Update.

[bison.git] / src / reader.c

diff --git a/src/reader.c b/src/reader.c
index bd13e044e70baf9c8bee222c1a64760932edbd1a..5abb46edaeb3b7f3fb8bcf819766edc3b1164fe8 100644 (file)
--- a/src/reader.c
+++ b/src/reader.c
@@ -1,5 +1,5 @@
 /* Input parser for bison
 /* Input parser for bison

-   Copyright (C) 1984, 1986, 1989, 1992, 1998, 2000
+   Copyright 1984, 1986, 1989, 1992, 1998, 2000, 2001

    Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
    Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.


@@ -21,18 +21,20 @@
 
 
 #include "system.h"
 
 
 #include "system.h"

+#include "obstack.h"
+#include "quotearg.h"
+#include "quote.h"

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

-#include "xalloc.h"

 #include "symtab.h"
 #include "symtab.h"

+#include "options.h"

 #include "lex.h"
 #include "gram.h"
 #include "complain.h"
 #include "output.h"
 #include "reader.h"
 #include "conflicts.h"
 #include "lex.h"
 #include "gram.h"
 #include "complain.h"
 #include "output.h"
 #include "reader.h"
 #include "conflicts.h"

-
-extern char *printable_version PARAMS ((int));
+#include "muscle_tab.h"

 
 /* Number of slots allocated (but not necessarily used yet) in `rline'  */
 static int rline_allocated;
 
 /* Number of slots allocated (but not necessarily used yet) in `rline'  */
 static int rline_allocated;


@@ -62,14 +64,8 @@ static int typed;
 /* Incremented for each %left, %right or %nonassoc seen */
 static int lastprec;
 
 /* Incremented for each %left, %right or %nonassoc seen */
 static int lastprec;
 

-/* Incremented for each generated symbol */
-static int gensym_count;
-

 static bucket *errtoken;
 static bucket *undeftoken;
 static bucket *errtoken;
 static bucket *undeftoken;

-
-/* Nonzero if any action or guard uses the @n construct.  */
-static int yylsp_needed;

 \f
 
 /*===================\
 \f
 
 /*===================\


@@ -121,17 +117,53 @@ read_signed_integer (FILE *stream)
   return sign * n;
 }
 \f
   return sign * n;
 }
 \f

-/*-------------------------------------------------------------------.
-| Dump the string from FINPUT to FOUTPUT.  MATCH is the delimiter of |
-| the string (either ' or ").                                        |
-`-------------------------------------------------------------------*/
+/*--------------------------------------------------------------.
+| Get the data type (alternative in the union) of the value for |
+| symbol N in rule RULE.                                        |
+`--------------------------------------------------------------*/
+
+static char *
+get_type_name (int n, symbol_list * rule)
+{
+  int i;
+  symbol_list *rp;
+
+  if (n < 0)
+    {
+      complain (_("invalid $ value"));
+      return NULL;
+    }
+
+  rp = rule;
+  i = 0;
+
+  while (i < n)
+    {
+      rp = rp->next;
+      if (rp == NULL || rp->sym == NULL)
+       {
+         complain (_("invalid $ value"));
+         return NULL;
+       }
+      i++;
+    }
+
+  return rp->sym->type_name;
+}
+\f
+/*------------------------------------------------------------.
+| Dump the string from FIN to OOUT if non null.  MATCH is the |
+| delimiter of the string (either ' or ").                    |
+`------------------------------------------------------------*/

 
 static inline void
 
 static inline void

-copy_string (FILE *fin, FILE *fout, int match)
+copy_string2 (FILE *fin, struct obstack *oout, int match, int store)

 {
   int c;
 
 {
   int c;
 

-  putc (match, fout);
+  if (store)
+    obstack_1grow (oout, match);
+

   c = getc (fin);
 
   while (c != match)
   c = getc (fin);
 
   while (c != match)


@@ -146,14 +178,15 @@ copy_string (FILE *fin, FILE *fout, int match)
          continue;
        }
 
          continue;
        }
 

-      putc (c, fout);
+      obstack_1grow (oout, c);

 
       if (c == '\\')
        {
          c = getc (fin);
          if (c == EOF)
            fatal (_("unterminated string at end of file"));
 
       if (c == '\\')
        {
          c = getc (fin);
          if (c == EOF)
            fatal (_("unterminated string at end of file"));

-         putc (c, fout);
+         obstack_1grow (oout, c);
+

          if (c == '\n')
            lineno++;
        }
          if (c == '\n')
            lineno++;
        }


@@ -161,27 +194,68 @@ copy_string (FILE *fin, FILE *fout, int match)
       c = getc (fin);
     }
 
       c = getc (fin);
     }
 

-  putc (c, fout);
+  if (store)
+    obstack_1grow (oout, c);

 }
 
 }
 

+/* FIXME. */

 
 

-/*---------------------------------------------------------------.
-| Dump the comment from IN to OUT1 and OUT2.  C is either `*' or |
-| `/', depending upon the type of comments used.  OUT2 might be  |
-| NULL.                                                          |
-`---------------------------------------------------------------*/
+static inline void
+copy_string (FILE *fin, struct obstack *oout, int match)
+{
+  copy_string2 (fin, oout, match, 1);
+}
+
+/* FIXME. */
+
+static inline void
+copy_identifier (FILE *fin, struct obstack *oout)
+{
+  int c;
+
+  while (isalnum (c = getc (fin)) || c == '_')
+    obstack_1grow (oout, c);
+
+  ungetc (c, fin);
+}
+
+/*-----------------------------------------------------------------.
+| Dump the wannabee comment from IN to OUT1 and OUT2 (which can be |
+| NULL).  In fact we just saw a `/', which might or might not be a |
+| comment.  In any case, copy what we saw.                         |
+|                                                                  |
+| OUT2 might be NULL.                                              |
+`-----------------------------------------------------------------*/

 
 static inline void
 
 static inline void

-copy_comment2 (FILE *in, FILE *out1, FILE *out2, int c)
+copy_comment2 (FILE *fin, struct obstack *oout1, struct obstack *oout2)

 {
   int cplus_comment;
   int ended;
 {
   int cplus_comment;
   int ended;

+  int c;

 
 

-  cplus_comment = (c == '/');
-  putc (c, out1);
-  if (out2)
-    putc (c, out2);
-  c = getc (in);
+  /* We read a `/', output it. */
+  obstack_1grow (oout1, '/');
+  if (oout2)
+    obstack_1grow (oout2, '/');
+
+  switch ((c = getc (fin)))
+    {
+    case '/':
+      cplus_comment = 1;
+      break;
+    case '*':
+      cplus_comment = 0;
+      break;
+    default:
+      ungetc (c, fin);
+      return;
+    }
+
+  obstack_1grow (oout1, c);
+  if (oout2)
+    obstack_1grow (oout2, c);
+  c = getc (fin);

 
   ended = 0;
   while (!ended)
 
   ended = 0;
   while (!ended)


@@ -190,73 +264,73 @@ copy_comment2 (FILE *in, FILE *out1, FILE *out2, int c)
        {
          while (c == '*')
            {
        {
          while (c == '*')
            {

-             putc (c, out1);
-             if (out2)
-               putc (c, out2);
-             c = getc (in);
+             obstack_1grow (oout1, c);
+             if (oout2)
+               obstack_1grow (oout2, c);
+             c = getc (fin);

            }
 
          if (c == '/')
            {
            }
 
          if (c == '/')
            {

-             putc (c, out1);
-             if (out2)
-               putc (c, out2);
+             obstack_1grow (oout1, c);
+             if (oout2)
+               obstack_1grow (oout2, c);

              ended = 1;
            }
        }
       else if (c == '\n')
        {
          lineno++;
              ended = 1;
            }
        }
       else if (c == '\n')
        {
          lineno++;

-         putc (c, out1);
-         if (out2)
-           putc (c, out2);
+         obstack_1grow (oout1, c);
+         if (oout2)
+           obstack_1grow (oout2, c);

          if (cplus_comment)
            ended = 1;
          else
          if (cplus_comment)
            ended = 1;
          else

-           c = getc (in);
+           c = getc (fin);

        }
       else if (c == EOF)
        fatal (_("unterminated comment"));
       else
        {
        }
       else if (c == EOF)
        fatal (_("unterminated comment"));
       else
        {

-         putc (c, out1);
-         if (out2)
-           putc (c, out2);
-         c = getc (in);
+         obstack_1grow (oout1, c);
+         if (oout2)
+           obstack_1grow (oout2, c);
+         c = getc (fin);

        }
     }
 }
 
 
        }
     }
 }
 
 

-/*------------------------------------------------------------.
-| Dump the comment from FIN to FOUT.  C is either `*' or `/', |
-| depending upon the type of comments used.                   |
-`------------------------------------------------------------*/
+/*-------------------------------------------------------------------.
+| Dump the comment (actually the current string starting with a `/') |
+| from FIN to OOUT.                                                  |
+`-------------------------------------------------------------------*/

 
 static inline void
 
 static inline void

-copy_comment (FILE *fin, FILE *fout, int c)
+copy_comment (FILE *fin, struct obstack *oout)

 {
 {

-  copy_comment2 (fin, fout, NULL, c);
+  copy_comment2 (fin, oout, NULL);

 }
 
 
 /*-----------------------------------------------------------------.
 }
 
 
 /*-----------------------------------------------------------------.

-| FIN is pointing to a location (i.e., a `@').  Output to FOUT a   |
+| FIN is pointing to a location (i.e., a `@').  Output to OOUT a   |

 | reference to this location. STACK_OFFSET is the number of values |
 | in the current rule so far, which says where to find `$0' with   |
 | respect to the top of the stack.                                 |
 `-----------------------------------------------------------------*/
 
 static inline void
 | reference to this location. STACK_OFFSET is the number of values |
 | in the current rule so far, which says where to find `$0' with   |
 | respect to the top of the stack.                                 |
 `-----------------------------------------------------------------*/
 
 static inline void

-copy_at (FILE *fin, FILE *fout, int stack_offset)
+copy_at (FILE *fin, struct obstack *oout, int stack_offset)

 {
   int c;
 
   c = getc (fin);
   if (c == '$')
     {
 {
   int c;
 
   c = getc (fin);
   if (c == '$')
     {

-      fprintf (fout, "yyloc");
-      yylsp_needed = 1;
+      obstack_sgrow (oout, "yyloc");
+      locations_flag = 1;

     }
   else if (isdigit (c) || c == '-')
     {
     }
   else if (isdigit (c) || c == '-')
     {


@@ -265,11 +339,79 @@ copy_at (FILE *fin, FILE *fout, int stack_offset)
       ungetc (c, fin);
       n = read_signed_integer (fin);
 
       ungetc (c, fin);
       n = read_signed_integer (fin);
 

-      fprintf (fout, "yylsp[%d]", n - stack_offset);
-      yylsp_needed = 1;
+      obstack_fgrow1 (oout, "yylsp[%d]", n - stack_offset);
+      locations_flag = 1;
+    }
+  else
+    {
+      char buf[] = "@c";
+      buf[1] = c;
+      complain (_("%s is invalid"), quote (buf));
+    }
+}
+
+
+/*-------------------------------------------------------------------.
+| FIN is pointing to a wannabee semantic value (i.e., a `$').        |
+|                                                                    |
+| Possible inputs: $[<TYPENAME>]($|integer)                          |
+|                                                                    |
+| Output to OOUT a reference to this semantic value. STACK_OFFSET is |
+| the number of values in the current rule so far, which says where  |
+| to find `$0' with respect to the top of the stack.                 |
+`-------------------------------------------------------------------*/
+
+static inline void
+copy_dollar (FILE *fin, struct obstack *oout,
+            symbol_list *rule, int stack_offset)
+{
+  int c = getc (fin);
+  const char *type_name = NULL;
+
+  /* Get the type name if explicit. */
+  if (c == '<')
+    {
+      read_type_name (fin);
+      type_name = token_buffer;
+      value_components_used = 1;
+      c = getc (fin);
+    }
+
+  if (c == '$')
+    {
+      obstack_sgrow (oout, "yyval");
+
+      if (!type_name)
+       type_name = get_type_name (0, rule);
+      if (type_name)
+       obstack_fgrow1 (oout, ".%s", type_name);
+      if (!type_name && typed)
+       complain (_("$$ of `%s' has no declared type"),
+                 rule->sym->tag);
+    }
+  else if (isdigit (c) || c == '-')
+    {
+      int n;
+      ungetc (c, fin);
+      n = read_signed_integer (fin);
+
+      if (!type_name && n > 0)
+       type_name = get_type_name (n, rule);
+
+      obstack_fgrow1 (oout, "yyvsp[%d]", n - stack_offset);
+
+      if (type_name)
+       obstack_fgrow1 (oout, ".%s", type_name);
+      if (!type_name && typed)
+       complain (_("$%d of `%s' has no declared type"),
+                 n, rule->sym->tag);

     }
   else
     }
   else

-    complain (_("@%s is invalid"), printable_version (c));
+    {
+      char buf[] = "$c";
+      buf[1] = c;
+      complain (_("%s is invalid"), quote (buf));
+    }

 }
 \f
 /*-------------------------------------------------------------------.
 }
 \f
 /*-------------------------------------------------------------------.


@@ -284,8 +426,14 @@ copy_definition (void)
   /* -1 while reading a character if prev char was %. */
   int after_percent;
 
   /* -1 while reading a character if prev char was %. */
   int after_percent;
 

-  if (!nolinesflag)
-    fprintf (fattrs, "#line %d \"%s\"\n", lineno, infile);
+#if 0
+  if (!no_lines_flag)
+    {
+      obstack_fgrow2 (&attrs_obstack, muscle_find ("linef"),
+                     lineno, quotearg_style (c_quoting_style,
+                                             muscle_find("filename")));
+    }
+#endif

 
   after_percent = 0;
 
 
   after_percent = 0;
 


@@ -296,7 +444,7 @@ copy_definition (void)
       switch (c)
        {
        case '\n':
       switch (c)
        {
        case '\n':

-         putc (c, fattrs);
+         obstack_1grow (&attrs_obstack, c);

          lineno++;
          break;
 
          lineno++;
          break;
 


@@ -306,22 +454,18 @@ copy_definition (void)
 
        case '\'':
        case '"':
 
        case '\'':
        case '"':

-         copy_string (finput, fattrs, c);
+         copy_string (finput, &attrs_obstack, c);

          break;
 
        case '/':
          break;
 
        case '/':

-         putc (c, fattrs);
-         c = getc (finput);
-         if (c != '*' && c != '/')
-           continue;
-         copy_comment (finput, fattrs, c);
+         copy_comment (finput, &attrs_obstack);

          break;
 
        case EOF:
          fatal ("%s", _("unterminated `%{' definition"));
 
        default:
          break;
 
        case EOF:
          fatal ("%s", _("unterminated `%{' definition"));
 
        default:

-         putc (c, fattrs);
+         obstack_1grow (&attrs_obstack, c);

        }
 
       c = getc (finput);
        }
 
       c = getc (finput);


@@ -330,12 +474,10 @@ copy_definition (void)
        {
          if (c == '}')
            return;
        {
          if (c == '}')
            return;

-         putc ('%', fattrs);
+         obstack_1grow (&attrs_obstack, '%');

        }
       after_percent = 0;
        }
       after_percent = 0;

-

     }
     }

-

 }
 
 
 }
 
 


@@ -348,49 +490,59 @@ copy_definition (void)
 static void
 parse_token_decl (symbol_class what_is, symbol_class what_is_not)
 {
 static void
 parse_token_decl (symbol_class what_is, symbol_class what_is_not)
 {

-  int token = 0;
-  char *typename = 0;
-  struct bucket *symbol = NULL;        /* pts to symbol being defined */
-  int k;
+  token_t token = tok_undef;
+  char *typename = NULL;

 
 

+  /* The symbol being defined.  */
+  struct bucket *symbol = NULL;
+
+  /* After `%token' and `%nterm', any number of symbols maybe be
+     defined.  */

   for (;;)
     {
       int tmp_char = ungetc (skip_white_space (), finput);
 
   for (;;)
     {
       int tmp_char = ungetc (skip_white_space (), finput);
 

+      /* `%' (for instance from `%token', or from `%%' etc.) is the
+        only valid means to end this declaration.  */

       if (tmp_char == '%')
        return;
       if (tmp_char == EOF)
        fatal (_("Premature EOF after %s"), token_buffer);
 
       token = lex ();
       if (tmp_char == '%')
        return;
       if (tmp_char == EOF)
        fatal (_("Premature EOF after %s"), token_buffer);
 
       token = lex ();

-      if (token == COMMA)
+      if (token == tok_comma)

        {
          symbol = NULL;
          continue;
        }
        {
          symbol = NULL;
          continue;
        }

-      if (token == TYPENAME)
+      if (token == tok_typename)

        {
        {

-         k = strlen (token_buffer);
-         typename = XCALLOC (char, k + 1);
-         strcpy (typename, token_buffer);
+         typename = xstrdup (token_buffer);

          value_components_used = 1;
          symbol = NULL;
        }
          value_components_used = 1;
          symbol = NULL;
        }

-      else if (token == IDENTIFIER && *symval->tag == '\"' && symbol)
+      else if (token == tok_identifier && *symval->tag == '\"' && symbol)

        {
        {

-         translations = 1;
-         symval->class = token_sym;
-         symval->type_name = typename;
-         symval->user_token_number = symbol->user_token_number;
-         symbol->user_token_number = SALIAS;
-
-         symval->alias = symbol;
-         symbol->alias = symval;
-         symbol = NULL;
-
-         nsyms--;              /* symbol and symval combined are only one symbol */
+         if (symval->alias)
+           warn (_("symbol `%s' used more than once as a literal string"),
+                 symval->tag);
+         else if (symbol->alias)
+           warn (_("symbol `%s' given more than one literal string"),
+                 symbol->tag);
+         else
+           {
+             symval->class = token_sym;
+             symval->type_name = typename;
+             symval->user_token_number = symbol->user_token_number;
+             symbol->user_token_number = SALIAS;
+             symval->alias = symbol;
+             symbol->alias = symval;
+             /* symbol and symval combined are only one symbol */
+             nsyms--;
+           }
+         symbol = NULL;

        }
        }

-      else if (token == IDENTIFIER)
+      else if (token == tok_identifier)

        {
          int oldclass = symval->class;
          symbol = symval;
        {
          int oldclass = symval->class;
          symbol = symval;


@@ -409,10 +561,9 @@ parse_token_decl (symbol_class what_is, symbol_class what_is_not)
                complain (_("type redeclaration for %s"), symbol->tag);
            }
        }
                complain (_("type redeclaration for %s"), symbol->tag);
            }
        }

-      else if (symbol && token == NUMBER)
+      else if (symbol && token == tok_number)

        {
          symbol->user_token_number = numval;
        {
          symbol->user_token_number = numval;

-         translations = 1;

        }
       else
        {
        }
       else
        {


@@ -434,7 +585,7 @@ parse_start_decl (void)
 {
   if (start_flag)
     complain (_("multiple %s declarations"), "%start");
 {
   if (start_flag)
     complain (_("multiple %s declarations"), "%start");

-  if (lex () != IDENTIFIER)
+  if (lex () != tok_identifier)

     complain (_("invalid %s declaration"), "%start");
   else
     {
     complain (_("invalid %s declaration"), "%start");
   else
     {


@@ -443,43 +594,6 @@ parse_start_decl (void)
     }
 }
 
     }
 }
 

-
-
-/*--------------------------------------------------------------.
-| Get the data type (alternative in the union) of the value for |
-| symbol n in rule rule.                                        |
-`--------------------------------------------------------------*/
-
-static char *
-get_type_name (int n, symbol_list * rule)
-{
-  int i;
-  symbol_list *rp;
-
-  if (n < 0)
-    {
-      complain (_("invalid $ value"));
-      return NULL;
-    }
-
-  rp = rule;
-  i = 0;
-
-  while (i < n)
-    {
-      rp = rp->next;
-      if (rp == NULL || rp->sym == NULL)
-       {
-         complain (_("invalid $ value"));
-         return NULL;
-       }
-      i++;
-    }
-
-  return rp->sym->type_name;
-}
-
-

 /*-----------------------------------------------------------.
 | read in a %type declaration and record its information for |
 | get_type_name to access                                    |
 /*-----------------------------------------------------------.
 | read in a %type declaration and record its information for |
 | get_type_name to access                                    |


@@ -488,23 +602,20 @@ get_type_name (int n, symbol_list * rule)
 static void
 parse_type_decl (void)
 {
 static void
 parse_type_decl (void)
 {

-  int k;

   char *name;
 
   char *name;
 

-  if (lex () != TYPENAME)
+  if (lex () != tok_typename)

     {
       complain ("%s", _("%type declaration has no <typename>"));
       skip_to_char ('%');
       return;
     }
 
     {
       complain ("%s", _("%type declaration has no <typename>"));
       skip_to_char ('%');
       return;
     }
 

-  k = strlen (token_buffer);
-  name = XCALLOC (char, k + 1);
-  strcpy (name, token_buffer);
+  name = xstrdup (token_buffer);

 
   for (;;)
     {
 
   for (;;)
     {

-      int t;
+      token_t t;

       int tmp_char = ungetc (skip_white_space (), finput);
 
       if (tmp_char == '%')
       int tmp_char = ungetc (skip_white_space (), finput);
 
       if (tmp_char == '%')


@@ -517,11 +628,11 @@ parse_type_decl (void)
       switch (t)
        {
 
       switch (t)
        {
 

-       case COMMA:
-       case SEMICOLON:
+       case tok_comma:
+       case tok_semicolon:

          break;
 
          break;
 

-       case IDENTIFIER:
+       case tok_identifier:

          if (symval->type_name == NULL)
            symval->type_name = name;
          else if (strcmp (name, symval->type_name) != 0)
          if (symval->type_name == NULL)
            symval->type_name = name;
          else if (strcmp (name, symval->type_name) != 0)


@@ -547,7 +658,6 @@ parse_type_decl (void)
 static void
 parse_assoc_decl (associativity assoc)
 {
 static void
 parse_assoc_decl (associativity assoc)
 {

-  int k;

   char *name = NULL;
   int prev = 0;
 
   char *name = NULL;
   int prev = 0;
 


@@ -555,7 +665,7 @@ parse_assoc_decl (associativity assoc)
 
   for (;;)
     {
 
   for (;;)
     {

-      int t;
+      token_t t;

       int tmp_char = ungetc (skip_white_space (), finput);
 
       if (tmp_char == '%')
       int tmp_char = ungetc (skip_white_space (), finput);
 
       if (tmp_char == '%')


@@ -567,17 +677,14 @@ parse_assoc_decl (associativity assoc)
 
       switch (t)
        {
 
       switch (t)
        {

-
-       case TYPENAME:
-         k = strlen (token_buffer);
-         name = XCALLOC (char, k + 1);
-         strcpy (name, token_buffer);
+       case tok_typename:
+         name = xstrdup (token_buffer);

          break;
 
          break;
 

-       case COMMA:
+       case tok_comma:

          break;
 
          break;
 

-       case IDENTIFIER:
+       case tok_identifier:

          if (symval->prec != 0)
            complain (_("redefining precedence of %s"), symval->tag);
          symval->prec = lastprec;
          if (symval->prec != 0)
            complain (_("redefining precedence of %s"), symval->tag);
          symval->prec = lastprec;


@@ -594,11 +701,10 @@ parse_assoc_decl (associativity assoc)
            }
          break;
 
            }
          break;
 

-       case NUMBER:
-         if (prev == IDENTIFIER)
+       case tok_number:
+         if (prev == tok_identifier)

            {
              symval->user_token_number = numval;
            {
              symval->user_token_number = numval;

-             translations = 1;

            }
          else
            {
            }
          else
            {


@@ -609,7 +715,7 @@ token_buffer);
            }
          break;
 
            }
          break;
 

-       case SEMICOLON:
+       case tok_semicolon:

          return;
 
        default:
          return;
 
        default:


@@ -618,45 +724,59 @@ token_buffer);
        }
 
       prev = t;
        }
 
       prev = t;

-

     }
 }
 
 
 
     }
 }
 
 
 

-/*-------------------------------------------------------------------.
-| Copy the union declaration into fattrs (and fdefines), where it is |
-| made into the definition of YYSTYPE, the type of elements of the   |
-| parser value stack.                                                |
-`-------------------------------------------------------------------*/
+/*--------------------------------------------------------------.
+| Copy the union declaration into the stype muscle             |
+| (and fdefines),  where it is made into the definition of     |
+| YYSTYPE, the type of elements of the parser value stack.     |
+`--------------------------------------------------------------*/

 
 static void
 parse_union_decl (void)
 {
   int c;
   int count = 0;
 
 static void
 parse_union_decl (void)
 {
   int c;
   int count = 0;

+  struct obstack union_obstack;
+  const char *prologue = "\
+#ifndef YYSTYPE\n\
+typedef union";
+  const char *epilogue = "\
+ yystype;\n\
+# define YYSTYPE yystype\n\
+#endif\n";

 
   if (typed)
     complain (_("multiple %s declarations"), "%union");
 
   typed = 1;
 
 
   if (typed)
     complain (_("multiple %s declarations"), "%union");
 
   typed = 1;
 

-  if (!nolinesflag)
-    fprintf (fattrs, "\n#line %d \"%s\"\n", lineno, infile);
-  else
-    fprintf (fattrs, "\n");
+  /* FIXME: I'm worried: are you sure attrs_obstack is properly
+     filled?  */
+  /* I don't see any reasons to keep this line, because we should
+     create a special skeleton for this option.  */
+  if (no_lines_flag)
+    obstack_1grow (&attrs_obstack, '\n');

 
 

-  fprintf (fattrs, "typedef union");
-  if (fdefines)
-    fprintf (fdefines, "typedef union");
+  obstack_init (&union_obstack);
+  obstack_sgrow (&union_obstack, "union");
+  if (defines_flag)
+    obstack_sgrow (&defines_obstack, prologue);

 
   c = getc (finput);
 
   while (c != EOF)
     {
 
   c = getc (finput);
 
   while (c != EOF)
     {

-      putc (c, fattrs);
-      if (fdefines)
-       putc (c, fdefines);
+      /* If C contains '/', it is output by copy_comment ().  */
+      if (c != '/')
+       {
+         obstack_1grow (&union_obstack, c);
+         if (defines_flag)
+           obstack_1grow (&defines_obstack, c);
+       }

 
       switch (c)
        {
 
       switch (c)
        {


@@ -665,13 +785,9 @@ parse_union_decl (void)
          break;
 
        case '/':
          break;
 
        case '/':

-         c = getc (finput);
-         if (c != '*' && c != '/')
-           continue;
-         copy_comment2 (finput, fattrs, fdefines, c);
+         copy_comment2 (finput, &defines_obstack, &union_obstack);

          break;
 
          break;
 

-

        case '{':
          count++;
          break;
        case '{':
          count++;
          break;


@@ -682,19 +798,21 @@ parse_union_decl (void)
          count--;
          if (count <= 0)
            {
          count--;
          if (count <= 0)
            {

-             fprintf (fattrs, " YYSTYPE;\n");
-             if (fdefines)
-               fprintf (fdefines, " YYSTYPE;\n");
+             if (defines_flag)
+               obstack_sgrow (&defines_obstack, epilogue);

              /* JF don't choke on trailing semi */
              c = skip_white_space ();
              if (c != ';')
                ungetc (c, finput);
              /* JF don't choke on trailing semi */
              c = skip_white_space ();
              if (c != ';')
                ungetc (c, finput);

+             obstack_1grow (&union_obstack, 0);
+             muscle_insert ("stype", obstack_finish (&union_obstack));

              return;
            }
        }
 
       c = getc (finput);
     }
              return;
            }
        }
 
       c = getc (finput);
     }

+

 }
 
 
 }
 
 


@@ -706,28 +824,13 @@ parse_union_decl (void)
 static void
 parse_expect_decl (void)
 {
 static void
 parse_expect_decl (void)
 {

-  int c;
-  int count;
-  char buffer[20];
-
-  c = getc (finput);
-  while (c == ' ' || c == '\t')
-    c = getc (finput);
-
-  count = 0;
-  while (c >= '0' && c <= '9')
-    {
-      if (count < 20)
-       buffer[count++] = c;
-      c = getc (finput);
-    }
-  buffer[count] = 0;
-
+  int c = skip_white_space ();

   ungetc (c, finput);
 
   ungetc (c, finput);
 

-  if (count <= 0 || count > 10)
-    complain ("%s", _("argument of %expect is not an integer"));
-  expected_conflicts = atoi (buffer);
+  if (!isdigit (c))
+    complain (_("argument of %%expect is not an integer"));
+  else
+    expected_conflicts = read_signed_integer (finput);

 }
 
 
 }
 
 


@@ -754,25 +857,22 @@ parse_expect_decl (void)
 static void
 parse_thong_decl (void)
 {
 static void
 parse_thong_decl (void)
 {

-  int token;
+  token_t token;

   struct bucket *symbol;
   char *typename = 0;
   struct bucket *symbol;
   char *typename = 0;

-  int k, usrtoknum;
+  int usrtoknum = SUNDEF;

 
 

-  translations = 1;

   token = lex ();              /* fetch typename or first token */
   token = lex ();              /* fetch typename or first token */

-  if (token == TYPENAME)
+  if (token == tok_typename)

     {
     {

-      k = strlen (token_buffer);
-      typename = XCALLOC (char, k + 1);
-      strcpy (typename, token_buffer);
+      typename = xstrdup (token_buffer);

       value_components_used = 1;
       token = lex ();          /* fetch first token */
     }
 
   /* process first token */
 
       value_components_used = 1;
       token = lex ();          /* fetch first token */
     }
 
   /* process first token */
 

-  if (token != IDENTIFIER)
+  if (token != tok_identifier)

     {
       complain (_("unrecognized item %s, expected an identifier"),
                token_buffer);
     {
       complain (_("unrecognized item %s, expected an identifier"),
                token_buffer);


@@ -786,17 +886,15 @@ parse_thong_decl (void)
 
   token = lex ();              /* get number or literal string */
 
 
   token = lex ();              /* get number or literal string */
 

-  if (token == NUMBER)
+  if (token == tok_number)

     {
       usrtoknum = numval;
       token = lex ();          /* okay, did number, now get literal */
     }
     {
       usrtoknum = numval;
       token = lex ();          /* okay, did number, now get literal */
     }

-  else
-    usrtoknum = 0;

 
   /* process literal string token */
 
 
   /* process literal string token */
 

-  if (token != IDENTIFIER || *symval->tag != '\"')
+  if (token != tok_identifier || *symval->tag != '\"')

     {
       complain (_("expected string constant instead of %s"), token_buffer);
       skip_to_char ('%');
     {
       complain (_("expected string constant instead of %s"), token_buffer);
       skip_to_char ('%');


@@ -809,91 +907,143 @@ parse_thong_decl (void)
   symval->alias = symbol;
   symbol->alias = symval;
 
   symval->alias = symbol;
   symbol->alias = symval;
 

-  nsyms--;                     /* symbol and symval combined are only one symbol */
+  /* symbol and symval combined are only one symbol.  */
+  nsyms--;

 }
 
 }
 

+static void
+parse_muscle_decl (void)
+{
+  int ch = ungetc (skip_white_space (), finput);
+  char* muscle_key;
+  char* muscle_value;
+
+  /* Read key. */
+  if (!isalpha (ch) && ch != '_')
+    {
+      complain (_("invalid %s declaration"), "%define");
+      skip_to_char ('%');
+      return;
+    }
+  copy_identifier (finput, &muscle_obstack);
+  obstack_1grow (&muscle_obstack, 0);
+  muscle_key = obstack_finish (&muscle_obstack);
+
+  /* Read value. */
+  ch = skip_white_space ();
+  if (ch != '"')
+    {
+      ungetc (ch, finput);
+      if (ch != EOF)
+       {
+         complain (_("invalid %s declaration"), "%define");
+         skip_to_char ('%');
+         return;
+       }
+      else
+       fatal (_("Premature EOF after %s"), "\"");
+    }
+  copy_string2 (finput, &muscle_obstack, '"', 0);
+  obstack_1grow (&muscle_obstack, 0);
+  muscle_value = obstack_finish (&muscle_obstack);
+
+  /* Store the (key, value) pair in the environment. */
+  muscle_insert (muscle_key, muscle_value);
+}
+
+
+/*----------------------------------.
+| Parse what comes after %skeleton. |
+`----------------------------------*/
+
+void
+parse_skel_decl (void)
+{
+  /* Complete with parse_dquoted_param () on the CVS branch 1.29.  */
+}

 
 /*----------------------------------------------------------------.
 | Read from finput until `%%' is seen.  Discard the `%%'.  Handle |
 | any `%' declarations, and copy the contents of any `%{ ... %}'  |
 
 /*----------------------------------------------------------------.
 | Read from finput until `%%' is seen.  Discard the `%%'.  Handle |
 | any `%' declarations, and copy the contents of any `%{ ... %}'  |

-| groups to fattrs.                                               |
+| groups to ATTRS_OBSTACK.                                        |

 `----------------------------------------------------------------*/
 
 static void
 read_declarations (void)
 {
 `----------------------------------------------------------------*/
 
 static void
 read_declarations (void)
 {

-  int c;
-  int tok;
-

   for (;;)
     {
   for (;;)
     {

-      c = skip_white_space ();
+      int c = skip_white_space ();

 
       if (c == '%')
        {
 
       if (c == '%')
        {

-         tok = parse_percent_token ();
+         token_t tok = parse_percent_token ();

 
          switch (tok)
            {
 
          switch (tok)
            {

-           case TWO_PERCENTS:
+           case tok_two_percents:

              return;
 
              return;
 

-           case PERCENT_LEFT_CURLY:
+           case tok_percent_left_curly:

              copy_definition ();
              break;
 
              copy_definition ();
              break;
 

-           case TOKEN:
+           case tok_token:

              parse_token_decl (token_sym, nterm_sym);
              break;
 
              parse_token_decl (token_sym, nterm_sym);
              break;
 

-           case NTERM:
+           case tok_nterm:

              parse_token_decl (nterm_sym, token_sym);
              break;
 
              parse_token_decl (nterm_sym, token_sym);
              break;
 

-           case TYPE:
+           case tok_type:

              parse_type_decl ();
              break;
 
              parse_type_decl ();
              break;
 

-           case START:
+           case tok_start:

              parse_start_decl ();
              break;
 
              parse_start_decl ();
              break;
 

-           case UNION:
+           case tok_union:

              parse_union_decl ();
              break;
 
              parse_union_decl ();
              break;
 

-           case EXPECT:
+           case tok_expect:

              parse_expect_decl ();
              break;
              parse_expect_decl ();
              break;

-           case THONG:
+
+           case tok_thong:

              parse_thong_decl ();
              break;
 
              parse_thong_decl ();
              break;
 

-           case LEFT:
+           case tok_left:

              parse_assoc_decl (left_assoc);
              break;
 
              parse_assoc_decl (left_assoc);
              break;
 

-           case RIGHT:
+           case tok_right:

              parse_assoc_decl (right_assoc);
              break;
 
              parse_assoc_decl (right_assoc);
              break;
 

-           case NONASSOC:
+           case tok_nonassoc:

              parse_assoc_decl (non_assoc);
              break;
 
              parse_assoc_decl (non_assoc);
              break;
 

-           case SEMANTIC_PARSER:
-             if (semantic_parser == 0)
-               {
-                 semantic_parser = 1;
-                 open_extra_files ();
-               }
+           case tok_define:
+             parse_muscle_decl ();
+             break;
+
+           case tok_skel:
+             parse_skel_decl ();

              break;
 
              break;
 

-           case PURE_PARSER:
-             pure_parser = 1;
+           case tok_noop:

              break;
 
              break;
 

-           case NOOP:
+           case tok_stropt:
+           case tok_intopt:
+           case tok_obsolete:
+           case tok_illegal:
+             abort ();

              break;
 
            default:
              break;
 
            default:


@@ -905,7 +1055,9 @@ read_declarations (void)
        fatal (_("no input grammar"));
       else
        {
        fatal (_("no input grammar"));
       else
        {

-         complain (_("unknown character: %s"), printable_version (c));
+         char buf[] = "c";
+         buf[0] = c;
+         complain (_("unknown character: %s"), quote (buf));

          skip_to_char ('%');
        }
     }
          skip_to_char ('%');
        }
     }


@@ -919,21 +1071,25 @@ read_declarations (void)
 `-------------------------------------------------------------------*/
 
 static void
 `-------------------------------------------------------------------*/
 
 static void

-copy_action (symbol_list * rule, int stack_offset)
+copy_action (symbol_list *rule, int stack_offset)

 {
   int c;
 {
   int c;

-  int n;

   int count;
   int count;

-  char *type_name;
+  char buf[4096];

 
   /* offset is always 0 if parser has already popped the stack pointer */
   if (semantic_parser)
     stack_offset = 0;
 
 
   /* offset is always 0 if parser has already popped the stack pointer */
   if (semantic_parser)
     stack_offset = 0;
 

-  fprintf (faction, "\ncase %d:\n", nrules);
-  if (!nolinesflag)
-    fprintf (faction, "#line %d \"%s\"\n", lineno, infile);
-  putc ('{', faction);
+  obstack_fgrow1 (&action_obstack, "\ncase %d:\n", nrules);
+
+  if (!no_lines_flag)
+    {
+      obstack_fgrow2 (&action_obstack, muscle_find ("linef"),
+                     lineno, quotearg_style (c_quoting_style,
+                                             muscle_find ("filename")));
+    }
+  obstack_1grow (&action_obstack, '{');

 
   count = 1;
   c = getc (finput);
 
   count = 1;
   c = getc (finput);


@@ -945,91 +1101,39 @@ copy_action (symbol_list * rule, int stack_offset)
          switch (c)
            {
            case '\n':
          switch (c)
            {
            case '\n':

-             putc (c, faction);
+             obstack_1grow (&action_obstack, c);

              lineno++;
              break;
 
            case '{':
              lineno++;
              break;
 
            case '{':

-             putc (c, faction);
+             obstack_1grow (&action_obstack, c);

              count++;
              break;
 
            case '\'':
            case '"':
              count++;
              break;
 
            case '\'':
            case '"':

-             copy_string (finput, faction, c);
+             copy_string (finput, &action_obstack, c);

              break;
 
            case '/':
              break;
 
            case '/':

-             putc (c, faction);
-             c = getc (finput);
-             if (c != '*' && c != '/')
-               continue;
-             copy_comment (finput, faction, c);
+             copy_comment (finput, &action_obstack);

              break;
 
            case '$':
              break;
 
            case '$':

-             c = getc (finput);
-             type_name = NULL;
-
-             if (c == '<')
-               {
-                 char *cp = token_buffer;
-
-                 while ((c = getc (finput)) != '>' && c > 0)
-                   {
-                     if (cp == token_buffer + maxtoken)
-                       cp = grow_token_buffer (cp);
-
-                     *cp++ = c;
-                   }
-                 *cp = 0;
-                 type_name = token_buffer;
-                 value_components_used = 1;
-
-                 c = getc (finput);
-               }
-             if (c == '$')
-               {
-                 fprintf (faction, "yyval");
-                 if (!type_name)
-                   type_name = get_type_name (0, rule);
-                 if (type_name)
-                   fprintf (faction, ".%s", type_name);
-                 if (!type_name && typed)
-                   complain (_("$$ of `%s' has no declared type"),
-                             rule->sym->tag);
-               }
-             else if (isdigit (c) || c == '-')
-               {
-                 ungetc (c, finput);
-                 n = read_signed_integer (finput);
-                 c = getc (finput);
-
-                 if (!type_name && n > 0)
-                   type_name = get_type_name (n, rule);
-
-                 fprintf (faction, "yyvsp[%d]", n - stack_offset);
-                 if (type_name)
-                   fprintf (faction, ".%s", type_name);
-                 if (!type_name && typed)
-                   complain (_("$%d of `%s' has no declared type"),
-                             n, rule->sym->tag);
-                 continue;
-               }
-             else
-               complain (_("$%s is invalid"), printable_version (c));
-
+             copy_dollar (finput, &action_obstack,
+                          rule, stack_offset);

              break;
 
            case '@':
              break;
 
            case '@':

-             copy_at (finput, faction, stack_offset);
+             copy_at (finput, &action_obstack,
+                      stack_offset);

              break;
 
            case EOF:
              fatal (_("unmatched %s"), "`{'");
 
            default:
              break;
 
            case EOF:
              fatal (_("unmatched %s"), "`{'");
 
            default:

-             putc (c, faction);
+             obstack_1grow (&action_obstack, c);

            }
 
          c = getc (finput);
            }
 
          c = getc (finput);


@@ -1039,12 +1143,12 @@ copy_action (symbol_list * rule, int stack_offset)
 
       if (--count)
        {
 
       if (--count)
        {

-         putc (c, faction);
+         obstack_1grow (&action_obstack, c);

          c = getc (finput);
        }
     }
 
          c = getc (finput);
        }
     }
 

-  fprintf (faction, ";\n    break;}");
+  obstack_sgrow (&action_obstack, ";\n    break;}");

 }
 \f
 /*-------------------------------------------------------------------.
 }
 \f
 /*-------------------------------------------------------------------.


@@ -1057,22 +1161,22 @@ copy_action (symbol_list * rule, int stack_offset)
 `-------------------------------------------------------------------*/
 
 static void
 `-------------------------------------------------------------------*/
 
 static void

-copy_guard (symbol_list * rule, int stack_offset)
+copy_guard (symbol_list *rule, int stack_offset)

 {
   int c;
 {
   int c;

-  int n;

   int count;
   int count;

-  char *type_name;

   int brace_flag = 0;
 
   /* offset is always 0 if parser has already popped the stack pointer */
   if (semantic_parser)
     stack_offset = 0;
 
   int brace_flag = 0;
 
   /* offset is always 0 if parser has already popped the stack pointer */
   if (semantic_parser)
     stack_offset = 0;
 

-  fprintf (fguard, "\ncase %d:\n", nrules);
-  if (!nolinesflag)
-    fprintf (fguard, "#line %d \"%s\"\n", lineno, infile);
-  putc ('{', fguard);
+  obstack_fgrow1 (&guard_obstack, "\ncase %d:\n", nrules);
+  if (!no_lines_flag)
+    obstack_fgrow2 (&guard_obstack, muscle_find ("linef"),
+                   lineno, quotearg_style (c_quoting_style,
+                                           muscle_find ("filename")));
+  obstack_1grow (&guard_obstack, '{');

 
   count = 0;
   c = getc (finput);
 
   count = 0;
   c = getc (finput);


@@ -1082,18 +1186,18 @@ copy_guard (symbol_list * rule, int stack_offset)
       switch (c)
        {
        case '\n':
       switch (c)
        {
        case '\n':

-         putc (c, fguard);
+         obstack_1grow (&guard_obstack, c);

          lineno++;
          break;
 
        case '{':
          lineno++;
          break;
 
        case '{':

-         putc (c, fguard);
+         obstack_1grow (&guard_obstack, c);

          brace_flag = 1;
          count++;
          break;
 
        case '}':
          brace_flag = 1;
          count++;
          break;
 
        case '}':

-         putc (c, fguard);
+         obstack_1grow (&guard_obstack, c);

          if (count > 0)
            count--;
          else
          if (count > 0)
            count--;
          else


@@ -1105,79 +1209,26 @@ copy_guard (symbol_list * rule, int stack_offset)
 
        case '\'':
        case '"':
 
        case '\'':
        case '"':

-         copy_string (finput, fguard, c);
+         copy_string (finput, &guard_obstack, c);

          break;
 
        case '/':
          break;
 
        case '/':

-         putc (c, fguard);
-         c = getc (finput);
-         if (c != '*' && c != '/')
-           continue;
-         copy_comment (finput, fguard, c);
+         copy_comment (finput, &guard_obstack);

          break;
 
        case '$':
          break;
 
        case '$':

-         c = getc (finput);
-         type_name = NULL;
-
-         if (c == '<')
-           {
-             char *cp = token_buffer;
-
-             while ((c = getc (finput)) != '>' && c > 0)
-               {
-                 if (cp == token_buffer + maxtoken)
-                   cp = grow_token_buffer (cp);
-
-                 *cp++ = c;
-               }
-             *cp = 0;
-             type_name = token_buffer;
-
-             c = getc (finput);
-           }
-
-         if (c == '$')
-           {
-             fprintf (fguard, "yyval");
-             if (!type_name)
-               type_name = rule->sym->type_name;
-             if (type_name)
-               fprintf (fguard, ".%s", type_name);
-             if (!type_name && typed)
-               complain (_("$$ of `%s' has no declared type"),
-                         rule->sym->tag);
-           }
-         else if (isdigit (c) || c == '-')
-           {
-             ungetc (c, finput);
-             n = read_signed_integer (finput);
-             c = getc (finput);
-
-             if (!type_name && n > 0)
-               type_name = get_type_name (n, rule);
-
-             fprintf (fguard, "yyvsp[%d]", n - stack_offset);
-             if (type_name)
-               fprintf (fguard, ".%s", type_name);
-             if (!type_name && typed)
-               complain (_("$%d of `%s' has no declared type"),
-                         n, rule->sym->tag);
-             continue;
-           }
-         else
-           complain (_("$%s is invalid"), printable_version (c));
+         copy_dollar (finput, &guard_obstack, rule, stack_offset);

          break;
 
        case '@':
          break;
 
        case '@':

-         copy_at (finput, fguard, stack_offset);
+         copy_at (finput, &guard_obstack, stack_offset);

          break;
 
        case EOF:
          fatal ("%s", _("unterminated %guard clause"));
 
        default:
          break;
 
        case EOF:
          fatal ("%s", _("unterminated %guard clause"));
 
        default:

-         putc (c, fguard);
+         obstack_1grow (&guard_obstack, c);

        }
 
       if (c != '}' || count != 0)
        }
 
       if (c != '}' || count != 0)


@@ -1186,7 +1237,7 @@ copy_guard (symbol_list * rule, int stack_offset)
 
   c = skip_white_space ();
 
 
   c = skip_white_space ();
 

-  fprintf (fguard, ";\n    break;}");
+  obstack_sgrow (&guard_obstack, ";\n    break;}");

   if (c == '{')
     copy_action (rule, stack_offset);
   else if (c == '=')
   if (c == '{')
     copy_action (rule, stack_offset);
   else if (c == '=')


@@ -1200,20 +1251,6 @@ copy_guard (symbol_list * rule, int stack_offset)
 }
 \f
 
 }
 \f
 

-static void
-record_rule_line (void)
-{
-  /* Record each rule's source line number in rline table.  */
-
-  if (nrules >= rline_allocated)
-    {
-      rline_allocated = nrules * 2;
-      rline = XREALLOC (rline, short, rline_allocated);
-    }
-  rline[nrules] = lineno;
-}
-
-

 /*-------------------------------------------------------------------.
 | Generate a dummy symbol, a nonterminal, whose name cannot conflict |
 | with the user's names.                                             |
 /*-------------------------------------------------------------------.
 | Generate a dummy symbol, a nonterminal, whose name cannot conflict |
 | with the user's names.                                             |


@@ -1222,9 +1259,14 @@ record_rule_line (void)
 static bucket *
 gensym (void)
 {
 static bucket *
 gensym (void)
 {

+  /* Incremented for each generated symbol */
+  static int gensym_count = 0;
+  static char buf[256];
+

   bucket *sym;
 
   bucket *sym;
 

-  sprintf (token_buffer, "@%d", ++gensym_count);
+  sprintf (buf, "@%d", ++gensym_count);
+  token_buffer = buf;

   sym = getsym (token_buffer);
   sym->class = nterm_sym;
   sym->value = nvars++;
   sym = getsym (token_buffer);
   sym->class = nterm_sym;
   sym->value = nvars++;


@@ -1242,34 +1284,32 @@ static int
 get_type (void)
 {
   int k;
 get_type (void)
 {
   int k;

-  int t;
+  token_t token;

   char *name;
 
   char *name;
 

-  t = lex ();
+  token = lex ();

 
 

-  if (t != TYPENAME)
+  if (token != tok_typename)

     {
       complain (_("invalid %s declaration"), "%type");
       return t;
     }
 
     {
       complain (_("invalid %s declaration"), "%type");
       return t;
     }
 

-  k = strlen (token_buffer);
-  name = XCALLOC (char, k + 1);
-  strcpy (name, token_buffer);
+  name = xstrdup (token_buffer);

 
   for (;;)
     {
 
   for (;;)
     {

-      t = lex ();
+      token = lex ();

 
 

-      switch (t)
+      switch (token)

        {
        {

-       case SEMICOLON:
+       case tok_semicolon:

          return lex ();
 
          return lex ();
 

-       case COMMA:
+       case tok_comma:

          break;
 
          break;
 

-       case IDENTIFIER:
+       case tok_identifier:

          if (symval->type_name == NULL)
            symval->type_name = name;
          else if (strcmp (name, symval->type_name) != 0)
          if (symval->type_name == NULL)
            symval->type_name = name;
          else if (strcmp (name, symval->type_name) != 0)


@@ -1278,7 +1318,7 @@ get_type (void)
          break;
 
        default:
          break;
 
        default:

-         return t;
+         return token;

        }
     }
 }
        }
     }
 }


@@ -1299,30 +1339,33 @@ get_type (void)
 static void
 readgram (void)
 {
 static void
 readgram (void)
 {

-  int t;
+  token_t t;

   bucket *lhs = NULL;
   symbol_list *p;
   symbol_list *p1;
   bucket *bp;
 
   bucket *lhs = NULL;
   symbol_list *p;
   symbol_list *p1;
   bucket *bp;
 

-  symbol_list *crule;          /* points to first symbol_list of current rule.  */
-  /* its symbol is the lhs of the rule.   */
-  symbol_list *crule1;         /* points to the symbol_list preceding crule.  */
+  /* Points to first symbol_list of current rule. its symbol is the
+     lhs of the rule.  */
+  symbol_list *crule;
+  /* Points to the symbol_list preceding crule.  */
+  symbol_list *crule1;

 
   p1 = NULL;
 
   t = lex ();
 
 
   p1 = NULL;
 
   t = lex ();
 

-  while (t != TWO_PERCENTS && t != ENDFILE)
+  while (t != tok_two_percents && t != tok_eof)

     {
     {

-      if (t == IDENTIFIER || t == BAR)
+      if (t == tok_identifier || t == tok_bar)

        {
        {

-         int actionflag = 0;
-         int rulelength = 0;   /* number of symbols in rhs of this rule so far  */
+         int action_flag = 0;
+         /* Number of symbols in rhs of this rule so far */
+         int rulelength = 0;

          int xactions = 0;     /* JF for error checking */
          bucket *first_rhs = 0;
 
          int xactions = 0;     /* JF for error checking */
          bucket *first_rhs = 0;
 

-         if (t == IDENTIFIER)
+         if (t == tok_identifier)

            {
              lhs = symval;
 
            {
              lhs = symval;
 


@@ -1333,14 +1376,14 @@ readgram (void)
                }
 
              t = lex ();
                }
 
              t = lex ();

-             if (t != COLON)
+             if (t != tok_colon)

                {
                  complain (_("ill-formed rule: initial symbol not followed by colon"));
                  unlex (t);
                }
            }
 
                {
                  complain (_("ill-formed rule: initial symbol not followed by colon"));
                  unlex (t);
                }
            }
 

-         if (nrules == 0 && t == BAR)
+         if (nrules == 0 && t == tok_bar)

            {
              complain (_("grammar starts with vertical bar"));
              lhs = symval;     /* BOGUS: use a random symval */
            {
              complain (_("grammar starts with vertical bar"));
              lhs = symval;     /* BOGUS: use a random symval */


@@ -1350,8 +1393,6 @@ readgram (void)
          nrules++;
          nitems++;
 
          nrules++;
          nitems++;
 

-         record_rule_line ();
-

          p = XCALLOC (symbol_list, 1);
          p->sym = lhs;
 
          p = XCALLOC (symbol_list, 1);
          p->sym = lhs;
 


@@ -1380,28 +1421,28 @@ readgram (void)
          for (;;)
            {
              t = lex ();
          for (;;)
            {
              t = lex ();

-             if (t == PREC)
+             if (t == tok_prec)

                {
                  t = lex ();
                  crule->ruleprec = symval;
                  t = lex ();
                }
 
                {
                  t = lex ();
                  crule->ruleprec = symval;
                  t = lex ();
                }
 

-             if (!(t == IDENTIFIER || t == LEFT_CURLY))
+             if (!(t == tok_identifier || t == tok_left_curly))

                break;
 
              /* If next token is an identifier, see if a colon follows it.
                 If one does, exit this rule now.  */
                break;
 
              /* If next token is an identifier, see if a colon follows it.
                 If one does, exit this rule now.  */

-             if (t == IDENTIFIER)
+             if (t == tok_identifier)

                {
                  bucket *ssave;
                {
                  bucket *ssave;

-                 int t1;
+                 token_t t1;

 
                  ssave = symval;
                  t1 = lex ();
                  unlex (t1);
                  symval = ssave;
 
                  ssave = symval;
                  t1 = lex ();
                  unlex (t1);
                  symval = ssave;

-                 if (t1 == COLON)
+                 if (t1 == tok_colon)

                    break;
 
                  if (!first_rhs)       /* JF */
                    break;
 
                  if (!first_rhs)       /* JF */


@@ -1413,13 +1454,13 @@ readgram (void)
              /* If we just passed an action, that action was in the middle
                 of a rule, so make a dummy rule to reduce it to a
                 non-terminal.  */
              /* If we just passed an action, that action was in the middle
                 of a rule, so make a dummy rule to reduce it to a
                 non-terminal.  */

-             if (actionflag)
+             if (action_flag)

                {
                  bucket *sdummy;
 
                {
                  bucket *sdummy;
 

-                 /* Since the action was written out with this rule's */
-                 /* number, we must give the new rule this number */
-                 /* by inserting the new rule before it.  */
+                 /* Since the action was written out with this rule's
+                    number, we must give the new rule this number by
+                    inserting the new rule before it.  */

 
                  /* Make a dummy nonterminal, a gensym.  */
                  sdummy = gensym ();
 
                  /* Make a dummy nonterminal, a gensym.  */
                  sdummy = gensym ();


@@ -1429,7 +1470,6 @@ readgram (void)
                     just read can belong to it.  */
                  nrules++;
                  nitems++;
                     just read can belong to it.  */
                  nrules++;
                  nitems++;

-                 record_rule_line ();

                  p = XCALLOC (symbol_list, 1);
                  if (crule1)
                    crule1->next = p;
                  p = XCALLOC (symbol_list, 1);
                  if (crule1)
                    crule1->next = p;


@@ -1437,20 +1477,22 @@ readgram (void)
                    grammar = p;
                  p->sym = sdummy;
                  crule1 = XCALLOC (symbol_list, 1);
                    grammar = p;
                  p->sym = sdummy;
                  crule1 = XCALLOC (symbol_list, 1);

-                 p->next = crule1;

                  crule1->next = crule;
 
                  crule1->next = crule;
 

-                 /* insert the dummy generated by that rule into this rule.  */
+                 p->next = crule1;
+
+                 /* Insert the dummy generated by that rule into this
+                    rule.  */

                  nitems++;
                  p = XCALLOC (symbol_list, 1);
                  p->sym = sdummy;
                  p1->next = p;
                  p1 = p;
 
                  nitems++;
                  p = XCALLOC (symbol_list, 1);
                  p->sym = sdummy;
                  p1->next = p;
                  p1 = p;
 

-                 actionflag = 0;
+                 action_flag = 0;

                }
 
                }
 

-             if (t == IDENTIFIER)
+             if (t == tok_identifier)

                {
                  nitems++;
                  p = XCALLOC (symbol_list, 1);
                {
                  nitems++;
                  p = XCALLOC (symbol_list, 1);


@@ -1461,7 +1503,7 @@ readgram (void)
              else              /* handle an action.  */
                {
                  copy_action (crule, rulelength);
              else              /* handle an action.  */
                {
                  copy_action (crule, rulelength);

-                 actionflag = 1;
+                 action_flag = 1;

                  xactions++;   /* JF */
                }
              rulelength++;
                  xactions++;   /* JF */
                }
              rulelength++;


@@ -1472,30 +1514,28 @@ readgram (void)
          p1->next = p;
          p1 = p;
 
          p1->next = p;
          p1 = p;
 

-         if (t == PREC)
+         if (t == tok_prec)

            {
              complain (_("two @prec's in a row"));
              t = lex ();
              crule->ruleprec = symval;
              t = lex ();
            }
            {
              complain (_("two @prec's in a row"));
              t = lex ();
              crule->ruleprec = symval;
              t = lex ();
            }

-         if (t == GUARD)
+         if (t == tok_guard)

            {
              if (!semantic_parser)
            {
              if (!semantic_parser)

-               complain ("%s",
-                         _
-                         ("%guard present but %semantic_parser not specified"));
+               complain (_("%%guard present but %%semantic_parser not specified"));

 
              copy_guard (crule, rulelength);
              t = lex ();
            }
 
              copy_guard (crule, rulelength);
              t = lex ();
            }

-         else if (t == LEFT_CURLY)
+         else if (t == tok_left_curly)

            {
              /* This case never occurs -wjh */
            {
              /* This case never occurs -wjh */

-             if (actionflag)
+             if (action_flag)

                complain (_("two actions at end of one rule"));
              copy_action (crule, rulelength);
                complain (_("two actions at end of one rule"));
              copy_action (crule, rulelength);

-             actionflag = 1;
+             action_flag = 1;

              xactions++;       /* -wjh */
              t = lex ();
            }
              xactions++;       /* -wjh */
              t = lex ();
            }


@@ -1514,7 +1554,7 @@ readgram (void)
          /* Warn if there is no default for $$ but we need one.  */
          else if (!xactions && !first_rhs && lhs->type_name != 0)
            complain (_("empty rule for typed nonterminal, and no action"));
          /* Warn if there is no default for $$ but we need one.  */
          else if (!xactions && !first_rhs && lhs->type_name != 0)
            complain (_("empty rule for typed nonterminal, and no action"));

-         if (t == SEMICOLON)
+         if (t == tok_semicolon)

            t = lex ();
        }
 #if 0
            t = lex ();
        }
 #if 0


@@ -1524,31 +1564,31 @@ readgram (void)
        b) most of them scan forward until finding a next %
                thus they may swallow lots of intervening rules
 */
        b) most of them scan forward until finding a next %
                thus they may swallow lots of intervening rules
 */

-      else if (t == TOKEN)
+      else if (t == tok_token)

        {
          parse_token_decl (token_sym, nterm_sym);
          t = lex ();
        }
        {
          parse_token_decl (token_sym, nterm_sym);
          t = lex ();
        }

-      else if (t == NTERM)
+      else if (t == tok_nterm)

        {
          parse_token_decl (nterm_sym, token_sym);
          t = lex ();
        }
        {
          parse_token_decl (nterm_sym, token_sym);
          t = lex ();
        }

-      else if (t == TYPE)
+      else if (t == tok_type)

        {
          t = get_type ();
        }
        {
          t = get_type ();
        }

-      else if (t == UNION)
+      else if (t == tok_union)

        {
          parse_union_decl ();
          t = lex ();
        }
        {
          parse_union_decl ();
          t = lex ();
        }

-      else if (t == EXPECT)
+      else if (t == tok_expect)

        {
          parse_expect_decl ();
          t = lex ();
        }
        {
          parse_expect_decl ();
          t = lex ();
        }

-      else if (t == START)
+      else if (t == tok_start)

        {
          parse_start_decl ();
          t = lex ();
        {
          parse_start_decl ();
          t = lex ();


@@ -1557,7 +1597,7 @@ readgram (void)
 
       else
        {
 
       else
        {

-         complain (_("invalid input: %s"), token_buffer);
+         complain (_("invalid input: %s"), quote (token_buffer));

          t = lex ();
        }
     }
          t = lex ();
        }
     }


@@ -1570,17 +1610,6 @@ readgram (void)
   if (nrules == 0)
     fatal (_("no rules in the input grammar"));
 
   if (nrules == 0)
     fatal (_("no rules in the input grammar"));
 

-  if (typed == 0               /* JF put out same default YYSTYPE as YACC does */
-      && !value_components_used)
-    {
-      /* We used to use `unsigned long' as YYSTYPE on MSDOS,
-         but it seems better to be consistent.
-         Most programs should declare their own type anyway.  */
-      fprintf (fattrs, "#ifndef YYSTYPE\n#define YYSTYPE int\n#endif\n");
-      if (fdefines)
-       fprintf (fdefines, "#ifndef YYSTYPE\n#define YYSTYPE int\n#endif\n");
-    }
-

   /* Report any undefined symbols and consider them nonterminals.  */
 
   for (bp = firstsymbol; bp; bp = bp->next)
   /* Report any undefined symbols and consider them nonterminals.  */
 
   for (bp = firstsymbol; bp; bp = bp->next)


@@ -1588,13 +1617,32 @@ readgram (void)
       {
        complain (_
                  ("symbol %s is used, but is not defined as a token and has no rules"),
       {
        complain (_
                  ("symbol %s is used, but is not defined as a token and has no rules"),

-bp->tag);
+                 bp->tag);

        bp->class = nterm_sym;
        bp->value = nvars++;
       }
 
   ntokens = nsyms - nvars;
 }
        bp->class = nterm_sym;
        bp->value = nvars++;
       }
 
   ntokens = nsyms - nvars;
 }

+
+/* At the end of the grammar file, some C source code must
+   be stored. It is going to be associated to the epilogue
+   directive.  */
+static void
+read_additionnal_code (void)
+{
+  char c;
+  struct obstack el_obstack;
+
+  obstack_init (&el_obstack);
+
+  while ((c = getc (finput)) != EOF)
+    obstack_1grow (&el_obstack, c);
+
+  obstack_1grow (&el_obstack, 0);
+  muscle_insert ("epilogue", obstack_finish (&el_obstack));
+}
+

 \f
 /*--------------------------------------------------------------.
 | For named tokens, but not literal ones, define the name.  The |
 \f
 /*--------------------------------------------------------------.
 | For named tokens, but not literal ones, define the name.  The |


@@ -1602,7 +1650,7 @@ bp->tag);
 `--------------------------------------------------------------*/
 
 static void
 `--------------------------------------------------------------*/
 
 static void

-output_token_defines (FILE *file)
+output_token_defines (struct obstack *oout)

 {
   bucket *bp;
   char *cp, *symbol;
 {
   bucket *bp;
   char *cp, *symbol;


@@ -1635,14 +1683,53 @@ output_token_defines (FILE *file)
       if (c != '\0')
        continue;
 
       if (c != '\0')
        continue;
 

-      fprintf (file, "#define\t%s\t%d\n", symbol,
-              ((translations && !rawtoknumflag)
-               ? bp->user_token_number : bp->value));
+      obstack_fgrow2 (oout, "# define\t%s\t%d\n",
+                     symbol, bp->user_token_number);

       if (semantic_parser)
       if (semantic_parser)

-       fprintf (file, "#define\tT%s\t%d\n", symbol, bp->value);
+       /* FIXME: This is certainly dead wrong, and should be just as
+          above. --akim.  */
+       obstack_fgrow2 (oout, "# define\tT%s\t%d\n", symbol, bp->value);

     }
     }

+}
+

 
 

-  putc ('\n', file);
+/*------------------------------------------------------------------.
+| Set TOKEN_TRANSLATIONS.  Check that no two symbols share the same |
+| number.                                                           |
+`------------------------------------------------------------------*/
+
+static void
+token_translations_init (void)
+{
+  bucket *bp = NULL;
+  int i;
+
+  token_translations = XCALLOC (short, max_user_token_number + 1);
+
+  /* Initialize all entries for literal tokens to 2, the internal
+     token number for $undefined., which represents all invalid
+     inputs.  */
+  for (i = 0; i <= max_user_token_number; i++)
+    token_translations[i] = 2;
+
+  for (bp = firstsymbol; bp; bp = bp->next)
+    {
+      /* Non-terminal? */
+      if (bp->value >= ntokens)
+       continue;
+      /* A token string alias? */
+      if (bp->user_token_number == SALIAS)
+       continue;
+
+      assert (bp->user_token_number != SUNDEF);
+
+      /* A token which translation has already been set? */
+      if (token_translations[bp->user_token_number] != 2)
+       complain (_("tokens %s and %s both assigned number %d"),
+                 tags[token_translations[bp->user_token_number]],
+                 bp->tag, bp->user_token_number);
+      token_translations[bp->user_token_number] = bp->value;
+    }

 }
 
 
 }
 
 


@@ -1655,22 +1742,21 @@ output_token_defines (FILE *file)
 static void
 packsymbols (void)
 {
 static void
 packsymbols (void)
 {

-  bucket *bp;
+  bucket *bp = NULL;

   int tokno = 1;
   int tokno = 1;

-  int i;

   int last_user_token_number;
   static char DOLLAR[] = "$";
 
   int last_user_token_number;
   static char DOLLAR[] = "$";
 

-  /* int lossage = 0; JF set but not used */
-

   tags = XCALLOC (char *, nsyms + 1);
   tags = XCALLOC (char *, nsyms + 1);

-  tags[0] = DOLLAR;

   user_toknums = XCALLOC (short, nsyms + 1);
   user_toknums = XCALLOC (short, nsyms + 1);

-  user_toknums[0] = 0;

 
   sprec = XCALLOC (short, nsyms);
   sassoc = XCALLOC (short, nsyms);
 
 
   sprec = XCALLOC (short, nsyms);
   sassoc = XCALLOC (short, nsyms);
 

+  /* The EOF token. */
+  tags[0] = DOLLAR;
+  user_toknums[0] = 0;
+

   max_user_token_number = 256;
   last_user_token_number = 256;
 
   max_user_token_number = 256;
   last_user_token_number = 256;
 


@@ -1723,7 +1809,7 @@ packsymbols (void)
 
       if (bp->class == token_sym)
        {
 
       if (bp->class == token_sym)
        {

-         if (translations && !(bp->user_token_number))
+         if (bp->user_token_number == SUNDEF)

            bp->user_token_number = ++last_user_token_number;
          if (bp->user_token_number > max_user_token_number)
            max_user_token_number = bp->user_token_number;
            bp->user_token_number = ++last_user_token_number;
          if (bp->user_token_number > max_user_token_number)
            max_user_token_number = bp->user_token_number;


@@ -1733,73 +1819,74 @@ packsymbols (void)
       user_toknums[bp->value] = bp->user_token_number;
       sprec[bp->value] = bp->prec;
       sassoc[bp->value] = bp->assoc;
       user_toknums[bp->value] = bp->user_token_number;
       sprec[bp->value] = bp->prec;
       sassoc[bp->value] = bp->assoc;

-

     }
 
     }
 

-  if (translations)
-    {
-      int j;
-
-      token_translations = XCALLOC (short, max_user_token_number + 1);
-
-      /* initialize all entries for literal tokens to 2, the internal
-         token number for $undefined., which represents all invalid
-         inputs.  */
-      for (j = 0; j <= max_user_token_number; j++)
-       token_translations[j] = 2;
-
-      for (bp = firstsymbol; bp; bp = bp->next)
-       {
-         if (bp->value >= ntokens)
-           continue;           /* non-terminal */
-         if (bp->user_token_number == SALIAS)
-           continue;
-         if (token_translations[bp->user_token_number] != 2)
-           complain (_("tokens %s and %s both assigned number %d"),
-                     tags[token_translations[bp->user_token_number]],
-                     bp->tag, bp->user_token_number);
-         token_translations[bp->user_token_number] = bp->value;
-       }
-    }
+  token_translations_init ();

 
   error_token_number = errtoken->value;
 
 
   error_token_number = errtoken->value;
 

-  if (!noparserflag)
-    output_token_defines (ftable);
-

   if (startval->class == unknown_sym)
     fatal (_("the start symbol %s is undefined"), startval->tag);
   else if (startval->class == token_sym)
     fatal (_("the start symbol %s is a token"), startval->tag);
 
   start_symbol = startval->value;
   if (startval->class == unknown_sym)
     fatal (_("the start symbol %s is undefined"), startval->tag);
   else if (startval->class == token_sym)
     fatal (_("the start symbol %s is a token"), startval->tag);
 
   start_symbol = startval->value;

+}
+
+
+/*-----------------------------------.
+| Output definition of token names.  |
+`-----------------------------------*/

 
 

-  if (definesflag)
+static void
+symbols_output (void)
+{
+  {
+    struct obstack tokendefs;
+    obstack_init (&tokendefs);
+    output_token_defines (&tokendefs);
+    obstack_1grow (&tokendefs, 0);
+    muscle_insert ("tokendef", xstrdup (obstack_finish (&tokendefs)));
+    obstack_free (&tokendefs, NULL);
+  }
+
+#if 0
+  if (!no_parser_flag)
+    output_token_defines (&table_obstack);
+#endif
+
+  if (defines_flag)

     {
     {

-      output_token_defines (fdefines);
+      output_token_defines (&defines_obstack);

 
       if (!pure_parser)
        {
          if (spec_name_prefix)
 
       if (!pure_parser)
        {
          if (spec_name_prefix)

-           fprintf (fdefines, "\nextern YYSTYPE %slval;\n",
-                    spec_name_prefix);
+           obstack_fgrow1 (&defines_obstack, "\nextern YYSTYPE %slval;\n",
+                           spec_name_prefix);

          else
          else

-           fprintf (fdefines, "\nextern YYSTYPE yylval;\n");
+           obstack_sgrow (&defines_obstack,
+                                "\nextern YYSTYPE yylval;\n");

        }
 
       if (semantic_parser)
        }
 
       if (semantic_parser)

-       for (i = ntokens; i < nsyms; i++)
-         {
-           /* don't make these for dummy nonterminals made by gensym.  */
-           if (*tags[i] != '@')
-             fprintf (fdefines, "#define\tNT%s\t%d\n", tags[i], i);
-         }
+       {
+         int i;
+
+         for (i = ntokens; i < nsyms; i++)
+           {
+             /* don't make these for dummy nonterminals made by gensym.  */
+             if (*tags[i] != '@')
+               obstack_fgrow2 (&defines_obstack,
+                               "# define\tNT%s\t%d\n", tags[i], i);
+           }

 #if 0
 #if 0

-      /* `fdefines' is now a temporary file, so we need to copy its
-         contents in `done', so we can't close it here.  */
-      fclose (fdefines);
-      fdefines = NULL;
+         /* `fdefines' is now a temporary file, so we need to copy its
+            contents in `done', so we can't close it here.  */
+         fclose (fdefines);
+         fdefines = NULL;

 #endif
 #endif

+       }

     }
 }
 
     }
 }
 


@@ -1819,11 +1906,7 @@ packgram (void)
   bucket *ruleprec;
 
   ritem = XCALLOC (short, nitems + 1);
   bucket *ruleprec;
 
   ritem = XCALLOC (short, nitems + 1);

-  rlhs = XCALLOC (short, nrules) - 1;
-  rrhs = XCALLOC (short, nrules) - 1;
-  rprec = XCALLOC (short, nrules) - 1;
-  rprecsym = XCALLOC (short, nrules) - 1;
-  rassoc = XCALLOC (short, nrules) - 1;
+  rule_table = XCALLOC (rule_t, nrules) - 1;

 
   itemno = 0;
   ruleno = 1;
 
   itemno = 0;
   ruleno = 1;


@@ -1831,8 +1914,9 @@ packgram (void)
   p = grammar;
   while (p)
     {
   p = grammar;
   while (p)
     {

-      rlhs[ruleno] = p->sym->value;
-      rrhs[ruleno] = itemno;
+      rule_table[ruleno].lhs = p->sym->value;
+      rule_table[ruleno].rhs = itemno;
+      rule_table[ruleno].line = p->sym->line;

       ruleprec = p->ruleprec;
 
       p = p->next;
       ruleprec = p->ruleprec;
 
       p = p->next;


@@ -1843,8 +1927,8 @@ packgram (void)
             of the last token in it.  */
          if (p->sym->class == token_sym)
            {
             of the last token in it.  */
          if (p->sym->class == token_sym)
            {

-             rprec[ruleno] = p->sym->prec;
-             rassoc[ruleno] = p->sym->assoc;
+             rule_table[ruleno].prec = p->sym->prec;
+             rule_table[ruleno].assoc = p->sym->assoc;

            }
          if (p)
            p = p->next;
            }
          if (p)
            p = p->next;


@@ -1854,9 +1938,9 @@ packgram (void)
          the specified symbol's precedence replaces the default.  */
       if (ruleprec)
        {
          the specified symbol's precedence replaces the default.  */
       if (ruleprec)
        {

-         rprec[ruleno] = ruleprec->prec;
-         rassoc[ruleno] = ruleprec->assoc;
-         rprecsym[ruleno] = ruleprec->value;
+         rule_table[ruleno].prec = ruleprec->prec;
+         rule_table[ruleno].assoc = ruleprec->assoc;
+         rule_table[ruleno].precsym = ruleprec->value;

        }
 
       ritem[itemno++] = -ruleno;
        }
 
       ritem[itemno++] = -ruleno;


@@ -1871,10 +1955,10 @@ packgram (void)
 \f
 /*-------------------------------------------------------------------.
 | Read in the grammar specification and record it in the format      |
 \f
 /*-------------------------------------------------------------------.
 | Read in the grammar specification and record it in the format      |

-| described in gram.h.  All guards are copied into the FGUARD file   |
-| and all actions into FACTION, in each case forming the body of a C |
-| function (YYGUARD or YYACTION) which contains a switch statement   |
-| to decide which guard or action to execute.                        |
+| described in gram.h.  All guards are copied into the GUARD_OBSTACK |
+| and all actions into ACTION_OBSTACK, in each case forming the body |
+| of a C function (YYGUARD or YYACTION) which contains a switch      |
+| statement to decide which guard or action to execute.              |

 `-------------------------------------------------------------------*/
 
 void
 `-------------------------------------------------------------------*/
 
 void


@@ -1883,107 +1967,59 @@ reader (void)
   start_flag = 0;
   startval = NULL;             /* start symbol not specified yet. */
 
   start_flag = 0;
   startval = NULL;             /* start symbol not specified yet. */
 

-#if 0
-  /* initially assume token number translation not needed.  */
-  translations = 0;
-#endif
-  /* Nowadays translations is always set to 1, since we give `error' a
-     user-token-number to satisfy the Posix demand for YYERRCODE==256.
-   */
-  translations = 1;
-

   nsyms = 1;
   nvars = 0;
   nrules = 0;
   nitems = 0;
   nsyms = 1;
   nvars = 0;
   nrules = 0;
   nitems = 0;

-  rline_allocated = 10;
-  rline = XCALLOC (short, rline_allocated);

 
   typed = 0;
   lastprec = 0;
 
 
   typed = 0;
   lastprec = 0;
 

-  gensym_count = 0;
-

   semantic_parser = 0;
   pure_parser = 0;
   semantic_parser = 0;
   pure_parser = 0;

-  yylsp_needed = 0;

 
   grammar = NULL;
 
 
   grammar = NULL;
 

-  init_lex ();
+  lex_init ();

   lineno = 1;
 
   lineno = 1;
 

+  /* Initialize the muscle obstack.  */
+  obstack_init (&muscle_obstack);
+

   /* Initialize the symbol table.  */
   tabinit ();
   /* Initialize the symbol table.  */
   tabinit ();

+

   /* Construct the error token */
   errtoken = getsym ("error");
   errtoken->class = token_sym;
   errtoken->user_token_number = 256;   /* Value specified by POSIX.  */
   /* Construct the error token */
   errtoken = getsym ("error");
   errtoken->class = token_sym;
   errtoken->user_token_number = 256;   /* Value specified by POSIX.  */

+

   /* Construct a token that represents all undefined literal tokens.
      It is always token number 2.  */
   undeftoken = getsym ("$undefined.");
   undeftoken->class = token_sym;
   undeftoken->user_token_number = 2;
 
   /* Construct a token that represents all undefined literal tokens.
      It is always token number 2.  */
   undeftoken = getsym ("$undefined.");
   undeftoken->class = token_sym;
   undeftoken->user_token_number = 2;
 

-  /* Read the declaration section.  Copy %{ ... %} groups to FTABLE
-     and FDEFINES file.  Also notice any %token, %left, etc. found
-     there.  */
-  putc ('\n', ftable);
-  fprintf (ftable, "\
-/* %s, made from %s\n\
-   by GNU bison %s.  */\n\
-\n", noparserflag ? "Bison-generated parse tables" : "A Bison parser", infile, VERSION);
-
-  fputs ("#define YYBISON 1  /* Identify Bison output.  */\n\n", ftable);
+  /* Read the declaration section.  Copy %{ ... %} groups to
+     TABLE_OBSTACK and FDEFINES file.  Also notice any %token, %left,
+     etc. found there.  */

   read_declarations ();
   read_declarations ();

-  /* Start writing the guard and action files, if they are needed.  */
-  output_headers ();

   /* Read in the grammar, build grammar in list form.  Write out
      guards and actions.  */
   readgram ();
   /* Read in the grammar, build grammar in list form.  Write out
      guards and actions.  */
   readgram ();

+  /* Some C code is given at the end of the grammar file. */
+  read_additionnal_code ();
+

   /* Now we know whether we need the line-number stack.  If we do,
   /* Now we know whether we need the line-number stack.  If we do,

-     write its type into the .tab.h file.  */
-  if (fdefines)
-    reader_output_yylsp (fdefines);
-  /* Write closing delimiters for actions and guards.  */
-  output_trailers ();
-  if (yylsp_needed)
-    fputs ("#define YYLSP_NEEDED\n\n", ftable);
+     write its type into the .tab.h file.
+     This is no longer need with header skeleton.  */
+

   /* Assign the symbols their symbol numbers.  Write #defines for the
      token symbols into FDEFINES if requested.  */
   packsymbols ();
   /* Assign the symbols their symbol numbers.  Write #defines for the
      token symbols into FDEFINES if requested.  */
   packsymbols ();

+  symbols_output ();

   /* Convert the grammar into the format described in gram.h.  */
   packgram ();
   /* Convert the grammar into the format described in gram.h.  */
   packgram ();

-  /* Free the symbol table data structure since symbols are now all
-     referred to by symbol number.  */
-  free_symtab ();
-}
-
-
-void
-reader_output_yylsp (FILE *f)
-{
-  if (yylsp_needed)
-    fputs ("\
-\n\
-#ifndef YYLTYPE\n\
-typedef\n\
-  struct yyltype\n\
-\
-    {\n\
-      int timestamp;\n\
-      int first_line;\n\
-      int first_column;\
-\n\
-      int last_line;\n\
-      int last_column;\n\
-      char *text;\n\
-   }\n\
-\
-  yyltype;\n\
-\n\
-#define YYLTYPE yyltype\n\
-#endif\n\
-\n",
-          f);
+  /* Output the headers. */
+  symbols_output ();

 }
 }