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.generic;
19 
20 import java.io.DataOutputStream;
21 import java.io.IOException;
22 import java.util.ArrayList;
23 import java.util.List;
24 
25 import org.apache.bcel.classfile.ArrayElementValue;
26 import org.apache.bcel.classfile.ElementValue;
27 
28 /**
29  * @since 6.0
30  */
31 public class ArrayElementValueGen extends ElementValueGen
32 {
33     // J5TODO: Should we make this an array or a list? A list would be easier to
34     // modify ...
35     private final List<ElementValueGen> evalues;
36 
ArrayElementValueGen(final ConstantPoolGen cp)37     public ArrayElementValueGen(final ConstantPoolGen cp)
38     {
39         super(ARRAY, cp);
40         evalues = new ArrayList<>();
41     }
42 
ArrayElementValueGen(final int type, final ElementValue[] datums, final ConstantPoolGen cpool)43     public ArrayElementValueGen(final int type, final ElementValue[] datums,
44             final ConstantPoolGen cpool)
45     {
46         super(type, cpool);
47         if (type != ARRAY) {
48             throw new RuntimeException(
49                     "Only element values of type array can be built with this ctor - type specified: " + type);
50         }
51         this.evalues = new ArrayList<>();
52         for (final ElementValue datum : datums) {
53             evalues.add(ElementValueGen.copy(datum, cpool, true));
54         }
55     }
56 
57     /**
58      * Return immutable variant of this ArrayElementValueGen
59      */
60     @Override
getElementValue()61     public ElementValue getElementValue()
62     {
63         final ElementValue[] immutableData = new ElementValue[evalues.size()];
64         int i = 0;
65         for (final ElementValueGen element : evalues) {
66             immutableData[i++] = element.getElementValue();
67         }
68         return new ArrayElementValue(super.getElementValueType(),
69                 immutableData,
70                 getConstantPool().getConstantPool());
71     }
72 
73     /**
74      * @param value
75      * @param cpool
76      */
ArrayElementValueGen(final ArrayElementValue value, final ConstantPoolGen cpool, final boolean copyPoolEntries)77     public ArrayElementValueGen(final ArrayElementValue value, final ConstantPoolGen cpool,
78             final boolean copyPoolEntries)
79     {
80         super(ARRAY, cpool);
81         evalues = new ArrayList<>();
82         final ElementValue[] in = value.getElementValuesArray();
83         for (final ElementValue element : in) {
84             evalues.add(ElementValueGen.copy(element, cpool, copyPoolEntries));
85         }
86     }
87 
88     @Override
dump(final DataOutputStream dos)89     public void dump(final DataOutputStream dos) throws IOException
90     {
91         dos.writeByte(super.getElementValueType()); // u1 type of value (ARRAY == '[')
92         dos.writeShort(evalues.size());
93         for (final ElementValueGen element : evalues) {
94             element.dump(dos);
95         }
96     }
97 
98     @Override
stringifyValue()99     public String stringifyValue()
100     {
101         final StringBuilder sb = new StringBuilder();
102         sb.append("[");
103         String comma = "";
104         for (final ElementValueGen element : evalues) {
105             sb.append(comma);
106             comma = ",";
107             sb.append(element.stringifyValue());
108         }
109         sb.append("]");
110         return sb.toString();
111     }
112 
getElementValues()113     public List<ElementValueGen> getElementValues()
114     {
115         return evalues;
116     }
117 
getElementValuesSize()118     public int getElementValuesSize()
119     {
120         return evalues.size();
121     }
122 
addElement(final ElementValueGen gen)123     public void addElement(final ElementValueGen gen)
124     {
125         evalues.add(gen);
126     }
127 }
128