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package Torello.Java.Function;

/**
 * Function-Pointer
 * <SPAN CLASS=TJF>Input:</SPAN> {@code int, boolean}
 * <SPAN CLASS=TJF>Output:</SPAN> {@code boolean}.
 * 
 * <BR /><BR />
 * <EMBED CLASS="external-html" DATA-FILE-ID=TWOPRIMPRED>
 * <EMBED CLASS="globalDefs" DATA-Type1=int DATA-Type2=boolean>
 */
@FunctionalInterface
public interface IntBoolPredicate
{
    /**
     * Evaluates this predicate on the given arguments.
     * @param i The integer (first) argument to the predicate.
     * @param b The boolean (second) argument to the predicate.
     * @return <B>TRUE</B> if the input arguments match this predicate, and <B>FALSE</B> otherwise.
     */
    public boolean test(int i, boolean b);

    /**
     * <EMBED CLASS="external-html" DATA-FILE-ID="PREDANDMETH">
     * @param other A predicate that will be logically-AND'ed with this predicate
     * @return <EMBED CLASS="external-html" DATA-FILE-ID="PREDANDRET">
     * @throws NullPointerException if parameter {@code 'other'} is null.
     */
    default IntBoolPredicate and(IntBoolPredicate other)
    {
        if (other == null)
            throw new NullPointerException("null has been passed to parameter 'other");

        return (int i, boolean b) -> this.test(i, b) && other.test(i, b);
    }

    /**
     * <EMBED CLASS="external-html" DATA-FILE-ID="PREDNEGMETH">
     * @return <EMBED CLASS="external-html" DATA-FILE-ID="PREDNEGRET">
     */
    default IntBoolPredicate negate()
    { return (int i, boolean b) -> ! this.test(i, b); }

    /**
     * <EMBED CLASS="external-html" DATA-FILE-ID="PREDORMETH">
     * @param other a predicate that will be logically-ORed with this predicate
     * @return <EMBED CLASS="external-html" DATA-FILE-ID="PREDORRET">
     * @throws NullPointerException if parameter {@code 'other'} is null.
     */
    default IntBoolPredicate or(IntBoolPredicate other)
    {
        if (other == null)
            throw new NullPointerException("null has been passed to parameter 'other");

        return (int i, boolean b) -> this.test(i, b) || other.test(i, b);
    }
}