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Do not copy vector

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This commit is contained in:
Andrei Kortunov 2023-09-04 16:46:23 +04:00
parent 5faf56950b
commit a849a053be
1 changed files with 12 additions and 11 deletions
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23
components/lua/utf8.cpp
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@ -110,18 +110,19 @@ namespace LuaUtf8
};
utf8["codes"] = [](std::string_view s) {
std::vector<int64_t> pos_byte{ 1 };
return sol::as_function([s, pos_byte]() mutable -> sol::optional<std::pair<int64_t, int64_t>> {
if (pos_byte.back() <= static_cast<int64_t>(s.size()))
{
const auto pair = decodeNextUTF8Character(s, pos_byte);
if (pair.second == -1)
throw std::runtime_error("Invalid UTF-8 code at position " + std::to_string(pos_byte.size()));
return sol::as_function(
[s, pos_byte = std::vector<int64_t>{ 1 }]() mutable -> sol::optional<std::pair<int64_t, int64_t>> {
if (pos_byte.back() <= static_cast<int64_t>(s.size()))
{
const auto pair = decodeNextUTF8Character(s, pos_byte);
if (pair.second == -1)
throw std::runtime_error(
"Invalid UTF-8 code at position " + std::to_string(pos_byte.size()));
return pair;
}
return sol::nullopt;
});
return pair;
}
return sol::nullopt;
});
};
utf8["len"] = [](std::string_view s,