// 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.Immutable;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.CSharp.Scripting.Hosting;
using Microsoft.CodeAnalysis.Interactive;
using Microsoft.CodeAnalysis.Text;
 
namespace Microsoft.CodeAnalysis.Editor.CSharp.Interactive;
 
internal sealed class CSharpInteractiveEvaluatorLanguageInfoProvider : InteractiveEvaluatorLanguageInfoProvider
{
    public static readonly CSharpInteractiveEvaluatorLanguageInfoProvider Instance = new();
 
    private CSharpInteractiveEvaluatorLanguageInfoProvider()
    {
    }
 
    private static readonly CSharpParseOptions s_parseOptions =
        new(languageVersion: LanguageVersion.Latest, kind: SourceCodeKind.Script);
 
    public override string LanguageName
        => LanguageNames.CSharp;
 
    public override ParseOptions ParseOptions
        => s_parseOptions;
 
    public override CommandLineParser CommandLineParser
        => CSharpCommandLineParser.Script;
 
    public override CompilationOptions GetSubmissionCompilationOptions(string name, MetadataReferenceResolver metadataReferenceResolver, SourceReferenceResolver sourceReferenceResolver, ImmutableArray<string> imports)
        => CSharpScriptCompiler.WithTopLevelBinderFlags(
            new CSharpCompilationOptions(
                OutputKind.DynamicallyLinkedLibrary,
                scriptClassName: name,
                allowUnsafe: true,
                xmlReferenceResolver: null, // no support for permission set and doc includes in interactive
                usings: imports,
                sourceReferenceResolver: sourceReferenceResolver,
                metadataReferenceResolver: metadataReferenceResolver,
                assemblyIdentityComparer: DesktopAssemblyIdentityComparer.Default));
 
    public override bool IsCompleteSubmission(string text)
        => SyntaxFactory.IsCompleteSubmission(SyntaxFactory.ParseSyntaxTree(SourceText.From(text, encoding: null, SourceHashAlgorithms.Default), options: s_parseOptions));
 
    public override string InteractiveResponseFileName
        => "CSharpInteractive.rsp";
 
    public override Type ReplServiceProviderType
        => typeof(CSharpReplServiceProvider);
 
    public override string Extension => ".csx";
}