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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/GuardExpression.java @ 21557:31fc2fce38f3
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author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 27 May 2015 13:32:18 +0200 |
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1 /* |
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2 * Copyright (c) 2012, 2012, 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.dsl.processor.model; |
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24 |
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25 import java.util.*; |
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26 |
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27 import javax.lang.model.element.*; |
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28 |
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29 import com.oracle.truffle.dsl.processor.expression.*; |
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30 import com.oracle.truffle.dsl.processor.expression.DSLExpression.Negate; |
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31 import com.oracle.truffle.dsl.processor.java.*; |
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32 |
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33 public final class GuardExpression extends MessageContainer { |
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34 |
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35 private final TemplateMethod source; |
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36 private final DSLExpression expression; |
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37 |
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38 public GuardExpression(TemplateMethod source, DSLExpression expression) { |
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39 this.source = source; |
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40 this.expression = expression; |
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41 } |
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42 |
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43 @Override |
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44 public Element getMessageElement() { |
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45 return source.getMessageElement(); |
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46 } |
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47 |
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48 @Override |
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49 public AnnotationMirror getMessageAnnotation() { |
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50 return source.getMessageAnnotation(); |
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51 } |
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52 |
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53 @Override |
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54 public AnnotationValue getMessageAnnotationValue() { |
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55 return ElementUtils.getAnnotationValue(getMessageAnnotation(), "guards"); |
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56 } |
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57 |
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58 public DSLExpression getExpression() { |
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59 return expression; |
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60 } |
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61 |
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62 public boolean equalsNegated(GuardExpression other) { |
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63 boolean negated = false; |
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64 DSLExpression thisExpression = expression; |
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65 if (thisExpression instanceof Negate) { |
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66 negated = true; |
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67 thisExpression = ((Negate) thisExpression).getReceiver(); |
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68 } |
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69 |
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70 boolean otherNegated = false; |
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71 DSLExpression otherExpression = other.expression; |
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72 if (otherExpression instanceof Negate) { |
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73 otherNegated = true; |
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74 otherExpression = ((Negate) otherExpression).getReceiver(); |
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75 } |
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76 return Objects.equals(thisExpression, otherExpression) && negated != otherNegated; |
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77 } |
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78 |
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79 public boolean implies(GuardExpression other) { |
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80 if (Objects.equals(expression, other.expression)) { |
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81 return true; |
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82 } |
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83 return false; |
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84 } |
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85 |
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86 } |