content: /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * 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.android.tools.layoutlib.create;
  
  
  /**
   * Interface to allow a method invocation to be listened upon.
   * <p/>
   * This is used by {@link OverrideMethod} to register a listener for methods that
   * have been stubbed by the {@link AsmGenerator}. At runtime the stub will call either a
   * default global listener or a specific listener based on the method signature.
   */
  public interface MethodListener {
      /**
       * A stub method is being invoked.
       * <p/>
       * Known limitation: caller arguments are not available.
       *  
       * @param signature The signature of the method being invoked, composed of the
       *                  binary class name followed by the method descriptor (aka argument
       *                  types). Example: "com/foo/MyClass/InnerClass/printInt(I)V".
       * @param isNative True if the method was a native method.
       * @param caller The calling object. Null for static methods, "this" for instance methods.
       */
      void onInvokeV(String signature, boolean isNative, Object caller);
  
      /**
       * Same as {@link #onInvokeV(String, boolean, Object)} but returns an integer or similar.
       * @see #onInvokeV(String, boolean, Object)
       * @return an integer, or a boolean, or a short or a byte.
       */
      int onInvokeI(String signature, boolean isNative, Object caller);
  
      /**
       * Same as {@link #onInvokeV(String, boolean, Object)} but returns a long.
       * @see #onInvokeV(String, boolean, Object)
       * @return a long.
       */
      long onInvokeL(String signature, boolean isNative, Object caller);
  
      /**
       * Same as {@link #onInvokeV(String, boolean, Object)} but returns a float.
       * @see #onInvokeV(String, boolean, Object)
       * @return a float.
       */
      float onInvokeF(String signature, boolean isNative, Object caller);
  
      /**
       * Same as {@link #onInvokeV(String, boolean, Object)} but returns a double.
       * @see #onInvokeV(String, boolean, Object)
       * @return a double.
       */
      double onInvokeD(String signature, boolean isNative, Object caller);
  
      /**
       * Same as {@link #onInvokeV(String, boolean, Object)} but returns an object.
       * @see #onInvokeV(String, boolean, Object)
       * @return an object.
       */
      Object onInvokeA(String signature, boolean isNative, Object caller);
  }
  