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ByRefArg.cs
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147 lines (115 loc) · 3.64 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 interface IByRefArg
{
Type Type { get; }
object Value { get; set; }
}
internal interface IOutArg : IByRefArg
{
}
internal interface IRefArg : IByRefArg
{
}
internal abstract class ByRefArg<T> : HostTarget, IByRefArg
{
private readonly HostVariable<T> target;
protected ByRefArg(HostVariable<T> target)
{
this.target = target;
}
public T Value
{
get { return target.Value; }
set { target.Value = value; }
}
#region HostTarget overrides
public override Type Type
{
get { return target.Type; }
}
public override object Target
{
get { return this; }
}
public override object InvokeTarget
{
get { return target.InvokeTarget; }
}
public override object DynamicInvokeTarget
{
get { return target.DynamicInvokeTarget; }
}
public override HostTargetFlags Flags
{
get { return target.Flags; }
}
public override string[] GetAuxMethodNames(IHostInvokeContext context, BindingFlags bindFlags)
{
return target.GetAuxMethodNames(context, bindFlags);
}
public override string[] GetAuxPropertyNames(IHostInvokeContext context, BindingFlags bindFlags)
{
return target.GetAuxPropertyNames(context, bindFlags);
}
public override bool TryInvokeAuxMember(IHostInvokeContext context, string name, BindingFlags invokeFlags, object[] args, object[] bindArgs, out object result)
{
return target.TryInvokeAuxMember(context, name, invokeFlags, args, bindArgs, out result);
}
public override bool TryInvoke(IHostInvokeContext context, BindingFlags invokeFlags, object[] args, object[] bindArgs, out object result)
{
return target.TryInvoke(context, invokeFlags, args, bindArgs, out result);
}
public override Invocability GetInvocability(BindingFlags bindFlags, Type accessContext, ScriptAccess defaultAccess, bool ignoreDynamic)
{
return target.GetInvocability(bindFlags, accessContext, defaultAccess, ignoreDynamic);
}
#endregion
#region IByRefArg implementation
object IByRefArg.Value
{
get { return target.Value; }
set { ((IHostVariable)target).Value = value; }
}
#endregion
}
internal sealed class OutArg<T> : ByRefArg<T>, IOutArg
{
public OutArg(HostVariable<T> target)
: base(target)
{
}
public OutArg(T initValue)
: this(new HostVariable<T>(initValue))
{
}
#region Object overrides
public override string ToString()
{
return MiscHelpers.FormatInvariant("out {0}", Type.GetFriendlyName());
}
#endregion
}
internal sealed class RefArg<T> : ByRefArg<T>, IRefArg
{
public RefArg(HostVariable<T> target)
: base(target)
{
}
public RefArg(T initValue)
: this(new HostVariable<T>(initValue))
{
}
#region Object overrides
public override string ToString()
{
return MiscHelpers.FormatInvariant("ref {0}", Type.GetFriendlyName());
}
#endregion
}
}