1 files changed, 156 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Restrict.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Restrict.java
new file mode 100644
index 00000000..2ea1a861
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Restrict.java
@@ -0,0 +1,156 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+package org.apache.tools.ant.types.resources;
+
+import java.util.Iterator;
+import java.util.Stack;
+
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.types.Resource;
+import org.apache.tools.ant.types.ResourceCollection;
+import org.apache.tools.ant.types.resources.selectors.ResourceSelector;
+import org.apache.tools.ant.types.resources.selectors.ResourceSelectorContainer;
+
+/**
+ * ResourceCollection that allows a number of selectors to be
+ * applied to a single ResourceCollection for the purposes of
+ * restricting or narrowing results.
+ * @since Ant 1.7
+ */
+public class Restrict
+    extends ResourceSelectorContainer implements ResourceCollection {
+
+    private LazyResourceCollectionWrapper w = new  LazyResourceCollectionWrapper() {
+        /**
+         * Restrict the nested ResourceCollection based on the nested selectors.
+         */
+        protected boolean filterResource(Resource r) {
+            for (Iterator<ResourceSelector> i = getSelectors(); i.hasNext();) {
+                if (!i.next().isSelected(r)) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    };
+
+    /**
+     * Add the ResourceCollection.
+     * @param c the ResourceCollection to add.
+     */
+    public synchronized void add(ResourceCollection c) {
+        if (isReference()) {
+            throw noChildrenAllowed();
+        }
+        if (c == null) {
+            return;
+        }
+        w.add(c);
+        setChecked(false);
+    }
+
+    /**
+     * Set whether to cache collections.
+     * @param b boolean cache flag.
+     */
+    public synchronized void setCache(boolean b) {
+        w.setCache(b);
+    }
+
+    /**
+     * Learn whether to cache collections. Default is <code>true</code>.
+     * @return boolean cache flag.
+     */
+    public synchronized boolean isCache() {
+        return w.isCache();
+    }
+
+    /**
+     * Add a ResourceSelector.
+     * @param s the ResourceSelector to add.
+     */
+    public synchronized void add(ResourceSelector s) {
+        if (s == null) {
+            return;
+        }
+        super.add(s);
+        FailFast.invalidate(this);
+    }
+
+    /**
+     * Fulfill the ResourceCollection contract.
+     * @return an Iterator of Resources.
+     */
+    public final synchronized Iterator<Resource> iterator() {
+        if (isReference()) {
+            return ((Restrict) getCheckedRef()).iterator();
+        }
+        dieOnCircularReference();
+        return w.iterator();
+    }
+
+    /**
+     * Fulfill the ResourceCollection contract.
+     * @return number of elements as int.
+     */
+    public synchronized int size() {
+        if (isReference()) {
+            return ((Restrict) getCheckedRef()).size();
+        }
+        dieOnCircularReference();
+        return w.size();
+    }
+
+    /**
+     * Fulfill the ResourceCollection contract.
+     * @return whether this is a filesystem-only resource collection.
+     */
+    public synchronized boolean isFilesystemOnly() {
+        if (isReference()) {
+            return ((Restrict) getCheckedRef()).isFilesystemOnly();
+        }
+        dieOnCircularReference();
+        return w.isFilesystemOnly();
+    }
+
+    /**
+     * Format this Restrict collection as a String.
+     * @return the String value of this collection.
+     */
+    public synchronized String toString() {
+        if (isReference()) {
+            return getCheckedRef().toString();
+        }
+        dieOnCircularReference();
+        return w.toString();
+    }
+
+    protected synchronized void dieOnCircularReference(Stack<Object> stk, Project p) {
+        if (isChecked()) {
+            return;
+        }
+
+        // takes care of Selectors
+        super.dieOnCircularReference(stk, p);
+
+        if (!isReference()) {
+            pushAndInvokeCircularReferenceCheck(w, stk, p);
+            setChecked(true);
+        }
+    }
+}