/*

 * @test    /nodynamiccopyright/

 * @bug     4209652 4363318

 * @summary Basic test for chained exceptions & Exception.getStackTrace().

 * @author  Josh Bloch

 */

public class ChainedExceptions {

    public static void main(String args[]) {

        try {

            a();

        } catch(HighLevelException e) {

            StackTraceElement[] highTrace = e.getStackTrace();

            int depthTrim = highTrace.length - 2;

            check(e, highTrace[0], "a",    48);

            check(e, highTrace[1], "main", 11);

            Throwable mid = e.getCause();

            StackTraceElement[] midTrace = mid.getStackTrace();

            if (midTrace.length - depthTrim != 4)

                throw new RuntimeException("Mid depth");

            check(mid, midTrace[0], "c",    58);

            check(mid, midTrace[1], "b",    52);

            check(mid, midTrace[2], "a",    46);

            check(mid, midTrace[3], "main", 11);

            Throwable low = mid.getCause();

            StackTraceElement[] lowTrace = low.getStackTrace();

            if (lowTrace.length - depthTrim != 6)

                throw new RuntimeException("Low depth");

            check(low, lowTrace[0], "e",    65);

            check(low, lowTrace[1], "d",    62);

            check(low, lowTrace[2], "c",    56);

            check(low, lowTrace[3], "b",    52);

            check(low, lowTrace[4], "a",    46);

            check(low, lowTrace[5], "main", 11);

            if (low.getCause() != null)

                throw new RuntimeException("Low cause != null");

        }

    }

    static void a() throws HighLevelException {

        try {

            b();

        } catch(MidLevelException e) {

            throw new HighLevelException(e);

        }

    }

    static void b() throws MidLevelException {

        c();

    }

    static void c() throws MidLevelException {

        try {

            d();

        } catch(LowLevelException e) {

            throw new MidLevelException(e);

        }

    }

    static void d() throws LowLevelException {

       e();

    }

    static void e() throws LowLevelException {

        throw new LowLevelException();

    }

    private static final String OUR_CLASS  = ChainedExceptions.class.getName();

    private static final String OUR_FILE_NAME = "ChainedExceptions.java";

    private static void check(Throwable t, StackTraceElement e, String methodName, int n) {

        if (!e.getClassName().equals(OUR_CLASS))

            throw new RuntimeException("Class: " + e, t);

        if (!e.getMethodName().equals(methodName))

            throw new RuntimeException("Method name: " + e, t);

        if (!e.getFileName().equals(OUR_FILE_NAME))

            throw new RuntimeException("File name: " + e, t);

        if (e.getLineNumber() != n)

            throw new RuntimeException("Line number: " + e, t);

    }

}

class HighLevelException extends Exception {

    HighLevelException(Throwable cause) { super(cause); }

}

class MidLevelException extends Exception {

    MidLevelException(Throwable cause)  { super(cause); }

}

class LowLevelException extends Exception {

}