/*************************************************************************/ /* vmap.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #ifndef VMAP_H #define VMAP_H #include "core/templates/cowdata.h" #include "core/typedefs.h" template <class T, class V> class VMap { public: struct Pair { T key; V value; _FORCE_INLINE_ Pair() {} _FORCE_INLINE_ Pair(const T &p_key, const V &p_value) { key = p_key; value = p_value; } }; private: CowData<Pair> _cowdata; _FORCE_INLINE_ int _find(const T &p_val, bool &r_exact) const { r_exact = false; if (_cowdata.is_empty()) { return 0; } int low = 0; int high = _cowdata.size() - 1; const Pair *a = _cowdata.ptr(); int middle = 0; #ifdef DEBUG_ENABLED if (low > high) { ERR_PRINT("low > high, this may be a bug"); } #endif while (low <= high) { middle = (low + high) / 2; if (p_val < a[middle].key) { high = middle - 1; //search low end of array } else if (a[middle].key < p_val) { low = middle + 1; //search high end of array } else { r_exact = true; return middle; } } //return the position where this would be inserted if (a[middle].key < p_val) { middle++; } return middle; } _FORCE_INLINE_ int _find_exact(const T &p_val) const { if (_cowdata.is_empty()) { return -1; } int low = 0; int high = _cowdata.size() - 1; int middle; const Pair *a = _cowdata.ptr(); while (low <= high) { middle = (low + high) / 2; if (p_val < a[middle].key) { high = middle - 1; //search low end of array } else if (a[middle].key < p_val) { low = middle + 1; //search high end of array } else { return middle; } } return -1; } public: int insert(const T &p_key, const V &p_val) { bool exact; int pos = _find(p_key, exact); if (exact) { _cowdata.get_m(pos).value = p_val; return pos; } _cowdata.insert(pos, Pair(p_key, p_val)); return pos; } bool has(const T &p_val) const { return _find_exact(p_val) != -1; } void erase(const T &p_val) { int pos = _find_exact(p_val); if (pos < 0) { return; } _cowdata.remove_at(pos); } int find(const T &p_val) const { return _find_exact(p_val); } int find_nearest(const T &p_val) const { bool exact; return _find(p_val, exact); } _FORCE_INLINE_ int size() const { return _cowdata.size(); } _FORCE_INLINE_ bool is_empty() const { return _cowdata.is_empty(); } const Pair *get_array() const { return _cowdata.ptr(); } Pair *get_array() { return _cowdata.ptrw(); } const V &getv(int p_index) const { return _cowdata.get(p_index).value; } V &getv(int p_index) { return _cowdata.get_m(p_index).value; } const T &getk(int p_index) const { return _cowdata.get(p_index).key; } T &getk(int p_index) { return _cowdata.get_m(p_index).key; } inline const V &operator[](const T &p_key) const { int pos = _find_exact(p_key); CRASH_COND(pos < 0); return _cowdata.get(pos).value; } inline V &operator[](const T &p_key) { int pos = _find_exact(p_key); if (pos < 0) { pos = insert(p_key, V()); } return _cowdata.get_m(pos).value; } _FORCE_INLINE_ VMap() {} _FORCE_INLINE_ VMap(const VMap &p_from) { _cowdata._ref(p_from._cowdata); } inline void operator=(const VMap &p_from) { _cowdata._ref(p_from._cowdata); } }; #endif // VMAP_H