150 lines
5.4 KiB
Java
150 lines
5.4 KiB
Java
package io.gitlab.jfronny.commons.throwable;
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import org.jetbrains.annotations.*;
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import java.util.Objects;
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import java.util.function.Function;
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import java.util.function.Predicate;
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@FunctionalInterface
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public interface ThrowingPredicate<T, TEx extends Throwable> {
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static <T> @NotNull ThrowingPredicate<T, RuntimeException> of(@NotNull Predicate<T> predicate) {
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return Objects.requireNonNull(predicate)::test;
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}
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boolean test(T var1) throws TEx;
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default <V> @NotNull ThrowingPredicate<V, TEx> compose(@NotNull ThrowingFunction<? super V, ? extends T, ? extends TEx> before) {
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Objects.requireNonNull(before);
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return (t) -> this.test(before.apply(t));
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingBooleanSupplier<TEx> compose(@NotNull ThrowingSupplier<? extends T, ? extends TEx> before) {
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Objects.requireNonNull(before);
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return () -> this.test(before.get());
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingPredicate<T, TEx> and(@NotNull ThrowingPredicate<? super T, ? extends TEx> other) {
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Objects.requireNonNull(other);
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return (t) -> this.test(t) && other.test(t);
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingPredicate<T, TEx> and(@NotNull ThrowingBooleanSupplier<? extends TEx> other) {
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Objects.requireNonNull(other);
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return (t) -> this.test(t) && other.get();
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingPredicate<T, TEx> or(@NotNull ThrowingPredicate<? super T, ? extends TEx> other) {
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Objects.requireNonNull(other);
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return (t) -> this.test(t) || other.test(t);
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingPredicate<T, TEx> or(@NotNull ThrowingBooleanSupplier<? extends TEx> other) {
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Objects.requireNonNull(other);
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return (t) -> this.test(t) || other.get();
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingPredicate<T, TEx> xor(@NotNull ThrowingPredicate<? super T, ? extends TEx> other) {
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Objects.requireNonNull(other);
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return (t) -> this.test(t) ^ other.test(t);
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingPredicate<T, TEx> xor(@NotNull ThrowingBooleanSupplier<? extends TEx> other) {
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Objects.requireNonNull(other);
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return (t) -> this.test(t) ^ other.get();
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}
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@Contract(value = "-> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull ThrowingPredicate<T, TEx> negate() {
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return (t) -> !this.test(t);
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}
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@Contract(value = "_ -> new", pure = true)
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static <T> @NotNull ThrowingPredicate<T, Throwable> isEqual(@Nullable Object targetRef) {
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return null == targetRef ? Objects::isNull : targetRef::equals;
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}
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@Contract(value = "_ -> new", pure = true)
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static <T, TEx extends Throwable> @NotNull ThrowingPredicate<T, TEx> not(@NotNull ThrowingPredicate<T, TEx> target) {
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return Objects.requireNonNull(target).negate();
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull Predicate<T> addHandler(@NotNull Predicate<Throwable> handler) {
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Objects.requireNonNull(handler);
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return (r) -> {
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try {
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return this.test(r);
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} catch (Throwable e) {
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return handler.test(e);
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}
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};
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}
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@Contract(value = "_, _ -> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull Predicate<T> addHandler(@NotNull Class<TEx> exception, @NotNull Predicate<TEx> handler) {
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Objects.requireNonNull(exception);
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Objects.requireNonNull(handler);
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return (r) -> {
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try {
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return this.test(r);
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} catch (Throwable e) {
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if (exception.isAssignableFrom(e.getClass()))
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return handler.test((TEx) e);
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else throw ExceptionWrapper.wrap(e);
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}
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};
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}
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@Contract(value = "-> new", pure = true)
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@ApiStatus.NonExtendable
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default @NotNull Predicate<T> orThrow() {
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return orThrow(ExceptionWrapper::wrap)::test;
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}
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@Contract(value = "_ -> new", pure = true)
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@ApiStatus.NonExtendable
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default <TEx1 extends Throwable> @NotNull ThrowingPredicate<T, TEx1> orThrow(@NotNull Function<Throwable, TEx1> generator) {
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Objects.requireNonNull(generator);
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return (r) -> {
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try {
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return this.test(r);
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} catch (Throwable e) {
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throw generator.apply(e);
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}
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};
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}
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/**
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* Hides the exception this could throw from the java compiler, effectively making it unchecked.
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* Wraps the predicate in a predicate not marked to throw the checked exception.
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*
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* @return a predicate that does not throw checked exceptions
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*/
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@Contract(value = "-> new", pure = true)
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@ApiStatus.NonExtendable
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default Predicate<T> assumeSafe() {
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ThrowingPredicate<T, RuntimeException> predicate = (ThrowingPredicate<T, RuntimeException>) (ThrowingPredicate) this;
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return predicate::test;
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}
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}
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