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 * Copyright (c) 2017, 2020, 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 com.oracle.truffle.tools.chromeinspector;

import java.util.concurrent.atomic.AtomicReference;

import com.oracle.truffle.api.debug.DebugValue;
import com.oracle.truffle.api.debug.SuspendedEvent;

import com.oracle.truffle.tools.chromeinspector.domains.DebuggerDomain;
import com.oracle.truffle.tools.chromeinspector.domains.RuntimeDomain;
import com.oracle.truffle.tools.chromeinspector.types.CallArgument;
import com.oracle.truffle.tools.chromeinspector.types.CallFrame;
import com.oracle.truffle.tools.chromeinspector.types.RemoteObject;

import org.graalvm.collections.Pair;

final class DebuggerSuspendedInfo {

    private final InspectorDebugger debugger;
    private final SuspendedEvent se;
    private volatile CallFrame[] callFrames;
    
Holder of the last evaluated value, if any. It's expected to be used for non replicable values, while assuming that DebuggerDomain.setVariableValue(int, String, CallArgument, String) is called after RuntimeDomain.evaluate(String, String, boolean, boolean, int, boolean, boolean, boolean) /**
     * Holder of the last evaluated value, if any. It's expected to be used for non
     * {@link RemoteObject#isReplicable() replicable} values, while assuming that
     * {@link DebuggerDomain#setVariableValue(int, String, CallArgument, String)} is called after
     * {@link RuntimeDomain#evaluate(String, String, boolean, boolean, int, boolean, boolean, boolean)}
     */
    final AtomicReference<Pair<DebugValue, Object>> lastEvaluatedValue = new AtomicReference<>();

    DebuggerSuspendedInfo(InspectorDebugger debugger, SuspendedEvent se, CallFrame[] callFrames) {
        this.debugger = debugger;
        this.se = se;
        this.callFrames = callFrames;
    }

    public SuspendedEvent getSuspendedEvent() {
        return se;
    }

    public CallFrame[] getCallFrames() {
        return callFrames;
    }

    void refreshFrames() {
        this.callFrames = debugger.refreshCallFrames(se.getStackFrames(), se.getSuspendAnchor(), callFrames);
    }
}