/* Scan Bison Skeletons. -*- C -*-
- Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software
+ Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
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. */
+ Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
%option nodefault noyywrap nounput never-interactive debug
%option prefix="skel_" outfile="lex.yy.c"
%{
-#include "system.h"
+/* Work around a bug in flex 2.5.31. See Debian bug 333231
+ <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>. */
+#undef skel_wrap
+#define skel_wrap() 1
+#define FLEX_NO_OBSTACK
+#define FLEX_PREFIX(Id) skel_ ## Id
+#include "flex-scanner.h"
+
+#include <dirname.h>
#include <error.h>
#include <quotearg.h>
+#include "complain.h"
#include "getargs.h"
#include "files.h"
+#include "scan-skel.h"
int skel_lex (void);
#define QPUTS(String) \
- fputs (quotearg_style (c_quoting_style, (String)), yyout)
+ fputs (quotearg_style (c_quoting_style, String), yyout)
+static char *decode_at_digraphs (char *in);
%}
%%
%}
"@output ".*\n {
- char const *filename = yytext + sizeof "@output " - 1;
+ char *file_name = yytext + sizeof "@output " - 1;
yytext[yyleng - 1] = '\0';
-
- if (*filename == '@')
+ if (outname)
{
- if (strcmp (filename, "@output_header_name@") == 0)
- filename = spec_defines_file;
- else if (strcmp (filename, "@output_parser_name@") == 0)
- filename = parser_file_name;
- else
- abort ();
+ free (outname);
+ xfclose (yyout);
}
-
- XFREE (outname);
- outname = xstrdup (filename);
- xfclose (yyout);
+ outname = decode_at_digraphs (file_name);
+ output_file_name_check (outname);
yyout = xfopen (outname, "w");
lineno = 1;
}
"@oline@" fprintf (yyout, "%d", lineno + 1);
"@ofile@" QPUTS (outname);
-"@output_parser_name@" QPUTS (parser_file_name);
-"@output_header_name@" QPUTS (spec_defines_file);
+"@dir_prefix@" QPUTS (dir_prefix);
+
+"@basename(".*"@)" {
+ char *file_name = yytext + sizeof "@basename " - 1;
+ yytext[yyleng - 2] = '\0';
+ file_name = decode_at_digraphs (file_name);
+ fputs (last_component (file_name), yyout);
+ free (file_name);
+}
-"@" abort ();
+ /* This pattern must not match more than the previous @ patterns. */
+@[^{}@\n]* fatal ("invalid @ in skeleton: %s", yytext);
\n lineno++; ECHO;
[^@\n]+ ECHO;
-<<EOF>> xfclose (yyout); free (outname); return EOF;
+<<EOF>> {
+ if (outname)
+ {
+ free (outname);
+ xfclose (yyout);
+ }
+ return EOF;
+}
%%
/*------------------------.
| Scan a Bison skeleton. |
`------------------------*/
-void scan_skel (FILE *);
-
void
scan_skel (FILE *in)
{
skel__flex_debug = trace_flag & trace_skeleton;
skel_lex ();
/* Reclaim Flex's buffers. */
- yy_delete_buffer (YY_CURRENT_BUFFER);
+ yylex_destroy ();
+}
+
+static char *
+decode_at_digraphs (char *in)
+{
+ char *out_start = xnmalloc (strlen (in)+1, sizeof *out_start);
+ char *out;
+ for (out = out_start; *in != '\0'; ++in, ++out)
+ {
+ if (*in == '@')
+ {
+ switch (*++in)
+ {
+ case '@': *out = '@'; break;
+ case '{': *out = '['; break;
+ case '}': *out = ']'; break;
+ default:
+ if (*in != '\0')
+ in[1] = '\0';
+ fatal ("invalid @ in skeleton: %s", in-1);
+ break;
+ }
+ }
+ else
+ *out = *in;
+ }
+ *out = '\0';
+ return out_start;
}