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-/*
- * ZeroTier One - Network Virtualization Everywhere
- * Copyright (C) 2011-2018 ZeroTier, Inc. https://www.zerotier.com/
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- * --
- *
- * You can be released from the requirements of the license by purchasing
- * a commercial license. Buying such a license is mandatory as soon as you
- * develop commercial closed-source software that incorporates or links
- * directly against ZeroTier software without disclosing the source code
- * of your own application.
- */
-
-#include "Constants.hpp"
-
-namespace ZeroTier {
-
-/**
- * A really simple fixed capacity vector
- *
- * This class does no bounds checking, so the user must ensure that
- * no more than C elements are ever added and that accesses are in
- * bounds.
- *
- * @tparam T Type to contain
- * @tparam C Capacity of vector
- */
-template<typename T,unsigned long C>
-class FCV
-{
-public:
- FCV() : _s(0) {}
- ~FCV() { clear(); }
-
- FCV(const FCV &v) :
- _s(v._s)
- {
- for(unsigned long i=0;i<_s;++i) {
- new (reinterpret_cast<T *>(_mem + (sizeof(T) * i))) T(reinterpret_cast<const T *>(v._mem)[i]);
- }
- }
-
- inline FCV &operator=(const FCV &v)
- {
- clear();
- _s = v._s;
- for(unsigned long i=0;i<_s;++i) {
- new (reinterpret_cast<T *>(_mem + (sizeof(T) * i))) T(reinterpret_cast<const T *>(v._mem)[i]);
- }
- return *this;
- }
-
- typedef T * iterator;
- typedef const T * const_iterator;
- typedef unsigned long size_type;
-
- inline iterator begin() { return (T *)_mem; }
- inline iterator end() { return (T *)(_mem + (sizeof(T) * _s)); }
- inline iterator begin() const { return (const T *)_mem; }
- inline iterator end() const { return (const T *)(_mem + (sizeof(T) * _s)); }
-
- inline T &operator[](const size_type i) { return reinterpret_cast<T *>(_mem)[i]; }
- inline const T &operator[](const size_type i) const { return reinterpret_cast<const T *>(_mem)[i]; }
-
- inline T &front() { return reinterpret_cast<T *>(_mem)[0]; }
- inline const T &front() const { return reinterpret_cast<const T *>(_mem)[0]; }
- inline T &back() { return reinterpret_cast<T *>(_mem)[_s - 1]; }
- inline const T &back() const { return reinterpret_cast<const T *>(_mem)[_s - 1]; }
-
- inline void push_back(const T &v) { new (reinterpret_cast<T *>(_mem + (sizeof(T) * _s++))) T(v); }
- inline void pop_back() { reinterpret_cast<T *>(_mem + (sizeof(T) * --_s))->~T(); }
-
- inline size_type size() const { return _s; }
- inline size_type capacity() const { return C; }
-
- inline void clear()
- {
- for(unsigned long i=0;i<_s;++i)
- reinterpret_cast<T *>(_mem + (sizeof(T) * i))->~T();
- _s = 0;
- }
-
-private:
- char _mem[sizeof(T) * C];
- unsigned long _s;
-};
-
-} // namespace ZeroTier