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MappedLoadable.java
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MappedLoadable.java
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package slimeknights.mantle.data.loadable.mapping;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import lombok.AccessLevel;
import lombok.RequiredArgsConstructor;
import net.minecraft.network.FriendlyByteBuf;
import slimeknights.mantle.data.loadable.ErrorFactory;
import slimeknights.mantle.data.loadable.Loadable;
import slimeknights.mantle.data.loadable.record.RecordLoadable;
import java.util.function.BiFunction;
import java.util.function.Function;
/** Represents a trivially mapped loadable that serializes/writes to network like another loadable */
@RequiredArgsConstructor(access = AccessLevel.PROTECTED)
public class MappedLoadable<F,T> implements Loadable<T> {
private final Loadable<F> base;
protected final BiFunction<F,ErrorFactory,T> from;
protected final BiFunction<T,ErrorFactory,F> to;
/** Creates a new loadable for a non-record loadable */
public static <T,F> Loadable<T> of(Loadable<F> base, BiFunction<F,ErrorFactory,T> from, BiFunction<T,ErrorFactory,F> to) {
return new MappedLoadable<>(base, from, to);
}
/** Creates a new loadable for a record loadable */
public static <T,F> RecordLoadable<T> of(RecordLoadable<F> base, BiFunction<F,ErrorFactory,T> from, BiFunction<T,ErrorFactory,F> to) {
return new Record<>(base, from, to);
}
/** Flattens the given mapping function */
public static <T,R> BiFunction<T,ErrorFactory,R> flatten(Function<T,R> function) {
return (value, error) -> function.apply(value);
}
@Override
public T convert(JsonElement element, String key) {
return from.apply(base.convert(element, key), ErrorFactory.JSON_SYNTAX_ERROR);
}
@Override
public JsonElement serialize(T object) {
return base.serialize(to.apply(object, ErrorFactory.RUNTIME));
}
@Override
public T fromNetwork(FriendlyByteBuf buffer) {
return from.apply(base.fromNetwork(buffer), ErrorFactory.DECODER_EXCEPTION);
}
@Override
public void toNetwork(T object, FriendlyByteBuf buffer) {
base.toNetwork(to.apply(object, ErrorFactory.ENCODER_EXCEPTION), buffer);
}
/** Implementation for records */
private static class Record<F,T> extends MappedLoadable<F,T> implements RecordLoadable<T> {
private final RecordLoadable<F> base;
protected Record(RecordLoadable<F> base, BiFunction<F,ErrorFactory,T> from, BiFunction<T,ErrorFactory,F> to) {
super(base, from, to);
this.base = base;
}
@Override
public T deserialize(JsonObject json) {
return from.apply(base.deserialize(json), ErrorFactory.JSON_SYNTAX_ERROR);
}
@Override
public void serialize(T object, JsonObject json) {
base.serialize(to.apply(object, ErrorFactory.RUNTIME), json);
}
}
}