Fix ChangeLog.

[bison.git] / src / output.c

diff --git a/src/output.c b/src/output.c
index a89e77ede198548941e3ad9d812441abbad30577..702f0cb18bf8f95608f8e0e79013272fb1f8be0f 100644 (file)
--- a/src/output.c
+++ b/src/output.c
@@ -1,5 +1,6 @@
 /* Output the generated parsing program for bison,
 /* Output the generated parsing program for bison,

-   Copyright (C) 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002
+   Free Software Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 


@@ -19,343 +20,219 @@
    02111-1307, USA.  */
 
 
    02111-1307, USA.  */
 
 

-/* The parser tables consist of these tables.
-   Starred ones needed only for the semantic parser.
-   Double starred are output only if switches are set.
+/* The parser tables consist of these tables.  Marked ones needed only
+   for the semantic parser.  Double marked are output only if switches
+   are set.

 
 

-   yytranslate = vector mapping yylex's token numbers into bison's token
-   numbers.
+   YYTRANSLATE = vector mapping yylex's token numbers into bison's
+   token numbers.

 
 

-   ** yytname = vector of string-names indexed by bison token number
+   ++ YYTNAME = vector of string-names indexed by bison token number.

 
 

-   ** yytoknum = vector of yylex token numbers corresponding to entries
-   in yytname
+   ++ YYTOKNUM = vector of yylex token numbers corresponding to
+   entries in YYTNAME.

 
 

-   yyrline = vector of line-numbers of all rules.  For yydebug printouts.
+   YYRLINE = vector of line-numbers of all rules.  For yydebug
+   printouts.

 
 

-   yyrhs = vector of items of all rules.
-   This is exactly what ritems contains.  For yydebug and for semantic
-   parser.
+   YYRHS = vector of items of all rules.  This is exactly what RITEMS
+   contains.  For yydebug and for semantic parser.

 
 

-   yyprhs[r] = index in yyrhs of first item for rule r.
+   YYPRHS[R] = index in YYRHS of first item for rule R.

 
 

-   yyr1[r] = symbol number of symbol that rule r derives.
+   YYR1[R] = symbol number of symbol that rule R derives.

 
 

-   yyr2[r] = number of symbols composing right hand side of rule r.
+   YYR2[R] = number of symbols composing right hand side of rule R.

 
 

-   * yystos[s] = the symbol number of the symbol that leads to state s.
+   + YYSTOS[S] = the symbol number of the symbol that leads to state
+   S.

 
 

-   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.
+   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.

 
 

-   yydefgoto[i] = default state to go to after a reduction of a rule that
-   generates variable ntokens + i, except when yytable
-   specifies something else to do.
+   YYDEFGOTO[I] = default state to go to after a reduction of a rule
+   that generates variable NTOKENS + I, except when YYTABLE specifies
+   something else to do.

 
 

-   yypact[s] = index in yytable of the portion describing state s.
-   The lookahead token's type is used to index that portion
-   to find out what to do.
+   YYPACT[S] = index in YYTABLE of the portion describing state S.
+   The lookahead token's type is used to index that portion to find
+   out what to do.

 
 

-   If the value in yytable is positive,
-   we shift the token and go to that state.
+   If the value in YYTABLE is positive, we shift the token and go to
+   that state.

 
    If the value is negative, it is minus a rule number to reduce by.
 
 
    If the value is negative, it is minus a rule number to reduce by.
 

-   If the value is zero, the default action from yydefact[s] is used.
+   If the value is zero, the default action from YYDEFACT[S] is used.

 
 

-   yypgoto[i] = the index in yytable of the portion describing
-   what to do after reducing a rule that derives variable i + ntokens.
-   This portion is indexed by the parser state number, s,
-   as of before the text for this nonterminal was read.
-   The value from yytable is the state to go to if
-   the corresponding value in yycheck is s.
+   YYPGOTO[I] = the index in YYTABLE of the portion describing what to
+   do after reducing a rule that derives variable I + NTOKENS.  This
+   portion is indexed by the parser state number, S, as of before the
+   text for this nonterminal was read.  The value from YYTABLE is the
+   state to go to if the corresponding value in YYCHECK is S.

 
 

-   yytable = a vector filled with portions for different uses,
-   found via yypact and yypgoto.
+   YYTABLE = a vector filled with portions for different uses, found
+   via YYPACT and YYPGOTO.

 
 

-   yycheck = a vector indexed in parallel with yytable.
-   It indicates, in a roundabout way, the bounds of the
-   portion you are trying to examine.
+   YYCHECK = a vector indexed in parallel with YYTABLE.  It indicates,
+   in a roundabout way, the bounds of the portion you are trying to
+   examine.

 
 

-   Suppose that the portion of yytable starts at index p
-   and the index to be examined within the portion is i.
-   Then if yycheck[p+i] != i, i is outside the bounds
-   of what is actually allocated, and the default
-   (from yydefact or yydefgoto) should be used.
-   Otherwise, yytable[p+i] should be used.
+   Suppose that the portion of yytable starts at index P and the index
+   to be examined within the portion is I.  Then if YYCHECK[P+I] != I,
+   I is outside the bounds of what is actually allocated, and the
+   default (from YYDEFACT or YYDEFGOTO) should be used.  Otherwise,
+   YYTABLE[P+I] should be used.

 
 

-   YYFINAL = the state number of the termination state.
-   YYFLAG = most negative short int.  Used to flag ??
-   YYNTBASE = ntokens.
-*/
+   YYFINAL = the state number of the termination state.  YYFLAG = most
+   negative short int.  Used to flag ??  */

 
 #include "system.h"
 
 #include "system.h"

+#include "quotearg.h"
+#include "error.h"

 #include "getargs.h"
 #include "getargs.h"

-#include "alloc.h"

 #include "files.h"
 #include "gram.h"
 #include "files.h"
 #include "gram.h"

-#include "state.h"
+#include "LR0.h"

 #include "complain.h"
 #include "output.h"
 #include "complain.h"
 #include "output.h"

+#include "lalr.h"
+#include "reader.h"
+#include "symtab.h"
+#include "conflicts.h"
+#include "muscle_tab.h"

 
 

-extern void berror PARAMS((const char *));
-
-extern char **tags;
-extern short *user_toknums;
-extern int tokensetsize;
-extern int final_state;
-extern core **state_table;
-extern shifts **shift_table;
-extern errs **err_table;
-extern reductions **reduction_table;
-extern short *accessing_symbol;
-extern unsigned *LA;
-extern short *LAruleno;
-extern short *lookaheads;
-extern char *consistent;
-extern short *goto_map;
-extern short *from_state;
-extern short *to_state;
-
-extern void reader_output_yylsp PARAMS ((FILE *));
+/* From lib/readpipe.h.  */
+FILE *readpipe PARAMS ((const char *, ...));
+
+/* From src/scan-skel.l. */
+int skel_lex PARAMS ((void));
+extern FILE *skel_in;

 
 static int nvectors;
 static int nentries;
 
 static int nvectors;
 static int nentries;

-static short **froms;
-static short **tos;
-static short *tally;
-static short *width;
-static short *actrow;
-static short *state_count;
-static short *order;
-static short *base;
-static short *pos;
-static short *table;
-static short *check;
+static short **froms = NULL;
+static short **tos = NULL;
+static short *tally = NULL;
+static short *width = NULL;
+static short *actrow = NULL;
+static short *state_count = NULL;
+static short *order = NULL;
+static short *base = NULL;
+static short *pos = NULL;
+static short *table = NULL;
+static short *check = NULL;

 static int lowzero;
 static int high;
 
 static int lowzero;
 static int high;
 

+struct obstack muscle_obstack;
+static struct obstack format_obstack;

 
 

+int error_verbose = 0;

 
 

-static inline void
-output_short_table (FILE *out,
-                   const char *table_name,
-                   short *short_table,
-                   short first_value,
-                   short begin, short end)
+/* Returns the number of lines of S.  */
+size_t
+get_lines_number (const char *s)

 {
 {

-  int i, j;
-
-  fprintf (out, "static const short %s[] = {%6d", table_name, first_value);
+  size_t lines = 0;

 
 

-  j = 10;
-  for (i = begin; i < end; i++)
-    {
-      putc (',', out);
+  size_t i;
+  for (i = 0; s[i]; ++i)
+    if (s[i] == '\n')
+      ++lines;

 
 

-      if (j >= 10)
-       {
-         putc ('\n', out);
-         j = 1;
-       }
-      else
-       {
-         j++;
-       }
-
-      fprintf (out, "%6d", short_table[i]);
-    }
-
-  fprintf (out, "\n};\n");
+  return lines;

 }
 
 
 }
 
 

-/*--------------------------------------------------------------.
-| output_headers -- Output constant strings to the beginning of |
-| certain files.                                                |
-`--------------------------------------------------------------*/
-
-#define        GUARDSTR        \
-"\n\
-#include \"%s\"\n\
-extern int yyerror;\n\
-extern int yycost;\n\
-extern char * yymsg;\n\
-extern YYSTYPE yyval;\n\
-\n\
-yyguard(n, yyvsp, yylsp)\n\
-register int n;\n\
-register YYSTYPE *yyvsp;\n\
-register YYLTYPE *yylsp;\n\
-{\n\
-  yyerror = 0;\n\
-  yycost = 0;\n\
-  yymsg = 0;\n\
-  switch (n)\n\
-    {"
-
-#define        ACTSTR          \
-"\n\
-#include \"%s\"\n\
-extern YYSTYPE yyval;\n\
-extern int yychar;\n\
-\n\
-yyaction(n, yyvsp, yylsp)\n\
-register int n;\n\
-register YYSTYPE *yyvsp;\n\
-register YYLTYPE *yylsp;\n\
-{\n\
-  switch (n)\n\
-    {"
+/* FIXME. */

 
 

-#define        ACTSTR_SIMPLE   "\n  switch (yyn) {\n"
-
-void
-output_headers (void)
+static inline void
+output_table_data (struct obstack *oout,
+                  short *table_data,
+                  short first,
+                  int begin,
+                  int end)

 {
 {

-  if (semantic_parser)
-    fprintf (fguard, GUARDSTR, attrsfile);
-
-  if (noparserflag)
-    return;
-
-  fprintf (faction, (semantic_parser ? ACTSTR : ACTSTR_SIMPLE), attrsfile);
-/*  if (semantic_parser)       JF moved this below
-    fprintf(ftable, "#include \"%s\"\n", attrsfile);
-  fprintf(ftable, "#include <stdio.h>\n\n");
-*/
+  int i;
+  int j = 1;

 
 

-  /* Rename certain symbols if -p was specified.  */
-  if (spec_name_prefix)
+  obstack_fgrow1 (oout, "%6d", first);
+  for (i = begin; i < end; ++i)

     {
     {

-      fprintf (ftable, "#define yyparse %sparse\n", spec_name_prefix);
-      fprintf (ftable, "#define yylex %slex\n", spec_name_prefix);
-      fprintf (ftable, "#define yyerror %serror\n", spec_name_prefix);
-      fprintf (ftable, "#define yylval %slval\n", spec_name_prefix);
-      fprintf (ftable, "#define yychar %schar\n", spec_name_prefix);
-      fprintf (ftable, "#define yydebug %sdebug\n", spec_name_prefix);
-      fprintf (ftable, "#define yynerrs %snerrs\n", spec_name_prefix);
+      obstack_1grow (oout, ',');
+      if (j >= 10)
+       {
+         obstack_sgrow (oout, "\n  ");
+         j = 1;
+       }
+      else
+       ++j;
+      obstack_fgrow1 (oout, "%6d", table_data[i]);

     }
     }

+  obstack_1grow (oout, 0);

 }
 
 
 }
 
 

-/*-------------------------------------------------------.
-| Output constant strings to the ends of certain files.  |
-`-------------------------------------------------------*/
-
-void
-output_trailers (void)
-{
-  if (semantic_parser)
-    fprintf (fguard, "\n    }\n}\n");
-
-  fprintf (faction, "\n");
-
-  if (noparserflag)
-    return;
-
-  if (semantic_parser)
-    fprintf (faction, "    }\n");
-  fprintf (faction, "}\n");
-}
-
-
-

 static void
 output_token_translations (void)
 {
 static void
 output_token_translations (void)
 {

-  int i, j;
-/*   short *sp; JF unused */
-
-  if (translations)
-    {
-      fprintf (ftable,
-              "\n#define YYTRANSLATE(x) ((unsigned)(x) <= %d ? yytranslate[x] : %d)\n",
-              max_user_token_number, nsyms);
-
-      if (ntokens < 127)       /* play it very safe; check maximum element value.  */
-       fprintf (ftable, "\nstatic const char yytranslate[] = {     0");
-      else
-       fprintf (ftable, "\nstatic const short yytranslate[] = {     0");
-
-      j = 10;
-      for (i = 1; i <= max_user_token_number; i++)
-       {
-         putc (',', ftable);
-
-         if (j >= 10)
-           {
-             putc ('\n', ftable);
-             j = 1;
-           }
-         else
-           {
-             j++;
-           }
-
-         fprintf (ftable, "%6d", token_translations[i]);
-       }
-
-      fprintf (ftable, "\n};\n");
-    }
-  else
-    {
-      fprintf (ftable, "\n#define YYTRANSLATE(x) (x)\n");
-    }
+  output_table_data (&format_obstack, token_translations,
+                    0, 1, max_user_token_number + 1);
+  muscle_insert ("translate", obstack_finish (&format_obstack));
+  XFREE (token_translations);

 }
 
 
 static void
 output_gram (void)
 {
 }
 
 
 static void
 output_gram (void)
 {

-  int j;
-  short *sp;
-
-  /* With the ordinary parser,
-     yyprhs and yyrhs are needed only for yydebug. */
-  /* With the noparser option, all tables are generated */
-  if (!semantic_parser && !noparserflag)
-    fprintf (ftable, "\n#if YYDEBUG != 0\n");
+  {
+    int i;
+    short *values = XCALLOC (short, nrules + 1);
+    for (i = 0; i < nrules + 1; ++i)
+      values[i] = rules[i].rhs;
+    output_table_data (&format_obstack, values,
+                      0, 1, nrules + 1);
+    XFREE (values);
+  }

 
 

-  output_short_table (ftable, "yyprhs", rrhs,
-                     0, 1, nrules + 1);
+  muscle_insert ("prhs", obstack_finish (&format_obstack));

 
 

-  fprintf (ftable, "\nstatic const short yyrhs[] = {%6d", ritem[0]);
+  {
+    short *yyrhs;
+    int i;

 
 

-  j = 10;
-  for (sp = ritem + 1; *sp; sp++)
-    {
-      putc (',', ftable);
+    yyrhs = XMALLOC (short, nritems);

 
 

-      if (j >= 10)
-       {
-         putc ('\n', ftable);
-         j = 1;
-       }
-      else
-       {
-         j++;
-       }
+    for (i = 1; i < nritems; ++i)
+      yyrhs[i] = ritem[i] >= 0 ? ritem[i] : -1;

 
 

-      if (*sp > 0)
-       fprintf (ftable, "%6d", *sp);
-      else
-       fprintf (ftable, "     0");
-    }
+    output_table_data (&format_obstack, yyrhs,
+                      ritem[0], 1, nritems);
+    muscle_insert ("rhs", obstack_finish (&format_obstack));

 
 

-  fprintf (ftable, "\n};\n");
+    XFREE (yyrhs);
+  }

 
 

-  if (!semantic_parser && !noparserflag)
-    fprintf (ftable, "\n#endif\n");
+#if 0
+  if (!semantic_parser)
+    obstack_sgrow (&table_obstack, "\n#endif\n");
+#endif

 }
 
 
 static void
 output_stos (void)
 {
 }
 
 
 static void
 output_stos (void)
 {

-  output_short_table (ftable, "yystos", accessing_symbol,
-                     0, 1, nstates);
+  int i;
+  short *values = (short *) alloca (sizeof (short) * nstates);
+  for (i = 0; i < nstates; ++i)
+    values[i] = states[i]->accessing_symbol;
+  output_table_data (&format_obstack, values,
+                    0, 1, nstates);
+  muscle_insert ("stos", obstack_finish (&format_obstack));

 }
 
 
 }
 
 


@@ -364,152 +241,81 @@ output_rule_data (void)
 {
   int i;
   int j;
 {
   int i;
   int j;

+  short *short_tab = NULL;

 
 

-  fputs ("\n\
-#if YYDEBUG != 0\n\
-/* YYRLINE[yyn]: source line where rule number YYN was defined. */\n",
-        ftable);
-
-  output_short_table (ftable, "yyrline", rline,
-                     0, 1, nrules + 1);
-
-  fputs ("#endif\n\n", ftable);
-
-  if (toknumflag || noparserflag)
-    {
-      fprintf (ftable, "#define YYNTOKENS %d\n", ntokens);
-      fprintf (ftable, "#define YYNNTS %d\n", nvars);
-      fprintf (ftable, "#define YYNRULES %d\n", nrules);
-      fprintf (ftable, "#define YYNSTATES %d\n", nstates);
-      fprintf (ftable, "#define YYMAXUTOK %d\n\n", max_user_token_number);
-    }
-
-  if (!toknumflag && !noparserflag)
-    fprintf (ftable, "\n#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)\n\n");
-
-  /* Output the table of symbol names.  */
+  {
+    short *values = XCALLOC (short, nrules + 1);
+    for (i = 0; i < nrules + 1; ++i)
+      values[i] = rules[i].line;
+    output_table_data (&format_obstack, values,
+                      0, 1, nrules + 1);
+    muscle_insert ("rline", obstack_finish (&format_obstack));
+    XFREE (values);
+  }

 
 

-  fprintf (ftable,
-          "static const char * const yytname[] = {   \"%s\"", tags[0]);

 
 

-  j = strlen (tags[0]) + 44;
-  for (i = 1; i < nsyms; i++)
-    /* this used to be i<=nsyms, but that output a final "" symbol
-       almost by accident */
+  j = 0;
+  for (i = 0; i < nsyms; i++)

     {
     {

-      char *p;
-      putc (',', ftable);
-      j++;
-
-      if (j > 75)
+      /* Be sure not to use twice the same quotearg slot. */
+      const char *cp =
+       quotearg_n_style (1, c_quoting_style,
+                         quotearg_style (escape_quoting_style, symbols[i]->tag));
+      /* Width of the next token, including the two quotes, the coma
+        and the space.  */
+      int strsize = strlen (cp) + 2;
+
+      if (j + strsize > 75)

        {
        {

-         putc ('\n', ftable);
-         j = 0;
-       }
-
-      putc ('\"', ftable);
-      j++;
-
-      for (p = tags[i]; p && *p; p++)
-       {
-         if (*p == '"' || *p == '\\')
-           {
-             fprintf (ftable, "\\%c", *p);
-             j += 2;
-           }
-         else if (*p == '\n')
-           {
-             fprintf (ftable, "\\n");
-             j += 2;
-           }
-         else if (*p == '\t')
-           {
-             fprintf (ftable, "\\t");
-             j += 2;
-           }
-         else if (*p == '\b')
-           {
-             fprintf (ftable, "\\b");
-             j += 2;
-           }
-         else if (*p < 040 || *p >= 0177)
-           {
-             fprintf (ftable, "\\%03o", *p);
-             j += 4;
-           }
-         else
-           {
-             putc (*p, ftable);
-             j++;
-           }
+         obstack_sgrow (&format_obstack, "\n  ");
+         j = 2;

        }
 
        }
 

-      putc ('\"', ftable);
-      j++;
+      obstack_sgrow (&format_obstack, cp);
+      obstack_sgrow (&format_obstack, ", ");
+      j += strsize;

     }
   /* add a NULL entry to list of tokens */
     }
   /* add a NULL entry to list of tokens */

-  fprintf (ftable, ", NULL\n};\n");
+  obstack_sgrow (&format_obstack, "NULL");

 
 

-  if (!toknumflag && !noparserflag)
-    fprintf (ftable, "#endif\n\n");
+  /* Finish table and store. */
+  obstack_1grow (&format_obstack, 0);
+  muscle_insert ("tname", obstack_finish (&format_obstack));

 
   /* Output YYTOKNUM. */
 
   /* Output YYTOKNUM. */

-  if (toknumflag)
-    {
-      output_short_table (ftable, "yytoknum", user_toknums,
-                         0, 1, ntokens + 1);
-    }
+  {
+    short *values = XCALLOC (short, ntokens + 1);
+    for (i = 0; i < ntokens + 1; ++i)
+      values[i] = symbols[i]->user_token_number;
+    output_table_data (&format_obstack, values,
+                      0, 1, ntokens + 1);
+    muscle_insert ("toknum", obstack_finish (&format_obstack));
+    XFREE (values);
+  }

 
 

-  /* Output YYR1. */
-  fputs ("\
-/* YYR1[YYN]: Symbol number of symbol that rule YYN derives. */\n", ftable);

 
 

-  output_short_table (ftable, "yyr1", rlhs,
-                     0, 1, nrules + 1);
-  FREE (rlhs + 1);
-
-  putc ('\n', ftable);
+  /* Output YYR1. */
+  {
+    short *values = XCALLOC (short, nrules + 1);
+    for (i = 0; i < nrules + 1; ++i)
+      values[i] = rules[i].lhs;
+    output_table_data (&format_obstack, values,
+                      0, 1, nrules + 1);
+    muscle_insert ("r1", obstack_finish (&format_obstack));
+    XFREE (values);
+  }

 
   /* Output YYR2. */
 
   /* Output YYR2. */

-  fputs ("\
-/* YYR2[YYN]: Number of symbols composing right hand side of rule YYN. */\n\
-static const short yyr2[] = {     0", ftable);
-  j = 10;
+  short_tab = XMALLOC (short, nrules + 1);

   for (i = 1; i < nrules; i++)
   for (i = 1; i < nrules; i++)

-    {
-      putc (',', ftable);
-
-      if (j >= 10)
-       {
-         putc ('\n', ftable);
-         j = 1;
-       }
-      else
-       {
-         j++;
-       }
-
-      fprintf (ftable, "%6d", rrhs[i + 1] - rrhs[i] - 1);
-    }
-
-  putc (',', ftable);
-  if (j >= 10)
-    putc ('\n', ftable);
-
-  fprintf (ftable, "%6d\n};\n", nitems - rrhs[nrules] - 1);
-  FREE (rrhs + 1);
+    short_tab[i] = rules[i + 1].rhs - rules[i].rhs - 1;
+  short_tab[nrules] =  nritems - rules[nrules].rhs - 1;
+  output_table_data (&format_obstack, short_tab,
+                    0, 1, nrules + 1);
+  muscle_insert ("r2", obstack_finish (&format_obstack));
+  XFREE (short_tab);

 }
 
 }
 

-
-static void
-output_defines (void)
-{
-  fprintf (ftable, "\n\n#define\tYYFINAL\t\t%d\n", final_state);
-  fprintf (ftable, "#define\tYYFLAG\t\t%d\n", MINSHORT);
-  fprintf (ftable, "#define\tYYNTBASE\t%d\n", ntokens);
-}
-
-

 /*------------------------------------------------------------------.
 | Decide what to do for each type of token if seen as the lookahead |
 | token in specified state.  The value returned is used as the      |
 /*------------------------------------------------------------------.
 | Decide what to do for each type of token if seen as the lookahead |
 | token in specified state.  The value returned is used as the      |


@@ -525,137 +331,84 @@ output_defines (void)
 `------------------------------------------------------------------*/
 
 static int
 `------------------------------------------------------------------*/
 
 static int

-action_row (int state)
+action_row (state_t *state)

 {
   int i;
 {
   int i;

-  int j;
-  int k;
-  int m = 0;
-  int n = 0;
-  int count;
-  int default_rule;
-  int nreds;
-  int max;
-  int rule;
-  int shift_state;
-  int symbol;
-  unsigned mask;
-  unsigned *wordp;
-  reductions *redp;
-  shifts *shiftp;
-  errs *errp;
-  int nodefault = 0;           /* set nonzero to inhibit having any default reduction */
+  int default_rule = 0;
+  reductions *redp = state->reductions;
+  shifts *shiftp = state->shifts;
+  errs *errp = state->errs;
+  /* set nonzero to inhibit having any default reduction */
+  int nodefault = 0;

 
   for (i = 0; i < ntokens; i++)
     actrow[i] = 0;
 
 
   for (i = 0; i < ntokens; i++)
     actrow[i] = 0;
 

-  default_rule = 0;
-  nreds = 0;
-  redp = reduction_table[state];
-
-  if (redp)
+  if (redp->nreds >= 1)

     {
     {

-      nreds = redp->nreds;
-
-      if (nreds >= 1)
-       {
-         /* loop over all the rules available here which require
-            lookahead */
-         m = lookaheads[state];
-         n = lookaheads[state + 1];
-
-         for (i = n - 1; i >= m; i--)
-           {
-             rule = -LAruleno[i];
-             wordp = LA + i * tokensetsize;
-             mask = 1;
-
-             /* and find each token which the rule finds acceptable
-                to come next */
-             for (j = 0; j < ntokens; j++)
-               {
-                 /* and record this rule as the rule to use if that
-                    token follows.  */
-                 if (mask & *wordp)
-                   actrow[j] = rule;
-
-                 mask <<= 1;
-                 if (mask == 0)
-                   {
-                     mask = 1;
-                     wordp++;
-                   }
-               }
-           }
-       }
+      int j;
+      /* loop over all the rules available here which require
+        lookahead */
+      for (i = state->nlookaheads - 1; i >= 0; --i)
+       /* and find each token which the rule finds acceptable
+          to come next */
+       for (j = 0; j < ntokens; j++)
+         /* and record this rule as the rule to use if that
+            token follows.  */
+         if (BITISSET (LA (state->lookaheadsp + i), j))
+           actrow[j] = -LAruleno[state->lookaheadsp + i];

     }
 
     }
 

-  shiftp = shift_table[state];
-

   /* Now see which tokens are allowed for shifts in this state.  For
      them, record the shift as the thing to do.  So shift is preferred
      to reduce.  */
   /* Now see which tokens are allowed for shifts in this state.  For
      them, record the shift as the thing to do.  So shift is preferred
      to reduce.  */

-
-  if (shiftp)
+  for (i = 0; i < shiftp->nshifts; i++)

     {
     {

-      k = shiftp->nshifts;
+      int symbol;
+      int shift_state = shiftp->shifts[i];
+      if (!shift_state)
+       continue;

 
 

-      for (i = 0; i < k; i++)
-       {
-         shift_state = shiftp->shifts[i];
-         if (!shift_state)
-           continue;
-
-         symbol = accessing_symbol[shift_state];
+      symbol = states[shift_state]->accessing_symbol;

 
 

-         if (ISVAR (symbol))
-           break;
+      if (ISVAR (symbol))
+       break;

 
 

-         actrow[symbol] = shift_state;
+      actrow[symbol] = shift_state;

 
 

-         /* Do not use any default reduction if there is a shift for
-            error */
-         if (symbol == error_token_number)
-           nodefault = 1;
-       }
+      /* Do not use any default reduction if there is a shift for
+        error */
+      if (symbol == error_token_number)
+       nodefault = 1;

     }
 
     }
 

-  errp = err_table[state];
-

   /* See which tokens are an explicit error in this state (due to
      %nonassoc).  For them, record MINSHORT as the action.  */
   /* See which tokens are an explicit error in this state (due to
      %nonassoc).  For them, record MINSHORT as the action.  */

-
-  if (errp)
+  for (i = 0; i < errp->nerrs; i++)

     {
     {

-      k = errp->nerrs;
-
-      for (i = 0; i < k; i++)
-       {
-         symbol = errp->errs[i];
-         actrow[symbol] = MINSHORT;
-       }
+      int symbol = errp->errs[i];
+      actrow[symbol] = MINSHORT;

     }
 
   /* Now find the most common reduction and make it the default action
      for this state.  */
 
     }
 
   /* Now find the most common reduction and make it the default action
      for this state.  */
 

-  if (nreds >= 1 && !nodefault)
+  if (redp->nreds >= 1 && !nodefault)

     {
     {

-      if (consistent[state])
+      if (state->consistent)

        default_rule = redp->rules[0];
       else
        {
        default_rule = redp->rules[0];
       else
        {

-         max = 0;
-         for (i = m; i < n; i++)
+         int max = 0;
+         for (i = 0; i < state->nlookaheads; i++)

            {
            {

-             count = 0;
-             rule = -LAruleno[i];
+             int count = 0;
+             int rule = -LAruleno[state->lookaheadsp + i];
+             int j;

 
              for (j = 0; j < ntokens; j++)
 
              for (j = 0; j < ntokens; j++)

-               {
-                 if (actrow[j] == rule)
-                   count++;
-               }
+               if (actrow[j] == rule)
+                 count++;

 
              if (count > max)
                {
 
              if (count > max)
                {


@@ -669,11 +422,10 @@ action_row (int state)
 
          if (max > 0)
            {
 
          if (max > 0)
            {

+             int j;

              for (j = 0; j < ntokens; j++)
              for (j = 0; j < ntokens; j++)

-               {
-                 if (actrow[j] == default_rule)
-                   actrow[j] = 0;
-               }
+               if (actrow[j] == default_rule)
+                 actrow[j] = 0;

 
              default_rule = -default_rule;
            }
 
              default_rule = -default_rule;
            }


@@ -684,11 +436,9 @@ action_row (int state)
      So replace any action which says "error" with "use default".  */
 
   if (default_rule == 0)
      So replace any action which says "error" with "use default".  */
 
   if (default_rule == 0)

-    for (j = 0; j < ntokens; j++)
-      {
-       if (actrow[j] == MINSHORT)
-         actrow[j] = 0;
-      }
+    for (i = 0; i < ntokens; i++)
+      if (actrow[i] == MINSHORT)
+       actrow[i] = 0;

 
   return default_rule;
 }
 
   return default_rule;
 }


@@ -705,25 +455,21 @@ save_row (int state)
 
   count = 0;
   for (i = 0; i < ntokens; i++)
 
   count = 0;
   for (i = 0; i < ntokens; i++)

-    {
-      if (actrow[i] != 0)
-       count++;
-    }
+    if (actrow[i] != 0)
+      count++;

 
   if (count == 0)
     return;
 
 
   if (count == 0)
     return;
 

-  froms[state] = sp1 = sp = NEW2 (count, short);
-  tos[state] = sp2 = NEW2 (count, short);
+  froms[state] = sp1 = sp = XCALLOC (short, count);
+  tos[state] = sp2 = XCALLOC (short, count);

 
   for (i = 0; i < ntokens; i++)
 
   for (i = 0; i < ntokens; i++)

-    {
-      if (actrow[i] != 0)
-       {
-         *sp1++ = i;
-         *sp2++ = actrow[i];
-       }
-    }
+    if (actrow[i] != 0)
+      {
+       *sp1++ = i;
+       *sp2++ = actrow[i];
+      }

 
   tally[state] = count;
   width[state] = sp1[-1] - sp[0] + 1;
 
   tally[state] = count;
   width[state] = sp1[-1] - sp[0] + 1;


@@ -734,117 +480,158 @@ save_row (int state)
 | Figure out the actions for the specified state, indexed by        |
 | lookahead token type.                                             |
 |                                                                   |
 | Figure out the actions for the specified state, indexed by        |
 | lookahead token type.                                             |
 |                                                                   |

-| The yydefact table is output now.  The detailed info is saved for |
-| putting into yytable later.                                       |
+| The YYDEFACT table is output now.  The detailed info is saved for |
+| putting into YYTABLE later.                                       |

 `------------------------------------------------------------------*/
 
 static void
 token_actions (void)
 {
   int i;
 `------------------------------------------------------------------*/
 
 static void
 token_actions (void)
 {
   int i;

-  int j;
-  int k;
-
-  actrow = NEW2 (ntokens, short);
+  short *yydefact = XCALLOC (short, nstates);

 
 

-  k = action_row (0);
-  fprintf (ftable, "\nstatic const short yydefact[] = {%6d", k);
-  save_row (0);
-
-  j = 10;
-  for (i = 1; i < nstates; i++)
+  actrow = XCALLOC (short, ntokens);
+  for (i = 0; i < nstates; ++i)

     {
     {

-      putc (',', ftable);
-
-      if (j >= 10)
-       {
-         putc ('\n', ftable);
-         j = 1;
-       }
-      else
-       {
-         j++;
-       }
-
-      k = action_row (i);
-      fprintf (ftable, "%6d", k);
+      yydefact[i] = action_row (states[i]);

       save_row (i);
     }
 
       save_row (i);
     }
 

-  fprintf (ftable, "\n};\n");
-  FREE (actrow);
+  output_table_data (&format_obstack, yydefact,
+                    yydefact[0], 1, nstates);
+  muscle_insert ("defact", obstack_finish (&format_obstack));
+
+  XFREE (actrow);
+  XFREE (yydefact);

 }
 
 
 }
 
 

-static void
-free_shifts (void)
-{
-  shifts *sp, *sptmp;  /* JF derefrenced freed ptr */
-
-  FREE (shift_table);
+/*-----------------------------.
+| Output the actions to OOUT.  |
+`-----------------------------*/

 
 

-  for (sp = first_shift; sp; sp = sptmp)
-    {
-      sptmp = sp->next;
-      FREE (sp);
-    }
+void
+actions_output (FILE *out)
+{
+  int rule;
+  for (rule = 1; rule < nrules + 1; ++rule)
+    if (rules[rule].action)
+      {
+       fprintf (out, "  case %d:\n", rule);
+
+       if (!no_lines_flag)
+         fprintf (out, muscle_find ("linef"),
+                  rules[rule].action_line,
+                  quotearg_style (c_quoting_style,
+                                  muscle_find ("filename")));
+       /* As a Bison extension, add the ending semicolon.  Since some
+          Yacc don't do that, help people using bison as a Yacc
+          finding their missing semicolons.  */
+       fprintf (out, "{ %s%s }\n    break;\n\n",
+                rules[rule].action,
+                yacc_flag ? ";" : "");
+      }

 }
 
 
 }
 
 

-static void
-free_reductions (void)
+/*----------------------------.
+| Output the guards to OOUT.  |
+`----------------------------*/
+
+void
+guards_output (FILE *out)

 {
 {

-  reductions *rp, *rptmp;      /* JF fixed freed ptr */
+  int rule;
+  for (rule = 1; rule < nrules + 1; ++rule)
+    if (rules[rule].guard)
+      {
+       fprintf (out, "  case %d:\n", rule);
+
+       if (!no_lines_flag)
+         fprintf (out, muscle_find ("linef"),
+                  rules[rule].guard_line,
+                  quotearg_style (c_quoting_style,
+                                  muscle_find ("filename")));
+       fprintf (out, "{ %s; }\n    break;\n\n",
+                rules[rule].guard);
+      }
+}
+

 
 

-  FREE (reduction_table);
+/*---------------------------------------.
+| Output the tokens definition to OOUT.  |
+`---------------------------------------*/

 
 

-  for (rp = first_reduction; rp; rp = rptmp)
+void
+token_definitions_output (FILE *out)
+{
+  int i;
+  for (i = 0; i < ntokens; ++i)

     {
     {

-      rptmp = rp->next;
-      FREE (rp);
+      bucket *symbol = symbols[i];
+      int number = symbol->user_token_number;
+
+      if (number == SALIAS)
+       continue;
+      /* Skip error token.  */
+      if (symbol->value == error_token_number)
+       continue;
+      if (symbol->tag[0] == '\'')
+       continue;               /* skip literal character */
+      if (symbol->tag[0] == '\"')
+       {
+         /* use literal string only if given a symbol with an alias */
+         if (symbol->alias)
+           symbol = symbol->alias;
+         else
+           continue;
+       }
+
+      /* Don't #define nonliteral tokens whose names contain periods
+        or '$' (as does the default value of the EOF token).  */
+      if (strchr (symbol->tag, '.') || strchr (symbol->tag, '$'))
+       continue;
+
+      fprintf (out, "# define %s\t%d\n",
+              symbol->tag, number);
+      if (semantic_parser)
+       /* FIXME: This is probably wrong, and should be just as
+          above. --akim.  */
+       fprintf (out, "# define T%s\t%d\n", symbol->tag, symbol->value);

     }
 }
 
 
     }
 }
 
 

-

 static void
 save_column (int symbol, int default_state)
 {
   int i;
 static void
 save_column (int symbol, int default_state)
 {
   int i;

-  int m;
-  int n;

   short *sp;
   short *sp1;
   short *sp2;
   int count;
   short *sp;
   short *sp1;
   short *sp2;
   int count;

-  int symno;
+  int symno = symbol - ntokens + nstates;

 
 

-  m = goto_map[symbol];
-  n = goto_map[symbol + 1];
+  short begin = goto_map[symbol];
+  short end = goto_map[symbol + 1];

 
   count = 0;
 
   count = 0;

-  for (i = m; i < n; i++)
-    {
-      if (to_state[i] != default_state)
-       count++;
-    }
+  for (i = begin; i < end; i++)
+    if (to_state[i] != default_state)
+      count++;

 
   if (count == 0)
     return;
 
 
   if (count == 0)
     return;
 

-  symno = symbol - ntokens + nstates;
-
-  froms[symno] = sp1 = sp = NEW2 (count, short);
-  tos[symno] = sp2 = NEW2 (count, short);
+  froms[symno] = sp1 = sp = XCALLOC (short, count);
+  tos[symno] = sp2 = XCALLOC (short, count);

 
 

-  for (i = m; i < n; i++)
-    {
-      if (to_state[i] != default_state)
-       {
-         *sp1++ = from_state[i];
-         *sp2++ = to_state[i];
-       }
-    }
+  for (i = begin; i < end; i++)
+    if (to_state[i] != default_state)
+      {
+       *sp1++ = from_state[i];
+       *sp2++ = to_state[i];
+      }

 
   tally[symno] = count;
   width[symno] = sp1[-1] - sp[0] + 1;
 
   tally[symno] = count;
   width[symno] = sp1[-1] - sp[0] + 1;


@@ -854,13 +641,10 @@ static int
 default_goto (int symbol)
 {
   int i;
 default_goto (int symbol)
 {
   int i;

-  int m;
-  int n;
-  int default_state;
-  int max;
-
-  m = goto_map[symbol];
-  n = goto_map[symbol + 1];
+  int m = goto_map[symbol];
+  int n = goto_map[symbol + 1];
+  int default_state = -1;
+  int max = 0;

 
   if (m == n)
     return -1;
 
   if (m == n)
     return -1;


@@ -871,17 +655,12 @@ default_goto (int symbol)
   for (i = m; i < n; i++)
     state_count[to_state[i]]++;
 
   for (i = m; i < n; i++)
     state_count[to_state[i]]++;
 

-  max = 0;
-  default_state = -1;
-

   for (i = 0; i < nstates; i++)
   for (i = 0; i < nstates; i++)

-    {
-      if (state_count[i] > max)
-       {
-         max = state_count[i];
-         default_state = i;
-       }
-    }
+    if (state_count[i] > max)
+      {
+       max = state_count[i];
+       default_state = i;
+      }

 
   return default_state;
 }
 
   return default_state;
 }


@@ -899,36 +678,23 @@ default_goto (int symbol)
 static void
 goto_actions (void)
 {
 static void
 goto_actions (void)
 {

-  int i, j, k;
-
-  state_count = NEW2 (nstates, short);
-
-  k = default_goto (ntokens);
-  fprintf (ftable, "\nstatic const short yydefgoto[] = {%6d", k);
-  save_column (ntokens, k);
+  int i;
+  short *yydefgoto = XMALLOC (short, nsyms - ntokens);

 
 

-  j = 10;
-  for (i = ntokens + 1; i < nsyms; i++)
+  state_count = XCALLOC (short, nstates);
+  for (i = ntokens; i < nsyms; ++i)

     {
     {

-      putc (',', ftable);
-
-      if (j >= 10)
-       {
-         putc ('\n', ftable);
-         j = 1;
-       }
-      else
-       {
-         j++;
-       }
-
-      k = default_goto (i);
-      fprintf (ftable, "%6d", k);
-      save_column (i, k);
+      int default_state = default_goto (i);
+      save_column (i, default_state);
+      yydefgoto[i - ntokens] = default_state;

     }
 
     }
 

-  fprintf (ftable, "\n};\n");
-  FREE (state_count);
+  output_table_data (&format_obstack, yydefgoto,
+                    yydefgoto[0], 1, nsyms - ntokens);
+  muscle_insert ("defgoto", obstack_finish (&format_obstack));
+
+  XFREE (state_count);
+  XFREE (yydefgoto);

 }
 
 
 }
 
 


@@ -939,50 +705,41 @@ static void
 sort_actions (void)
 {
   int i;
 sort_actions (void)
 {
   int i;

-  int j;
-  int k;
-  int t;
-  int w;

 
 

-  order = NEW2 (nvectors, short);
+  order = XCALLOC (short, nvectors);

   nentries = 0;
 
   for (i = 0; i < nvectors; i++)
   nentries = 0;
 
   for (i = 0; i < nvectors; i++)

-    {
-      if (tally[i] > 0)
-       {
-         t = tally[i];
-         w = width[i];
-         j = nentries - 1;
+    if (tally[i] > 0)
+      {
+       int k;
+       int t = tally[i];
+       int w = width[i];
+       int j = nentries - 1;

 
 

-         while (j >= 0 && (width[order[j]] < w))
-           j--;
+       while (j >= 0 && (width[order[j]] < w))
+         j--;

 
 

-         while (j >= 0 && (width[order[j]] == w) && (tally[order[j]] < t))
-           j--;
+       while (j >= 0 && (width[order[j]] == w) && (tally[order[j]] < t))
+         j--;

 
 

-         for (k = nentries - 1; k > j; k--)
-           order[k + 1] = order[k];
+       for (k = nentries - 1; k > j; k--)
+         order[k + 1] = order[k];

 
 

-         order[j + 1] = i;
-         nentries++;
-       }
-    }
+       order[j + 1] = i;
+       nentries++;
+      }

 }
 
 
 static int
 matching_state (int vector)
 {
 }
 
 
 static int
 matching_state (int vector)
 {

-  int i;
-  int j;
-  int k;
+  int i = order[vector];

   int t;
   int w;
   int t;
   int w;

-  int match;

   int prev;
 
   int prev;
 

-  i = order[vector];

   if (i >= nstates)
     return -1;
 
   if (i >= nstates)
     return -1;
 


@@ -991,16 +748,16 @@ matching_state (int vector)
 
   for (prev = vector - 1; prev >= 0; prev--)
     {
 
   for (prev = vector - 1; prev >= 0; prev--)
     {

-      j = order[prev];
+      int j = order[prev];
+      int k;
+      int match = 1;
+

       if (width[j] != w || tally[j] != t)
        return -1;
 
       if (width[j] != w || tally[j] != t)
        return -1;
 

-      match = 1;

       for (k = 0; match && k < t; k++)
       for (k = 0; match && k < t; k++)

-       {
-         if (tos[j][k] != tos[i][k] || froms[j][k] != froms[i][k])
-           match = 0;
-       }
+       if (tos[j][k] != tos[i][k] || froms[j][k] != froms[i][k])
+         match = 0;

 
       if (match)
        return j;
 
       if (match)
        return j;


@@ -1013,27 +770,19 @@ matching_state (int vector)
 static int
 pack_vector (int vector)
 {
 static int
 pack_vector (int vector)
 {

-  int i;
+  int i = order[vector];

   int j;
   int j;

-  int k;
-  int t;
+  int t = tally[i];

   int loc = 0;
   int loc = 0;

-  int ok;
-  short *from;
-  short *to;
-
-  i = order[vector];
-  t = tally[i];
+  short *from = froms[i];
+  short *to = tos[i];

 
 

-  if (t == 0)
-    berror ("pack_vector");
-
-  from = froms[i];
-  to = tos[i];
+  assert (t);

 
   for (j = lowzero - from[0]; j < MAXTABLE; j++)
     {
 
   for (j = lowzero - from[0]; j < MAXTABLE; j++)
     {

-      ok = 1;
+      int k;
+      int ok = 1;

 
       for (k = 0; ok && k < t; k++)
        {
 
       for (k = 0; ok && k < t; k++)
        {


@@ -1046,10 +795,8 @@ pack_vector (int vector)
        }
 
       for (k = 0; ok && k < vector; k++)
        }
 
       for (k = 0; ok && k < vector; k++)

-       {
-         if (pos[k] == j)
-           ok = 0;
-       }
+       if (pos[k] == j)
+         ok = 0;

 
       if (ok)
        {
 
       if (ok)
        {


@@ -1069,9 +816,9 @@ pack_vector (int vector)
          return j;
        }
     }
          return j;
        }
     }

-
-  berror ("pack_vector");
-  return 0;                    /* JF keep lint happy */
+#define pack_vector_succeeded 0
+  assert (pack_vector_succeeded);
+  return 0;

 }
 
 
 }
 
 


@@ -1082,10 +829,10 @@ pack_table (void)
   int place;
   int state;
 
   int place;
   int state;
 

-  base = NEW2 (nvectors, short);
-  pos = NEW2 (nentries, short);
-  table = NEW2 (MAXTABLE, short);
-  check = NEW2 (MAXTABLE, short);
+  base = XCALLOC (short, nvectors);
+  pos = XCALLOC (short, nentries);
+  table = XCALLOC (short, MAXTABLE);
+  check = XCALLOC (short, MAXTABLE);

 
   lowzero = 0;
   high = 0;
 
   lowzero = 0;
   high = 0;


@@ -1111,15 +858,13 @@ pack_table (void)
 
   for (i = 0; i < nvectors; i++)
     {
 
   for (i = 0; i < nvectors; i++)
     {

-      if (froms[i])
-       FREE (froms[i]);
-      if (tos[i])
-       FREE (tos[i]);
+      XFREE (froms[i]);
+      XFREE (tos[i]);

     }
 
     }
 

-  FREE (froms);
-  FREE (tos);
-  FREE (pos);
+  XFREE (froms);
+  XFREE (tos);
+  XFREE (pos);

 }
 
 /* the following functions output yytable, yycheck
 }
 
 /* the following functions output yytable, yycheck


@@ -1128,34 +873,37 @@ pack_table (void)
 static void
 output_base (void)
 {
 static void
 output_base (void)
 {

-  output_short_table (ftable, "yypact", base,
-                     base[0], 1, nstates);
-
-  putc ('\n', ftable);
+  /* Output pact. */
+  output_table_data (&format_obstack, base,
+                    base[0], 1, nstates);
+  muscle_insert ("pact", obstack_finish (&format_obstack));

 
 

-  output_short_table (ftable, "yypgoto", base,
-                     base[nstates], nstates + 1, nvectors);
+  /* Output pgoto. */
+  output_table_data (&format_obstack, base,
+                    base[nstates], nstates + 1, nvectors);
+  muscle_insert ("pgoto", obstack_finish (&format_obstack));

 
 

-  FREE (base);
+  XFREE (base);

 }
 
 
 static void
 output_table (void)
 {
 }
 
 
 static void
 output_table (void)
 {

-  fprintf (ftable, "\n\n#define\tYYLAST\t\t%d\n\n\n", high);
-  output_short_table (ftable, "yytable", table,
-                     table[0], 1, high + 1);
-  FREE (table);
+  output_table_data (&format_obstack, table,
+                    table[0], 1, high + 1);
+  muscle_insert ("table", obstack_finish (&format_obstack));
+  XFREE (table);

 }
 
 
 static void
 output_check (void)
 {
 }
 
 
 static void
 output_check (void)
 {

-  output_short_table (ftable, "yycheck", check,
-                     check[0], 1, high + 1);
-  FREE (check);
+  output_table_data (&format_obstack, check,
+                    check[0], 1, high + 1);
+  muscle_insert ("check", obstack_finish (&format_obstack));
+  XFREE (check);

 }
 
 /* compute and output yydefact, yydefgoto, yypact, yypgoto, yytable
 }
 
 /* compute and output yydefact, yydefgoto, yypact, yypgoto, yytable


@@ -1164,146 +912,193 @@ output_check (void)
 static void
 output_actions (void)
 {
 static void
 output_actions (void)
 {

+  int i;

   nvectors = nstates + nvars;
 
   nvectors = nstates + nvars;
 

-  froms = NEW2 (nvectors, short *);
-  tos = NEW2 (nvectors, short *);
-  tally = NEW2 (nvectors, short);
-  width = NEW2 (nvectors, short);
+  froms = XCALLOC (short *, nvectors);
+  tos = XCALLOC (short *, nvectors);
+  tally = XCALLOC (short, nvectors);
+  width = XCALLOC (short, nvectors);

 
   token_actions ();
 
   token_actions ();

-  free_shifts ();
-  free_reductions ();
-  FREE (lookaheads);
-  FREE (LA);
-  FREE (LAruleno);
-  FREE (accessing_symbol);
+  XFREE (LA);
+  XFREE (LAruleno);

 
   goto_actions ();
 
   goto_actions ();

-  FREE (goto_map + ntokens);
-  FREE (from_state);
-  FREE (to_state);
+  XFREE (goto_map + ntokens);
+  XFREE (from_state);
+  XFREE (to_state);

 
   sort_actions ();
   pack_table ();
 
   sort_actions ();
   pack_table ();

-  putc ('\n', ftable);
+

   output_base ();
   output_table ();
   output_base ();
   output_table ();

-  putc ('\n', ftable);
+

   output_check ();
   output_check ();

+
+  for (i = 0; i < nstates; ++i)
+    {
+      free (states[i]->shifts);
+      XFREE (states[i]->reductions);
+      free (states[i]->errs);
+      free (states[i]);
+    }
+  XFREE (states);

 }
 
 }
 

-/* copy the parser code into the ftable file at the end.  */
+\f
+/*---------------------------.
+| Call the skeleton parser.  |
+`---------------------------*/

 
 static void
 
 static void

-output_parser (void)
+output_skeleton (void)

 {
 {

-  int c;
-#ifdef DONTDEF
-  FILE *fpars;
-#else
-#define fpars fparser
-#endif
-
-  if (pure_parser)
-    fprintf (ftable, "#define YYPURE 1\n\n");
-
-#ifdef DONTDEF                 /* JF no longer needed 'cuz open_extra_files changes the
-                                  currently open parser from bison.simple to bison.hairy */
-  if (semantic_parser)
-    fpars = fparser;
-  else
-    fpars = fparser1;
-#endif
-
-  /* Loop over lines in the standard parser file.  */
-
-  while (1)
+  /* Find the right skeleton file.  */
+  if (!skeleton)

     {
     {

-      int write_line = 1;
-
-      c = getc (fpars);
-
-      /* See if the line starts with `#line.
-         If so, set write_line to 0.  */
-      if (nolinesflag)
-       if (c == '#')
-         {
-           c = getc (fpars);
-           if (c == 'l')
-             {
-               c = getc (fpars);
-               if (c == 'i')
-                 {
-                   c = getc (fpars);
-                   if (c == 'n')
-                     {
-                       c = getc (fpars);
-                       if (c == 'e')
-                         write_line = 0;
-                       else
-                         fprintf (ftable, "#lin");
-                     }
-                   else
-                     fprintf (ftable, "#li");
-                 }
-               else
-                 fprintf (ftable, "#l");
-             }
-           else
-             fprintf (ftable, "#");
-         }
-
-      /* now write out the line... */
-      for (; c != '\n' && c != EOF; c = getc (fpars))
-       if (write_line)
-         {
-           if (c == '$')
-             {
-               /* `$' in the parser file indicates where to put the actions.
-                  Copy them in at this point.  */
-               rewind (faction);
-               for (c = getc (faction); c != EOF; c = getc (faction))
-                 putc (c, ftable);
-             }
-           else
-             putc (c, ftable);
-         }
-      if (c == EOF)
-       break;
-      putc (c, ftable);
+      if (semantic_parser)
+       skeleton = "bison.hairy";
+      else
+       skeleton = "bison.simple";

     }
     }

+
+  /* Parse the skeleton file and output the needed parsers.  */
+  muscle_insert ("skeleton", skeleton);
+
+  /* Store the definition of all the muscles. */
+  {
+    FILE *muscles_m4 = xfopen ("/tmp/muscles.m4", "w");
+    /* There are no comments, especially not `#': we do want M4 expansion
+       after `#': think of CPP macros!  */
+    fprintf (muscles_m4, "m4_changecom()\n");
+    fprintf (muscles_m4, "m4_init()\n");
+
+    fprintf (muscles_m4, "m4_define([b4_actions], \n[[");
+    actions_output (muscles_m4);
+    fprintf (muscles_m4, "]])\n\n");
+
+    fprintf (muscles_m4, "m4_define([b4_guards], \n[[");
+    guards_output (muscles_m4);
+    fprintf (muscles_m4, "]])\n\n");
+
+    fprintf (muscles_m4, "m4_define([b4_tokendef], \n[[");
+    token_definitions_output (muscles_m4);
+    fprintf (muscles_m4, "]])\n\n");
+
+    muscles_m4_output (muscles_m4);
+
+    fprintf (muscles_m4, "m4_wrap([m4_divert_pop(0)])\n");
+    fprintf (muscles_m4, "m4_divert_push(0)dnl\n");
+    xfclose (muscles_m4);
+  }
+
+  /* Invoke m4 on the definition of the muscles, and the skeleton. */
+  {
+    const char *bison_pkgdatadir = getenv ("BISON_PKGDATADIR");
+    if (!bison_pkgdatadir)
+      bison_pkgdatadir = PKGDATADIR;
+    skel_in = readpipe ("m4",
+                       "-I",
+                       bison_pkgdatadir,
+                       "m4sugar/m4sugar.m4",
+                       "/tmp/muscles.m4",
+                       skeleton,
+                       NULL);
+    if (!skel_in)
+      error (EXIT_FAILURE, errno, "cannot run m4");
+    skel_lex ();
+  }

 }
 
 static void
 }
 
 static void

-output_program (void)
+prepare (void)

 {
 {

-  int c;
-
-  if (!nolinesflag)
-    fprintf (ftable, "#line %d \"%s\"\n", lineno, infile);
-
-  c = getc (finput);
-  while (c != EOF)
-    {
-      putc (c, ftable);
-      c = getc (finput);
-    }
+  MUSCLE_INSERT_INT ("last", high);
+  MUSCLE_INSERT_INT ("flag", MINSHORT);
+  MUSCLE_INSERT_INT ("pure", pure_parser);
+  MUSCLE_INSERT_INT ("nsym", nsyms);
+  MUSCLE_INSERT_INT ("debug", debug_flag);
+  MUSCLE_INSERT_INT ("final", final_state);
+  MUSCLE_INSERT_INT ("maxtok", max_user_token_number);
+  MUSCLE_INSERT_INT ("error_verbose", error_verbose);
+  MUSCLE_INSERT_STRING ("prefix", spec_name_prefix ? spec_name_prefix : "yy");
+
+  /* FIXME: This is wrong: the muscles should decide whether they hold
+     a copy or not, but the situation is too obscure currently.  */
+  MUSCLE_INSERT_STRING ("output_infix", output_infix ? output_infix : "");
+  MUSCLE_INSERT_STRING ("output_prefix", short_base_name);
+  MUSCLE_INSERT_STRING ("output_parser_name", parser_file_name);
+  MUSCLE_INSERT_STRING ("output_header_name", spec_defines_file);
+
+  MUSCLE_INSERT_INT ("nnts", nvars);
+  MUSCLE_INSERT_INT ("nrules", nrules);
+  MUSCLE_INSERT_INT ("nstates", nstates);
+  MUSCLE_INSERT_INT ("ntokens", ntokens);
+
+  MUSCLE_INSERT_INT ("locations_flag", locations_flag);
+  MUSCLE_INSERT_INT ("defines_flag", defines_flag);

 }
 
 }
 

+/*-------------------------.
+| Output the header file.  |
+`-------------------------*/

 
 static void
 
 static void

-free_itemsets (void)
+header_output (void)

 {
 {

-  core *cp, *cptmp;
-
-  FREE (state_table);
+  FILE *out = xfopen (spec_defines_file, "w");
+  char *macro_name = compute_header_macro ();
+
+  fprintf (out, "#ifndef %s\n", macro_name);
+  fprintf (out, "# define %s\n\n", macro_name);
+
+  token_definitions_output (out);
+  fprintf (out, "\
+#ifndef YYSTYPE\n\
+typedef %s
+yystype;\n\
+# define YYSTYPE yystype\n\
+#endif\n",
+                   muscle_find ("stype"));
+
+  if (!pure_parser)
+    fprintf (out, "\nextern YYSTYPE %slval;\n",
+            spec_name_prefix ? spec_name_prefix : "yy");
+
+  if (locations_flag)
+    {
+      fputs ("\n\n", out);
+      fprintf (out, "\
+#ifndef YYLTYPE\n\
+typedef struct yyltype\n\
+{\n\
+  int first_line;\n\
+  int first_column;\n\
+  int last_line;\n\
+  int last_column;\n\
+} yyltype;\n\
+# define YYLTYPE yyltype\n\
+#endif\n");
+      if (!pure_parser)
+       fprintf (out, "\nextern YYLTYPE %slloc;\n",
+                spec_name_prefix ? spec_name_prefix : "yy");
+    }

 
 

-  for (cp = first_state; cp; cp = cptmp)
+  if (semantic_parser)

     {
     {

-      cptmp = cp->next;
-      FREE (cp);
+      int i;
+
+      for (i = ntokens; i < nsyms; i++)
+       /* don't make these for dummy nonterminals made by gensym.  */
+       if (*symbols[i]->tag != '@')
+         fprintf (out, "# define NT%s\t%d\n", symbols[i]->tag, i);

     }
     }

+
+  fprintf (out, "\n#endif /* not %s */\n", macro_name);
+  free (macro_name);
+  xfclose (out);

 }
 
 
 }
 
 


@@ -1314,52 +1109,33 @@ free_itemsets (void)
 void
 output (void)
 {
 void
 output (void)
 {

-  int c;
-
-  /* output_token_defines(ftable);      / * JF put out token defines FIRST */
-  if (!semantic_parser)                /* JF Put out other stuff */
-    {
-      rewind (fattrs);
-      while ((c = getc (fattrs)) != EOF)
-       putc (c, ftable);
-    }
-  reader_output_yylsp (ftable);
-  if (debugflag)
-    fputs ("\
-#ifndef YYDEBUG\n\
-#define YYDEBUG 1\n\
-#endif\n\
-\n",
-          ftable);
+  obstack_init (&format_obstack);

 
 

-  if (semantic_parser)
-    fprintf (ftable, "#include \"%s\"\n", attrsfile);
-
-  if (!noparserflag)
-    fprintf (ftable, "#include <stdio.h>\n\n");
-
-  /* Make "const" do nothing if not in ANSI C.  */
-  fputs ("\
-#ifndef __cplusplus\n\
-# ifndef __STDC__\n\
-#  define const\n\
-# endif\n\
-#endif\n\
-\n",
-        ftable);
-
-  free_itemsets ();
-  output_defines ();

   output_token_translations ();
   output_token_translations ();

-/*   if (semantic_parser) */
-  /* This is now unconditional because debugging printouts can use it.  */

   output_gram ();
   output_gram ();

-  FREE (ritem);
+
+  XFREE (ritem);

   if (semantic_parser)
     output_stos ();
   output_rule_data ();
   output_actions ();
   if (semantic_parser)
     output_stos ();
   output_rule_data ();
   output_actions ();

-  if (!noparserflag)
-    output_parser ();
-  output_program ();
+
+  prepare ();
+  /* Copy definitions in directive.  */
+  obstack_1grow (&attrs_obstack, 0);
+  muscle_insert ("prologue", obstack_finish (&attrs_obstack));
+
+  /* Process the selected skeleton file.  */
+  output_skeleton ();
+
+  /* Output the header if needed. */
+
+  if (0)
+    header_output ();
+
+  free (rules + 1);
+  obstack_free (&muscle_obstack, NULL);
+  obstack_free (&format_obstack, NULL);
+  obstack_free (&action_obstack, NULL);
+  obstack_free (&attrs_obstack, NULL);

 }
 }