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LibRegex: Support non-ASCII case-insensitive character comparisons

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Specifically, when the Unicode flag is set, use Unicode-aware case
folding to case-insensitively compare code points.
This commit is contained in:
Timothy Flynn 2023-11-08 10:30:55 -05:00 • committed by Tim Flynn
parent 3fbf33bd37
commit e122039c99
2 changed files with 23 additions and 4 deletions
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12
Tests/LibRegex/Regex.cpp
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@ -757,6 +757,18 @@ TEST_CASE(ECMA262_unicode_match)
{ "(?<\\ud835\\udcd1\\ud835\\udcfb\\ud835\\udcf8\\ud835\\udd00\\ud835\\udcf7>brown)"sv, "brown"sv, true, ECMAScriptFlags::Unicode },
{ "^\\s+$"sv, space_and_line_terminators },
{ "^\\s+$"sv, space_and_line_terminators, true, ECMAScriptFlags::Unicode },
{ "[\\u0390]"sv, "\u1fd3"sv, false, ECMAScriptFlags::Unicode },
{ "[\\u1fd3]"sv, "\u0390"sv, false, ECMAScriptFlags::Unicode },
{ "[\\u0390]"sv, "\u1fd3"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::Insensitive) },
{ "[\\u1fd3]"sv, "\u0390"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::Insensitive) },
{ "[\\u03b0]"sv, "\u1fe3"sv, false, ECMAScriptFlags::Unicode },
{ "[\\u1fe3]"sv, "\u03b0"sv, false, ECMAScriptFlags::Unicode },
{ "[\\u03b0]"sv, "\u1fe3"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::Insensitive) },
{ "[\\u1fe3]"sv, "\u03b0"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::Insensitive) },
{ "[\\ufb05]"sv, "\ufb06"sv, false, ECMAScriptFlags::Unicode },
{ "[\\ufb06]"sv, "\ufb05"sv, false, ECMAScriptFlags::Unicode },
{ "[\\ufb05]"sv, "\ufb06"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::Insensitive) },
{ "[\\ufb06]"sv, "\ufb05"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::Insensitive) },
};
for (auto& test : tests) {