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
|
use std::path::Path;
use std::str::FromStr;
use crate::common::{
parse_codepoint_association, CodepointIter, Codepoints, UcdFile,
UcdFileByCodepoint,
};
use crate::error::Error;
/// A single row in the `extracted/DerivedCombiningClass.txt` file.
///
/// This file gives the derived values of the Canonical_Combining_Class
/// property.
#[derive(Clone, Debug, Default, Eq, PartialEq)]
pub struct DerivedCombiningClass {
/// The codepoint or codepoint range for this entry.
pub codepoints: Codepoints,
/// The derived Canonical_Combining_Class of the codepoints in this entry.
pub combining_class: String,
}
impl UcdFile for DerivedCombiningClass {
fn relative_file_path() -> &'static Path {
Path::new("extracted/DerivedCombiningClass.txt")
}
}
impl UcdFileByCodepoint for DerivedCombiningClass {
fn codepoints(&self) -> CodepointIter {
self.codepoints.into_iter()
}
}
impl FromStr for DerivedCombiningClass {
type Err = Error;
fn from_str(line: &str) -> Result<DerivedCombiningClass, Error> {
let (codepoints, combining_class) = parse_codepoint_association(line)?;
Ok(DerivedCombiningClass {
codepoints,
combining_class: combining_class.to_string(),
})
}
}
#[cfg(test)]
mod tests {
use super::DerivedCombiningClass;
#[test]
fn parse_single() {
let line = "0020 ; 0 # Zs SPACE\n";
let row: DerivedCombiningClass = line.parse().unwrap();
assert_eq!(row.codepoints, 0x0020);
assert_eq!(row.combining_class, "0");
}
#[test]
fn parse_range() {
let line = "1DD1..1DF5 ; 230 # Mn [37] COMBINING UR ABOVE..COMBINING UP TACK ABOVE\n";
let row: DerivedCombiningClass = line.parse().unwrap();
assert_eq!(row.codepoints, (0x1DD1, 0x1DF5));
assert_eq!(row.combining_class, "230");
}
}
|
