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
use crate::{
exec::Executable,
gc::{Finalize, Trace},
syntax::ast::node::Node,
Context, JsResult, JsValue,
};
use std::fmt;
#[cfg(feature = "deser")]
use serde::{Deserialize, Serialize};
#[cfg_attr(feature = "deser", derive(Serialize, Deserialize))]
#[derive(Clone, Debug, Trace, Finalize, PartialEq)]
pub struct ConditionalOp {
condition: Box<Node>,
if_true: Box<Node>,
if_false: Box<Node>,
}
impl ConditionalOp {
pub fn cond(&self) -> &Node {
&self.condition
}
pub fn if_true(&self) -> &Node {
&self.if_true
}
pub fn if_false(&self) -> &Node {
&self.if_false
}
pub fn new<C, T, F>(condition: C, if_true: T, if_false: F) -> Self
where
C: Into<Node>,
T: Into<Node>,
F: Into<Node>,
{
Self {
condition: Box::new(condition.into()),
if_true: Box::new(if_true.into()),
if_false: Box::new(if_false.into()),
}
}
}
impl Executable for ConditionalOp {
fn run(&self, context: &mut Context) -> JsResult<JsValue> {
Ok(if self.cond().run(context)?.to_boolean() {
self.if_true().run(context)?
} else {
self.if_false().run(context)?
})
}
}
impl fmt::Display for ConditionalOp {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"{} ? {} : {}",
self.cond(),
self.if_true(),
self.if_false()
)
}
}
impl From<ConditionalOp> for Node {
fn from(cond_op: ConditionalOp) -> Node {
Self::ConditionalOp(cond_op)
}
}