1/***
2 * ASM: a very small and fast Java bytecode manipulation framework
3 * Copyright (c) 2000-2007 INRIA, France Telecom
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the copyright holders nor the names of its
15 *    contributors may be used to endorse or promote products derived from
16 *    this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
29 */
30package org.mockito.asm.util;
31
32import org.mockito.asm.AnnotationVisitor;
33import org.mockito.asm.Attribute;
34import org.mockito.asm.FieldVisitor;
35
36/**
37 * A {@link FieldVisitor} that checks that its methods are properly used.
38 */
39public class CheckFieldAdapter implements FieldVisitor {
40
41    private final FieldVisitor fv;
42
43    private boolean end;
44
45    public CheckFieldAdapter(final FieldVisitor fv) {
46        this.fv = fv;
47    }
48
49    public AnnotationVisitor visitAnnotation(
50        final String desc,
51        final boolean visible)
52    {
53        checkEnd();
54        CheckMethodAdapter.checkDesc(desc, false);
55        return new CheckAnnotationAdapter(fv.visitAnnotation(desc, visible));
56    }
57
58    public void visitAttribute(final Attribute attr) {
59        checkEnd();
60        if (attr == null) {
61            throw new IllegalArgumentException("Invalid attribute (must not be null)");
62        }
63        fv.visitAttribute(attr);
64    }
65
66    public void visitEnd() {
67        checkEnd();
68        end = true;
69        fv.visitEnd();
70    }
71
72    private void checkEnd() {
73        if (end) {
74            throw new IllegalStateException("Cannot call a visit method after visitEnd has been called");
75        }
76    }
77}
78