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HostIndexedProperty.cs
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86 lines (66 loc) · 2.65 KB
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using System;
using System.Reflection;
using Microsoft.ClearScript.Util;
namespace Microsoft.ClearScript
{
internal sealed class HostIndexedProperty : HostTarget
{
private static readonly string[] auxMethodNames = { "get", "set" };
private readonly HostItem target;
private readonly string name;
public HostIndexedProperty(HostItem target, string name)
{
this.target = target;
this.name = name;
}
#region Object overrides
public override string ToString()
{
return MiscHelpers.FormatInvariant("HostIndexedProperty:{0}", name);
}
#endregion
#region HostTarget overrides
public override Type Type => typeof(void);
public override object Target => this;
public override object InvokeTarget => null;
public override object DynamicInvokeTarget => null;
public override HostTargetFlags GetFlags(IHostInvokeContext context)
{
return HostTargetFlags.None;
}
public override string[] GetAuxMethodNames(IHostInvokeContext context, BindingFlags bindFlags)
{
return auxMethodNames;
}
public override bool TryInvokeAuxMember(IHostInvokeContext context, string memberName, BindingFlags invokeFlags, object[] args, object[] bindArgs, out object result)
{
if (invokeFlags.HasFlag(BindingFlags.InvokeMethod))
{
if (memberName == "get")
{
result = target.InvokeMember(name, BindingFlags.GetProperty, args, bindArgs, null, true);
return true;
}
if (memberName == "set")
{
result = target.InvokeMember(name, BindingFlags.SetProperty, args, bindArgs, null, true);
return true;
}
}
result = null;
return false;
}
public override bool TryInvoke(IHostInvokeContext context, BindingFlags invokeFlags, object[] args, object[] bindArgs, out object result)
{
result = target.InvokeMember(name, invokeFlags.HasFlag(BindingFlags.SetField) ? BindingFlags.SetProperty : BindingFlags.GetProperty, args, bindArgs, null, true);
return true;
}
public override Invocability GetInvocability(BindingFlags bindFlags, Type accessContext, ScriptAccess defaultAccess, bool ignoreDynamic)
{
return Invocability.Delegate;
}
#endregion
}
}