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AK+LibJS: Extract some UTF-16 helpers for use in an outside class

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An upcoming Utf16String will need access to these helpers. Let's make
them publicly available.
This commit is contained in:
Timothy Flynn 2025-06-12 17:39:05 -04:00 • committed by Tim Flynn
commit 66006d3812
Notes: github-actions[bot] 2025-07-03 13:54:12 +00:00
10 changed files with 121 additions and 86 deletions
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AK/StringBuilder.cpp
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@ -283,7 +283,7 @@ ErrorOr<void> StringBuilder::try_append(Utf16View const& utf16_view)
uninitialized_data_pointer[bytes_just_written++] = (((code_unit >> 12) & 0x0f) | 0xe0);
uninitialized_data_pointer[bytes_just_written++] = (((code_unit >> 6) & 0x3f) | 0x80);
uninitialized_data_pointer[bytes_just_written++] = (((code_unit >> 0) & 0x3f) | 0x80);
} while (first_invalid_code_unit < remaining_view.length_in_code_units() && Utf16View::is_low_surrogate(remaining_view.data()[first_invalid_code_unit]));
} while (first_invalid_code_unit < remaining_view.length_in_code_units() && UnicodeUtils::is_utf16_low_surrogate(remaining_view.data()[first_invalid_code_unit]));
// Code unit might no longer be invalid, retry on the remaining data.
m_buffer.set_size(m_buffer.size() + bytes_just_written);