// 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 Microsoft.CodeAnalysis.Shared.Utilities;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.FindSymbols;

internal sealed partial class SyntaxTreeIndex
{
    private readonly struct LiteralInfo(BloomFilter literalsFilter)
    {
        private readonly BloomFilter _literalsFilter = literalsFilter ?? throw new ArgumentNullException(nameof(literalsFilter));

        /// <summary>
        /// Returns true when the identifier is probably (but not guaranteed) to be within the
        /// syntax tree.  Returns false when the identifier is guaranteed to not be within the
        /// syntax tree.
        /// </summary>
        public bool ProbablyContainsStringValue(string value)
            => _literalsFilter.ProbablyContains(value);

        public bool ProbablyContainsInt64Value(long value)
            => _literalsFilter.ProbablyContains(value);

        public void WriteTo(ObjectWriter writer)
            => _literalsFilter.WriteTo(writer);

        public static LiteralInfo? TryReadFrom(ObjectReader reader)
        {
            try
            {
                var literalsFilter = BloomFilter.ReadFrom(reader);

                return new LiteralInfo(literalsFilter);
            }
            catch (Exception)
            {
            }

            return null;
        }
    }
}