CheckLocalElements.java revision 1053:111bbf1ad913 
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
32import java.util.*;
33import com.sun.source.tree.*;
34import javax.lang.model.element.*;
35import javax.lang.model.util.*;
36
37/*
38 * Check the local elements of a scope against the contents of string literals.
39 */
40public class CheckLocalElements extends Checker {
41    public static void main(String... args) throws Exception {
42        Checker chk = new CheckLocalElements();
43        chk.check("TestLocalElements.java");
44    }
45
46    @Override
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
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