mcimadamore@1072: /*
mcimadamore@1072:  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
mcimadamore@1072:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
mcimadamore@1072:  *
mcimadamore@1072:  * This code is free software; you can redistribute it and/or modify it
mcimadamore@1072:  * under the terms of the GNU General Public License version 2 only, as
mcimadamore@1072:  * published by the Free Software Foundation.
mcimadamore@1072:  *
mcimadamore@1072:  * This code is distributed in the hope that it will be useful, but WITHOUT
mcimadamore@1072:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
mcimadamore@1072:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
mcimadamore@1072:  * version 2 for more details (a copy is included in the LICENSE file that
mcimadamore@1072:  * accompanied this code).
mcimadamore@1072:  *
mcimadamore@1072:  * You should have received a copy of the GNU General Public License version
mcimadamore@1072:  * 2 along with this work; if not, write to the Free Software Foundation,
mcimadamore@1072:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
mcimadamore@1072:  *
mcimadamore@1072:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
mcimadamore@1072:  * or visit www.oracle.com if you need additional information or have any
mcimadamore@1072:  * questions.
mcimadamore@1072:  */
mcimadamore@1072: 
mcimadamore@1072: /*
mcimadamore@1072:  * @test
mcimadamore@1072:  * @bug 7079713
mcimadamore@1072:  * @summary javac hangs when compiling a class that references a cyclically inherited class
mcimadamore@1072:  * @run main TestCircularClassfile
mcimadamore@1072:  */
mcimadamore@1072: 
mcimadamore@1072: import java.io.*;
mcimadamore@1072: import java.net.URI;
mcimadamore@1072: import java.util.Arrays;
mcimadamore@1072: import javax.tools.JavaCompiler;
mcimadamore@1072: import javax.tools.JavaFileObject;
mcimadamore@1072: import javax.tools.SimpleJavaFileObject;
mcimadamore@1072: import javax.tools.StandardJavaFileManager;
mcimadamore@1072: import javax.tools.StandardLocation;
mcimadamore@1072: import javax.tools.ToolProvider;
mcimadamore@1072: 
mcimadamore@1072: import com.sun.source.util.JavacTask;
mcimadamore@1072: 
mcimadamore@1072: public class TestCircularClassfile {
mcimadamore@1072: 
mcimadamore@1072:     enum SourceKind {
mcimadamore@1072:         A_EXTENDS_B("class B {} class A extends B { void m() {} }"),
mcimadamore@1072:         B_EXTENDS_A("class A { void m() {} } class B extends A {}");
mcimadamore@1072: 
mcimadamore@1072:         String sourceStr;
mcimadamore@1072: 
mcimadamore@1072:         private SourceKind(String sourceStr) {
mcimadamore@1072:             this.sourceStr = sourceStr;
mcimadamore@1072:         }
mcimadamore@1072: 
mcimadamore@1072:         SimpleJavaFileObject getSource() {
mcimadamore@1072:             return new SimpleJavaFileObject(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE) {
mcimadamore@1072:                 @Override
mcimadamore@1072:                 public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
mcimadamore@1072:                     return sourceStr;
mcimadamore@1072:                 }
mcimadamore@1072:             };
mcimadamore@1072:         }
mcimadamore@1072:     }
mcimadamore@1072: 
mcimadamore@1072:     enum TestKind {
mcimadamore@1072:         REPLACE_A("A.class"),
mcimadamore@1072:         REPLACE_B("B.class");
mcimadamore@1072: 
mcimadamore@1072:         String targetClass;
mcimadamore@1072: 
mcimadamore@1072:         private TestKind(String targetClass) {
mcimadamore@1072:             this.targetClass = targetClass;
mcimadamore@1072:         }
mcimadamore@1072:     }
mcimadamore@1072: 
mcimadamore@1072:     enum ClientKind {
mcimadamore@1072:         METHOD_CALL1("A a = null; a.m();"),
mcimadamore@1072:         METHOD_CALL2("B b = null; b.m();"),
mcimadamore@1072:         CONSTR_CALL1("new A();"),
mcimadamore@1072:         CONSTR_CALL2("new B();"),
mcimadamore@1072:         ASSIGN1("A a = null; B b = a;"),
mcimadamore@1072:         ASSIGN2("B b = null; A a = b;");
mcimadamore@1072: 
mcimadamore@1072:         String mainMethod;
mcimadamore@1072: 
mcimadamore@1072:         private ClientKind(String mainMethod) {
mcimadamore@1072:             this.mainMethod = mainMethod;
mcimadamore@1072:         }
mcimadamore@1072: 
mcimadamore@1072:         SimpleJavaFileObject getSource() {
mcimadamore@1072:             return new SimpleJavaFileObject(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE) {
mcimadamore@1072:                 @Override
mcimadamore@1072:                 public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
mcimadamore@1072:                     return "class Test { public static void main(String[] args) { #M } }"
mcimadamore@1072:                             .replace("#M", mainMethod);
mcimadamore@1072:                 }
mcimadamore@1072:             };
mcimadamore@1072:         }
mcimadamore@1072:     }
mcimadamore@1072: 
mcimadamore@1072:     public static void main(String... args) throws Exception {
mcimadamore@1072:         JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
mcimadamore@1072:         StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
mcimadamore@1072:         int count = 0;
mcimadamore@1072:         for (SourceKind sk1 : SourceKind.values()) {
mcimadamore@1072:             for (SourceKind sk2 : SourceKind.values()) {
mcimadamore@1072:                 for (TestKind tk : TestKind.values()) {
mcimadamore@1072:                     for (ClientKind ck : ClientKind.values()) {
mcimadamore@1072:                         new TestCircularClassfile("sub_"+count++, sk1, sk2, tk, ck).check(comp, fm);
mcimadamore@1072:                     }
mcimadamore@1072:                 }
mcimadamore@1072:             }
mcimadamore@1072:         }
mcimadamore@1072:     }
mcimadamore@1072: 
mcimadamore@1072:     static String workDir = System.getProperty("user.dir");
mcimadamore@1072: 
mcimadamore@1072:     String destPath;
mcimadamore@1072:     SourceKind sk1;
mcimadamore@1072:     SourceKind sk2;
mcimadamore@1072:     TestKind tk;
mcimadamore@1072:     ClientKind ck;
mcimadamore@1072: 
mcimadamore@1072:     TestCircularClassfile(String destPath, SourceKind sk1, SourceKind sk2, TestKind tk, ClientKind ck) {
mcimadamore@1072:         this.destPath = destPath;
mcimadamore@1072:         this.sk1 = sk1;
mcimadamore@1072:         this.sk2 = sk2;
mcimadamore@1072:         this.tk = tk;
mcimadamore@1072:         this.ck = ck;
mcimadamore@1072:     }
mcimadamore@1072: 
mcimadamore@1072:     void check(JavaCompiler comp, StandardJavaFileManager fm) throws Exception {
mcimadamore@1072:         //step 1: compile first source code in the test subfolder
mcimadamore@1072:         File destDir = new File(workDir, destPath); destDir.mkdir();
mcimadamore@1072:         //output dir must be set explicitly as we are sharing the fm (see bug 7026941)
mcimadamore@1072:         fm.setLocation(javax.tools.StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir));
mcimadamore@1072:         JavacTask ct = (JavacTask)comp.getTask(null, fm, null,
mcimadamore@1072:                 null, null, Arrays.asList(sk1.getSource()));
mcimadamore@1072:         ct.generate();
mcimadamore@1072: 
mcimadamore@1072:         //step 2: compile second source code in a temp folder
mcimadamore@1072:         File tmpDir = new File(destDir, "tmp"); tmpDir.mkdir();
mcimadamore@1072:         //output dir must be set explicitly as we are sharing the fm (see bug 7026941)
mcimadamore@1072:         fm.setLocation(javax.tools.StandardLocation.CLASS_OUTPUT, Arrays.asList(tmpDir));
mcimadamore@1072:         ct = (JavacTask)comp.getTask(null, fm, null,
mcimadamore@1072:                 null, null, Arrays.asList(sk2.getSource()));
mcimadamore@1072:         ct.generate();
mcimadamore@1072: 
mcimadamore@1072:         //step 3: move a classfile from the temp folder to the test subfolder
mcimadamore@1072:         File fileToMove = new File(tmpDir, tk.targetClass);
mcimadamore@1072:         File target = new File(destDir, tk.targetClass);
jjh@1075:         target.delete();
mcimadamore@1072:         boolean success = fileToMove.renameTo(target);
mcimadamore@1072: 
mcimadamore@1072:         if (!success) {
mcimadamore@1072:             throw new AssertionError("error when moving file " + tk.targetClass);
mcimadamore@1072:         }
mcimadamore@1072: 
mcimadamore@1072:         //step 4: compile the client class against the classes in the test subfolder
mcimadamore@1072:         //input/output dir must be set explicitly as we are sharing the fm (see bug 7026941)
mcimadamore@1072:         fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir));
mcimadamore@1072:         fm.setLocation(StandardLocation.CLASS_PATH, Arrays.asList(destDir));
mcimadamore@1072:         ct = (JavacTask)comp.getTask(null, fm, null,
mcimadamore@1072:                 null, null, Arrays.asList(ck.getSource()));
mcimadamore@1072: 
mcimadamore@1072:         ct.generate();
mcimadamore@1072:     }
mcimadamore@1072: }