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https://github.com/ToruNiina/toml11.git
synced 2024-11-22 20:30:11 +00:00
fix: check and convert value manually
I totally have no idea when std::count returns a negative value, but the result type of `std::count` is a differnce_type. So when it is added with size_t value, implicit sign conversion happens. This changes check this kind of (almost trivial but required) checking.
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@ -69,8 +69,9 @@ struct region_base
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template<typename Container>
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struct location final : public region_base
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{
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using const_iterator = typename Container::const_iterator;
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using source_ptr = std::shared_ptr<const Container>;
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using const_iterator = typename Container::const_iterator;
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using difference_type = typename const_iterator::difference_type;
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using source_ptr = std::shared_ptr<const Container>;
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static_assert(std::is_same<char, typename Container::value_type>::value,"");
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static_assert(std::is_same<std::random_access_iterator_tag,
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@ -103,15 +104,17 @@ struct location final : public region_base
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// to the location changes the point to look. So an overload of `iter()`
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// which returns mutable reference is removed and `advance()`, `retrace()`
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// and `reset()` is added.
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void advance(std::size_t n = 1) noexcept
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void advance(difference_type n = 1) noexcept
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{
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this->line_number_ += std::count(this->iter_, this->iter_ + n, '\n');
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this->line_number_ += static_cast<std::size_t>(
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std::count(this->iter_, std::next(this->iter_, n), '\n'));
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this->iter_ += n;
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return;
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}
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void retrace(std::size_t n = 1) noexcept
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void retrace(difference_type n = 1) noexcept
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{
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this->line_number_ -= std::count(this->iter_ - n, this->iter_, '\n');
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this->line_number_ -= static_cast<std::size_t>(
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std::count(std::prev(this->iter_, n), this->iter_, '\n'));
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this->iter_ -= n;
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return;
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}
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@ -121,11 +124,13 @@ struct location final : public region_base
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// iterators and returns a negative value if `first > last`.
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if(0 <= std::distance(rollback, this->iter_)) // rollback < iter
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{
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this->line_number_ -= std::count(rollback, this->iter_, '\n');
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this->line_number_ -= static_cast<std::size_t>(
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std::count(rollback, this->iter_, '\n'));
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}
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else // iter < rollback [[unlikely]]
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{
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this->line_number_ += std::count(this->iter_, rollback, '\n');
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this->line_number_ += static_cast<std::size_t>(
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std::count(this->iter_, rollback, '\n'));
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}
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this->iter_ = rollback;
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return;
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@ -162,11 +167,15 @@ struct location final : public region_base
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}
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std::size_t before() const noexcept override
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{
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return std::distance(this->line_begin(), this->iter());
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const auto sz = std::distance(this->line_begin(), this->iter());
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assert(sz >= 0);
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return static_cast<std::size_t>(sz);
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}
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std::size_t after() const noexcept override
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{
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return std::distance(this->iter(), this->line_end());
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const auto sz = std::distance(this->iter(), this->line_end());
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assert(sz >= 0);
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return static_cast<std::size_t>(sz);
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}
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source_ptr const& source() const& noexcept {return source_;}
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@ -250,15 +259,21 @@ struct region final : public region_base
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std::size_t size() const noexcept override
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{
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return std::distance(first_, last_);
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const auto sz = std::distance(first_, last_);
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assert(sz >= 0);
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return static_cast<std::size_t>(sz);
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}
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std::size_t before() const noexcept override
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{
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return std::distance(this->line_begin(), this->first());
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const auto sz = std::distance(this->line_begin(), this->first());
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assert(sz >= 0);
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return static_cast<std::size_t>(sz);
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}
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std::size_t after() const noexcept override
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{
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return std::distance(this->last(), this->line_end());
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const auto sz = std::distance(this->last(), this->line_end());
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assert(sz >= 0);
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return static_cast<std::size_t>(sz);
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}
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bool contain_newline() const noexcept
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