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package dido.operators;

/**
 * Copied from Google... as only Json pulls in the dependency.
 */
public class Primitives {

    /**
     * Returns the corresponding wrapper type of {@code type} if it is a primitive
     * type; otherwise returns {@code type} itself. Idempotent.
     *      *     wrap(int.class) == Integer.class
     *     wrap(Integer.class) == Integer.class
     *     wrap(String.class) == String.class
     * 
     */
    @SuppressWarnings("unchecked")
    public static  Class wrap(Class type) {
        if (type == int.class) return (Class) Integer.class;
        if (type == float.class) return (Class) Float.class;
        if (type == byte.class) return (Class) Byte.class;
        if (type == double.class) return (Class) Double.class;
        if (type == long.class) return (Class) Long.class;
        if (type == char.class) return (Class) Character.class;
        if (type == boolean.class) return (Class) Boolean.class;
        if (type == short.class) return (Class) Short.class;
        if (type == void.class) return (Class) Void.class;
        return type;
    }

    /**
     * Returns the corresponding primitive type of {@code type} if it is a
     * wrapper type; otherwise returns {@code type} itself. Idempotent.
     *      *     unwrap(Integer.class) == int.class
     *     unwrap(int.class) == int.class
     *     unwrap(String.class) == String.class
     * 
     */
    @SuppressWarnings("unchecked")
    public static  Class unwrap(Class type) {
        if (type == Integer.class) return (Class) int.class;
        if (type == Float.class) return (Class) float.class;
        if (type == Byte.class) return (Class) byte.class;
        if (type == Double.class) return (Class) double.class;
        if (type == Long.class) return (Class) long.class;
        if (type == Character.class) return (Class) char.class;
        if (type == Boolean.class) return (Class) boolean.class;
        if (type == Short.class) return (Class) short.class;
        if (type == Void.class) return (Class) void.class;
        return type;
    }

}