/*

 * 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 7026509

 * @summary Cannot use JavaCompiler to create multiple CompilationTasks for partial compilations

 */

import java.io.*;

import java.util.*;

import javax.lang.model.element.*;

import javax.tools.*;

import com.sun.source.tree.*;

import com.sun.source.util.*;

public class TestJavacTask_ParseAttrGen {

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

        new TestJavacTask_ParseAttrGen().run();

    }

    JavaCompiler comp;

    StandardJavaFileManager fm;

    void run() throws Exception {

        comp = ToolProvider.getSystemJavaCompiler();

        fm = comp.getStandardFileManager(null, null, null);

        try {

            final boolean[] booleanValues = { false, true };

            for (boolean pk: booleanValues) {

                for (boolean ak: booleanValues) {

                    for (boolean gk: booleanValues) {

                        test(pk, ak, gk);

                    }

                }

            }

        } finally {

            fm.close();

        }

    }

    void test(boolean pk, boolean ak, boolean gk) throws Exception {

        if (!pk && !ak && !gk)  // nothing to do

            return;

        System.err.println("test: pk:" + pk + ", ak:" + ak + ", gk: " + gk);

        File testSrc = new File(System.getProperty("test.src"));

        String thisClassName = TestJavacTask_ParseAttrGen.class.getName();

        Iterable<? extends JavaFileObject> files =

                fm.getJavaFileObjects(new File(testSrc, thisClassName + ".java"));

        File tmpDir = new File((pk ? "p" : "") + (ak ? "a" : "") + (gk ? "g" : ""));

        tmpDir.mkdirs();

        fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(tmpDir));

        JavacTask t = (JavacTask) comp.getTask(null, fm, null, null, null, files);

        //t.setTaskListener(createTaskListener());

        try {

            if (pk) {

                Iterable<? extends CompilationUnitTree> trees = t.parse();

                System.err.println(count(trees) + " trees parsed");

            }

            if (ak) {

                Iterable<? extends Element> elems = t.analyze();

                System.err.println(count(elems) + " elements analyzed");

            }

            if (gk) {

                Iterable<? extends JavaFileObject> classfiles = t.generate();

                System.err.println(count(classfiles) + " class files generated");

            }

        } catch (IOException e) {

            error("unexpected exception caught: " + e);

        }

        File[] genFiles = tmpDir.listFiles();

        int expect = (gk ? 2 : 0); // main class and anon class for TaskListener

        if (genFiles.length != expect)

            error("unexpected number of files generated: " + genFiles.length

                    + ", expected: " + expect);

        System.err.println();

    }

    TaskListener createTaskListener() {

        return new TaskListener() {

            public void started(TaskEvent e) {

                System.err.println(e + " started");

            }

            public void finished(TaskEvent e) {

                System.err.println(e + " finished");

            }

        };

    }

    <T> int count(Iterable<T> items) {

        int count = 0;

        for (T item: items)

            count++;

        return count;

    }

    void error(String msg) {

        System.err.println("Error: " + msg);

        errors++;

    }

    int errors;

}