[stringtemplate-interest] handling of arrays (John Snyders)

[Terence Parr]

Awesome!  Heh, it's exactly what we want I think.

Wait, class cast issue:

	public static Object convertArrayToList(Object value) {
		if ( value==null ) {
			return null;
		}
		if ( value.getClass().isArray() ) {
			return Arrays.asList((Object[])value);  // CAST ISSUE!
		}
		return value;
	}

won't work as value is not Object[] most of the time...but how do you  
get it to compile w/o the cast?

Ter

On Jan 30, 2007, at 9:13 AM, Harry Karadimas wrote:

> Hi, I don't know if that relates to the previous post, but java  
> *does* have something
> to encapsulate an array into a list, and that is the "asList"  
> method of the java.util.Arrays
> class.
>
> Object[] myArray = ...
> List myList = Arrays.asList(myArray);
>
> Harry Karadimas  
> ______________________________________________________________________ 
>  Dr Harry Karadimas Medecin Ingenieur resp. Recherche et  
> Developpement Departement d'Information Hospitalier CHU Henri  
> Mondor 51, av. du Mal de Lattre de Tassigny 94010 CRETEIL tel : (00  
> 33 1) 49 81 21 79 fax : (00 33 1) 49 81 27 08 secr.: (00 33 1) 49  
> 81 23 82 m.el.:harry.karadimas at hmn.ap-hop-paris.fr
>
>
> stringtemplate-interest-request at antlr.org a écrit :
>> Send stringtemplate-interest mailing list submissions to  
>> stringtemplate-interest at antlr.org To subscribe or unsubscribe via  
>> the World Wide Web, visit http://www.antlr.org:8080/mailman/ 
>> listinfo/stringtemplate-interest or, via email, send a message  
>> with subject or body 'help' to stringtemplate-interest- 
>> request at antlr.org You can reach the person managing the list at  
>> stringtemplate-interest-owner at antlr.org When replying, please edit  
>> your Subject line so it is more specific than "Re: Contents of  
>> stringtemplate-interest digest..." Today's Topics: 1. Re: handling  
>> of arrays (John Snyders) 2. Re: inconsistency with length function  
>> (Oliver Flege)  
>> --------------------------------------------------------------------- 
>> - Message: 1 Date: Sun, 28 Jan 2007 21:44:26 -0500 From: "John  
>> Snyders" <jjsnyders at rcn.com> Subject: Re: [stringtemplate- 
>> interest] handling of arrays To: "Terence Parr"  
>> <parrt at cs.usfca.edu>,	"StringTemplate" <stringtemplate- 
>> interest at antlr.org> Message-ID:  
>> <PMEOJKDLMMHOHNEAMPBGGEJMCAAA.jjsnyders at rcn.com> Content-Type:  
>> text/plain;	charset="US-ASCII"
>>> -----Original Message----- From: stringtemplate-interest- 
>>> bounces at antlr.org [mailto:stringtemplate-interest- 
>>> bounces at antlr.org]On Behalf Of Terence Parr Sent: Saturday,  
>>> January 27, 2007 6:38 PM To: StringTemplate Subject: Re:  
>>> [stringtemplate-interest] handling of arrays On Jan 16, 2007, at  
>>> 9:40 PM, John Snyders wrote:
>>>> I noticed in ASTExpr.java the method convertArrayToList.
>>> it is. just done to make things consistent...else have to check  
>>> for arrays everyone. gross, eh?
>>>> It seems to me that this is wasteful. I have not looked at it  
>>>> too deep but why not handle arrays like other collections and  
>>>> wrap them in an ArrayIterator inside  
>>>> convertAnythingIteratableToIterator.
>>> Interesting...ArrayIterator, eh? Does Sun have a standard one? I  
>>> don't see it. Do you mean I should create one real quick?
>> There isn't one in the Java SDK (as far as I know) but jakarta  
>> commons has one http://jakarta.apache.org/commons/collections/api- 
>> release/org/apache/commons /collections/iterators/ 
>> ArrayIterator.html ST probably shouldn't rely on this so you can  
>> create your own. It is straight forward. I created one before I  
>> found the one in commons collections. I can give it to you if you  
>> like (assuming I can find it). But again I didn't think this  
>> through fully.
>>> Ter _______________________________________________  
>>> stringtemplate-interest mailing list stringtemplate- 
>>> interest at antlr.org http://www.antlr.org:8080/mailman/listinfo/ 
>>> stringtemplate-interest
>> ------------------------------ Message: 2 Date: Mon, 29 Jan 2007  
>> 10:25:24 +0100 From: Oliver Flege <o.flege at market-maker.de>  
>> Subject: Re: [stringtemplate-interest] inconsistency with length  
>> function To: StringTemplate <stringtemplate-interest at antlr.org>  
>> Message-ID: <45BDBD84.4040707 at market-maker.de> Content-Type: text/ 
>> plain; charset=ISO-8859-1 Hi, Terence Parr wrote:
>>>> I think that the length method in ASTExpr.java should be changed  
>>>> as follows: From: } else if (attribute instanceof List) { i =  
>>>> ((List)attribute).size(); } To: } else if (attribute instanceof  
>>>> Collection) { i = ((List)attribute).size(); }
>>> Howdy! OK, yep, good fix.
>> even better would be } else if (attribute instanceof Collection)  
>> { i = ((Collection)attribute).size(); } :) Cheers, Oliver  
>> ------------------------------  
>> _______________________________________________ stringtemplate- 
>> interest mailing list stringtemplate-interest at antlr.org http:// 
>> www.antlr.org:8080/mailman/listinfo/stringtemplate-interest End of  
>> stringtemplate-interest Digest, Vol 22, Issue 14  
>> *******************************************************
> <harry.karadimas.vcf>
> _______________________________________________
> stringtemplate-interest mailing list
> stringtemplate-interest at antlr.org
> http://www.antlr.org:8080/mailman/listinfo/stringtemplate-interest