1 /* 2 * Copyright (C) 2017 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 com.android.dx.cf.attrib; 17 18 import com.android.dx.cf.code.BootstrapMethodsList; 19 20 /** 21 * Attribute class for standard {@code AttBootstrapMethods} attributes. 22 */ 23 public class AttBootstrapMethods extends BaseAttribute { 24 /** {@code non-null;} attribute name for attributes of this type */ 25 public static final String ATTRIBUTE_NAME = "BootstrapMethods"; 26 27 private static final int ATTRIBUTE_HEADER_BYTES = 8; 28 private static final int BOOTSTRAP_METHOD_BYTES = 4; 29 private static final int BOOTSTRAP_ARGUMENT_BYTES = 2; 30 31 private final BootstrapMethodsList bootstrapMethods; 32 33 private final int byteLength; 34 AttBootstrapMethods(BootstrapMethodsList bootstrapMethods)35 public AttBootstrapMethods(BootstrapMethodsList bootstrapMethods) { 36 super(ATTRIBUTE_NAME); 37 this.bootstrapMethods = bootstrapMethods; 38 39 int bytes = ATTRIBUTE_HEADER_BYTES + bootstrapMethods.size() * BOOTSTRAP_METHOD_BYTES; 40 for (int i = 0; i < bootstrapMethods.size(); ++i) { 41 int numberOfArguments = bootstrapMethods.get(i).getBootstrapMethodArguments().size(); 42 bytes += numberOfArguments * BOOTSTRAP_ARGUMENT_BYTES; 43 } 44 this.byteLength = bytes; 45 } 46 47 @Override byteLength()48 public int byteLength() { 49 return byteLength; 50 } 51 52 /** 53 * Get the bootstrap methods present in attribute. 54 * @return bootstrap methods list 55 */ getBootstrapMethods()56 public BootstrapMethodsList getBootstrapMethods() { 57 return bootstrapMethods; 58 } 59 } 60