TypeParamBounds.java revision 698:d2aaaec153e8 
1/*
2 * Copyright (c) 2006, 2010, 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     6423972
27 * @summary Tests TypeParameter.getBounds.
28 * @author  Scott Seligman
29 * @library ../../../lib
30 * @build   JavacTestingAbstractProcessor TypeParamBounds
31 * @compile -processor TypeParamBounds -proc:only TypeParamBounds.java
32 */
33
34import java.util.HashMap;
35import java.util.List;
36import java.util.Map;
37import java.util.Set;
38import javax.annotation.processing.*;
39import javax.lang.model.SourceVersion;
40import javax.lang.model.element.*;
41import javax.lang.model.type.*;
42import javax.lang.model.util.*;
43
44public class TypeParamBounds extends JavacTestingAbstractProcessor {
45    public boolean process(Set<? extends TypeElement> annoTypes,
46                           RoundEnvironment round) {
47        if (!round.processingOver())
48            doit(annoTypes, round);
49        return true;
50    }
51
52    private void doit(Set<? extends TypeElement> annoTypes,
53                      RoundEnvironment round) {
54        TypeElement gen = elements.getTypeElement("TypeParamBounds.Gen");
55
56        // For each type parameter of Gen, compare its bounds with the
57        // bounds that are expected.
58        //
59        for (TypeParameterElement tparam : gen.getTypeParameters()) {
60            System.out.println(tparam);
61            List<? extends TypeMirror> bounds = tparam.getBounds();
62            String[] expected = Gen.boundNames.get(tparam + "");
63
64            if (bounds.size() != expected.length)
65                throw new AssertionError();
66            int i = 0;
67            for (TypeMirror bound : bounds) {
68                Name got = types.asElement(bound).getSimpleName();
69                String shoulda = expected[i++];
70                System.out.println("  " + got);
71                if (!got.contentEquals(shoulda))
72                    throw new AssertionError(shoulda);
73            }
74        }
75    }
76
77
78    // Fodder for the processor
79    static class Gen<T, U extends Object, V extends Number, W extends U,
80                     X extends Runnable, Y extends CharSequence & Runnable,
81                     Z extends Object & Runnable> {
82
83        // The names of the bounds of each type parameter of Gen.
84        static Map<String, String[]> boundNames =
85                new HashMap<String, String[]>();
86
87        static {
88            boundNames.put("T", new String[] {"Object"});
89            boundNames.put("U", new String[] {"Object"});
90            boundNames.put("V", new String[] {"Number"});
91            boundNames.put("W", new String[] {"U"});
92            boundNames.put("X", new String[] {"Runnable"});
93            boundNames.put("Y", new String[] {"CharSequence", "Runnable"});
94            boundNames.put("Z", new String[] {"Object", "Runnable"});
95        }
96    }
97}
98