// Bind this function to an object instance
public PlutoFunction bind(PlutoObject obj)
{
// Inside of the function
Scope bind_scope = new Scope(this.scope);
// Define "this" as the object we are binding to
bind_scope.define("this", obj);
return(new PlutoFunction(this.function, bind_scope, this.is_constructor));
}
// Create an instance of the class here
public object call(Interpreter interpreter, List <object> args)
{
PlutoObject obj = new PlutoObject(this);
// Check if the class has a constructor
if (this.methods.ContainsKey(this.name))
{
// Bind the function to this instance and call the constructor
this.methods[this.name].bind(obj).call(interpreter, args);
}
return(obj);
}
public object visit_super(SuperExpr super_expr)
{
// Get the superclass and the 'this' object
PlutoClass superclass = (PlutoClass)local_scope.get(new Token(Token.Type.Super, "super"));
PlutoObject obj = (PlutoObject)local_scope.get(new Token(Token.Type.This, "this"));
// Get the method from the superclass
PlutoFunction method = superclass.find_method(obj, (string)super_expr.identifier.value);
if (method == null)
{
throw new RuntimeException("Undefined method of superclass '" + super_expr.identifier.value + "'");
}
return(method);
}
public PlutoFunction find_method(PlutoObject obj, string identifier)
{
// Find method in this class
if (this.methods.ContainsKey(identifier))
{
return(methods[identifier].bind(obj));
}
// Find method in superclass
if (superclass != null)
{
return(superclass.find_method(obj, identifier));
}
return(null);
}
public void visit_interrupt(InterruptStmt interrupt_stmt)
{
PlutoObject exception_obj = (PlutoObject)evaluate(interrupt_stmt.expression);
PlutoClass exception = (PlutoClass)namespaces["exception"].get(new Token(Token.Type.Identifier, "Exception"));
// First check if it extends 'Exception'
PlutoClass super = exception_obj.the_class.superclass;
while (super != exception && super != null)
{
super = super.superclass;
}
if (super != exception)
{
throw new RuntimeException("Class must be an Exception to be able to interrupt");
}
throw new InterruptException(exception_obj, (string)exception_obj.get(new Token(Token.Type.Identifier, "message")));
}
public InterruptException(PlutoObject obj, string error_msg)
{
this.obj = obj;
this.error_msg = error_msg;
}
