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fix: String 三方法 RegExp 抛错、pad 改码元口径与 legacy receiver 窗口

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彭俊皓
2026-09-25 04:43:11 +00:00
parent 88fa1f36b1
commit 601d231ba2
3 changed files with 94 additions and 72 deletions
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crates/oxide_builtins/src/string/common.rs
-30
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@@ -189,36 +189,6 @@ fn well_formed_segment_end(units: &[u16], start: usize) -> usize {
i
}
/// 码点数（代理对计 1，孤立 surrogate 计 1）——pad 族的目标长度口径。
pub(crate) fn code_point_count(units: &[u16]) -> usize {
let mut n = 0;
let mut i = 0;
while i < units.len() {
if (0xD800..=0xDBFF).contains(&units[i]) && i + 1 < units.len() && (0xDC00..=0xDFFF).contains(&units[i + 1]) {
i += 2;
} else {
i += 1;
}
n += 1;
}
n
}
/// 取序列头 count 个码点对应的单元前缀。
pub(crate) fn take_code_points(units: &[u16], count: usize) -> &[u16] {
let mut n = 0;
let mut i = 0;
while i < units.len() && n < count {
if (0xD800..=0xDBFF).contains(&units[i]) && i + 1 < units.len() && (0xDC00..=0xDFFF).contains(&units[i + 1]) {
i += 2;
} else {
i += 1;
}
n += 1;
}
&units[..i]
}
/// ES 白空格判定的单元口径：Rust 空白表与 White_Space+LineTerminator 等价，
/// 另补 U+FEFF（ES White_Space 含 BOM，Unicode White_Space 不含）；
/// 孤立 surrogate 非白空格。