public int Arity()
{
LoxFunction initilizer = FindMethod("init");
if (initilizer == null)
{
return(0);
}
return(initilizer.Arity());
}
public object Call(Interpreter interpreter, List <object> arguments)
{
LoxInstance instance = new LoxInstance(this);
LoxFunction initilizer = FindMethod("init");
if (initilizer != null)
{
initilizer.Bind(instance).Call(interpreter, arguments);
}
return(instance);
}
internal object Get(Token name)
{
if (fields.ContainsKey(name.lexeme))
{
return(fields[name.lexeme]);
}
LoxFunction method = klass.FindMethod(name.lexeme);
if (method != null)
{
return(method.Bind(this));
}
throw new RuntimeError(name, "Undefined property '" + name.lexeme + "'.");
}
public object VisitClassStmt(Class stmt)
{
environment.Define(stmt.name.lexeme, null);
Dictionary <string, LoxFunction> methods = new Dictionary <string, LoxFunction>();
foreach (Function method in stmt.methods)
{
LoxFunction function = new LoxFunction(method, environment, method.name.lexeme.Equals("init"));
methods.Add(method.name.lexeme, function);
}
LoxClass klass = new LoxClass(stmt.name.lexeme, methods);
environment.Assign(stmt.name, klass);
return(null);
}