GraalPolyglot.java

import java.io.File;
import java.io.IOException;
import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Source;
import org.graalvm.polyglot.Value;

public class GraalPolyglot {
    public static void main(String[] args) throws IOException {
        Source source = Source.newBuilder("ruby", new File(args[0])).build();

        try (Context context = Context.newBuilder().allowAllAccess(true).build()) {
            context.eval(source);
        }
    }
}

Run.sh

$ java GraalPolyglot test.rb
1
Exception in thread "main" org.graalvm.polyglot.PolyglotException: org.truffleruby.language.control.RaiseException: <no message> (EngineException)
Translated to internal error (RuntimeError)
        at com.oracle.truffle.api.TruffleStackTrace.materializeHostException(TruffleStackTrace.java:103)
        at com.oracle.truffle.api.TruffleStackTrace.materializeHostFrames(TruffleStackTrace.java:162)
        at com.oracle.truffle.api.LanguageAccessor$LanguageImpl.materializeHostFrames(LanguageAccessor.java:119)
        at com.oracle.truffle.polyglot.PolyglotExceptionImpl.<init>(PolyglotExceptionImpl.java:175)
        at com.oracle.truffle.polyglot.PolyglotExceptionImpl.<init>(PolyglotExceptionImpl.java:98)
        at com.oracle.truffle.polyglot.PolyglotImpl.wrapGuestException(PolyglotImpl.java:366)
        at com.oracle.truffle.polyglot.PolyglotContextImpl.eval(PolyglotContextImpl.java:817)
        at org.graalvm.polyglot.Context.eval(Context.java:344)
        at GraalPolyglot.main(GraalPolyglot.java:12)
        at <ruby> <top (required)>(Unknown)
        at <ruby> parsing-request(Unknown)
Original Internal Error:
org.truffleruby.language.control.RaiseException: <no message> (EngineException)
Translated to internal error (RuntimeError)
Caused by: Attached Guest Language Frames (2)

$ java -version
openjdk version "1.8.0_232"
OpenJDK Runtime Environment (build 1.8.0_232-20191009173705.graal.jdk8u-src-tar-gz-b07)
OpenJDK 64-Bit GraalVM CE 19.2.1 (build 25.232-b07-jvmci-19.2-b03, mixed mode)

test.rb

Java.import 'org.graalvm.polyglot.Context'

context = Context.newBuilder().allowAllAccess(true).build
begin
  #v = 'Ruby String'
  #context.getBindings("js").putMember("v", v.to_java)
  #js = <<~JS
  #print('v=' + v)
  #JS
  #context.eval("js", js)
  context.eval("js", 'print(1)')
ensure
  context.close
end