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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.
namespace Microsoft.AspNetCore.Mvc.Abstractions;
/// <summary>
/// Extension methods for <see cref="ActionDescriptor"/>.
/// </summary>
public static class ActionDescriptorExtensions
{
/// <summary>
/// Gets the value of a property from the <see cref="ActionDescriptor.Properties"/> collection
/// using the provided value of <typeparamref name="T"/> as the key.
/// </summary>
/// <typeparam name="T">The type of the property.</typeparam>
/// <param name="actionDescriptor">The action descriptor.</param>
/// <returns>The property or the default value of <typeparamref name="T"/>.</returns>
public static T? GetProperty<T>(this ActionDescriptor actionDescriptor)
{
ArgumentNullException.ThrowIfNull(actionDescriptor);
if (actionDescriptor.Properties.TryGetValue(typeof(T), out var value))
{
return (T?)value;
}
else
{
return default!;
}
}
/// <summary>
/// Sets the value of an property in the <see cref="ActionDescriptor.Properties"/> collection using
/// the provided value of <typeparamref name="T"/> as the key.
/// </summary>
/// <typeparam name="T">The type of the property.</typeparam>
/// <param name="actionDescriptor">The action descriptor.</param>
/// <param name="value">The value of the property.</param>
public static void SetProperty<T>(this ActionDescriptor actionDescriptor, T value)
{
ArgumentNullException.ThrowIfNull(actionDescriptor);
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
actionDescriptor.Properties[typeof(T)] = value;
}
}
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