Mercurial > hg > graal-jvmci-8
view graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ProbeFailure.java @ 21554:b1530a6cce8c
renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 26 May 2015 23:21:15 +0200 |
parents | 5b7db8941fd7 |
children |
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/* * 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.api.instrument; import com.oracle.truffle.api.instrument.ProbeNode.WrapperNode; import com.oracle.truffle.api.nodes.*; /** * Description of a failed attempt to instrument an AST node. */ public final class ProbeFailure { public enum Reason { /** * Node to be probed has no parent. */ NO_PARENT("Node to be probed has no parent"), /** * The node to be probed is a wrapper. */ WRAPPER_NODE("The node to be probed is a wrapper"), /** * The node to be probed returned {@link Node#isInstrumentable()}{@code == false}. */ NOT_INSTRUMENTABLE("The node to be project is \"not instrumentable\""), /** * No wrapper could be created that is also a {@link Node}. */ NO_WRAPPER("No wrapper could be created"), /** * Wrapper not assignable to the parent's child field. */ WRAPPER_TYPE("Wrapper not assignable to parent's child field"); final String message; private Reason(String message) { this.message = message; } public String getMessage() { return message; } } private final Reason reason; private final Node parent; private final Node child; private final Object wrapper; /** * Description of an internal failure of {@link Node#probe()}. * * @param reason what caused the failure * @param parent the parent, if known, of the child being probed * @param child this child being probed * @param wrapper the {@link WrapperNode} created to implement the probe */ public ProbeFailure(Reason reason, Node parent, Node child, Object wrapper) { this.reason = reason; this.parent = parent; this.child = child; this.wrapper = wrapper; } /** * @return a short explanation of the failure */ public Reason getReason() { return reason; } /** * @return the parent, if any, of the node being probed */ public Node getParent() { return parent; } /** * @return the node being probed */ public Node getChild() { return child; } /** * @return the {@link WrapperNode} created for the probe attempt */ public Object getWrapper() { return wrapper; } public String getMessage() { final StringBuilder sb = new StringBuilder(reason.message + ": "); if (parent != null) { sb.append("parent=" + parent.getClass().getSimpleName() + " "); if (child != null) { sb.append("child=" + child.getClass().getSimpleName() + " "); final NodeFieldAccessor field = NodeUtil.findChildField(parent, child); if (field != null) { sb.append("field=" + field.getName() + " "); } } } if (wrapper != null) { sb.append("wrapper=" + wrapper.getClass().getSimpleName()); } return sb.toString(); } }