* src/conflicts.c (conflicts_output): Don't output rules never

[bison.git] / src / getargs.c

diff --git a/src/getargs.c b/src/getargs.c
index e337a54b081843a15e064727c172a1924fb1e15d..9f6aef4a57a907c6c99824f4b0caa7e6af30d35e 100644 (file)
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -1,170 +1,410 @@
-/* Parse command line arguments for bison,
-   Copyright (C) 1984, 1986, 1989, 1992 Free Software Foundation, Inc.
+/* Parse command line arguments for bison.
+   Copyright 1984, 1986, 1989, 1992, 2000, 2001, 2002
+   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, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, 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 "getopt.h"

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

+#include "getopt.h"
+#include "argmatch.h"
+#include "complain.h"
+#include "getargs.h"

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

-int verboseflag;
-int definesflag;
-int debugflag;
-int nolinesflag;
-int noparserflag = 0;
-int toknumflag = 0;
-int rawtoknumflag = 0;
-char *spec_name_prefix; /* for -p.  */
-char *spec_file_prefix; /* for -b. */
-extern int fixed_outfiles;/* for -y */
-  
-void usage PARAMS((FILE *));
-void getargs PARAMS((int, char *[]));
+int debug_flag = 0;
+int defines_flag = 0;
+int locations_flag = 0;
+int no_lines_flag = 0;
+int no_parser_flag = 0;
+int report_flag = report_none;
+int token_table_flag = 0;
+int yacc_flag = 0;     /* for -y */
+int graph_flag = 0;
+int trace_flag = trace_none;
+
+const char *skeleton = NULL;
+const char *include = NULL;

 
 extern char *program_name;
 
 extern char *program_name;

-extern char *version_string;

 
 

-extern void warns PARAMS((char *, char *));    /* main.c */

 
 

-struct option longopts[] =
+/*---------------------.
+| --trace's handling.  |
+`---------------------*/
+
+static const char * const trace_args[] =

 {
 {

-  {"debug", 0, &debugflag, 1},
-  {"defines", 0, &definesflag, 1},
-  {"file-prefix", 1, 0, 'b'},
-  {"fixed-output-files", 0, &fixed_outfiles, 1},
-  {"help", 0, 0, 'h'},
-  {"name-prefix", 1, 0, 'p'}, /* was 'a';  apparently unused -wjh */
-  {"no-lines", 0, &nolinesflag, 1},
-  {"no-parser", 0, &noparserflag, 1},
-  {"output", 1, 0, 'o'},
-  {"output-file", 1, 0, 'o'},
-  {"raw", 0, &rawtoknumflag, 1},
-  {"token-table", 0, &toknumflag, 1},
-  {"verbose", 0, &verboseflag, 1},
-  {"version", 0, 0, 'V'},
-  {"yacc", 0, &fixed_outfiles, 1},
-  {0, 0, 0, 0}
+  /* In a series of synonyms, present the most meaningful first, so
+     that argmatch_valid be more readable.  */
+  "none       - no report",
+  "automaton  - contruction of the automaton",
+  "bitsets    - use of bitsets",
+  "grammar    - reading, reducing of the grammar",
+  "resource   - memory consumption (where available)",
+  "sets       - grammar sets: firsts, nullable etc.",
+  "time       - time consumption",
+  "tools      - m4 invocation and preserve the temporary file",
+  "all        - all of the above",
+  0

 };
 
 };
 

-void
+static const int trace_types[] =
+{
+  trace_none,
+  trace_automaton,
+  trace_bitsets,
+  trace_grammar,
+  trace_resource,
+  trace_sets,
+  trace_time,
+  trace_tools,
+  trace_all
+};
+
+
+static void
+trace_argmatch (char *args)
+{
+  ARGMATCH_ASSERT (trace_args, trace_types);
+  if (args)
+    {
+      args = strtok (args, ",");
+      do
+       {
+         int trace = XARGMATCH ("--trace", args,
+                                trace_args, trace_types);
+         if (trace == trace_none)
+           trace_flag = trace_none;
+         else
+           trace_flag |= trace;
+       }
+      while ((args = strtok (NULL, ",")));
+    }
+  else
+    trace_flag = trace_all;
+}
+
+
+/*----------------------.
+| --report's handling.  |
+`----------------------*/
+
+static const char * const report_args[] =
+{
+  /* In a series of synonyms, present the most meaningful first, so
+     that argmatch_valid be more readable.  */
+  "none",
+  "state", "states",
+  "itemset", "itemsets",
+  "lookahead", "lookaheads",
+  "solved",
+  "all",
+  0
+};
+
+static const int report_types[] =
+{
+  report_none,
+  report_states, report_states,
+  report_states | report_itemsets, report_states | report_itemsets,
+  report_states | report_lookaheads, report_states | report_lookaheads,
+  report_states | report_solved_conflicts,
+  report_all
+};
+
+
+static void
+report_argmatch (char *args)
+{
+  ARGMATCH_ASSERT (report_args, report_types);
+  args = strtok (args, ",");
+  do
+    {
+      int report = XARGMATCH ("--report", args,
+                             report_args, report_types);
+      if (report == report_none)
+       report_flag = report_none;
+      else
+       report_flag |= report;
+    }
+  while ((args = strtok (NULL, ",")));
+}
+
+/*---------------------------.
+| Display the help message.  |
+`---------------------------*/
+
+static void

 usage (FILE *stream)
 {
 usage (FILE *stream)
 {

+  /* Some efforts were made to ease the translators' task, please
+     continue.  */
+  fputs (_("\
+GNU bison generates parsers for LALR(1) grammars.\n"), stream);
+  putc ('\n', stream);
+

   fprintf (stream, _("\
   fprintf (stream, _("\

-Usage: %s [-dhklntvyV] [-b file-prefix] [-o outfile] [-p name-prefix]\n\
-       [--debug] [--defines] [--fixed-output-files] [--no-lines]\n\
-       [--verbose] [--version] [--help] [--yacc]\n\
-       [--no-parser] [--token-table]\n\
-       [--file-prefix=prefix] [--name-prefix=prefix]\n\
-       [--output=outfile] grammar-file\n\n\
-Report bugs to bug-bison@gnu.org\n"),
-          program_name);
+Usage: %s [OPTION]... FILE\n"), program_name);
+  putc ('\n', stream);
+
+  fputs (_("\
+If a long option shows an argument as mandatory, then it is mandatory\n\
+for the equivalent short option also.  Similarly for optional arguments.\n"),
+        stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Operation modes:\n\
+  -h, --help      display this help and exit\n\
+  -V, --version   output version information and exit\n\
+  -y, --yacc      emulate POSIX yacc\n"), stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Parser:\n\
+  -S, --skeleton=FILE        specify the skeleton to use\n\
+  -t, --debug                instrument the parser for debugging\n\
+      --locations            enable locations computation\n\
+  -p, --name-prefix=PREFIX   prepend PREFIX to the external symbols\n\
+  -l, --no-lines             don't generate `#line' directives\n\
+  -n, --no-parser            generate the tables only\n\
+  -k, --token-table          include a table of token names\n\
+"), stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Output:\n\
+  -d, --defines              also produce a header file\n\
+  -r, --report=THINGS        also produce details on the automaton\n\
+  -v, --verbose              same as `--report=state'\n\
+  -b, --file-prefix=PREFIX   specify a PREFIX for output files\n\
+  -o, --output=FILE          leave output to FILE\n\
+  -g, --graph                also produce a VCG description of the automaton\n\
+"), stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+THINGS is a list of comma separated words that can include:\n\
+  `state'        describe the states\n\
+  `itemset'      complete the core item sets with their closure\n\
+  `lookahead'    explicitly associate lookaheads to items\n\
+  `solved'       describe shift/reduce conflicts solving\n\
+  `all'          include all the above information\n\
+  `none'         disable the report\n\
+"), stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Report bugs to <bug-bison@gnu.org>.\n"), stream);

 }
 
 }
 

+
+/*------------------------------.
+| Display the version message.  |
+`------------------------------*/
+
+static void
+version (FILE *stream)
+{
+  /* Some efforts were made to ease the translators' task, please
+     continue.  */
+  fprintf (stream, _("bison (GNU Bison) %s"), VERSION);
+  putc ('\n', stream);
+  fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stream);
+  putc ('\n', stream);
+
+  fprintf (stream,
+          _("Copyright (C) %d Free Software Foundation, Inc.\n"), 2002);
+
+  fputs (_("\
+This is free software; see the source for copying conditions.  There is NO\n\
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
+"),
+        stream);
+}
+
+
+/*----------------------.
+| Process the options.  |
+`----------------------*/
+
+/* Shorts options.  */
+const char *short_options = "yvegdhr:ltknVo:b:p:S:T::";
+
+static struct option const long_options[] =
+{
+  /* Operation modes. */
+  { "help",          no_argument,              0,   'h' },
+  { "version",       no_argument,              0,   'V' },
+
+  /* Parser. */
+  { "name-prefix",   required_argument,          0,   'p' },
+  { "include",       required_argument,   0,   'I' },
+
+  /* Output. */
+  { "file-prefix", required_argument,  0,   'b' },
+  { "output",     required_argument,   0,   'o' },
+  { "output-file", required_argument,  0,   'o' },
+  { "graph",      optional_argument,   0,   'g' },
+  { "report",     required_argument,   0,   'r' },
+  { "verbose",    no_argument,         0,   'v' },
+
+  /* Hidden. */
+  { "trace",         optional_argument,   0,     'T' },
+
+  /* FIXME: semantic parsers will output an `include' of an
+     output file: be sure that the naem included is indeed the name of
+     the output file.  */ /* FIXME Should we activate this options ?
+     */
+  { "output",      required_argument,     0, 'o' },
+  { "file-prefix", required_argument,     0, 'b' },
+  { "name-prefix", required_argument,     0, 'p' },
+
+  /*
+   * Percent and command line declarations.
+   */
+
+  /* Output.  */
+  { "defines",     optional_argument,   0,   'd' },
+
+  /* Operation modes.  */
+  { "fixed-output-files", no_argument,  0,   'y' },
+  { "yacc",              no_argument,  0,   'y' },
+
+  /* Parser.  */
+  { "debug",         no_argument,               0,   't' },
+  { "locations",      no_argument, &locations_flag,     1 },
+  { "no-lines",       no_argument,               0,   'l' },
+  { "no-parser",      no_argument,               0,   'n' },
+  { "raw",            no_argument,               0,     0 },
+  { "skeleton",       required_argument,         0,   'S' },
+  { "token-table",    no_argument,               0,   'k' },
+
+  {0, 0, 0, 0}
+};
+
+/* Under DOS, there is no difference on the case.  This can be
+   troublesome when looking for `.tab' etc.  */
+#ifdef MSDOS
+# define AS_FILE_NAME(File) (strlwr (File), (File))
+#else
+# define AS_FILE_NAME(File) (File)
+#endif
+

 void
 getargs (int argc, char *argv[])
 {
 void
 getargs (int argc, char *argv[])
 {

-  register int c;
-
-  verboseflag = 0;
-  definesflag = 0;
-  debugflag = 0;
-  noparserflag = 0;
-  rawtoknumflag = 0;
-  toknumflag = 0;
-  fixed_outfiles = 0;
-
-  while ((c = getopt_long (argc, argv, "yvdhrltknVo:b:p:", longopts, (int *)0))
-        != EOF)
-    {
-      switch (c)
-       {
-       case 0:
-         /* Certain long options cause getopt_long to return 0.  */
-         break;
-
-       case 'y':
-         fixed_outfiles = 1;
-         break;
-         
-       case 'h':
-         usage (stdout);
-         exit (0);
-
-       case 'V':
-         printf ("%s", version_string);
-         exit (0);
-         
-       case 'v':
-         verboseflag = 1;
-         break;
-         
-       case 'd':
-         definesflag = 1;
-         break;
-         
-       case 'l':
-         nolinesflag = 1;
-         break;
-         
-       case 'k':
-         toknumflag = 1;
-         break;
-
-       case 'r':
-         rawtoknumflag = 1;
-         break;
-         
-       case 'n':
-         noparserflag = 1;
-         break;
-         
-       case 't':
-         debugflag = 1;
-         break;
-         
-       case 'o':
-         spec_outfile = optarg;
-         break;
-         
-       case 'b':
-         spec_file_prefix = optarg;
-         break;
-         
-       case 'p':
-         spec_name_prefix = optarg;
-         break;
-         
-       default:
-         usage (stderr);
-         exit (1);
-       }
-    }
+  int c;
+
+  while ((c = getopt_long (argc, argv, short_options, long_options, NULL)) != EOF)
+    switch (c)
+      {
+      case 0:
+       /* Certain long options cause getopt_long to return 0.  */
+       break;
+
+      case 'y':
+       yacc_flag = 1;
+       break;
+
+      case 'h':
+       usage (stdout);
+       exit (0);
+
+      case 'V':
+       version (stdout);
+       exit (0);
+
+      case 'g':
+       /* Here, the -g and --graph=FILE options are differentiated.  */
+       graph_flag = 1;
+       spec_graph_file = AS_FILE_NAME (optarg);
+       break;
+
+      case 'v':
+       report_flag |= report_states;
+       break;
+
+      case 'S':
+       skeleton = AS_FILE_NAME (optarg);
+       break;
+
+      case 'I':
+       include = AS_FILE_NAME (optarg);
+       break;
+
+      case 'd':
+       /* Here, the -d and --defines options are differentiated.  */
+       defines_flag = 1;
+       if (optarg)
+         spec_defines_file = AS_FILE_NAME (optarg);
+       break;
+
+      case 'l':
+       no_lines_flag = 1;
+       break;
+
+      case 'k':
+       token_table_flag = 1;
+       break;
+
+      case 'n':
+       no_parser_flag = 1;
+       break;
+
+      case 't':
+       debug_flag = 1;
+       break;
+
+      case 'o':
+       spec_outfile = AS_FILE_NAME (optarg);
+       break;
+
+      case 'b':
+       spec_file_prefix = AS_FILE_NAME (optarg);
+       break;
+
+      case 'p':
+       spec_name_prefix = optarg;
+       break;
+
+      case 'r':
+       report_argmatch (optarg);
+       break;
+
+      case 'T':
+       trace_argmatch (optarg);
+       break;
+
+      default:
+       fprintf (stderr, _("Try `%s --help' for more information.\n"),
+                program_name);
+       exit (1);
+      }

 
   if (optind == argc)
     {
 
   if (optind == argc)
     {

-      fprintf(stderr, _("%s: no grammar file given\n"), program_name);
-      exit(1);
+      fprintf (stderr, _("%s: no grammar file given\n"), program_name);
+      exit (1);

     }
   if (optind < argc - 1)
     }
   if (optind < argc - 1)

-    fprintf(stderr, _("%s: extra arguments ignored after '%s'\n"),
-               program_name, argv[optind]);
+    fprintf (stderr, _("%s: extra arguments ignored after `%s'\n"),
+            program_name, argv[optind]);

 
   infile = argv[optind];
 }
 
   infile = argv[optind];
 }