PredicateSymbolFilterRule.cs

// Copyright (c) Josef Pihrt and Contributors. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using Microsoft.CodeAnalysis;

namespace Roslynator.FindSymbols;

internal class PredicateSymbolFilterRule : SymbolFilterRule
{
    private readonly Func<ISymbol, bool> _isMatch;
    private readonly Func<ISymbol, bool> _isApplicable;

    public PredicateSymbolFilterRule(Func<ISymbol, bool> isMatch, Func<ISymbol, bool> isApplicable, SymbolFilterReason reason)
    {
        _isMatch = isMatch;
        _isApplicable = isApplicable;
        Reason = reason;
    }

    public override bool IsApplicable(ISymbol value) => _isApplicable(value);

    public override bool IsMatch(ISymbol value) => _isMatch(value);

    public override SymbolFilterReason Reason { get; }

    public PredicateSymbolFilterRule Invert()
    {
        return new PredicateSymbolFilterRule(f => !_isMatch(f), _isApplicable, Reason);
    }
}