package org.litesoft.core.typeutils;

import org.litesoft.core.util.*;

public class Integers
{
    public static final int[] EMPTY_ARRAY_PRIMITIVES = new int[0];
    public static final Integer[] EMPTY_ARRAY = new Integer[0];

    public static int assertPositive( String pWhat, int pInt )
    {
        if ( 0 < pInt )
        {
            return pInt;
        }
        throw new IllegalArgumentException( pWhat + " expected to be positive, but was: " + pInt );
    }

    public static int assertNonNegative( String pWhat, int pInt )
    {
        if ( 0 <= pInt )
        {
            return pInt;
        }
        throw new IllegalArgumentException( pWhat + " expected to be non-negative, but was: " + pInt );
    }

    public static void assertNotEqual( String pObjectName, int pNotExpected, int pActual )
            throws IllegalArgumentException
    {
        if ( pNotExpected == pActual )
        {
            throw new IllegalArgumentException( pObjectName + ": '" + pNotExpected + "' Not allowed" );
        }
    }

    public static void assertEqual( String pObjectName, int pExpected, int pActual )
            throws IllegalArgumentException
    {
        if ( pExpected != pActual )
        {
            throw new IllegalArgumentException( pObjectName + ": Expected '" + pExpected + "', but was '" + pActual + "'" );
        }
    }
}