Re: [Vala] Iterating over enums

[Andrea Del Signore <sejerpz tin it>]

On Fri, 2011-09-30 at 11:45 +0200, tomw wrote:
> Hi, 
>
> I'm trying to get enum values based upon a match to their string
> representation. To do that, I would need to iterate over the enums. I
> was wondering whether there is a simple way of doing it without creating
> an array first?
>
> Thanks, 
>  
 

Hi,

you can try with this:

public enum TestEnum
{
        ZERO,
        ONE,
        TWO,
        THREE,
        FOUR
}


public static void main ()
{
        EnumClass klass = (EnumClass) typeof(TestEnum).class_ref ();
        
        for (int i = 0; i < klass.n_values; i++)
        {
                var enum_value =  klass.get_value (i);
                if (enum_value == null) {
                        print ("No value for: %d\n", i);
                } else {
                        print("Enum (%d): %s [%s] = %d\n", i, enum_value.value_name,
enum_value.value_nick, enum_value.value);
                }
        }
        
        string[] words = new string[] {
                "zero", "one", "two", "<no enum for me>"
        };
        
        foreach (string word in words) {
                var enum_value = klass.get_value_by_nick (word);
                if (enum_value == null) {
                        print ("No value for: %s\n", word);
                } else {
                        print("Enum (%s): %s [%s] = %d\n", word, enum_value.value_name,
enum_value.value_nick, enum_value.value);
                }

        }
}

Best regards,
Andrea