Fix ChangeLog.

[bison.git] / data / yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index 359a9002cec6b27cd84bfc3cf0ec0b47136eb6c9..c7415e2d15e7afebe84bb19af6f45579a3711ace 100644 (file)
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -1,7 +1,7 @@
 m4_divert(-1)                                                       -*- C -*-
 
 # Yacc compatible skeleton for Bison
 m4_divert(-1)                                                       -*- C -*-
 
 # Yacc compatible skeleton for Bison

-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003
+# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004

 # Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify


@@ -76,8 +76,8 @@ m4_define([b4_int_type],
 [m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
        b4_ints_in($@,   [-128],   [127]), [1], [yysigned_char],
 
 [m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
        b4_ints_in($@,   [-128],   [127]), [1], [yysigned_char],
 

-       b4_ints_in($@,      [0], [65535]), [1], [unsigned short],
-       b4_ints_in($@, [-32768], [32767]), [1], [short],
+       b4_ints_in($@,      [0], [65535]), [1], [unsigned short int],
+       b4_ints_in($@, [-32768], [32767]), [1], [short int],

 
        m4_eval([0 <= $1]),                [1], [unsigned int],
 
 
        m4_eval([0 <= $1]),                [1], [unsigned int],
 


@@ -134,7 +134,7 @@ m4_changecom()
 m4_divert(0)dnl
 @output @output_parser_name@
 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
 m4_divert(0)dnl
 @output @output_parser_name@
 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],

-             [1984, 1989, 1990, 2000, 2001, 2002, 2003])[
+             [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])[

 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.
 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.


@@ -216,6 +216,13 @@ b4_syncline([@oline@], [@ofile@])[
 
 #if ! defined (yyoverflow) || YYERROR_VERBOSE
 
 
 #if ! defined (yyoverflow) || YYERROR_VERBOSE
 

+# ifndef YYFREE
+#  define YYFREE free
+# endif
+# ifndef YYMALLOC
+#  define YYMALLOC malloc
+# endif
+

 /* The parser invokes alloca or malloc; define the necessary symbols.  */
 
 # ifdef YYSTACK_USE_ALLOCA
 /* The parser invokes alloca or malloc; define the necessary symbols.  */
 
 # ifdef YYSTACK_USE_ALLOCA


@@ -240,8 +247,8 @@ b4_syncline([@oline@], [@ofile@])[
 #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #   define YYSIZE_T size_t
 #  endif
 #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #   define YYSIZE_T size_t
 #  endif

-#  define YYSTACK_ALLOC malloc
-#  define YYSTACK_FREE free
+#  define YYSTACK_ALLOC YYMALLOC
+#  define YYSTACK_FREE YYFREE

 # endif
 #endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
 
 # endif
 #endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
 


@@ -254,7 +261,7 @@ b4_syncline([@oline@], [@ofile@])[
 /* A type that is properly aligned for any stack member.  */
 union yyalloc
 {
 /* A type that is properly aligned for any stack member.  */
 union yyalloc
 {

-  short yyss;
+  short int yyss;

   YYSTYPE yyvs;
   ]b4_location_if([  YYLTYPE yyls;
 ])dnl
   YYSTYPE yyvs;
   ]b4_location_if([  YYLTYPE yyls;
 ])dnl


@@ -267,10 +274,10 @@ union yyalloc
    N elements.  */
 ]b4_location_if(
 [# define YYSTACK_BYTES(N) \
    N elements.  */
 ]b4_location_if(
 [# define YYSTACK_BYTES(N) \

-     ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE))     \
+     ((N) * (sizeof (short int) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \

       + 2 * YYSTACK_GAP_MAXIMUM)],
 [# define YYSTACK_BYTES(N) \
       + 2 * YYSTACK_GAP_MAXIMUM)],
 [# define YYSTACK_BYTES(N) \

-     ((N) * (sizeof (short) + sizeof (YYSTYPE))                                \
+     ((N) * (sizeof (short int) + sizeof (YYSTYPE))                    \

       + YYSTACK_GAP_MAXIMUM)])[
 
 /* Copy COUNT objects from FROM to TO.  The source and destination do
       + YYSTACK_GAP_MAXIMUM)])[
 
 /* Copy COUNT objects from FROM to TO.  The source and destination do


@@ -312,7 +319,7 @@ union yyalloc
 #if defined (__STDC__) || defined (__cplusplus)
    typedef signed char yysigned_char;
 #else
 #if defined (__STDC__) || defined (__cplusplus)
    typedef signed char yysigned_char;
 #else

-   typedef short yysigned_char;
+   typedef short int yysigned_char;

 #endif
 
 /* YYFINAL -- State number of the termination state. */
 #endif
 
 /* YYFINAL -- State number of the termination state. */


@@ -466,14 +473,7 @@ static const ]b4_int_type_for([b4_stos])[ yystos[] =
 
 #define YYACCEPT       goto yyacceptlab
 #define YYABORT                goto yyabortlab
 
 #define YYACCEPT       goto yyacceptlab
 #define YYABORT                goto yyabortlab

-#define YYERROR                ]b4_location_if([do                             \
-                         {                             \
-                           yylerrsp = yylsp;           \
-                           *++yylerrsp = yyloc;        \
-                           goto yyerrlab1;             \
-                         }                             \
-                       while (0)],
-                       [goto yyerrlab1])[
+#define YYERROR                goto yyerrorlab

 
 
 /* Like YYERROR except do call yyerror.  This remains here temporarily
 
 
 /* Like YYERROR except do call yyerror.  This remains here temporarily


@@ -508,11 +508,11 @@ while (0)
    are run).  */
 
 #ifndef YYLLOC_DEFAULT
    are run).  */
 
 #ifndef YYLLOC_DEFAULT

-# define YYLLOC_DEFAULT(Current, Rhs, N)         \
-  Current.first_line   = Rhs[1].first_line;      \
-  Current.first_column = Rhs[1].first_column;    \
-  Current.last_line    = Rhs[N].last_line;       \
-  Current.last_column  = Rhs[N].last_column;
+# define YYLLOC_DEFAULT(Current, Rhs, N)               \
+   ((Current).first_line   = (Rhs)[1].first_line,      \
+    (Current).first_column = (Rhs)[1].first_column,    \
+    (Current).last_line    = (Rhs)[N].last_line,       \
+    (Current).last_column  = (Rhs)[N].last_column)

 #endif
 
 /* YYLEX -- calling `yylex' with the right arguments.  */
 #endif
 
 /* YYLEX -- calling `yylex' with the right arguments.  */


@@ -556,12 +556,12 @@ do {                                                              \
 
 /*------------------------------------------------------------------.
 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
 
 /*------------------------------------------------------------------.
 | yy_stack_print -- Print the state stack from its BOTTOM up to its |

-| TOP (cinluded).                                                   |
+| TOP (included).                                                   |

 `------------------------------------------------------------------*/
 
 ]b4_c_function_def([yy_stack_print], [static void],
 `------------------------------------------------------------------*/
 
 ]b4_c_function_def([yy_stack_print], [static void],

-                   [[short *bottom], [bottom]],
-                   [[short *top],    [top]])[
+                   [[short int *bottom], [bottom]],
+                   [[short int *top],    [top]])[

 {
   YYFPRINTF (stderr, "Stack now");
   for (/* Nothing. */; bottom <= top; ++bottom)
 {
   YYFPRINTF (stderr, "Stack now");
   for (/* Nothing. */; bottom <= top; ++bottom)


@@ -713,15 +713,15 @@ m4_divert_push([KILL])# ======================== M4 code.
 # Declare the variables that are global, or local to YYPARSE if
 # pure-parser.
 m4_define([b4_declare_parser_variables],
 # Declare the variables that are global, or local to YYPARSE if
 # pure-parser.
 m4_define([b4_declare_parser_variables],

-[/* The lookahead symbol.  */
+[/* The look-ahead symbol.  */

 int yychar;
 
 int yychar;
 

-/* The semantic value of the lookahead symbol.  */
+/* The semantic value of the look-ahead symbol.  */

 YYSTYPE yylval;
 
 /* Number of syntax errors so far.  */
 int yynerrs;b4_location_if([
 YYSTYPE yylval;
 
 /* Number of syntax errors so far.  */
 int yynerrs;b4_location_if([

-/* Location data for the lookahead symbol.  */
+/* Location data for the look-ahead symbol.  */

 YYLTYPE yylloc;])
 ])
 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
 YYLTYPE yylloc;])
 ])
 m4_divert_pop([KILL])dnl# ====================== End of M4 code.


@@ -751,7 +751,7 @@ b4_c_function_def([yyparse], [int], b4_parse_param)
   int yyresult;
   /* Number of tokens to shift before error messages enabled.  */
   int yyerrstatus;
   int yyresult;
   /* Number of tokens to shift before error messages enabled.  */
   int yyerrstatus;

-  /* Lookahead token as an internal (translated) token number.  */
+  /* Look-ahead token as an internal (translated) token number.  */

   int yytoken = 0;
 
   /* Three stacks and their tools:
   int yytoken = 0;
 
   /* Three stacks and their tools:


@@ -763,9 +763,9 @@ b4_c_function_def([yyparse], [int], b4_parse_param)
      to reallocate them elsewhere.  */
 
   /* The state stack.  */
      to reallocate them elsewhere.  */
 
   /* The state stack.  */

-  short        yyssa[YYINITDEPTH];
-  short *yyss = yyssa;
-  register short *yyssp;
+  short int yyssa[YYINITDEPTH];
+  short int *yyss = yyssa;
+  register short int *yyssp;

 
   /* The semantic value stack.  */
   YYSTYPE yyvsa[YYINITDEPTH];
 
   /* The semantic value stack.  */
   YYSTYPE yyvsa[YYINITDEPTH];


@@ -807,7 +807,17 @@ b4_c_function_def([yyparse], [int], b4_parse_param)
   yyssp = yyss;
   yyvsp = yyvs;
 ]b4_location_if([  yylsp = yyls;])[
   yyssp = yyss;
   yyvsp = yyvs;
 ]b4_location_if([  yylsp = yyls;])[

-  goto yysetstate;
+]m4_ifdef([b4_initial_action], [
+m4_pushdef([b4_at_dollar],     [(*yylsp)])dnl
+m4_pushdef([b4_dollar_dollar], [(*yyvsp)])dnl
+  /* User initialization code. */
+  b4_initial_action
+m4_popdef([b4_dollar_dollar])dnl
+m4_popdef([b4_at_dollar])dnl
+/* Line __line__ of yacc.c.  */
+b4_syncline([@oline@], [@ofile@])])dnl
+
+[  goto yysetstate;

 
 /*------------------------------------------------------------.
 | yynewstate -- Push a new state, which is found in yystate.  |
 
 /*------------------------------------------------------------.
 | yynewstate -- Push a new state, which is found in yystate.  |


@@ -832,7 +842,7 @@ b4_c_function_def([yyparse], [int], b4_parse_param)
           these so that the &'s don't force the real ones into
           memory.  */
        YYSTYPE *yyvs1 = yyvs;
           these so that the &'s don't force the real ones into
           memory.  */
        YYSTYPE *yyvs1 = yyvs;

-       short *yyss1 = yyss;
+       short int *yyss1 = yyss;

 ]b4_location_if([      YYLTYPE *yyls1 = yyls;])[
 
        /* Each stack pointer address is followed by the size of the
 ]b4_location_if([      YYLTYPE *yyls1 = yyls;])[
 
        /* Each stack pointer address is followed by the size of the


@@ -860,7 +870,7 @@ b4_c_function_def([yyparse], [int], b4_parse_param)
        yystacksize = YYMAXDEPTH;
 
       {
        yystacksize = YYMAXDEPTH;
 
       {

-       short *yyss1 = yyss;
+       short int *yyss1 = yyss;

        union yyalloc *yyptr =
          (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
        if (! yyptr)
        union yyalloc *yyptr =
          (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
        if (! yyptr)


@@ -896,18 +906,18 @@ b4_c_function_def([yyparse], [int], b4_parse_param)
 yybackup:
 
 /* Do appropriate processing given the current state.  */
 yybackup:
 
 /* Do appropriate processing given the current state.  */

-/* Read a lookahead token if we need one and don't already have one.  */
+/* Read a look-ahead token if we need one and don't already have one.  */

 /* yyresume: */
 
 /* yyresume: */
 

-  /* First try to decide what to do without reference to lookahead token.  */
+  /* First try to decide what to do without reference to look-ahead token.  */

 
   yyn = yypact[yystate];
   if (yyn == YYPACT_NINF)
     goto yydefault;
 
 
   yyn = yypact[yystate];
   if (yyn == YYPACT_NINF)
     goto yydefault;
 

-  /* Not known => get a lookahead token if don't already have one.  */
+  /* Not known => get a look-ahead token if don't already have one.  */

 
 

-  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */
+  /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol.  */

   if (yychar == YYEMPTY)
     {
       YYDPRINTF ((stderr, "Reading a token: "));
   if (yychar == YYEMPTY)
     {
       YYDPRINTF ((stderr, "Reading a token: "));


@@ -942,7 +952,7 @@ yybackup:
   if (yyn == YYFINAL)
     YYACCEPT;
 
   if (yyn == YYFINAL)
     YYACCEPT;
 

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

   YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));
 
   /* Discard the token being shifted unless it is eof.  */
   YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));
 
   /* Discard the token being shifted unless it is eof.  */


@@ -990,7 +1000,7 @@ yyreduce:
 
 ]b4_location_if(
 [  /* Default location. */
 
 ]b4_location_if(
 [  /* Default location. */

-  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);])[
+  YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);])[

   YY_REDUCE_PRINT (yyn);
   switch (yyn)
     ]{
   YY_REDUCE_PRINT (yyn);
   switch (yyn)
     ]{


@@ -1098,38 +1108,61 @@ yyerrlab:
 
   if (yyerrstatus == 3)
     {
 
   if (yyerrstatus == 3)
     {

-      /* If just tried and failed to reuse lookahead token after an
+      /* If just tried and failed to reuse look-ahead token after an

         error, discard it.  */
 
         error, discard it.  */
 

-      /* Return failure if at end of input.  */
-      if (yychar == YYEOF)
+      if (yychar <= YYEOF)

         {
         {

-         /* Pop the error token.  */
-          YYPOPSTACK;
-         /* Pop the rest of the stack.  */
-         while (yyss < yyssp)
-           {
-             YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
-             yydestruct (yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
-             YYPOPSTACK;
-           }
-         YYABORT;
+          /* If at end of input, pop the error token,
+            then the rest of the stack, then return failure.  */
+         if (yychar == YYEOF)
+            for (;;)
+              {
+                YYPOPSTACK;
+                if (yyssp == yyss)
+                  YYABORT;
+                YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
+                yydestruct (yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
+              }

         }
         }

-
-      YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
-      yydestruct (yytoken, &yylval]b4_location_if([, &yylloc])[);
-      yychar = YYEMPTY;
-]b4_location_if([      *++yylerrsp = yylloc;])[
+      else
+       {
+         YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
+         yydestruct (yytoken, &yylval]b4_location_if([, &yylloc])[);
+         yychar = YYEMPTY;
+]b4_location_if([        *++yylerrsp = yylloc;])[
+       }

     }
 
     }
 

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

      token.  */
   goto yyerrlab1;
 
 
      token.  */
   goto yyerrlab1;
 
 

-/*----------------------------------------------------.
-| yyerrlab1 -- error raised explicitly by an action.  |
-`----------------------------------------------------*/
+/*---------------------------------------------------.
+| yyerrorlab -- error raised explicitly by YYERROR.  |
+`---------------------------------------------------*/
+yyerrorlab:
+
+#ifdef __GNUC__
+  /* Pacify GCC when the user code never invokes YYERROR and the label
+     yyerrorlab therefore never appears in user code.  */
+  if (0)
+     goto yyerrorlab;
+#endif
+
+  yyvsp -= yylen;
+  yyssp -= yylen;
+  yystate = *yyssp;
+  ]b4_location_if([yylerrsp = yylsp;
+  *++yylerrsp = yyloc;
+  yylsp -= yylen;
+  ])[goto yyerrlab1;
+
+
+/*-------------------------------------------------------------.
+| yyerrlab1 -- common code for both syntax error and YYERROR.  |
+`-------------------------------------------------------------*/

 yyerrlab1:
   yyerrstatus = 3;     /* Each real token shifted decrements this.  */
 
 yyerrlab1:
   yyerrstatus = 3;     /* Each real token shifted decrements this.  */
 


@@ -1153,9 +1186,8 @@ yyerrlab1:
 
       YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
       yydestruct (yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
 
       YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
       yydestruct (yystos[yystate], yyvsp]b4_location_if([, yylsp])[);

-      yyvsp--;
-      yystate = *--yyssp;
-]b4_location_if([      yylsp--;])[
+      YYPOPSTACK;
+      yystate = *yyssp;

       YY_STACK_PRINT (yyss, yyssp);
     }
 
       YY_STACK_PRINT (yyss, yyssp);
     }
 


@@ -1165,7 +1197,7 @@ yyerrlab1:
   YYDPRINTF ((stderr, "Shifting error token, "));
 
   *++yyvsp = yylval;
   YYDPRINTF ((stderr, "Shifting error token, "));
 
   *++yyvsp = yylval;

-]b4_location_if([  YYLLOC_DEFAULT (yyloc, yylsp, (yylerrsp - yylsp));
+]b4_location_if([  YYLLOC_DEFAULT (yyloc, yylsp, yylerrsp - yylsp);

   *++yylsp = yyloc;])[
 
   yystate = yyn;
   *++yylsp = yyloc;])[
 
   yystate = yyn;


@@ -1209,7 +1241,7 @@ b4_epilogue
 m4_if(b4_defines_flag, 0, [],
 [@output @output_header_name@
 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
 m4_if(b4_defines_flag, 0, [],
 [@output @output_header_name@
 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],

-             [1984, 1989, 1990, 2000, 2001, 2002, 2003])
+             [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])

 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.
 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.