implement stub versions of java.security classes

classpath/java/security/Permissions.java

@@ -0,0 +1,41 @@
+/* Copyright (c) 2009, Avian Contributors
+
+   Permission to use, copy, modify, and/or distribute this software
+   for any purpose with or without fee is hereby granted, provided
+   that the above copyright notice and this permission notice appear
+   in all copies.
+
+   There is NO WARRANTY for this software.  See license.txt for
+   details. */
+
+package java.security;
+
+import java.util.Map;
+import java.util.HashMap;
+import java.util.Set;
+import java.util.HashSet;
+
+public class Permissions extends PermissionCollection {
+  private final Map<Class,PermissionCollection> collections = new HashMap();
+
+  public void add(Permission p) {
+    Class c = p.getClass();
+    PermissionCollection pc = collections.get(c);
+    if (pc == null) {
+      pc = p.newPermissionCollection();
+      if (pc == null) {
+        pc = new MyPermissionCollection();
+      }
+      collections.put(c, pc);
+    }
+    pc.add(p);
+  }
+
+  private static class MyPermissionCollection extends PermissionCollection {
+    private final Set<Permission> permissions = new HashSet();
+
+    public void add(Permission p) {
+      permissions.add(p);
+    }
+  }
+}