// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protobuf;
import java.util.
AbstractList;
import java.util.
Collection;
import java.util.
Collections;
import java.util.
Iterator;
import java.util.
List;
import java.util.
ListIterator;
import java.util.
RandomAccess;
/**
* An implementation of {@link LazyStringList} that wraps another
* {@link LazyStringList} such that it cannot be modified via the wrapper.
*
* @author jonp@google.com (Jon Perlow)
*/
public class
UnmodifiableLazyStringList extends
AbstractList<
String>
implements
LazyStringList,
RandomAccess {
private final
LazyStringList list;
public
UnmodifiableLazyStringList(
LazyStringList list) {
this.
list =
list;
}
@
Override
public
String get(int
index) {
return
list.
get(
index);
}
@
Override
public
Object getRaw(int
index) {
return
list.
getRaw(
index);
}
@
Override
public int
size() {
return
list.
size();
}
@
Override
public
ByteString getByteString(int
index) {
return
list.
getByteString(
index);
}
@
Override
public void
add(
ByteString element) {
throw new
UnsupportedOperationException();
}
@
Override
public void
set(int
index,
ByteString element) {
throw new
UnsupportedOperationException();
}
@
Override
public boolean
addAllByteString(
Collection<? extends
ByteString>
element) {
throw new
UnsupportedOperationException();
}
@
Override
public byte[]
getByteArray(int
index) {
return
list.
getByteArray(
index);
}
@
Override
public void
add(byte[]
element) {
throw new
UnsupportedOperationException();
}
@
Override
public void
set(int
index, byte[]
element) {
throw new
UnsupportedOperationException();
}
@
Override
public boolean
addAllByteArray(
Collection<byte[]>
element) {
throw new
UnsupportedOperationException();
}
@
Override
public
ListIterator<
String>
listIterator(final int
index) {
return new
ListIterator<
String>() {
ListIterator<
String>
iter =
list.
listIterator(
index);
@
Override
public boolean
hasNext() {
return
iter.
hasNext();
}
@
Override
public
String next() {
return
iter.
next();
}
@
Override
public boolean
hasPrevious() {
return
iter.
hasPrevious();
}
@
Override
public
String previous() {
return
iter.
previous();
}
@
Override
public int
nextIndex() {
return
iter.
nextIndex();
}
@
Override
public int
previousIndex() {
return
iter.
previousIndex();
}
@
Override
public void
remove() {
throw new
UnsupportedOperationException();
}
@
Override
public void
set(
String o) {
throw new
UnsupportedOperationException();
}
@
Override
public void
add(
String o) {
throw new
UnsupportedOperationException();
}
};
}
@
Override
public
Iterator<
String>
iterator() {
return new
Iterator<
String>() {
Iterator<
String>
iter =
list.
iterator();
@
Override
public boolean
hasNext() {
return
iter.
hasNext();
}
@
Override
public
String next() {
return
iter.
next();
}
@
Override
public void
remove() {
throw new
UnsupportedOperationException();
}
};
}
@
Override
public
List<?>
getUnderlyingElements() {
// The returned value is already unmodifiable.
return
list.
getUnderlyingElements();
}
@
Override
public void
mergeFrom(
LazyStringList other) {
throw new
UnsupportedOperationException();
}
@
Override
public
List<byte[]>
asByteArrayList() {
return
Collections.
unmodifiableList(
list.
asByteArrayList());
}
@
Override
public
List<
ByteString>
asByteStringList() {
return
Collections.
unmodifiableList(
list.
asByteStringList());
}
@
Override
public
LazyStringList getUnmodifiableView() {
return this;
}
}