hunt.sql.dialect.postgresql.ast.expr.PGBoxExpr source code

1 /*
2  * Copyright 2015-2018 HuntLabs.cn
3  *
4  * Licensed under the Apache License, 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, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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.dialect.postgresql.ast.expr.PGBoxExpr;
17 
18 import hunt.sql.ast.SQLExpr;
19 import hunt.sql.ast.SQLObject;
20 import hunt.sql.dialect.postgresql.visitor.PGASTVisitor;
21 import hunt.sql.dialect.postgresql.ast.expr.PGExprImpl;
22 
23 
24 import hunt.collection;
25 
26 public class PGBoxExpr : PGExprImpl {
27      alias accept0 = PGExprImpl.accept0;
28     private SQLExpr value;
29 
30     override public PGBoxExpr clone() {
31         PGBoxExpr x = new PGBoxExpr();
32         if (value !is null) {
33             x.setValue(value.clone());
34         }
35         return x;
36     }
37 
38     public SQLExpr getValue() {
39         return value;
40     }
41 
42     public void setValue(SQLExpr value) {
43         this.value = value;
44     }
45 
46     override
47     public void accept0(PGASTVisitor visitor) {
48         if (visitor.visit(this)) {
49             acceptChild(visitor, value);
50         }
51         visitor.endVisit(this);
52     }
53 
54     override public List!(SQLObject) getChildren() {
55         return Collections.singletonList!(SQLObject)(value);
56     }
57 
58     override
59     public size_t toHash() @trusted nothrow {
60          int prime = 31;
61         size_t result = 1;
62         result = prime * result + ((value is null) ? 0 : (cast(Object)value).toHash());
63         return result;
64     }
65 
66     override
67     public bool opEquals(Object obj) {
68         if (this == obj) {
69             return true;
70         }
71         if (obj is null) {
72             return false;
73         }
74         if ( typeid(this) != typeid(obj)) {
75             return false;
76         }
77         PGBoxExpr other = cast(PGBoxExpr) obj;
78         if (value is null) {
79             if (other.value !is null) {
80                 return false;
81             }
82         } else if (!(cast(Object)(value)).opEquals(cast(Object)(other.value))) {
83             return false;
84         }
85         return true;
86     }
87 
88 }