107 lines
2.3 KiB
Java
107 lines
2.3 KiB
Java
package net.minecraft.server.level;
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import java.util.function.Consumer;
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import java.util.function.Function;
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import java.util.function.Supplier;
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import org.jetbrains.annotations.Nullable;
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public interface ChunkResult<T> {
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static <T> ChunkResult<T> of(T value) {
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return new ChunkResult.Success<>(value);
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}
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static <T> ChunkResult<T> error(String error) {
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return error((Supplier<String>)(() -> error));
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}
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static <T> ChunkResult<T> error(Supplier<String> errorSupplier) {
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return new ChunkResult.Fail<>(errorSupplier);
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}
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boolean isSuccess();
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@Nullable
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T orElse(@Nullable T value);
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@Nullable
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static <R> R orElse(ChunkResult<? extends R> chunkResult, @Nullable R orElse) {
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R object = (R)chunkResult.orElse(null);
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return object != null ? object : orElse;
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}
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@Nullable
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String getError();
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ChunkResult<T> ifSuccess(Consumer<T> action);
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<R> ChunkResult<R> map(Function<T, R> mappingFunction);
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<E extends Throwable> T orElseThrow(Supplier<E> exceptionSupplier) throws E;
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public record Fail<T>(Supplier<String> error) implements ChunkResult<T> {
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@Override
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public boolean isSuccess() {
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return false;
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}
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@Nullable
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@Override
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public T orElse(@Nullable T value) {
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return value;
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}
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@Override
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public String getError() {
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return (String)this.error.get();
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}
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@Override
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public ChunkResult<T> ifSuccess(Consumer<T> action) {
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return this;
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}
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@Override
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public <R> ChunkResult<R> map(Function<T, R> mappingFunction) {
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return new ChunkResult.Fail(this.error);
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}
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@Override
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public <E extends Throwable> T orElseThrow(Supplier<E> exceptionSupplier) throws E {
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throw (Throwable)exceptionSupplier.get();
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}
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}
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public record Success<T>(T value) implements ChunkResult<T> {
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@Override
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public boolean isSuccess() {
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return true;
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}
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@Override
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public T orElse(@Nullable T value) {
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return this.value;
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}
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@Nullable
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@Override
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public String getError() {
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return null;
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}
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@Override
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public ChunkResult<T> ifSuccess(Consumer<T> action) {
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action.accept(this.value);
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return this;
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}
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@Override
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public <R> ChunkResult<R> map(Function<T, R> mappingFunction) {
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return (ChunkResult<R>)(new ChunkResult.Success<>(mappingFunction.apply(this.value)));
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}
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@Override
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public <E extends Throwable> T orElseThrow(Supplier<E> exceptionSupplier) throws E {
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return this.value;
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}
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}
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}
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