﻿// 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.

#nullable disable

using System;
using Microsoft.CodeAnalysis;
using Roslyn.Utilities;

namespace Microsoft.VisualStudio.LanguageServices.Implementation.CodeModel
{
    internal class CodeModelEvent : IEquatable<CodeModelEvent>
    {
        public readonly SyntaxNode Node;
        public readonly SyntaxNode ParentNode;
        public CodeModelEventType Type;

        public CodeModelEvent(SyntaxNode node, SyntaxNode parentNode, CodeModelEventType type)
        {
            this.Node = node;
            this.ParentNode = parentNode;
            this.Type = type;
        }

        public override int GetHashCode()
            => Hash.Combine(Node, Hash.Combine(ParentNode, ((int)Type).GetHashCode()));

        public override bool Equals(object obj)
            => Equals(obj as CodeModelEvent);

        public bool Equals(CodeModelEvent other)
        {
            if (other == null)
            {
                return false;
            }

            return Node == other.Node
                && ParentNode == other.ParentNode
                && Type == other.Type;
        }
    }
}
