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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/local/SLWriteLocalVariableNode.java @ 13821:b16ec83edc73

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Documentation and more refactoring of Simple Language
author Christian Wimmer <christian.wimmer@oracle.com>
date Wed, 29 Jan 2014 20:45:43 -0800
parents graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/local/WriteLocalNode.java@7c418666c6c9
children 64c77f0577bb
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1 /*
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2 * Copyright (c) 2012, 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.local;
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24
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25 import com.oracle.truffle.api.*;
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26 import com.oracle.truffle.api.dsl.*;
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27 import com.oracle.truffle.api.frame.*;
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28 import com.oracle.truffle.sl.nodes.*;
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29
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30 @NodeChild(value = "valueNode")
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31 @NodeField(name = "slot", type = FrameSlot.class)
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32 public abstract class SLWriteLocalVariableNode extends SLExpressionNode {
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33
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34 protected abstract FrameSlot getSlot();
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35
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36 @Specialization(guards = "isLongKind")
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37 protected long write(VirtualFrame frame, long value) {
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38 frame.setLong(getSlot(), value);
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39 return value;
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40 }
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41
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42 @Specialization(guards = "isBooleanKind")
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43 protected boolean write(VirtualFrame frame, boolean value) {
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44 frame.setBoolean(getSlot(), value);
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45 return value;
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46 }
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47
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48 @Specialization
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49 protected Object write(VirtualFrame frame, Object value) {
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50 if (getSlot().getKind() != FrameSlotKind.Object) {
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51 CompilerDirectives.transferToInterpreterAndInvalidate();
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52 getSlot().setKind(FrameSlotKind.Object);
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53 }
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54 frame.setObject(getSlot(), value);
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55 return value;
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56 }
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57
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58 protected boolean isLongKind() {
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59 return isKind(FrameSlotKind.Long);
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60 }
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61
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62 protected boolean isBooleanKind() {
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63 return isKind(FrameSlotKind.Boolean);
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64 }
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65
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66 private boolean isKind(FrameSlotKind kind) {
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67 if (getSlot().getKind() == kind) {
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68 return true;
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69 } else if (getSlot().getKind() == FrameSlotKind.Illegal) {
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70 CompilerDirectives.transferToInterpreterAndInvalidate();
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71 getSlot().setKind(kind);
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72 return true;
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73 } else {
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74 return false;
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75 }
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76 }
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77 }