/*

 * Copyright (c) 2014, 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 8031967

 * @summary Ensure javac can handle very deeply nested chain of method invocations occurring as

 *          a parameter to other method invocations.

 * @run main T8031967

 */

import java.io.IOException;

import java.net.URI;

import java.util.Arrays;

import java.util.List;

import javax.tools.DiagnosticListener;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import javax.tools.ToolProvider;

import com.sun.source.util.JavacTask;

public class T8031967 {

    public static void main(String... args) throws IOException {

        new T8031967().run();

    }

    final int depth = 50;

    private void run() throws IOException {

        runTestCase(true);

        runTestCase(false);

    }

    private void runTestCase(boolean withErrors) throws IOException {

        StringBuilder code = new StringBuilder();

        code.append("public class Test {\n" +

                    "    private void test() {\n" +

                    "        GroupLayout l = new GroupLayout();\n" +

                    "        l.setHorizontalGroup(\n");

        gen(code, depth);

        code.append("        );\n" +

                    "    }\n");

        if (!withErrors) {

            code.append("    class GroupLayout {\n" +

                        "        ParallelGroup createParallelGroup() {return null;}\n" +

                        "        ParallelGroup createParallelGroup(int i) {return null;}\n" +

                        "        ParallelGroup createParallelGroup(int i, int j) {return null;}\n" +

                        "        void setHorizontalGroup(Group g) { }\n" +

                        "    }\n" +

                        "    \n" +

                        "    class Group {\n" +

                        "        Group addGroup(Group g) { return this; }\n" +

                        "        Group addGroup(int i, Group g) { return this; }\n" +

                        "        Group addGap(int i) { return this; }\n" +

                        "        Group addGap(long l) { return this; }\n" +

                        "        Group addGap(int i, int j) { return this; }\n" +

                        "        Group addComponent(Object c) { return this; }\n" +

                        "        Group addComponent(int i, Object c) { return this; }\n" +

                        "    }\n" +

                        "    class ParallelGroup extends Group {\n" +

                        "        Group addGroup(Group g) { return this; }\n" +

                        "        Group addGroup(int i, Group g) { return this; }\n" +

                        "        Group addGap(int i) { return this; }\n" +

                        "        Group addGap(int i, int j) { return this; }\n" +

                        "        Group addComponent(Object c) { return this; }\n" +

                        "        Group addComponent(int i, Object c) { return this; }\n" +

                        "    }\n");

        }

        code.append("}\n");

        JavaSource source = new JavaSource(code.toString());

        List<JavaSource> sourceList = Arrays.asList(source);

        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();

        DiagnosticListener<JavaFileObject> noErrors = (diagnostic) -> {

            throw new IllegalStateException("Should not produce errors: " + diagnostic);

        };

        JavacTask task = (JavacTask) compiler.getTask(null, null, withErrors ? null : noErrors,

                null, null, sourceList);

        task.analyze();

    }

    private void gen(StringBuilder code, int depth) {

        code.append("l.createParallelGroup()\n");

        if (depth > 0) {

            code.append(".addGroup(\n");

            gen(code, depth - 1);

            code.append(")");

        }

        code.append(".addGap(1)\n" +

                    ".addComponent(new Object())\n" +

                    ".addGap(1)\n" +

                    ".addComponent(new Object())");

    }

    class JavaSource extends SimpleJavaFileObject {

        final String code;

        public JavaSource(String code) {

            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

            this.code = code;

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return code;

        }

    }

}