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
use crate::ast::{ConditionTree, Expression};
/// `AND`, `OR` and `NOT` conjunctive implementations.
pub trait Conjunctive<'a> {
/// Builds an `AND` condition having `self` as the left leaf and `other` as the right.
///
/// ```rust
/// # use sqlint::{ast::*, visitor::{Visitor, Sqlite}};
/// assert_eq!(
/// "foo".equals("bar").and("wtf".less_than(3)),
/// ConditionTree::And(vec![
/// Expression::from("foo".equals("bar")),
/// Expression::from("wtf".less_than(3))
/// ])
/// )
/// ```
fn and<E>(self, other: E) -> ConditionTree<'a>
where
E: Into<Expression<'a>>;
/// Builds an `OR` condition having `self` as the left leaf and `other` as the right.
///
/// ```rust
/// # use sqlint::{ast::*, visitor::{Visitor, Sqlite}};
/// assert_eq!(
/// "foo".equals("bar").or("wtf".less_than(3)),
/// ConditionTree::Or(vec![
/// Expression::from("foo".equals("bar")),
/// Expression::from("wtf".less_than(3))
/// ])
/// )
/// ```
fn or<E>(self, other: E) -> ConditionTree<'a>
where
E: Into<Expression<'a>>;
/// Builds a `NOT` condition having `self` as the condition.
///
/// ```rust
/// # use sqlint::{ast::*, visitor::{Visitor, Sqlite}};
/// assert_eq!(
/// "foo".equals("bar").not(),
/// ConditionTree::not("foo".equals("bar"))
/// )
/// ```
fn not(self) -> ConditionTree<'a>;
}
impl<'a, T> Conjunctive<'a> for T
where
T: Into<Expression<'a>>,
{
fn and<E>(self, other: E) -> ConditionTree<'a>
where
E: Into<Expression<'a>>,
{
ConditionTree::And(vec![self.into(), other.into()])
}
fn or<E>(self, other: E) -> ConditionTree<'a>
where
E: Into<Expression<'a>>,
{
ConditionTree::Or(vec![self.into(), other.into()])
}
fn not(self) -> ConditionTree<'a> {
ConditionTree::not(self.into())
}
}