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fix: 正则 v 标志零宽推进按码点口径

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彭俊皓
2026-09-25 14:17:21 +00:00
parent 2584ec0b9b
commit fdd4783701
2 changed files with 37 additions and 7 deletions
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crates/oxide_vm/tests/builtins_regexp_tests.rs
+20
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@@ -1168,3 +1168,23 @@ fn regexp_replace_results_groups_to_object_and_receiver() {
.unwrap();
assert_eq!(to_str(&vm, result), "E");
}
#[test]
fn regexp_v_flag_zero_width_surrogate_pair_match_returns() {
// 回归钉：v 标志零宽正则对含代理对串必须返回匹配（零宽推进按码点口径，
// 与 exec 起点钳制自洽），不无限循环；replace/split 同族同口径。
let mut vm = Vm::new();
let result = eval(&mut vm, "var m = '𠮷a'.match(/(?:)/gv); m.length + ':' + m.join('|')").unwrap();
assert_eq!(to_str(&vm, result), "3:||");
let result = eval(&mut vm, "'𠮷a'.replace(/(?:)/gv, 'x')").unwrap();
assert_eq!(to_str(&vm, result), "x𠮷xax");
let result = eval(&mut vm, "var m = '𠮷a'.split(/(?:)/gv); m.length + ':' + m.join('|')").unwrap();
assert_eq!(to_str(&vm, result), "2:𠮷|a");
let result = eval(&mut vm, "var m = /(?:)/gv.exec('𠮷a'); m.length + ':' + m[0].length").unwrap();
assert_eq!(to_str(&vm, result), "1:0");
// u 标志与无标志面零回归（同串同零宽模式）。
let result = eval(&mut vm, "var m = '𠮷a'.match(/(?:)/gu); m.length + ':' + m.join('|')").unwrap();
assert_eq!(to_str(&vm, result), "3:||");
let result = eval(&mut vm, "var m = '𠮷a'.match(/(?:)/g); m.length + ':' + m.join('|')").unwrap();
assert_eq!(to_str(&vm, result), "4:|||");
}