mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-07-31 06:29:45 +00:00
127 lines
3.4 KiB
Java
127 lines
3.4 KiB
Java
/*
|
|
* ====================================================================
|
|
* Licensed to the Apache Software Foundation (ASF) under one
|
|
* or more contributor license agreements. See the NOTICE file
|
|
* distributed with this work for additional information
|
|
* regarding copyright ownership. The ASF licenses this file
|
|
* to you 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.
|
|
* ====================================================================
|
|
*
|
|
* This software consists of voluntary contributions made by many
|
|
* individuals on behalf of the Apache Software Foundation. For more
|
|
* information on the Apache Software Foundation, please see
|
|
* <http://www.apache.org/>.
|
|
*
|
|
*/
|
|
|
|
package ch.boye.httpclientandroidlib.protocol;
|
|
|
|
import java.util.Collection;
|
|
import java.util.HashMap;
|
|
import java.util.LinkedList;
|
|
import java.util.Map;
|
|
|
|
import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
|
|
|
|
/**
|
|
* Builder class to build a linked list (chain) of unique class instances. Each class can have
|
|
* only one instance in the list. Useful for building lists of protocol interceptors.
|
|
*
|
|
* @see ImmutableHttpProcessor
|
|
*
|
|
* @since 4.3
|
|
*/
|
|
@NotThreadSafe
|
|
final class ChainBuilder<E> {
|
|
|
|
private final LinkedList<E> list;
|
|
private final Map<Class<?>, E> uniqueClasses;
|
|
|
|
public ChainBuilder() {
|
|
this.list = new LinkedList<E>();
|
|
this.uniqueClasses = new HashMap<Class<?>, E>();
|
|
}
|
|
|
|
private void ensureUnique(final E e) {
|
|
final E previous = this.uniqueClasses.remove(e.getClass());
|
|
if (previous != null) {
|
|
this.list.remove(previous);
|
|
}
|
|
this.uniqueClasses.put(e.getClass(), e);
|
|
}
|
|
|
|
public ChainBuilder<E> addFirst(final E e) {
|
|
if (e == null) {
|
|
return this;
|
|
}
|
|
ensureUnique(e);
|
|
this.list.addFirst(e);
|
|
return this;
|
|
}
|
|
|
|
public ChainBuilder<E> addLast(final E e) {
|
|
if (e == null) {
|
|
return this;
|
|
}
|
|
ensureUnique(e);
|
|
this.list.addLast(e);
|
|
return this;
|
|
}
|
|
|
|
public ChainBuilder<E> addAllFirst(final Collection<E> c) {
|
|
if (c == null) {
|
|
return this;
|
|
}
|
|
for (final E e: c) {
|
|
addFirst(e);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
public ChainBuilder<E> addAllFirst(final E... c) {
|
|
if (c == null) {
|
|
return this;
|
|
}
|
|
for (final E e: c) {
|
|
addFirst(e);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
public ChainBuilder<E> addAllLast(final Collection<E> c) {
|
|
if (c == null) {
|
|
return this;
|
|
}
|
|
for (final E e: c) {
|
|
addLast(e);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
public ChainBuilder<E> addAllLast(final E... c) {
|
|
if (c == null) {
|
|
return this;
|
|
}
|
|
for (final E e: c) {
|
|
addLast(e);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
public LinkedList<E> build() {
|
|
return new LinkedList<E>(this.list);
|
|
}
|
|
|
|
}
|