src/game/java/net/minecraft/util/random/Weight.java

package net.minecraft.util.random;

import com.mojang.logging.LogUtils;
import com.mojang.serialization.Codec;
import net.minecraft.SharedConstants;
import net.minecraft.Util;
import org.slf4j.Logger;

public class Weight {
    public static final Codec<Weight> CODEC = Codec.INT.xmap(Weight::of, Weight::asInt);
    private static final Weight ONE = new Weight(1);
    private static final Logger LOGGER = LogUtils.getLogger();
    private final int value;

    private Weight(int p_146280_) {
        this.value = p_146280_;
    }

    public static Weight of(int p_146283_) {
        if (p_146283_ == 1) {
            return ONE;
        } else {
            validateWeight(p_146283_);
            return new Weight(p_146283_);
        }
    }

    public int asInt() {
        return this.value;
    }

    private static void validateWeight(int p_146285_) {
        if (p_146285_ < 0) {
            throw (IllegalArgumentException)Util.pauseInIde(new IllegalArgumentException("Weight should be >= 0"));
        } else {
            if (p_146285_ == 0 && SharedConstants.IS_RUNNING_IN_IDE) {
                LOGGER.warn("Found 0 weight, make sure this is intentional!");
            }
        }
    }

    @Override
    public String toString() {
        return Integer.toString(this.value);
    }

    @Override
    public int hashCode() {
        return Integer.hashCode(this.value);
    }

    @Override
    public boolean equals(Object p_146287_) {
        return this == p_146287_ ? true : p_146287_ instanceof Weight && this.value == ((Weight)p_146287_).value;
    }
}