1/*
2 * Copyright (c) 2006, 2015, 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 6380016
27 * @summary Test that the constraints guaranteed by the Filer and maintained
28 * @author  Joseph D. Darcy
29 * @library /tools/javac/lib
30 * @modules java.compiler
31 *          jdk.compiler
32 * @build   JavacTestingAbstractProcessor TestNames
33 * @compile -processor TestNames -proc:only TestNames.java
34 */
35
36import java.util.Set;
37import javax.annotation.processing.*;
38import javax.lang.model.SourceVersion;
39import static javax.lang.model.SourceVersion.*;
40import javax.lang.model.element.*;
41import javax.lang.model.util.*;
42import static javax.lang.model.util.ElementFilter.*;
43import static javax.tools.Diagnostic.Kind.*;
44import static javax.tools.StandardLocation.*;
45
46import java.io.*;
47
48/**
49 * Basic tests of semantics of javax.lang.model.element.Name
50 */
51public class TestNames extends JavacTestingAbstractProcessor {
52    private int round = 0;
53
54    String stringStringName = "java.lang.String";
55    Name stringName = null;
56
57    public boolean process(Set<? extends TypeElement> annotations,
58                           RoundEnvironment roundEnv) {
59        round++;
60        if (!roundEnv.processingOver()) {
61            boolean failed = false;
62
63            switch(round) {
64            case 1:
65
66            TypeElement stringMirror = eltUtils.getTypeElement(stringStringName);
67            stringName = stringMirror.getQualifiedName();
68            Name stringPseudoName = Pseudonym.getName(stringName.toString());
69
70
71            if (stringName.equals(stringPseudoName))
72                failed = true;
73            if (!stringName.contentEquals(stringStringName))
74                failed = true;
75            if (!stringName.contentEquals(stringPseudoName))
76                failed = true;
77
78
79            try {
80                // Force another round with a new context
81                PrintWriter pw = new PrintWriter(filer.createSourceFile("Foo").openWriter());
82                pw.println("public class Foo {}");
83                pw.close();
84            } catch (IOException ioe) {
85                throw new RuntimeException();
86            }
87            break;
88
89            case 2:
90                Name stringStringAsName = eltUtils.getName(stringStringName);
91                TypeElement stringMirror2 = eltUtils.getTypeElement(stringStringName);
92                Name stringName2 = stringMirror2.getQualifiedName();
93
94                if (stringStringAsName != stringName ||
95                    stringName != stringName2)
96                    failed = true;
97                break;
98
99            default:
100                throw new RuntimeException("Unexpected round " + round);
101            }
102
103            if (failed)
104                throw new RuntimeException("Invalid name equality checks.");
105        }
106        return true;
107    }
108
109    private static class Pseudonym implements Name {
110        private String name;
111
112        private Pseudonym(String name) {
113            this.name = name;
114        }
115
116        public static Pseudonym getName(String name) {
117            return new Pseudonym(name);
118        }
119
120        public boolean contentEquals(CharSequence cs) {
121            return name.contentEquals(cs);
122        }
123
124        public char charAt(int index) {
125            return name.charAt(index);
126        }
127
128        public int length() {
129            return name.length();
130        }
131
132        public CharSequence subSequence(int start, int end) {
133            return name.subSequence(start, end);
134        }
135
136        public String toString() {
137            return name;
138        }
139    }
140}
141