public object visitTernaryExpr(Expr.Ternary expr)
{
resolve(expr.Cond);
resolve(expr.IfTrue);
resolve(expr.IfFalse);
return(null);
}
public object visitTernaryExpr(Expr.Ternary expr)
{
bool cond = isTruthy(evaluate(expr.Cond));
if (cond)
{
return(evaluate(expr.IfTrue));
}
else
{
return(evaluate(expr.IfFalse));
}
}
private Expr ternary()
{
// expression → equality ( "?" equality ":" equality )?;
Expr expr = equality();
if (match(TokenType.QUEST))
{
Expr ifTrue = expression();
consume(TokenType.COLON, "Expected : after ? expresion");
Expr ifFalse = expression();
expr = new Expr.Ternary(expr, ifTrue, ifFalse);
}
return(expr);
}
public string visitTernaryExpr(Expr.Ternary expr)
{
return(parenthesize("ternary", expr.Cond, expr.IfTrue, expr.IfFalse));
}
