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//This file is part of the Java™ Pretty Printer Library (JPPlib)
//Copyright (c) 2009, Martin Giese
//All rights reserved.
//
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package de.uka.ilkd.pp;

/** A utility class to box all elements of an array. 
 * Java's autoboxing applies only to primitive types, not
 * to arrays of primitive values.  The methods in this class
 * can be used to box each element of an array of primitive
 * values, e.g. int[], so as to obtain an array of references,
 * e.g. Integer[].  The boxPrimArray methods
 * may be used to box arrays of known primitive element type.
 * {@link #boxArray(Object)} will box the elements of an
 * arbitrary array, passed in as an Object, 
 * using reflection to find out the element type.
 * 
 * @author Martin Giese
 *
 */
class BoxArrays {
	public static Boolean[] boxPrimArray(boolean[] a) {
		Boolean[] result = new Boolean[a.length];
		for(int i=0;iInteger[] from
	 * an int[] and similarly for all other
	 * primitive types.  Arrays of non-primitive types are
	 * returned unchanged.  Any other objects lead to an
	 * AssertionError
	 * 
	 * @param o an object of any array type
	 * @return the boxed array
	 * @throws java.lang.AssertionError if o is not an array
	 */
	public static Object[] boxArray(Object o) {
		assert o.getClass().isArray();
		Class comp = o.getClass().getComponentType();
		if (comp == Boolean.TYPE) {
			return boxPrimArray((boolean[])o);
		} else if (comp == Character.TYPE) {
			return boxPrimArray((char[])o);
		} else if (comp == Byte.TYPE) {
			return boxPrimArray((byte[])o);
		} else if (comp == Short.TYPE) {
			return boxPrimArray((short[])o);
		} else if (comp == Integer.TYPE) {
			return boxPrimArray((int[])o);
		} else if (comp == Long.TYPE) {
			return boxPrimArray((long[])o);
		} else if (comp == Float.TYPE) {
			return boxPrimArray((float[])o);
		} else if (comp == Double.TYPE) {
			return boxPrimArray((double[])o);
		} else {
			return (Object[])o;
		}
    }
}