CodeInput.java revision 579d7739c53a2707ad711a2d2cae46d7d782f061 
1/*
2 * Copyright (C) 2011 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.io.instructions;
18
19import java.io.EOFException;
20
21/**
22 * Input stream of code units, for reading in Dalvik bytecode.
23 */
24public interface CodeInput extends CodeCursor {
25    /**
26     * Returns whether there are any more code units to read. This
27     * is analogous to {@code hasNext()} on an interator.
28     */
29    public boolean hasMore();
30
31    /**
32     * Reads a code unit.
33     */
34    public int read() throws EOFException;
35
36    /**
37     * Reads two code units, treating them as a little-endian {@code int}.
38     */
39    public int readInt() throws EOFException;
40
41    /**
42     * Reads four code units, treating them as a little-endian {@code long}.
43     */
44    public long readLong() throws EOFException;
45}
46