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AK: Add a Utf16View::is_code_unit_less_than helper

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This seems like the natural place to put this since it is specific
to UTF-16.
This commit is contained in:
Shannon Booth 2025-05-15 17:56:33 +12:00 • committed by Tim Flynn
parent 233022c473
commit 5cf87dcfdc
Notes: github-actions[bot] 2025-05-17 12:02:09 +00:00
2 changed files with 17 additions and 0 deletions
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16
AK/Utf16View.cpp
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@ -300,6 +300,22 @@ bool Utf16View::starts_with(Utf16View const& needle) const
return true;
}
// https://infra.spec.whatwg.org/#code-unit-less-than
bool Utf16View::is_code_unit_less_than(Utf16View const& other) const
{
auto a = m_code_units;
auto b = other.m_code_units;
auto common_length = min(a.size(), b.size());
for (size_t position = 0; position < common_length; ++position) {
if (a[position] != b[position])
return a[position] < b[position];
}
return a.size() < b.size();
}
bool Utf16View::validate() const
{
return simdutf::validate_utf16(char_data(), length_in_code_units());

1
AK/Utf16View.h
View file

@ -135,6 +135,7 @@ public:
Utf16View unicode_substring_view(size_t code_point_offset) const { return unicode_substring_view(code_point_offset, length_in_code_points() - code_point_offset); }
bool starts_with(Utf16View const&) const;
bool is_code_unit_less_than(Utf16View const& other) const;
bool validate() const;
bool validate(size_t& valid_code_units) const;