| /* |
| * Copyright 2000-2007 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package sun.nio.ch; |
| |
| import java.io.*; |
| import java.lang.reflect.*; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| |
| class Reflect { // package-private |
| |
| private Reflect() { } |
| |
| private static class ReflectionError extends Error { |
| private static final long serialVersionUID = -8659519328078164097L; |
| ReflectionError(Throwable x) { |
| super(x); |
| } |
| } |
| |
| private static void setAccessible(final AccessibleObject ao) { |
| AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| ao.setAccessible(true); |
| return null; |
| }}); |
| } |
| |
| static Constructor lookupConstructor(String className, |
| Class[] paramTypes) |
| { |
| try { |
| Class cl = Class.forName(className); |
| Constructor c = cl.getDeclaredConstructor(paramTypes); |
| setAccessible(c); |
| return c; |
| } catch (ClassNotFoundException x) { |
| throw new ReflectionError(x); |
| } catch (NoSuchMethodException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static Object invoke(Constructor c, Object[] args) { |
| try { |
| return c.newInstance(args); |
| } catch (InstantiationException x) { |
| throw new ReflectionError(x); |
| } catch (IllegalAccessException x) { |
| throw new ReflectionError(x); |
| } catch (InvocationTargetException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static Method lookupMethod(String className, |
| String methodName, |
| Class[] paramTypes) |
| { |
| try { |
| Class cl = Class.forName(className); |
| Method m = cl.getDeclaredMethod(methodName, paramTypes); |
| setAccessible(m); |
| return m; |
| } catch (ClassNotFoundException x) { |
| throw new ReflectionError(x); |
| } catch (NoSuchMethodException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static Object invoke(Method m, Object ob, Object[] args) { |
| try { |
| return m.invoke(ob, args); |
| } catch (IllegalAccessException x) { |
| throw new ReflectionError(x); |
| } catch (InvocationTargetException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static Object invokeIO(Method m, Object ob, Object[] args) |
| throws IOException |
| { |
| try { |
| return m.invoke(ob, args); |
| } catch (IllegalAccessException x) { |
| throw new ReflectionError(x); |
| } catch (InvocationTargetException x) { |
| if (IOException.class.isInstance(x.getCause())) |
| throw (IOException)x.getCause(); |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static Field lookupField(String className, String fieldName) { |
| try { |
| Class cl = Class.forName(className); |
| Field f = cl.getDeclaredField(fieldName); |
| setAccessible(f); |
| return f; |
| } catch (ClassNotFoundException x) { |
| throw new ReflectionError(x); |
| } catch (NoSuchFieldException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static Object get(Object ob, Field f) { |
| try { |
| return f.get(ob); |
| } catch (IllegalAccessException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static Object get(Field f) { |
| return get(null, f); |
| } |
| |
| static void set(Object ob, Field f, Object val) { |
| try { |
| f.set(ob, val); |
| } catch (IllegalAccessException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static void setInt(Object ob, Field f, int val) { |
| try { |
| f.setInt(ob, val); |
| } catch (IllegalAccessException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| static void setBoolean(Object ob, Field f, boolean val) { |
| try { |
| f.setBoolean(ob, val); |
| } catch (IllegalAccessException x) { |
| throw new ReflectionError(x); |
| } |
| } |
| |
| } |