Iterate through JS object passed as parameter to host function into a dictionary

Question

How do can I convert to a dictionary of name & value pairs from a JS object passed into a host C# method ? My problem is how to interpret the 'object's that are received at the exec function. If they were int's I could just use...

foreach (int i in args)...

...but they are...what ?

For example, in a JS file I have

  myApi.exec("doThang", { dog: "Rover", cat: "Purdy", mouse: "Mini", <non-specific list of more...> } );

In C# I have

public void foo()
{
  var engine = new V8ScriptEngine();
  engine.AddHostObject("myApi", a);  // see below

  // load the above JS
  string script = loadScript();

  // execute that script
  engine.Execute(script);

}

public class a 
{
  public void exec(string name, params object[] args){

  // - how to iterate the args and create say a dictionary of key value pairs? 

  }
}

EDIT: Changed the specifics of the question now that I understand the 'params' keyword is not specifically part of ClearScript.

Answer 1

You can use ScriptObject. Script objects can have indexed properties as well as named properties, so you could create two dictionaries:

public void exec(string name, ScriptObject args) {
    var namedProps = new Dictionary<string, object>();
    foreach (var name in args.PropertyNames) {
        namedProps.Add(name, args[name]);
    }
    var indexedProps = new Dictionary<int, object>();
    foreach (var index in args.PropertyIndices) {
        indexedProps.Add(index, args[index]);
    }
    Console.WriteLine(namedProps.Count);
    Console.WriteLine(indexedProps.Count);
}

If you don't expect or care about indexed properties, you can skip indexedProps. Or you could build a single Dictionary<object, object> instance to hold both.