75 lines
2.5 KiB
C#
75 lines
2.5 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using Microsoft.AspNetCore.Mvc.Core;
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using Microsoft.AspNetCore.Mvc.Infrastructure;
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namespace Microsoft.AspNetCore.Mvc
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{
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/// <summary>
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/// A type that wraps either an <typeparamref name="TValue"/> instance or an <see cref="ActionResult"/>.
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/// </summary>
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/// <typeparam name="TValue">The type of the result.</typeparam>
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public sealed class ActionResult<TValue> : IConvertToActionResult
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{
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/// <summary>
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/// Initializes a new instance of <see cref="ActionResult{TValue}"/> using the specified <paramref name="value"/>.
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/// </summary>
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/// <param name="value">The value.</param>
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public ActionResult(TValue value)
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{
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if (typeof(IActionResult).IsAssignableFrom(typeof(TValue)))
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{
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var error = Resources.FormatInvalidTypeTForActionResultOfT(typeof(TValue), "ActionResult<T>");
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throw new ArgumentException(error);
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}
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Value = value;
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}
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/// <summary>
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/// Initializes a new instance of <see cref="ActionResult{TValue}"/> using the specified <see cref="ActionResult"/>.
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/// </summary>
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/// <param name="result">The <see cref="ActionResult"/>.</param>
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public ActionResult(ActionResult result)
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{
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if (typeof(IActionResult).IsAssignableFrom(typeof(TValue)))
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{
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var error = Resources.FormatInvalidTypeTForActionResultOfT(typeof(TValue), "ActionResult<T>");
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throw new ArgumentException(error);
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}
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Result = result ?? throw new ArgumentNullException(nameof(result));
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}
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/// <summary>
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/// Gets the <see cref="ActionResult"/>.
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/// </summary>
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public ActionResult Result { get; }
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/// <summary>
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/// Gets the value.
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/// </summary>
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public TValue Value { get; }
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public static implicit operator ActionResult<TValue>(TValue value)
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{
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return new ActionResult<TValue>(value);
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}
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public static implicit operator ActionResult<TValue>(ActionResult result)
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{
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return new ActionResult<TValue>(result);
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}
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IActionResult IConvertToActionResult.Convert()
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{
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return Result ?? new ObjectResult(Value)
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{
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DeclaredType = typeof(TValue),
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};
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}
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}
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}
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