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/*
* Copyright (C) 2007 The Android Open Source Project
*
* 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.android.dx.cf.iface;
import com.android.dx.util.FixedSizeList;
/**
* Standard implementation of {@link AttributeList}, which directly stores
* an array of {@link Attribute} objects and can be made immutable.
*/
public final class StdAttributeList extends FixedSizeList
implements AttributeList {
/**
* Constructs an instance. All indices initially contain {@code null}.
*
* @param size the size of the list
*/
public StdAttributeList(int size) {
super(size);
}
/** {@inheritDoc} */
public Attribute get(int n) {
return (Attribute) get0(n);
}
/** {@inheritDoc} */
public int byteLength() {
int sz = size();
int result = 2; // u2 attributes_count
for (int i = 0; i < sz; i++) {
result += get(i).byteLength();
}
return result;
}
/** {@inheritDoc} */
public Attribute findFirst(String name) {
int sz = size();
for (int i = 0; i < sz; i++) {
Attribute att = get(i);
if (att.getName().equals(name)) {
return att;
}
}
return null;
}
/** {@inheritDoc} */
public Attribute findNext(Attribute attrib) {
int sz = size();
int at;
outer: {
for (at = 0; at < sz; at++) {
Attribute att = get(at);
if (att == attrib) {
break outer;
}
}
return null;
}
String name = attrib.getName();
for (at++; at < sz; at++) {
Attribute att = get(at);
if (att.getName().equals(name)) {
return att;
}
}
return null;
}
/**
* Sets the attribute at the given index.
*
* @param n {@code >= 0, < size();} which attribute
* @param attribute {@code null-ok;} the attribute object
*/
public void set(int n, Attribute attribute) {
set0(n, attribute);
}
}
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