HelloWorldHelloWorld.cs

helloworld.cs

using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;

CompilationUnit()
    .WithUsings(
        SingletonList(
            UsingDirective(
                IdentifierName("System")
            )
        )
    )
    .WithMembers(
        SingletonList<MemberDeclarationSyntax>(
            ClassDeclaration("Program")
            .WithModifiers(
                TokenList(
                    Token(SyntaxKind.PublicKeyword),
                    Token(SyntaxKind.StaticKeyword)
                )
            )
            .WithMembers(
                SingletonList<MemberDeclarationSyntax>(
                    MethodDeclaration(
                        PredefinedType(
                            Token(SyntaxKind.VoidKeyword)
                        ),
                        "Main"
                    )
                    .WithModifiers(
                        TokenList(
                            Token(SyntaxKind.PublicKeyword),
                            Token(SyntaxKind.StaticKeyword)
                        )
                    )
                    .WithBody(
                        Block(
                            ExpressionStatement(
                                InvocationExpression(
                                    MemberAccessExpression(
                                        SyntaxKind.SimpleMemberAccessExpression,
                                        IdentifierName("Console"),
                                        IdentifierName("WriteLine")
                                    )
                                )
                                .WithArgumentList(
                                    ArgumentList(
                                        SingletonSeparatedList(
                                            Argument(
                                                LiteralExpression(
                                                    SyntaxKind.StringLiteralExpression,
                                                    Literal("Hello world!")
                                                )
                                            )
                                        )
                                    )
                                )
                            )
                        )
                    )
                )
            )
        )
    )
    .NormalizeWhitespace()
    .WriteTo(Console.Out);