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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;
using System.Collections.Generic;
using System.Diagnostics;
using Microsoft.CodeAnalysis.Shared.Extensions;
namespace Microsoft.CodeAnalysis.CodeFixes.FullyQualify;
internal abstract partial class AbstractFullyQualifyService<TSimpleNameSyntax> where TSimpleNameSyntax : SyntaxNode
{
private readonly struct SymbolResult : IEquatable<SymbolResult>, IComparable<SymbolResult>
{
public readonly INamespaceOrTypeSymbol Symbol;
public readonly int Weight;
public readonly INamespaceOrTypeSymbol? OriginalSymbol;
public readonly IReadOnlyList<string> NameParts;
public SymbolResult(INamespaceOrTypeSymbol symbol, int weight)
: this(symbol, weight, originalSymbol: null)
{
}
private SymbolResult(INamespaceOrTypeSymbol symbol, int weight, INamespaceOrTypeSymbol? originalSymbol)
{
Symbol = symbol;
Weight = weight;
NameParts = INamespaceOrTypeSymbolExtensions.GetNameParts(symbol);
OriginalSymbol = originalSymbol;
}
public override bool Equals(object? obj)
=> obj is SymbolResult result && Equals(result);
public bool Equals(SymbolResult other)
=> Equals(Symbol, other.Symbol);
public override int GetHashCode()
=> Symbol.GetHashCode();
public SymbolResult WithSymbol(INamespaceOrTypeSymbol other)
=> new(other, Weight, Symbol);
public int CompareTo(SymbolResult other)
{
Debug.Assert(Symbol is INamespaceSymbol || !((INamedTypeSymbol)Symbol).IsGenericType);
Debug.Assert(other.Symbol is INamespaceSymbol || !((INamedTypeSymbol)other.Symbol).IsGenericType);
var diff = Weight - other.Weight;
if (diff != 0)
{
return diff;
}
return INamespaceOrTypeSymbolExtensions.CompareNameParts(
NameParts, other.NameParts, placeSystemNamespaceFirst: true);
}
}
}
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