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/*
* Copyright 2016 Google Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import static java.util.stream.Collectors.toCollection;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.tools.Diagnostic.Kind;
/*
* @test
* @bug 8170667
* @summary ClassReader assigns method parameters from MethodParameters incorrectly when long/double
* parameters are present
* @library /tools/javac/lib
* @modules java.compiler
* jdk.compiler
* @compile -parameters ParameterProcessor.java
* @compile/process -proc:only -processor ParameterProcessor ParameterProcessor
*/
@SupportedAnnotationTypes("ParameterProcessor.ParameterNames")
public class ParameterProcessor extends JavacTestingAbstractProcessor {
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@interface ParameterNames {
String[] value() default {};
}
@ParameterProcessor.ParameterNames({"a", "b", "c"})
void f(int a, int b, int c) {}
@ParameterProcessor.ParameterNames({"d", "e", "f"})
void g(int d, long e, int f) {}
@ParameterProcessor.ParameterNames({"g", "h", "i", "j"})
void h(int g, double h, int i, int j) {}
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
for (Element element : roundEnv.getElementsAnnotatedWith(ParameterNames.class)) {
ParameterNames names = element.getAnnotation(ParameterNames.class);
if (names == null) {
continue;
}
List<String> expected = Arrays.asList(names.value());
List<String> actual =
((ExecutableElement) element)
.getParameters()
.stream()
.map(p -> p.getSimpleName().toString())
.collect(toCollection(ArrayList::new));
if (!expected.equals(actual)) {
String message =
String.format(
"bad parameter names for %s#%s; expected: %s, was: %s",
element, element, expected, actual);
messager.printMessage(Kind.ERROR, message);
}
}
return false;
}
}
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