| /* |
| * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 7192246 |
| * @summary check that code attributed for default methods is correctly generated |
| * @modules jdk.jdeps/com.sun.tools.classfile |
| */ |
| |
| import com.sun.tools.classfile.AccessFlags; |
| import com.sun.tools.classfile.Attribute; |
| import com.sun.tools.classfile.ClassFile; |
| import com.sun.tools.classfile.ConstantPool.*; |
| import com.sun.tools.classfile.Code_attribute; |
| import com.sun.tools.classfile.Instruction; |
| import com.sun.tools.classfile.Method; |
| |
| import com.sun.tools.classfile.Opcode; |
| import java.io.*; |
| |
| public class TestDefaultBody { |
| |
| interface TestInterface { |
| int no_default(int i); |
| default int yes_default(int i) { return impl(this, i); } |
| } |
| |
| static int impl(TestInterface ti, int i) { return 0; } |
| |
| static final String TARGET_CLASS_NAME = "TestDefaultBody"; |
| static final String TARGET_NAME = "impl"; |
| static final String TARGET_TYPE = "(LTestDefaultBody$TestInterface;I)I"; |
| static final String SUBTEST_NAME = TestInterface.class.getName() + ".class"; |
| static final String TEST_METHOD_NAME = "yes_default"; |
| |
| public static void main(String... args) throws Exception { |
| new TestDefaultBody().run(); |
| } |
| |
| public void run() throws Exception { |
| String workDir = System.getProperty("test.classes"); |
| File compiledTest = new File(workDir, SUBTEST_NAME); |
| verifyDefaultBody(compiledTest); |
| } |
| |
| void verifyDefaultBody(File f) { |
| System.err.println("verify: " + f); |
| try { |
| ClassFile cf = ClassFile.read(f); |
| Method testMethod = null; |
| Code_attribute codeAttr = null; |
| for (Method m : cf.methods) { |
| codeAttr = (Code_attribute)m.attributes.get(Attribute.Code); |
| String mname = m.getName(cf.constant_pool); |
| if (mname.equals(TEST_METHOD_NAME)) { |
| testMethod = m; |
| break; |
| } else { |
| codeAttr = null; |
| } |
| } |
| if (testMethod == null) { |
| throw new Error("Test method not found"); |
| } |
| if (testMethod.access_flags.is(AccessFlags.ACC_ABSTRACT)) { |
| throw new Error("Test method is abstract"); |
| } |
| if (codeAttr == null) { |
| throw new Error("Code attribute in test method not found"); |
| } |
| |
| boolean found = false; |
| for (Instruction instr : codeAttr.getInstructions()) { |
| if (instr.getOpcode() == Opcode.INVOKESTATIC) { |
| found = true; |
| int pc_index = instr.getShort(1); |
| CONSTANT_Methodref_info mref = (CONSTANT_Methodref_info)cf.constant_pool.get(pc_index); |
| String className = mref.getClassName(); |
| String targetName = mref.getNameAndTypeInfo().getName(); |
| String targetType = mref.getNameAndTypeInfo().getType(); |
| |
| if (!className.equals(TARGET_CLASS_NAME)) { |
| throw new Error("unexpected class in default method body " + className); |
| } |
| if (!targetName.equals(TARGET_NAME)) { |
| throw new Error("unexpected method name in default method body " + targetName); |
| } |
| if (!targetType.equals(TARGET_TYPE)) { |
| throw new Error("unexpected method type in default method body " + targetType); |
| } |
| break; |
| } |
| } |
| |
| if (!found) { |
| throw new Error("no invokestatic found in default method body"); |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| throw new Error("error reading " + f +": " + e); |
| } |
| } |
| } |