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HostList.cs
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81 lines (65 loc) · 1.93 KB
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using System;
using System.Collections;
using System.Collections.Generic;
using Microsoft.ClearScript.Util;
namespace Microsoft.ClearScript
{
internal interface IHostList
{
int Count { get; }
object this[int index] { get; set; }
}
internal sealed class HostList : IHostList
{
private readonly ScriptEngine engine;
private readonly IList list;
private readonly Type elementType;
public HostList(ScriptEngine engine, IList list, Type elementType)
{
this.engine = engine;
this.list = list;
this.elementType = elementType;
}
#region IHostList implementation
public int Count
{
get { return list.Count; }
}
public object this[int index]
{
get { return engine.PrepareResult(list[index], elementType, ScriptMemberFlags.None, true); }
set { list[index] = value; }
}
#endregion
}
internal sealed class HostList<T> : IHostList
{
private readonly ScriptEngine engine;
private readonly IList<T> list;
public HostList(ScriptEngine engine, IList<T> list)
{
this.engine = engine;
this.list = list;
}
#region IHostList implementation
public int Count
{
get { return list.Count; }
}
public object this[int index]
{
get { return engine.PrepareResult(list[index], ScriptMemberFlags.None, true); }
set
{
if (!typeof(T).IsAssignableFrom(ref value))
{
throw new InvalidOperationException("Assignment invalid due to type mismatch");
}
list[index] = (T)value;
}
}
#endregion
}
}