| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // ====================================================================== | ||
| 2 | // \title MapConstIterator | ||
| 3 | // \author bocchino | ||
| 4 | // \brief An abstract class template representing a const iterator for a map | ||
| 5 | // ====================================================================== | ||
| 6 | |||
| 7 | #ifndef Fw_MapConstIterator_HPP | ||
| 8 | #define Fw_MapConstIterator_HPP | ||
| 9 | |||
| 10 | #include <new> | ||
| 11 | |||
| 12 | #include "Fw/DataStructures/ArraySetOrMapImpl.hpp" | ||
| 13 | #include "Fw/DataStructures/MapEntryBase.hpp" | ||
| 14 | #include "Fw/DataStructures/RedBlackTreeSetOrMapImpl.hpp" | ||
| 15 | #include "Fw/FPrimeBasicTypes.hpp" | ||
| 16 | |||
| 17 | namespace Fw { | ||
| 18 | |||
| 19 | template <typename K, typename V> | ||
| 20 | class MapConstIterator { | ||
| 21 | public: | ||
| 22 | // ---------------------------------------------------------------------- | ||
| 23 | // Public types | ||
| 24 | // ---------------------------------------------------------------------- | ||
| 25 | |||
| 26 | //! The type of an array iterator | ||
| 27 | using ArrayIterator = typename ArraySetOrMapImpl<K, V>::ConstIterator; | ||
| 28 | //! The type of a map entry base | ||
| 29 | using EntryBase = MapEntryBase<K, V>; | ||
| 30 | //! The type of a red-black tree iterator | ||
| 31 | using RedBlackTreeIterator = typename RedBlackTreeSetOrMapImpl<K, V>::ConstIterator; | ||
| 32 | |||
| 33 | private: | ||
| 34 | // ---------------------------------------------------------------------- | ||
| 35 | // Private types | ||
| 36 | // ---------------------------------------------------------------------- | ||
| 37 | |||
| 38 | //! The type of an implementation kind | ||
| 39 | using ImplKind = typename SetOrMapImplConstIterator<K, V>::ImplKind; | ||
| 40 | |||
| 41 | //! The type of an implementation | ||
| 42 | union Impl { | ||
| 43 | //! Default constructor | ||
| 44 | 4325 | Impl() {} | |
| 45 | //! Array constructor | ||
| 46 | 705 | Impl(const ArrayIterator& it) : array(it) {} | |
| 47 | //! Red-black tree constructor | ||
| 48 | 729 | Impl(const RedBlackTreeIterator& it) : redBlackTree(it) {} | |
| 49 | //! An array iterator | ||
| 50 | ArrayIterator array; | ||
| 51 | //! A red-black tree iterator | ||
| 52 | RedBlackTreeIterator redBlackTree; | ||
| 53 | // ! Destructor | ||
| 54 | 5759 | ~Impl() {} | |
| 55 | }; | ||
| 56 | |||
| 57 | public: | ||
| 58 | // ---------------------------------------------------------------------- | ||
| 59 | // Constructors and destructors | ||
| 60 | // ---------------------------------------------------------------------- | ||
| 61 | |||
| 62 | //! Constructor providing an array implementation | ||
| 63 | 705 | MapConstIterator(const ArrayIterator& it) : m_impl(it), m_implIterator(&m_impl.array) {} | |
| 64 | |||
| 65 | //! Constructor providing a red-black tree implementation | ||
| 66 | 729 | MapConstIterator(const RedBlackTreeIterator& it) : m_impl(it), m_implIterator(&m_impl.redBlackTree) {} | |
| 67 | |||
| 68 | //! Copy constructor | ||
| 69 | 4325 | MapConstIterator(const MapConstIterator& it) : m_impl(), m_implIterator() { | |
| 70 |
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4325 | const auto implKind = it.getImplIterator().implKind(); |
| 71 |
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4325 | switch (implKind) { |
| 72 | 2171 | case ImplKind::ARRAY: | |
| 73 | 2171 | this->m_implIterator = new (&this->m_impl.array) ArrayIterator(it.m_impl.array); | |
| 74 | 2171 | break; | |
| 75 | 2154 | case ImplKind::RED_BLACK_TREE: | |
| 76 | 2154 | this->m_implIterator = new (&this->m_impl.redBlackTree) RedBlackTreeIterator(it.m_impl.redBlackTree); | |
| 77 | 2154 | break; | |
| 78 | ✗ | default: | |
| 79 | ✗ | FW_ASSERT(false, static_cast<FwAssertArgType>(implKind)); | |
| 80 | ✗ | break; | |
| 81 | } | ||
| 82 | 4325 | } | |
| 83 | |||
| 84 | //! Destructor | ||
| 85 | 5759 | ~MapConstIterator() {} | |
| 86 | |||
| 87 | public: | ||
| 88 | // ---------------------------------------------------------------------- | ||
| 89 | // Public member functions | ||
| 90 | // ---------------------------------------------------------------------- | ||
| 91 | |||
| 92 | //! Copy assignment operator | ||
| 93 | MapConstIterator& operator=(const MapConstIterator&) = default; | ||
| 94 | |||
| 95 | //! Equality comparison operator | ||
| 96 | 885 | bool operator==(const MapConstIterator& it) const { | |
| 97 | 885 | bool result = false; | |
| 98 | 885 | const auto implKind1 = this->getImplIterator().implKind(); | |
| 99 | 885 | const auto implKind2 = it.getImplIterator().implKind(); | |
| 100 |
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885 | if (implKind1 == implKind2) { |
| 101 |
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885 | switch (implKind1) { |
| 102 | 409 | case ImplKind::ARRAY: | |
| 103 | 409 | result = this->m_impl.array.compareEqual(it.m_impl.array); | |
| 104 | 409 | break; | |
| 105 | 476 | case ImplKind::RED_BLACK_TREE: | |
| 106 | 476 | result = this->m_impl.redBlackTree.compareEqual(it.m_impl.redBlackTree); | |
| 107 | 476 | break; | |
| 108 | ✗ | default: | |
| 109 | ✗ | FW_ASSERT(false, static_cast<FwAssertArgType>(implKind1)); | |
| 110 | ✗ | break; | |
| 111 | } | ||
| 112 | } | ||
| 113 | 885 | return result; | |
| 114 | } | ||
| 115 | |||
| 116 | //! Inequality comparison operator | ||
| 117 | 885 | bool operator!=(const MapConstIterator& it) const { return !(*this == it); }; | |
| 118 | |||
| 119 | //! Prefix increment | ||
| 120 | 4847 | MapConstIterator& operator++() { | |
| 121 | 4847 | this->getImplIterator().increment(); | |
| 122 | 4847 | return *this; | |
| 123 | } | ||
| 124 | |||
| 125 | //! Postfix increment | ||
| 126 | 4325 | MapConstIterator operator++(int) { | |
| 127 | 4325 | MapConstIterator tmp = *this; | |
| 128 |
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4325 | ++(*this); |
| 129 | 4325 | return tmp; | |
| 130 | ✗ | } | |
| 131 | |||
| 132 | //! Check whether the iterator is in range | ||
| 133 | 868 | bool isInRange() const { return this->getImplIterator().isInRange(); } | |
| 134 | |||
| 135 | //! Dereference | ||
| 136 | 884 | const EntryBase& operator*() const { return this->getImplIterator().getEntry(); } | |
| 137 | |||
| 138 | //! Pointer | ||
| 139 | 8633 | const EntryBase* operator->() const { return &this->getImplIterator().getEntry(); } | |
| 140 | |||
| 141 | private: | ||
| 142 | // ---------------------------------------------------------------------- | ||
| 143 | // Private helper functions | ||
| 144 | // ---------------------------------------------------------------------- | ||
| 145 | |||
| 146 | //! Assert and get the impl iterator | ||
| 147 | 4847 | SetOrMapImplConstIterator<K, V>& getImplIterator() { | |
| 148 | 4847 | FW_ASSERT(this->m_implIterator != nullptr); | |
| 149 | 4847 | return *this->m_implIterator; | |
| 150 | } | ||
| 151 | |||
| 152 | //! Assert and get the impl iterator (const) | ||
| 153 | 16480 | const SetOrMapImplConstIterator<K, V>& getImplIterator() const { | |
| 154 | 16480 | FW_ASSERT(this->m_implIterator != nullptr); | |
| 155 | 16480 | return *this->m_implIterator; | |
| 156 | } | ||
| 157 | |||
| 158 | private: | ||
| 159 | // ---------------------------------------------------------------------- | ||
| 160 | // Private member variables | ||
| 161 | // ---------------------------------------------------------------------- | ||
| 162 | |||
| 163 | //! The implementation | ||
| 164 | Impl m_impl; | ||
| 165 | |||
| 166 | //! The impl iterator | ||
| 167 | SetOrMapImplConstIterator<K, V>* m_implIterator = nullptr; | ||
| 168 | }; | ||
| 169 | |||
| 170 | } // namespace Fw | ||
| 171 | |||
| 172 | #endif | ||
| 173 |