forked from XWxiaowei/JavaCode
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathSignStyle.java
More file actions
139 lines (134 loc) · 4.26 KB
/
SignStyle.java
File metadata and controls
139 lines (134 loc) · 4.26 KB
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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/*
* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
/*
*
*
*
*
*
* Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of JSR-310 nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package java.time.format;
/**
* Enumeration of ways to handle the positive/negative sign.
* <p>
* The formatting engine allows the positive and negative signs of numbers
* to be controlled using this enum.
* See {@link DateTimeFormatterBuilder} for usage.
*
* @implSpec
* This is an immutable and thread-safe enum.
*
* @since 1.8
*/
public enum SignStyle {
/**
* Style to output the sign only if the value is negative.
* <p>
* In strict parsing, the negative sign will be accepted and the positive sign rejected.
* In lenient parsing, any sign will be accepted.
*/
NORMAL,
/**
* Style to always output the sign, where zero will output '+'.
* <p>
* In strict parsing, the absence of a sign will be rejected.
* In lenient parsing, any sign will be accepted, with the absence
* of a sign treated as a positive number.
*/
ALWAYS,
/**
* Style to never output sign, only outputting the absolute value.
* <p>
* In strict parsing, any sign will be rejected.
* In lenient parsing, any sign will be accepted unless the width is fixed.
*/
NEVER,
/**
* Style to block negative values, throwing an exception on printing.
* <p>
* In strict parsing, any sign will be rejected.
* In lenient parsing, any sign will be accepted unless the width is fixed.
*/
NOT_NEGATIVE,
/**
* Style to always output the sign if the value exceeds the pad width.
* A negative value will always output the '-' sign.
* <p>
* In strict parsing, the sign will be rejected unless the pad width is exceeded.
* In lenient parsing, any sign will be accepted, with the absence
* of a sign treated as a positive number.
*/
EXCEEDS_PAD;
/**
* Parse helper.
*
* @param positive true if positive sign parsed, false for negative sign
* @param strict true if strict, false if lenient
* @param fixedWidth true if fixed width, false if not
* @return
*/
boolean parse(boolean positive, boolean strict, boolean fixedWidth) {
switch (ordinal()) {
case 0: // NORMAL
// valid if negative or (positive and lenient)
return !positive || !strict;
case 1: // ALWAYS
case 4: // EXCEEDS_PAD
return true;
default:
// valid if lenient and not fixed width
return !strict && !fixedWidth;
}
}
}