* src/getargs.c (skeleton_arg): Last arg is now location const *.

[bison.git] / data / glr.c

diff --git a/data/glr.c b/data/glr.c
index a3a3f49d994b542b9742f9180086f74a78e6c683..37ba588cc3fa2259f649f5255836919775e681fd 100644 (file)
--- a/data/glr.c
+++ b/data/glr.c
@@ -21,6 +21,9 @@ m4_divert(-1)                                                       -*- C -*-
 
 m4_include(b4_pkgdatadir/[c.m4])
 
 
 m4_include(b4_pkgdatadir/[c.m4])
 

+b4_push_if([
+m4_fatal([Non-deterministic push parsers are not yet supported])])
+

 ## ---------------- ##
 ## Default values.  ##
 ## ---------------- ##
 ## ---------------- ##
 ## Default values.  ##
 ## ---------------- ##


@@ -67,7 +70,7 @@ m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 
 # b4_lyyerror_args
 # ----------------
 
 # b4_lyyerror_args
 # ----------------

-# Same as above, but on the look-ahead, hence &yylloc instead of yylocp.
+# Same as above, but on the lookahead, hence &yylloc instead of yylocp.

 m4_define([b4_lyyerror_args],
 [b4_pure_if([b4_locations_if([&yylloc, ])])dnl
 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 m4_define([b4_lyyerror_args],
 [b4_pure_if([b4_locations_if([&yylloc, ])])dnl
 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])


@@ -82,7 +85,7 @@ m4_define([b4_pure_args],
 
 # b4_lpure_args
 # -------------
 
 # b4_lpure_args
 # -------------

-# Same as above, but on the look-ahead, hence &yylloc instead of yylocp.
+# Same as above, but on the lookahead, hence &yylloc instead of yylocp.

 m4_define([b4_lpure_args],
 [b4_pure_if([b4_locations_if([, &yylloc])])[]b4_user_args])
 
 m4_define([b4_lpure_args],
 [b4_pure_if([b4_locations_if([, &yylloc])])[]b4_user_args])
 


@@ -142,7 +145,7 @@ m4_define([b4_rhs_location],
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert(0)dnl
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert(0)dnl

-@output @output_parser_name@
+@output b4_parser_file_name

 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
   [2002, 2003, 2004, 2005, 2006])
 [
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
   [2002, 2003, 2004, 2005, 2006])
 [


@@ -159,28 +162,31 @@ m4_if(b4_prefix, [yy], [],
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs

-#define yylloc  b4_prefix[]lloc])
+#define yylloc  b4_prefix[]lloc])[
+
+/* Copy the first part of user declarations.  */
+]b4_user_pre_prologue

 
 dnl # b4_shared_declarations
 dnl # ----------------------
 dnl # Declaration that might either go into the header (if --defines)
 dnl # or open coded in the parser body.
 m4_define([b4_shared_declarations],
 
 dnl # b4_shared_declarations
 dnl # ----------------------
 dnl # Declaration that might either go into the header (if --defines)
 dnl # or open coded in the parser body.
 m4_define([b4_shared_declarations],

-[b4_token_enums(b4_tokens)[
+[m4_ifdef([b4_requires],
+[[/* Copy the %requires blocks.  */
+]b4_user_requires])[]dnl

 
 

-/* Copy the first part of user declarations.  */
-]b4_pre_prologue[
+b4_token_enums(b4_tokens)

 
 

-#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
+[#ifndef YYSTYPE

 ]m4_ifdef([b4_stype],
 ]m4_ifdef([b4_stype],

-[typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])
-b4_stype
-/* Line __line__ of glr.c.  */
-b4_syncline([@oline@], [@ofile@])
-       YYSTYPE;],
-[typedef int YYSTYPE;])[
-# define YYSTYPE_IS_DECLARED 1
-# define YYSTYPE_IS_TRIVIAL 1
+[[typedef union ]b4_union_name[
+]b4_user_stype[
+       YYSTYPE;
+# define YYSTYPE_IS_TRIVIAL 1]],
+[m4_if(b4_tag_seen_flag, 0,
+[[typedef int YYSTYPE;
+# define YYSTYPE_IS_TRIVIAL 1]])])[

 #endif
 
 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
 #endif
 
 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED


@@ -198,10 +204,14 @@ typedef struct YYLTYPE
 # define YYLTYPE_IS_DECLARED 1
 # define YYLTYPE_IS_TRIVIAL 1
 #endif
 # define YYLTYPE_IS_DECLARED 1
 # define YYLTYPE_IS_TRIVIAL 1
 #endif

-]])

 
 

-b4_defines_if([#include @output_header_name@],
-              [b4_shared_declarations])[
+]m4_ifdef([b4_provides],
+[[/* Copy the %provides blocks.  */
+]b4_user_provides])[]dnl
+])
+
+b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
+             [b4_shared_declarations])[

 
 /* Enabling traces.  */
 #ifndef YYDEBUG
 
 /* Enabling traces.  */
 #ifndef YYDEBUG


@@ -229,15 +239,11 @@ b4_defines_if([#include @output_header_name@],
 static YYSTYPE yyval_default;
 
 /* Copy the second part of user declarations.  */
 static YYSTYPE yyval_default;
 
 /* Copy the second part of user declarations.  */

-]b4_post_prologue[
+]b4_user_post_prologue[

 
 

-]/* Line __line__ of glr.c.  */
-b4_syncline([@oline@], [@ofile@])
-[

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

-#include <stdarg.h>

 
 #ifndef YY_
 # if YYENABLE_NLS
 
 #ifndef YY_
 # if YYENABLE_NLS


@@ -342,8 +348,7 @@ b4_syncline([@oline@], [@ofile@])
 #define YYMAXUTOK   ]b4_user_token_number_max[
 
 #define YYTRANSLATE(YYX)                                               \
 #define YYMAXUTOK   ]b4_user_token_number_max[
 
 #define YYTRANSLATE(YYX)                                               \

-  ((YYX <= 0) ? YYEOF :                                                        \
-   (unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+  ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)

 
 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
 
 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =


@@ -906,7 +911,7 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
 # undef YYERROR
 # define YYERROR return yyerrok, yyerr
 # undef YYRECOVERING
 # undef YYERROR
 # define YYERROR return yyerrok, yyerr
 # undef YYRECOVERING

-# define YYRECOVERING (yystackp->yyerrState != 0)
+# define YYRECOVERING() (yystackp->yyerrState != 0)

 # undef yyclearin
 # define yyclearin (yychar = YYEMPTY)
 # undef YYFILL
 # undef yyclearin
 # define yyclearin (yychar = YYEMPTY)
 # undef YYFILL


@@ -926,9 +931,7 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
 ]])[
   switch (yyn)
     {
 ]])[
   switch (yyn)
     {

-      ]b4_actions
-/* Line __line__ of glr.c.  */
-b4_syncline([@oline@], [@ofile@])[
+      ]b4_user_actions[

       default: break;
     }
 
       default: break;
     }
 


@@ -1741,7 +1744,7 @@ yyreportTree (yySemanticOption* yyx, int yyindent)
   int yynrhs = yyrhsLength (yyx->yyrule);
   int yyi;
   yyGLRState* yys;
   int yynrhs = yyrhsLength (yyx->yyrule);
   int yyi;
   yyGLRState* yys;

-  yyGLRState* yystates[YYMAXRHS];
+  yyGLRState* yystates[1 + YYMAXRHS];

   yyGLRState yyleftmost_state;
 
   for (yyi = yynrhs, yys = yyx->yystate; 0 < yyi; yyi -= 1, yys = yys->yypred)
   yyGLRState yyleftmost_state;
 
   for (yyi = yynrhs, yys = yyx->yystate; 0 < yyi; yyi -= 1, yys = yys->yypred)


@@ -1757,11 +1760,11 @@ yyreportTree (yySemanticOption* yyx, int yyindent)
   if (yyx->yystate->yyposn < yys->yyposn + 1)
     YYFPRINTF (stderr, "%*s%s -> <Rule %d, empty>\n",
               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
   if (yyx->yystate->yyposn < yys->yyposn + 1)
     YYFPRINTF (stderr, "%*s%s -> <Rule %d, empty>\n",
               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),

-              yyx->yyrule);
+              yyx->yyrule - 1);

   else
     YYFPRINTF (stderr, "%*s%s -> <Rule %d, tokens %lu .. %lu>\n",
               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
   else
     YYFPRINTF (stderr, "%*s%s -> <Rule %d, tokens %lu .. %lu>\n",
               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),

-              yyx->yyrule, (unsigned long int) (yys->yyposn + 1),
+              yyx->yyrule - 1, (unsigned long int) (yys->yyposn + 1),

               (unsigned long int) yyx->yystate->yyposn);
   for (yyi = 1; yyi <= yynrhs; yyi += 1)
     {
               (unsigned long int) yyx->yystate->yyposn);
   for (yyi = 1; yyi <= yynrhs; yyi += 1)
     {


@@ -1836,8 +1839,14 @@ yyresolveLocations (yyGLRState* yys1, int yyn1,
            }
          else
            {
            }
          else
            {

+             /* Both yyresolveAction and yyresolveLocations traverse the GSS
+                in reverse rightmost order.  It is only necessary to invoke
+                yyresolveLocations on a subforest for which yyresolveAction
+                would have been invoked next had an ambiguity not been
+                detected.  Thus the location of the previous state (but not
+                necessarily the previous state itself) is guaranteed to be
+                resolved already.  */

              yyGLRState *yyprevious = yyoption->yystate;
              yyGLRState *yyprevious = yyoption->yystate;

-             YYASSERT (yyprevious->yyresolved);

              yyrhsloc[0].yystate.yyloc = yyprevious->yyloc;
            }
          yychar_current = yychar;
              yyrhsloc[0].yystate.yyloc = yyprevious->yyloc;
            }
          yychar_current = yychar;


@@ -2032,11 +2041,19 @@ yyprocessOneStack (yyGLRStack* yystackp, size_t yyk,
            {
              YYDPRINTF ((stderr, "Reading a token: "));
              yychar = YYLEX;
            {
              YYDPRINTF ((stderr, "Reading a token: "));
              yychar = YYLEX;

+           }
+
+         if (yychar <= YYEOF)
+           {
+             yychar = yytoken = YYEOF;
+             YYDPRINTF ((stderr, "Now at end of input.\n"));
+           }
+         else
+           {

              yytoken = YYTRANSLATE (yychar);
              YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
            }
              yytoken = YYTRANSLATE (yychar);
              YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
            }

-         else
-           yytoken = YYTRANSLATE (yychar);
+

          yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
 
          while (*yyconflicts != 0)
          yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
 
          while (*yyconflicts != 0)


@@ -2077,7 +2094,7 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 #if YYERROR_VERBOSE
       int yyn;
       yyn = yypact[yystackp->yytops.yystates[0]->yylrState];
 #if YYERROR_VERBOSE
       int yyn;
       yyn = yypact[yystackp->yytops.yystates[0]->yylrState];

-      if (YYPACT_NINF < yyn && yyn < YYLAST)
+      if (YYPACT_NINF < yyn && yyn <= YYLAST)

        {
          yySymbol yytoken = YYTRANSLATE (yychar);
          size_t yysize0 = yytnamerr (NULL, yytokenName (yytoken));
        {
          yySymbol yytoken = YYTRANSLATE (yychar);
          size_t yysize0 = yytnamerr (NULL, yytokenName (yytoken));


@@ -2104,7 +2121,7 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
          int yyxbegin = yyn < 0 ? -yyn : 0;
 
          /* Stay within bounds of both yycheck and yytname.  */
          int yyxbegin = yyn < 0 ? -yyn : 0;
 
          /* Stay within bounds of both yycheck and yytname.  */

-         int yychecklim = YYLAST - yyn;
+         int yychecklim = YYLAST - yyn + 1;

          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
          int yycount = 1;
 
          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
          int yycount = 1;
 


@@ -2172,7 +2189,7 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 
 /* Recover from a syntax error on *YYSTACKP, assuming that *YYSTACKP->YYTOKENP,
    yylval, and yylloc are the syntactic category, semantic value, and location
 
 /* Recover from a syntax error on *YYSTACKP, assuming that *YYSTACKP->YYTOKENP,
    yylval, and yylloc are the syntactic category, semantic value, and location

-   of the look-ahead.  */
+   of the lookahead.  */

 /*ARGSUSED*/ static void
 yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 {
 /*ARGSUSED*/ static void
 yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 {


@@ -2202,8 +2219,16 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
          }
        YYDPRINTF ((stderr, "Reading a token: "));
        yychar = YYLEX;
          }
        YYDPRINTF ((stderr, "Reading a token: "));
        yychar = YYLEX;

-       yytoken = YYTRANSLATE (yychar);
-       YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+       if (yychar <= YYEOF)
+         {
+           yychar = yytoken = YYEOF;
+           YYDPRINTF ((stderr, "Now at end of input.\n"));
+         }
+       else
+         {
+           yytoken = YYTRANSLATE (yychar);
+           YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+         }

        yyj = yypact[yystackp->yytops.yystates[0]->yylrState];
        if (yyis_pact_ninf (yyj))
          return;
        yyj = yypact[yystackp->yytops.yystates[0]->yylrState];
        if (yyis_pact_ninf (yyj))
          return;


@@ -2253,7 +2278,8 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
            }
        }
 ]b4_locations_if([[      yystackp->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
            }
        }
 ]b4_locations_if([[      yystackp->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[

-      yydestroyGLRState ("Error: popping", yys]b4_user_args[);
+      if (yys->yypred != NULL)
+       yydestroyGLRState ("Error: popping", yys]b4_user_args[);

       yystackp->yytops.yystates[0] = yys->yypred;
       yystackp->yynextFree -= 1;
       yystackp->yyspaceLeft += 1;
       yystackp->yytops.yystates[0] = yys->yypred;
       yystackp->yynextFree -= 1;
       yystackp->yyspaceLeft += 1;


@@ -2296,19 +2322,17 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
   yylval = yyval_default;
 ]b4_locations_if([
 #if YYLTYPE_IS_TRIVIAL
   yylval = yyval_default;
 ]b4_locations_if([
 #if YYLTYPE_IS_TRIVIAL

-  yylloc.first_line   = yylloc.last_line   = 1;
-  yylloc.first_column = yylloc.last_column = 0;
+  yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
+  yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;

 #endif
 ])
 m4_ifdef([b4_initial_action], [
 m4_pushdef([b4_at_dollar],     [yylloc])dnl
 m4_pushdef([b4_dollar_dollar], [yylval])dnl
   /* User initialization code.  */
 #endif
 ])
 m4_ifdef([b4_initial_action], [
 m4_pushdef([b4_at_dollar],     [yylloc])dnl
 m4_pushdef([b4_dollar_dollar], [yylval])dnl
   /* User initialization code.  */

-  b4_initial_action
+  b4_user_initial_action

 m4_popdef([b4_dollar_dollar])dnl
 m4_popdef([b4_dollar_dollar])dnl

-m4_popdef([b4_at_dollar])dnl
-/* Line __line__ of glr.c.  */
-b4_syncline([@oline@], [@ofile@])])dnl
+m4_popdef([b4_at_dollar])])dnl

 [
   if (! yyinitGLRStack (yystackp, YYINITDEPTH))
     goto yyexhaustedlab;
 [
   if (! yyinitGLRStack (yystackp, YYINITDEPTH))
     goto yyexhaustedlab;


@@ -2356,19 +2380,26 @@ b4_syncline([@oline@], [@ofile@])])dnl
                {
                  YYDPRINTF ((stderr, "Reading a token: "));
                  yychar = YYLEX;
                {
                  YYDPRINTF ((stderr, "Reading a token: "));
                  yychar = YYLEX;

+               }
+
+             if (yychar <= YYEOF)
+               {
+                 yychar = yytoken = YYEOF;
+                 YYDPRINTF ((stderr, "Now at end of input.\n"));
+               }
+             else
+               {

                  yytoken = YYTRANSLATE (yychar);
                  YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
                }
                  yytoken = YYTRANSLATE (yychar);
                  YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
                }

-             else
-               yytoken = YYTRANSLATE (yychar);
+

              yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
              if (*yyconflicts != 0)
                break;
              if (yyisShiftAction (yyaction))
                {
                  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
              yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
              if (*yyconflicts != 0)
                break;
              if (yyisShiftAction (yyaction))
                {
                  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);

-                 if (yychar != YYEOF)
-                   yychar = YYEMPTY;
+                 yychar = YYEMPTY;

                  yyposn += 1;
                  yyglrShift (&yystack, 0, yyaction, yyposn, &yylval, &yylloc);
                  if (0 < yystack.yyerrState)
                  yyposn += 1;
                  yyglrShift (&yystack, 0, yyaction, yyposn, &yylval, &yylloc);
                  if (0 < yystack.yyerrState)


@@ -2484,7 +2515,7 @@ b4_syncline([@oline@], [@ofile@])])dnl
   goto yyreturn;
 
  yyreturn:
   goto yyreturn;
 
  yyreturn:

-  if (yychar != YYEOF && yychar != YYEMPTY)
+  if (yychar != YYEMPTY)

     yydestruct ("Cleanup: discarding lookahead",
                YYTRANSLATE (yychar),
                &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
     yydestruct ("Cleanup: discarding lookahead",
                YYTRANSLATE (yychar),
                &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);


@@ -2506,7 +2537,8 @@ b4_syncline([@oline@], [@ofile@])])dnl
                  {
                    yyGLRState *yys = yystates[yyk];
 ]b4_locations_if([[                yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]]
                  {
                    yyGLRState *yys = yystates[yyk];
 ]b4_locations_if([[                yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]]

-)[                 yydestroyGLRState ("Cleanup: popping", yys]b4_user_args[);
+)[                 if (yys->yypred != NULL)
+                     yydestroyGLRState ("Cleanup: popping", yys]b4_user_args[);

                    yystates[yyk] = yys->yypred;
                    yystack.yynextFree -= 1;
                    yystack.yyspaceLeft += 1;
                    yystates[yyk] = yys->yypred;
                    yystack.yynextFree -= 1;
                    yystack.yyspaceLeft += 1;


@@ -2517,7 +2549,8 @@ b4_syncline([@oline@], [@ofile@])])dnl
       yyfreeGLRStack (&yystack);
     }
 
       yyfreeGLRStack (&yystack);
     }
 

-  return yyresult;
+  /* Make sure YYID is used.  */
+  return YYID (yyresult);

 }
 
 /* DEBUGGING ONLY */
 }
 
 /* DEBUGGING ONLY */


@@ -2578,7 +2611,7 @@ yypdumpstack (yyGLRStack* yystackp)
       else
        {
          fprintf (stderr, "Option. rule: %d, state: %ld, next: %ld",
       else
        {
          fprintf (stderr, "Option. rule: %d, state: %ld, next: %ld",

-                  yyp->yyoption.yyrule,
+                  yyp->yyoption.yyrule - 1,

                   (long int) YYINDEX (yyp->yyoption.yystate),
                   (long int) YYINDEX (yyp->yyoption.yynext));
        }
                   (long int) YYINDEX (yyp->yyoption.yystate),
                   (long int) YYINDEX (yyp->yyoption.yynext));
        }


@@ -2594,8 +2627,12 @@ yypdumpstack (yyGLRStack* yystackp)
 ]
 
 b4_epilogue
 ]
 
 b4_epilogue

-b4_defines_if(
-[@output @output_header_name@
+dnl
+dnl glr.cc produces its own header.
+dnl
+m4_if(b4_skeleton, ["glr.c"],
+[b4_defines_if(
+[@output b4_spec_defines_file

 b4_copyright([Skeleton interface for Bison GLR parsers in C],
   [2002, 2003, 2004, 2005, 2006])
 
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
   [2002, 2003, 2004, 2005, 2006])
 


@@ -2606,4 +2643,4 @@ extern YYSTYPE b4_prefix[]lval;
 b4_locations_if([b4_pure_if([],
 [extern YYLTYPE b4_prefix[]lloc;])
 ])
 b4_locations_if([b4_pure_if([],
 [extern YYLTYPE b4_prefix[]lloc;])
 ])

-])
+])])