public <T> ObjectConstructor<T> get(TypeToken<T> typeToken) {
final Type type = typeToken.getType();
Class<? super T> rawType = typeToken.getRawType();
final InstanceCreator<T> typeCreator = (InstanceCreator) this.instanceCreators.get(type);
if (typeCreator != null) {
new ObjectConstructor() {
public T construct() {
return (T) typeCreator.createInstance(type);
}
};
}
final InstanceCreator<T> rawTypeCreator = (InstanceCreator) this.instanceCreators.get(rawType);
if (rawTypeCreator != null) {
new ObjectConstructor() {
public T construct() {
return (T) rawTypeCreator.createInstance(type);
}
};
}
ObjectConstructor<T> defaultConstructor = newDefaultConstructor(rawType);
if (defaultConstructor != null) {
return defaultConstructor;
}
ObjectConstructor<T> defaultImplementation = newDefaultImplementationConstructor(type, rawType);
if (defaultImplementation != null) {
return defaultImplementation;
}
return newUnsafeAllocator(type, rawType);
}
private <T> ObjectConstructor<T> newDefaultImplementationConstructor(
final Type type, Class<? super T> rawType) {
if (Collection.class.isAssignableFrom(rawType)) {
if (SortedSet.class.isAssignableFrom(rawType)) {
new ObjectConstructor() {
public T construct() {
return new TreeSet();
}
};
}
if (EnumSet.class.isAssignableFrom(rawType)) {
new ObjectConstructor() {
public T construct() {
if ((type instanceof ParameterizedType)) {
Type elementType = ((ParameterizedType) type).getActualTypeArguments()[0];
if ((elementType instanceof Class)) {
return EnumSet.noneOf((Class) elementType);
}
throw new JsonIOException("Invalid EnumSet type: " + type.toString());
}
throw new JsonIOException("Invalid EnumSet type: " + type.toString());
}
};
}
if (Set.class.isAssignableFrom(rawType)) {
new ObjectConstructor() {
public T construct() {
return new LinkedHashSet();
}
};
}
if (Queue.class.isAssignableFrom(rawType)) {
new ObjectConstructor() {
public T construct() {
return new LinkedList();
}
};
}
new ObjectConstructor() {
public T construct() {
return new ArrayList();
}
};
}
if (Map.class.isAssignableFrom(rawType)) {
if (SortedMap.class.isAssignableFrom(rawType)) {
new ObjectConstructor() {
public T construct() {
return new TreeMap();
}
};
}
if (((type instanceof ParameterizedType))
&& (!String.class.isAssignableFrom(
TypeToken.get(((ParameterizedType) type).getActualTypeArguments()[0])
.getRawType()))) {
new ObjectConstructor() {
public T construct() {
return new LinkedHashMap();
}
};
}
new ObjectConstructor() {
public T construct() {
return new LinkedTreeMap();
}
};
}
return null;
}