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package net.mostlyoriginal.api.utils;

/**
 * @author Daan van Yperen
 */
public final class Preconditions {
	private Preconditions() {}

	public static void checkArgument(boolean expression) {
		if ( !expression ) {
			throw new IllegalArgumentException();
		}
	}

	public static void checkArgument(boolean expression, String message) {
		if ( !expression ) {
			throw new IllegalArgumentException(message);
		}
	}

	public static  T checkNotNull(T reference) {
		if ( reference == null ) {
			throw new NullPointerException();
		}
		return reference;
	}

	public static  T checkNotNull(T reference, String message) {
		if ( reference == null ) {
			throw new NullPointerException(message);
		}
		return reference;
	}
}