WriteAccessRequiredAttribute

Description

通过将 WriteAccessRequiredAttribute 与 ReadOnlyAttribute 结合使用，您就可以指定哪个结构方法和属性需要调用写入访问。

When adding the ReadOnly attribute on a native container, you are indicating that only operations that read data can be performed on this container. When this is the case, methods and properties on the container that modify the array cannot be used. The WriteAccessRequired attribute indicates which methods and properties cannot be used on a container annotated with ReadOnly.

using Unity.Collections.LowLevel.Unsafe;
using Unity.Collections;
using UnityEngine;

[NativeContainer]
public struct MyList<T> where T : struct
{
    public int Length { get; private set; }

    [WriteAccessRequired]
    public void Grow(int capacity)
    {
        // ...
    }
}

public class MyMonoBehaviour : MonoBehaviour
{
    [ReadOnly]
    MyList<int> readOnlyList;

    MyList<int> writableList = new MyList<int>();

    public void OnUpdate()
    {
        writableList.Grow(10); // Ok
        readOnlyList.Grow(10); // Illegal
    }
}