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@ -38,7 +38,8 @@ class IndexInterval
@@ -38,7 +38,8 @@ class IndexInterval
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public: |
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using IndexType = Index; |
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IndexInterval(IndexType first, IndexType last) // add constexpr when using C++17
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// TODO: add constexpr when using C++17
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IndexInterval(const IndexType first, const IndexType last) |
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: m_first {first} |
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, m_last {last} |
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{ |
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@ -61,7 +62,7 @@ private:
@@ -61,7 +62,7 @@ private:
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}; |
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template <typename T> |
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constexpr IndexInterval<T> makeInterval(T first, T last) |
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constexpr IndexInterval<T> makeInterval(const T first, const T last) |
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{ |
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return {first, last}; |
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} |
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@ -74,13 +75,55 @@ public:
@@ -74,13 +75,55 @@ public:
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using IndexType = Index; |
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using IndexDiffType = IndexDiff; |
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class Iterator |
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{ |
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public: |
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explicit constexpr Iterator(const IndexType index) |
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: m_index {index} |
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{ |
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} |
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constexpr Iterator(const Iterator &) = default; |
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constexpr IndexType operator*() const |
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{ |
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return m_index; |
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} |
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constexpr Iterator &operator++() |
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{ |
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++m_index; |
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return *this; |
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} |
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constexpr Iterator operator++(int) |
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{ |
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const Iterator iter {*this}; |
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++(*this); |
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return iter; |
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} |
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constexpr bool operator==(const Iterator &other) const |
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{ |
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return (*(*this) == *other); |
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} |
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constexpr bool operator!=(const Iterator &other) const |
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{ |
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return !(*this == other); |
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} |
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private: |
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IndexType m_index; |
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}; |
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constexpr IndexRange() |
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: m_first {0} |
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, m_size {0} |
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{ |
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} |
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constexpr IndexRange(IndexType first, IndexDiffType size) |
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constexpr IndexRange(const IndexType first, const IndexDiffType size) |
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: m_first {first} |
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, m_size {size} |
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{ |
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@ -92,14 +135,14 @@ public:
@@ -92,14 +135,14 @@ public:
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{ |
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} |
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constexpr IndexType begin() const |
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constexpr Iterator begin() const |
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{ |
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return m_first; |
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return Iterator {m_first}; |
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} |
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constexpr IndexType end() const |
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constexpr Iterator end() const |
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{ |
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return (m_first + m_size); |
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return Iterator {m_first + m_size}; |
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} |
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constexpr IndexDiffType size() const |
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