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test/tools/javac/defaultMethods/TestDefaultBody.java@959103a6100f (annotated)

test/tools/javac/defaultMethods/TestDefaultBody.java

Wed, 27 Apr 2016 01:34:52 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:34:52 +0800

changeset 0

959103a6100f

child 2525

2eb010b6cb22

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 7192246
aoqi@0	27	* @summary check that code attributed for default methods is correctly generated
aoqi@0	28	*/
aoqi@0	29
aoqi@0	30	import com.sun.tools.classfile.AccessFlags;
aoqi@0	31	import com.sun.tools.classfile.Attribute;
aoqi@0	32	import com.sun.tools.classfile.ClassFile;
aoqi@0	33	import com.sun.tools.classfile.ConstantPool.*;
aoqi@0	34	import com.sun.tools.classfile.Code_attribute;
aoqi@0	35	import com.sun.tools.classfile.Instruction;
aoqi@0	36	import com.sun.tools.classfile.Method;
aoqi@0	37
aoqi@0	38	import com.sun.tools.classfile.Opcode;
aoqi@0	39	import java.io.*;
aoqi@0	40
aoqi@0	41	public class TestDefaultBody {
aoqi@0	42
aoqi@0	43	interface TestInterface {
aoqi@0	44	int no_default(int i);
aoqi@0	45	default int yes_default(int i) { return impl(this, i); }
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	static int impl(TestInterface ti, int i) { return 0; }
aoqi@0	49
aoqi@0	50	static final String TARGET_CLASS_NAME = "TestDefaultBody";
aoqi@0	51	static final String TARGET_NAME = "impl";
aoqi@0	52	static final String TARGET_TYPE = "(LTestDefaultBody$TestInterface;I)I";
aoqi@0	53	static final String SUBTEST_NAME = TestInterface.class.getName() + ".class";
aoqi@0	54	static final String TEST_METHOD_NAME = "yes_default";
aoqi@0	55
aoqi@0	56	public static void main(String... args) throws Exception {
aoqi@0	57	new TestDefaultBody().run();
aoqi@0	58	}
aoqi@0	59
aoqi@0	60	public void run() throws Exception {
aoqi@0	61	String workDir = System.getProperty("test.classes");
aoqi@0	62	File compiledTest = new File(workDir, SUBTEST_NAME);
aoqi@0	63	verifyDefaultBody(compiledTest);
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	void verifyDefaultBody(File f) {
aoqi@0	67	System.err.println("verify: " + f);
aoqi@0	68	try {
aoqi@0	69	ClassFile cf = ClassFile.read(f);
aoqi@0	70	Method testMethod = null;
aoqi@0	71	Code_attribute codeAttr = null;
aoqi@0	72	for (Method m : cf.methods) {
aoqi@0	73	codeAttr = (Code_attribute)m.attributes.get(Attribute.Code);
aoqi@0	74	String mname = m.getName(cf.constant_pool);
aoqi@0	75	if (mname.equals(TEST_METHOD_NAME)) {
aoqi@0	76	testMethod = m;
aoqi@0	77	break;
aoqi@0	78	} else {
aoqi@0	79	codeAttr = null;
aoqi@0	80	}
aoqi@0	81	}
aoqi@0	82	if (testMethod == null) {
aoqi@0	83	throw new Error("Test method not found");
aoqi@0	84	}
aoqi@0	85	if (testMethod.access_flags.is(AccessFlags.ACC_ABSTRACT)) {
aoqi@0	86	throw new Error("Test method is abstract");
aoqi@0	87	}
aoqi@0	88	if (codeAttr == null) {
aoqi@0	89	throw new Error("Code attribute in test method not found");
aoqi@0	90	}
aoqi@0	91
aoqi@0	92	boolean found = false;
aoqi@0	93	for (Instruction instr : codeAttr.getInstructions()) {
aoqi@0	94	if (instr.getOpcode() == Opcode.INVOKESTATIC) {
aoqi@0	95	found = true;
aoqi@0	96	int pc_index = instr.getShort(1);
aoqi@0	97	CONSTANT_Methodref_info mref = (CONSTANT_Methodref_info)cf.constant_pool.get(pc_index);
aoqi@0	98	String className = mref.getClassName();
aoqi@0	99	String targetName = mref.getNameAndTypeInfo().getName();
aoqi@0	100	String targetType = mref.getNameAndTypeInfo().getType();
aoqi@0	101
aoqi@0	102	if (!className.equals(TARGET_CLASS_NAME)) {
aoqi@0	103	throw new Error("unexpected class in default method body " + className);
aoqi@0	104	}
aoqi@0	105	if (!targetName.equals(TARGET_NAME)) {
aoqi@0	106	throw new Error("unexpected method name in default method body " + targetName);
aoqi@0	107	}
aoqi@0	108	if (!targetType.equals(TARGET_TYPE)) {
aoqi@0	109	throw new Error("unexpected method type in default method body " + targetType);
aoqi@0	110	}
aoqi@0	111	break;
aoqi@0	112	}
aoqi@0	113	}
aoqi@0	114
aoqi@0	115	if (!found) {
aoqi@0	116	throw new Error("no invokestatic found in default method body");
aoqi@0	117	}
aoqi@0	118	} catch (Exception e) {
aoqi@0	119	e.printStackTrace();
aoqi@0	120	throw new Error("error reading " + f +": " + e);
aoqi@0	121	}
aoqi@0	122	}
aoqi@0	123	}