/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

// Flexible script object using AbstractJSObject subclass

var AbstractJSObject = Java.type("jdk.nashorn.api.scripting.AbstractJSObject");

// JSObject example that uses a map for properties and 
// falls back to with methods on a java object (for missing
// properties

function makeJSObj(map, fallback) {
    return new AbstractJSObject() {
        getMember: function(name) {
            if (map.containsKey(name)) {
                return map.get(name);
            }

            var val = fallback[name];
            if (typeof val == 'function') {
                return function() {
                   var a = arguments;
                   switch (a.length) {
                       case 0: return fallback[name](); 
                       case 1: return fallback[name](a[0]);
                       case 2: return fallback[name](a[0], a[1]);
                       case 3: return fallback[name](a[0], a[1], a[2]);
                       case 4: return fallback[name](a[0], a[1], a[2], a[3]);
                   }
                }
            }
        }
    }
}

var m = new java.util.HashMap();
m.put("foo", 42);
m.put("bar", 'hello');

var obj = makeJSObj(m, new java.io.File("."));

print(obj.foo);
print(obj.bar);
print(obj.getAbsolutePath());
print(obj.isDirectory());