1 /*
2 * Copyright (c) 1997, 2013, 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.ws.processor.modeler.annotation;
27
28 import javax.annotation.processing.ProcessingEnvironment;
29 import javax.lang.model.element.ElementKind;
30 import javax.lang.model.element.ExecutableElement;
31 import javax.lang.model.element.TypeElement;
32 import javax.lang.model.element.VariableElement;
33 import javax.lang.model.type.DeclaredType;
34 import javax.lang.model.type.TypeKind;
35 import javax.lang.model.type.TypeMirror;
36 import javax.lang.model.util.ElementFilter;
37 import java.util.Collection;
38
39 /**
40 * @author WS Development Team
41 */
42 final class TypeModeler {
43
44 private TypeModeler() {
45 }
46
47 public static TypeElement getDeclaration(TypeMirror typeMirror) {
48 if (typeMirror != null && typeMirror.getKind().equals(TypeKind.DECLARED))
49 return (TypeElement) ((DeclaredType) typeMirror).asElement();
50 return null;
51 }
52
53 public static TypeElement getDeclaringClassMethod(TypeMirror theClass, String methodName, TypeMirror[] args) {
54 return getDeclaringClassMethod(getDeclaration(theClass), methodName, args);
55 }
56
57 public static TypeElement getDeclaringClassMethod(TypeElement theClass, String methodName, TypeMirror[] args) {
58
59 TypeElement retClass = null;
60 if (theClass.getKind().equals(ElementKind.CLASS)) {
61 TypeMirror superClass = theClass.getSuperclass();
62 if (!superClass.getKind().equals(TypeKind.NONE))
63 retClass = getDeclaringClassMethod(superClass, methodName, args);
64 }
65 if (retClass == null) {
66 for (TypeMirror interfaceType : theClass.getInterfaces()) {
67 retClass = getDeclaringClassMethod(interfaceType, methodName, args);
68 }
69 }
70 if (retClass == null) {
71 Collection<? extends ExecutableElement> methods = ElementFilter.methodsIn(theClass.getEnclosedElements());
72 for (ExecutableElement method : methods) {
73 if (method.getSimpleName().toString().equals(methodName)) {
74 retClass = theClass;
75 break;
76 }
77 }
78 }
79 return retClass;
80 }
81
82 public static Collection<DeclaredType> collectInterfaces(TypeElement type) {
83 @SuppressWarnings({"unchecked"})
84 Collection<DeclaredType> interfaces = (Collection<DeclaredType>) type.getInterfaces();
85 for (TypeMirror interfaceType : type.getInterfaces()) {
86 interfaces.addAll(collectInterfaces(getDeclaration(interfaceType)));
87 }
88 return interfaces;
89 }
90
91 public static boolean isSubclass(String subTypeName, String superTypeName, ProcessingEnvironment env) {
92 return isSubclass(env.getElementUtils().getTypeElement(subTypeName), env.getElementUtils().getTypeElement(superTypeName), env);
93 }
94
95 public static boolean isSubclass(TypeElement subType, TypeElement superType, ProcessingEnvironment env) {
96 return !subType.equals(superType) && isSubElement(subType, superType);
97 }
98
99 public static TypeMirror getHolderValueType(TypeMirror type, TypeElement defHolder, ProcessingEnvironment env) {
100 TypeElement typeElement = getDeclaration(type);
101 if (typeElement == null)
102 return null;
103
104 if (isSubElement(typeElement, defHolder)) {
105 if (type.getKind().equals(TypeKind.DECLARED)) {
106 Collection<? extends TypeMirror> argTypes = ((DeclaredType) type).getTypeArguments();
107 if (argTypes.size() == 1) {
108 return argTypes.iterator().next();
109 } else if (argTypes.isEmpty()) {
110 VariableElement member = getValueMember(typeElement);
111 if (member != null) {
112 return member.asType();
113 }
114 }
115 }
116 }
117 return null;
118 }
119
120 public static VariableElement getValueMember(TypeMirror classType) {
121 return getValueMember(getDeclaration(classType));
122 }
123
124 public static VariableElement getValueMember(TypeElement type) {
125 VariableElement member = null;
126 for (VariableElement field : ElementFilter.fieldsIn(type.getEnclosedElements())) {
127 if ("value".equals(field.getSimpleName().toString())) {
128 member = field;
129 break;
130 }
131 }
132 if (member == null && type.getKind().equals(ElementKind.CLASS))
133 member = getValueMember(type.getSuperclass());
134 return member;
135 }
136
137 public static boolean isSubElement(TypeElement d1, TypeElement d2) {
138 if (d1.equals(d2))
139 return true;
140 TypeElement superClassDecl = null;
141 if (d1.getKind().equals(ElementKind.CLASS)) {
142 TypeMirror superClass = d1.getSuperclass();
143 if (!superClass.getKind().equals(TypeKind.NONE)) {
144 superClassDecl = (TypeElement) ((DeclaredType) superClass).asElement();
145 if (superClassDecl.equals(d2))
146 return true;
147 }
148 }
149 for (TypeMirror superIntf : d1.getInterfaces()) {
150 DeclaredType declaredSuperIntf = (DeclaredType) superIntf;
151 if (declaredSuperIntf.asElement().equals(d2)) {
152 return true;
153 }
154 if (isSubElement((TypeElement) declaredSuperIntf.asElement(), d2)) {
155 return true;
156 } else if (superClassDecl != null && isSubElement(superClassDecl, d2)) {
157 return true;
158 }
159 }
160 return false;
161 }
162
163 }