1 /*
 2  * Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package jdk.internal.classfile.impl;
27 
28 import java.lang.classfile.CustomAttribute;
29 import java.lang.classfile.FieldBuilder;
30 import java.lang.classfile.FieldElement;
31 import java.lang.classfile.FieldModel;
32 import java.lang.classfile.constantpool.Utf8Entry;
33 import java.util.function.Consumer;
34 
35 import static java.util.Objects.requireNonNull;
36 
37 public final class DirectFieldBuilder
38         extends AbstractDirectBuilder<FieldModel>
39         implements TerminalFieldBuilder, Util.Writable {
40     private final Utf8Entry name;
41     private final Utf8Entry desc;
42     private int flags;
43 
44     public DirectFieldBuilder(SplitConstantPool constantPool,
45                               ClassFileImpl context,
46                               Utf8Entry name,
47                               Utf8Entry type,
48                               int flags,
49                               FieldModel original) {
50         super(constantPool, context);
51         setOriginal(original);
52         this.name = requireNonNull(name);
53         this.desc = requireNonNull(type);
54         this.flags = flags;
55     }
56 
57     @Override
58     public FieldBuilder with(FieldElement element) {
59         if (element instanceof AbstractElement ae) {
60             ae.writeTo(this);
61         } else {
62             writeAttribute((CustomAttribute<?>) requireNonNull(element));
63         }
64         return this;
65     }
66 
67     public DirectFieldBuilder run(Consumer<? super FieldBuilder> handler) {
68         handler.accept(this);
69         return this;
70     }
71 
72     @Override
73     public FieldBuilder withFlags(int flags) {
74         setFlags(flags);
75         return this;
76     }
77 
78     void setFlags(int flags) {
79         this.flags = flags;
80     }
81 
82     @Override
83     public void writeTo(BufWriterImpl buf) {
84         buf.writeU2U2U2(flags, buf.cpIndex(name), buf.cpIndex(desc));
85         attributes.writeTo(buf);
86     }
87 }