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comparison graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/ast/CodeElement.java @ 7291:a748e4d44694

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Truffle API to specify type-specalized Node classes; annotation processor for automatic code generation of the type-specialized Node classes during the build process
author Christian Humer <christian.humer@gmail.com>
date Fri, 21 Dec 2012 10:44:31 -0800
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children 6343a09b2ec1
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7290:a81db08fe930 7291:a748e4d44694
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.codegen.processor.ast;
24
25 import java.io.*;
26 import java.lang.annotation.*;
27 import java.util.*;
28
29 import javax.lang.model.element.*;
30
31 import com.oracle.truffle.codegen.processor.api.element.*;
32 import com.oracle.truffle.codegen.processor.codewriter.*;
33
34 public abstract class CodeElement<E extends Element> implements WritableElement, GeneratedElement {
35
36 private final Set<Modifier> modifiers;
37 private List<AnnotationMirror> annotations;
38 private List<E> enclosedElements;
39
40 private Element enclosingElement;
41
42 private Element generatorElement;
43 private AnnotationMirror generatorAnnotationMirror;
44
45 public CodeElement() {
46 this.modifiers = new LinkedHashSet<>();
47 }
48
49
50 @Override
51 public void setGeneratorAnnotationMirror(AnnotationMirror mirror) {
52 this.generatorAnnotationMirror = mirror;
53 }
54
55 @Override
56 public void setGeneratorElement(Element element) {
57 this.generatorElement = element;
58 }
59
60 @Override
61 public AnnotationMirror getGeneratorAnnotationMirror() {
62 return generatorAnnotationMirror;
63 }
64
65 @Override
66 public Element getGeneratorElement() {
67 return generatorElement;
68 }
69
70 public CodeElement(Set<Modifier> modifiers) {
71 this.modifiers = new LinkedHashSet<>(modifiers);
72 }
73
74 public E add(E element) {
75 if (element == null) {
76 throw new NullPointerException();
77 }
78 getEnclosedElements().add(element);
79 return element;
80 }
81
82 public void remove(E element) {
83 getEnclosedElements().remove(element);
84 }
85
86 @Override
87 public Set<Modifier> getModifiers() {
88 return modifiers;
89 }
90
91 @Override
92 public List<E> getEnclosedElements() {
93 if (enclosedElements == null) {
94 enclosedElements = parentableList(this, new ArrayList<E>());
95 }
96 return enclosedElements;
97 }
98
99 @Override
100 public List<AnnotationMirror> getAnnotationMirrors() {
101 if (annotations == null) {
102 annotations = parentableList(this, new ArrayList<AnnotationMirror>());
103 }
104 return annotations;
105 }
106
107 @Override
108 public <A extends Annotation> A getAnnotation(Class<A> annotationType) {
109 throw new UnsupportedOperationException();
110 }
111
112 @Override
113 public void addAnnotationMirror(AnnotationMirror annotationMirror) {
114 getAnnotationMirrors().add(annotationMirror);
115 }
116
117 public void removeAnnotationMirror(AnnotationMirror annotationMirror) {
118 getAnnotationMirrors().remove(annotationMirror);
119 }
120
121 void setEnclosingElement(Element parent) {
122 if (this.enclosingElement != null && parent != null) {
123 throw new IllegalStateException("Element already added to " + parent);
124 }
125 this.enclosingElement = parent;
126 }
127
128 public Element getEnclosingElement() {
129 return enclosingElement;
130 }
131
132 public CodeTypeElement getEnclosingClass() {
133 Element p = enclosingElement;
134 while (p != null && p.getKind() != ElementKind.CLASS
135 && p.getKind() != ElementKind.ENUM) {
136 p = p.getEnclosingElement();
137 }
138 return (CodeTypeElement) p;
139 }
140
141 <T> List<T> parentableList(Element parent, List<T> list) {
142 return new ParentableList<>(parent, list);
143 }
144
145
146 @Override
147 public String toString() {
148 StringBuilderCodeWriter codeWriter = new StringBuilderCodeWriter();
149 accept(codeWriter, null);
150 return codeWriter.getString();
151 }
152
153 private static class StringBuilderCodeWriter extends AbstractCodeWriter {
154
155 public StringBuilderCodeWriter() {
156 this.writer = new CharArrayWriter();
157 }
158
159 @Override
160 protected Writer createWriter(CodeTypeElement clazz) throws IOException {
161 return writer;
162 }
163 public String getString() {
164 return new String(((CharArrayWriter) writer).toCharArray());
165 }
166
167 }
168
169
170 private static class ParentableList<T> implements List<T> {
171
172 private final Element parent;
173 private final List<T> delegate;
174
175 public ParentableList(Element parent, List<T> delegate) {
176 this.parent = parent;
177 this.delegate = delegate;
178 }
179
180 private void addImpl(T element) {
181 if (element != null) {
182 if (element instanceof CodeElement<?>) {
183 ((CodeElement<?>) element).setEnclosingElement(parent);
184 }
185 }
186 }
187
188 private static void removeImpl(Object element) {
189 if (element instanceof CodeElement<?>) {
190 ((CodeElement<?>) element).setEnclosingElement(null);
191 }
192 }
193
194 @Override
195 public int size() {
196 return delegate.size();
197 }
198
199 @Override
200 public boolean isEmpty() {
201 return delegate.isEmpty();
202 }
203
204 @Override
205 public boolean contains(Object o) {
206 return delegate.contains(o);
207 }
208
209 @Override
210 public Iterator<T> iterator() {
211 return delegate.iterator();
212 }
213
214 @Override
215 public Object[] toArray() {
216 return delegate.toArray();
217 }
218
219 @Override
220 public <E> E[] toArray(E[] a) {
221 return delegate.toArray(a);
222 }
223
224 @Override
225 public boolean add(T e) {
226 addImpl(e);
227 return delegate.add(e);
228 }
229
230 @Override
231 public boolean remove(Object o) {
232 boolean removed = delegate.remove(o);
233 if (removed) {
234 removeImpl(o);
235 }
236 return removed;
237 }
238
239 @Override
240 public boolean containsAll(Collection< ? > c) {
241 return delegate.containsAll(c);
242 }
243
244 @Override
245 public boolean addAll(Collection< ? extends T> c) {
246 if (c != null) {
247 for (T t : c) {
248 addImpl(t);
249 }
250 }
251 return delegate.addAll(c);
252 }
253
254 @Override
255 public boolean addAll(int index, Collection< ? extends T> c) {
256 if (c != null) {
257 for (T t : c) {
258 addImpl(t);
259 }
260 }
261 return delegate.addAll(index, c);
262 }
263
264 @Override
265 public boolean removeAll(Collection< ? > c) {
266 if (c != null) {
267 for (Object t : c) {
268 removeImpl(t);
269 }
270 }
271 return delegate.removeAll(c);
272 }
273
274 @Override
275 public String toString() {
276 return delegate.toString();
277 }
278
279 @Override
280 public boolean retainAll(Collection< ? > c) {
281 throw new UnsupportedOperationException("Not supported by parentable list");
282 }
283
284 @Override
285 public void clear() {
286 for (Object e : this) {
287 removeImpl(e);
288 }
289 delegate.clear();
290 }
291
292 @Override
293 public T get(int index) {
294 return delegate.get(index);
295 }
296
297 @Override
298 public T set(int index, T element) {
299 removeImpl(delegate.get(index));
300 addImpl(element);
301 return delegate.set(index, element);
302 }
303
304 @Override
305 public void add(int index, T element) {
306 addImpl(element);
307 delegate.add(index, element);
308 }
309
310 @Override
311 public T remove(int index) {
312 T element = delegate.remove(index);
313 removeImpl(element);
314 return element;
315 }
316
317 @Override
318 public int indexOf(Object o) {
319 return delegate.indexOf(o);
320 }
321
322 @Override
323 public int lastIndexOf(Object o) {
324 return delegate.lastIndexOf(o);
325 }
326
327 @Override
328 public ListIterator<T> listIterator() {
329 return delegate.listIterator();
330 }
331
332 @Override
333 public ListIterator<T> listIterator(int index) {
334 return delegate.listIterator(index);
335 }
336
337 @Override
338 public List<T> subList(int fromIndex, int toIndex) {
339 return new ParentableList<>(parent, delegate.subList(fromIndex, toIndex));
340 }
341
342 }
343
344
345 }