private static void StringFunction(string name, Func <string, W_Type[], W_Type> fn)
{
StringPrototype[name] = new W_Function((thisArg, Arguments) => {
W_String value = thisArg["value"] as W_String;
if (value == null)
{
thisArg.Error("String object does not contain value");
}
return
(fn(value.String, Arguments));
});
}
public static void Main(string[] args)
{
TextReader source = File.OpenText(@"..\..\..\script.willow");
//parses the script and sets up the AST
Parser parser = new Parser(source);
//astNode representing a script
Script script = parser.ParseScript();
//Console.WriteLine(script);
//Function is an AST node that holds aditional information for
//compiling function does scope resolution and a few optomizations
Function function = new Function(script);
function.Process();
//Note the function which is the final post processed AST
//has a toString Method that returns a script that is functionally identical to the input
//Console.WriteLine(function);
//W_Object is simply a dictionary that holds W_Type's
//W_Object implements prototype based inheritance
W_Object contextObject = new W_Object();
//Exporting a function to an object
//most of this function is boilerplate eventualy
//I will write an object to export native C# functions and objects
//into W_Objects using reflection
contextObject["print"] = new W_Function((thisarg, arguments) =>
{
Console.WriteLine(arguments[0].String);
return(W_Type.NULL);
});
contextObject["printf"] = new W_Function((thisarg, arguments) =>
{
string format = arguments[0].String;
Console.WriteLine(format, arguments.Skip(1).Select(x => x.String).ToArray());
return(W_Type.NULL);
});
contextObject["readNumber"] = new W_Function((thisarg, arguments) =>
{
int retval;
return(int.TryParse(Console.ReadLine(), out retval) ? new W_Number((double)retval) : W_Type.NULL);
});
//Finaly the script is compiled into a delgate
W_Script del = Compiler.CompileScript(function);
//And then the script can be executed
del(contextObject);
}
