1 /* 2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.interpreter; 26 27 import sun.jvm.hotspot.oops.*; 28 import sun.jvm.hotspot.utilities.*; 29 30 public class BytecodeNewArray extends Bytecode { BytecodeNewArray(Method method, int bci)31 BytecodeNewArray(Method method, int bci) { 32 super(method, bci); 33 } 34 getType()35 public int getType() { 36 return (int) javaByteAt(1); 37 } 38 verify()39 public void verify() { 40 if (Assert.ASSERTS_ENABLED) { 41 Assert.that(isValid(), "check newarray"); 42 } 43 } 44 isValid()45 public boolean isValid() { 46 boolean result = javaCode() == Bytecodes._newarray; 47 if (result == false) return false; 48 switch (getType()) { 49 case TypeArrayKlass.T_BOOLEAN: 50 case TypeArrayKlass.T_CHAR: 51 case TypeArrayKlass.T_FLOAT: 52 case TypeArrayKlass.T_DOUBLE: 53 case TypeArrayKlass.T_BYTE: 54 case TypeArrayKlass.T_SHORT: 55 case TypeArrayKlass.T_INT: 56 case TypeArrayKlass.T_LONG: 57 break; 58 default: 59 return false; 60 } 61 62 return true; 63 } 64 getTypeName()65 public String getTypeName() { 66 String result; 67 switch (getType()) { 68 case TypeArrayKlass.T_BOOLEAN: 69 result = "boolean"; 70 break; 71 72 case TypeArrayKlass.T_CHAR: 73 result = "char"; 74 break; 75 76 case TypeArrayKlass.T_FLOAT: 77 result = "float"; 78 break; 79 80 case TypeArrayKlass.T_DOUBLE: 81 result = "double"; 82 break; 83 84 case TypeArrayKlass.T_BYTE: 85 result = "byte"; 86 break; 87 88 case TypeArrayKlass.T_SHORT: 89 result = "short"; 90 break; 91 92 case TypeArrayKlass.T_INT: 93 result = "int"; 94 break; 95 96 case TypeArrayKlass.T_LONG: 97 result = "long"; 98 break; 99 100 default: // should not happen 101 result = "<invalid>"; 102 break; 103 } 104 105 return result; 106 } 107 at(Method method, int bci)108 public static BytecodeNewArray at(Method method, int bci) { 109 BytecodeNewArray b = new BytecodeNewArray(method, bci); 110 if (Assert.ASSERTS_ENABLED) { 111 b.verify(); 112 } 113 return b; 114 } 115 116 /** Like at, but returns null if the BCI is not at newarray */ atCheck(Method method, int bci)117 public static BytecodeNewArray atCheck(Method method, int bci) { 118 BytecodeNewArray b = new BytecodeNewArray(method, bci); 119 return (b.isValid() ? b : null); 120 } 121 at(BytecodeStream bcs)122 public static BytecodeNewArray at(BytecodeStream bcs) { 123 return new BytecodeNewArray(bcs.method(), bcs.bci()); 124 } 125 toString()126 public String toString() { 127 StringBuffer buf = new StringBuffer(); 128 buf.append("newarray"); 129 buf.append(spaces); 130 buf.append(getTypeName()); 131 return buf.toString(); 132 } 133 } 134