NestedLambdasCastedTest.java revision 3225:3a9a4b5eabe4 
1/*
2 * Copyright (c) 2016, 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 8144168
27 * @summary No type annotations generated for nested lambdas
28 * @library /tools/lib
29 * @modules jdk.compiler/com.sun.tools.javac.api
30 *          jdk.compiler/com.sun.tools.javac.file
31 *          jdk.compiler/com.sun.tools.javac.main
32 * @build ToolBox
33 * @run compile NestedLambdasCastedTest.java
34 * @run main NestedLambdasCastedTest
35 */
36
37import java.nio.file.Path;
38import java.nio.file.Paths;
39import java.lang.annotation.ElementType;
40import java.lang.annotation.Target;
41
42public class NestedLambdasCastedTest {
43
44    // Expected output can't be directly encoded into NestedLambdasCastedTest !!!
45    static class ExpectedOutputHolder {
46        public String [] outputs = {
47                      "public static strictfp void main(java.lang.String[])",
48                      "private static strictfp void lambda$main$3();",
49                      "private static strictfp void lambda$main$2();",
50                      "private static strictfp void lambda$main$1();",
51                      "private static strictfp void lambda$main$0();",
52                      "0: #63(#64=s#65): CAST, offset=5, type_index=0",
53                      "0: #63(#64=s#70): CAST, offset=5, type_index=0",
54                      "0: #63(#64=s#73): CAST, offset=5, type_index=0",
55                      "0: #63(#64=s#76): CAST, offset=5, type_index=0"
56        };
57    }
58
59    @Target(ElementType.TYPE_USE)
60    public @interface TA {
61        String value() default "";
62    };
63
64    public static strictfp void main(String args[]) throws Exception {
65        Runnable one = (@TA("1") Runnable) () -> {
66            Runnable two = (@TA("2") Runnable) () -> {
67                Runnable three = (@TA("3") Runnable) () -> {
68                    Runnable four = (@TA("4") Runnable) () -> {
69                    };
70                };
71            };
72        };
73        ToolBox tb = new ToolBox();
74        Path classPath = Paths.get(ToolBox.testClasses, "NestedLambdasCastedTest.class");
75        String javapOut = tb.new JavapTask()
76                .options("-v", "-p")
77                .classes(classPath.toString())
78                .run()
79                .getOutput(ToolBox.OutputKind.DIRECT);
80        ExpectedOutputHolder holder = new ExpectedOutputHolder();
81        for (String s : holder.outputs)
82        if (!javapOut.contains(s))
83            throw new AssertionError("Expected type annotation on LOCAL_VARIABLE missing");
84    }
85}
86