/*

 * 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 6813059

 * @summary

 * @modules jdk.compiler

 */

import java.io.*;

import java.util.*;

// For each of the permissable values, we compile a file with an error in it,

// then using -XDverboseCompilePolicy we check that the compilation gets as

// far as expected, but no further.

public class Test {

    enum ShouldStopPolicy {

        BLANK(false, null, "attr"),

        PROCESS(true, null, "attr"),

        ATTR(true, "attr", "flow"),

        FLOW(true, "flow", "desugar"),

        TRANSTYPES(true, "desugar", "generate"),

        LOWER(true, "desugar", "generate"),

        GENERATE(true, "generate", null);

        ShouldStopPolicy(boolean needOption, String expect, String dontExpect) {

            this.needOption = needOption;

            this.expect = expect;

            this.dontExpect = dontExpect;

        }

        boolean needOption;

        String expect;

        String dontExpect;

    }

    enum CompilePolicy {

        BYFILE,

        BYTODO

    }

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

        new Test().run();

    }

    public void run() throws Exception {

        for (CompilePolicy cp: CompilePolicy.values()) {

            for (ShouldStopPolicy ssp: ShouldStopPolicy.values()) {

                test(cp, ssp);

            }

        }

        if (errors > 0)

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

    }

    public void test(CompilePolicy cp, ShouldStopPolicy ssp) {

        System.err.println();

        System.err.println("test " + cp + " " + ssp);

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

        args.add("-XDverboseCompilePolicy");

        args.add("-XDcompilePolicy=" + cp.toString().toLowerCase());

        args.add("-d");

        args.add(".");

        if (ssp.needOption)

        args.add(new File(System.getProperty("test.src", "."), "A.java").getPath());

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw);

        System.err.println("compile " + args);

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

        if (rc == 0)

            throw new Error("compilation succeeded unexpectedly");

        //System.err.println(sw);

        // The following is a workaround for the current javac implementation,

        // that in bytodo mode, it will still attribute files after syntax errors.

        // Changing that behavior may surprise existing users, so for now, we

        // work around it.

        if (cp == CompilePolicy.BYTODO && ssp == ShouldStopPolicy.PROCESS)

            ssp = ShouldStopPolicy.ATTR;

        boolean foundExpected = (ssp.expect == null);

        String[] lines = sw.toString().split("\n");

        for (String line: lines) {

            if (ssp.expect != null && line.startsWith("[" + ssp.expect))

                foundExpected = true;

            if (ssp.dontExpect != null && line.startsWith("[" + ssp.dontExpect)) {

                error("Unexpected output: " + ssp.dontExpect + "\n" + sw);

                return;

            }

        }

        if (!foundExpected)

            error("Expected output not found: " + ssp.expect + "\n" + sw);

    }

    void error(String message) {

        System.err.println(message);

        errors++;

    }

    int errors;

}