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  * @version $Id: ParameterAnnotationEntry
  35  * @since 6.0
  36  */
  37 public class ParameterAnnotationEntry implements Node {
  38 
  39     private final AnnotationEntry[] annotation_table;
  40 
  41 
  42     /**
  43      * Construct object from input stream.
  44      *
  45      * @param input Input stream
  46      * @throws IOException
  47      */
  48     ParameterAnnotationEntry(final DataInput input, final ConstantPool constant_pool) throws IOException {
  49         final int annotation_table_length = input.readUnsignedShort();
  50         annotation_table = new AnnotationEntry[annotation_table_length];
  51         for (int i = 0; i < annotation_table_length; i++) {
  52             // TODO isRuntimeVisible
  53             annotation_table[i] = AnnotationEntry.read(input, constant_pool, false);
  54         }
  55     }
  56 
  57 
  58     /**
  59      * Called by objects that are traversing the nodes of the tree implicitely
  60      * defined by the contents of a Java class. I.e., the hierarchy of methods,
  61      * fields, attributes, etc. spawns a tree of objects.
  62      *
  63      * @param v Visitor object
  64      */
  65     @Override
  66     public void accept( final Visitor v ) {
  67         v.visitParameterAnnotationEntry(this);
  68     }
  69 
  70     /**
  71      * returns the array of annotation entries in this annotation
  72      */
  73     public AnnotationEntry[] getAnnotationEntries() {
  74         return annotation_table;
  75     }
  76 
  77     public void dump(final DataOutputStream dos) throws IOException {
  78         dos.writeShort(annotation_table.length);
  79         for (final AnnotationEntry entry : annotation_table) {
  80             entry.dump(dos);
  81         }
  82     }
  83 
  84   public static ParameterAnnotationEntry[] createParameterAnnotationEntries(final Attribute[] attrs) {
  85       // Find attributes that contain parameter annotation data
  86       final List<ParameterAnnotationEntry> accumulatedAnnotations = new ArrayList<>(attrs.length);
  87       for (final Attribute attribute : attrs) {
  88           if (attribute instanceof ParameterAnnotations) {
  89               final ParameterAnnotations runtimeAnnotations = (ParameterAnnotations)attribute;
  90               Collections.addAll(accumulatedAnnotations, runtimeAnnotations.getParameterAnnotationEntries());
  91           }
  92       }
  93       return accumulatedAnnotations.toArray(new ParameterAnnotationEntry[accumulatedAnnotations.size()]);
  94   }
  95 }