* src/reader.h: New file.

Propagate its use instead of tedious list of `extern' and
prototypes.
* src/reader.c: Formatting changes, topological sort,
s/register//.

src/reader.h

@@ -0,0 +1,39 @@
+/* Input parser for bison
+   Copyright (C) 2000 Free Software Foundation, Inc.
+
+   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 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, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef READER_H_
+# define READER_H_
+
+/* 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.  */
+
+extern void reader PARAMS ((void));
+
+
+extern void reader_output_yylsp PARAMS ((FILE *));
+
+extern int lineno;
+extern char **tags;
+extern short *user_toknums;
+
+#endif /* !READER_H_ */