import otherpackage.OtherPackagePublicEnum;
import java.lang.reflect.*;
public class Main {
/** used by {@link #basisCall} */
static private int basisTestValue = 12;
static public void main(String[] args) throws Exception {
try {
Class<?> enumClass = Enum.class;
Method enumValueOf = null;
for (Method m : enumClass.getDeclaredMethods()) {
if (m.getName().equals("valueOf")) {
enumValueOf = m;
break;
}
}
enumValueOf.invoke(null, String.class, "blah");
throw new AssertionError();
} catch (InvocationTargetException expected) {
IllegalArgumentException iae = (IllegalArgumentException) expected.getCause();
if (!iae.getMessage().equals("class java.lang.String is not an enum type")) {
throw new AssertionError();
}
}
boolean timing = (args.length >= 1) && args[0].equals("--timing");
run(timing);
}
static public void run(boolean timing) {
preTest();
long time0 = System.nanoTime();
int count1 = test1(500);
long time1 = System.nanoTime();
int count2 = test2(500);
long time2 = System.nanoTime();
int count3 = test3(500);
long time3 = System.nanoTime();
int count4 = basis(500);
long time4 = System.nanoTime();
System.out.println("basis: performed " + count4 + " iterations");
System.out.println("test1: performed " + count1 + " iterations");
System.out.println("test2: performed " + count2 + " iterations");
System.out.println("test3: performed " + count3 + " iterations");
double msec1 = (time1 - time0) / (double) count1 / 1000000;
double msec2 = (time2 - time1) / (double) count2 / 1000000;
double msec3 = (time3 - time2) / (double) count3 / 1000000;
double basisMsec = (time4 - time3) / (double) count4 / 1000000;
double avg = (msec1 + msec2 + msec3) / 3;
if (avg < (basisMsec * 10)) {
System.out.println("Timing is acceptable.");
} else {
System.out.println("Iterations are taking too long!");
timing = true;
}
if (timing) {
System.out.printf("basis time: %.3g msec\n", basisMsec);
System.out.printf("test1: %.3g msec per iteration\n", msec1);
System.out.printf("test2: %.3g msec per iteration\n", msec2);
System.out.printf("test3: %.3g msec per iteration\n", msec3);
}
}
static public void preTest() {
/*
* This is meant to ensure that the basic enum functionality
* really is working.
*/
Class<SamePackagePublicEnum> c = SamePackagePublicEnum.class;
System.out.println(Enum.valueOf(c, "FOUR"));
System.out.println(Enum.valueOf(c, "ONE"));
System.out.println(Enum.valueOf(c, "FOURTEEN"));
System.out.println(Enum.valueOf(c, "NINE"));
System.out.println(Enum.valueOf(c, "FIVE"));
System.out.println(Enum.valueOf(c, "TWELVE"));
System.out.println(Enum.valueOf(c, "ZERO").getClass().getName());
}
static final String[] BASIS_COMPARE_ARRAY = {
"ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT",
"NINE", "TEN", "ELEVEN", "TWELVE", "THIRTEEN", "FOURTEEN", "FIFTEEN",
"SIXTEEN", "SEVENTEEN", "EIGHTEEN", "NINETEEN"
};
static public int basis(int iters) {
for (int i = iters; i > 0; i--) {
basisValueOf("ZERO");
basisValueOf("ONE");
basisValueOf("TWO");
basisValueOf("THREE");
basisValueOf("FOUR");
basisValueOf("FIVE");
basisValueOf("SIX");
basisValueOf("SEVEN");
basisValueOf("EIGHT");
basisValueOf("NINE");
basisValueOf("TEN");
basisValueOf("ELEVEN");
basisValueOf("TWELVE");
basisValueOf("THIRTEEN");
basisValueOf("FOURTEEN");
basisValueOf("FIFTEEN");
basisValueOf("SIXTEEN");
basisValueOf("SEVENTEEN");
basisValueOf("EIGHTEEN");
basisValueOf("NINETEEN");
}
return iters * 20;
}
static String basisValueOf(String key) {
for (String s : BASIS_COMPARE_ARRAY) {
if (s.equals(key)) {
return s;
}
}
throw new IllegalArgumentException();
}
static public int test1(int iters) {
Class<SamePackagePublicEnum> c = SamePackagePublicEnum.class;
for (int i = iters; i > 0; i--) {
Enum.valueOf(c, "ZERO");
Enum.valueOf(c, "ONE");
Enum.valueOf(c, "TWO");
Enum.valueOf(c, "THREE");
Enum.valueOf(c, "FOUR");
Enum.valueOf(c, "FIVE");
Enum.valueOf(c, "SIX");
Enum.valueOf(c, "SEVEN");
Enum.valueOf(c, "EIGHT");
Enum.valueOf(c, "NINE");
Enum.valueOf(c, "TEN");
Enum.valueOf(c, "ELEVEN");
Enum.valueOf(c, "TWELVE");
Enum.valueOf(c, "THIRTEEN");
Enum.valueOf(c, "FOURTEEN");
Enum.valueOf(c, "FIFTEEN");
Enum.valueOf(c, "SIXTEEN");
Enum.valueOf(c, "SEVENTEEN");
Enum.valueOf(c, "EIGHTEEN");
Enum.valueOf(c, "NINETEEN");
}
return iters * 20;
}
static public int test2(int iters) {
Class<SamePackagePrivateEnum> c = SamePackagePrivateEnum.class;
for (int i = iters; i > 0; i--) {
Enum.valueOf(c, "ZERO");
Enum.valueOf(c, "ONE");
Enum.valueOf(c, "TWO");
Enum.valueOf(c, "THREE");
Enum.valueOf(c, "FOUR");
Enum.valueOf(c, "FIVE");
Enum.valueOf(c, "SIX");
Enum.valueOf(c, "SEVEN");
Enum.valueOf(c, "EIGHT");
Enum.valueOf(c, "NINE");
Enum.valueOf(c, "TEN");
Enum.valueOf(c, "ELEVEN");
Enum.valueOf(c, "TWELVE");
Enum.valueOf(c, "THIRTEEN");
Enum.valueOf(c, "FOURTEEN");
Enum.valueOf(c, "FIFTEEN");
Enum.valueOf(c, "SIXTEEN");
Enum.valueOf(c, "SEVENTEEN");
Enum.valueOf(c, "EIGHTEEN");
Enum.valueOf(c, "NINETEEN");
}
return iters * 20;
}
static public int test3(int iters) {
Class<OtherPackagePublicEnum> c = OtherPackagePublicEnum.class;
for (int i = iters; i > 0; i--) {
Enum.valueOf(c, "ZERO");
Enum.valueOf(c, "ONE");
Enum.valueOf(c, "TWO");
Enum.valueOf(c, "THREE");
Enum.valueOf(c, "FOUR");
Enum.valueOf(c, "FIVE");
Enum.valueOf(c, "SIX");
Enum.valueOf(c, "SEVEN");
Enum.valueOf(c, "EIGHT");
Enum.valueOf(c, "NINE");
Enum.valueOf(c, "TEN");
Enum.valueOf(c, "ELEVEN");
Enum.valueOf(c, "TWELVE");
Enum.valueOf(c, "THIRTEEN");
Enum.valueOf(c, "FOURTEEN");
Enum.valueOf(c, "FIFTEEN");
Enum.valueOf(c, "SIXTEEN");
Enum.valueOf(c, "SEVENTEEN");
Enum.valueOf(c, "EIGHTEEN");
Enum.valueOf(c, "NINETEEN");
}
return iters * 20;
}
}