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SciJava Common is a shared library for SciJava software. It provides a plugin framework, with an extensible mechanism for service discovery, backed by its own annotation processor, so that plugins can be loaded dynamically. It is used by downstream projects in the SciJava ecosystem, such as ImageJ and SCIFIO.

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/*
 * #%L
 * SciJava Common shared library for SciJava software.
 * %%
 * Copyright (C) 2009 - 2014 Board of Regents of the University of
 * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
 * Institute of Molecular Cell Biology and Genetics.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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package org.scijava.util;

import java.util.Collection;
import java.util.List;

/**
 * Utility class for creating and manipulating {@link PrimitiveArray} instances.
 * 
 * @author Mark Hiner
 */
public final class ArrayUtils {

	private ArrayUtils() {
		// prevent instantiation of utility class
	}

	// -- ArrayUtils methods --

	/**
	 * Converts the provided Object to a {@link Collection} implementation. If the
	 * object is an array type, a {@link PrimitiveArray} wrapper will be created.
	 */
	public static Collection toCollection(final Object value) {
		// If the value is null or we we have a collection, just return it
		if (value == null || Collection.class.isAssignableFrom(value.getClass())) {
			return (Collection) value;
		}
		// Check for primitive array types
		if (value instanceof char[]) {
			return new CharArray((char[]) value);
		}
		if (value instanceof byte[]) {
			return new ByteArray((byte[]) value);
		}
		if (value instanceof boolean[]) {
			return new BoolArray((boolean[]) value);
		}
		if (value instanceof short[]) {
			return new ShortArray((short[]) value);
		}
		if (value instanceof int[]) {
			return new IntArray((int[]) value);
		}
		if (value instanceof long[]) {
			return new LongArray((long[]) value);
		}
		if (value instanceof float[]) {
			return new FloatArray((float[]) value);
		}
		if (value instanceof double[]) {
			return new DoubleArray((double[]) value);
		}
		if (value instanceof Object[]) {
			return new ObjectArray