public static int getArrayDimensions(final MetaClass type) {
if (!type.isArray()) return 0;
final String internalName = type.getInternalName();
for (int i = 0; i < internalName.length(); i++) {
if (internalName.charAt(i) != '[') return i;
}
return 0;
}
public static int scoreMethods(
final MetaClass[] arguments, final MetaParameter[] parmTypes, final boolean isVarArgs) {
int score = 0;
for (int i = 0; i != arguments.length; i++) {
final MetaClass actualParamType;
if (isVarArgs && !arguments[arguments.length - 1].isArray() && i >= parmTypes.length - 1)
actualParamType = parmTypes[parmTypes.length - 1].getType().getComponentType();
else actualParamType = parmTypes[i].getType();
if (arguments[i] == null) {
if (!actualParamType.isPrimitive()) {
score += 6;
} else {
score = 0;
break;
}
} else if (actualParamType.equals(arguments[i])) {
score += 7;
} else if (actualParamType.isPrimitive() && actualParamType.asBoxed().equals(arguments[i])) {
score += 6;
} else if (arguments[i].isPrimitive() && arguments[i].asUnboxed().equals(actualParamType)) {
score += 6;
} else if (actualParamType.isAssignableFrom(arguments[i])) {
score += 5;
} else if (isNumericallyCoercible(arguments[i], actualParamType)) {
score += 4;
} else if (actualParamType.asBoxed().isAssignableFrom(arguments[i].asBoxed())
&& !Object_MetaClass.equals(arguments[i])) {
score += 3 + scoreInterface(actualParamType, arguments[i]);
} else if (canConvert(actualParamType, arguments[i])) {
if (actualParamType.isArray() && arguments[i].isArray()) {
final MetaClass outerComponentTypeActual = actualParamType.getOuterComponentType();
final MetaClass outerComponentTypeArg = arguments[i].getOuterComponentType();
if (canConvert(outerComponentTypeActual, outerComponentTypeArg)) {
score += 1;
} else {
continue;
}
} else if (actualParamType.equals(char_MetaClass)
&& arguments[i].equals(String_MetaClass)) {
score += 1;
}
score += 1;
} else if (actualParamType.equals(Object_MetaClass)
|| arguments[i].equals(NullType_MetaClass)) {
score += 1;
} else {
score = 0;
break;
}
}
return score;
}
public static void assertAssignableTypes(
final Context context, final MetaClass from, final MetaClass to) {
if (!to.asBoxed().isAssignableFrom(from.asBoxed())) {
if (to.isArray()
&& from.isArray()
&& GenUtil.getArrayDimensions(to) == GenUtil.getArrayDimensions(from)
&& to.getOuterComponentType().isAssignableFrom(from.getOuterComponentType())) {
return;
}
if (!context.isPermissiveMode()) {
if (classAliases.contains(from.getFullyQualifiedName())
&& classAliases.contains(to.getFullyQualifiedName())) {
// handle convertibility between MetaClass API and java Class reference.
return;
}
throw new InvalidTypeException(
to.getFullyQualifiedName() + " is not assignable from " + from.getFullyQualifiedName());
}
}
}
public static ReachableTypes getAllReachableClasses(final GeneratorContext context) {
if (System.getProperty(SYSPROP_USE_REACHABILITY_ANALYSIS) == null
|| !Boolean.getBoolean(SYSPROP_USE_REACHABILITY_ANALYSIS)) {
log.warn("reachability analysis disabled. errai may generate unnecessary code.");
log.warn(
"enable reachability analysis with -D" + SYSPROP_USE_REACHABILITY_ANALYSIS + "=true");
return ReachableTypes.EVERYTHING_REACHABLE_INSTANCE;
}
ReachabilityCache cache;
if (reachabilityCache == null || (cache = reachabilityCache.get()) == null) {
reachabilityCache = new SoftReference<ReachabilityCache>(cache = new ReachabilityCache());
}
if (cache.isCacheValid(context)) {
return cache.getCache(context);
}
final EnvironmentConfig config = getEnvironmentConfig();
long time = System.currentTimeMillis();
final Set<String> packages = new HashSet<String>();
if (isJUnitTest()) {
packages.addAll(RebindUtils.findTranslatablePackagesInModule(context));
} else {
packages.addAll(RebindUtils.getOuterTranslatablePackages(context));
}
class Reachability {
private final Set<String> packages;
private final Set<String> negativeHits = new HashSet<String>();
Reachability(final Set<String> packages) {
this.packages = new HashSet<String>(packages);
}
public boolean isReachablePackage(final String pkg) {
if (pkg == null || packages.contains(pkg)) {
return true;
}
if (negativeHits.contains(pkg)) {
return false;
}
for (final String p : packages) {
if (pkg.startsWith(p)) {
packages.add(pkg);
return true;
}
}
negativeHits.add(pkg);
return false;
}
}
final Set<String> allDependencies =
Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(100));
final Collection<MetaClass> allCachedClasses = MetaClassFactory.getAllCachedClasses();
final ClassLoader classLoader = EnvUtil.class.getClassLoader();
final ExecutorService executor =
Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
final Reachability reachability = new Reachability(packages);
try {
for (final MetaClass mc : allCachedClasses) {
String fullyQualifiedName = mc.getFullyQualifiedName();
int splitPoint;
while ((splitPoint = fullyQualifiedName.lastIndexOf('$')) != -1) {
fullyQualifiedName = fullyQualifiedName.substring(0, splitPoint);
}
if (mc.isPrimitive() || mc.isArray()) {
continue;
} else if (isReachabilityExcluded(mc.getPackageName())) {
continue;
} else if (!config.getExplicitTypes().contains(fullyQualifiedName)
&& !reachability.isReachablePackage(mc.getPackageName())) {
continue;
}
final URL resource =
classLoader.getResource(fullyQualifiedName.replaceAll("\\.", "/") + ".java");
if (resource != null) {
InputStream stream = null;
try {
stream = new BufferedInputStream(resource.openStream());
final byte[] readBuffer = new byte[stream.available()];
stream.read(readBuffer);
if (log.isDebugEnabled()) {
log.debug("scanning " + fullyQualifiedName + " for reachable types ...");
}
executor.execute(new ReachabilityRunnable(readBuffer, allDependencies));
} catch (IOException e) {
log.warn("could not open resource: " + resource.getFile());
} finally {
if (stream != null) {
stream.close();
}
}
} else {
log.warn("source for " + fullyQualifiedName + " is missing.");
}
}
} catch (Throwable e) {
e.printStackTrace();
}
try {
executor.shutdown();
executor.awaitTermination(60, TimeUnit.MINUTES);
} catch (InterruptedException e) {
log.warn("the reachability analysis was interrupted", e);
cache.putCache(context, ReachableTypes.EVERYTHING_REACHABLE_INSTANCE);
return ReachableTypes.EVERYTHING_REACHABLE_INSTANCE;
}
if (log.isDebugEnabled()) {
log.debug("*** REACHABILITY ANALYSIS (production mode: " + EnvUtil.isProdMode() + ") ***");
for (final String s : allDependencies) {
log.debug(" -> " + s);
}
time = System.currentTimeMillis() - time;
log.debug("*** END OF REACHABILITY ANALYSIS (" + time + "ms) *** ");
}
final ReachableTypes reachableTypes = new ReachableTypes(allDependencies, true);
cache.putCache(context, reachableTypes);
return reachableTypes;
}
