* src/nullable.c (set_nullable): Useless rules must be skipped,

[bison.git] / src / getargs.c

diff --git a/src/getargs.c b/src/getargs.c
index 6c74d264b63bc3a17fc6fa56659a134c189a72b1..dd5de7fd8e606ff0b4947b9ddb7ec14b62d86ed0 100644 (file)
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -22,6 +22,7 @@
 #include "getopt.h"
 #include "system.h"
 #include "files.h"
+#include "complain.h"
 #include "getargs.h"
 
 int debug_flag = 0;
@@ -29,14 +30,16 @@ int defines_flag = 0;
 int locations_flag = 0;
 int no_lines_flag = 0;
 int no_parser_flag = 0;
-char *skeleton = 0;
 int token_table_flag = 0;
 int verbose_flag = 0;
-int statistics_flag = 0;
 int yacc_flag = 0;     /* for -y */
+int graph_flag = 0;
+int trace_flag = 0;
+
+const char *skeleton = NULL;
 
 extern char *program_name;
-const char *shortopts = "yvdhrltknVo:b:p:S:";
+const char *shortopts = "yvgdhrltknVo:b:p:S:";
 static struct option longopts[] =
 {
   /* Operation modes. */
@@ -47,7 +50,7 @@ static struct option longopts[] =
 
   /* Parser. */
   {"skeleton",         required_argument,      0, 'S'},
-  {"debug",            no_argument,            0, 'd'},
+  {"debug",            no_argument,            0, 't'},
   {"locations",                no_argument,    &locations_flag, 1},
   /* was 'a';  apparently unused -wjh */
   {"name-prefix",      required_argument,      0, 'p'},
@@ -57,13 +60,15 @@ static struct option longopts[] =
   {"token-table",      no_argument,            0, 'k'},
 
   /* Output. */
-  {"defines",          no_argument,            0, 'd'},
+  {"defines",          optional_argument,      0, 'd'},
   {"verbose",          no_argument,            0, 'v'},
   {"file-prefix",      required_argument,      0, 'b'},
+  {"output",           required_argument,      0, 'o'},
   {"output-file",      required_argument,      0, 'o'},
+  {"graph",            optional_argument,      0, 'g'},
 
   /* Hidden. */
-  {"statistics",       no_argument,    &statistics_flag, 1},
+  {"trace",            no_argument,    &trace_flag, 1},
   {0, 0, 0, 0}
 };
 
@@ -114,7 +119,9 @@ Output:\n\
   -d, --defines              also produce a header file\n\
   -v, --verbose              also produce an explanation of the automaton\n\
   -b, --file-prefix=PREFIX   specify a PREFIX for output files\n\
-  -o, --output-file=FILE     leave output to FILE\n"), stream);
+  -o, --output=FILE          leave output to FILE\n\
+  -g, --graph                also produce a VCG description of the automaton\n\
+"), stream);
   putc ('\n', stream);
 
   fputs (_("\
@@ -176,6 +183,12 @@ getargs (int argc, char *argv[])
        version (stdout);
        exit (0);
 
+      case 'g':
+       /* Here, the -g and --graph=FILE options are differentiated.  */
+       graph_flag = 1;
+       spec_graph_file = optarg;
+       break;
+
       case 'v':
        verbose_flag = 1;
        break;
@@ -185,7 +198,9 @@ getargs (int argc, char *argv[])
        break;
 
       case 'd':
+       /* Here, the -d and --defines options are differentiated.  */
        defines_flag = 1;
+       spec_defines_file = optarg;
        break;
 
       case 'l':