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xo-object: 3way String compare for clang 16.

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Roland Conybeare 2025-12-08 23:42:25 -05:00
commit 872469f11e
1 changed files with 18 additions and 0 deletions
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18
xo-object/include/xo/object/String.hpp
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@ -81,8 +81,26 @@ namespace xo {
size_t len1 = std::strlen(chars_);
size_t len2 = std::strlen(other.chars_);
# if defined(__cpp_lib_three_way_comparison) && __cpp_lib_three_way_comparison >= 201907L
return std::lexicographical_compare_three_way(chars_, chars_ + len1,
other.chars_, other.chars_ + len2);
# else
/* lexicographical_compare_three_way n/avail in clang 16.0.6 */
{
// Compare common prefix
size_t min_len = std::min(len1, len2);
int cmp = std::memcmp(chars_, other.chars_, min_len);
if (cmp < 0) return std::strong_ordering::less;
if (cmp > 0) return std::strong_ordering::greater;
// Common prefix is equal, compare lengths
if (len1 < len2) return std::strong_ordering::less;
if (len1 > len2) return std::strong_ordering::greater;
return std::strong_ordering::equal;
}
# endif
}
bool operator==(const String & other) const {