/*

 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

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 */

/*

 * @test

 * @bug 6627362

 * @summary javac generates code that uses array.clone,

 *          which is not available on JavaCard

 */

import java.io.*;

import java.lang.reflect.*;

import java.net.*;

import java.util.*;

public class T6627362 {

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

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

        new T6627362().run();

    }

    public void run() throws Exception {

        testStandard();

        testNoClone();

        if (errors > 0)

            throw new Error(errors + " test cases failed");

    }

    void testStandard() throws Exception {

        // compile and disassemble E.java, check for reference to Object.clone()

        File x = new File(testSrc, "x");

        String[] jcArgs = { "-d", ".",

                            new File(x, "E.java").getPath() };

        compile(jcArgs);

        String[] jpArgs = { "-classpath", ".", "-c", "E" };

        StringWriter sw = new StringWriter();

        javap(new PrintWriter(sw, true), jpArgs);

        check(sw.toString(), "Method \"[LE;\".clone:()Ljava/lang/Object;");

        callValues();

    }

    void testNoClone() throws Exception {

        // compile and disassemble E.java, using modified Object.java,

        // check for reference to System.arraycopy

        File x = new File(testSrc, "x");

        String[] jcArgs = { "-d", ".",

                            new File(x, "E.java").getPath(),

                            new File(x, "Object.java").getPath()};

        compile(jcArgs);

        String[] jpArgs = { "-classpath", ".", "-c", "E" };

        StringWriter sw = new StringWriter();

        javap(new PrintWriter(sw, true), jpArgs);

        check(sw.toString(), "//Method java/lang/System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V");

        callValues();

    }

    void compile(String... args) {

        int rc = com.sun.tools.javac.Main.compile(args);

        if (rc != 0)

            throw new Error("javac failed: " + Arrays.asList(args) + ": " + rc);

    }

    void javap(PrintWriter out, String... args) throws Exception {

        // for now, we have to exec javap

        File javaHome = new File(System.getProperty("java.home"));

        if (javaHome.getName().equals("jre"))

            javaHome = javaHome.getParentFile();

        File javap = new File(new File(javaHome, "bin"), "javap");

        String[] cmd = new String[args.length + 1];

        cmd[0] = javap.getPath();

        System.arraycopy(args, 0, cmd, 1, args.length);

        Process p = new ProcessBuilder(cmd).redirectErrorStream(true).start();

        p.getOutputStream().close();

        BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));

        String line;

        while ((line = in.readLine()) != null)

            out.println(line);

        int rc = p.waitFor();

        if (rc != 0)

            throw new Error("javap failed: " + Arrays.asList(args) + ": " + rc);

    }

    void check(String s, String require) {

        if (s.indexOf(require) == -1) {

            System.err.println("Can't find " + require);

            errors++;

        }

    }

    void callValues() {

        try {

            File dot = new File(System.getProperty("user.dir"));

            ClassLoader cl = new URLClassLoader(new URL[] { dot.toURL() });

            Class<?> e_class = cl.loadClass("E");

            Method m = e_class.getMethod("values", new Class[] { });

            //System.err.println(m);

            Object o = m.invoke(null, (Object[]) null);

            List<Object> v = Arrays.asList((Object[]) o);

            if (!v.toString().equals("[a, b, c]"))

                throw new Error("unexpected result for E.values(): " + v);

        } catch (Exception e) {

            throw new Error(e);

        }

    }

    int errors;

}