+  }
+
+  void
+  calcxx_parser::set_debug_level (debug_level_type l)
+  {
+    yydebug_ = l;
+  }
+#endif
+
+  int
+  calcxx_parser::parse ()
+  {
+    /// Lookahead and lookahead in internal form.
+    int yychar = yyempty_;
+    int yytoken = 0;
+
+    /* State.  */
+    int yyn;
+    int yylen = 0;
+    int yystate = 0;
+
+    /* Error handling.  */
+    int yynerrs_ = 0;
+    int yyerrstatus_ = 0;
+
+    /// Semantic value of the lookahead.
+    semantic_type yylval;
+    /// Location of the lookahead.
+    location_type yylloc;
+    /// The locations where the error started and ended.
+    location_type yyerror_range[2];
+
+    /// $$.
+    semantic_type yyval;
+    /// @$.
+    location_type yyloc;
+
+    int yyresult;
+
+    YYCDEBUG << "Starting parse" << std::endl;
+
+
+    /* User initialization code.  */
+    
+/* Line 559 of lalr1.cc  */
+#line 8466 "../../doc/bison.texinfo"
+{
+  // Initialize the initial location.
+  yylloc.begin.filename = yylloc.end.filename = &driver.file;
+}
+
+/* Line 559 of lalr1.cc  */
+#line 350 "./calc++-parser.cc"
+
+    /* Initialize the stacks.  The initial state will be pushed in
+       yynewstate, since the latter expects the semantical and the
+       location values to have been already stored, initialize these
+       stacks with a primary value.  */
+    yystate_stack_ = state_stack_type (0);
+    yysemantic_stack_ = semantic_stack_type (0);
+    yylocation_stack_ = location_stack_type (0);
+    yysemantic_stack_.push (yylval);
+    yylocation_stack_.push (yylloc);
+
+    /* New state.  */
+  yynewstate:
+    yystate_stack_.push (yystate);
+    YYCDEBUG << "Entering state " << yystate << std::endl;
+
+    /* Accept?  */
+    if (yystate == yyfinal_)
+      goto yyacceptlab;
+
+    goto yybackup;
+
+    /* Backup.  */
+  yybackup:
+
+    /* Try to take a decision without lookahead.  */
+    yyn = yypact_[yystate];
+    if (yyn == yypact_ninf_)
+      goto yydefault;
+
+    /* Read a lookahead token.  */
+    if (yychar == yyempty_)
+      {
+        YYCDEBUG << "Reading a token: ";
+        yychar = yylex (&yylval, &yylloc, driver);
+      }
+
+
+    /* Convert token to internal form.  */
+    if (yychar <= yyeof_)
+      {
+        yychar = yytoken = yyeof_;
+        YYCDEBUG << "Now at end of input." << std::endl;
+      }
+    else
+      {
+        yytoken = yytranslate_ (yychar);
+        YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+      }
+
+    /* If the proper action on seeing token YYTOKEN is to reduce or to
+       detect an error, take that action.  */
+    yyn += yytoken;
+    if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yytoken)
+      goto yydefault;
+
+    /* Reduce or error.  */
+    yyn = yytable_[yyn];
+    if (yyn <= 0)
+      {
+        if (yyn == 0 || yyn == yytable_ninf_)
+        goto yyerrlab;
+        yyn = -yyn;
+        goto yyreduce;
+      }
+
+    /* Shift the lookahead token.  */
+    YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+    /* Discard the token being shifted.  */
+    yychar = yyempty_;
+
+    yysemantic_stack_.push (yylval);
+    yylocation_stack_.push (yylloc);
+
+    /* Count tokens shifted since error; after three, turn off error
+       status.  */
+    if (yyerrstatus_)
+      --yyerrstatus_;
+
+    yystate = yyn;
+    goto yynewstate;
+
+  /*-----------------------------------------------------------.
+  | yydefault -- do the default action for the current state.  |
+  `-----------------------------------------------------------*/
+  yydefault:
+    yyn = yydefact_[yystate];
+    if (yyn == 0)
+      goto yyerrlab;
+    goto yyreduce;
+
+  /*-----------------------------.
+  | yyreduce -- Do a reduction.  |
+  `-----------------------------*/
+  yyreduce:
+    yylen = yyr2_[yyn];
+    /* If YYLEN is nonzero, implement the default value of the action:
+       `$$ = $1'.  Otherwise, use the top of the stack.
+
+       Otherwise, the following line sets YYVAL to garbage.
+       This behavior is undocumented and Bison
+       users should not rely upon it.  */
+    if (yylen)
+      yyval = yysemantic_stack_[yylen - 1];
+    else
+      yyval = yysemantic_stack_[0];
+
+    {
+      slice<location_type, location_stack_type> slice (yylocation_stack_, yylen);
+      YYLLOC_DEFAULT (yyloc, slice, yylen);
+    }
+    YY_REDUCE_PRINT (yyn);
+    switch (yyn)
+      {
+          case 2:
+
+/* Line 678 of lalr1.cc  */
+#line 8545 "../../doc/bison.texinfo"
+    { driver.result = (yysemantic_stack_[(2) - (2)].ival); }
+    break;
+
+  case 3:
+
+/* Line 678 of lalr1.cc  */
+#line 8547 "../../doc/bison.texinfo"
+    {}
+    break;
+
+  case 4:
+
+/* Line 678 of lalr1.cc  */
+#line 8548 "../../doc/bison.texinfo"
+    {}
+    break;
+
+  case 5:
+
+/* Line 678 of lalr1.cc  */
+#line 8552 "../../doc/bison.texinfo"
+    { driver.variables[*(yysemantic_stack_[(3) - (1)].sval)] = (yysemantic_stack_[(3) - (3)].ival); delete (yysemantic_stack_[(3) - (1)].sval); }
+    break;
+
+  case 6:
+
+/* Line 678 of lalr1.cc  */
+#line 8556 "../../doc/bison.texinfo"
+    { (yyval.ival) = (yysemantic_stack_[(3) - (1)].ival) + (yysemantic_stack_[(3) - (3)].ival); }
+    break;
+
+  case 7:
+
+/* Line 678 of lalr1.cc  */
+#line 8557 "../../doc/bison.texinfo"
+    { (yyval.ival) = (yysemantic_stack_[(3) - (1)].ival) - (yysemantic_stack_[(3) - (3)].ival); }
+    break;
+
+  case 8:
+
+/* Line 678 of lalr1.cc  */
+#line 8558 "../../doc/bison.texinfo"
+    { (yyval.ival) = (yysemantic_stack_[(3) - (1)].ival) * (yysemantic_stack_[(3) - (3)].ival); }
+    break;
+
+  case 9:
+
+/* Line 678 of lalr1.cc  */
+#line 8559 "../../doc/bison.texinfo"
+    { (yyval.ival) = (yysemantic_stack_[(3) - (1)].ival) / (yysemantic_stack_[(3) - (3)].ival); }
+    break;
+
+  case 10:
+
+/* Line 678 of lalr1.cc  */
+#line 8560 "../../doc/bison.texinfo"
+    { (yyval.ival) = driver.variables[*(yysemantic_stack_[(1) - (1)].sval)]; delete (yysemantic_stack_[(1) - (1)].sval); }
+    break;
+
+  case 11:
+
+/* Line 678 of lalr1.cc  */
+#line 8561 "../../doc/bison.texinfo"
+    { (yyval.ival) = (yysemantic_stack_[(1) - (1)].ival); }
+    break;
+
+
+
+/* Line 678 of lalr1.cc  */
+#line 539 "./calc++-parser.cc"
+        default:
+          break;
+      }
+    YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
+
+    yypop_ (yylen);
+    yylen = 0;
+    YY_STACK_PRINT ();
+
+    yysemantic_stack_.push (yyval);
+    yylocation_stack_.push (yyloc);
+
+    /* Shift the result of the reduction.  */
+    yyn = yyr1_[yyn];
+    yystate = yypgoto_[yyn - yyntokens_] + yystate_stack_[0];
+    if (0 <= yystate && yystate <= yylast_
+        && yycheck_[yystate] == yystate_stack_[0])
+      yystate = yytable_[yystate];
+    else
+      yystate = yydefgoto_[yyn - yyntokens_];
+    goto yynewstate;
+
+  /*------------------------------------.
+  | yyerrlab -- here on detecting error |
+  `------------------------------------*/
+  yyerrlab:
+    /* If not already recovering from an error, report this error.  */
+    if (!yyerrstatus_)
+      {
+        ++yynerrs_;
+        error (yylloc, yysyntax_error_ (yystate, yytoken));
+      }
+
+    yyerror_range[0] = yylloc;
+    if (yyerrstatus_ == 3)
+      {
+        /* If just tried and failed to reuse lookahead token after an
+         error, discard it.  */
+
+        if (yychar <= yyeof_)
+          {
+          /* Return failure if at end of input.  */
+          if (yychar == yyeof_)
+            YYABORT;
+          }
+        else
+          {
+            yydestruct_ ("Error: discarding", yytoken, &yylval, &yylloc);
+            yychar = yyempty_;
+          }
+      }
+
+    /* Else will try to reuse lookahead token after shifting the error
+       token.  */
+    goto yyerrlab1;
+
+
+  /*---------------------------------------------------.
+  | yyerrorlab -- error raised explicitly by YYERROR.  |
+  `---------------------------------------------------*/
+  yyerrorlab:
+
+    /* Pacify compilers like GCC when the user code never invokes
+       YYERROR and the label yyerrorlab therefore never appears in user
+       code.  */
+    if (false)
+      goto yyerrorlab;
+
+    yyerror_range[0] = yylocation_stack_[yylen - 1];
+    /* Do not reclaim the symbols of the rule which action triggered
+       this YYERROR.  */
+    yypop_ (yylen);
+    yylen = 0;
+    yystate = yystate_stack_[0];
+    goto yyerrlab1;
+
+  /*-------------------------------------------------------------.
+  | yyerrlab1 -- common code for both syntax error and YYERROR.  |
+  `-------------------------------------------------------------*/
+  yyerrlab1:
+    yyerrstatus_ = 3;   /* Each real token shifted decrements this.  */
+
+    for (;;)
+      {
+        yyn = yypact_[yystate];
+        if (yyn != yypact_ninf_)
+        {
+          yyn += yyterror_;
+          if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
+            {
+              yyn = yytable_[yyn];
+              if (0 < yyn)
+                break;
+            }
+        }
+
+        /* Pop the current state because it cannot handle the error token.  */
+        if (yystate_stack_.height () == 1)
+        YYABORT;
+
+        yyerror_range[0] = yylocation_stack_[0];
+        yydestruct_ ("Error: popping",
+                     yystos_[yystate],
+                     &yysemantic_stack_[0], &yylocation_stack_[0]);
+        yypop_ ();
+        yystate = yystate_stack_[0];
+        YY_STACK_PRINT ();
+      }
+
+    yyerror_range[1] = yylloc;
+    // Using YYLLOC is tempting, but would change the location of
+    // the lookahead.  YYLOC is available though.
+    YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
+    yysemantic_stack_.push (yylval);
+    yylocation_stack_.push (yyloc);
+
+    /* Shift the error token.  */
+    YY_SYMBOL_PRINT ("Shifting", yystos_[yyn],
+                     &yysemantic_stack_[0], &yylocation_stack_[0]);
+
+    yystate = yyn;
+    goto yynewstate;
+
+    /* Accept.  */
+  yyacceptlab:
+    yyresult = 0;
+    goto yyreturn;
+
+    /* Abort.  */
+  yyabortlab:
+    yyresult = 1;
+    goto yyreturn;
+
+  yyreturn:
+    if (yychar != yyempty_)
+      yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
+
+    /* Do not reclaim the symbols of the rule which action triggered
+       this YYABORT or YYACCEPT.  */
+    yypop_ (yylen);
+    while (yystate_stack_.height () != 1)
+      {
+        yydestruct_ ("Cleanup: popping",
+                   yystos_[yystate_stack_[0]],
+                   &yysemantic_stack_[0],
+                   &yylocation_stack_[0]);
+        yypop_ ();
+      }
+
+    return yyresult;
+  }
+
+  // Generate an error message.
+  std::string
+  calcxx_parser::yysyntax_error_ (int yystate, int tok)
+  {
+    std::string res;
+    YYUSE (yystate);
+#if YYERROR_VERBOSE
+    int yyn = yypact_[yystate];
+    if (yypact_ninf_ < yyn && yyn <= yylast_)
+      {
+        /* Start YYX at -YYN if negative to avoid negative indexes in
+           YYCHECK.  */
+        int yyxbegin = yyn < 0 ? -yyn : 0;
+
+        /* Stay within bounds of both yycheck and yytname.  */
+        int yychecklim = yylast_ - yyn + 1;
+        int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+        int count = 0;
+        for (int x = yyxbegin; x < yyxend; ++x)
+          if (yycheck_[x + yyn] == x && x != yyterror_)
+            ++count;
+
+        // FIXME: This method of building the message is not compatible
+        // with internationalization.  It should work like yacc.c does it.
+        // That is, first build a string that looks like this:
+        // "syntax error, unexpected %s or %s or %s"
+        // Then, invoke YY_ on this string.
+        // Finally, use the string as a format to output
+        // yytname_[tok], etc.
+        // Until this gets fixed, this message appears in English only.
+        res = "syntax error, unexpected ";
+        res += yytnamerr_ (yytname_[tok]);
+        if (count < 5)
+          {
+            count = 0;
+            for (int x = yyxbegin; x < yyxend; ++x)
+              if (yycheck_[x + yyn] == x && x != yyterror_)
+                {
+                  res += (!count++) ? ", expecting " : " or ";
+                  res += yytnamerr_ (yytname_[x]);
+                }
+          }
+      }
+    else
+#endif
+      res = YY_("syntax error");
+    return res;
+  }
+
+
+  /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+     STATE-NUM.  */
+  const signed char calcxx_parser::yypact_ninf_ = -9;
+  const signed char
+  calcxx_parser::yypact_[] =
+  {
+        -9,    13,     5,    -9,    14,    -9,    -9,    -1,     7,     7,
+       7,     7,     7,    -9,    -1,     6,     6,    -9,    -9
+  };
+
+  /* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
+     doesn't specify something else to do.  Zero means the default is an
+     error.  */
+  const unsigned char
+  calcxx_parser::yydefact_[] =
+  {
+         4,     0,     0,     1,    10,    11,     3,     2,     0,     0,
+       0,     0,     0,    10,     5,     6,     7,     8,     9
+  };
+
+  /* YYPGOTO[NTERM-NUM].  */
+  const signed char
+  calcxx_parser::yypgoto_[] =
+  {
+        -9,    -9,    -9,    -9,    -8
+  };
+
+  /* YYDEFGOTO[NTERM-NUM].  */
+  const signed char
+  calcxx_parser::yydefgoto_[] =
+  {
+        -1,     1,     2,     6,     7
+  };
+
+  /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
+     positive, shift that token.  If negative, reduce the rule which
+     number is the opposite.  If zero, do what YYDEFACT says.  */
+  const signed char calcxx_parser::yytable_ninf_ = -1;
+  const unsigned char
+  calcxx_parser::yytable_[] =
+  {
+        14,    15,    16,    17,    18,     9,    10,    11,    12,     4,
+       5,    13,     5,     3,    11,    12,     0,     8
+  };
+
+  /* YYCHECK.  */
+  const signed char
+  calcxx_parser::yycheck_[] =
+  {
+         8,     9,    10,    11,    12,     6,     7,     8,     9,     4,
+       5,     4,     5,     0,     8,     9,    -1,     3
+  };
+
+  /* STOS_[STATE-NUM] -- The (internal number of the) accessing
+     symbol of state STATE-NUM.  */
+  const unsigned char
+  calcxx_parser::yystos_[] =
+  {
+         0,    11,    12,     0,     4,     5,    13,    14,     3,     6,
+       7,     8,     9,     4,    14,    14,    14,    14,    14
+  };
+
+#if YYDEBUG
+  /* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding
+     to YYLEX-NUM.  */
+  const unsigned short int
+  calcxx_parser::yytoken_number_[] =
+  {
+         0,   256,   257,   258,   259,   260,    43,    45,    42,    47
+  };
+#endif
+
+  /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
+  const unsigned char
+  calcxx_parser::yyr1_[] =
+  {
+         0,    10,    11,    12,    12,    13,    14,    14,    14,    14,
+      14,    14
+  };
+
+  /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
+  const unsigned char
+  calcxx_parser::yyr2_[] =
+  {
+         0,     2,     2,     2,     0,     3,     3,     3,     3,     3,
+       1,     1
+  };
+
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+  /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+     First, the terminals, then, starting at \a yyntokens_, nonterminals.  */
+  const char*
+  const calcxx_parser::yytname_[] =
+  {
+    "\"end of file\"", "error", "$undefined", "\":=\"", "\"identifier\"",
+  "\"number\"", "'+'", "'-'", "'*'", "'/'", "$accept", "unit",
+  "assignments", "assignment", "exp", 0
+  };
+#endif
+
+#if YYDEBUG
+  /* YYRHS -- A `-1'-separated list of the rules' RHS.  */
+  const calcxx_parser::rhs_number_type
+  calcxx_parser::yyrhs_[] =
+  {
+        11,     0,    -1,    12,    14,    -1,    12,    13,    -1,    -1,
+       4,     3,    14,    -1,    14,     6,    14,    -1,    14,     7,
+      14,    -1,    14,     8,    14,    -1,    14,     9,    14,    -1,
+       4,    -1,     5,    -1
+  };
+
+  /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
+     YYRHS.  */
+  const unsigned char
+  calcxx_parser::yyprhs_[] =
+  {
+         0,     0,     3,     6,     9,    10,    14,    18,    22,    26,
+      30,    32
+  };
+
+  /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
+  const unsigned short int
+  calcxx_parser::yyrline_[] =
+  {
+         0,  8545,  8545,  8547,  8548,  8551,  8556,  8557,  8558,  8559,
+    8560,  8561
+  };
+
+  // Print the state stack on the debug stream.
+  void
+  calcxx_parser::yystack_print_ ()
+  {
+    *yycdebug_ << "Stack now";
+    for (state_stack_type::const_iterator i = yystate_stack_.begin ();
+         i != yystate_stack_.end (); ++i)
+      *yycdebug_ << ' ' << *i;
+    *yycdebug_ << std::endl;
+  }
+
+  // Report on the debug stream that the rule \a yyrule is going to be reduced.
+  void
+  calcxx_parser::yy_reduce_print_ (int yyrule)
+  {
+    unsigned int yylno = yyrline_[yyrule];
+    int yynrhs = yyr2_[yyrule];
+    /* Print the symbols being reduced, and their result.  */
+    *yycdebug_ << "Reducing stack by rule " << yyrule - 1
+               << " (line " << yylno << "):" << std::endl;
+    /* The symbols being reduced.  */
+    for (int yyi = 0; yyi < yynrhs; yyi++)
+      YY_SYMBOL_PRINT ("   $" << yyi + 1 << " =",
+                       yyrhs_[yyprhs_[yyrule] + yyi],
+                       &(yysemantic_stack_[(yynrhs) - (yyi + 1)]),
+                       &(yylocation_stack_[(yynrhs) - (yyi + 1)]));
+  }
+#endif // YYDEBUG
+
+  /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
+  calcxx_parser::token_number_type
+  calcxx_parser::yytranslate_ (int t)
+  {
+    static
+    const token_number_type
+    translate_table[] =
+    {
+           0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     8,     6,     2,     7,     2,     9,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
+       5
+    };
+    if ((unsigned int) t <= yyuser_token_number_max_)
+      return translate_table[t];
+    else
+      return yyundef_token_;
+  }
+
+  const int calcxx_parser::yyeof_ = 0;
+  const int calcxx_parser::yylast_ = 17;
+  const int calcxx_parser::yynnts_ = 5;
+  const int calcxx_parser::yyempty_ = -2;
+  const int calcxx_parser::yyfinal_ = 3;
+  const int calcxx_parser::yyterror_ = 1;
+  const int calcxx_parser::yyerrcode_ = 256;
+  const int calcxx_parser::yyntokens_ = 10;
+
+  const unsigned int calcxx_parser::yyuser_token_number_max_ = 260;
+  const calcxx_parser::token_number_type calcxx_parser::yyundef_token_ = 2;
+
+
+/* Line 1054 of lalr1.cc  */
+#line 1 "[Bison:b4_percent_define_default]"
+
+} // yy
+
+/* Line 1054 of lalr1.cc  */
+#line 960 "./calc++-parser.cc"
+
+
+/* Line 1056 of lalr1.cc  */
+#line 8562 "../../doc/bison.texinfo"
+
+#line 8571 "../../doc/bison.texinfo"
+void
+yy::calcxx_parser::error (const yy::calcxx_parser::location_type& l,
+                          const std::string& m)
+{
+  driver.error (l, m);
+}
+