1 /* 2 * Copyright (C) 2011 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 17 package com.android.dx.io.instructions; 18 19 /** 20 * Cursor over code units, for reading or writing out Dalvik bytecode. 21 */ 22 public interface CodeCursor { 23 /** 24 * Gets the cursor. The cursor is the offset in code units from 25 * the start of the input of the next code unit to be read or 26 * written, where the input generally consists of the code for a 27 * single method. 28 */ 29 public int cursor(); 30 31 /** 32 * Gets the base address associated with the current cursor. This 33 * differs from the cursor value when explicitly set (by {@link 34 * #setBaseAddress}). This is used, in particular, to convey base 35 * addresses to switch data payload instructions, whose relative 36 * addresses are relative to the address of a dependant switch 37 * instruction. 38 */ 39 public int baseAddressForCursor(); 40 41 /** 42 * Sets the base address for the given target address to be as indicated. 43 * 44 * @see #baseAddressForCursor 45 */ 46 public void setBaseAddress(int targetAddress, int baseAddress); 47 } 48
