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 
17 package com.android.dx.io.instructions;
18 
19 import java.io.EOFException;
20 
21 /**
22  * Input stream of code units, for reading in Dalvik bytecode.
23  */
24 public 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      */
hasMore()29     public boolean hasMore();
30 
31     /**
32      * Reads a code unit.
33      */
read()34     public int read() throws EOFException;
35 
36     /**
37      * Reads two code units, treating them as a little-endian {@code int}.
38      */
readInt()39     public int readInt() throws EOFException;
40 
41     /**
42      * Reads four code units, treating them as a little-endian {@code long}.
43      */
readLong()44     public long readLong() throws EOFException;
45 }
46