1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package android.hardware.camera2.dispatch; 17 18 import android.hardware.camera2.utils.UncheckedThrow; 19 import android.util.Log; 20 21 import java.lang.reflect.InvocationTargetException; 22 import java.lang.reflect.Method; 23 24 import static com.android.internal.util.Preconditions.*; 25 26 27 public class InvokeDispatcher<T> implements Dispatchable<T> { 28 29 private static final String TAG = "InvocationSink"; 30 private final T mTarget; 31 InvokeDispatcher(T target)32 public InvokeDispatcher(T target) { 33 mTarget = checkNotNull(target, "target must not be null"); 34 } 35 36 @Override dispatch(Method method, Object[] args)37 public Object dispatch(Method method, Object[] args) { 38 try { 39 return method.invoke(mTarget, args); 40 } catch (InvocationTargetException e) { 41 Throwable t = e.getTargetException(); 42 // Potential UB. Hopefully 't' is a runtime exception. 43 UncheckedThrow.throwAnyException(t); 44 } catch (IllegalAccessException e) { 45 // Impossible 46 Log.wtf(TAG, "IllegalAccessException while invoking " + method, e); 47 } catch (IllegalArgumentException e) { 48 // Impossible 49 Log.wtf(TAG, "IllegalArgumentException while invoking " + method, e); 50 } 51 52 // unreachable 53 return null; 54 } 55 } 56