protected async Task EncapsulateNoValueAsync(LogicalExpression expression)
{
//value expressions are syncronous
if (expression is ValueExpression)
{
expression.Accept(this);
}
else
{
Result.Append("(");
await expression.AcceptAsync(this);
// trim spaces before adding a closing paren
while (Result[Result.Length - 1] == ' ')
{
Result.Remove(Result.Length - 1, 1);
}
Result.Append(") ");
}
}
private async Task <object> EvaluateAsync(LogicalExpression expression)
{
await expression.AcceptAsync(this);
return(Result);
}
