If Main is async then call to it needs to be awaited.

when there is an "async" before the main function. <p d

Seems the code to do so is trivial with Roslyn: <div class="highlight highlight-so

Support C# Program queries where Main is async about linqpadless HOT 3 CLOSED

atifaziz commented on August 11, 2024

Support C# Program queries where Main is async

from linqpadless.

Comments (3)

atifaziz commented on August 11, 2024 1

when there is an "async" before the main function.

How do you find Main in the code? What if there's a trial version of some Main that's commented out (or conditionally compiled out) and using a quick & dirty trick like regular expressions to sniff out the async before Main picks on the wrong thing?

The first thing is "can do", then "do it pretty"!

True but often when you have it working one way then there's a lesser urge to make it pretty. :)

from linqpadless.

atifaziz commented on August 11, 2024 1

Seems the code to do so is trivial with Roslyn:

var tests =
    from source in new[]
    {
        @"
        /*
        async Task Main() {
            await Task.Delay(TimeSpan.FromSeconds(1));
            Console.WriteLine(DateTime.Now);
        }
        */
        async void Foo() {}
        void Main() {}
        ",
        
        @"
        async void Foo() {}
        async void Main() {
            await Task.Delay(TimeSpan.FromSeconds(1));
            Console.WriteLine(DateTime.Now);
        }
        "
    }
    select
        CSharpSyntaxTree.ParseText(source).GetRoot()
            .DescendantNodes().OfType<MethodDeclarationSyntax>()
            .Any(md => "Main" == (string) md.Identifier.Text
                       && md.Modifiers.Any(m => m.IsKind(SyntaxKind.AsyncKeyword)));

foreach (var test in tests)
    Console.WriteLine(test);