1 /*
2 * Copyright (c) 1997, 2011, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.internal.jxc.ap;
27
28 import java.lang.annotation.Annotation;
29 import java.lang.reflect.InvocationTargetException;
30 import java.util.ArrayList;
31 import java.util.Collection;
32 import java.util.List;
33
34 import javax.lang.model.element.AnnotationMirror;
35 import javax.lang.model.element.Element;
36 import javax.lang.model.element.ExecutableElement;
37 import javax.lang.model.element.TypeElement;
38 import javax.lang.model.element.VariableElement;
39 import javax.lang.model.type.MirroredTypeException;
40 import javax.lang.model.type.MirroredTypesException;
41 import javax.lang.model.type.TypeMirror;
42 import com.sun.xml.internal.bind.v2.model.annotation.AbstractInlineAnnotationReaderImpl;
43 import com.sun.xml.internal.bind.v2.model.annotation.AnnotationReader;
44 import com.sun.xml.internal.bind.v2.model.annotation.Locatable;
45 import com.sun.xml.internal.bind.v2.model.annotation.LocatableAnnotation;
46
47 /**
48 * {@link AnnotationReader} implementation that reads annotation inline from Annoation Processing.
49 *
50 * @author Kohsuke Kawaguchi (kk@kohsuke.org)
51 */
52 public final class InlineAnnotationReaderImpl extends AbstractInlineAnnotationReaderImpl<TypeMirror, TypeElement, VariableElement, ExecutableElement> {
53
54 /** The singleton instance. */
55 public static final InlineAnnotationReaderImpl theInstance = new InlineAnnotationReaderImpl();
56
57 private InlineAnnotationReaderImpl() {}
58
59 public <A extends Annotation> A getClassAnnotation(Class<A> a, TypeElement clazz, Locatable srcPos) {
60 return LocatableAnnotation.create(clazz.getAnnotation(a),srcPos);
61 }
62
63 public <A extends Annotation> A getFieldAnnotation(Class<A> a, VariableElement f, Locatable srcPos) {
64 return LocatableAnnotation.create(f.getAnnotation(a),srcPos);
65 }
66
67 public boolean hasFieldAnnotation(Class<? extends Annotation> annotationType, VariableElement f) {
68 return f.getAnnotation(annotationType)!=null;
69 }
70
71 public boolean hasClassAnnotation(TypeElement clazz, Class<? extends Annotation> annotationType) {
72 return clazz.getAnnotation(annotationType)!=null;
73 }
74
75 public Annotation[] getAllFieldAnnotations(VariableElement field, Locatable srcPos) {
76 return getAllAnnotations(field,srcPos);
77 }
78
79 public <A extends Annotation> A getMethodAnnotation(Class<A> a, ExecutableElement method, Locatable srcPos) {
80 return LocatableAnnotation.create(method.getAnnotation(a),srcPos);
81 }
82
83 public boolean hasMethodAnnotation(Class<? extends Annotation> a, ExecutableElement method) {
84 return method.getAnnotation(a)!=null;
85 }
86
87 public Annotation[] getAllMethodAnnotations(ExecutableElement method, Locatable srcPos) {
88 return getAllAnnotations(method,srcPos);
89 }
90
91 /**
92 * Gets all the annotations on the given declaration.
93 */
94 private Annotation[] getAllAnnotations(Element decl, Locatable srcPos) {
95 List<Annotation> r = new ArrayList<Annotation>();
96
97 for( AnnotationMirror m : decl.getAnnotationMirrors() ) {
98 try {
99 String fullName = ((TypeElement) m.getAnnotationType().asElement()).getQualifiedName().toString();
100 Class<? extends Annotation> type =
101 SecureLoader.getClassClassLoader(getClass()).loadClass(fullName).asSubclass(Annotation.class);
102 Annotation annotation = decl.getAnnotation(type);
103 if(annotation!=null)
104 r.add( LocatableAnnotation.create(annotation,srcPos) );
105 } catch (ClassNotFoundException e) {
106 // just continue
107 }
108 }
109
110 return r.toArray(new Annotation[r.size()]);
111 }
112
113 public <A extends Annotation> A getMethodParameterAnnotation(Class<A> a, ExecutableElement m, int paramIndex, Locatable srcPos) {
114 VariableElement[] params = m.getParameters().toArray(new VariableElement[m.getParameters().size()]);
115 return LocatableAnnotation.create(
116 params[paramIndex].getAnnotation(a), srcPos );
117 }
118
119 public <A extends Annotation> A getPackageAnnotation(Class<A> a, TypeElement clazz, Locatable srcPos) {
120 return LocatableAnnotation.create(clazz.getEnclosingElement().getAnnotation(a), srcPos);
121 }
122
123 public TypeMirror getClassValue(Annotation a, String name) {
124 try {
125 a.annotationType().getMethod(name).invoke(a);
126 assert false;
127 throw new IllegalStateException("should throw a MirroredTypeException");
128 } catch (IllegalAccessException e) {
129 throw new IllegalAccessError(e.getMessage());
130 } catch (InvocationTargetException e) {
131 if( e.getCause() instanceof MirroredTypeException ) {
132 MirroredTypeException me = (MirroredTypeException)e.getCause();
133 return me.getTypeMirror();
134 }
135 // impossible
136 throw new RuntimeException(e);
137 } catch (NoSuchMethodException e) {
138 throw new NoSuchMethodError(e.getMessage());
139 }
140 }
141
142 public TypeMirror[] getClassArrayValue(Annotation a, String name) {
143 try {
144 a.annotationType().getMethod(name).invoke(a);
145 assert false;
146 throw new IllegalStateException("should throw a MirroredTypesException");
147 } catch (IllegalAccessException e) {
148 throw new IllegalAccessError(e.getMessage());
149 } catch (InvocationTargetException e) {
150 if( e.getCause() instanceof MirroredTypesException ) {
151 MirroredTypesException me = (MirroredTypesException)e.getCause();
152 Collection<? extends TypeMirror> r = me.getTypeMirrors();
153 return r.toArray(new TypeMirror[r.size()]);
154 }
155 // *********************** TODO: jdk6 bug. Fixed in java7
156 // According to the javadocs it should throw the MirroredTypesException
157 if( e.getCause() instanceof MirroredTypeException ) {
158 MirroredTypeException me = (MirroredTypeException)e.getCause();
159 TypeMirror tr = me.getTypeMirror();
160 TypeMirror[] trArr = new TypeMirror[1];
161 trArr[0] = tr;
162 return trArr;
163 }
164 // *******************************************
165 // impossible
166 throw new RuntimeException(e);
167 } catch (NoSuchMethodException e) {
168 throw new NoSuchMethodError(e.getMessage());
169 }
170 }
171
172 protected String fullName(ExecutableElement m) {
173 return ((TypeElement) m.getEnclosingElement()).getQualifiedName().toString()+'#'+m.getSimpleName();
174 }
175 }