/*
 * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
 *
 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
 * portions of the Software.
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package com.oracle.truffle.js.runtime.builtins;

import java.util.Objects;

import com.oracle.truffle.api.object.Shape;
import com.oracle.truffle.js.runtime.JSRuntime;
import com.oracle.truffle.js.runtime.array.ArrayAllocationSite;
import com.oracle.truffle.js.runtime.array.ScriptArray;
import com.oracle.truffle.js.runtime.objects.JSNonProxyObject;

Base class for Array, ArgumentsObject, and %Object.prototype%.
/**
 * Base class for Array, ArgumentsObject, and %Object.prototype%.
 */
public abstract class JSArrayBase extends JSNonProxyObject {
    protected JSArrayBase(Shape shape, ScriptArray arrayType, Object array, ArrayAllocationSite site, long length, int usedLength, int indexOffset, int arrayOffset, int holeCount) {
        super(shape);
        assert JSRuntime.isRepresentableAsUnsignedInt(length);
        this.arrayStorage = Objects.requireNonNull(array);
        this.arrayStrategy = arrayType;
        this.length = (int) length;
        this.usedLength = usedLength;
        this.indexOffset = indexOffset;
        this.arrayOffset = arrayOffset;
        this.holeCount = holeCount;
        this.allocationSite = site;
    }

    int length;
    int usedLength;
    int indexOffset;
    int arrayOffset;
    int holeCount;
    Object arrayStorage;
    ScriptArray arrayStrategy;
    ArrayAllocationSite allocationSite;

    @SuppressWarnings("static-method")
    public final ArrayAccess arrayAccess() {
        return ArrayAccess.SINGLETON;
    }

    public final ScriptArray getArrayType() {
        return arrayStrategy;
    }

    public final void setArrayType(ScriptArray arrayType) {
        this.arrayStrategy = arrayType;
    }

    public final Object getArray() {
        return arrayStorage;
    }

    public final void setArray(Object array) {
        this.arrayStorage = Objects.requireNonNull(array);
    }
}