1 /*

     2  * Copyright 2016 Google Inc. 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 import static java.util.stream.Collectors.toCollection;

    25 

    26 import java.lang.annotation.ElementType;

    27 import java.lang.annotation.Retention;

    28 import java.lang.annotation.RetentionPolicy;

    29 import java.lang.annotation.Target;

    30 import java.util.ArrayList;

    31 import java.util.Arrays;

    32 import java.util.List;

    33 import java.util.Set;

    34 import javax.annotation.processing.RoundEnvironment;

    35 import javax.annotation.processing.SupportedAnnotationTypes;

    36 import javax.lang.model.element.Element;

    37 import javax.lang.model.element.ExecutableElement;

    38 import javax.lang.model.element.TypeElement;

    39 import javax.tools.Diagnostic.Kind;

    40 

    41 /*

    42  * @test

    43  * @bug 8170667

    44  * @summary ClassReader assigns method parameters from MethodParameters incorrectly when long/double

    45  * parameters are present

    46  * @library /tools/javac/lib

    47  * @modules java.compiler

    48  *          jdk.compiler

    49  * @compile -parameters ParameterProcessor.java

    50  * @compile/process -proc:only -processor ParameterProcessor ParameterProcessor

    51  */

    52 @SupportedAnnotationTypes("ParameterProcessor.ParameterNames")

    53 public class ParameterProcessor extends JavacTestingAbstractProcessor {

    54 

    55     @Retention(RetentionPolicy.RUNTIME)

    56     @Target(ElementType.METHOD)

    57     @interface ParameterNames {

    58         String[] value() default {};

    59     }

    60 

    61     @ParameterProcessor.ParameterNames({"a", "b", "c"})

    62     void f(int a, int b, int c) {}

    63 

    64     @ParameterProcessor.ParameterNames({"d", "e", "f"})

    65     void g(int d, long e, int f) {}

    66 

    67     @ParameterProcessor.ParameterNames({"g", "h", "i", "j"})

    68     void h(int g, double h, int i, int j) {}

    69 

    70     @Override

    71     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

    72         for (Element element : roundEnv.getElementsAnnotatedWith(ParameterNames.class)) {

    73             ParameterNames names = element.getAnnotation(ParameterNames.class);

    74             if (names == null) {

    75                 continue;

    76             }

    77             List<String> expected = Arrays.asList(names.value());

    78             List<String> actual =

    79                     ((ExecutableElement) element)

    80                             .getParameters()

    81                             .stream()

    82                             .map(p -> p.getSimpleName().toString())

    83                             .collect(toCollection(ArrayList::new));

    84             if (!expected.equals(actual)) {

    85                 String message =

    86                         String.format(

    87                                 "bad parameter names for %s#%s; expected: %s, was: %s",

    88                                 element, element, expected, actual);

    89                 messager.printMessage(Kind.ERROR, message);

    90             }

    91         }

    92         return false;

    93     }

    94 }