ElementSet.java revision 325
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0N/A */
1879N/A
1879N/Apackage com.sun.tools.internal.xjc.reader.gbind;
1879N/A
1879N/Aimport java.util.Collections;
1879N/Aimport java.util.Iterator;
2062N/A
1879N/A/**
1879N/A * A set over a list of {@link Element}.
1879N/A *
1879N/A * @author Kohsuke Kawaguchi
1879N/A */
1879N/Ainterface ElementSet extends Iterable<Element> {
1879N/A /**
1879N/A * For each element in this set, adds an edge to the given element.
1879N/A */
1879N/A void addNext(Element element);
1879N/A
1879N/A public static final ElementSet EMPTY_SET = new ElementSet() {
1879N/A public void addNext(Element element) {
1879N/A // noop
1879N/A }
1879N/A
1879N/A public boolean contains(ElementSet element) {
2073N/A return this==element;
2073N/A }
2073N/A
2073N/A public Iterator<Element> iterator() {
2073N/A return Collections.<Element>emptySet().iterator();
2073N/A }
0N/A };
0N/A
0N/A /**
0N/A * Doesn't have to be strict (it's OK for this method to return false
0N/A * when it's actually true) since this is used just for optimization.
0N/A *
0N/A * (Erring on the other side is NG)
0N/A */
0N/A boolean contains(ElementSet rhs);
0N/A}
0N/A