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noexcept all of the span iterator stuff

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Jordan Maples [MSFT] 2020-01-08 12:34:11 -08:00
parent b33bd4aebe
commit 3bf4106a44
1 changed files with 11 additions and 11 deletions
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22
include/gsl/span
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@ -164,67 +164,67 @@ namespace details
return span_->data() + index_; return span_->data() + index_;
} }
constexpr span_iterator& operator++() constexpr span_iterator& operator++() noexcept
{ {
Expects(0 <= index_ && index_ != span_->size()); Expects(0 <= index_ && index_ != span_->size());
++index_; ++index_;
return *this; return *this;
} }
constexpr span_iterator operator++(int) constexpr span_iterator operator++(int) noexcept
{ {
auto ret = *this; auto ret = *this;
++(*this); ++(*this);
return ret; return ret;
} }
constexpr span_iterator& operator--() constexpr span_iterator& operator--() noexcept
{ {
Expects(index_ != 0 && index_ <= span_->size()); Expects(index_ != 0 && index_ <= span_->size());
--index_; --index_;
return *this; return *this;
} }
constexpr span_iterator operator--(int) constexpr span_iterator operator--(int) noexcept
{ {
auto ret = *this; auto ret = *this;
--(*this); --(*this);
return ret; return ret;
} }
constexpr span_iterator operator+(difference_type n) const constexpr span_iterator operator+(difference_type n) const noexcept
{ {
auto ret = *this; auto ret = *this;
return ret += n; return ret += n;
} }
friend constexpr span_iterator operator+(difference_type n, span_iterator const& rhs) friend constexpr span_iterator operator+(difference_type n, span_iterator const& rhs) noexcept
{ {
return rhs + n; return rhs + n;
} }
constexpr span_iterator& operator+=(difference_type n) constexpr span_iterator& operator+=(difference_type n) noexcept
{ {
Expects((index_ + n) >= 0 && (index_ + n) <= span_->size()); Expects((index_ + n) >= 0 && (index_ + n) <= span_->size());
index_ += n; index_ += n;
return *this; return *this;
} }
constexpr span_iterator operator-(difference_type n) const constexpr span_iterator operator-(difference_type n) const noexcept
{ {
auto ret = *this; auto ret = *this;
return ret -= n; return ret -= n;
} }
constexpr span_iterator& operator-=(difference_type n) { return *this += -n; } constexpr span_iterator& operator-=(difference_type n) noexcept { return *this += -n; }
constexpr difference_type operator-(span_iterator rhs) const constexpr difference_type operator-(span_iterator rhs) const noexcept
{ {
Expects(span_ == rhs.span_); Expects(span_ == rhs.span_);
return index_ - rhs.index_; return index_ - rhs.index_;
} }
constexpr reference operator[](difference_type n) const { return *(*this + n); } constexpr reference operator[](difference_type n) const noexcept { return *(*this + n); }
constexpr friend bool operator==(span_iterator lhs, span_iterator rhs) noexcept constexpr friend bool operator==(span_iterator lhs, span_iterator rhs) noexcept
{ {