#// Usage: jjs -scripting foreignobject.js

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 *     from this software without specific prior written permission.
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// cross nashorn engine scripting
// access script objects from other engines in natural syntax

var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
// create manager
var manager = new ScriptEngineManager();
// create engine
var engine = manager.getEngineByName("js");

// eval code!
engine.eval(<<CODE
    var obj = {
        foo: 42,
        func: function() {
            print("func: " + this.foo);
        }
    };
CODE);

// Nashorn engine returns script objects as instance of
// the class jdk.nashorn.api.scripting.ScriptObjectMirror
// But nashorn's dynalink linker can treat these objects
// specially to support natural script syntax to access..
// In Java code, you need to use ScriptObjectMirror's
// methods though. Once again, script world is simpler :-)

var foreignObj = engine.get("obj");
// access properties, functions of it
// with natural syntax
print(foreignObj.foo);
foreignObj.func();
print(typeof foreignObj.func);

// access engine's global
var foreignGlobal = engine.eval("this");
// create objects in engine's world from here!
print(new foreignGlobal.Object());
print(new foreignGlobal.Date());