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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/CreateCastParser.java @ 22548:6b76a24fffbd default tip

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author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Thu, 14 Jan 2016 14:20:57 +0100
parents dc83cc1f94f2
children
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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.parser;
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24
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25 import com.oracle.truffle.api.dsl.CreateCast;
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26 import com.oracle.truffle.dsl.processor.ProcessorContext;
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27 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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28 import com.oracle.truffle.dsl.processor.model.CreateCastData;
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29 import com.oracle.truffle.dsl.processor.model.MethodSpec;
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30 import com.oracle.truffle.dsl.processor.model.NodeChildData;
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31 import com.oracle.truffle.dsl.processor.model.NodeData;
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32 import com.oracle.truffle.dsl.processor.model.ParameterSpec;
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33 import com.oracle.truffle.dsl.processor.model.TemplateMethod;
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34 import java.lang.annotation.Annotation;
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35 import java.util.List;
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36 import javax.lang.model.element.AnnotationMirror;
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37 import javax.lang.model.element.AnnotationValue;
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38 import javax.lang.model.element.ExecutableElement;
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39 import javax.lang.model.type.TypeMirror;
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41 public class CreateCastParser extends NodeMethodParser<CreateCastData> {
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43 public CreateCastParser(ProcessorContext context, NodeData operation) {
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44 super(context, operation);
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45 }
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46
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47 @Override
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48 public Class<? extends Annotation> getAnnotationType() {
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49 return CreateCast.class;
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50 }
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51
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52 @Override
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53 public MethodSpec createSpecification(ExecutableElement method, AnnotationMirror mirror) {
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54 List<String> childNames = ElementUtils.getAnnotationValueList(String.class, mirror, "value");
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55 NodeChildData foundChild = null;
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56 for (String childName : childNames) {
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57 foundChild = getNode().findChild(childName);
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58 if (foundChild != null) {
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59 break;
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60 }
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61 }
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62 TypeMirror baseType = getContext().getTruffleTypes().getNode();
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63 if (foundChild != null) {
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64 baseType = foundChild.getOriginalType();
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65 }
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66
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67 MethodSpec spec = new MethodSpec(new ParameterSpec("child", baseType));
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68 addDefaultFieldMethodSpec(spec);
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69 ParameterSpec childSpec = new ParameterSpec("castedChild", baseType);
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70 childSpec.setSignature(true);
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71 spec.addRequired(childSpec);
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72 return spec;
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73 }
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74
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75 @Override
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76 public CreateCastData create(TemplateMethod method, boolean invalid) {
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77 AnnotationMirror mirror = method.getMarkerAnnotation();
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78 List<String> childNames = ElementUtils.getAnnotationValueList(String.class, mirror, "value");
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79 CreateCastData cast = new CreateCastData(method, childNames);
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80 AnnotationValue value = ElementUtils.getAnnotationValue(mirror, "value");
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81 TypeMirror type = null;
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82 if (childNames == null || childNames.isEmpty()) {
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83 cast.addError(value, "No value specified but required.");
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84 return cast;
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85 }
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87 for (String childName : childNames) {
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88 NodeChildData child = getNode().findChild(childName);
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89 if (child == null) {
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90 // error
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91 cast.addError(value, "Specified child '%s' not found.", childName);
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92 continue;
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93 }
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94 if (type == null) {
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95 type = child.getNodeType();
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96 } else if (!ElementUtils.typeEquals(type, child.getNodeType())) {
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97 cast.addError(value, "All child nodes for a cast must have the same node type.");
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98 continue;
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99 }
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100 }
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101 return cast;
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102 }
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103
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104 }