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 * @since 6.0 031 */ 032public class ParameterAnnotationEntry implements Node { 033 034 private final AnnotationEntry[] annotation_table; 035 036 037 /** 038 * Construct object from input stream. 039 * 040 * @param input Input stream 041 * @throws IOException 042 */ 043 ParameterAnnotationEntry(final DataInput input, final ConstantPool constant_pool) throws IOException { 044 final int annotation_table_length = input.readUnsignedShort(); 045 annotation_table = new AnnotationEntry[annotation_table_length]; 046 for (int i = 0; i < annotation_table_length; i++) { 047 // TODO isRuntimeVisible 048 annotation_table[i] = AnnotationEntry.read(input, constant_pool, false); 049 } 050 } 051 052 053 /** 054 * Called by objects that are traversing the nodes of the tree implicitely 055 * defined by the contents of a Java class. I.e., the hierarchy of methods, 056 * fields, attributes, etc. spawns a tree of objects. 057 * 058 * @param v Visitor object 059 */ 060 @Override 061 public void accept( final Visitor v ) { 062 v.visitParameterAnnotationEntry(this); 063 } 064 065 /** 066 * returns the array of annotation entries in this annotation 067 */ 068 public AnnotationEntry[] getAnnotationEntries() { 069 return annotation_table; 070 } 071 072 public void dump(final DataOutputStream dos) throws IOException { 073 dos.writeShort(annotation_table.length); 074 for (final AnnotationEntry entry : annotation_table) { 075 entry.dump(dos); 076 } 077 } 078 079 public static ParameterAnnotationEntry[] createParameterAnnotationEntries(final Attribute[] attrs) { 080 // Find attributes that contain parameter annotation data 081 final List<ParameterAnnotationEntry> accumulatedAnnotations = new ArrayList<>(attrs.length); 082 for (final Attribute attribute : attrs) { 083 if (attribute instanceof ParameterAnnotations) { 084 final ParameterAnnotations runtimeAnnotations = (ParameterAnnotations)attribute; 085 Collections.addAll(accumulatedAnnotations, runtimeAnnotations.getParameterAnnotationEntries()); 086 } 087 } 088 return accumulatedAnnotations.toArray(new ParameterAnnotationEntry[accumulatedAnnotations.size()]); 089 } 090} 091