* src/output.c (output): Topological sort of the functions, in

[bison.git] / src / main.c

diff --git a/src/main.c b/src/main.c
index 3ef6683ecaf58d0478efeb3a24deb9ec32c768db..1c581c8e8d57abc3cb4a5a148d64583945ddbbfd 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -1,111 +1,127 @@
 /* Top level entry point of bison,
 /* Top level entry point of bison,

-   Copyright (C) 1984, 1986, 1989, 1992, 1995 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000
+   Free Software Foundation, Inc.

 
 

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

 
 

-Bison is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+   Bison is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.

 
 

-Bison is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+   Bison is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.

 
 

-You should have received a copy of the GNU General Public License
-along with Bison; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with Bison; see the file COPYING.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */

 
 
 
 

-#include <stdio.h>

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

-#include "machine.h"   /* for MAXSHORT */
-
-extern int lineno;
-extern int verboseflag;
+#include "getargs.h"
+#include "files.h"
+#include "complain.h"
+#include "derives.h"
+#include "output.h"

 
 

+#if 0                          /* XXX currently unused.  */

 /* Nonzero means failure has been detected; don't write a parser file.  */
 /* Nonzero means failure has been detected; don't write a parser file.  */

-int failure;
+static int failure;
+#endif

 
 /* The name this program was run with, for messages.  */
 char *program_name;
 
 
 /* The name this program was run with, for messages.  */
 char *program_name;
 

-extern void getargs(), openfiles(), reader(), reduce_grammar();
-extern void set_derives(), set_nullable(), generate_states();
-extern void lalr(), initialize_conflicts(), verbose(), terse();
-extern void output(), done();
+extern char *printable_version PARAMS ((int));
+
+extern void openfiles PARAMS ((void));
+extern void reader PARAMS ((void));
+extern void reduce_grammar PARAMS ((void));
+extern void set_nullable PARAMS ((void));
+extern void free_nullable PARAMS ((void));
+extern void generate_states PARAMS ((void));
+extern void lalr PARAMS ((void));
+extern void initialize_conflicts PARAMS ((void));
+extern void finalize_conflicts PARAMS ((void));
+extern void verbose PARAMS ((void));
+extern void terse PARAMS ((void));

 
 
 /* VMS complained about using `int'.  */
 
 int
 
 
 /* VMS complained about using `int'.  */
 
 int

-main(argc, argv)
-     int argc;
-     char *argv[];
+main (int argc, char *argv[])

 {
   program_name = argv[0];
   setlocale (LC_ALL, "");
   bindtextdomain (PACKAGE, LOCALEDIR);
   textdomain (PACKAGE);
 
 {
   program_name = argv[0];
   setlocale (LC_ALL, "");
   bindtextdomain (PACKAGE, LOCALEDIR);
   textdomain (PACKAGE);
 

-  failure = 0;

   lineno = 0;
   lineno = 0;

-  getargs(argc, argv);
-  openfiles();
+  getargs (argc, argv);
+
+  /* Be ready to clean up if we exit. */
+  atexit (done);
+
+  openfiles ();

 
 

-  /* read the input.  Copy some parts of it to fguard, faction, ftable and fattrs.
-     In file reader.c.
-     The other parts are recorded in the grammar; see gram.h.  */
-  reader();
-  if (failure)
-       done(failure);
+  /* Read the input.  Copy some parts of it to FGUARD, FACTION, FTABLE
+     and FATTRS.  In file reader.c.  The other parts are recorded in
+     the grammar; see gram.h.  */
+  reader ();
+  if (complain_message_count)
+    exit (1);

 
   /* find useless nonterminals and productions and reduce the grammar.  In
      file reduce.c */
 
   /* find useless nonterminals and productions and reduce the grammar.  In
      file reduce.c */

-  reduce_grammar();
+  reduce_grammar ();

 
   /* record other info about the grammar.  In files derives and nullable.  */
 
   /* record other info about the grammar.  In files derives and nullable.  */

-  set_derives();
-  set_nullable();
+  set_derives ();
+  set_nullable ();

 
   /* convert to nondeterministic finite state machine.  In file LR0.
      See state.h for more info.  */
 
   /* convert to nondeterministic finite state machine.  In file LR0.
      See state.h for more info.  */

-  generate_states();
+  generate_states ();

 
   /* make it deterministic.  In file lalr.  */
 
   /* make it deterministic.  In file lalr.  */

-  lalr();
+  lalr ();

 
 

-  /* Find and record any conflicts: places where one token of lookahead is not
-     enough to disambiguate the parsing.  In file conflicts.
-     Also resolve s/r conflicts based on precedence declarations.  */
-  initialize_conflicts();
+  /* Find and record any conflicts: places where one token of
+     lookahead is not enough to disambiguate the parsing.  In file
+     conflicts.  Also resolve s/r conflicts based on precedence
+     declarations.  */
+  initialize_conflicts ();

 
 

-  /* print information about results, if requested.  In file print. */
+  /* Print information about results, if requested.  In file print.
+     */

   if (verboseflag)
   if (verboseflag)

-    verbose();
+    verbose ();

   else
   else

-    terse();
+    terse ();

 
 

-  /* output the tables and the parser to ftable.  In file output. */
-  output();
-  done(failure);
-  return failure;
-}
-\f
-/* functions to report errors which prevent a parser from being generated */
+  /* Output the tables and the parser to ftable.  In file output.  */
+  output ();

 
 

+  finalize_conflicts ();
+  free_nullable ();
+  free_derives ();

 
 

+  exit (complain_message_count ? 1 : 0);
+}
+\f

 /* Return a string containing a printable version of C:
    either C itself, or the corresponding \DDD code.  */
 
 char *
 /* Return a string containing a printable version of C:
    either C itself, or the corresponding \DDD code.  */
 
 char *

-printable_version(c)
-     int c;
+printable_version (int c)

 {
   static char buf[10];
   if (c < ' ' || c >= '\177')
 {
   static char buf[10];
   if (c < ' ' || c >= '\177')

-    sprintf(buf, "\\%o", c);
+    sprintf (buf, "\\%o", c);

   else
     {
       buf[0] = c;
   else
     {
       buf[0] = c;


@@ -114,130 +130,11 @@ printable_version(c)
   return buf;
 }
 
   return buf;
 }
 

-/* Generate a string from the integer I.
-   Return a ptr to internal memory containing the string.  */
-
-char *
-int_to_string(i)
-     int i;
-{
-  static char buf[20];
-  sprintf(buf, "%d", i);
-  return buf;
-}
-
-/* Print the message S for a fatal error.  */
-
-void
-fatal(s)
-     char *s;
-{
-  extern char *infile;
-
-  if (infile == 0)
-    fprintf(stderr, _("fatal error: %s\n"), s);
-  else
-    fprintf(stderr, _("\"%s\", line %d: %s\n"), infile, lineno, s);
-  done(1);
-}
-
-
-/* Print a message for a fatal error.  Use FMT to construct the message
-   and incorporate string X1.  */
-
-void
-fatals(fmt, x1)
-     char *fmt, *x1;
-{
-  char buffer[200];
-  sprintf(buffer, fmt, x1);
-  fatal(buffer);
-}
-
-/* Print a warning message S.  */
-
-void
-warn(s)
-     char *s;
-{
-  extern char *infile;
-
-  if (infile == 0)
-    fprintf(stderr, _("error: %s\n"), s);
-  else
-    fprintf(stderr, _("(\"%s\", line %d) error: %s\n"),
-           infile, lineno, s);
-
-  failure = 1;
-}
-
-/* Print a warning message containing the string for the integer X1.
-   The message is given by the format FMT.  */
-
-void
-warni(fmt, x1)
-     char *fmt;
-     int x1;
-{
-  char buffer[200];
-  sprintf(buffer, fmt, x1);
-  warn(buffer);
-}
-
-/* Print a warning message containing the string X1.
-   The message is given by the format FMT.  */
-
-void
-warns(fmt, x1)
-     char *fmt, *x1;
-{
-  char buffer[200];
-  sprintf(buffer, fmt, x1);
-  warn(buffer);
-}
-
-/* Print a warning message containing the two strings X1 and X2.
-       The message is given by the format FMT.  */
-
-void
-warnss(fmt, x1, x2)
-     char *fmt, *x1, *x2;
-{
-  char buffer[200];
-  sprintf(buffer, fmt, x1, x2);
-  warn(buffer);
-}
-
-/* Print a warning message containing the 3 strings X1, X2, X3.
-   The message is given by the format FMT.  */
-
-void
-warnsss(fmt, x1, x2, x3)
-     char *fmt, *x1, *x2, *x3;
-{
-  char buffer[200];
-  sprintf(buffer, fmt, x1, x2, x3);
-  warn(buffer);
-}
-
-/* Print a message for the fatal occurence of more than MAXSHORT
-   instances of whatever is denoted by the string S.  */
-
-void
-toomany(s)
-     char *s;
-{
-  char buffer[200];
-  sprintf(buffer, _("limit of %d exceeded, too many %s"), MAXSHORT, s);
-  fatal(buffer);
-}
-

 /* Abort for an internal error denoted by string S.  */
 
 void
 /* Abort for an internal error denoted by string S.  */
 
 void

-berror(s)
-     char *s;
+berror (const char *s)

 {
 {

-  fprintf(stderr, _("internal error, %s\n"), s);
-  abort();
+  fprintf (stderr, _("%s: internal error: %s\n"), program_name, s);
+  abort ();

 }
 }