neon/types_impl/extract/
try_into_js.rs

1use crate::{
2    context::{Context, Cx},
3    handle::{Handle, Root},
4    object::Object,
5    result::{JsResult, ResultExt, Throw},
6    types::{
7        extract::{Date, TryIntoJs},
8        JsBoolean, JsDate, JsNumber, JsString, JsUndefined, JsValue, Value,
9    },
10};
11
12impl<'cx, T> TryIntoJs<'cx> for Handle<'cx, T>
13where
14    T: Value,
15{
16    type Value = T;
17
18    fn try_into_js(self, _cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
19        Ok(self)
20    }
21}
22
23impl<'cx, O> TryIntoJs<'cx> for Root<O>
24where
25    O: Object,
26{
27    type Value = O;
28
29    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
30        Ok(self.into_inner(cx))
31    }
32}
33
34impl<'cx, T, E> TryIntoJs<'cx> for Result<T, E>
35where
36    T: TryIntoJs<'cx>,
37    E: TryIntoJs<'cx>,
38{
39    type Value = T::Value;
40
41    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
42        match self {
43            Ok(v) => v.try_into_js(cx),
44            Err(err) => {
45                let err = err.try_into_js(cx)?;
46
47                cx.throw(err)
48            }
49        }
50    }
51}
52
53impl<'cx> TryIntoJs<'cx> for Throw {
54    type Value = JsValue;
55
56    fn try_into_js(self, _cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
57        Err(self)
58    }
59}
60
61impl<'cx, T> TryIntoJs<'cx> for Option<T>
62where
63    T: TryIntoJs<'cx>,
64{
65    type Value = JsValue;
66
67    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
68        if let Some(val) = self {
69            val.try_into_js(cx).map(|v| v.upcast())
70        } else {
71            Ok(cx.undefined().upcast())
72        }
73    }
74}
75
76impl<'cx, T> TryIntoJs<'cx> for Box<T>
77where
78    T: TryIntoJs<'cx>,
79{
80    type Value = T::Value;
81
82    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
83        (*self).try_into_js(cx)
84    }
85}
86
87macro_rules! impl_number {
88    ($ty:ident) => {
89        impl<'cx> TryIntoJs<'cx> for $ty {
90            type Value = JsNumber;
91
92            fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
93                Ok(cx.number(self))
94            }
95        }
96    };
97
98    ($($ty:ident),* $(,)?) => {
99        $(
100            impl_number!($ty);
101        )*
102    }
103}
104
105impl_number!(u8, u16, u32, i8, i16, i32, f32, f64);
106
107impl<'cx> TryIntoJs<'cx> for String {
108    type Value = JsString;
109
110    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
111        Ok(cx.string(self))
112    }
113}
114
115impl<'a, 'cx> TryIntoJs<'cx> for &'a str {
116    type Value = JsString;
117
118    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
119        Ok(cx.string(self))
120    }
121}
122
123impl<'a, 'cx> TryIntoJs<'cx> for &'a String {
124    type Value = JsString;
125
126    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
127        Ok(cx.string(self))
128    }
129}
130
131impl<'cx> TryIntoJs<'cx> for bool {
132    type Value = JsBoolean;
133
134    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
135        Ok(cx.boolean(self))
136    }
137}
138
139impl<'cx> TryIntoJs<'cx> for () {
140    type Value = JsUndefined;
141
142    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
143        Ok(cx.undefined())
144    }
145}
146
147impl<'cx> TryIntoJs<'cx> for Date {
148    type Value = JsDate;
149
150    fn try_into_js(self, cx: &mut Cx<'cx>) -> JsResult<'cx, Self::Value> {
151        cx.date(self.0).or_throw(cx)
152    }
153}
neon/types_impl/extract/try_into_js.rs

neon/types_impl/extract/
try_into_js.rs
