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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Reflection;
using System.Diagnostics.Contracts;
namespace System.Runtime.CompilerServices
{
[Serializable]
[AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter, Inherited=false)]
public sealed class DateTimeConstantAttribute : CustomConstantAttribute
{
public DateTimeConstantAttribute(long ticks)
{
date = new System.DateTime(ticks);
}
public override Object Value
{
get
{
return date;
}
}
internal static DateTime GetRawDateTimeConstant(CustomAttributeData attr)
{
Contract.Requires(attr.Constructor.DeclaringType == typeof(DateTimeConstantAttribute));
Contract.Requires(attr.ConstructorArguments.Count == 1);
foreach (CustomAttributeNamedArgument namedArgument in attr.NamedArguments)
{
if (namedArgument.MemberInfo.Name.Equals("Value"))
{
return new DateTime((long)namedArgument.TypedValue.Value);
}
}
// Look at the ctor argument if the "Value" property was not explicitly defined.
return new DateTime((long)attr.ConstructorArguments[0].Value);
}
private System.DateTime date;
}
}
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