swc_ecma_utils/
ident.rs

1use swc_atoms::Atom;
2use swc_common::SyntaxContext;
3use swc_ecma_ast::{unsafe_id_from_ident, BindingIdent, Id, Ident, UnsafeId};
4
5pub trait IdentLike: Sized + Send + Sync + 'static {
6    fn from_ident(i: &Ident) -> Self;
7    fn to_id(&self) -> Id;
8    fn into_id(self) -> Id;
9}
10
11impl IdentLike for Atom {
12    fn from_ident(i: &Ident) -> Self {
13        i.sym.clone()
14    }
15
16    fn to_id(&self) -> Id {
17        (self.clone(), Default::default())
18    }
19
20    fn into_id(self) -> Id {
21        (self, Default::default())
22    }
23}
24
25impl IdentLike for BindingIdent {
26    fn from_ident(i: &Ident) -> Self {
27        i.clone().into()
28    }
29
30    fn to_id(&self) -> Id {
31        (self.sym.clone(), self.ctxt)
32    }
33
34    fn into_id(self) -> Id {
35        self.id.into_id()
36    }
37}
38
39impl IdentLike for (Atom, SyntaxContext) {
40    #[inline]
41    fn from_ident(i: &Ident) -> Self {
42        (i.sym.clone(), i.ctxt)
43    }
44
45    #[inline]
46    fn to_id(&self) -> Id {
47        (self.0.clone(), self.1)
48    }
49
50    #[inline]
51    fn into_id(self) -> Id {
52        self
53    }
54}
55
56impl IdentLike for Ident {
57    #[inline]
58    fn from_ident(i: &Ident) -> Self {
59        Ident::new(i.sym.clone(), i.span, i.ctxt)
60    }
61
62    #[inline]
63    fn to_id(&self) -> Id {
64        (self.sym.clone(), self.ctxt)
65    }
66
67    #[inline]
68    fn into_id(self) -> Id {
69        (self.sym, self.ctxt)
70    }
71}
72
73impl IdentLike for UnsafeId {
74    fn from_ident(i: &Ident) -> Self {
75        unsafe { unsafe_id_from_ident(i) }
76    }
77
78    fn to_id(&self) -> Id {
79        unreachable!("UnsafeId.to_id() is not allowed because it is very likely to be unsafe")
80    }
81
82    fn into_id(self) -> Id {
83        unreachable!("UnsafeId.into_id() is not allowed because it is very likely to be unsafe")
84    }
85}
swc_ecma_utils/ident.rs

swc_ecma_utils/
ident.rs
