/*

 * Copyright (c) 2016, 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.

 */

package compiler.aot;

import jdk.test.lib.process.OutputAnalyzer;

import java.io.File;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.nio.file.StandardOpenOption;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import jdk.test.lib.JDKToolLauncher;

import jdk.test.lib.Utils;

/**

 * A simple class calling AOT compiler over requested items

 */

public class AotCompiler {

    private final static String METHODS_LIST_FILENAME = "methodsList.txt";

    public static void main(String args[]) {

        String className = null;

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

        String libName = null;

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

        for (int i = 0; i < args.length; i++) {

            switch (args[i]) {

                case "-class":

                    className = args[++i];

                    break;

                case "-compile":

                    compileList.add("compileOnly " + args[++i]);

                    break;

                case "-libname":

                    libName = args[++i];

                    break;

                case "-extraopt":

                    extraopts.add(args[++i]);

                    break;

                default:

                    throw new Error("Unknown option: " + args[i]);

            }

        }

        extraopts.add("-classpath");

        extraopts.add(Utils.TEST_CLASS_PATH + File.pathSeparator + Utils.TEST_SRC);

        if (className != null && libName != null) {

            OutputAnalyzer oa = launchCompiler(libName, className, extraopts, compileList);

            oa.shouldHaveExitValue(0);

        } else {

            printUsage();

            throw new Error("Mandatory arguments aren't passed");

        }

    }

    public static OutputAnalyzer launchCompilerSimple(String... args) {

        return launchJaotc(Arrays.asList(args), null);

    }

    public static OutputAnalyzer launchCompiler(String libName, String item, List<String> extraopts,

            List<String> compList) {

        Path file = null;

        if (compList != null && !compList.isEmpty()) {

            file = Paths.get(METHODS_LIST_FILENAME);

            try {

                Files.write(file, compList, StandardOpenOption.CREATE);

            } catch (IOException e) {

                throw new Error("Couldn't write " + METHODS_LIST_FILENAME + " " + e, e);

            }

        }

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

        args.add("--compile-with-assertions");

        args.add("--output");

        args.add(libName);

        if (file != null) {

            args.add("--compile-commands");

            args.add(file.toString());

        }

        args.add("--class-name");

        args.add(item);

        return launchJaotc(args, extraopts);

    }

    private static OutputAnalyzer launchJaotc(List<String> args, List<String> extraVmOpts) {

        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jaotc");

        for (String vmOpt : Utils.getTestJavaOpts()) {

            launcher.addVMArg(vmOpt);

        }

        if (extraVmOpts != null) {

            for (String vmOpt : extraVmOpts) {

                launcher.addVMArg(vmOpt);

            }

        }

        for (String arg : args) {

            launcher.addToolArg(arg);

        }

        try {

            return new OutputAnalyzer(new ProcessBuilder(launcher.getCommand()).inheritIO().start());

        } catch (IOException e) {

            throw new Error("Can't start test process: " + e, e);

        }

    }

    public static void printUsage() {

        System.err.println("Usage: " + AotCompiler.class.getName()

                + " -class <class> -libname <.so name>"

                + " [-compile <compileItems>]* [-extraopt <java option>]*");

    }

}