| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #pragma once | ||
| 2 | |||
| 3 | #include <memory> | ||
| 4 | |||
| 5 | #include "../Common.h" | ||
| 6 | #include "Concepts.h" | ||
| 7 | |||
| 8 | namespace CXXIter { | ||
| 9 | |||
| 10 | // ################################################################################################ | ||
| 11 | // SOURCE (MOVE / CONSUME) | ||
| 12 | // ################################################################################################ | ||
| 13 | |||
| 14 | /** | ||
| 15 | * @brief CXXIter iterator source that takes over the input item source, and moves its items | ||
| 16 | * through the element stream, essentially "consuming" them. | ||
| 17 | */ | ||
| 18 | template<typename TContainer> | ||
| 19 | requires concepts::SourceContainer<std::remove_cvref_t<TContainer>> | ||
| 20 | class SrcMov : public IterApi<SrcMov<TContainer>> { | ||
| 21 | friend struct trait::Iterator<SrcMov<TContainer>>; | ||
| 22 | friend struct trait::DoubleEndedIterator<SrcMov<TContainer>>; | ||
| 23 | friend struct trait::ExactSizeIterator<SrcMov<TContainer>>; | ||
| 24 | friend struct trait::ContiguousMemoryIterator<SrcMov<TContainer>>; | ||
| 25 | using Src = trait::Source<TContainer>; | ||
| 26 | private: | ||
| 27 | std::unique_ptr<TContainer> container; | ||
| 28 | typename Src::IteratorState iter; | ||
| 29 | public: | ||
| 30 | 132 | SrcMov(TContainer&& container) : container(std::make_unique<TContainer>(std::move(container))), iter(Src::initIterator(*this->container)) {} | |
| 31 | }; | ||
| 32 | // ------------------------------------------------------------------------------------------------ | ||
| 33 | /** @private */ | ||
| 34 | template<typename TContainer> | ||
| 35 | struct trait::Iterator<SrcMov<TContainer>> { | ||
| 36 | using Src = trait::Source<TContainer>; | ||
| 37 | // CXXIter Interface | ||
| 38 | using Self = SrcMov<TContainer>; | ||
| 39 | using Item = typename Src::Item; | ||
| 40 | |||
| 41 | 424 | static constexpr inline IterValue<Item> next(Self& self) { | |
| 42 |
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424 | if(!Src::hasNext(*self.container, self.iter)) [[unlikely]] { return {}; } |
| 43 | 307 | return std::move(Src::next(*self.container, self.iter)); | |
| 44 | } | ||
| 45 | 22 | static constexpr inline SizeHint sizeHint(const Self& self) { return Src::sizeHint(*self.container); } | |
| 46 | 8 | static constexpr inline size_t advanceBy(Self& self, size_t n) { | |
| 47 | 8 | return Src::skipN(*self.container, self.iter, n); | |
| 48 | } | ||
| 49 | }; | ||
| 50 | /** @private */ | ||
| 51 | template<typename TContainer> | ||
| 52 | requires concepts::DoubleEndedSourceContainer<std::remove_cvref_t<TContainer>> | ||
| 53 | struct trait::DoubleEndedIterator<SrcMov<TContainer>> { | ||
| 54 | using Src = trait::Source<TContainer>; | ||
| 55 | using Item = typename Src::Item; | ||
| 56 | |||
| 57 | // CXXIter Interface | ||
| 58 | 148 | static constexpr inline IterValue<Item> nextBack(SrcMov<TContainer>& self) { | |
| 59 |
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148 | if(!Src::hasNext(*self.container, self.iter)) [[unlikely]] { return {}; } |
| 60 | 111 | return std::move(Src::nextBack(*self.container, self.iter)); | |
| 61 | } | ||
| 62 | }; | ||
| 63 | /** @private */ | ||
| 64 | template<typename TContainer> | ||
| 65 | struct trait::ExactSizeIterator<SrcMov<TContainer>> { | ||
| 66 | static constexpr inline size_t size(const SrcMov<TContainer>& self) { return self.container->size(); } | ||
| 67 | }; | ||
| 68 | /** @private */ | ||
| 69 | template<typename TContainer> | ||
| 70 | requires util::ContiguousMemoryContainer<TContainer> | ||
| 71 | struct trait::ContiguousMemoryIterator<SrcMov<TContainer>> { | ||
| 72 | using ItemPtr = std::add_pointer_t<std::remove_reference_t<typename SrcMov<TContainer>::Item>>; | ||
| 73 | 1 | static constexpr inline ItemPtr currentPtr(SrcMov<TContainer>& self) { | |
| 74 | 1 | return &trait::Source<TContainer>::peekNext(*self.container, self.iter); | |
| 75 | } | ||
| 76 | }; | ||
| 77 | |||
| 78 | |||
| 79 | |||
| 80 | // ################################################################################################ | ||
| 81 | // SOURCE (MUTABLE REFERENCE) | ||
| 82 | // ################################################################################################ | ||
| 83 | |||
| 84 | /** | ||
| 85 | * @brief CXXIter iterator source that mutably borrows the input item source, and passes mutable | ||
| 86 | * references to the items of the source through the iterator. | ||
| 87 | * @details This allows the iterator to modify the items while leaving them in the original | ||
| 88 | * item source. | ||
| 89 | */ | ||
| 90 | template<typename TContainer> | ||
| 91 | requires concepts::SourceContainer<std::remove_cvref_t<TContainer>> | ||
| 92 | class SrcRef : public IterApi<SrcRef<TContainer>> { | ||
| 93 | friend struct trait::Iterator<SrcRef<TContainer>>; | ||
| 94 | friend struct trait::DoubleEndedIterator<SrcRef<TContainer>>; | ||
| 95 | friend struct trait::ExactSizeIterator<SrcRef<TContainer>>; | ||
| 96 | friend struct trait::ContiguousMemoryIterator<SrcRef<TContainer>>; | ||
| 97 | using Src = trait::Source<TContainer>; | ||
| 98 | private: | ||
| 99 | TContainer& container; | ||
| 100 | typename Src::IteratorState iter; | ||
| 101 | public: | ||
| 102 | 743 | SrcRef(TContainer& container) : container(container), iter(Src::initIterator(this->container)) {} | |
| 103 | }; | ||
| 104 | // ------------------------------------------------------------------------------------------------ | ||
| 105 | /** @private */ | ||
| 106 | template<typename TContainer> | ||
| 107 | struct trait::Iterator<SrcRef<TContainer>> { | ||
| 108 | using Src = trait::Source<TContainer>; | ||
| 109 | // CXXIter Interface | ||
| 110 | using Self = SrcRef<TContainer>; | ||
| 111 | using Item = typename Src::ItemRef; | ||
| 112 | |||
| 113 | 2322 | static constexpr inline IterValue<Item> next(Self& self) { | |
| 114 |
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2322 | if(!Src::hasNext(self.container, self.iter)) [[unlikely]] { return {}; } |
| 115 | 1868 | return Src::next(self.container, self.iter); | |
| 116 | } | ||
| 117 | 508 | static constexpr inline SizeHint sizeHint(const Self& self) { return Src::sizeHint(self.container); } | |
| 118 | 94 | static constexpr inline size_t advanceBy(Self& self, size_t n) { | |
| 119 | 94 | return Src::skipN(self.container, self.iter, n); | |
| 120 | } | ||
| 121 | }; | ||
| 122 | /** @private */ | ||
| 123 | template<typename TContainer> | ||
| 124 | requires concepts::DoubleEndedSourceContainer<std::remove_cvref_t<TContainer>> | ||
| 125 | struct trait::DoubleEndedIterator<SrcRef<TContainer>> { | ||
| 126 | using Src = trait::Source<TContainer>; | ||
| 127 | using Item = typename Src::ItemRef; | ||
| 128 | |||
| 129 | // CXXIter Interface | ||
| 130 | 57 | static constexpr inline IterValue<Item> nextBack(SrcRef<TContainer>& self) { | |
| 131 |
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57 | if(!Src::hasNext(self.container, self.iter)) [[unlikely]] { return {}; } |
| 132 | 44 | return Src::nextBack(self.container, self.iter); | |
| 133 | } | ||
| 134 | }; | ||
| 135 | /** @private */ | ||
| 136 | template<typename TContainer> | ||
| 137 | struct trait::ExactSizeIterator<SrcRef<TContainer>> { | ||
| 138 | 24 | static constexpr inline size_t size(const SrcRef<TContainer>& self) { return self.container.size(); } | |
| 139 | }; | ||
| 140 | /** @private */ | ||
| 141 | template<typename TContainer> | ||
| 142 | requires util::ContiguousMemoryContainer<TContainer> | ||
| 143 | struct trait::ContiguousMemoryIterator<SrcRef<TContainer>> { | ||
| 144 | using ItemPtr = std::add_pointer_t<std::remove_reference_t<typename SrcRef<TContainer>::Item>>; | ||
| 145 | 37 | static constexpr inline ItemPtr currentPtr(SrcRef<TContainer>& self) { | |
| 146 | 37 | return &trait::Source<TContainer>::peekNext(self.container, self.iter); | |
| 147 | } | ||
| 148 | }; | ||
| 149 | |||
| 150 | |||
| 151 | |||
| 152 | // ################################################################################################ | ||
| 153 | // SOURCE (CONST REFERENCE) | ||
| 154 | // ################################################################################################ | ||
| 155 | |||
| 156 | /** | ||
| 157 | * @brief CXXIter iterator source that immutably borrows the input item source, and passes immutable | ||
| 158 | * references to the items of the source through the iterator. | ||
| 159 | * @details This guarantees the original source to stay untouched & unmodified. | ||
| 160 | */ | ||
| 161 | template<typename TContainer> | ||
| 162 | requires concepts::SourceContainer<std::remove_cvref_t<TContainer>> | ||
| 163 | class SrcCRef : public IterApi<SrcCRef<TContainer>> { | ||
| 164 | friend struct trait::Iterator<SrcCRef<TContainer>>; | ||
| 165 | friend struct trait::DoubleEndedIterator<SrcCRef<TContainer>>; | ||
| 166 | friend struct trait::ExactSizeIterator<SrcCRef<TContainer>>; | ||
| 167 | friend struct trait::ContiguousMemoryIterator<SrcCRef<TContainer>>; | ||
| 168 | using Src = trait::Source<TContainer>; | ||
| 169 | private: | ||
| 170 | const TContainer& container; | ||
| 171 | typename Src::ConstIteratorState iter; | ||
| 172 | public: | ||
| 173 | 78 | constexpr SrcCRef(const TContainer& container) : container(container), iter(Src::initIterator(this->container)) {} | |
| 174 | }; | ||
| 175 | // ------------------------------------------------------------------------------------------------ | ||
| 176 | /** @private */ | ||
| 177 | template<typename TContainer> | ||
| 178 | struct trait::Iterator<SrcCRef<TContainer>> { | ||
| 179 | using Src = trait::Source<TContainer>; | ||
| 180 | // CXXIter Interface | ||
| 181 | using Self = SrcCRef<TContainer>; | ||
| 182 | using Item = typename Src::ItemConstRef; | ||
| 183 | |||
| 184 | 108 | static constexpr inline IterValue<Item> next(Self& self) { | |
| 185 |
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108 | if(!Src::hasNext(self.container, self.iter)) [[unlikely]] { return {}; } |
| 186 | 89 | return Src::next(self.container, self.iter); | |
| 187 | } | ||
| 188 | 6 | static constexpr inline SizeHint sizeHint(const Self& self) { return Src::sizeHint(self.container); } | |
| 189 | 7 | static constexpr inline size_t advanceBy(Self& self, size_t n) { | |
| 190 | 7 | return Src::skipN(self.container, self.iter, n); | |
| 191 | } | ||
| 192 | }; | ||
| 193 | /** @private */ | ||
| 194 | template<typename TContainer> | ||
| 195 | requires concepts::DoubleEndedSourceContainer<std::remove_cvref_t<TContainer>> | ||
| 196 | struct trait::DoubleEndedIterator<SrcCRef<TContainer>> { | ||
| 197 | using Src = trait::Source<TContainer>; | ||
| 198 | using Item = typename Src::ItemConstRef; | ||
| 199 | |||
| 200 | // CXXIter Interface | ||
| 201 | 8 | static constexpr inline IterValue<Item> nextBack(SrcCRef<TContainer>& self) { | |
| 202 |
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8 | if(!Src::hasNext(self.container, self.iter)) [[unlikely]] { return {}; } |
| 203 | 5 | return Src::nextBack(self.container, self.iter); | |
| 204 | } | ||
| 205 | }; | ||
| 206 | /** @private */ | ||
| 207 | template<typename TContainer> | ||
| 208 | struct trait::ExactSizeIterator<SrcCRef<TContainer>> { | ||
| 209 | 2 | static constexpr inline size_t size(const SrcCRef<TContainer>& self) { return self.container.size(); } | |
| 210 | }; | ||
| 211 | /** @private */ | ||
| 212 | template<typename TContainer> | ||
| 213 | requires util::ContiguousMemoryContainer<TContainer> | ||
| 214 | struct trait::ContiguousMemoryIterator<SrcCRef<TContainer>> { | ||
| 215 | using ItemPtr = std::add_pointer_t<std::remove_reference_t<typename SrcCRef<TContainer>::Item>>; | ||
| 216 | 3 | static constexpr inline ItemPtr currentPtr(SrcCRef<TContainer>& self) { | |
| 217 | 3 | return &trait::Source<TContainer>::peekNext(self.container, self.iter); | |
| 218 | } | ||
| 219 | }; | ||
| 220 | |||
| 221 | } | ||
| 222 |