IOContext.java revision 3062:15bdc18525ff 
1/*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package jdk.internal.jshell.tool;
27
28import java.io.IOException;
29
30/**
31 * Interface for defining user interaction with the shell.
32 * @author Robert Field
33 */
34abstract class IOContext implements AutoCloseable {
35
36    @Override
37    public abstract void close() throws IOException;
38
39    public abstract String readLine(String prompt, String prefix) throws IOException, InputInterruptedException;
40
41    public abstract boolean interactiveOutput();
42
43    public abstract Iterable<String> currentSessionHistory();
44
45    public abstract  boolean terminalEditorRunning();
46
47    public abstract void suspend();
48
49    public abstract void resume();
50
51    public abstract void beforeUserCode();
52
53    public abstract void afterUserCode();
54
55    public abstract void replaceLastHistoryEntry(String source);
56
57    class InputInterruptedException extends Exception {
58        private static final long serialVersionUID = 1L;
59    }
60}
61
62