ruby.c: show help messages of --dump

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59973 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: sonots

ruby.c

@@ -240,13 +240,21 @@ usage(const char *name, int help)
 M("-h", "", "show this message, --help for more info"),
  };
  static const struct message help_msg[] = {
-M("--copyright", "", "print the copyright"),
-M("--enable=feature[,...]", ", --disable=feature[,...]",
- "enable or disable features"),
-M("--external-encoding=encoding", ", --internal-encoding=encoding",
+M("--copyright", "", "print the copyright"),
+M("--dump={insns|parsetree|...}[,...]", "",
+ "dump debug information. see below for available dump list"),
+M("--enable={gems|rubyopt|...}[,...]", ", --disable={gems|rubyopt|...}[,...]",
+ "enable or disable features. see below for available features"),
+M("--external-encoding=encoding", ", --internal-encoding=encoding",
  "specify the default external or internal character encoding"),
-M("--version", "", "print the version"),
-M("--help", "", "show this message, -h for short message"),
+M("--version", "", "print the version"),
+M("--help", "", "show this message, -h for short message"),
+ };
+ static const struct message dumps[] = {
+M("insns", "", "instruction sequences"),
+M("yydebug", "", "yydebug of yacc parser generator"),
+M("parsetree", "", "AST"),
+M("parsetree_with_comment", "", "AST with comments"),
  };
  static const struct message features[] = {
 M("gems", "", "rubygems (default: "DEFAULT_RUBYGEMS_ENABLED")"),
@@ -266,6 +274,9 @@ usage(const char *name, int help)
 
  for (i = 0; i < numberof(help_msg); ++i)
 SHOW(help_msg[i]);
+ puts("Dump List:");
+ for (i = 0; i < numberof(dumps); ++i)
+SHOW(dumps[i]);
  puts("Features:");
  for (i = 0; i < numberof(features); ++i)
 SHOW(features[i]);