feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/com/sun/tools/internal/xjc/util/SubtreeCutter.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.tools.internal.xjc.util;
+
+import org.xml.sax.helpers.XMLFilterImpl;
+import org.xml.sax.helpers.DefaultHandler;
+import org.xml.sax.XMLFilter;
+import org.xml.sax.ContentHandler;
+import org.xml.sax.SAXException;
+import org.xml.sax.Attributes;
+
+/**
+ * {@link XMLFilter} that can cut sub-trees.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+public abstract class SubtreeCutter extends XMLFilterImpl {
+    /**
+     * When we are pruning a sub tree, this field holds the depth of
+     * elements that are being cut. Used to resume event forwarding.
+     *
+     * As long as this value is 0, we will pass through data.
+     */
+    private int cutDepth=0;
+
+
+    /**
+     * This object will receive SAX events while a sub tree is being
+     * pruned.
+     */
+    private static final ContentHandler stub = new DefaultHandler();
+
+    /**
+     * This field remembers the user-specified ContentHandler.
+     * So that we can restore it once the sub tree is completely pruned.
+     */
+    private ContentHandler next;
+
+
+    public void startDocument() throws SAXException {
+        cutDepth=0;
+        super.startDocument();
+    }
+
+    public boolean isCutting() {
+        return cutDepth>0;
+    }
+
+    /**
+     * Starts cutting a sub-tree. Should be called from within the
+     * {@link #startElement(String, String, String, Attributes)} implementation
+     * before the execution is passed to {@link SubtreeCutter#startElement(String, String, String, Attributes)} .
+     * The current element will be cut.
+     */
+    public void startCutting() {
+        super.setContentHandler(stub);
+        cutDepth=1;
+    }
+
+    public void setContentHandler(ContentHandler handler) {
+        next = handler;
+        // changes take effect immediately unless the sub-tree is being pruned
+        if(getContentHandler()!=stub)
+            super.setContentHandler(handler);
+    }
+
+    public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
+        if(cutDepth>0)
+            cutDepth++;
+        super.startElement(uri, localName, qName, atts);
+    }
+
+    public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
+        super.endElement(namespaceURI, localName, qName);
+
+        if( cutDepth!=0 ) {
+            cutDepth--;
+            if( cutDepth == 1 ) {
+                // pruning completed. restore the user handler
+                super.setContentHandler(next);
+                cutDepth=0;
+            }
+        }
+    }
+}