1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* Copyright © 2009 Reinier Zwitserloot and Roel Spilker.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Generates an implementation for the <code>toString</code> method inherited by all objects.
* <p>
* If the method already exists, then <code>@ToString</code> will not generate any method, and instead warns
* that it's doing nothing at all. The parameter list and return type are not relevant when deciding to skip generation of
* the method; any method named <code>toString</code> will make <code>@ToString</code> not generate anything.
* <p>
* All fields that are non-static are used in the toString generation. You can exclude fields by specifying them
* in the <code>exclude</code> parameter.
* <p>
* Array fields are handled by way of {@link java.util.Arrays#deepToString(Object[])} where necessary.
* The downside is that arrays with circular references (arrays that contain themselves,
* possibly indirectly) results in calls to <code>toString</code> throwing a
* {@link java.lang.StackOverflowError}. However, the implementations for java's own {@link java.util.ArrayList} suffer
* from the same flaw.
* <p>
* The <code>toString</code> method that is generated will print the class name as well as each field. You can optionally
* also print the names of each field, by setting the <code>includeFieldNames</code> flag to <em>true</em>.
* <p>
* You can also choose to include the result of <code>toString</code> in your class's superclass by setting the
* <code>callSuper</code> to <em>true</em>.
*/
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.SOURCE)
public @interface ToString {
/**
* Include the name of each field when printing it.
* <strong>default: false</strong>
*/
boolean includeFieldNames() default false;
/**
* Any fields listed here will not be printed in the generated <code>toString</code> implementation.
*/
String[] exclude() default {};
/**
* Include the result of the superclass's implementation of <code>toString</code> in the output.
* <strong>default: false</strong>
*/
boolean callSuper() default false;
}
|
