public object visitGetExpr(Expr.Get expr)
{
object instance = Evaluate(expr.instance);
if (instance is LoxInstance loxInstance)
{
return(loxInstance.Get(expr.name));
}
if (instance is LoxClass loxClass)
{
return(loxClass.FindStaticMethod(expr.name.lexeme));
}
throw new RuntimeError(expr.name, "Only instances have properties.");
}
Expr ParseCall()
{
Expr expr = ParsePrimary();
while (true)
{
if (match(TokenType.LEFT_PAREN))
{
expr = FinishCall(expr);
}
else if (match(TokenType.DOT))
{
Token name = consume(TokenType.IDENTIFIER, "Expect property name after '.'.");
expr = new Expr.Get(expr, name);
}
else
{
break;
}
}
return(expr);
}
public object visitGetExpr(Expr.Get expr)
{
Resolve(expr.instance);
return(null);
}
public string visitGetExpr(Expr.Get expr)
{
return(parenthesize("GET"));
}