// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using ILLink.Shared.DataFlow;
using Mono.Linker;
using FieldDefinition = Mono.Cecil.FieldDefinition;
using TypeDefinition = Mono.Cecil.TypeDefinition;
 
 
namespace ILLink.Shared.TrimAnalysis
{
 
	/// <summary>
	/// A representation of a field. Typically a result of ldfld.
	/// </summary>
	internal sealed partial record FieldValue
	{
		public FieldValue (TypeDefinition? staticType, FieldDefinition fieldToLoad, DynamicallyAccessedMemberTypes dynamicallyAccessedMemberTypes)
		{
			StaticType = staticType == null ? null : new (staticType);
			Field = fieldToLoad;
			DynamicallyAccessedMemberTypes = dynamicallyAccessedMemberTypes;
		}
 
		public readonly FieldDefinition Field;
 
		public override DynamicallyAccessedMemberTypes DynamicallyAccessedMemberTypes { get; }
 
		public override IEnumerable<string> GetDiagnosticArgumentsForAnnotationMismatch ()
			=> new string[] { Field.GetDisplayName () };
 
		public override SingleValue DeepCopy () => this; // This value is immutable
 
		public override string ToString () => this.ValueToString (Field, DynamicallyAccessedMemberTypes);
	}
 
}