Method getBshIterator

src/bsh/CollectionManager.java:60–111

( Object obj )

	}

	public Iterator getBshIterator( Object obj ) 
		throws IllegalArgumentException
	{
		if(obj==null)
			throw new NullPointerException("Cannot iterate over null.");

		if (obj instanceof Enumeration) {
			final Enumeration enumeration = (Enumeration)obj;
			return new Iterator<Object>() {
				public boolean hasNext() {
					return enumeration.hasMoreElements();
				}
				public Object next() {
					return enumeration.nextElement();
				}
				public void remove() {
					throw new UnsupportedOperationException();
				}
			};
		}

		if (obj instanceof Iterator)
			return (Iterator)obj;

		if (obj instanceof Iterable)
			return ((Iterable)obj).iterator();

		if (obj.getClass().isArray()) {
			final Object array = obj;
			return new Iterator() {
				private int index = 0;
				private final int length = Array.getLength(array);

				public boolean hasNext() {
					return index < length;
				}
				public Object next() {
					return Array.get(array, index++);
				}
				public void remove() {
					throw new UnsupportedOperationException();
				}
			};
		} 
		
		if (obj instanceof CharSequence)
			return getBshIterator(
				obj.toString().toCharArray());

		throw new IllegalArgumentException(
			"Cannot iterate over object of type "+obj.getClass());
	}

	public boolean isMap( Object obj ) {
		return obj instanceof Map;