JSObject.java

package com.drawbridge.jsengine.jsobjects;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;

/**
 * JavaScript objects have properties. A property can be a JSType (i.e. a function as well as a literal). 
 * @author Alistair Stead
 *
 */
public class JSObject implements JSType
{
	protected HashMap<String, JSType> properties = new HashMap<String, JSType>();
	
	public JSObject(){
		//Add prototype here
		//TODO prototype should be a new property of each object
		
		addProperty("hasOwnProperty", new JSNativeFunction(this, "hasOwnProperty", new Class<?>[] {JSObject.class, JSString.class}));
		addProperty("prototype", new JSNativeFunction(this, "prototype", null));
		addProperty("constructor", new JSObject(false));
	}
	
	public JSObject(boolean constructor){
		if(constructor)
		{
			addProperty("hasOwnProperty", new JSNativeFunction(this, "hasOwnProperty", new Class<?>[] {JSObject.class, JSString.class}));
			addProperty("prototype", new JSNativeFunction(this, "prototype", null));
			addProperty("constructor", new JSObject(false));
		}
		else{
			addProperty("hasOwnProperty", new JSNativeFunction(this, "hasOwnProperty", new Class<?>[] {JSObject.class, JSString.class}));
			addProperty("prototype", new JSNativeFunction(this, "prototype", null));
		}
	
	}
	
	public JSType getProperty(String name){
		return properties.get(name);
	}
	
	public void addProperty(String name, JSType value){
		properties.put(name, value);
	}

	
	@Override
	public String toString(){
		String result = "";
		Set<String> keys = properties.keySet();
		Iterator<String> it = keys.iterator();
		while(it.hasNext()){
			String name = it.next();
			Object obj = properties.get(name);
			result += " {" + name + ":" + obj.toString() + "}";
		}
		
		return result;
	}
	
	@Override
	public boolean equals(Object object){
		if(object instanceof JSObject){
			JSObject dbObject = (JSObject) object;
			if(dbObject.properties.size() == properties.size()){
				Set<String> keys = properties.keySet();
				Iterator<String> it = keys.iterator();
				while(it.hasNext()){
					String name = it.next();
					Object obj = properties.get(name);
					if(dbObject.properties.get(name).equals(obj)){
						
					}
					else{
						return false;
					}
				}
			}
			else{
				return false;
			}
		}
		else{
			return false;
		}
		return true;
	}
	

}