Files
ghostty-rs/crates/ghostty-unicode/src/symbols_table.rs
T
ddidderr 5b8c92b98c feat(unicode,datastruct): port Unicode tables and data structures
ghostty-unicode: Ghostty computes codepoint properties with the uucode
Zig package (v0.2.0, Unicode 17.0.0). There is no Rust equivalent, so
a trimmed UCD set is vendored in ucd/ and build.rs re-implements
uucode's derivations: cell width rules incl. Ghostty's overrides for
emoji modifiers and Prepend, grapheme break classes with the
compile-time grapheme_break state table, the is_symbol set, and emoji
presentation. Lookups are three array indexes per codepoint. Validated
against the official GraphemeBreakTest.txt.

ghostty-datastruct: split_tree (used for GTK splits; f16 ratios so
rounding and debug diagrams match Zig), circ_buf, lru, cache_table,
blocking_queue, segmented_pool, message_data, comparison,
array_list_collection. intrusive_linked_list is not needed (lru is
index based). lru now reports the evicted (old) key, Zig reported the
new key, which appears to be a bug.

Not yet covered: case_folding_full (needed by input bindings).

Test Plan:
- cargo test -p ghostty-unicode (16) -p ghostty-datastruct (88)
- cargo clippy for both crates with -D warnings
2026-10-11 21:54:57 +02:00

20 lines
481 B
Rust

//! The generated `is_symbol` lookup table (used by the renderer for constraint width) (`symbols_table.zig`). Generated by
//! `build.rs`.
use crate::lut::Tables;
mod generated {
include!(concat!(env!("OUT_DIR"), "/symbols_tables.rs"));
}
/// The lookup table (codepoint -> bool).
#[inline]
#[must_use]
pub fn table() -> Tables<'static, bool> {
Tables {
stage1: &generated::STAGE1,
stage2: &generated::STAGE2,
stage3: &generated::STAGE3,
}
}