| use std::path::Path; |
| |
| use crate::{ |
| common::{ |
| parse_codepoint_association, CodepointIter, Codepoints, UcdFile, |
| UcdFileByCodepoint, |
| }, |
| error::Error, |
| }; |
| |
| /// A single row in the `extracted/DerivedEastAsianWidth.txt` file. |
| /// |
| /// This file gives the derived values of the East_Asian_Width |
| /// property. |
| #[derive(Clone, Debug, Default, Eq, PartialEq)] |
| pub struct DerivedEastAsianWidth { |
| /// The codepoint or codepoint range for this entry. |
| pub codepoints: Codepoints, |
| /// The derived East_Asian_Width of the codepoints in this entry. |
| pub east_asian_width: String, |
| } |
| |
| impl UcdFile for DerivedEastAsianWidth { |
| fn relative_file_path() -> &'static Path { |
| Path::new("extracted/DerivedEastAsianWidth.txt") |
| } |
| } |
| |
| impl UcdFileByCodepoint for DerivedEastAsianWidth { |
| fn codepoints(&self) -> CodepointIter { |
| self.codepoints.into_iter() |
| } |
| } |
| |
| impl std::str::FromStr for DerivedEastAsianWidth { |
| type Err = Error; |
| |
| fn from_str(line: &str) -> Result<DerivedEastAsianWidth, Error> { |
| let (codepoints, east_asian_width) = |
| parse_codepoint_association(line)?; |
| Ok(DerivedEastAsianWidth { |
| codepoints, |
| east_asian_width: east_asian_width.to_string(), |
| }) |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use super::DerivedEastAsianWidth; |
| |
| #[test] |
| fn parse_single() { |
| let line = "00A0 ; N # Zs NO-BREAK SPACE\n"; |
| let row: DerivedEastAsianWidth = line.parse().unwrap(); |
| assert_eq!(row.codepoints, 0x00A0); |
| assert_eq!(row.east_asian_width, "N"); |
| } |
| |
| #[test] |
| fn parse_range() { |
| let line = "FF10..FF19 ; F # Nd [10] FULLWIDTH DIGIT ZERO..FULLWIDTH DIGIT NINE\n"; |
| let row: DerivedEastAsianWidth = line.parse().unwrap(); |
| assert_eq!(row.codepoints, (0xFF10, 0xFF19)); |
| assert_eq!(row.east_asian_width, "F"); |
| } |
| } |