public object visitSuperExpr(Expr.Super super)
{
int distance = -1;
locals.TryGetValue(super, out distance);
List <LoxClass> superClasses = (List <LoxClass>)environment.getAt(distance, "super");
LoxInstance _object = (LoxInstance)environment.getAt(distance - 1, "this");
LoxFunction method = null;
LoxClass foundInClass = null;
foreach (LoxClass superClass in superClasses)
{
LoxFunction methodFind = superClass.findMethod(super.method.lexeme);
if (methodFind != null)
{
if (method != null)
{
throw new Exceptions.RuntimeError(super.method, "Error: Found '" + super.method.lexeme + "' in " + foundInClass.name + " and " + superClass.name + ".");
}
method = methodFind;
foundInClass = superClass;
}
}
if (method == null)
{
throw new Exceptions.RuntimeError(super.method, "Undefined property '" + super.method.lexeme + "'.");
}
return(method.bind(_object));
}
public object VisitSuperExpr(Expr.Super expr)
{
if (currentClass != ClassType.SUBCLASS)
{
Lox.Error(expr.keyword, "Cannot use 'super' outside of a class that has a superclass.");
}
ResolveLocal(expr, expr.keyword);
return(null);
}
public object VisitSuperExpr(Expr.Super expr)
{
int distance = locals[expr];
// Find reference to the superclass and current instance ("this").
IClass superclass = (IClass)environment.GetAt(distance, "super");
LoxInstance thisInstance = (LoxInstance)environment.GetAt(distance, "this");
// Find method from superclass.
LoxFunction method = superclass.FindMethod(thisInstance, expr.method.lexeme);
return(method);
}
public object visitSuperExpr(Expr.Super super)
{
if (currentClass == ClassType.NONE)
{
Lox.error(super.keyword, "Can't use 'super' outside of a class.");
}
else if (currentClass != ClassType.SUBCLASS)
{
Lox.error(super.keyword, "Can't use 'super' in a class with no superclass.");
}
resolveLocal(super, super.keyword);
return(null);
}
public Void VisitSuperExpr(Expr.Super expr)
{
if (_currentClass == ClassType.NONE)
{
Lox.Error(expr.Keyword, "Can't use 'super' outside of a class");
}
else if (_currentClass != ClassType.SUBCLASS)
{
Lox.Error(expr.Keyword, "Can't use 'super' in a class with no superclass.");
}
ResolveLocal(expr, expr.Keyword);
return(null);
}
public object VisitSuperExpr(Expr.Super expr)
{
var distance = _locals[expr];
var superclass = _environment.GetAt(distance, "super") as LoxClass;
var obj = _environment.GetAt(distance - 1, "this") as LoxInstance;
var method = superclass.FindMethod(expr.Method.Lexeme);
if (method == null)
{
throw new RuntimeError(expr.Method, $"Undefined property '{expr.Method.Lexeme}'.");
}
return(method.Bind(obj));
}
public object Visit(Expr.Super _super)
{
if (_currentClass == ClassType.NONE)
{
Lox.Error(_super.keyword, "Cannot use 'super' outside of a class.");
}
else if (_currentClass != ClassType.SUBCLASS)
{
Lox.Error(_super.keyword, "Cannot use 'super' in a class with no superclass.");
}
ResolveLocal(_super, _super.keyword);
return(null);
}
object Expr.IVisitor <object> .Visit(Expr.Super _super)
{
int distance = _locals[_super];
LoxClass superclass = (LoxClass)_environment.GetAt(distance, "super");
// "this" is always one level nearer than "super"'s environment.
LoxInstance _object = (LoxInstance)_environment.GetAt(distance - 1, "this");
LoxFunction method = superclass.FindMethod(_super.method.lexeme);
if (method == null)
{
throw new RuntimeError(_super.method, "Undefined property '" + _super.method.lexeme + "'.");
}
return(method.Bind(_object));
}
string Expr.IVisitor <string> .Visit(Expr.Super _super)
{
throw new NotImplementedException();
}
public string visitSuperExpr(Expr.Super super)
{
return("(super)");
}
public string VisitSuperExpr(Expr.Super expr)
{
throw new NotImplementedException();
}