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ircd: Additional _constexpr_equal utils w/ size args.

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This commit is contained in:
Jason Volk 2022-06-25 19:37:38 -07:00
parent aff1b3436e
commit 4062d273e9
1 changed files with 30 additions and 0 deletions
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30
include/ircd/string_view.h
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@ -19,6 +19,9 @@ namespace ircd
template<size_t N> constexpr size_t _constexpr_strlen(const char (&)[N]) noexcept;
constexpr bool _constexpr_equal(const char *a, const char *b) noexcept;
constexpr bool _constexpr_equal(const char *a, const char *b, size_t) noexcept;
constexpr bool _constexpr_equal(const char *a, const size_t, const char *b, const size_t) noexcept;
constexpr bool _constexpr_equal(const string_view &, const string_view &) noexcept;
template<size_t N0, size_t N1> constexpr bool _constexpr_equal(const char (&)[N0], const char (&)[N1]) noexcept;
constexpr const char *data(const string_view &) noexcept;
@ -326,6 +329,33 @@ noexcept
return true;
}
constexpr bool
ircd::_constexpr_equal(const string_view &a,
const string_view &b)
noexcept
{
return _constexpr_equal(data(a), size(a), data(b), size(b));
}
constexpr bool
ircd::_constexpr_equal(const char *const a,
const size_t a_len,
const char *const b,
const size_t b_len)
noexcept
{
return a_len == b_len && _constexpr_equal(a, b, a_len);
}
constexpr bool
ircd::_constexpr_equal(const char *const a,
const char *const b,
size_t len)
noexcept
{
return !len || (*a == *b && (*a == '\0' || _constexpr_equal(a + 1, b + 1, len - 1)));
}
constexpr bool
ircd::_constexpr_equal(const char *const a,
const char *const b)