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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/SimpleEventListener.java @ 19521:b5467bb34b24

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Truffle/Instrumentation: some variable renaming for clarity
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Thu, 19 Feb 2015 11:42:03 -0800
parents 128586040207
children
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1 /*
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2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.instrument.impl;
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27 import com.oracle.truffle.api.frame.*;
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28 import com.oracle.truffle.api.instrument.*;
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29 import com.oracle.truffle.api.nodes.*;
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30
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31 /**
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32 * An abstract listener for AST {@linkplain TruffleEventListener execution events} that ignores
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33 * return values and supports handling all events by overriding only two methods:
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34 * <ul>
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35 * <li>{@link #enter(Node, VirtualFrame)}, and</li>
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36 * <li>{@link #returnAny(Node, VirtualFrame)}.</li>
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37 * </ul>
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38 */
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39 public abstract class SimpleEventListener implements TruffleEventListener {
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40
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41 public void enter(Node node, VirtualFrame vFrame) {
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42 }
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43
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44 /**
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45 * Receive notification that one of an AST Node's execute methods has just returned by any
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46 * means: with or without a return value (ignored) or via exception (ignored).
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47 *
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48 * @param node
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49 * @param vFrame
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50 */
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51 public void returnAny(Node node, VirtualFrame vFrame) {
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52 }
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53
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54 public final void returnVoid(Node node, VirtualFrame vFrame) {
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55 returnAny(node, vFrame);
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56 }
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57
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58 public final void returnValue(Node node, VirtualFrame vFrame, Object result) {
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59 returnAny(node, vFrame);
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60 }
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61
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62 public final void returnExceptional(Node node, VirtualFrame vFrame, Exception e) {
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63 returnAny(node, vFrame);
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64 }
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65
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66 }