1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.bcel.generic;
18
19 import static org.junit.jupiter.api.Assertions.fail;
20 import static org.junit.jupiter.api.Assumptions.assumeFalse;
21
22 import org.apache.bcel.classfile.Code;
23 import org.apache.bcel.classfile.JavaClass;
24 import org.apache.bcel.classfile.Method;
25 import org.apache.bcel.util.SyntheticRepository;
26 import org.apache.commons.lang3.JavaVersion;
27 import org.apache.commons.lang3.SystemUtils;
28 import org.junit.jupiter.params.ParameterizedTest;
29 import org.junit.jupiter.params.provider.ValueSource;
30
31 final class EmptyVisitorTestCase {
32
33 /*
34 * https://docs.oracle.com/javase/specs/jvms/se17/html/jvms-6.html#jvms-6.2
35 */
36 private static final String RESERVED_OPCODE = "Reserved opcode";
37
38 @ParameterizedTest
39 @ValueSource(strings = {
40 // @formatter:off
41 "java.math.BigInteger", // contains instructions [AALOAD, AASTORE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH,
42 // ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CHECKCAST, D2I, DADD, DALOAD, DASTORE, DCONST
43 // DDIV, DMUL, DRETURN, DSUB, DUP, DUP2, DUP_X2, FCONST, FRETURN, GETFIELD, GETSTATIC, GOTO, I2B,
44 // I2D, I2L, IADD, IALOAD, IAND, IASTORE, ICONST, IDIV, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE,
45 // IFNONNULL, IFNULL, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE,
46 // IINC, ILOAD, IMUL, INEG, INSTANCEOF, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM,
47 // IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP,
48 // LCONST, LDC, LDC2_W, LDC_W, LDIV, LLOAD, LMUL, LNEG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR,
49 // LSTORE, LSUB, LUSHR, NEW, NEWARRAY, POP, PUTFIELD, PUTSTATIC, RETURN, SIPUSH]
50 "java.math.BigDecimal", // contains instructions [CASTORE, D2L, DLOAD, FALOAD, FASTORE, FDIV, FMUL, I2S, IF_ACMPEQ, LXOR,
51 // MONITORENTER, MONITOREXIT, TABLESWITCH]
52 "java.awt.Color", // contains instructions [D2F, DCMPG, DCMPL, F2D, F2I, FADD, FCMPG, FCMPL, FLOAD, FSTORE, FSUB, I2F,
53 // INVOKEDYNAMIC]
54 "java.util.Map", // contains instruction INVOKEINTERFACE
55 "java.io.Bits", // contains instruction I2C
56 "java.io.BufferedInputStream", // contains instruction DUP_X1
57 "java.io.StreamTokenizer", // contains instruction DNEG, DSTORE
58 "java.lang.Float", // contains instruction F2L
59 "java.lang.invoke.LambdaForm", // contains instruction MULTIANEWARRAY,
60 "java.nio.Bits", // contains instruction POP2,
61 "java.nio.HeapShortBuffer", // contains instruction SALOAD, SASTORE
62 "Java8Example2", // contains instruction FREM
63 "java.awt.GradientPaintContext", // contains instruction DREM
64 "java.util.concurrent.atomic.DoubleAccumulator", // contains instruction DUP2_X1
65 "java.util.Hashtable", // contains instruction FNEG
66 "javax.swing.text.html.CSS", // contains instruction DUP2_X2
67 "org.apache.bcel.generic.LargeJump", // contains instruction GOTO_W
68 "org.apache.commons.lang.SerializationUtils" // contains instruction JSR
69 // @formatter:on
70 })
71 public void test(final String className) throws ClassNotFoundException {
72 // "java.io.Bits" is not in Java 21.
73 assumeFalse(SystemUtils.isJavaVersionAtLeast(JavaVersion.JAVA_21) && className.equals("java.io.Bits"));
74 final JavaClass javaClass = SyntheticRepository.getInstance().loadClass(className);
75 for (final Method method : javaClass.getMethods()) {
76 final Code code = method.getCode();
77 if (code != null) {
78 final InstructionList instructionList = new InstructionList(code.getCode());
79 for (final InstructionHandle instructionHandle : instructionList) {
80 instructionHandle.accept(new EmptyVisitor() {
81 @Override
82 public void visitBREAKPOINT(final BREAKPOINT obj) {
83 fail(RESERVED_OPCODE);
84 }
85
86 @Override
87 public void visitIMPDEP1(final IMPDEP1 obj) {
88 fail(RESERVED_OPCODE);
89 }
90
91 @Override
92 public void visitIMPDEP2(final IMPDEP2 obj) {
93 fail(RESERVED_OPCODE);
94 }
95 });
96 }
97 }
98 }
99 }
100 }