feat: 补全 String locale 三方法与 localeCompare 基本档

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2026-09-21 01:58:31 +00:00
parent 46211a66a5
commit 7481ceb798
6 changed files with 649 additions and 2 deletions
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//! String locale 三方法:toLocaleLowerCase / toLocaleUpperCase / localeCompare。
//!
//! toLocaleLowerCase 与 toLowerCase 同映射表,增量仅 Final Sigma 条件映射
//! (σ/ς 判定按原始单元序列、双向跳过 Mn/Cf 找最近可见字符);
//! toLocaleUpperCase 与 toUpperCase 同表无条件映射;localeCompare 基本档 =
//! NFC 归一后 UTF-16 单元序比较,第二参缺省/undefined 落 "undefined" 串。
use std::cmp::Ordering;
use oxide_runtime_api::{NativeResult, VmHost};
use oxide_types::value::JsValue;
use crate::builtins_debug;
use super::common::try_string;
use super::{as_units, map_well_formed_segments, this_units};
// ── Mn/Cf 判定表 ─────────────────────────────────────────────────────────
//
// Final Sigma 条件映射的"不可见"判定:Mn(非连接修饰符号)与 Cf(格式字符)
// 全集范围表(UCD 快照,367 段,起点升序)。表取全集而非语料钉点,防语料
// 扩充翻车;仅当未来 Unicode 版本新增 Mn/Cf 码点且语料随之扩充时需重生成。
const MN_CF_RANGES: &[(u32, u32)] = &[
(0xad, 0xad),
(0x300, 0x36f),
(0x483, 0x487),
(0x591, 0x5bd),
(0x5bf, 0x5bf),
(0x5c1, 0x5c2),
(0x5c4, 0x5c5),
(0x5c7, 0x5c7),
(0x600, 0x605),
(0x610, 0x61a),
(0x61c, 0x61c),
(0x64b, 0x65f),
(0x670, 0x670),
(0x6d6, 0x6dc),
(0x6dd, 0x6dd),
(0x6df, 0x6e4),
(0x6e7, 0x6e8),
(0x6ea, 0x6ed),
(0x70f, 0x70f),
(0x711, 0x711),
(0x730, 0x74a),
(0x7a6, 0x7b0),
(0x7eb, 0x7f3),
(0x7fd, 0x7fd),
(0x816, 0x819),
(0x81b, 0x823),
(0x825, 0x827),
(0x829, 0x82d),
(0x859, 0x85b),
(0x890, 0x891),
(0x898, 0x89f),
(0x8ca, 0x8e1),
(0x8e2, 0x8e2),
(0x8e3, 0x902),
(0x93a, 0x93a),
(0x93c, 0x93c),
(0x941, 0x948),
(0x94d, 0x94d),
(0x951, 0x957),
(0x962, 0x963),
(0x981, 0x981),
(0x9bc, 0x9bc),
(0x9c1, 0x9c4),
(0x9cd, 0x9cd),
(0x9e2, 0x9e3),
(0x9fe, 0x9fe),
(0xa01, 0xa02),
(0xa3c, 0xa3c),
(0xa41, 0xa42),
(0xa47, 0xa48),
(0xa4b, 0xa4d),
(0xa51, 0xa51),
(0xa70, 0xa71),
(0xa75, 0xa75),
(0xa81, 0xa82),
(0xabc, 0xabc),
(0xac1, 0xac5),
(0xac7, 0xac8),
(0xacd, 0xacd),
(0xae2, 0xae3),
(0xafa, 0xaff),
(0xb01, 0xb01),
(0xb3c, 0xb3c),
(0xb3f, 0xb3f),
(0xb41, 0xb44),
(0xb4d, 0xb4d),
(0xb55, 0xb56),
(0xb62, 0xb63),
(0xb82, 0xb82),
(0xbc0, 0xbc0),
(0xbcd, 0xbcd),
(0xc00, 0xc00),
(0xc04, 0xc04),
(0xc3c, 0xc3c),
(0xc3e, 0xc40),
(0xc46, 0xc48),
(0xc4a, 0xc4d),
(0xc55, 0xc56),
(0xc62, 0xc63),
(0xc81, 0xc81),
(0xcbc, 0xcbc),
(0xcbf, 0xcbf),
(0xcc6, 0xcc6),
(0xccc, 0xccd),
(0xce2, 0xce3),
(0xd00, 0xd01),
(0xd3b, 0xd3c),
(0xd41, 0xd44),
(0xd4d, 0xd4d),
(0xd62, 0xd63),
(0xd81, 0xd81),
(0xdca, 0xdca),
(0xdd2, 0xdd4),
(0xdd6, 0xdd6),
(0xe31, 0xe31),
(0xe34, 0xe3a),
(0xe47, 0xe4e),
(0xeb1, 0xeb1),
(0xeb4, 0xebc),
(0xec8, 0xece),
(0xf18, 0xf19),
(0xf35, 0xf35),
(0xf37, 0xf37),
(0xf39, 0xf39),
(0xf71, 0xf7e),
(0xf80, 0xf84),
(0xf86, 0xf87),
(0xf8d, 0xf97),
(0xf99, 0xfbc),
(0xfc6, 0xfc6),
(0x102d, 0x1030),
(0x1032, 0x1037),
(0x1039, 0x103a),
(0x103d, 0x103e),
(0x1058, 0x1059),
(0x105e, 0x1060),
(0x1071, 0x1074),
(0x1082, 0x1082),
(0x1085, 0x1086),
(0x108d, 0x108d),
(0x109d, 0x109d),
(0x135d, 0x135f),
(0x1712, 0x1714),
(0x1732, 0x1733),
(0x1752, 0x1753),
(0x1772, 0x1773),
(0x17b4, 0x17b5),
(0x17b7, 0x17bd),
(0x17c6, 0x17c6),
(0x17c9, 0x17d3),
(0x17dd, 0x17dd),
(0x180b, 0x180d),
(0x180e, 0x180e),
(0x180f, 0x180f),
(0x1885, 0x1886),
(0x18a9, 0x18a9),
(0x1920, 0x1922),
(0x1927, 0x1928),
(0x1932, 0x1932),
(0x1939, 0x193b),
(0x1a17, 0x1a18),
(0x1a1b, 0x1a1b),
(0x1a56, 0x1a56),
(0x1a58, 0x1a5e),
(0x1a60, 0x1a60),
(0x1a62, 0x1a62),
(0x1a65, 0x1a6c),
(0x1a73, 0x1a7c),
(0x1a7f, 0x1a7f),
(0x1ab0, 0x1abd),
(0x1abf, 0x1ace),
(0x1b00, 0x1b03),
(0x1b34, 0x1b34),
(0x1b36, 0x1b3a),
(0x1b3c, 0x1b3c),
(0x1b42, 0x1b42),
(0x1b6b, 0x1b73),
(0x1b80, 0x1b81),
(0x1ba2, 0x1ba5),
(0x1ba8, 0x1ba9),
(0x1bab, 0x1bad),
(0x1be6, 0x1be6),
(0x1be8, 0x1be9),
(0x1bed, 0x1bed),
(0x1bef, 0x1bf1),
(0x1c2c, 0x1c33),
(0x1c36, 0x1c37),
(0x1cd0, 0x1cd2),
(0x1cd4, 0x1ce0),
(0x1ce2, 0x1ce8),
(0x1ced, 0x1ced),
(0x1cf4, 0x1cf4),
(0x1cf8, 0x1cf9),
(0x1dc0, 0x1dff),
(0x200b, 0x200f),
(0x202a, 0x202e),
(0x2060, 0x2064),
(0x2066, 0x206f),
(0x20d0, 0x20dc),
(0x20e1, 0x20e1),
(0x20e5, 0x20f0),
(0x2cef, 0x2cf1),
(0x2d7f, 0x2d7f),
(0x2de0, 0x2dff),
(0x302a, 0x302d),
(0x3099, 0x309a),
(0xa66f, 0xa66f),
(0xa674, 0xa67d),
(0xa69e, 0xa69f),
(0xa6f0, 0xa6f1),
(0xa802, 0xa802),
(0xa806, 0xa806),
(0xa80b, 0xa80b),
(0xa825, 0xa826),
(0xa82c, 0xa82c),
(0xa8c4, 0xa8c5),
(0xa8e0, 0xa8f1),
(0xa8ff, 0xa8ff),
(0xa926, 0xa92d),
(0xa947, 0xa951),
(0xa980, 0xa982),
(0xa9b3, 0xa9b3),
(0xa9b6, 0xa9b9),
(0xa9bc, 0xa9bd),
(0xa9e5, 0xa9e5),
(0xaa29, 0xaa2e),
(0xaa31, 0xaa32),
(0xaa35, 0xaa36),
(0xaa43, 0xaa43),
(0xaa4c, 0xaa4c),
(0xaa7c, 0xaa7c),
(0xaab0, 0xaab0),
(0xaab2, 0xaab4),
(0xaab7, 0xaab8),
(0xaabe, 0xaabf),
(0xaac1, 0xaac1),
(0xaaec, 0xaaed),
(0xaaf6, 0xaaf6),
(0xabe5, 0xabe5),
(0xabe8, 0xabe8),
(0xabed, 0xabed),
(0xfb1e, 0xfb1e),
(0xfe00, 0xfe0f),
(0xfe20, 0xfe2f),
(0xfeff, 0xfeff),
(0xfff9, 0xfffb),
(0x101fd, 0x101fd),
(0x102e0, 0x102e0),
(0x10376, 0x1037a),
(0x10a01, 0x10a03),
(0x10a05, 0x10a06),
(0x10a0c, 0x10a0f),
(0x10a38, 0x10a3a),
(0x10a3f, 0x10a3f),
(0x10ae5, 0x10ae6),
(0x10d24, 0x10d27),
(0x10eab, 0x10eac),
(0x10efd, 0x10eff),
(0x10f46, 0x10f50),
(0x10f82, 0x10f85),
(0x11001, 0x11001),
(0x11038, 0x11046),
(0x11070, 0x11070),
(0x11073, 0x11074),
(0x1107f, 0x11081),
(0x110b3, 0x110b6),
(0x110b9, 0x110ba),
(0x110bd, 0x110bd),
(0x110c2, 0x110c2),
(0x110cd, 0x110cd),
(0x11100, 0x11102),
(0x11127, 0x1112b),
(0x1112d, 0x11134),
(0x11173, 0x11173),
(0x11180, 0x11181),
(0x111b6, 0x111be),
(0x111c9, 0x111cc),
(0x111cf, 0x111cf),
(0x1122f, 0x11231),
(0x11234, 0x11234),
(0x11236, 0x11237),
(0x1123e, 0x1123e),
(0x11241, 0x11241),
(0x112df, 0x112df),
(0x112e3, 0x112ea),
(0x11300, 0x11301),
(0x1133b, 0x1133c),
(0x11340, 0x11340),
(0x11366, 0x1136c),
(0x11370, 0x11374),
(0x11438, 0x1143f),
(0x11442, 0x11444),
(0x11446, 0x11446),
(0x1145e, 0x1145e),
(0x114b3, 0x114b8),
(0x114ba, 0x114ba),
(0x114bf, 0x114c0),
(0x114c2, 0x114c3),
(0x115b2, 0x115b5),
(0x115bc, 0x115bd),
(0x115bf, 0x115c0),
(0x115dc, 0x115dd),
(0x11633, 0x1163a),
(0x1163d, 0x1163d),
(0x1163f, 0x11640),
(0x116ab, 0x116ab),
(0x116ad, 0x116ad),
(0x116b0, 0x116b5),
(0x116b7, 0x116b7),
(0x1171d, 0x1171f),
(0x11722, 0x11725),
(0x11727, 0x1172b),
(0x1182f, 0x11837),
(0x11839, 0x1183a),
(0x1193b, 0x1193c),
(0x1193e, 0x1193e),
(0x11943, 0x11943),
(0x119d4, 0x119d7),
(0x119da, 0x119db),
(0x119e0, 0x119e0),
(0x11a01, 0x11a0a),
(0x11a33, 0x11a38),
(0x11a3b, 0x11a3e),
(0x11a47, 0x11a47),
(0x11a51, 0x11a56),
(0x11a59, 0x11a5b),
(0x11a8a, 0x11a96),
(0x11a98, 0x11a99),
(0x11c30, 0x11c36),
(0x11c38, 0x11c3d),
(0x11c3f, 0x11c3f),
(0x11c92, 0x11ca7),
(0x11caa, 0x11cb0),
(0x11cb2, 0x11cb3),
(0x11cb5, 0x11cb6),
(0x11d31, 0x11d36),
(0x11d3a, 0x11d3a),
(0x11d3c, 0x11d3d),
(0x11d3f, 0x11d45),
(0x11d47, 0x11d47),
(0x11d90, 0x11d91),
(0x11d95, 0x11d95),
(0x11d97, 0x11d97),
(0x11ef3, 0x11ef4),
(0x11f00, 0x11f01),
(0x11f36, 0x11f3a),
(0x11f40, 0x11f40),
(0x11f42, 0x11f42),
(0x13430, 0x1343f),
(0x13440, 0x13440),
(0x13447, 0x13455),
(0x16af0, 0x16af4),
(0x16b30, 0x16b36),
(0x16f4f, 0x16f4f),
(0x16f8f, 0x16f92),
(0x16fe4, 0x16fe4),
(0x1bc9d, 0x1bc9e),
(0x1bca0, 0x1bca3),
(0x1cf00, 0x1cf2d),
(0x1cf30, 0x1cf46),
(0x1d167, 0x1d169),
(0x1d173, 0x1d17a),
(0x1d17b, 0x1d182),
(0x1d185, 0x1d18b),
(0x1d1aa, 0x1d1ad),
(0x1d242, 0x1d244),
(0x1da00, 0x1da36),
(0x1da3b, 0x1da6c),
(0x1da75, 0x1da75),
(0x1da84, 0x1da84),
(0x1da9b, 0x1da9f),
(0x1daa1, 0x1daaf),
(0x1e000, 0x1e006),
(0x1e008, 0x1e018),
(0x1e01b, 0x1e021),
(0x1e023, 0x1e024),
(0x1e026, 0x1e02a),
(0x1e08f, 0x1e08f),
(0x1e130, 0x1e136),
(0x1e2ae, 0x1e2ae),
(0x1e2ec, 0x1e2ef),
(0x1e4ec, 0x1e4ef),
(0x1e8d0, 0x1e8d6),
(0x1e944, 0x1e94a),
(0xe0001, 0xe0001),
(0xe0020, 0xe007f),
(0xe0100, 0xe01ef),
];
/// 码点是否属 Mn/Cf(范围表二分判定,起点升序)。
fn is_mn_cf(cp: u32) -> bool {
let idx = MN_CF_RANGES.partition_point(|&(lo, _)| lo <= cp);
idx > 0 && cp <= MN_CF_RANGES[idx - 1].1
}
// ── Final Sigma 条件映射 ──────────────────────────────────────────────────
/// Final Sigma 条件小写映射:逐码点小写,其中 U+03A3(Σ)按条件规则取 σ/ς。
///
/// σ/ς 判定按原始单元序列(非变换后):后向(索引升方向)跳过 Mn/Cf 单元
/// 存在可见字符 → σ;后向无且前向(索引降方向)跳过 Mn/Cf 存在可见字符 → ς;
/// 前后均无可见字符 → σ。孤立 surrogate 原样透传(与 toLowerCase 同口径)。
fn final_sigma_lower(units: &[u16]) -> Vec<u16> {
let mut out = Vec::with_capacity(units.len());
let mut i = 0;
while i < units.len() {
let u = units[i];
if u == 0x03A3 {
// 双向跳过 Mn/Cf 找最近可见字符(含行尾前的任意非 Mn/Cf 字符)。
let mut j = i + 1;
while j < units.len() && is_mn_cf(units[j] as u32) {
j += 1;
}
let after_visible = j < units.len();
let mut j = i;
while j > 0 && is_mn_cf(units[j - 1] as u32) {
j -= 1;
}
let before_visible = j > 0;
out.push(if after_visible || !before_visible { 0x03C3 } else { 0x03C2 });
i += 1;
continue;
}
if (0xD800..=0xDBFF).contains(&u) && i + 1 < units.len() && (0xDC00..=0xDFFF).contains(&units[i + 1]) {
// 代理对整体解码为码点小写后回写 UTF-16。
let cp = (((u as u32) - 0xD800) << 10 | (units[i + 1] as u32 - 0xDC00)) + 0x10000;
let c = char::from_u32(cp).expect("合法代理对必解码为合法码点");
out.extend(c.to_lowercase().collect::<String>().encode_utf16());
i += 2;
continue;
}
if (0xD800..=0xDFFF).contains(&u) {
out.push(u);
} else if let Some(c) = char::from_u32(u as u32) {
out.extend(c.to_lowercase().collect::<String>().encode_utf16());
}
i += 1;
}
out
}
// ── 三方法 ───────────────────────────────────────────────────────────────
/// `String.prototype.toLocaleLowerCase`:locale 无关小写(与 toLowerCase 同表,
/// 增量 Final Sigma 条件映射)。
pub fn string_to_locale_lower_case<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
builtins_debug!("String.prototype.toLocaleLowerCase called with {} args", args.len());
let s = try_string!(this_units(vm, args)).into_owned();
let out = final_sigma_lower(&s);
NativeResult::Ok(vm.new_string_units_owned(out))
}
/// `String.prototype.toLocaleUpperCase`:locale 无关大写(与 toUpperCase 同表,
/// 良形段映射,孤立 surrogate 单元原样保留)。
pub fn string_to_locale_upper_case<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
builtins_debug!("String.prototype.toLocaleUpperCase called with {} args", args.len());
let s = try_string!(this_units(vm, args));
let out = map_well_formed_segments(&s, |seg| seg.to_uppercase());
NativeResult::Ok(vm.new_string_units_owned(out))
}
/// `String.prototype.localeCompare(compareString)`:基本档比较——两侧 NFC 归一后
/// 按 UTF-16 单元序(良形文本下与码元序等价)返回 -1/0/1。
///
/// # 边界与前提
/// - 第二参缺省或 undefined 落 "undefined" 串(规范基本档允许);其余非字符串经
/// 完整 ToString,Symbol 抛 TypeError;this 的 null/undefined/symbol 经
/// this_units 抛 TypeError。
///
/// # 注意事项
/// - 非 NFC 等价但 UCA 可分的串按单元序判(如 "ö" vs "o"),属基本档固有边界。
pub fn string_locale_compare<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
builtins_debug!("String.prototype.localeCompare called with {} args", args.len());
use unicode_normalization::UnicodeNormalization;
let a = try_string!(this_units(vm, args)).into_owned();
let b = if args.len() > 1 && !vm.reg(args[1]).is_undefined() {
try_string!(as_units(vm, vm.reg(args[1]))).into_owned()
} else {
"undefined".encode_utf16().collect()
};
// NFC 归一(良形段映射,孤立 surrogate 透传,与 normalize 同路径)。
let a = map_well_formed_segments(&a, |seg| seg.nfc().collect());
let b = map_well_formed_segments(&b, |seg| seg.nfc().collect());
NativeResult::Ok(JsValue::int(match a.cmp(&b) {
Ordering::Less => -1,
Ordering::Equal => 0,
Ordering::Greater => 1,
}))
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn mn_cf_table_corpus_points() {
// 语料钉死码点:Cf/Mn 在表、Lu 不属表。
assert!(is_mn_cf(0x00AD));
assert!(is_mn_cf(0x0345));
assert!(is_mn_cf(0x180E));
assert!(is_mn_cf(0x1D242));
assert!(!is_mn_cf(0x1D4A2));
assert!(!is_mn_cf(0x0041));
}
#[test]
fn final_sigma_conditional_mapping() {
// (输入单元, 期望输出):单枚/前后可见/行首行尾 Mn/Cf 环绕。
let cases: &[(&[u16], &[u16])] = &[
(&[0x03A3], &[0x03C3]),
(&[0x41, 0x03A3], &[0x61, 0x03C2]),
(&[0xD835, 0xDCA2, 0x03A3], &[0xD835, 0xDCA2, 0x03C2]),
(&[0x0345, 0x03A3], &[0x0345, 0x03C3]),
(&[0x41, 0x03A3, 0x2E], &[0x61, 0x03C3, 0x2E]),
(&[0x41, 0x03A3, 0x0345], &[0x61, 0x03C2, 0x0345]),
(&[0x41, 0x03A3, 0x180E], &[0x61, 0x03C2, 0x180E]),
(&[0x41, 0x03A3, 0x180E, 0x42], &[0x61, 0x03C3, 0x180E, 0x62]),
];
for (input, want) in cases {
assert_eq!(&final_sigma_lower(input), want);
}
}
}
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@@ -1,12 +1,15 @@
//! String 内置对象实现(constructor 与全部 String.prototype 方法)。
//!
//! 按职责分 `common` 文本通道、`basic` 基础方法族、`regex` 正则与匹配族,
//! 三族经本模块 glob 重导出,供绑定层(`oxide_builtins::string::`)与 `regexp` 模块(`crate::string::`)消费。
//! 按职责分 `common` 文本通道、`basic` 基础方法族、`regex` 正则与匹配族、
//! `locale` locale 三方法族,各族经本模块 glob 重导出,供绑定层
//! (`oxide_builtins::string::`)与 `regexp` 模块(`crate::string::`)消费。
mod basic;
mod common;
mod locale;
mod regex;
pub use basic::*;
pub(crate) use common::*;
pub use locale::*;
pub use regex::*;
+3
View File
@@ -247,6 +247,9 @@ impl BuiltinWorld {
("substring", methods.substring, 2),
("toUpperCase", methods.to_upper_case, 0),
("toLowerCase", methods.to_lower_case, 0),
("toLocaleUpperCase", methods.to_locale_upper_case, 0),
("toLocaleLowerCase", methods.to_locale_lower_case, 0),
("localeCompare", methods.locale_compare, 1),
("trim", methods.trim, 0),
("repeat", methods.repeat, 1),
("padStart", methods.pad_start, 1),
@@ -122,6 +122,9 @@ pub struct StringMethods {
pub is_well_formed: *const (),
pub to_well_formed: *const (),
pub from_raw: *const (),
pub to_locale_lower_case: *const (),
pub to_locale_upper_case: *const (),
pub locale_compare: *const (),
}
/// RegExp 原型方法的 native 函数指针集合。
@@ -19,6 +19,9 @@ pub fn bind_string(core: &Arc<KernelCore>, session: &KernelSession, global: &mut
substring: oxide_builtins::string::string_substring::<crate::vm::Vm> as *const (),
to_upper_case: oxide_builtins::string::string_to_upper_case::<crate::vm::Vm> as *const (),
to_lower_case: oxide_builtins::string::string_to_lower_case::<crate::vm::Vm> as *const (),
to_locale_upper_case: oxide_builtins::string::string_to_locale_upper_case::<crate::vm::Vm> as *const (),
to_locale_lower_case: oxide_builtins::string::string_to_locale_lower_case::<crate::vm::Vm> as *const (),
locale_compare: oxide_builtins::string::string_locale_compare::<crate::vm::Vm> as *const (),
trim: oxide_builtins::string::string_trim::<crate::vm::Vm> as *const (),
repeat: oxide_builtins::string::string_repeat::<crate::vm::Vm> as *const (),
pad_start: oxide_builtins::string::string_pad_start::<crate::vm::Vm> as *const (),
@@ -1404,3 +1404,111 @@ fn unicode_brace_escape_supplementary_and_lone_surrogate() {
.unwrap();
assert!(r.as_bool());
}
#[test]
fn string_to_locale_lower_case_final_sigma() {
// Final Sigma 条件映射 21 断言面(special_casing_conditional 15 + U180E 6):
// σ/ς 按原始序列双向跳过 Mn/Cf 找最近可见字符判定。
let mut vm = Vm::new();
let r = eval(
&mut vm,
"(\"\\u03A3\".toLocaleLowerCase() === \"\\u03C3\" && \
\"A\\u03A3\".toLocaleLowerCase() === \"a\\u03C2\" && \
\"\\uD835\\uDCA2\\u03A3\".toLocaleLowerCase() === \"\\uD835\\uDCA2\\u03C2\" && \
\"A.\\u03A3\".toLocaleLowerCase() === \"a.\\u03C2\" && \
\"A\\u00AD\\u03A3\".toLocaleLowerCase() === \"a\\u00AD\\u03C2\" && \
\"A\\uD834\\uDE42\\u03A3\".toLocaleLowerCase() === \"a\\uD834\\uDE42\\u03C2\" && \
\"\\u0345\\u03A3\".toLocaleLowerCase() === \"\\u0345\\u03C3\" && \
\"\\u0391\\u0345\\u03A3\".toLocaleLowerCase() === \"\\u03B1\\u0345\\u03C2\" && \
\"A\\u03A3B\".toLocaleLowerCase() === \"a\\u03C3b\" && \
\"A\\u03A3\\uD835\\uDCA2\".toLocaleLowerCase() === \"a\\u03C3\\uD835\\uDCA2\" && \
\"A\\u03A3.b\".toLocaleLowerCase() === \"a\\u03C3.b\" && \
\"A\\u03A3\\u00ADB\".toLocaleLowerCase() === \"a\\u03C3\\u00ADb\" && \
\"A\\u03A3\\uD834\\uDE42B\".toLocaleLowerCase() === \"a\\u03C3\\uD834\\uDE42b\" && \
\"A\\u03A3\\u0345\".toLocaleLowerCase() === \"a\\u03C2\\u0345\" && \
\"A\\u03A3\\u0345\\u0391\".toLocaleLowerCase() === \"a\\u03C3\\u0345\\u03B1\" && \
\"A\\u180E\\u03A3\".toLocaleLowerCase() === \"a\\u180E\\u03C2\" && \
\"A\\u180E\\u03A3B\".toLocaleLowerCase() === \"a\\u180E\\u03C3b\" && \
\"A\\u03A3\\u180E\".toLocaleLowerCase() === \"a\\u03C2\\u180E\" && \
\"A\\u03A3\\u180EB\".toLocaleLowerCase() === \"a\\u03C3\\u180Eb\" && \
\"A\\u180E\\u03A3\\u180E\".toLocaleLowerCase() === \"a\\u180E\\u03C2\\u180E\" && \
\"A\\u180E\\u03A3\\u180EB\".toLocaleLowerCase() === \"a\\u180E\\u03C3\\u180Eb\")",
)
.unwrap();
assert!(r.as_bool());
}
#[test]
fn string_to_locale_case_basic_mapping() {
// 与 toLowerCase/toUpperCase 同表:ß 小写不变、大写 SS;Σ 大写恒 Σ;
// 补充平面代理对整体映射。
let mut vm = Vm::new();
let r = eval(
&mut vm,
"\"ß\".toLocaleLowerCase() === \"ß\" && \
\"ß\".toLocaleUpperCase() === \"SS\" && \
\"\\u03A3\".toLocaleUpperCase() === \"\\u03A3\" && \
\"\\u03C3\".toLocaleLowerCase() === \"\\u03C3\" && \
\"\\u03C3\".toLocaleUpperCase() === \"\\u03A3\" && \
\"aB\".toLocaleUpperCase() === \"AB\" && \
\"aB\".toLocaleLowerCase() === \"ab\" && \
\"\\uD83D\\uDE00\".toLocaleLowerCase() === \"\\uD83D\\uDE00\"",
)
.unwrap();
assert!(r.as_bool());
}
#[test]
fn string_locale_compare_canonical_and_order() {
// NFC 规范等价对全 0(含组合符重排与 Hangul 合成对);缺省/undefined/
// "undefined" 三式等价;码元序方向与反对称。
let mut vm = Vm::new();
let r = eval(
&mut vm,
"(\"o\\u0308\".localeCompare(\"ö\") === 0 && \
\"Ç\".localeCompare(\"C\\u0327\") === 0 && \
\"가\".localeCompare(\"\\u1100\\u1161\") === 0 && \
\"ô\".localeCompare(\"o\\u0302\") === 0 && \
\"ṩ\".localeCompare(\"s\\u0323\\u0307\") === 0 && \
\"a\".localeCompare() === \"a\".localeCompare(undefined) && \
\"a\".localeCompare() === \"a\".localeCompare(\"undefined\") && \
\"a\".localeCompare(\"b\") === -1 && \"b\".localeCompare(\"a\") === 1 && \
\"h\".localeCompare(\"H\") === -\"H\".localeCompare(\"h\") && \
\"a\".localeCompare(1) === \"a\".localeCompare(\"1\"))",
)
.unwrap();
assert!(r.as_bool());
}
#[test]
fn string_locale_methods_type_errors() {
// null/undefined/symbol 接收者抛 TypeError;localeCompare 第二参
// Symbol 抛 TypeError。
let mut vm = Vm::new();
let r = eval(
&mut vm,
"((function(){ try { (null).toLocaleLowerCase(); return false; } catch (e) { return e.name === \"TypeError\"; } })() && \
(function(){ try { (undefined).toLocaleUpperCase(); return false; } catch (e) { return e.name === \"TypeError\"; } })() && \
(function(){ try { (null).localeCompare(\"a\"); return false; } catch (e) { return e.name === \"TypeError\"; } })() && \
(function(){ try { \"a\".localeCompare(Symbol(\"s\")); return false; } catch (e) { return e.name === \"TypeError\"; } })())",
)
.unwrap();
assert!(r.as_bool());
}
#[test]
fn string_locale_methods_length_and_name() {
// 绑定描述符面:length 0/0/1、name 与方法名一致。
let mut vm = Vm::new();
let r = eval(
&mut vm,
"String.prototype.toLocaleLowerCase.length === 0 && \
String.prototype.toLocaleUpperCase.length === 0 && \
String.prototype.localeCompare.length === 1 && \
String.prototype.toLocaleLowerCase.name === \"toLocaleLowerCase\" && \
String.prototype.toLocaleUpperCase.name === \"toLocaleUpperCase\" && \
String.prototype.localeCompare.name === \"localeCompare\"",
)
.unwrap();
assert!(r.as_bool());
}