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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
use crate::error::PrinterErrorKind;
use crate::properties::css_modules::{Composes, ComposesFrom};
use crate::selector::Selectors;
use data_encoding::{Encoding, Specification};
use lazy_static::lazy_static;
use parcel_selectors::SelectorList;
use serde::Serialize;
use std::collections::hash_map::DefaultHasher;
use std::collections::HashMap;
use std::hash::{Hash, Hasher};
#[derive(PartialEq, Debug, Clone, Serialize)]
#[serde(tag = "type", rename_all = "lowercase")]
pub enum CssModuleReference {
Local {
name: String,
},
Global {
name: String,
},
Dependency {
name: String,
specifier: String,
},
}
#[derive(PartialEq, Debug, Clone, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct CssModuleExport {
pub name: String,
pub composes: Vec<CssModuleReference>,
pub is_referenced: bool,
}
pub type CssModuleExports = HashMap<String, CssModuleExport>;
lazy_static! {
static ref ENCODER: Encoding = {
let mut spec = Specification::new();
spec
.symbols
.push_str("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_-");
spec.encoding().unwrap()
};
}
pub(crate) struct CssModule<'a> {
pub hash: &'a str,
pub exports: &'a mut CssModuleExports,
}
impl<'a> CssModule<'a> {
pub fn add_local(&mut self, exported: &str, local: &str) {
self.exports.entry(exported.into()).or_insert_with(|| CssModuleExport {
name: get_hashed_name(self.hash, local),
composes: vec![],
is_referenced: false,
});
}
pub fn reference(&mut self, name: &str) {
match self.exports.entry(name.into()) {
std::collections::hash_map::Entry::Occupied(mut entry) => {
entry.get_mut().is_referenced = true;
}
std::collections::hash_map::Entry::Vacant(entry) => {
entry.insert(CssModuleExport {
name: get_hashed_name(self.hash, name),
composes: vec![],
is_referenced: true,
});
}
}
}
pub fn handle_composes(
&mut self,
selectors: &SelectorList<Selectors>,
composes: &Composes,
) -> Result<(), PrinterErrorKind> {
for sel in &selectors.0 {
if sel.len() == 1 {
match sel.iter_raw_match_order().next().unwrap() {
parcel_selectors::parser::Component::Class(ref id) => {
for name in &composes.names {
let reference = match &composes.from {
None => CssModuleReference::Local {
name: get_hashed_name(self.hash, name.0.as_ref()),
},
Some(ComposesFrom::Global) => CssModuleReference::Global {
name: name.0.as_ref().into(),
},
Some(ComposesFrom::File(file)) => CssModuleReference::Dependency {
name: name.0.to_string(),
specifier: file.to_string(),
},
};
let export = self.exports.get_mut(&id.0.as_ref().to_owned()).unwrap();
if !export.composes.contains(&reference) {
export.composes.push(reference);
}
}
continue;
}
_ => {}
}
}
return Err(PrinterErrorKind::InvalidComposesSelector);
}
Ok(())
}
}
fn get_hashed_name(hash: &str, name: &str) -> String {
format!("{}_{}", hash, name)
}
pub(crate) fn hash(s: &str) -> String {
let mut hasher = DefaultHasher::new();
s.hash(&mut hasher);
let hash = hasher.finish() as u32;
let hash = ENCODER.encode(&hash.to_le_bytes());
if matches!(hash.as_bytes()[0], b'0'..=b'9') {
format!("_{}", hash)
} else {
hash
}
}