62 lines
943 B
C++
62 lines
943 B
C++
#pragma once
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#include <vector>
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#include <unordered_map>
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namespace Feather
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{
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template <typename T>
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class IDMapper
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{
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std::vector<T> m_IDtoValue;
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std::unordered_map<T, int> m_ValueToID;
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int m_NextID = 0;
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public:
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IDMapper(int size = 512)
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{
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m_IDtoValue.reserve(size);
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m_ValueToID.reserve(size);
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}
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inline void AddMapping(int id, T& value)
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{
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m_IDtoValue.insert(m_IDtoValue.begin() + id, value);
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m_ValueToID.insert({ value, id });
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if (m_NextID <= id) {
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m_NextID = id + 1;
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}
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}
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inline void Add(T& value)
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{
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AddMapping(m_NextID, value);
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}
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inline int GetID(const T& value) const
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{
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return m_ValueToID.at(value);
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}
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inline const T& ByID(int id) const
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{
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return m_IDtoValue.at(id);
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}
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inline bool HasValue(const T& value) const
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{
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return m_ValueToID.contains(value);
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}
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inline size_t Size() const
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{
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return m_IDtoValue.size();
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}
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};
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}
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