--- /dev/null
+/* Common parts between scan-code.l and scan-gram.l.
+
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+ This file is part of Bison, the GNU Compiler Compiler.
+
+ This program 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 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301 USA
+*/
+
+#ifndef FLEX_PREFIX
+# error "FLEX_PREFIX not defined"
+#endif
+
+#include "system.h"
+
+/* Pacify "gcc -Wmissing-prototypes" when flex 2.5.31 is used. */
+int FLEX_PREFIX (get_lineno) (void);
+FILE *FLEX_PREFIX (get_in) (void);
+FILE *FLEX_PREFIX (get_out) (void);
+int FLEX_PREFIX (get_leng) (void);
+char *FLEX_PREFIX (get_text) (void);
+void FLEX_PREFIX (set_lineno) (int);
+void FLEX_PREFIX (set_in) (FILE *);
+void FLEX_PREFIX (set_out) (FILE *);
+int FLEX_PREFIX (get_debug) (void);
+void FLEX_PREFIX (set_debug) (int);
+int FLEX_PREFIX (lex_destroy) (void);
+
+#define last_string FLEX_PREFIX (last_string)
+
+/* It seems to be a nice "feature" of Flex that one cannot use yytext,
+ yyleng etc. when a prefix is given, since there is no longer a
+ #define, but rather the token is actually changed in the output.
+ */
+#define yyleng FLEX_PREFIX (leng)
+#define yytext FLEX_PREFIX (text)
+
+/* OBSTACK_FOR_STRING -- Used to store all the characters that we need to
+ keep (to construct ID, STRINGS etc.). Use the following macros to
+ use it.
+
+ Use STRING_GROW to append what has just been matched, and
+ STRING_FINISH to end the string (it puts the ending 0).
+ STRING_FINISH also stores this string in LAST_STRING, which can be
+ used, and which is used by STRING_FREE to free the last string. */
+
+static struct obstack obstack_for_string;
+
+#define STRING_GROW \
+ obstack_grow (&obstack_for_string, yytext, yyleng)
+
+#define STRING_FINISH \
+ do { \
+ obstack_1grow (&obstack_for_string, '\0'); \
+ last_string = obstack_finish (&obstack_for_string); \
+ } while (0)
+
+#define STRING_FREE \
+ obstack_free (&obstack_for_string, FLEX_PREFIX (last_string))