| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.felix.ipojo.manipulator.metadata.annotation.visitor.generic; |
| |
| import org.apache.felix.ipojo.manipulator.metadata.annotation.visitor.util.Elements; |
| import org.apache.felix.ipojo.metadata.Attribute; |
| import org.apache.felix.ipojo.metadata.Element; |
| import org.objectweb.asm.AnnotationVisitor; |
| import org.objectweb.asm.Opcodes; |
| import org.objectweb.asm.Type; |
| |
| import java.lang.reflect.Array; |
| |
| /** |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class GenericVisitor extends AnnotationVisitor { |
| protected Element element; |
| |
| public GenericVisitor(Element element) { |
| super(Opcodes.ASM5); |
| this.element = element; |
| } |
| |
| /** |
| * Visit a 'simple' annotation attribute. |
| * This method is used for primitive arrays too. |
| * |
| * @param name : attribute name |
| * @param value : attribute value |
| * @see org.objectweb.asm.AnnotationVisitor#visit(String, Object) |
| */ |
| public void visit(String name, Object value) { |
| if (value.getClass().isArray()) { |
| // Primitive arrays case |
| String v = null; |
| int index = Array.getLength(value); |
| for (int i = 0; i < index; i++) { |
| if (v == null) { |
| v = "{" + Array.get(value, i); |
| } else { |
| v += "," + Array.get(value, i); |
| } |
| } |
| v += "}"; |
| element.addAttribute(new Attribute(name, v)); |
| return; |
| } |
| |
| // Attributes are added as normal attributes |
| if (!(value instanceof Type)) { |
| element.addAttribute(new Attribute(name, value.toString())); |
| } else { |
| // Attributes of type class need a special handling |
| element.addAttribute(new Attribute(name, ((Type) value).getClassName())); |
| } |
| |
| } |
| |
| /** |
| * Visit a sub-annotation. |
| * |
| * @param name : attribute name. |
| * @param descriptor : annotation description |
| * @return an annotation visitor which will visit the given annotation |
| * @see org.objectweb.asm.AnnotationVisitor#visitAnnotation(String, String) |
| */ |
| public AnnotationVisitor visitAnnotation(String name, String descriptor) { |
| // Sub annotations are mapped to sub-elements |
| Element sub = Elements.buildElement(Type.getType(descriptor)); |
| element.addElement(sub); |
| return new GenericVisitor(sub); |
| } |
| |
| /** |
| * Visit an array attribute. |
| * |
| * @param name : attribute name |
| * @return a visitor which will visit each element of the array |
| * @see org.objectweb.asm.AnnotationVisitor#visitArray(String) |
| */ |
| public AnnotationVisitor visitArray(String name) { |
| return new SubArrayVisitor(element, name); |
| } |
| |
| /** |
| * Visits an enumeration attribute. |
| * |
| * @param name the attribute name |
| * @param desc the enumeration descriptor |
| * @param value the attribute value |
| * @see org.objectweb.asm.AnnotationVisitor#visitEnum(String, String, String) |
| */ |
| public void visitEnum(String name, String desc, String value) { |
| element.addAttribute(new Attribute(name, value)); |
| } |
| } |