Mercurial > hg > truffle

comparison truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/AbstractParser.java @ 21951:9c8c0937da41

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Moving all sources into truffle subdirectory
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 17 Jun 2015 10:58:08 +0200
parents graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/AbstractParser.java@13cf9b6b325c
children dc83cc1f94f2
comparison
equal deleted inserted replaced
21950:2a5011c7e641 21951:9c8c0937da41
1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.truffle.dsl.processor.parser;
24
25 import java.lang.annotation.*;
26 import java.util.*;
27
28 import javax.annotation.processing.*;
29 import javax.lang.model.element.*;
30 import javax.tools.Diagnostic.Kind;
31
32 import com.oracle.truffle.dsl.processor.*;
33 import com.oracle.truffle.dsl.processor.java.*;
34 import com.oracle.truffle.dsl.processor.model.*;
35 import com.oracle.truffle.dsl.processor.model.MessageContainer.Message;
36
37 /**
38 * THIS IS NOT PUBLIC API.
39 */
40 public abstract class AbstractParser<M extends MessageContainer> {
41
42 protected final ProcessorContext context;
43 protected final ProcessingEnvironment processingEnv;
44
45 protected final Log log;
46
47 public AbstractParser() {
48 this.context = ProcessorContext.getInstance();
49 this.processingEnv = context.getEnvironment();
50 this.log = context.getLog();
51 }
52
53 public final M parse(Element element) {
54 M model = null;
55 try {
56 AnnotationMirror mirror = null;
57 if (getAnnotationType() != null) {
58 mirror = ElementUtils.findAnnotationMirror(processingEnv, element.getAnnotationMirrors(), getAnnotationType());
59 }
60
61 if (!context.getTruffleTypes().verify(context, element, mirror)) {
62 return null;
63 }
64 model = parse(element, mirror);
65 if (model == null) {
66 return null;
67 }
68
69 redirectMessages(new HashSet<MessageContainer>(), model, model);
70 model.emitMessages(context, log);
71 return filterErrorElements(model);
72 } catch (CompileErrorException e) {
73 log.message(Kind.WARNING, element, null, null, "The truffle processor could not parse class due to error: %s", e.getMessage());
74 return null;
75 }
76 }
77
78 private void redirectMessages(Set<MessageContainer> visitedSinks, MessageContainer model, MessageContainer baseContainer) {
79 List<Message> messages = model.getMessages();
80 for (int i = messages.size() - 1; i >= 0; i--) {
81 Message message = messages.get(i);
82 if (!ElementUtils.isEnclosedIn(baseContainer.getMessageElement(), message.getOriginalContainer().getMessageElement())) {
83 // redirect message
84 MessageContainer original = message.getOriginalContainer();
85 String text = wrapText(original.getMessageElement(), original.getMessageAnnotation(), message.getText());
86 Message redirectedMessage = new Message(null, null, baseContainer, text, message.getKind());
87 model.getMessages().remove(i);
88 baseContainer.getMessages().add(redirectedMessage);
89 }
90 }
91
92 for (MessageContainer childContainer : model) {
93 if (visitedSinks.contains(childContainer)) {
94 continue;
95 }
96 visitedSinks.add(childContainer);
97
98 MessageContainer newBase = baseContainer;
99 if (childContainer.getBaseContainer() != null) {
100 newBase = childContainer.getBaseContainer();
101 }
102 redirectMessages(visitedSinks, childContainer, newBase);
103 }
104 }
105
106 private static String wrapText(Element element, AnnotationMirror mirror, String text) {
107 StringBuilder b = new StringBuilder();
108 if (element != null) {
109 if (element.getKind() == ElementKind.METHOD) {
110 b.append("Method " + ElementUtils.createReferenceName((ExecutableElement) element));
111 } else {
112 b.append("Element " + element.getSimpleName());
113 }
114 }
115 if (mirror != null) {
116 b.append(" at annotation @" + ElementUtils.getSimpleName(mirror.getAnnotationType()).trim());
117 }
118
119 if (b.length() > 0) {
120 b.append(" is erroneous: ").append(text);
121 return b.toString();
122 } else {
123 return text;
124 }
125 }
126
127 protected M filterErrorElements(M model) {
128 return model.hasErrors() ? null : model;
129 }
130
131 protected abstract M parse(Element element, AnnotationMirror mirror);
132
133 public abstract Class<? extends Annotation> getAnnotationType();
134
135 public boolean isDelegateToRootDeclaredType() {
136 return false;
137 }
138
139 public List<Class<? extends Annotation>> getAllAnnotationTypes() {
140 List<Class<? extends Annotation>> list = new ArrayList<>();
141 if (getAnnotationType() != null) {
142 list.add(getAnnotationType());
143 }
144 list.addAll(getTypeDelegatedAnnotationTypes());
145 return list;
146 }
147
148 public List<Class<? extends Annotation>> getTypeDelegatedAnnotationTypes() {
149 return Collections.emptyList();
150 }
151
152 }