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.code; 17 18 import com.android.dx.rop.cst.Constant; 19 import com.android.dx.rop.cst.CstDouble; 20 import com.android.dx.rop.cst.CstFloat; 21 import com.android.dx.rop.cst.CstInteger; 22 import com.android.dx.rop.cst.CstLong; 23 import com.android.dx.rop.cst.CstMethodHandle; 24 import com.android.dx.rop.cst.CstProtoRef; 25 import com.android.dx.rop.cst.CstString; 26 import com.android.dx.rop.cst.CstType; 27 import com.android.dx.util.FixedSizeList; 28 29 /** 30 * List of bootstrap method arguments, which are part of the contents of 31 * {@code BootstrapMethods} attributes. 32 */ 33 public class BootstrapMethodArgumentsList extends FixedSizeList { 34 /** 35 * Constructs an instance. 36 * 37 * @param count the number of elements to be in the list 38 */ 39 public BootstrapMethodArgumentsList(int count) { 40 super(count); 41 } 42 43 /** 44 * Gets the bootstrap argument from the indicated position. 45 * 46 * @param n position of argument to get 47 * @return {@code Constant} instance 48 */ 49 public Constant get(int n) { 50 return (Constant) get0(n); 51 } 52 53 /** 54 * Sets the bootstrap argument at the indicated position. 55 * 56 * @param n position of argument to set 57 * @param cst {@code Constant} instance 58 */ 59 public void set(int n, Constant cst) { 60 // The set of permitted types is defined by the JVMS 8, section 4.7.23. 61 if (cst instanceof CstString || 62 cst instanceof CstType || 63 cst instanceof CstInteger || 64 cst instanceof CstLong || 65 cst instanceof CstFloat || 66 cst instanceof CstDouble || 67 cst instanceof CstMethodHandle || 68 cst instanceof CstProtoRef) { 69 set0(n, cst); 70 } else { 71 Class<?> klass = cst.getClass(); 72 throw new IllegalArgumentException("bad type for bootstrap argument: " + klass); 73 } 74 } 75 } 76
