How to use

y

method

in

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

public void accessJavaScriptArrayWithTypedElementsFromJava() {
  Source src = Source.newBuilder("js", "" +
    "(function() {\n" +
    "  class Point {\n" +
    "     constructor(x, y) {\n" +
    "       this.x = x;\n" +
    "       this.y = y;\n" +
    "     }\n" +
    "  }\n" +
    "  return [ new Point(30, 15), new Point(5, 7) ];\n" +
    "})\n",
    "ArrayOfPoints.js").buildLiteral();
  // Evaluate the JavaScript function definition
  Value jsFunction = context.eval(src);
  // Create Java-typed access to the JavaScript function
  PointProvider pointProvider = jsFunction.as(PointProvider.class);
  // Invoke the JavaScript function to generate points
  List<Point> points = pointProvider.createPoints();
  assertEquals("Two points", 2, points.size());
  Point first = points.get(0);
  assertEquals(30, first.x());
  assertEquals(15, first.y());
  Point second = points.get(1);
  assertEquals(5, second.x());
  assertEquals(7, second.y());
}
// END: com.oracle.truffle.tck.impl.PolyglotEngineWithJavaScript#accessJavaScriptArrayWithTypedElementsFromJava

public void accessJavaScriptArrayWithTypedElementsFromJava() {
  Source src = Source.newBuilder("js", "" +
    "(function() {\n" +
    "  class Point {\n" +
    "     constructor(x, y) {\n" +
    "       this.x = x;\n" +
    "       this.y = y;\n" +
    "     }\n" +
    "  }\n" +
    "  return [ new Point(30, 15), new Point(5, 7) ];\n" +
    "})\n",
    "ArrayOfPoints.js").buildLiteral();
  // Evaluate the JavaScript function definition
  Value jsFunction = context.eval(src);
  // Create Java-typed access to the JavaScript function
  PointProvider pointProvider = jsFunction.as(PointProvider.class);
  // Invoke the JavaScript function to generate points
  List<Point> points = pointProvider.createPoints();
  assertEquals("Two points", 2, points.size());
  Point first = points.get(0);
  assertEquals(30, first.x());
  assertEquals(15, first.y());
  Point second = points.get(1);
  assertEquals(5, second.x());
  assertEquals(7, second.y());
}
// END: com.oracle.truffle.tck.impl.PolyglotEngineWithJavaScript#accessJavaScriptArrayWithTypedElementsFromJava