at.$len Maven / Gradle / Ivy

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Basic commands set for the at lang

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package at;

import static java.lang.String.valueOf;
import java.util.Iterator;
import org.bitbucket.gkutiel.at.Cmd;
import org.bitbucket.gkutiel.at.Context;

public class $len extends Cmd {

	private static int len(final Iterator iterator) {
		int len = 0;
		while (iterator.hasNext()) {
			len++;
			iterator.next();
		}
		return len;
	}

	@Override public String eval(final Context ctx) {
		final Context list = ctx.get(args);
		if (list == null) return "0";
		return valueOf(len(list.iterator()));
	}

}