1/*
2 * Copyright (c) 2015, 2015, 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 */
23package org.graalvm.compiler.replacements.verifier;
24
25import java.lang.annotation.Annotation;
26
27import javax.annotation.processing.ProcessingEnvironment;
28import javax.lang.model.element.AnnotationMirror;
29import javax.lang.model.element.Element;
30import javax.lang.model.element.ElementKind;
31import javax.lang.model.element.ExecutableElement;
32import javax.lang.model.element.Modifier;
33import javax.tools.Diagnostic.Kind;
34
35import org.graalvm.compiler.api.replacements.Fold;
36
37public final class FoldVerifier extends AbstractVerifier {
38
39    public FoldVerifier(ProcessingEnvironment env) {
40        super(env);
41    }
42
43    @Override
44    public Class<? extends Annotation> getAnnotationClass() {
45        return Fold.class;
46    }
47
48    @Override
49    public void verify(Element element, AnnotationMirror annotation, PluginGenerator generator) {
50        if (element.getKind() != ElementKind.METHOD) {
51            assert false : "Element is guaranteed to be a method.";
52            return;
53        }
54
55        ExecutableElement foldMethod = (ExecutableElement) element;
56        if (foldMethod.getModifiers().contains(Modifier.PRIVATE)) {
57            env.getMessager().printMessage(Kind.ERROR, String.format("A @%s method must not be private.", Fold.class.getSimpleName()), element, annotation);
58        } else {
59            generator.addPlugin(new GeneratedFoldPlugin(foldMethod));
60        }
61    }
62}
63