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218 lines
4.9 KiB
C++
218 lines
4.9 KiB
C++
/*************************************************************************/
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/* vmap.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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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 VMAP_H
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#define VMAP_H
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#include "typedefs.h"
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#include "vector.h"
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template<class T,class V>
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class VMap {
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struct _Pair {
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T key;
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V value;
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_FORCE_INLINE_ _Pair() {}
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_FORCE_INLINE_ _Pair(const T& p_key, const V& p_value) {
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key=p_key;
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value=p_value;
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}
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};
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Vector<_Pair> _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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int middle;
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const _Pair *a=&_data[0];
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while( low <= high )
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{
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middle = ( low + high ) / 2;
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if( p_val < a[ middle].key ) {
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high = middle - 1; //search low end of array
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} else if ( a[middle].key < 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].key<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 _Pair *a=&_data[0];
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while( low <= high )
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{
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middle = ( low + high ) / 2;
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if( p_val < a[ middle].key ) {
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high = middle - 1; //search low end of array
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} else if ( a[middle].key < 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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int insert(const T& p_key,const V& p_val) {
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bool exact;
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int pos = _find(p_key,exact);
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if (exact) {
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_data[pos].value=p_val;
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return pos;
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}
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_data.insert(pos,_Pair(p_key,p_val));
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return pos;
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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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int find_nearest(const T& p_val) const {
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bool exact;
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return _find(p_val,exact);
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}
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_FORCE_INLINE_ int size() const { return _data.size(); }
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_FORCE_INLINE_ bool empty() const { return _data.empty(); }
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const _Pair *get_array() const {
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return _data.ptr();
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}
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_Pair *get_array() {
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return _data.ptr();
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}
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const V& getv(int p_index) const {
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return _data[p_index].value;
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}
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V& getv(int p_index) {
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return _data[p_index].value;
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}
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const T& getk(int p_index) const {
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return _data[p_index].key;
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}
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T& getk(int p_index) {
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return _data[p_index].key;
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}
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inline const V& operator[](const T& p_key) const {
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int pos = _find_exact(p_key);
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if (pos<0) {
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const T& aux=*((T*)0); //nullreturn
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ERR_FAIL_COND_V(pos<1,aux);
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}
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return _data[pos].value;
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}
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inline V& operator[](const T& p_key) {
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int pos = _find_exact(p_key);
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if (pos<0) {
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V val;
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pos = insert(p_key,val);
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}
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return _data[pos].value;
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}
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};
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#endif // VMAP_H
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