gestalt ';' NAME ( ';' NAME (';' ANY )? )?

/**
 * Add a gestalt to all workspaces. The gestalt is a set of parts describing
 * the environment. Each part has a name and optionally attributes. This
 * method adds a gestalt to the VM. Per workspace it is possible to augment
 * this.
 */

public static void addGestalt(String part, Attrs attrs) {
	Attrs already = overallGestalt.get(part);
	if (attrs == null)
		attrs = new Attrs();

	if (already != null) {
		already.putAll(attrs);
	} else
		already = attrs;

	overallGestalt.put(part, already);
}

/**
 * Get the attrs for a gestalt part
 */
public Attrs getGestalt(String part) {
	if (gestalt == null) {
		gestalt = new Parameters(getProperty(Constants.GESTALT));
		gestalt.mergeWith(overallGestalt, false);
	}
	return gestalt.get(part);
}

/**
 * The macro to access the gestalt
 * <p>
 * {@code $ gestalt;part[;key[;value]]}}
 */

public String _gestalt(String args[]) {
	if (args.length >= 2) {
		Attrs attrs = getGestalt(args[1]);
		if (attrs == null)
			return "";

		if (args.length == 2)
			return args[1];

		String s = attrs.get(args[2]);
		if (args.length == 3) {
			if (s == null)
				s = "";
			return s;
		}

		if (args.length == 4) {
			if (args[3].equals(s))
				return s;
			else
				return "";
		}
	}
	throw new IllegalArgumentException("${gestalt;<part>[;key[;<value>]]} has too many arguments");
}