public BasilFunction FindMethod(BasilInstance instance, string name) { if (methods.ContainsKey(name)) { return(methods[name].Bind(instance)); } if (superclass != null) { return(superclass.FindMethod(instance, name)); } return(null); }
public object VisitSuperExpr(Expr.Super expr) { int distance = locals[expr]; BasilClass superclass = (BasilClass)environment.GetAt(distance, "super"); // "this" is always one level nearer than "super"'s environment. BasilInstance objekt = (BasilInstance)environment.GetAt(distance - 1, "this"); BasilFunction method = superclass.FindMethod(objekt, expr.Method.lexeme); if (method == null) { throw new RuntimeError(expr.Method, $"Undefined property '{expr.Method.lexeme}'."); } return(method); }
public object Get(Token name) { if (fields.ContainsKey(name.lexeme)) { return(fields[name.lexeme]); } BasilFunction method = klass.FindMethod(this, name.lexeme); if (method != null) { return(method); } throw new RuntimeError(name, $"Undefined property '{name.lexeme}'."); }