| /* |
| * Copyright (c) 2013, 2015, Oracle and/or its affiliates. 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. |
| */ |
| package org.graalvm.compiler.replacements.verifier; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Array; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import javax.annotation.processing.ProcessingEnvironment; |
| import javax.lang.model.element.AnnotationMirror; |
| import javax.lang.model.element.AnnotationValue; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.ExecutableElement; |
| import javax.lang.model.type.TypeMirror; |
| import javax.lang.model.util.ElementFilter; |
| |
| public abstract class AbstractVerifier { |
| |
| protected final ProcessingEnvironment env; |
| |
| public AbstractVerifier(ProcessingEnvironment env) { |
| this.env = env; |
| } |
| |
| public abstract void verify(Element element, AnnotationMirror annotation, PluginGenerator generator); |
| |
| public abstract Class<? extends Annotation> getAnnotationClass(); |
| |
| @SuppressWarnings("unchecked") |
| protected static <T> T resolveAnnotationValue(Class<T> expectedType, AnnotationValue value) { |
| if (value == null) { |
| return null; |
| } |
| if (expectedType.isArray()) { |
| ArrayList<Object> result = new ArrayList<>(); |
| List<AnnotationValue> l = (List<AnnotationValue>) value.getValue(); |
| for (AnnotationValue el : l) { |
| result.add(resolveAnnotationValue(expectedType.getComponentType(), el)); |
| } |
| return (T) result.toArray((Object[]) Array.newInstance(expectedType.getComponentType(), result.size())); |
| } |
| Object unboxedValue = value.getValue(); |
| if (unboxedValue != null) { |
| if (expectedType == TypeMirror.class && unboxedValue instanceof String) { |
| /* |
| * Happens if type is invalid when using the ECJ compiler. The ECJ does not match |
| * AP-API specification here. |
| */ |
| return null; |
| } |
| if (!expectedType.isAssignableFrom(unboxedValue.getClass())) { |
| throw new ClassCastException(unboxedValue.getClass().getName() + " not assignable from " + expectedType.getName()); |
| } |
| } |
| return (T) unboxedValue; |
| } |
| |
| protected static AnnotationValue findAnnotationValue(AnnotationMirror mirror, String name) { |
| ExecutableElement valueMethod = null; |
| for (ExecutableElement method : ElementFilter.methodsIn(mirror.getAnnotationType().asElement().getEnclosedElements())) { |
| if (method.getSimpleName().toString().equals(name)) { |
| valueMethod = method; |
| break; |
| } |
| } |
| |
| if (valueMethod == null) { |
| return null; |
| } |
| |
| AnnotationValue value = mirror.getElementValues().get(valueMethod); |
| if (value == null) { |
| value = valueMethod.getDefaultValue(); |
| } |
| |
| return value; |
| } |
| |
| } |