| /* |
| * 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.jack.dx.rop.annotation; |
| |
| import com.android.jack.dx.util.FixedSizeList; |
| |
| /** |
| * List of {@link Annotations} instances. |
| */ |
| public final class AnnotationsList extends FixedSizeList { |
| /** {@code non-null;} immutable empty instance */ |
| public static final AnnotationsList EMPTY = new AnnotationsList(0); |
| |
| /** |
| * Constructs an immutable instance which is the combination of |
| * the two given instances. The two instances must each have the |
| * same number of elements, and each pair of elements must contain |
| * disjoint sets of types. |
| * |
| * @param list1 {@code non-null;} an instance |
| * @param list2 {@code non-null;} the other instance |
| * @return {@code non-null;} the combination |
| */ |
| public static AnnotationsList combine(AnnotationsList list1, AnnotationsList list2) { |
| int size = list1.size(); |
| |
| if (size != list2.size()) { |
| throw new IllegalArgumentException("list1.size() != list2.size()"); |
| } |
| |
| AnnotationsList result = new AnnotationsList(size); |
| |
| for (int i = 0; i < size; i++) { |
| Annotations a1 = list1.get(i); |
| Annotations a2 = list2.get(i); |
| result.set(i, Annotations.combine(a1, a2)); |
| } |
| |
| result.setImmutable(); |
| return result; |
| } |
| |
| /** |
| * Constructs an instance. All indices initially contain {@code null}. |
| * |
| * @param size the size of the list |
| */ |
| public AnnotationsList(int size) { |
| super(size); |
| } |
| |
| /** |
| * Gets the element at the given index. It is an error to call |
| * this with the index for an element which was never set; if you |
| * do that, this will throw {@code NullPointerException}. |
| * |
| * @param n {@code >= 0, < size();} which index |
| * @return {@code non-null;} element at that index |
| */ |
| public Annotations get(int n) { |
| return (Annotations) get0(n); |
| } |
| |
| /** |
| * Sets the element at the given index. The given element must be |
| * immutable. |
| * |
| * @param n {@code >= 0, < size();} which index |
| * @param a {@code null-ok;} the element to set at {@code n} |
| */ |
| public void set(int n, Annotations a) { |
| a.throwIfMutable(); |
| set0(n, a); |
| } |
| } |