Mercurial > hg > truffle
annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/access/SLWritePropertyNode.java @ 18411:dc2e000bed40
SL: add basic support for creating objects and accessing properties
author | Andreas Woess <andreas.woess@jku.at> |
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date | Tue, 18 Nov 2014 23:02:58 +0100 |
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children | 997bc9764a9a |
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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 java.util.*; |
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26 |
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27 import com.oracle.truffle.api.frame.*; |
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28 import com.oracle.truffle.api.nodes.*; |
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29 import com.oracle.truffle.api.source.*; |
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30 import com.oracle.truffle.sl.*; |
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31 import com.oracle.truffle.sl.nodes.*; |
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32 |
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33 /** |
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34 * The node for setting a property of an object. When executed, this node first evaluates the value |
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35 * expression on the right hand side of the equals operator, followed by the object expression on |
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36 * the left side of the dot operator, and then sets the named property of this object to the new |
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37 * value if the property already exists or adds a new property. Finally, it returns the new value. |
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38 */ |
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39 @NodeInfo(shortName = ".=") |
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40 public final class SLWritePropertyNode extends SLExpressionNode { |
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41 |
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42 public static SLWritePropertyNode create(SourceSection src, SLExpressionNode receiverNode, String propertyName, SLExpressionNode valueNode) { |
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43 return new SLWritePropertyNode(src, receiverNode, propertyName, valueNode); |
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44 } |
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45 |
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46 @Child protected SLExpressionNode receiverNode; |
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47 protected final String propertyName; |
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48 @Child protected SLExpressionNode valueNode; |
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49 |
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50 private SLWritePropertyNode(SourceSection src, SLExpressionNode receiverNode, String propertyName, SLExpressionNode valueNode) { |
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51 super(src); |
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52 this.receiverNode = receiverNode; |
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53 this.propertyName = propertyName; |
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54 this.valueNode = valueNode; |
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55 } |
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56 |
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57 @SuppressWarnings("unchecked") |
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58 @Override |
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59 public Object executeGeneric(VirtualFrame frame) { |
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60 Object value = valueNode.executeGeneric(frame); |
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61 Object object = receiverNode.executeGeneric(frame); |
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62 if (object instanceof Map) { |
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63 ((Map<Object, Object>) object).put(propertyName, value); |
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64 } else { |
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65 throw new SLException("unexpected receiver type"); |
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66 } |
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67 return value; |
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68 } |
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69 } |