--- a/truffle/com.oracle.truffle.tools.debug.shell/src/com/oracle/truffle/tools/debug/shell/server/REPLServerContext.java	Wed Nov 11 15:59:56 2015 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,144 +0,0 @@
-/*
- * 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
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-package com.oracle.truffle.tools.debug.shell.server;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-import com.oracle.truffle.api.debug.Breakpoint;
-import com.oracle.truffle.api.debug.Debugger;
-import com.oracle.truffle.api.debug.SuspendedEvent;
-import com.oracle.truffle.api.frame.FrameInstance;
-import com.oracle.truffle.api.frame.MaterializedFrame;
-import com.oracle.truffle.api.instrument.Visualizer;
-import com.oracle.truffle.api.instrument.impl.DefaultVisualizer;
-import com.oracle.truffle.api.nodes.Node;
-import com.oracle.truffle.api.vm.PolyglotEngine;
-import com.oracle.truffle.api.vm.PolyglotEngine.Language;
-import com.oracle.truffle.tools.debug.shell.REPLMessage;
-
-public abstract class REPLServerContext {
-
-    private final int level;
-    private final SuspendedEvent event;
-
-    protected REPLServerContext(int level, SuspendedEvent event) {
-        this.level = level;
-        this.event = event;
-    }
-
-    /**
-     * The nesting depth of this context in the current session.
-     */
-    public int getLevel() {
-        return level;
-    }
-
-    /**
-     * The AST node where execution is halted in this context.
-     */
-    public Node getNodeAtHalt() {
-        return event.getNode();
-    }
-
-    /**
-     * Evaluates given code snippet in the context of currently suspended execution.
-     *
-     * @param code the snippet to evaluate
-     * @param frame <code>null</code> in case the evaluation should happen in top most frame,
-     *            non-null value
-     * @return result of the evaluation
-     * @throws IOException if something goes wrong
-     */
-    // public Object eval(String code, FrameInstance frame) throws IOException {
-    // return event.eval(code, frame);
-    // }
-
-    /**
-     * The frame where execution is halted in this context.
-     */
-    public MaterializedFrame getFrameAtHalt() {
-        return event.getFrame();
-    }
-
-    public abstract Language getLanguage();
-
-    public Visualizer getVisualizer() {
-        return new DefaultVisualizer();
-    }
-
-    public PolyglotEngine engine() {
-        throw new IllegalStateException();
-    }
-
-    protected abstract Debugger db();
-
-    /**
-     * Dispatches a REPL request to the appropriate handler.
-     */
-    public abstract REPLMessage[] receive(REPLMessage request);
-
-    public abstract void registerBreakpoint(Breakpoint breakpoint);
-
-    public abstract Breakpoint findBreakpoint(int id);
-
-    public abstract int getBreakpointID(Breakpoint breakpoint);
-
-    /**
-     * Provides access to the execution stack.
-     *
-     * @return immutable list of stack elements
-     */
-    public List<FrameDebugDescription> getStack() {
-        List<FrameDebugDescription> frames = new ArrayList<>();
-        int frameCount = 1;
-        for (FrameInstance frameInstance : event.getStack()) {
-            if (frameCount == 1) {
-                frames.add(new FrameDebugDescription(frameCount, event.getNode(), frameInstance));
-            } else {
-                frames.add(new FrameDebugDescription(frameCount, frameInstance.getCallNode(), frameInstance));
-            }
-            frameCount++;
-        }
-        return Collections.unmodifiableList(frames);
-    }
-
-    void prepareStepOut() {
-        event.prepareStepOut();
-    }
-
-    void prepareStepInto(int repeat) {
-        event.prepareStepInto(repeat);
-    }
-
-    void prepareStepOver(int repeat) {
-        event.prepareStepOver(repeat);
-    }
-
-    void prepareContinue() {
-        event.prepareContinue();
-    }
-}