Roslyn 中的“GlobalStatementSyntax”语法节点类型是什么

Question

I was investigating classes of syntax nodes which implement MemberDeclarationSyntax in Roslyn and encountered GlobalStatementSyntax class. What kind of code generates syntax tree with GlobalStatementSyntax nodes? And why GlobalStatementSyntax is derived from MemberDeclarationSyntax ? Can such node represent a member of a type?

Answer 1

Two minutes of experimentation confirmed that you get those if you use the new Top-level statements feature. That is, if your entire program is:

Console.WriteLine(args.Count);

(With no class , no void Main , etc)

Then the Roslyn Quoter generates this structure:

CompilationUnit()
.WithMembers(
    SingletonList<MemberDeclarationSyntax>(
        GlobalStatement(
            ExpressionStatement(
                InvocationExpression(
                    MemberAccessExpression(
                        SyntaxKind.SimpleMemberAccessExpression,
                        IdentifierName("Console"),
                        IdentifierName("WriteLine")))
                .WithArgumentList(
                    ArgumentList(
                        SingletonSeparatedList<ArgumentSyntax>(
                            Argument(
                                MemberAccessExpression(
                                    SyntaxKind.SimpleMemberAccessExpression,
                                    IdentifierName("args"),
                                    IdentifierName("Count"))))))))))
.NormalizeWhitespace()