// 
// Decompiled by Procyon v0.6.0
// 

package com.hypixel.hytale.component;

import javax.annotation.Nullable;
import javax.annotation.Nonnull;

public class Ref<ECS_TYPE>
{
    public static final Ref<?>[] EMPTY_ARRAY;
    @Nonnull
    private final Store<ECS_TYPE> store;
    private volatile int index;
    private transient volatile int hashCode;
    private volatile Throwable invalidatedBy;
    
    public Ref(@Nonnull final Store<ECS_TYPE> store) {
        this(store, Integer.MIN_VALUE);
    }
    
    public Ref(@Nonnull final Store<ECS_TYPE> store, final int index) {
        this.store = store;
        this.index = index;
        this.hashCode = this.hashCode0();
    }
    
    @Nonnull
    public Store<ECS_TYPE> getStore() {
        return this.store;
    }
    
    public int getIndex() {
        return this.index;
    }
    
    void setIndex(final int index) {
        this.index = index;
    }
    
    void invalidate() {
        this.index = Integer.MIN_VALUE;
        this.hashCode = this.hashCode0();
        this.invalidatedBy = new Throwable();
    }
    
    void invalidate(@Nullable final Throwable invalidatedBy) {
        this.index = Integer.MIN_VALUE;
        this.hashCode = this.hashCode0();
        this.invalidatedBy = ((invalidatedBy != null) ? invalidatedBy : new Throwable());
    }
    
    public void validate() {
        if (this.index == Integer.MIN_VALUE) {
            throw new IllegalStateException("Invalid entity reference!", this.invalidatedBy);
        }
    }
    
    public boolean isValid() {
        return this.index != Integer.MIN_VALUE;
    }
    
    @Override
    public boolean equals(@Nullable final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || this.getClass() != o.getClass()) {
            return false;
        }
        final Ref<?> ref = (Ref<?>)o;
        return this.index == ref.index && this.store.equals(ref.store);
    }
    
    public boolean equals(@Nullable final Ref<ECS_TYPE> o) {
        return this == o || (o != null && this.index == o.index && this.store.equals(o.store));
    }
    
    @Override
    public int hashCode() {
        return this.hashCode;
    }
    
    public int hashCode0() {
        int result = this.store.hashCode();
        result = 31 * result + this.index;
        return result;
    }
    
    @Nonnull
    @Override
    public String toString() {
        return "Ref{store=" + String.valueOf(this.store.getClass()) + "@" + this.store.hashCode() + ", index=" + this.index;
    }
    
    static {
        EMPTY_ARRAY = new Ref[0];
    }
}