import org.netbeans.spi.editor.bracesmatching.BracesMatcherFactory; //导入依赖的package包/类
private static Collection<? extends BracesMatcherFactory> findFactories(final Document document,
            final int offset, final boolean backward
    ) {
        final MimePath[] mimePath = { null };
        document.render(new Runnable() {
            public void run() {
                TokenHierarchy<? extends Document> th = TokenHierarchy.get(document);
                if (th.isActive()) {
                    List<TokenSequence<?>> sequences = th.embeddedTokenSequences(offset, backward);
                    if (!sequences.isEmpty()) {
                        String path = sequences.get(sequences.size() - 1).languagePath().mimePath();
                        mimePath[0] = MimePath.parse(path);
                    }
                } else {
                    String mimeType = (String) document.getProperty("mimeType"); //NOI18N
                    mimePath[0] = mimeType != null ? MimePath.parse(mimeType) : MimePath.EMPTY;
                }
            }
        });
        Collection<? extends BracesMatcherFactory> factories = mimePath[0] == null ?
            Collections.<BracesMatcherFactory>emptyList() :
            MimeLookup.getLookup(mimePath[0]).lookupAll(BracesMatcherFactory.class);
        
//        System.out.println("@@@ '" + (mimePath == null ? "null" : mimePath.getPath()) + "', offset = " + offset + ", backward = " + backward + " -> {");
//        for(BracesMatcherFactory f : factories) {
//            System.out.println("@@@    " + f);
//        }
//        System.out.println("@@@ } --------------");
        
        return factories;
    }
 

import org.netbeans.spi.editor.bracesmatching.BracesMatcherFactory; //导入依赖的package包/类
private static BracesMatcherFactory defaultMatcherFactory() {
    return new BracesMatcherFactory() {
        public BracesMatcher createMatcher(MatcherContext context) {
            return defaultMatcher(context, -1, -1);
        }
    };
}