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
132
133
134
135
136
137
138
139
140
141
142
|
//! FIXME: write short doc here
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(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct Name(Repr);
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
enum Repr {
Text(SmolStr),
TupleField(usize),
}
impl fmt::Display for Name {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match &self.0 {
Repr::Text(text) => fmt::Display::fmt(&text, f),
Repr::TupleField(idx) => fmt::Display::fmt(&idx, 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.
const fn new_text(text: SmolStr) -> Name {
Name(Repr::Text(text))
}
pub(crate) fn new_tuple_field(idx: usize) -> Name {
Name(Repr::TupleField(idx))
}
/// Shortcut to create inline plain text name
const fn new_inline_ascii(len: usize, text: &[u8]) -> Name {
Name::new_text(SmolStr::new_inline_from_ascii(len, text))
}
/// Resolve a name from the text of token.
fn resolve(raw_text: &SmolStr) -> Name {
let raw_start = "r#";
if raw_text.as_str().starts_with(raw_start) {
Name::new_text(SmolStr::new(&raw_text[raw_start.len()..]))
} else {
Name::new_text(raw_text.clone())
}
}
pub(crate) fn missing() -> Name {
Name::new_text("[missing name]".into())
}
pub(crate) fn as_tuple_index(&self) -> Option<usize> {
match self.0 {
Repr::TupleField(idx) => Some(idx),
_ => None,
}
}
}
pub(crate) trait AsName {
fn as_name(&self) -> Name;
}
impl AsName for ast::NameRef {
fn as_name(&self) -> Name {
match self.as_tuple_field() {
Some(idx) => Name::new_tuple_field(idx),
None => Name::resolve(self.text()),
}
}
}
impl AsName for ast::Name {
fn as_name(&self) -> Name {
Name::resolve(self.text())
}
}
impl AsName for ast::FieldKind {
fn as_name(&self) -> Name {
match self {
ast::FieldKind::Name(nr) => nr.as_name(),
ast::FieldKind::Index(idx) => Name::new_tuple_field(idx.text().parse().unwrap()),
}
}
}
impl AsName for ra_db::Dependency {
fn as_name(&self) -> Name {
Name::new_text(self.name.clone())
}
}
// Primitives
pub(crate) const ISIZE: Name = Name::new_inline_ascii(5, b"isize");
pub(crate) const I8: Name = Name::new_inline_ascii(2, b"i8");
pub(crate) const I16: Name = Name::new_inline_ascii(3, b"i16");
pub(crate) const I32: Name = Name::new_inline_ascii(3, b"i32");
pub(crate) const I64: Name = Name::new_inline_ascii(3, b"i64");
pub(crate) const I128: Name = Name::new_inline_ascii(4, b"i128");
pub(crate) const USIZE: Name = Name::new_inline_ascii(5, b"usize");
pub(crate) const U8: Name = Name::new_inline_ascii(2, b"u8");
pub(crate) const U16: Name = Name::new_inline_ascii(3, b"u16");
pub(crate) const U32: Name = Name::new_inline_ascii(3, b"u32");
pub(crate) const U64: Name = Name::new_inline_ascii(3, b"u64");
pub(crate) const U128: Name = Name::new_inline_ascii(4, b"u128");
pub(crate) const F32: Name = Name::new_inline_ascii(3, b"f32");
pub(crate) const F64: Name = Name::new_inline_ascii(3, b"f64");
pub(crate) const BOOL: Name = Name::new_inline_ascii(4, b"bool");
pub(crate) const CHAR: Name = Name::new_inline_ascii(4, b"char");
pub(crate) const STR: Name = Name::new_inline_ascii(3, b"str");
// Special names
pub(crate) const SELF_PARAM: Name = Name::new_inline_ascii(4, b"self");
pub(crate) const SELF_TYPE: Name = Name::new_inline_ascii(4, b"Self");
pub(crate) const MACRO_RULES: Name = Name::new_inline_ascii(11, b"macro_rules");
// Components of known path (value or mod name)
pub(crate) const STD: Name = Name::new_inline_ascii(3, b"std");
pub(crate) const ITER: Name = Name::new_inline_ascii(4, b"iter");
pub(crate) const OPS: Name = Name::new_inline_ascii(3, b"ops");
pub(crate) const FUTURE: Name = Name::new_inline_ascii(6, b"future");
pub(crate) const RESULT: Name = Name::new_inline_ascii(6, b"result");
pub(crate) const BOXED: Name = Name::new_inline_ascii(5, b"boxed");
// Components of known path (type name)
pub(crate) const INTO_ITERATOR_TYPE: Name = Name::new_inline_ascii(12, b"IntoIterator");
pub(crate) const ITEM_TYPE: Name = Name::new_inline_ascii(4, b"Item");
pub(crate) const TRY_TYPE: Name = Name::new_inline_ascii(3, b"Try");
pub(crate) const OK_TYPE: Name = Name::new_inline_ascii(2, b"Ok");
pub(crate) const FUTURE_TYPE: Name = Name::new_inline_ascii(6, b"Future");
pub(crate) const RESULT_TYPE: Name = Name::new_inline_ascii(6, b"Result");
pub(crate) const OUTPUT_TYPE: Name = Name::new_inline_ascii(6, b"Output");
pub(crate) const TARGET_TYPE: Name = Name::new_inline_ascii(6, b"Target");
pub(crate) const BOX_TYPE: Name = Name::new_inline_ascii(3, b"Box");
|
