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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
use std::fmt;
use ra_syntax::{ast, SmolStr};
/// `Name` is a wrapper around string, which is used in hir for both references
/// and declarations. In theory, names should also carry hygiene info, but we are
/// not there yet!
#[derive(Clone, PartialEq, Eq, Hash)]
pub struct Name {
text: SmolStr,
}
impl fmt::Display for Name {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Display::fmt(&self.text, f)
}
}
impl fmt::Debug for Name {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Debug::fmt(&self.text, f)
}
}
impl Name {
/// Note: this is private to make creating name from random string hard.
/// Hopefully, this should allow us to integrate hygiene cleaner in the
/// future, and to switch to interned representation of names.
fn new(text: SmolStr) -> Name {
Name { text }
}
pub(crate) fn missing() -> Name {
Name::new("[missing name]".into())
}
pub(crate) fn self_param() -> Name {
Name::new("self".into())
}
pub(crate) fn self_type() -> Name {
Name::new("Self".into())
}
pub(crate) fn tuple_field_name(idx: usize) -> Name {
Name::new(idx.to_string().into())
}
pub(crate) fn as_known_name(&self) -> Option<KnownName> {
let name = match self.text.as_str() {
"isize" => KnownName::Isize,
"i8" => KnownName::I8,
"i16" => KnownName::I16,
"i32" => KnownName::I32,
"i64" => KnownName::I64,
"i128" => KnownName::I128,
"usize" => KnownName::Usize,
"u8" => KnownName::U8,
"u16" => KnownName::U16,
"u32" => KnownName::U32,
"u64" => KnownName::U64,
"u128" => KnownName::U128,
"f32" => KnownName::F32,
"f64" => KnownName::F64,
"bool" => KnownName::Bool,
"char" => KnownName::Char,
"str" => KnownName::Str,
"Self" => KnownName::SelfType,
"self" => KnownName::SelfParam,
"macro_rules" => KnownName::MacroRules,
_ => return None,
};
Some(name)
}
}
pub(crate) trait AsName {
fn as_name(&self) -> Name;
}
impl AsName for ast::NameRef {
fn as_name(&self) -> Name {
Name::new(self.text().clone())
}
}
impl AsName for ast::Name {
fn as_name(&self) -> Name {
Name::new(self.text().clone())
}
}
impl AsName for ra_db::Dependency {
fn as_name(&self) -> Name {
Name::new(self.name.clone())
}
}
// Ideally, should be replaced with
// ```
// const ISIZE: Name = Name::new("isize")
// ```
// but const-fn is not that powerful yet.
#[derive(Debug, PartialEq, Eq)]
pub(crate) enum KnownName {
Isize,
I8,
I16,
I32,
I64,
I128,
Usize,
U8,
U16,
U32,
U64,
U128,
F32,
F64,
Bool,
Char,
Str,
SelfType,
SelfParam,
MacroRules,
}
|
