aoqi@0: /*
aoqi@0:  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 8031967
aoqi@0:  * @summary Ensure javac can handle very deeply nested chain of method invocations occurring as
aoqi@0:  *          a parameter to other method invocations.
aoqi@0:  * @run main T8031967
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.IOException;
aoqi@0: import java.net.URI;
aoqi@0: import java.util.Arrays;
aoqi@0: import java.util.List;
aoqi@0: 
aoqi@0: import javax.tools.DiagnosticListener;
aoqi@0: import javax.tools.JavaCompiler;
aoqi@0: import javax.tools.JavaFileObject;
aoqi@0: import javax.tools.SimpleJavaFileObject;
aoqi@0: import javax.tools.ToolProvider;
aoqi@0: 
aoqi@0: import com.sun.source.util.JavacTask;
aoqi@0: 
aoqi@0: public class T8031967 {
aoqi@0: 
aoqi@0:     public static void main(String... args) throws IOException {
aoqi@0:         new T8031967().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     final int depth = 50;
aoqi@0: 
aoqi@0:     private void run() throws IOException {
aoqi@0:         runTestCase(true);
aoqi@0:         runTestCase(false);
aoqi@0:     }
aoqi@0: 
aoqi@0:     private void runTestCase(boolean withErrors) throws IOException {
aoqi@0:         StringBuilder code = new StringBuilder();
aoqi@0: 
aoqi@0:         code.append("public class Test {\n" +
aoqi@0:                     "    private void test() {\n" +
aoqi@0:                     "        GroupLayout l = new GroupLayout();\n" +
aoqi@0:                     "        l.setHorizontalGroup(\n");
aoqi@0: 
aoqi@0:         gen(code, depth);
aoqi@0:         code.append("        );\n" +
aoqi@0:                     "    }\n");
aoqi@0:         if (!withErrors) {
aoqi@0:             code.append("    class GroupLayout {\n" +
aoqi@0:                         "        ParallelGroup createParallelGroup() {return null;}\n" +
aoqi@0:                         "        ParallelGroup createParallelGroup(int i) {return null;}\n" +
aoqi@0:                         "        ParallelGroup createParallelGroup(int i, int j) {return null;}\n" +
aoqi@0:                         "        void setHorizontalGroup(Group g) { }\n" +
aoqi@0:                         "    }\n" +
aoqi@0:                         "    \n" +
aoqi@0:                         "    class Group {\n" +
aoqi@0:                         "        Group addGroup(Group g) { return this; }\n" +
aoqi@0:                         "        Group addGroup(int i, Group g) { return this; }\n" +
aoqi@0:                         "        Group addGap(int i) { return this; }\n" +
aoqi@0:                         "        Group addGap(long l) { return this; }\n" +
aoqi@0:                         "        Group addGap(int i, int j) { return this; }\n" +
aoqi@0:                         "        Group addComponent(Object c) { return this; }\n" +
aoqi@0:                         "        Group addComponent(int i, Object c) { return this; }\n" +
aoqi@0:                         "    }\n" +
aoqi@0:                         "    class ParallelGroup extends Group {\n" +
aoqi@0:                         "        Group addGroup(Group g) { return this; }\n" +
aoqi@0:                         "        Group addGroup(int i, Group g) { return this; }\n" +
aoqi@0:                         "        Group addGap(int i) { return this; }\n" +
aoqi@0:                         "        Group addGap(int i, int j) { return this; }\n" +
aoqi@0:                         "        Group addComponent(Object c) { return this; }\n" +
aoqi@0:                         "        Group addComponent(int i, Object c) { return this; }\n" +
aoqi@0:                         "    }\n");
aoqi@0:         }
aoqi@0: 
aoqi@0:         code.append("}\n");
aoqi@0: 
aoqi@0:         JavaSource source = new JavaSource(code.toString());
aoqi@0:         List<JavaSource> sourceList = Arrays.asList(source);
aoqi@0:         JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
aoqi@0:         DiagnosticListener<JavaFileObject> noErrors = (diagnostic) -> {
aoqi@0:             throw new IllegalStateException("Should not produce errors: " + diagnostic);
aoqi@0:         };
aoqi@0:         JavacTask task = (JavacTask) compiler.getTask(null, null, withErrors ? null : noErrors,
aoqi@0:                 null, null, sourceList);
aoqi@0: 
aoqi@0:         task.analyze();
aoqi@0:     }
aoqi@0: 
aoqi@0:     private void gen(StringBuilder code, int depth) {
aoqi@0:         code.append("l.createParallelGroup()\n");
aoqi@0:         if (depth > 0) {
aoqi@0:             code.append(".addGroup(\n");
aoqi@0:             gen(code, depth - 1);
aoqi@0:             code.append(")");
aoqi@0:         }
aoqi@0: 
aoqi@0:         code.append(".addGap(1)\n" +
aoqi@0:                     ".addComponent(new Object())\n" +
aoqi@0:                     ".addGap(1)\n" +
aoqi@0:                     ".addComponent(new Object())");
aoqi@0:     }
aoqi@0: 
aoqi@0:     class JavaSource extends SimpleJavaFileObject {
aoqi@0: 
aoqi@0:         final String code;
aoqi@0:         public JavaSource(String code) {
aoqi@0:             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
aoqi@0:             this.code = code;
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0:             return code;
aoqi@0:         }
aoqi@0:     }
aoqi@0: }