skeletons: fix an error message

[bison.git] / data / lalr1.cc

diff --git a/data/lalr1.cc b/data/lalr1.cc
index fa3a48d484af0e623b108a4ba504786c2d6e4ff9..32654f1deeea65384464d23a7bc0e302ba5e7361 100644 (file)
--- a/data/lalr1.cc
+++ b/data/lalr1.cc
@@ -120,10 +120,9 @@ m4_pushdef([b4_copyright_years],
 m4_define([b4_parser_class_name],
           [b4_percent_define_get([[parser_class_name]])])
 
 m4_define([b4_parser_class_name],
           [b4_percent_define_get([[parser_class_name]])])
 

-b4_locations_if([b4_percent_define_ifdef([[api.location.type]], [],
-  [# Backward compatibility.
+b4_bison_locations_if([# Backward compatibility.

    m4_define([b4_location_constructors])
    m4_define([b4_location_constructors])

-   m4_include(b4_pkgdatadir/[location.cc])])])
+   m4_include(b4_pkgdatadir/[location.cc])])

 m4_include(b4_pkgdatadir/[stack.hh])
 b4_variant_if([m4_include(b4_pkgdatadir/[variant.hh])])
 
 m4_include(b4_pkgdatadir/[stack.hh])
 b4_variant_if([m4_include(b4_pkgdatadir/[variant.hh])])
 


@@ -139,8 +138,8 @@ m4_define([b4_shared_declarations],
 # include <stdexcept>
 # include <string>]b4_defines_if([[
 # include "stack.hh"
 # include <stdexcept>
 # include <string>]b4_defines_if([[
 # include "stack.hh"

-]b4_locations_if([b4_percent_define_ifdef([[api.location.type]], [],
-                                          [[# include "location.hh"]])])])[
+]b4_bison_locations_if([[# include "location.hh"]])])[
+]b4_variant_if([b4_variant_includes])[

 
 ]b4_YYDEBUG_define[
 
 
 ]b4_YYDEBUG_define[
 


@@ -148,9 +147,8 @@ m4_define([b4_shared_declarations],
 
 ]b4_defines_if([],
 [b4_stack_define
 
 ]b4_defines_if([],
 [b4_stack_define

-b4_locations_if([b4_percent_define_ifdef([[api.location.type]], [],
-                                         [b4_position_define
-b4_location_define])])])[
+b4_bison_locations_if([b4_position_define
+b4_location_define])])[

 
 ]b4_variant_if([b4_variant_define])[
 
 
 ]b4_variant_if([b4_variant_define])[
 


@@ -304,7 +302,7 @@ b4_location_define])])])[
     /// Pop \a n symbols the three stacks.
     inline void yypop_ (unsigned int n = 1);
 
     /// Pop \a n symbols the three stacks.
     inline void yypop_ (unsigned int n = 1);
 

-    /* Constants.  */
+    // Constants.

     enum
     {
       yyeof_ = 0,
     enum
     {
       yyeof_ = 0,


@@ -328,18 +326,15 @@ b4_public_types_define])[
 [b4_token_defines
 
 #ifndef ]b4_api_PREFIX[STYPE
 [b4_token_defines
 
 #ifndef ]b4_api_PREFIX[STYPE

- /* Redirection for backward compatibility.  */
+ // Redirection for backward compatibility.

 # define ]b4_api_PREFIX[STYPE b4_namespace_ref::b4_parser_class_name::semantic_type
 #endif
 ])[
 ]b4_percent_code_get([[provides]])[
 ]])
 
 # define ]b4_api_PREFIX[STYPE b4_namespace_ref::b4_parser_class_name::semantic_type
 #endif
 ])[
 ]b4_percent_code_get([[provides]])[
 ]])
 

-# We do want M4 expansion after # for CPP macros.
-m4_changecom()

 b4_defines_if(
 b4_defines_if(

-[m4_divert_push(0)dnl
-@output(b4_spec_defines_file@)@
+[b4_output_begin([b4_spec_defines_file])

 b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++])
 [
 /**
 b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++])
 [
 /**


@@ -347,7 +342,7 @@ b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++])
  ** Define the ]b4_namespace_ref[::parser class.
  */
 
  ** Define the ]b4_namespace_ref[::parser class.
  */
 

-/* C++ LALR(1) parser skeleton written by Akim Demaille.  */
+// C++ LALR(1) parser skeleton written by Akim Demaille.

 
 ]b4_cpp_guard_open([b4_spec_defines_file])[
 ]b4_shared_declarations[
 
 ]b4_cpp_guard_open([b4_spec_defines_file])[
 ]b4_shared_declarations[


@@ -372,14 +367,14 @@ m4_if(b4_prefix, [yy], [],
 ]b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
                [b4_shared_declarations])[
 
 ]b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
                [b4_shared_declarations])[
 

-/* User implementation prologue.  */
+// User implementation prologue.

 ]b4_user_post_prologue[
 ]b4_percent_code_get[
 
 #ifndef YY_
 # if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 ]b4_user_post_prologue[
 ]b4_percent_code_get[
 
 #ifndef YY_
 # if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS

-#   include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
+#   include <libintl.h> // FIXME: INFRINGES ON USER NAME SPACE.

 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
 #  endif
 # endif
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
 #  endif
 # endif


@@ -392,13 +387,13 @@ m4_if(b4_prefix, [yy], [],
 [#define YYRHSLOC(Rhs, K) ((Rhs)[K].location)
 ]b4_yylloc_default_define])[
 
 [#define YYRHSLOC(Rhs, K) ((Rhs)[K].location)
 ]b4_yylloc_default_define])[
 

-/* Suppress unused-variable warnings by "using" E.  */
-#define YYUSE(e) ((void) (e))
+// Suppress unused-variable warnings by "using" E.
+#define YYUSE(E) ((void) (E))

 
 

-/* Enable debugging if requested.  */
+// Enable debugging if requested.

 #if ]b4_api_PREFIX[DEBUG
 
 #if ]b4_api_PREFIX[DEBUG
 

-/* A pseudo ostream that takes yydebug_ into account.  */
+// A pseudo ostream that takes yydebug_ into account.

 # define YYCDEBUG if (yydebug_) (*yycdebug_)
 
 # define YY_SYMBOL_PRINT(Title, Symbol)         \
 # define YYCDEBUG if (yydebug_) (*yycdebug_)
 
 # define YY_SYMBOL_PRINT(Title, Symbol)         \


@@ -423,14 +418,14 @@ m4_if(b4_prefix, [yy], [],
       yystack_print_ ();                \
   } while (false)
 
       yystack_print_ ();                \
   } while (false)
 

-#else /* !]b4_api_PREFIX[DEBUG */
+#else // !]b4_api_PREFIX[DEBUG

 
 # define YYCDEBUG if (false) std::cerr
 # define YY_SYMBOL_PRINT(Title, Symbol)  YYUSE(Symbol)
 # define YY_REDUCE_PRINT(Rule)           static_cast<void>(0)
 # define YY_STACK_PRINT()                static_cast<void>(0)
 
 
 # define YYCDEBUG if (false) std::cerr
 # define YY_SYMBOL_PRINT(Title, Symbol)  YYUSE(Symbol)
 # define YY_REDUCE_PRINT(Rule)           static_cast<void>(0)
 # define YY_STACK_PRINT()                static_cast<void>(0)
 

-#endif /* !]b4_api_PREFIX[DEBUG */
+#endif // !]b4_api_PREFIX[DEBUG

 
 #define yyerrok         (yyerrstatus_ = 0)
 #define yyclearin       (yyempty = true)
 
 #define yyerrok         (yyerrstatus_ = 0)
 #define yyclearin       (yyempty = true)


@@ -465,7 +460,7 @@ m4_if(b4_prefix, [yy], [],
             case '\\':
               if (*++yyp != '\\')
                 goto do_not_strip_quotes;
             case '\\':
               if (*++yyp != '\\')
                 goto do_not_strip_quotes;

-              /* Fall through.  */
+              // Fall through.

             default:
               yyr += *yyp;
               break;
             default:
               yyr += *yyp;
               break;


@@ -690,7 +685,7 @@ m4_if(b4_prefix, [yy], [],
 
 ]m4_ifdef([b4_initial_action], [
 b4_dollar_pushdef([yyla.value], [], [yyla.location])dnl
 
 ]m4_ifdef([b4_initial_action], [
 b4_dollar_pushdef([yyla.value], [], [yyla.location])dnl

-    /* User initialization code.  */
+    // User initialization code.

     b4_user_initial_action
 b4_dollar_popdef])[]dnl
 
     b4_user_initial_action
 b4_dollar_popdef])[]dnl
 


@@ -705,31 +700,32 @@ b4_dollar_popdef])[]dnl
   yynewstate:
     YYCDEBUG << "Entering state " << yystack_[0].state << std::endl;
 
   yynewstate:
     YYCDEBUG << "Entering state " << yystack_[0].state << std::endl;
 

-    /* Accept?  */
+    // Accept?

     if (yystack_[0].state == yyfinal_)
       goto yyacceptlab;
 
     goto yybackup;
 
     if (yystack_[0].state == yyfinal_)
       goto yyacceptlab;
 
     goto yybackup;
 

-    /* Backup.  */
+    // Backup.

   yybackup:
 
   yybackup:
 

-    /* Try to take a decision without lookahead.  */
+    // Try to take a decision without lookahead.

     yyn = yypact_[yystack_[0].state];
     if (yy_pact_value_is_default_ (yyn))
       goto yydefault;
 
     yyn = yypact_[yystack_[0].state];
     if (yy_pact_value_is_default_ (yyn))
       goto yydefault;
 

-    /* Read a lookahead token.  */
+    // Read a lookahead token.

     if (yyempty)
       {
         YYCDEBUG << "Reading a token: ";
         try
           {
 ]b4_token_ctor_if(
     if (yyempty)
       {
         YYCDEBUG << "Reading a token: ";
         try
           {
 ]b4_token_ctor_if(

-[            yyla = b4_function_call([yylex], [symbol_type],
-                                     m4_ifdef([b4_lex_param], b4_lex_param));],
-[            yyla.type = yytranslate_ (b4_function_call([yylex], [int],
-                                     [b4_api_PREFIX[STYPE*], [&yyla.value]][]dnl
+[          symbol_type yylookahead = b4_function_call([yylex], [symbol_type],
+                                   m4_ifdef([b4_lex_param], b4_lex_param));
+          yyla.move(yylookahead);],
+[          yyla.type = yytranslate_ (b4_function_call([yylex], [int],
+                                    [b4_api_PREFIX[STYPE*], [&yyla.value]][]dnl

 b4_locations_if([, [[location*], [&yyla.location]]])dnl
 m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
           }
 b4_locations_if([, [[location*], [&yyla.location]]])dnl
 m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
           }


@@ -748,7 +744,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
     if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.type)
       goto yydefault;
 
     if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.type)
       goto yydefault;
 

-    /* Reduce or error.  */
+    // Reduce or error.

     yyn = yytable_[yyn];
     if (yyn <= 0)
       {
     yyn = yytable_[yyn];
     if (yyn <= 0)
       {


@@ -758,15 +754,14 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
         goto yyreduce;
       }
 
         goto yyreduce;
       }
 

-    /* Discard the token being shifted.  */
+    // Discard the token being shifted.

     yyempty = true;
 
     yyempty = true;
 

-    /* Count tokens shifted since error; after three, turn off error
-       status.  */
+    // Count tokens shifted since error; after three, turn off error status.

     if (yyerrstatus_)
       --yyerrstatus_;
 
     if (yyerrstatus_)
       --yyerrstatus_;
 

-    /* Shift the lookahead token.  */
+    // Shift the lookahead token.

     yypush_ ("Shifting", yyn, yyla);
     goto yynewstate;
 
     yypush_ ("Shifting", yyn, yyla);
     goto yynewstate;
 


@@ -843,7 +838,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
     yylen = 0;
     YY_STACK_PRINT ();
 
     yylen = 0;
     YY_STACK_PRINT ();
 

-    /* Shift the result of the reduction.  */
+    // Shift the result of the reduction.

     yypush_ (YY_NULL, yylhs);
     goto yynewstate;
 
     yypush_ (YY_NULL, yylhs);
     goto yynewstate;
 


@@ -851,7 +846,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
   | yyerrlab -- here on detecting error.  |
   `--------------------------------------*/
   yyerrlab:
   | yyerrlab -- here on detecting error.  |
   `--------------------------------------*/
   yyerrlab:

-    /* If not already recovering from an error, report this error.  */
+    // If not already recovering from an error, report this error.

     if (!yyerrstatus_)
       {
         ++yynerrs_;
     if (!yyerrstatus_)
       {
         ++yynerrs_;


@@ -867,7 +862,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
         /* If just tried and failed to reuse lookahead token after an
            error, discard it.  */
 
         /* If just tried and failed to reuse lookahead token after an
            error, discard it.  */
 

-        /* Return failure if at end of input.  */
+        // Return failure if at end of input.

         if (yyla.type == yyeof_)
           YYABORT;
         else if (!yyempty)
         if (yyla.type == yyeof_)
           YYABORT;
         else if (!yyempty)


@@ -877,8 +872,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
           }
       }
 
           }
       }
 

-    /* Else will try to reuse lookahead token after shifting the error
-       token.  */
+    // Else will try to reuse lookahead token after shifting the error token.

     goto yyerrlab1;
 
 
     goto yyerrlab1;
 
 


@@ -905,7 +899,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
   | yyerrlab1 -- common code for both syntax error and YYERROR.  |
   `-------------------------------------------------------------*/
   yyerrlab1:
   | yyerrlab1 -- common code for both syntax error and YYERROR.  |
   `-------------------------------------------------------------*/
   yyerrlab1:

-    yyerrstatus_ = 3;   /* Each real token shifted decrements this.  */
+    yyerrstatus_ = 3;   // Each real token shifted decrements this.

     {
       stack_symbol_type error_token;
       for (;;)
     {
       stack_symbol_type error_token;
       for (;;)


@@ -935,18 +929,18 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
       yyerror_range[2].location = yyla.location;
       YYLLOC_DEFAULT (error_token.location, yyerror_range, 2);]])[
 
       yyerror_range[2].location = yyla.location;
       YYLLOC_DEFAULT (error_token.location, yyerror_range, 2);]])[
 

-      /* Shift the error token.  */
+      // Shift the error token.

       error_token.state = yyn;
       yypush_ ("Shifting", error_token);
     }
     goto yynewstate;
 
       error_token.state = yyn;
       yypush_ ("Shifting", error_token);
     }
     goto yynewstate;
 

-    /* Accept.  */
+    // Accept.

   yyacceptlab:
     yyresult = 0;
     goto yyreturn;
 
   yyacceptlab:
     yyresult = 0;
     goto yyreturn;
 

-    /* Abort.  */
+    // Abort.

   yyabortlab:
     yyresult = 1;
     goto yyreturn;
   yyabortlab:
     yyresult = 1;
     goto yyreturn;


@@ -1041,7 +1035,7 @@ b4_error_verbose_if([state_type yystate, int yytoken],
                YYCHECK.  In other words, skip the first -YYN actions for
                this state because they are default actions.  */
             int yyxbegin = yyn < 0 ? -yyn : 0;
                YYCHECK.  In other words, skip the first -YYN actions for
                this state because they are default actions.  */
             int yyxbegin = yyn < 0 ? -yyn : 0;

-            /* Stay within bounds of both yycheck and yytname.  */
+            // Stay within bounds of both yycheck and yytname.

             int yychecklim = yylast_ - yyn + 1;
             int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
             for (int yyx = yyxbegin; yyx < yyxend; ++yyx)
             int yychecklim = yylast_ - yyn + 1;
             int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
             for (int yyx = yyxbegin; yyx < yyxend; ++yyx)


@@ -1097,8 +1091,8 @@ b4_error_verbose_if([state_type yystate, int yytoken],
 ]b4_parser_tables_define[
 
 ]b4_token_table_if([], [[#if ]b4_api_PREFIX[DEBUG]])[
 ]b4_parser_tables_define[
 
 ]b4_token_table_if([], [[#if ]b4_api_PREFIX[DEBUG]])[

-  /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
-     First, the terminals, then, starting at \a yyntokens_, nonterminals.  */
+  // YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+  // First, the terminals, then, starting at \a yyntokens_, nonterminals.

   const char*
   const ]b4_parser_class_name[::yytname_[] =
   {
   const char*
   const ]b4_parser_class_name[::yytname_[] =
   {


@@ -1127,10 +1121,10 @@ b4_error_verbose_if([state_type yystate, int yytoken],
   {
     unsigned int yylno = yyrline_[yyrule];
     int yynrhs = yyr2_[yyrule];
   {
     unsigned int yylno = yyrline_[yyrule];
     int yynrhs = yyr2_[yyrule];

-    /* Print the symbols being reduced, and their result.  */
+    // Print the symbols being reduced, and their result.

     *yycdebug_ << "Reducing stack by rule " << yyrule - 1
                << " (line " << yylno << "):" << std::endl;
     *yycdebug_ << "Reducing stack by rule " << yyrule - 1
                << " (line " << yylno << "):" << std::endl;

-    /* The symbols being reduced.  */
+    // The symbols being reduced.

     for (int yyi = 0; yyi < yynrhs; yyi++)
       YY_SYMBOL_PRINT ("   $" << yyi + 1 << " =",
                        ]b4_rhs_data(yynrhs, yyi + 1)[);
     for (int yyi = 0; yyi < yynrhs; yyi++)
       YY_SYMBOL_PRINT ("   $" << yyi + 1 << " =",
                        ]b4_rhs_data(yynrhs, yyi + 1)[);