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 
  26 package jdk.internal.jshell.tool;
  27 
  28 import java.io.IOException;
  29 
  30 /**
  31  * Interface for defining user interaction with the shell.
  32  * @author Robert Field
  33  */
  34 abstract 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