// 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.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading;
using Microsoft.CodeAnalysis.Text;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.Host
{
    /// <summary>
    /// Factory service for creating syntax trees.
    /// </summary>
    internal interface ISyntaxTreeFactoryService : ILanguageService
    {
        ParseOptions GetDefaultParseOptions();
 
        ParseOptions GetDefaultParseOptionsWithLatestLanguageVersion();
 
        ParseOptions TryParsePdbParseOptions(IReadOnlyDictionary<string, string> compilationOptionsMetadata);
 
        /// <summary>
        /// Returns true if the two options differ only by preprocessor directives; this allows for us to reuse trees
        /// if they don't have preprocessor directives in them.
        /// </summary>
        bool OptionsDifferOnlyByPreprocessorDirectives(ParseOptions options1, ParseOptions options2);
 
        // new tree from root node
        SyntaxTree CreateSyntaxTree(string? filePath, ParseOptions options, Encoding? encoding, SourceHashAlgorithm checksumAlgorithm, SyntaxNode root);
 
        // new tree from text
        SyntaxTree ParseSyntaxTree(string? filePath, ParseOptions options, SourceText text, CancellationToken cancellationToken);
    }
}