/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package jdk.internal.jshell.tool;

import java.io.IOException;

/**

 * Interface for defining user interaction with the shell.

 * @author Robert Field

 */

abstract class IOContext implements AutoCloseable {

    @Override

    public abstract void close() throws IOException;

    public abstract String readLine(String prompt, String prefix) throws IOException, InputInterruptedException;

    public abstract boolean interactiveOutput();

    public abstract Iterable<String> currentSessionHistory();

    public abstract  boolean terminalEditorRunning();

    public abstract void suspend();

    public abstract void resume();

    public abstract void beforeUserCode();

    public abstract void afterUserCode();

    public abstract void replaceLastHistoryEntry(String source);

    public abstract int readUserInput() throws IOException;

    class InputInterruptedException extends Exception {

        private static final long serialVersionUID = 1L;

    }

}