BLT/include/blt/std/hashmap.h

/*
 * Created by Brett on 31/03/23.
 * Licensed under GNU General Public License V3.0
 * See LICENSE file for license detail
 */

#ifndef BLT_HASH_MAP_H
#define BLT_HASH_MAP_H

#ifndef HASHMAP
    #if defined __has_include && __has_include(<parallel_hashmap/phmap.h>)
        
        #include <parallel_hashmap/phmap.h>
        #include <parallel_hashmap/phmap_fwd_decl.h>

template<class K, class V,
        class Hash  = phmap::priv::hash_default_hash<K>,
        class Eq    = phmap::priv::hash_default_eq<K>,
        class Alloc = phmap::priv::Allocator<phmap::priv::Pair<const K, V>>>
using HASHMAP = phmap::flat_hash_map<K, V, Hash, Eq, Alloc>;
template<class T,
        class Hash  = phmap::priv::hash_default_hash<T>,
        class Eq    = phmap::priv::hash_default_eq<T>,
        class Alloc = phmap::priv::Allocator<T>>
using HASHSET = phmap::flat_hash_set<T, Hash, Eq, Alloc>;
    #else
        
        #include <unordered_map>
        #include <unordered_set>

template<typename K, typename V,
        typename Hash = std::hash<K>,
        typename Eq = std::equal_to<K>,
        typename Alloc = std::allocator<std::pair<const K, V>>>
using HASHMAP = std::unordered_map<K, V, Hash, Eq, Alloc>;

template<typename K,
        typename Hash = std::hash<K>,
        typename Eq = std::equal_to<K>,
        typename Alloc = std::allocator<K>>
using HASHSET = std::unordered_set<K, Hash, Eq, Alloc>;
    #endif
#endif

#endif //BLT_HASH_MAP_H