Use Enum#toString() in Truffle::Boot.get_option

Author: eregon

spec/truffle/options/parsing_spec.rb

@@ -22,9 +22,9 @@
     end
 
     it "enum values" do
-      ruby_exe("p Truffle::Boot.get_option('verbose')").should_not == ":NIL\n"
-      ruby_exe("p Truffle::Boot.get_option('verbose')", options: "--verbose=NIL").should == ":NIL\n"
-      ruby_exe("p Truffle::Boot.get_option('verbose')", options: "--verbose").should == ":TRUE\n"
+      ruby_exe("p Truffle::Boot.get_option('verbose')").should_not == ":nil\n"
+      ruby_exe("p Truffle::Boot.get_option('verbose')", options: "--verbose=nil").should == ":nil\n" # TODO
+      ruby_exe("p Truffle::Boot.get_option('verbose')", options: "--verbose").should == ":true\n"
     end
 
     it "strings" do
@@ -49,7 +49,7 @@
     end
 
     it "enum values" do
-      ruby_exe("14", options: "--verbose=foo", args: "2>&1", exit_status: 1).should.include?("Invalid argument --verbose=foo specified. No enum constant org.truffleruby.shared.options.Verbosity.FOO")
+      ruby_exe("14", options: "--verbose=foo", args: "2>&1", exit_status: 1).should.include?("ERROR: Invalid argument --verbose=foo specified. Invalid option value 'foo'. Valid options values are: 'nil', 'false', 'true'")
     end
   end
 end

src/main/java/org/truffleruby/language/TruffleBootNodes.java

@@ -343,7 +343,7 @@ protected Object getOption(Object optionName,
             if (value instanceof Boolean || value instanceof Integer) {
                 return value;
             } else if (value instanceof Enum) {
-                return getSymbol(((Enum<?>) value).name());
+                return getSymbol(value.toString());
             } else if (value instanceof String) {
                 return makeStringNode.executeMake(value, Encodings.UTF_8, CodeRange.CR_UNKNOWN);
             } else if (value instanceof String[]) {

src/main/ruby/truffleruby/core/truffle/kernel_operations.rb

@@ -134,11 +134,11 @@ def $LOAD_PATH.resolve_feature_path(file_name)
     Truffle::Boot.redo do
       $DEBUG = Truffle::Boot.get_option_or_default('debug', false)
       $VERBOSE = case Truffle::Boot.get_option_or_default('verbose', false)
-                 when :TRUE
+                 when :true
                    true
-                 when :FALSE
+                 when :false
                    false
-                 when :NIL
+                 when :nil
                    nil
                  end
     end

src/main/ruby/truffleruby/core/truffle/regexp_operations.rb

@@ -175,7 +175,7 @@ def self.match_stats(joni_matches:)
     def self.print_stats
       output_format = Truffle::Boot.get_option('regexp-instrumentation-output-format')
 
-      if output_format == :TEXT
+      if output_format == :text
         puts '--------------------'
         puts 'Regular expression statistics'
         puts '--------------------'
@@ -204,7 +204,7 @@ def self.print_stats
 
           puts '--------------------'
         end
-      elsif output_format == :JSON
+      elsif output_format == :json
         ret = {}
 
         if Truffle::Boot.get_option('regexp-instrument-creation')