1 /*
2  * Copyright (c) 2006, 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.
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 
24 /*
25  * @test
26  * @bug 6402516
27  * @summary need Trees.getScope(TreePath)
28  * @build Checker CheckLocalElements
29  * @run main CheckLocalElements
30  */
31 
32 import java.util.*;
33 import com.sun.source.tree.*;
34 import javax.lang.model.element.*;
35 import javax.lang.model.util.*;
36 
37 /*
38  * Check the local elements of a scope against the contents of string literals.
39  */
40 public class CheckLocalElements extends Checker {
main(String... args)41     public static void main(String... args) throws Exception {
42         Checker chk = new CheckLocalElements();
43         chk.check("TestLocalElements.java");
44     }
45 
46     @Override
checkLocal(Scope s, String ref)47     protected boolean checkLocal(Scope s, String ref) {
48         Iterator<? extends Element> elemIter = s.getLocalElements().iterator();
49         ref = ref.trim();
50         String[] refs = ref.length() == 0 ? new String[0] : ref.split("[ ]*,[ ]*", -1);
51         Iterator<String> refIter = Arrays.asList(refs).iterator();
52         String r = null;
53 
54         nextElem:
55         while (elemIter.hasNext()) {
56             Element e = elemIter.next();
57             try {
58                 if (r == null)
59                     r = refIter.next();
60 
61                 while (r.endsWith(".*")) {
62                     String encl = getEnclosingName(e);
63                     String rBase = r.substring(0, r.length() - 2);
64                     if (encl.equals(rBase) || encl.startsWith(rBase + "."))
65                         continue nextElem;
66                     r = refIter.next();
67                 }
68 
69                 if (r.equals("-") && (e.getSimpleName().length() == 0)
70                     || e.getSimpleName().toString().equals(r)) {
71                     r = null;
72                     continue nextElem;
73                 }
74 
75                 error(s, ref, "mismatch: " + e.getSimpleName() + " " + r);
76                 return false;
77 
78             } catch (NoSuchElementException ex) { // from refIter.next()
79                 error(s, null, "scope has unexpected entry: " + e.getSimpleName());
80                 return false;
81             }
82 
83         }
84 
85         if (refIter.hasNext()) {
86             error(s, ref, "scope is missing entry: " + refIter.next());
87             return false;
88         }
89 
90         return true;
91     }
92 
getEnclosingName(Element e)93     private String getEnclosingName(Element e) {
94         Element encl = e.getEnclosingElement();
95         return encl == null ? "" : encl.accept(qualNameVisitor, null);
96     }
97 
98     private ElementVisitor<String,Void> qualNameVisitor = new SimpleElementVisitor8<String,Void>() {
99         protected String defaultAction(Element e, Void ignore) {
100             return "";
101         }
102 
103         public String visitPackage(PackageElement e, Void ignore) {
104             return e.getQualifiedName().toString();
105         }
106 
107         public String visitType(TypeElement e, Void ignore) {
108             return e.getQualifiedName().toString();
109         }
110     };
111 }
112