001/*
002 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.truffle.nodes.asserts;
024
025import com.oracle.graal.compiler.common.type.*;
026import com.oracle.graal.graph.*;
027import com.oracle.graal.nodeinfo.*;
028import com.oracle.graal.nodes.*;
029import com.oracle.graal.nodes.util.*;
030
031@NodeInfo
032public final class NeverPartOfCompilationNode extends ControlSinkNode implements StateSplit, IterableNodeType {
033
034    public static final NodeClass<NeverPartOfCompilationNode> TYPE = NodeClass.create(NeverPartOfCompilationNode.class);
035    protected final String message;
036    @OptionalInput(InputType.State) protected FrameState stateAfter;
037
038    public NeverPartOfCompilationNode(String message) {
039        super(TYPE, StampFactory.forVoid());
040        this.message = message;
041    }
042
043    public String getMessage() {
044        return message;
045    }
046
047    public FrameState stateAfter() {
048        return stateAfter;
049    }
050
051    public void setStateAfter(FrameState x) {
052        assert x == null || x.isAlive() : "frame state must be in a graph";
053        updateUsages(stateAfter, x);
054        stateAfter = x;
055    }
056
057    public boolean hasSideEffect() {
058        return true;
059    }
060
061    public static void verifyNotFoundIn(final StructuredGraph graph) {
062        for (NeverPartOfCompilationNode neverPartOfCompilationNode : graph.getNodes(NeverPartOfCompilationNode.TYPE)) {
063            Throwable exception = new VerificationError(neverPartOfCompilationNode.getMessage());
064            throw GraphUtil.approxSourceException(neverPartOfCompilationNode, exception);
065        }
066    }
067}