/**
* Returns a composed {@link TriDoubleConsumer} that first applies the {@code before} functions to
* its input, and then applies this consumer to the result. If evaluation of either operation
* throws an exception, it is relayed to the caller of the composed operation. This method is just
* convenience, to provide the ability to execute an operation which accepts {@code double} input,
* before this primitive consumer is executed.
*
* @param before1 The first function to apply before this consumer is applied
* @param before2 The second function to apply before this consumer is applied
* @param before3 The third function to apply before this consumer is applied
* @return A composed {@code TriDoubleConsumer} that first applies the {@code before} functions to
* its input, and then applies this consumer to the result.
* @throws NullPointerException If given argument is {@code null}
* @implSpec The input argument of this method is a able to handle primitive values. In this case
* this is {@code double}.
*/
@Nonnull
default TriDoubleConsumer composeFromDouble(
@Nonnull final DoubleFunction<? extends T> before1,
@Nonnull final DoubleToIntFunction before2,
@Nonnull final DoubleToIntFunction before3) {
Objects.requireNonNull(before1);
Objects.requireNonNull(before2);
Objects.requireNonNull(before3);
return (value1, value2, value3) ->
accept(before1.apply(value1), before2.applyAsInt(value2), before3.applyAsInt(value3));
}
private <E extends RuntimeException> void assertDoubleToIntFunction(
DoubleToIntFunction test, Class<E> type) {
assertNotNull(test);
try {
test.applyAsInt(0.0);
fail();
} catch (RuntimeException e) {
assertException(type, e, "0.0");
}
try {
DoubleStream.of(1.0, 2.0, 3.0).mapToInt(test);
} catch (RuntimeException e) {
assertException(type, e, "1.0");
}
}