/*

 * Copyright (c) 2014, 2015, 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 8050106

 * @summary JavaCompiler relies on inappropriate result from comparison

 * @modules jdk.compiler/com.sun.tools.javac.code

 *          jdk.compiler/com.sun.tools.javac.jvm

 */

import java.io.*;

import java.util.*;

import com.sun.tools.javac.code.Source;

import com.sun.tools.javac.jvm.Target;

public class SourceTargetTest {

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

        SourceTargetTest t = new SourceTargetTest();

        t.run();

    }

    public void run() throws Exception {

        try (FileWriter out = new FileWriter("C.java")) {

            out.write("class C { }");

        }

        for (Source s: Source.values()) {

            test(s, null, "source", getKind(s, Source.MIN));

        }

        for (Target t: Target.values()) {

            test(Source.values()[0], t, "target", getKind(t, Target.MIN));

        }

        if (errors > 0)

            throw new Exception(errors + " errors occurred");

    }

    void test(Source s, Target t, String select, Kind kind) {

        System.err.println("Test: source:" + s + ", target:" + t + " " + select + " " + kind);

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

        args.add("-XDrawDiagnostics");

        args.add("-source");

        args.add(s.name);

        if (t != null) {

            args.add("-target");

            args.add(t.name);

        }

        args.add("C.java");

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw);

        int rc = com.sun.tools.javac.Main.compile(args.toArray(new String[args.size()]), pw);

        pw.close();

        String out = sw.toString();

        System.err.print(out);

        switch (kind) {

            case INVALID:

                check(out, "removed." + select, true);

                check(out, "obsolete." + select, false);

                break;

            case OBSOLETE:

                check(out, "removed." + select, false);

                check(out, "obsolete." + select, true);

                break;

            case VALID:

                check(out, "removed." + select, false);

                check(out, "obsolete." + select, false);

                break;

        }

        System.err.println();

    }

    enum Kind { INVALID, OBSOLETE, VALID };

    <T extends Comparable<T>> Kind getKind(T t1, T t2) {

        if (t1.compareTo(t2) < 0)

            return Kind.INVALID;

        else if (t1 == t2)

            return Kind.OBSOLETE;

        else

            return Kind.VALID;

    }

    void check(String out, String text, boolean expect) {

        if (out.contains(text) == expect) {

            if (expect)

                System.err.println("expected string found: " + text);

            else

                System.err.println("string not found, as expected: " + text);

        } else {

            if (expect)

                error("expected string not found: " + text);

            else

                error("unexpected string found: " + text);

        }

    }

    void error(String msg) {

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

        errors++;

    }

    int errors;

}