1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 package org.apache.bcel.classfile; 19 20 import java.io.DataInput; 21 import java.io.DataOutputStream; 22 import java.io.IOException; 23 import java.util.ArrayList; 24 import java.util.Collections; 25 import java.util.List; 26 27 /** 28 * represents one parameter annotation in the parameter annotation table 29 * 30 * @version $Id: ParameterAnnotationEntry 31 * @since 6.0 32 */ 33 public class ParameterAnnotationEntry implements Node { 34 35 private final AnnotationEntry[] annotation_table; 36 37 38 /** 39 * Construct object from input stream. 40 * 41 * @param input Input stream 42 * @throws IOException 43 */ ParameterAnnotationEntry(final DataInput input, final ConstantPool constant_pool)44 ParameterAnnotationEntry(final DataInput input, final ConstantPool constant_pool) throws IOException { 45 final int annotation_table_length = input.readUnsignedShort(); 46 annotation_table = new AnnotationEntry[annotation_table_length]; 47 for (int i = 0; i < annotation_table_length; i++) { 48 // TODO isRuntimeVisible 49 annotation_table[i] = AnnotationEntry.read(input, constant_pool, false); 50 } 51 } 52 53 54 /** 55 * Called by objects that are traversing the nodes of the tree implicitely 56 * defined by the contents of a Java class. I.e., the hierarchy of methods, 57 * fields, attributes, etc. spawns a tree of objects. 58 * 59 * @param v Visitor object 60 */ 61 @Override accept( final Visitor v )62 public void accept( final Visitor v ) { 63 v.visitParameterAnnotationEntry(this); 64 } 65 66 /** 67 * returns the array of annotation entries in this annotation 68 */ getAnnotationEntries()69 public AnnotationEntry[] getAnnotationEntries() { 70 return annotation_table; 71 } 72 dump(final DataOutputStream dos)73 public void dump(final DataOutputStream dos) throws IOException { 74 dos.writeShort(annotation_table.length); 75 for (final AnnotationEntry entry : annotation_table) { 76 entry.dump(dos); 77 } 78 } 79 createParameterAnnotationEntries(final Attribute[] attrs)80 public static ParameterAnnotationEntry[] createParameterAnnotationEntries(final Attribute[] attrs) { 81 // Find attributes that contain parameter annotation data 82 final List<ParameterAnnotationEntry> accumulatedAnnotations = new ArrayList<>(attrs.length); 83 for (final Attribute attribute : attrs) { 84 if (attribute instanceof ParameterAnnotations) { 85 final ParameterAnnotations runtimeAnnotations = (ParameterAnnotations)attribute; 86 Collections.addAll(accumulatedAnnotations, runtimeAnnotations.getParameterAnnotationEntries()); 87 } 88 } 89 return accumulatedAnnotations.toArray(new ParameterAnnotationEntry[accumulatedAnnotations.size()]); 90 } 91 } 92 93