content: /*
   * Original work Copyright (c) 2005-2008, The Android Open Source Project
   * Modified work Copyright (c) 2013, rovo89 and Tungstwenty
   * Modified work Copyright (c) 2015, Alibaba Mobile Infrastructure (Android) Team
   *
   * Licensed 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 com.taobao.android.dexposed;
  
  import java.lang.reflect.Member;
  
  import com.taobao.android.dexposed.callbacks.IXUnhook;
  import com.taobao.android.dexposed.callbacks.XCallback;
  
  public abstract class XC_MethodHook extends XCallback {
      public XC_MethodHook() {
          super();
      }
  
      public XC_MethodHook(int priority) {
          super(priority);
      }
  
      /**
       * Called before the invocation of the method.
       * <p>Can use {@link MethodHookParam#setResult(Object)} and {@link MethodHookParam#setThrowable(Throwable)}
       * to prevent the original method from being called.
       */
      public abstract MethodHookParam beforeHookedMethod(MethodHookParam param) throws Throwable;
  
      /**
       * Called after the invocation of the method.
       * <p>Can use {@link MethodHookParam#setResult(Object)} and {@link MethodHookParam#setThrowable(Throwable)}
       * to modify the return value of the original method.
       */
      public abstract MethodHookParam afterHookedMethod(MethodHookParam param) throws Throwable;
  
  
      public static class MethodHookParam extends XCallback.Param {
          public XC_MethodHook HookMethod;
  
          public String Model = "NULL";
          /**
           * Description of the hooked method
           */
          public Member method;
          /**
           * The <code>this</code> reference for an instance method, or null for static methods
           */
          public Object thisObject;
          /**
           * Arguments to the method call
           */
          public Object[] args;
          private Object result = new Object();
          private Throwable throwable = null;
          /* package */ boolean returnEarly = false;
  
          /**
           * Returns the result of the method call
           */
          public Object getResult() {
              return result;
          }
  
          public boolean isEquals(XC_MethodHook xc_methodHook) {
              if (HookMethod == xc_methodHook || Model.equals("dalvik")) {
                  return true;
              }
              return false;
          }
  
          /**
           * Modify the result of the method call. In a "before-method-call"
           * hook, prevents the call to the original method.
           * You still need to "return" from the hook handler if required.
           */
          public void setResult(Object result) {
              this.result = result;
              this.throwable = null;
              this.returnEarly = true;
          }
  
          /**
           * Returns the <code>Throwable</code> thrown by the method, or null
           */
          public Throwable getThrowable() {
              return throwable;
          }
  
          /**
           * Returns true if an exception was thrown by the method
           */
          public boolean hasThrowable() {
              return throwable != null;
          }
  
          /**
           * Modify the exception thrown of the method call. In a "before-method-call"
           * hook, prevents the call to the original method.
           * You still need to "return" from the hook handler if required.
           */
          public void setThrowable(Throwable throwable) {
              this.throwable = throwable;
              this.result = null;
              this.returnEarly = true;
          }
  
          /**
           * Returns the result of the method call, or throws the Throwable caused by it
           */
          public Object getResultOrThrowable() throws Throwable {
              if (throwable != null)
                  throw throwable;
              return result;
          }
      }
  
      public class Unhook implements IXUnhook {
          private final Member hookMethod;
  
          public Unhook(Member hookMethod) {
              this.hookMethod = hookMethod;
          }
  
          public Member getHookedMethod() {
              return hookMethod;
          }
  
          public XC_MethodHook getCallback() {
              return XC_MethodHook.this;
          }
  
          @Override
          public void unhook() {
              DexposedBridge.unhookMethod(hookMethod, XC_MethodHook.this);
          }
  
      }
  
      /**
       * Note: This class used for distinguish the Method cann't unhook.
       */
      public abstract class XC_MethodKeepHook extends XC_MethodHook {
  
          public XC_MethodKeepHook() {
              super();
          }
  
          public XC_MethodKeepHook(int priority) {
              super(priority);
          }
  
      }
  
  
  }
  
  
  