Boolean operators not working for dynamic objects

Hello,

I’ve encountered this issue when trying to use boolean operators with dynamic properties:

dynamic dyn = new ExpandoObject();
dyn.val1 = 100;
dyn.val2 = 200;

var interpreter = new Interpreter();
interpreter.SetVariable("dyn", dyn);

interpreter.Eval("dyn.val1 == 100"); //returns true, as expected
interpreter.Eval("dyn.val1 == 100 && dyn.val2 == 200"); // throws exception: "Invalid argument value\r\nParameter name: operation

Please advise if this is indeed a bug or something is not properly configured.

[rotsin]

I made my very first PR 😃

[rotsin]

In

private Expression ParseConditionalAnd()
{
	var left = ParseLogicalOr();
	while (_token.id == TokenId.DoubleAmphersand)
	{
		NextToken();
		var right = ParseLogicalOr();
		CheckAndPromoteOperands(typeof(ParseSignatures.ILogicalSignatures), ref left, ref right);
		left = GenerateBinary(ExpressionType.AndAlso, left, right);
	}
	return left;
}

which is called when there are dynamic expressions, expression type AndAlso is passed, problem is that Microsoft.CSharp.RuntimeBinder.Binder.BinaryOperation does not seem to support this type of operation. Changing it to And seems to resolve the issue, also added a small test to check that Andi’s scenario works and it does, and all other tests run successfully.

Cound not push my branch to the repo (I may need rights), but the fix should be reasonably simple that there is no need to get my on the PR pipeline.