a7f49ac9a1
Happy new year to the wonderful Godot community! We're starting a new decade with a well-established, non-profit, free and open source game engine, and tons of further improvements in the pipeline from hundreds of contributors. Godot will keep getting better, and we're looking forward to all the games that the community will keep developing and releasing with it.
145 lines
4.1 KiB
C++
145 lines
4.1 KiB
C++
/*************************************************************************/
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/* vset.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef VSET_H
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#define VSET_H
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#include "core/typedefs.h"
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#include "core/vector.h"
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template <class T>
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class VSet {
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Vector<T> _data;
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_FORCE_INLINE_ int _find(const T &p_val, bool &r_exact) const {
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r_exact = false;
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if (_data.empty())
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return 0;
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int low = 0;
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int high = _data.size() - 1;
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const T *a = &_data[0];
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int middle = 0;
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#ifdef DEBUG_ENABLED
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if (low > high)
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ERR_PRINT("low > high, this may be a bug");
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#endif
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while (low <= high) {
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middle = (low + high) / 2;
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if (p_val < a[middle]) {
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high = middle - 1; //search low end of array
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} else if (a[middle] < p_val) {
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low = middle + 1; //search high end of array
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} else {
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r_exact = true;
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return middle;
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}
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}
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//return the position where this would be inserted
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if (a[middle] < p_val)
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middle++;
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return middle;
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}
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_FORCE_INLINE_ int _find_exact(const T &p_val) const {
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if (_data.empty())
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return -1;
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int low = 0;
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int high = _data.size() - 1;
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int middle;
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const T *a = &_data[0];
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while (low <= high) {
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middle = (low + high) / 2;
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if (p_val < a[middle]) {
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high = middle - 1; //search low end of array
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} else if (a[middle] < p_val) {
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low = middle + 1; //search high end of array
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} else {
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return middle;
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}
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}
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return -1;
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}
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public:
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void insert(const T &p_val) {
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bool exact;
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int pos = _find(p_val, exact);
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if (exact)
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return;
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_data.insert(pos, p_val);
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}
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bool has(const T &p_val) const {
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return _find_exact(p_val) != -1;
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}
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void erase(const T &p_val) {
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int pos = _find_exact(p_val);
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if (pos < 0)
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return;
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_data.remove(pos);
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}
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int find(const T &p_val) const {
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return _find_exact(p_val);
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}
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_FORCE_INLINE_ bool empty() const { return _data.empty(); }
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_FORCE_INLINE_ int size() const { return _data.size(); }
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inline T &operator[](int p_index) {
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return _data.write[p_index];
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}
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inline const T &operator[](int p_index) const {
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return _data[p_index];
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}
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};
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#endif // VSET_H
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