NestedLambdasCastedTest.java revision 3294:9adfb22ff08f 
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 8148432
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 *          jdk.jdeps/com.sun.tools.javap
33 * @build ToolBox
34 * @run compile -g NestedLambdasCastedTest.java
35 * @run main NestedLambdasCastedTest
36 */
37
38import java.nio.file.Path;
39import java.nio.file.Paths;
40import java.lang.annotation.ElementType;
41import java.lang.annotation.Target;
42
43public class NestedLambdasCastedTest {
44
45    // Expected output can't be directly encoded into NestedLambdasCastedTest !!!
46    static class ExpectedOutputHolder {
47        public String [] outputs = {
48                      "public static strictfp void main(java.lang.String[])",
49                      "private static strictfp void lambda$main$3();",
50                      "private static strictfp void lambda$main$2();",
51                      "private static strictfp void lambda$main$1();",
52                      "private static strictfp void lambda$main$0();",
53                      "0: #63(#64=s#65): CAST, offset=5, type_index=0",
54                      "0: #63(#64=s#70): CAST, offset=5, type_index=0",
55                      "0: #63(#64=s#73): CAST, offset=5, type_index=0",
56                      "0: #63(#64=s#76): CAST, offset=5, type_index=0"
57        };
58    }
59
60    @Target(ElementType.TYPE_USE)
61    public @interface TA {
62        String value() default "";
63    };
64
65    public static strictfp void main(String args[]) throws Exception {
66        Runnable one = (@TA("1") Runnable) () -> {
67            Runnable two = (@TA("2") Runnable) () -> {
68                Runnable three = (@TA("3") Runnable) () -> {
69                    Runnable four = (@TA("4") Runnable) () -> {
70                    };
71                };
72            };
73        };
74        ToolBox tb = new ToolBox();
75        Path classPath = Paths.get(ToolBox.testClasses, "NestedLambdasCastedTest.class");
76        String javapOut = tb.new JavapTask()
77                .options("-v", "-p")
78                .classes(classPath.toString())
79                .run()
80                .getOutput(ToolBox.OutputKind.DIRECT);
81        ExpectedOutputHolder holder = new ExpectedOutputHolder();
82        for (String s : holder.outputs) {
83            if (!javapOut.contains(s))
84                throw new AssertionError("Expected type annotation on LOCAL_VARIABLE missing");
85        }
86    }
87}
88