PowerShell DSLs: Hash table input

lassOne way to take PowerShell DSL input is in the form of a hash table. Taking from the Data Type with Builder example, you could write input as:

 @{
          kind = 'class'
          name = 'MyClass'
          accessibilty = 'public'
          members = @{
               type = 'string'
               name = 'S'
          }
     }

How do you consume this input? Here's an example. (Note that the code generation side is not the focal point here -- the way that we interpet the input is what matters.)

if ($input.kind = 'class') {
 " $($input.accessibilty) class $($input.name) {"

$input.members | foreach {
 "  public $($_.type) $($_.name);"
}

 " }"
 
}

Which generates this output:

        public class MyClass {
                public System.String S;
        }

This approach seems most effective when you need to express a lot of attributes on a single element. The downside is that the input seems a bit verbose and unnatural in some cases.