// 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.Immutable;
using Microsoft.CodeAnalysis.CodeStyle;
using Microsoft.CodeAnalysis.CSharp.CodeGeneration;
using Microsoft.CodeAnalysis.CSharp.CodeStyle;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Diagnostics;
 
namespace Microsoft.CodeAnalysis.CSharp.UseExpressionBody
{
    internal class UseExpressionBodyForConstructorsHelper :
        UseExpressionBodyHelper<ConstructorDeclarationSyntax>
    {
        public static readonly UseExpressionBodyForConstructorsHelper Instance = new();
 
        private UseExpressionBodyForConstructorsHelper()
            : base(IDEDiagnosticIds.UseExpressionBodyForConstructorsDiagnosticId,
                   EnforceOnBuildValues.UseExpressionBodyForConstructors,
                   new LocalizableResourceString(nameof(CSharpAnalyzersResources.Use_expression_body_for_constructor), CSharpAnalyzersResources.ResourceManager, typeof(CSharpAnalyzersResources)),
                   new LocalizableResourceString(nameof(CSharpAnalyzersResources.Use_block_body_for_constructor), CSharpAnalyzersResources.ResourceManager, typeof(CSharpAnalyzersResources)),
                   CSharpCodeStyleOptions.PreferExpressionBodiedConstructors,
                   ImmutableArray.Create(SyntaxKind.ConstructorDeclaration))
        {
        }
 
        public override CodeStyleOption2<ExpressionBodyPreference> GetExpressionBodyPreference(CSharpCodeGenerationOptions options)
            => options.PreferExpressionBodiedConstructors;
 
        protected override BlockSyntax? GetBody(ConstructorDeclarationSyntax declaration)
            => declaration.Body;
 
        protected override ArrowExpressionClauseSyntax? GetExpressionBody(ConstructorDeclarationSyntax declaration)
            => declaration.ExpressionBody;
 
        protected override SyntaxToken GetSemicolonToken(ConstructorDeclarationSyntax declaration)
            => declaration.SemicolonToken;
 
        protected override ConstructorDeclarationSyntax WithSemicolonToken(ConstructorDeclarationSyntax declaration, SyntaxToken token)
            => declaration.WithSemicolonToken(token);
 
        protected override ConstructorDeclarationSyntax WithExpressionBody(ConstructorDeclarationSyntax declaration, ArrowExpressionClauseSyntax? expressionBody)
            => declaration.WithExpressionBody(expressionBody);
 
        protected override ConstructorDeclarationSyntax WithBody(ConstructorDeclarationSyntax declaration, BlockSyntax? body)
            => declaration.WithBody(body);
 
        protected override bool CreateReturnStatementForExpression(SemanticModel semanticModel, ConstructorDeclarationSyntax declaration) => false;
    }
}