ArraySet.h

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#pragma once
#include "Hashers.h"
#include "catapult/types.h"
#include <set>
#include <unordered_map>
#include <unordered_set>
 
namespace catapult { namespace utils {
 
    template<typename TArray>
    struct ArrayPointerHasher {
        size_t operator()(const TArray* pArray) const {
            return ArrayHasher<TArray>()(*pArray);
        }
    };
 
    template<typename TArray>
    struct ArrayPointerEquality {
        bool operator()(const TArray* pLhs, const TArray* pRhs) const {
            return *pLhs == *pRhs;
        }
    };
 
    template<typename TArray>
    using ArraySet = std::unordered_set<TArray, ArrayHasher<TArray>>;
 
    template<typename TArray>
    using ArrayPointerSet = std::unordered_set<const TArray*, ArrayPointerHasher<TArray>, ArrayPointerEquality<TArray>>;
 
    template<typename TArray>
    using ArrayPointerFlagMap = std::unordered_map<const TArray*, bool, ArrayPointerHasher<TArray>, ArrayPointerEquality<TArray>>;
 
    // region well known array sets
 
    using HashSet = ArraySet<Hash256>;
 
    using KeySet = ArraySet<Key>;
 
    using SortedKeySet = std::set<Key>;
 
    using HashPointerSet = ArrayPointerSet<Hash256>;
 
    using KeyPointerSet = ArrayPointerSet<Key>;
 
    // endregion
}}