/*
 * Copyright 2022 Alibaba Group Holding Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  	http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.alibaba.graphscope.utils.array.impl;

import com.alibaba.graphscope.ds.PrimitiveTypedArray;
import com.alibaba.graphscope.utils.array.PrimitiveArray;

/**
 * Provide array interface with immutable typed array.
 */
public class TypedBackendPrimitiveArray<T> implements PrimitiveArray<T> {

    private PrimitiveTypedArray<T> backend;

    public TypedBackendPrimitiveArray(PrimitiveTypedArray<T> backend) {
        this.backend = backend;
    }

    @Override
    public T get(int index) {
        return backend.get(index);
    }

    @Override
    public void set(int index, T value) {
        throw new IllegalStateException("Not implemented");
    }

    @Override
    public int size() {
        return (int) backend.getLength();
    }
}
