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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/access/SLReadPropertyNode.java @ 18412:997bc9764a9a

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SL: use the truffle object storage model to represent SL objects
author Andreas Woess <andreas.woess@jku.at>
date Tue, 18 Nov 2014 12:08:51 +0100
parents dc2e000bed40
children 73211b2c7c7a
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1 /*
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2 * Copyright (c) 2013, 2014, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.sl.nodes.access;
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24
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25 import com.oracle.truffle.api.frame.*;
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26 import com.oracle.truffle.api.nodes.*;
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27 import com.oracle.truffle.api.source.*;
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28 import com.oracle.truffle.api.utilities.*;
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29 import com.oracle.truffle.sl.*;
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30 import com.oracle.truffle.sl.nodes.*;
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31 import com.oracle.truffle.sl.runtime.*;
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32
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33 /**
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34 * The node for accessing a property of an object. When executed, this node first evaluates the
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35 * object expression on the left side of the dot operator and then reads the named property.
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36 */
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37 @NodeInfo(shortName = ".")
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38 public final class SLReadPropertyNode extends SLExpressionNode {
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39
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40 public static SLReadPropertyNode create(SourceSection src, SLExpressionNode receiverNode, String propertyName) {
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41 return new SLReadPropertyNode(src, receiverNode, propertyName);
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42 }
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43
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44 @Child protected SLExpressionNode receiverNode;
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45 protected final String propertyName;
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46 @Child protected SLReadPropertyCacheNode cacheNode;
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47 private final ConditionProfile receiverTypeCondition = ConditionProfile.createBinaryProfile();
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48
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49 private SLReadPropertyNode(SourceSection src, SLExpressionNode receiverNode, String propertyName) {
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50 super(src);
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51 this.receiverNode = receiverNode;
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52 this.propertyName = propertyName;
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53 this.cacheNode = SLReadPropertyCacheNode.create(propertyName);
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54 }
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55
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56 @Override
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57 public Object executeGeneric(VirtualFrame frame) {
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58 Object object = receiverNode.executeGeneric(frame);
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59 if (receiverTypeCondition.profile(SLContext.isSLObject(object))) {
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60 return cacheNode.executeObject(SLContext.castSLObject(object));
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61 } else {
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62 throw new SLException("unexpected receiver type");
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63 }
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64 }
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65 }