How to use

com.oracle.truffle.tck.impl.PolyglotEngineWithJavaScript$Moment

constructor

public void accessFieldsOfJavaObject() {
  Source src = Source.newBuilder("js", "" +
    "(function(t) {\n" +
    "  return 3600 * t.hours + 60 * t.minutes + t.seconds;\n" +
    "})\n",
    "MomentToSeconds.js").buildLiteral();
  final Moment javaMoment = new Moment(6, 30, 10);
  // Evaluate the JavaScript function definition
  Value jsFunction = context.eval(src);
  // Execute the JavaScript function, passing a Java object argument
  Value jsSeconds = jsFunction.execute(javaMoment);
  // Convert foreign object result to desired Java type
  int seconds = jsSeconds.as(Number.class).intValue();
  assertEquals(3600 * 6 + 30 * 60 + 10, seconds);
}
// END: com.oracle.truffle.tck.impl.PolyglotEngineWithJavaScript#accessFieldsOfJavaObject

public void accessFieldsOfJavaObject() {
  Source src = Source.newBuilder("js", "" +
    "(function(t) {\n" +
    "  return 3600 * t.hours + 60 * t.minutes + t.seconds;\n" +
    "})\n",
    "MomentToSeconds.js").buildLiteral();
  final Moment javaMoment = new Moment(6, 30, 10);
  // Evaluate the JavaScript function definition
  Value jsFunction = context.eval(src);
  // Execute the JavaScript function, passing a Java object argument
  Value jsSeconds = jsFunction.execute(javaMoment);
  // Convert foreign object result to desired Java type
  int seconds = jsSeconds.as(Number.class).intValue();
  assertEquals(3600 * 6 + 30 * 60 + 10, seconds);
}
// END: com.oracle.truffle.tck.impl.PolyglotEngineWithJavaScript#accessFieldsOfJavaObject

public void accessFieldsOfJavaObjectWithConverter() {
  Source src = Source.newBuilder("js", "" +
    "(function(t) {\n" +
    "  return 3600 * t.hours + 60 * t.minutes + t.seconds;\n" +
    "})\n",
    "MomentToSeconds.js").buildLiteral();
  final Moment javaMoment = new Moment(6, 30, 10);
  // Evaluate the JavaScript function definition
  final Value jsFunction = context.eval(src);
  // Convert the function to desired Java type
  MomentConverter converter = jsFunction.as(MomentConverter.class);
  // Execute the JavaScript function as a Java foreign function
  int seconds = converter.toSeconds(javaMoment);
  assertEquals(3600 * 6 + 30 * 60 + 10, seconds);
}
// END: com.oracle.truffle.tck.impl.PolyglotEngineWithJavaScript#accessFieldsOfJavaObjectWithConverter

public void accessFieldsOfJavaObjectWithConverter() {
  Source src = Source.newBuilder("js", "" +
    "(function(t) {\n" +
    "  return 3600 * t.hours + 60 * t.minutes + t.seconds;\n" +
    "})\n",
    "MomentToSeconds.js").buildLiteral();
  final Moment javaMoment = new Moment(6, 30, 10);
  // Evaluate the JavaScript function definition
  final Value jsFunction = context.eval(src);
  // Convert the function to desired Java type
  MomentConverter converter = jsFunction.as(MomentConverter.class);
  // Execute the JavaScript function as a Java foreign function
  int seconds = converter.toSeconds(javaMoment);
  assertEquals(3600 * 6 + 30 * 60 + 10, seconds);
}
// END: com.oracle.truffle.tck.impl.PolyglotEngineWithJavaScript#accessFieldsOfJavaObjectWithConverter