1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.dx.cf.iface;
18
19/**
20 * Interface for lists of fields.
21 */
22public interface FieldList
23{
24    /**
25     * Get whether this instance is mutable. Note that the
26     * {@code FieldList} interface itself doesn't provide any means
27     * of mutation, but that doesn't mean that there isn't a non-interface
28     * way of mutating an instance.
29     *
30     * @return {@code true} iff this instance is somehow mutable
31     */
32    public boolean isMutable();
33
34    /**
35     * Get the number of fields in the list.
36     *
37     * @return the size
38     */
39    public int size();
40
41    /**
42     * Get the {@code n}th field.
43     *
44     * @param n {@code n >= 0, n < size();} which field
45     * @return {@code non-null;} the field in question
46     */
47    public Field get(int n);
48}
49