jdk8-mips64-public/langtools: test/tools/javac/defaultMethods/TestDefaultBody.java@7909abb85562

     1 /*

     2  * Copyright (c) 2011, 2013, 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  */

    24 /*

    25  * @test

    26  * @bug 7192246

    27  * @summary  check that code attributed for default methods is correctly generated

    28  */

    30 import com.sun.tools.classfile.AccessFlags;

    31 import com.sun.tools.classfile.Attribute;

    32 import com.sun.tools.classfile.ClassFile;

    33 import com.sun.tools.classfile.ConstantPool.*;

    34 import com.sun.tools.classfile.Code_attribute;

    35 import com.sun.tools.classfile.Instruction;

    36 import com.sun.tools.classfile.Method;

    38 import com.sun.tools.classfile.Opcode;

    39 import java.io.*;

    41 public class TestDefaultBody {

    43     interface TestInterface {

    44         int no_default(int i);

    45         default int yes_default(int i) { return impl(this, i); }

    46     }

    48     static int impl(TestInterface ti, int i) { return 0; }

    50     static final String TARGET_CLASS_NAME = "TestDefaultBody";

    51     static final String TARGET_NAME = "impl";

    52     static final String TARGET_TYPE = "(LTestDefaultBody$TestInterface;I)I";

    53     static final String SUBTEST_NAME = TestInterface.class.getName() + ".class";

    54     static final String TEST_METHOD_NAME = "yes_default";

    56     public static void main(String... args) throws Exception {

    57         new TestDefaultBody().run();

    58     }

    60     public void run() throws Exception {

    61         String workDir = System.getProperty("test.classes");

    62         File compiledTest = new File(workDir, SUBTEST_NAME);

    63         verifyDefaultBody(compiledTest);

    64     }

    66     void verifyDefaultBody(File f) {

    67         System.err.println("verify: " + f);

    68         try {

    69             ClassFile cf = ClassFile.read(f);

    70             Method testMethod = null;

    71             Code_attribute codeAttr = null;

    72             for (Method m : cf.methods) {

    73                 codeAttr = (Code_attribute)m.attributes.get(Attribute.Code);

    74                 String mname = m.getName(cf.constant_pool);

    75                 if (mname.equals(TEST_METHOD_NAME)) {

    76                     testMethod = m;

    77                     break;

    78                 } else {

    79                     codeAttr = null;

    80                 }

    81             }

    82             if (testMethod == null) {

    83                 throw new Error("Test method not found");

    84             }

    85             if (testMethod.access_flags.is(AccessFlags.ACC_ABSTRACT)) {

    86                 throw new Error("Test method is abstract");

    87             }

    88             if (codeAttr == null) {

    89                 throw new Error("Code attribute in test method not found");

    90             }

    92             boolean found = false;

    93             for (Instruction instr : codeAttr.getInstructions()) {

    94                 if (instr.getOpcode() == Opcode.INVOKESTATIC) {

    95                     found = true;

    96                     int pc_index = instr.getShort(1);

    97                     CONSTANT_Methodref_info mref = (CONSTANT_Methodref_info)cf.constant_pool.get(pc_index);

    98                     String className = mref.getClassName();

    99                     String targetName = mref.getNameAndTypeInfo().getName();

   100                     String targetType = mref.getNameAndTypeInfo().getType();

   102                     if (!className.equals(TARGET_CLASS_NAME)) {

   103                         throw new Error("unexpected class in default method body " + className);

   104                     }

   105                     if (!targetName.equals(TARGET_NAME)) {

   106                         throw new Error("unexpected method name in default method body " + targetName);

   107                     }

   108                     if (!targetType.equals(TARGET_TYPE)) {

   109                         throw new Error("unexpected method type in default method body " + targetType);

   110                     }

   111                     break;

   112                 }

   113             }

   115             if (!found) {

   116                 throw new Error("no invokestatic found in default method body");

   117             }

   118         } catch (Exception e) {

   119             e.printStackTrace();

   120             throw new Error("error reading " + f +": " + e);

   121         }

   122     }

   123 }

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