1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 /*
   6  * Licensed to the Apache Software Foundation (ASF) under one or more
   7  * contributor license agreements.  See the NOTICE file distributed with
   8  * this work for additional information regarding copyright ownership.
   9  * The ASF licenses this file to You under the Apache License, Version 2.0
  10  * (the "License"); you may not use this file except in compliance with
  11  * the License.  You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  */
  21 
  22 package com.sun.org.apache.bcel.internal.classfile;
  23 
  24 import java.io.DataInput;
  25 import java.io.DataOutputStream;
  26 import java.io.IOException;
  27 import java.util.ArrayList;
  28 import java.util.Collections;
  29 import java.util.List;
  30 
  31 /**
  32  * represents one parameter annotation in the parameter annotation table
  33  *
  34  * @since 6.0
  35  */
  36 public class ParameterAnnotationEntry implements Node {
  37 
  38     private final AnnotationEntry[] annotation_table;
  39 
  40 
  41     /**
  42      * Construct object from input stream.
  43      *
  44      * @param input Input stream
  45      * @throws IOException
  46      */
  47     ParameterAnnotationEntry(final DataInput input, final ConstantPool constant_pool) throws IOException {
  48         final int annotation_table_length = input.readUnsignedShort();
  49         annotation_table = new AnnotationEntry[annotation_table_length];
  50         for (int i = 0; i < annotation_table_length; i++) {
  51             // TODO isRuntimeVisible
  52             annotation_table[i] = AnnotationEntry.read(input, constant_pool, false);
  53         }
  54     }
  55 
  56 
  57     /**
  58      * Called by objects that are traversing the nodes of the tree implicitely
  59      * defined by the contents of a Java class. I.e., the hierarchy of methods,
  60      * fields, attributes, etc. spawns a tree of objects.
  61      *
  62      * @param v Visitor object
  63      */
  64     @Override
  65     public void accept( final Visitor v ) {
  66         v.visitParameterAnnotationEntry(this);
  67     }
  68 
  69     /**
  70      * returns the array of annotation entries in this annotation
  71      */
  72     public AnnotationEntry[] getAnnotationEntries() {
  73         return annotation_table;
  74     }
  75 
  76     public void dump(final DataOutputStream dos) throws IOException {
  77         dos.writeShort(annotation_table.length);
  78         for (final AnnotationEntry entry : annotation_table) {
  79             entry.dump(dos);
  80         }
  81     }
  82 
  83   public static ParameterAnnotationEntry[] createParameterAnnotationEntries(final Attribute[] attrs) {
  84       // Find attributes that contain parameter annotation data
  85       final List<ParameterAnnotationEntry> accumulatedAnnotations = new ArrayList<>(attrs.length);
  86       for (final Attribute attribute : attrs) {
  87           if (attribute instanceof ParameterAnnotations) {
  88               final ParameterAnnotations runtimeAnnotations = (ParameterAnnotations)attribute;
  89               Collections.addAll(accumulatedAnnotations, runtimeAnnotations.getParameterAnnotationEntries());
  90           }
  91       }
  92       return accumulatedAnnotations.toArray(new ParameterAnnotationEntry[accumulatedAnnotations.size()]);
  93   }
  94 }