56 lines
1.1 KiB
Java
56 lines
1.1 KiB
Java
package it.cavallium.data.generator;
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import java.util.Objects;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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public interface TypedNullable<T> extends NativeNullable<T> {
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@NotNull
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default T get() throws NullPointerException {
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var value = getNullable();
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if (value == null) {
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throw new NullPointerException();
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} else {
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return value;
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}
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}
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@Override
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default @Nullable T getNullable(@Nullable T defaultValue) {
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var value = getNullable();
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return value == null ? defaultValue : value;
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}
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@Override
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default @NotNull T orElse(@NotNull T defaultValue) {
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var value = getNullable();
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if (value == null) {
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Objects.requireNonNull(defaultValue, "default value must not be null");
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return defaultValue;
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} else {
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return value;
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}
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}
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@Override
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default @NotNull NativeNullable<? extends T> or(@NotNull NativeNullable<? extends T> fallback) {
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var value = getNullable();
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if (value == null) {
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return fallback;
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} else {
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return this;
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}
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}
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@Override
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default boolean isPresent() {
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return getNullable() != null;
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}
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@Override
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default boolean isEmpty() {
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return getNullable() == null;
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}
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}
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