/*

 * 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.Platform;

import jdk.test.lib.artifacts.Artifact;

import jdk.test.lib.artifacts.ArtifactResolver;

import jdk.test.lib.process.OutputAnalyzer;

import java.io.File;

import java.io.IOException;

import java.lang.annotation.Annotation;

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;

import jdk.test.lib.process.ProcessTools;

/**

 * 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);

        String linker = resolveLinker();

        if (linker != null) {

            args.add("--linker-path");

            args.add(linker);

        }

        // Execute with asserts

        args.add("-J-ea");

        args.add("-J-esa");

        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 ProcessTools.executeCommand(new ProcessBuilder(launcher.getCommand()).redirectErrorStream(true));

        } catch (Throwable 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>]*");

    }

    // runs ld -v (or ld -V on solaris) and check its exit code

    private static boolean checkLd(Path bin) {

        try {

            return 0 == ProcessTools.executeCommand(bin.toString(),

                                                    Platform.isSolaris() ? "-V" : "-v")

                                    .getExitValue();

        } catch (Throwable t) {

            // any errors mean ld doesn't work

            return false;

        }

    }

    public static String resolveLinker() {

        Path linker = null;

        // if non windows, 1st, check if PATH has ld

        if (!Platform.isWindows()) {

            String bin = "ld";

            for (String path : System.getenv("PATH").split(File.pathSeparator)) {

                Path ld = Paths.get(path).resolve("ld");

                if (Files.exists(ld)) {

                    // there is ld in PATH

                    if (checkLd(ld)) {

                        System.out.println("found working linker: " + ld);

                        // ld works, jaotc is supposed to find and use it

                        return null;

                    } else {

                        System.out.println("found broken linker: " + ld);

                        // ld exists in PATH, but doesn't work, have to use devkit

                        break;

                    }

                }

            }

        }

        // there is no ld in PATH, will use ld from devkit

        // artifacts are got from common/conf/jib-profiles.js

        try {

            if (Platform.isWindows()) {

                if (Platform.isX64()) {

                    @Artifact(organization = "jpg.infra.builddeps",

                            name = "devkit-windows_x64",

                            revision = "VS2013SP4+1.0",

                            extension = "tar.gz")

                    class DevkitWindowsX64 { }

                    String artifactName = "jpg.infra.builddeps."

                            + "devkit-windows_x64-"

                            + "VS2013SP4+1.0";

                    Path devkit = ArtifactResolver.resolve(DevkitWindowsX64.class)

                                                  .get(artifactName);

                    linker = devkit.resolve("VC")

                                   .resolve("bin")

                                   .resolve("amd64")

                                   .resolve("link.exe");

                }

            } else if (Platform.isOSX()) {

                @Artifact(organization =  "jpg.infra.builddeps",

                        name = "devkit-macosx_x64",

                        revision = "Xcode6.3-MacOSX10.9+1.0",

                        extension = "tar.gz")

                class DevkitMacosx { }

                String artifactName = "jpg.infra.builddeps."

                        + "devkit-macosx_x64-"

                        + "Xcode6.3-MacOSX10.9+1.0";

                Path devkit = ArtifactResolver.resolve(DevkitMacosx.class)

                                              .get(artifactName);

                linker = devkit.resolve("Xcode.app")

                               .resolve("Contents")

                               .resolve("Developer")

                               .resolve("Toolchains")

                               .resolve("XcodeDefault.xctoolchain")

                               .resolve("usr")

                               .resolve("bin")

                               .resolve("ld");

            } else if (Platform.isSolaris()) {

                if (Platform.isSparc()) {

                    @Artifact(organization =  "jpg.infra.builddeps",

                            name = "devkit-solaris_sparcv9",

                            revision = "SS12u4-Solaris11u1+1.0",

                            extension = "tar.gz")

                    class DevkitSolarisSparc { }

                    String artifactName = "jpg.infra.builddeps."

                            + "devkit-solaris_sparcv9-"

                            + "SS12u4-Solaris11u1+1.0";

                    Path devkit = ArtifactResolver.resolve(DevkitSolarisSparc.class)

                                                  .get(artifactName);

                    linker = devkit.resolve("SS12u4-Solaris11u1")

                                   .resolve("gnu")

                                   .resolve("bin")

                                   .resolve("ld");

                } else if (Platform.isX64()) {

                    @Artifact(organization =  "jpg.infra.builddeps",

                            name = "devkit-solaris_x64",

                            revision = "SS12u4-Solaris11u1+1.0",

                            extension = "tar.gz")

                    class DevkitSolarisX64 { }

                    String artifactName = "jpg.infra.builddeps."

                            + "devkit-solaris_x64-"

                            + "SS12u4-Solaris11u1+1.0";

                    Path devkit = ArtifactResolver.resolve(DevkitSolarisX64.class)

                                                  .get(artifactName);

                    linker = devkit.resolve("SS12u4-Solaris11u1")

                                   .resolve("bin")

                                   .resolve("amd64")

                                   .resolve("ld");

                }

            } else if (Platform.isLinux()) {

                if (Platform.isAArch64()) {

                    @Artifact(organization = "jpg.infra.builddeps",

                            name = "devkit-linux_aarch64",

                            revision = "gcc-linaro-aarch64-linux-gnu-4.8-2013.11_linux+1.0",

                            extension = "tar.gz")

                    class DevkitLinuxAArch64 { }

                    String artifactName = "jpg.infra.builddeps."

                            + "devkit-linux_aarch64-"

                            + "gcc-linaro-aarch64-linux-gnu-4.8-2013.11_linux+1.0";

                    Path devkit = ArtifactResolver.resolve(DevkitLinuxAArch64.class)

                                                  .get(artifactName);

                    linker = devkit.resolve("aarch64-linux-gnu")

                                   .resolve("bin")

                                   .resolve("ld");

                } else if (Platform.isARM()) {

                    @Artifact(organization = "jpg.infra.builddeps",

                            name = "devkit-linux_arm",

                            revision = "gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux+1.0",

                            extension = "tar.gz")

                    class DevkitLinuxARM { }

                    String artifactName = "jpg.infra.builddeps."

                            + "devkit-linux_arm-"

                            + "gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux+1.0";

                    Path devkit = ArtifactResolver.resolve(DevkitLinuxARM.class)

                                                  .get(artifactName);

                    linker = devkit.resolve("arm-linux-gnueabihf")

                                   .resolve("bin")

                                   .resolve("ld");

                } else if (Platform.isX64()) {

                    @Artifact(organization = "jpg.infra.builddeps",

                            name = "devkit-linux_x64",

                            revision = "gcc4.9.2-OEL6.4+1.1",

                            extension = "tar.gz")

                    class DevkitLinuxX64 { }

                    String artifactName = "jpg.infra.builddeps."

                            + "devkit-linux_x64-"

                            + "gcc4.9.2-OEL6.4+1.1";

                    Path devkit = ArtifactResolver.resolve(DevkitLinuxX64.class)

                                                  .get(artifactName);

                    linker = devkit.resolve("bin")

                                   .resolve("ld");

                }

            }

            System.err.println("artifact resolution error: " + e);

            // let jaotc try to find linker

            return null;

        }

        if (linker != null) {

            return linker.toAbsolutePath().toString();

        }

        return null;

    }

}