/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

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 * 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

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 */

/**

 * @test

 * @bug 6341866

 * @summary Source files loaded from source path are not subject to annotation processing

 * @build Anno T6341866

 * @run main T6341866

 */

import java.io.*;

import java.util.*;

import javax.annotation.processing.*;

import javax.tools.*;

/**

 * For each of a number of implicit compilation scenarios,

 * and for each of a set of annotation processing scenarios,

 * verify that a class file is generated, or not, for an

 * implicitly compiled source file and that the correct

 * warning message is given for implicitly compiled files

 * when annotation processing.

 */

public class T6341866 {

    static final String testSrc = System.getProperty("test.src", ".");

    static final String testClasses = System.getProperty("test.classes", ".");

    static final File a_java = new File(testSrc, "A.java");

    static final File a_class = new File("A.class");

    static final File b_java = new File(testSrc, "B.java");

    static final File b_class = new File("B.class");

    static final File processorServices = services(Processor.class);

    enum ImplicitType {

        NONE(null),                     // don't use implicit compilation

        OPT_UNSET(null),                // implicit compilation, but no -implicit option

        OPT_NONE("-implicit:none"),     // implicit compilation wiith -implicit:none

        OPT_CLASS("-implicit:class");   // implicit compilation wiith -implicit:class

        ImplicitType(String opt) {

            this.opt = opt;

        }

        final String opt;

    };

    enum AnnoType {

        NONE,           // no annotation processing

        SERVICE,        // implicit annotation processing, via ServiceLoader

        SPECIFY         // explicit annotation processing

    };

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

        boolean ok = true;

        // iterate over all combinations

        for (ImplicitType implicitType: EnumSet.allOf(ImplicitType.class)) {

            for (AnnoType annoType: EnumSet.allOf(AnnoType.class)) {

                ok &= test(implicitType, annoType);

            }

        }

        if (!ok)

            throw new AssertionError("test failed");

    }

    /**

     * Verify that a class file is generated, or not, for an implicitly compiled source file,

     * and that the correct warning message is given for implicitly compiled files when annotation processing.

     */

    static boolean test(ImplicitType implicitType, AnnoType annoType) throws IOException {

        System.err.println("test  implicit=" + implicitType + "  anno=" + annoType);

        // ensure clean start

        a_class.delete();

        b_class.delete();

        processorServices.delete();

        List<String> opts = new ArrayList<String>();

        opts.addAll(Arrays.asList("-d", ".", "-sourcepath", testSrc, "-classpath", testClasses, "-Xlint:-options"));

        if (implicitType.opt != null)

            opts.add(implicitType.opt);

        switch (annoType) {

        case SERVICE:

            createProcessorServices(Anno.class.getName());

            break;

        case SPECIFY:

            opts.addAll(Arrays.asList("-processor", Anno.class.getName()));

            break;

        }

        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();

        MyDiagListener dl = new MyDiagListener();

        try (StandardJavaFileManager fm = javac.getStandardFileManager(dl, null, null)) {

            // Note: class A references class B, so compile A if we want implicit compilation

            File file =  (implicitType != ImplicitType.NONE) ? a_java : b_java;

            Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file);

            //System.err.println("compile: " + opts + " " + files);

            boolean ok = javac.getTask(null, fm, dl, opts, null, files).call();

            if (!ok) {

                error("compilation failed");

                return false;

            }

            // check implicit compilation results if necessary

            if (implicitType != ImplicitType.NONE) {

                boolean expectClass = (implicitType != ImplicitType.OPT_NONE);

                if (b_class.exists() != expectClass) {

                    if (b_class.exists())

                        error("B implicitly compiled unexpectedly");

                    else

                        error("B not impliictly compiled");

                    return false;

                }

            }

            // check message key results

            String expectKey = null;

            if (implicitType == ImplicitType.OPT_UNSET) {

                switch (annoType) {

                case SERVICE:

                    expectKey = "compiler.warn.proc.use.proc.or.implicit";

                    break;

                case SPECIFY:

                    expectKey = "compiler.warn.proc.use.implicit";

                    break;

                }

            }

            if (expectKey == null) {

                if (dl.diagCodes.size() != 0) {

                    error("no diagnostics expected");

                    return false;

                }

            } else {

                if (!(dl.diagCodes.size() == 1 && dl.diagCodes.get(0).equals(expectKey))) {

                    error("unexpected diagnostics generated");

                    return false;

                }

            }

            return true;

        }

    }

    static void createProcessorServices(String name) throws IOException {

        processorServices.getParentFile().mkdirs();

        BufferedWriter out = new BufferedWriter(new FileWriter(processorServices));

        out.write(name);

        out.newLine();

        out.close();

    }

    static class MyDiagListener implements DiagnosticListener<JavaFileObject> {

        public void report(Diagnostic d) {

            diagCodes.add(d.getCode());

            System.err.println(d);

        }

        List<String> diagCodes = new ArrayList<String>();

    }

    static void error(String msg) {

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

    }

    static File services(Class<?> service) {

        String[] dirs = { testClasses, "META-INF", "services" };

        File dir = null;

        for (String d: dirs)

            dir = (dir == null ? new File(d) : new File(dir, d));

        return new File(dir, service.getName());

    }

}