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package com.thebuzzmedia.exiftool.commons.exceptions;

/**
 * Static Exceptions Utilities.
 */
public final class Exceptions {

	private Exceptions() {
	}

	/**
	 * Coerce an unchecked Throwable to a RuntimeException:
	 *
	 * 
	 *   If the Throwable is an Error, throw it.
	 *   If it is a {@link RuntimeException} return it.
	 *   Otherwise, throw {@link IllegalStateException}.
	 * 
	 *
	 * @param t Original throwable.
	 * @return Wrapped exception.
	 */
	public static RuntimeException launderThrowable(Throwable t) {
		if (t instanceof RuntimeException) {
			return (RuntimeException) t;
		}
		else if (t instanceof Error) {
			throw (Error) t;
		}
		else {
			throw new IllegalStateException("Not unchecked", t);
		}
	}
}