/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package kotlin.jvm.internal;
import java.lang.Object;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
public class SpreadBuilder {
private final ArrayList<Object> list;
public SpreadBuilder(int size) {
list = new ArrayList<Object>(size);
}
public void addSpread(Object container) {
if (container == null) return;
if (container instanceof Object[]) {
Object[] array = (Object[]) container;
if (array.length > 0) {
list.ensureCapacity(list.size() + array.length);
for (Object element : array) {
list.add(element);
}
}
}
else if (container instanceof Collection) {
list.addAll((Collection) container);
}
else if (container instanceof Iterable) {
for (Object element : (Iterable) container) {
list.add(element);
}
}
else if (container instanceof Iterator) {
for (Iterator iterator = (Iterator) container; iterator.hasNext(); ) {
list.add(iterator.next());
}
}
else {
throw new UnsupportedOperationException("Don't know how to spread " + container.getClass());
}
}
public int size() {
return list.size();
}
public void add(Object element) {
list.add(element);
}
public Object[] toArray(Object[] a) {
return list.toArray(a);
}
}