65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
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#ifndef ARBUTILS_DICTIONARY_HPP
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#define ARBUTILS_DICTIONARY_HPP
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#include <unordered_map>
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namespace Arbutils::Collections {
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template <class KeyT, class ValueT> class Dictionary {
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private:
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std::unordered_map<KeyT, ValueT> _map;
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using iterator = typename std::unordered_map<KeyT, ValueT, std::hash<KeyT>, std::equal_to<KeyT>,
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std::allocator<std::pair<const KeyT, ValueT>>>::iterator;
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public:
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explicit Dictionary(size_t capacity) : _map(capacity) {}
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inline void Insert(KeyT key, ValueT value) {
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auto v = _map.insert({key, value});
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if (!v.second)
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throw std::logic_error("Key already exists");
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}
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inline void Set(KeyT key, ValueT value) { _map[key] = value; }
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[[nodiscard]] inline ValueT& Get(KeyT key) {
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auto find = _map.find(key);
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if (find == _map.end()) {
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throw std::logic_error("Key not found");
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}
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return find->second;
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}
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[[nodiscard]] inline const ValueT& Get(KeyT key) const {
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auto find = _map.find(key);
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if (find == _map.end()) {
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throw std::logic_error("Key not found");
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}
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return find->second;
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}
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inline bool TryGet(KeyT key, ValueT& out) const {
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auto find = _map.find(key);
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if (find == _map.end()) {
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return false;
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}
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out = find->second;
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return true;
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}
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[[nodiscard]] inline size_t Count() const { return _map.size(); }
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inline bool Has(KeyT key) const noexcept { return _map.find(key) != _map.end(); }
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inline ValueT& operator[](KeyT key) { return Get(key); }
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inline const ValueT& operator[](KeyT key) const { return Get(key); }
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iterator begin() { return _map.begin(); }
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iterator begin() const { return _map.begin(); }
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iterator end() { return _map.end(); }
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iterator end() const { return _map.end(); }
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};
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}
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#endif // ARBUTILS_DICTIONARY_HPP
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