001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 */ 018package org.apache.bcel.classfile; 019 020import java.io.DataInput; 021import java.io.DataOutputStream; 022import java.io.IOException; 023import java.util.ArrayList; 024import java.util.Collections; 025import java.util.List; 026 027/** 028 * represents one parameter annotation in the parameter annotation table 029 * 030 * @version $Id: ParameterAnnotationEntry 031 * @since 6.0 032 */ 033public class ParameterAnnotationEntry implements Node { 034 035 private final AnnotationEntry[] annotation_table; 036 037 038 /** 039 * Construct object from input stream. 040 * 041 * @param input Input stream 042 * @throws IOException 043 */ 044 ParameterAnnotationEntry(final DataInput input, final ConstantPool constant_pool) throws IOException { 045 final int annotation_table_length = input.readUnsignedShort(); 046 annotation_table = new AnnotationEntry[annotation_table_length]; 047 for (int i = 0; i < annotation_table_length; i++) { 048 // TODO isRuntimeVisible 049 annotation_table[i] = AnnotationEntry.read(input, constant_pool, false); 050 } 051 } 052 053 054 /** 055 * Called by objects that are traversing the nodes of the tree implicitely 056 * defined by the contents of a Java class. I.e., the hierarchy of methods, 057 * fields, attributes, etc. spawns a tree of objects. 058 * 059 * @param v Visitor object 060 */ 061 @Override 062 public void accept( final Visitor v ) { 063 v.visitParameterAnnotationEntry(this); 064 } 065 066 /** 067 * returns the array of annotation entries in this annotation 068 */ 069 public AnnotationEntry[] getAnnotationEntries() { 070 return annotation_table; 071 } 072 073 public void dump(final DataOutputStream dos) throws IOException { 074 dos.writeShort(annotation_table.length); 075 for (final AnnotationEntry entry : annotation_table) { 076 entry.dump(dos); 077 } 078 } 079 080 public static ParameterAnnotationEntry[] createParameterAnnotationEntries(final Attribute[] attrs) { 081 // Find attributes that contain parameter annotation data 082 final List<ParameterAnnotationEntry> accumulatedAnnotations = new ArrayList<>(attrs.length); 083 for (final Attribute attribute : attrs) { 084 if (attribute instanceof ParameterAnnotations) { 085 final ParameterAnnotations runtimeAnnotations = (ParameterAnnotations)attribute; 086 Collections.addAll(accumulatedAnnotations, runtimeAnnotations.getParameterAnnotationEntries()); 087 } 088 } 089 return accumulatedAnnotations.toArray(new ParameterAnnotationEntry[accumulatedAnnotations.size()]); 090 } 091} 092