hunt.sql.ast.expr.SQLIntervalUnit source code

1 /*
2  * Copyright 2015-2018 HuntLabs.cn
3  *
4  * Licensed under the Apache License = SQLIntervalUnit(""); Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing = SQLIntervalUnit(""); software
11  * distributed under the License is distributed on an "AS IS" BASIS = SQLIntervalUnit("");
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND = SQLIntervalUnit(""); either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 module hunt.sql.ast.expr.SQLIntervalUnit;
17 import std.uni;
18 
19 public struct SQLIntervalUnit {
20     enum SQLIntervalUnit YEAR = SQLIntervalUnit("YEAR"); 
21     enum SQLIntervalUnit YEAR_MONTH = SQLIntervalUnit("YEAR_MONTH");
22     enum SQLIntervalUnit QUARTER = SQLIntervalUnit("QUARTER");
23     enum SQLIntervalUnit MONTH = SQLIntervalUnit("MONTH");
24     enum SQLIntervalUnit WEEK = SQLIntervalUnit("WEEK"); 
25     enum SQLIntervalUnit DAY = SQLIntervalUnit("DAY");
26     enum SQLIntervalUnit DAY_HOUR = SQLIntervalUnit("DAY_HOUR");
27     enum SQLIntervalUnit DAY_MINUTE = SQLIntervalUnit("DAY_MINUTE");
28     enum SQLIntervalUnit DAY_SECOND = SQLIntervalUnit("DAY_SECOND");
29     enum SQLIntervalUnit DAY_MICROSECOND = SQLIntervalUnit("DAY_MICROSECOND");
30     enum SQLIntervalUnit HOUR = SQLIntervalUnit("HOUR");
31     enum SQLIntervalUnit HOUR_MINUTE = SQLIntervalUnit("HOUR_MINUTE");
32     enum SQLIntervalUnit HOUR_SECOND = SQLIntervalUnit("HOUR_SECOND");
33     enum SQLIntervalUnit HOUR_MICROSECOND = SQLIntervalUnit("HOUR_MICROSECOND");
34     enum SQLIntervalUnit MINUTE = SQLIntervalUnit("MINUTE");
35     enum SQLIntervalUnit MINUTE_SECOND = SQLIntervalUnit("MINUTE_SECOND");
36     enum SQLIntervalUnit MINUTE_MICROSECOND = SQLIntervalUnit("MINUTE_MICROSECOND");
37     enum SQLIntervalUnit SECOND = SQLIntervalUnit("SECOND");
38     enum SQLIntervalUnit SECOND_MICROSECOND = SQLIntervalUnit("SECOND_MICROSECOND");
39     enum SQLIntervalUnit MICROSECOND = SQLIntervalUnit("MICROSECOND");
40     
41     // public  string name_lcase;
42     
43     // private SQLIntervalUnit() {
44     //     this.name_lcase = name().toLowerCase();
45     // }
46     // private static SQLIntervalUnit[] _values;
47 
48     // static this()
49     // {
50     //     _values = [YEAR,YEAR_MONTH,QUARTER,MONTH,WEEK,DAY,DAY_HOUR,DAY_MINUTE,DAY_SECOND,DAY_MICROSECOND,HOUR,HOUR_MINUTE,
51     //             HOUR_SECOND,HOUR_MICROSECOND,MINUTE,MINUTE_SECOND,MINUTE_MICROSECOND,SECOND,SECOND_MICROSECOND,MICROSECOND];
52     // }
53 
54 
55     private string _name;
56 
57     this(string name)
58     {
59         _name = name;
60     }
61 
62     @property string name()
63     {
64         return _name;
65     }
66 
67     @property string name_lcase()
68     {
69         return toLower(_name);
70     }
71 
72     bool opEquals(const SQLIntervalUnit h) nothrow {
73         return _name == h._name ;
74     } 
75 
76     bool opEquals(ref const SQLIntervalUnit h) nothrow {
77         return _name == h._name ;
78     } 
79 
80 }