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/*
* Copyright (C) 2009 The Guava Authors
*
* 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 com.google.common.collect;
import com.google.gwt.user.client.rpc.SerializationException;
import com.google.gwt.user.client.rpc.SerializationStreamReader;
import com.google.gwt.user.client.rpc.SerializationStreamWriter;
/**
* This class contains static utility methods for writing {@code Multiset} GWT
* field serializers. Serializers should delegate to
* {@link #serialize(SerializationStreamWriter, Multiset)} and to either
* {@link #instantiate(SerializationStreamReader, ImmutableMultiset.Builder)} or
* {@link #populate(SerializationStreamReader, Multiset)}.
*
* @author Chris Povirk
*/
final class Multiset_CustomFieldSerializerBase {
static ImmutableMultiset<Object> instantiate(
SerializationStreamReader reader,
ImmutableMultiset.Builder<Object> builder)
throws SerializationException {
int distinctElements = reader.readInt();
for (int i = 0; i < distinctElements; i++) {
Object element = reader.readObject();
int count = reader.readInt();
builder.addCopies(element, count);
}
return builder.build();
}
static Multiset<Object> populate(
SerializationStreamReader reader, Multiset<Object> multiset)
throws SerializationException {
int distinctElements = reader.readInt();
for (int i = 0; i < distinctElements; i++) {
Object element = reader.readObject();
int count = reader.readInt();
multiset.add(element, count);
}
return multiset;
}
static void serialize(SerializationStreamWriter writer, Multiset<?> instance)
throws SerializationException {
int entryCount = instance.entrySet().size();
writer.writeInt(entryCount);
for (Multiset.Entry<?> entry : instance.entrySet()) {
writer.writeObject(entry.getElement());
writer.writeInt(entry.getCount());
}
}
private Multiset_CustomFieldSerializerBase() {}
}
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