Util.Compile and Util.Run questions

mcfrank · September 2017

Before I ask my questions I would like to state my end goal. I would like to do the following

1)Call a Subscript and output its Dump() in the main window.
2) Return a value from a Subscript.
3) Input a highly type object into a subscript.

I have manage to achieve 3 and sort of achieve 1 and 2

I can achieve 1 by using the Util.Run() method and also pass in string argument which is pretty nice. I also get the subscript .Dump() into my Results view window. Pretty cool and useful.

I can achieve 3 and 2 by using the following code and having the TestObject defined in MyExtensions script.

Parent Script


void Main()
{
	Directory.SetCurrentDirectory (Path.GetDirectoryName (Util.CurrentQueryPath));
	var details = new TestObject {  /* whatever I want */ }

	var compiledQuery = Util.Compile(@".\SubTestQuery.linq", false);
	var retVal = compiledQuery.Run(QueryResultFormat.Html, details);
		retVal.ReturnValue.Dump();

}

SubScript with working return value


int Main(EnvironmentDetails input)
{
	"Test Dump".Dump();
	return 5;
}

Using this method though I do not get my "Test Dump".Dump() in my results window in the parent script.

Once I change the subscript return value to async Task my ReturnValue becomes null. I still do not get the "Test Dump".Dump() in my parent script results window either which is expected from the result of the above test case.


async Task<int> Main(EnvironmentDetails input)
{
	"Test Dump".Dump();
	return 5;
}

Is it possible to achieve all 3 ( well I guess 4) goals ? I have ran these scripts in the release version of linqpad 5 and the Download LINQPad 5.23.05 (Any CPU) beta.

JoeAlbahari · September 2017

To get what was dumped by the your subscript, you call AsString():

var compiledQuery = Util.Compile ("...");
var retVal = compiledQuery.Run (QueryResultFormat.Html, ...);
retVal.AsString().Dump();        // This is what was dumped
retVal.ReturnValue.Dump();

mcfrank · October 2017

awesome that works great and looks the same once you wrap the dumped output into

Util.RawHtml(retVal.AsString()).Dump();

I must have thought I was looking at the contents of the linqpad document instead of the dumped output in raw html.

The subquery with a Task returns null though and I have been playing around with the following

Parent Query

void Main()
{
	Directory.SetCurrentDirectory(Path.GetDirectoryName(Util.CurrentQueryPath));
	var details = new TestObject {   test = "Hey I'm a test" };

	var compiledQuery = Util.Compile(@".\SubTestQuery.linq", false);
	var retVal = compiledQuery.Run(QueryResultFormat.Html, details);
	
	Util.RawHtml(retVal.AsString()).Dump();
	retVal.ReturnValue.Dump();

	retVal.ReturnValueAsync.Status.Dump("Status");
	retVal.ReturnValueAsync.Wait();
	retVal.ReturnValueAsync.Result.Dump("Result");

}

SubQuery

async Task<int> Main(TestObject input)
{
	await Task.Run(delegate()
	{
			"Action".Dump("Action Action Action");
	});
	
	input.test.Dump("In Sub Script");
	return 22;
}

but honestly I think should reformulated my approach on my designs instead of getting this to work. I could always switch to a non Task subquery and get my results from that.

Util.Compile and Util.Run questions

Comments