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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/DerivedName.txt` file.
///
/// This file gives the derived values of the Name property.
#[derive(Clone, Debug, Default, Eq, PartialEq)]
pub struct DerivedName {
/// The codepoint or codepoint range for this entry.
pub codepoints: Codepoints,
/// The derived Name of the codepoints in this entry.
pub name: String,
}
impl UcdFile for DerivedName {
fn relative_file_path() -> &'static Path {
Path::new("extracted/DerivedName.txt")
}
}
impl UcdFileByCodepoint for DerivedName {
fn codepoints(&self) -> CodepointIter {
self.codepoints.into_iter()
}
}
impl FromStr for DerivedName {
type Err = Error;
fn from_str(line: &str) -> Result<DerivedName, Error> {
let (codepoints, name) = parse_codepoint_association(line)?;
Ok(DerivedName { codepoints, name: name.to_string() })
}
}
#[cfg(test)]
mod tests {
use super::DerivedName;
#[test]
fn parse_single() {
let line = "0021 ; EXCLAMATION MARK\n";
let row: DerivedName = line.parse().unwrap();
assert_eq!(row.codepoints, 0x0021);
assert_eq!(row.name, "EXCLAMATION MARK");
}
#[test]
fn parse_range() {
let line = "3400..4DBF ; CJK UNIFIED IDEOGRAPH-*\n";
let row: DerivedName = line.parse().unwrap();
assert_eq!(row.codepoints, (0x3400, 0x4DBF));
assert_eq!(row.name, "CJK UNIFIED IDEOGRAPH-*");
}
}
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