content: /*
   * Copyright (C) 2011 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.taobao.atlas.dexmerge.dx.io.instructions;
  
  /**
   * Cursor over code units, for reading or writing out Dalvik bytecode.
   */
  public interface CodeCursor {
      /**
       * Gets the cursor. The cursor is the offset in code units from
       * the start of the input of the next code unit to be read or
       * written, where the input generally consists of the code for a
       * single method.
       */
      public int cursor();
  
      /**
       * Gets the base address associated with the current cursor. This
       * differs from the cursor value when explicitly set (by {@link
       * #setBaseAddress). This is used, in particular, to convey base
       * addresses to switch data payload instructions, whose relative
       * addresses are relative to the address of a dependant switch
       * instruction.
       */
      public int baseAddressForCursor();
  
      /**
       * Sets the base address for the given target address to be as indicated.
       *
       * @see #baseAddressForCursor
       */
      public void setBaseAddress(int targetAddress, int baseAddress);
  }
  