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CTL: utility.h, use ctl::swap in string (#1227)

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* Add ctl utility.h

Implements forward, move, swap, and declval. This commit also adds a def
for nullptr_t to cxx.inc. We need it now because the CTL headers stopped
including anything from libc++, so we no longer get their basic types.

* Use ctl::swap in string

The STL spec says that swap is located in the string_view header anyawy.
Performance-wise this is a noop, but it’s slightly cleaner.
This commit is contained in:
Steven Dee (Jōshin) 2024-06-18 22:00:59 -07:00 • committed by GitHub
parent a795017416
commit 9a5a13854d
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13 changed files with 117 additions and 46 deletions
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5
ctl/string.h
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@ -87,10 +87,7 @@ class string
void swap(string& s) noexcept
{
char tmp[__::string_size];
__builtin_memcpy(tmp, blob, __::string_size);
__builtin_memcpy(blob, s.blob, __::string_size);
__builtin_memcpy(s.blob, tmp, __::string_size);
ctl::swap(blob, s.blob);
}
string(string&& s) noexcept