1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425
| #include <vector>
#include <iostream>
class Neuron
{
};
class Receiver
{
public:
Neuron& n;
Receiver(Neuron &nm) : n(nm) { }
Neuron& getNeuron(void) {
return n;
}
void receive(void) {}
};
template<typename _Alloc = std::allocator<Receiver *>>
class Axon
{
private:
typedef std::allocator_traits<_Alloc> _Alloc_traits;
_Alloc m_allocator;
public:
typedef typename _Alloc_traits::allocator_type allocator_type;
typedef typename _Alloc_traits::value_type value_type;
typedef typename _Alloc_traits::pointer pointer;
typedef typename _Alloc_traits::const_pointer const_pointer;
typedef typename _Alloc_traits::value_type& reference;
typedef typename const _Alloc_traits::value_type& const_reference;
typedef typename _Alloc_traits::size_type size_type;
/*! Axon iterator. */
class iterator
{
public:
typedef typename _Alloc_traits::allocator_type allocator_type;
typedef typename _Alloc_traits::value_type value_type;
typedef typename _Alloc_traits::pointer pointer;
typedef typename _Alloc_traits::const_pointer const_pointer;
typedef typename _Alloc_traits::value_type& reference;
typedef typename const _Alloc_traits::value_type& const_reference;
typedef typename _Alloc_traits::size_type size_type;
typedef std::random_access_iterator_tag iterator_category;
iterator(pointer ptr) : m_ptr(ptr) { }
iterator(const iterator& it) = default;
~iterator(void) = default;
iterator& operator=(const iterator& it) = default;
bool operator==(const iterator& it) const {
return (m_ptr == it.m_ptr);
}
bool operator!=(const iterator& it) const {
return (m_ptr != it.m_ptr);
}
iterator& operator++() {
++m_ptr;
return *this;
}
iterator& operator++(int) {
iterator tmp = *this;
++(*this);
return tmp;
}
iterator& operator--() {
--m_ptr;
return *this;
}
iterator& operator--(int) {
iterator tmp = *this;
--(*this);
return tmp;
}
reference operator*() const {
return *m_ptr;
}
pointer operator->() const {
return m_ptr;
}
private:
pointer m_ptr;
};
/*! Axon const iterator. */
class const_iterator
{
public:
typedef typename _Alloc_traits::allocator_type allocator_type;
typedef typename _Alloc_traits::value_type value_type;
typedef typename _Alloc_traits::pointer pointer;
typedef typename _Alloc_traits::const_pointer const_pointer;
typedef typename _Alloc_traits::value_type& reference;
typedef typename const _Alloc_traits::value_type& const_reference;
typedef typename _Alloc_traits::size_type size_type;
typedef std::random_access_iterator_tag iterator_category;
const_iterator(const_pointer ptr) : m_ptr(ptr) { }
const_iterator(const const_iterator& it) = default;
const_iterator(const iterator& it) {
m_ptr = &(*it);
}
~const_iterator(void) = default;
const_iterator& operator=(const const_iterator& it) = default;
bool operator==(const const_iterator& it) const {
return (m_ptr == it.m_ptr);
}
bool operator!=(const const_iterator& it) const {
return (m_ptr != it.m_ptr);
}
const_iterator& operator++() {
++m_ptr;
return *this;
}
const_iterator operator++(int) {
const_iterator tmp = *this;
++(*this);
return tmp;
}
const_iterator& operator--() {
--m_ptr;
return *this;
}
const_iterator operator--(int) {
const_iterator tmp = *this;
--(*this);
return tmp;
}
const_reference operator*() const {
return *m_ptr;
}
const_pointer operator->() const {
return m_ptr;
}
private:
const_pointer m_ptr;
};
/*!
* \brief Construct a new Axon object.
*
* \param parent A reference to the
* neuron we are belonging to.
*/
Axon(Neuron& parent) : m_parent(parent), m_receivers{ 0x0, 0x0, nullptr } {
}
~Axon() {
for (iterator it = begin(); it != end(); ++it) {
disconnect(it, true);
}
_Alloc_traits::deallocate(m_allocator, m_receivers.receivers, m_receivers.capacity);
}
/*!
* \brief Propagates a nervous influx.
*/
void propagate(void) const {
for (const_iterator it = begin(); it != end(); ++it) {
(*it)->receive();
}
}
/*!
* \brief Binds to a remote receiver.
*
* \param receiver The remote receiver to bind to.
*
* \return True on success, false on failure.
*/
bool connect(Receiver& receiver) {
#if defined(__V_CFG_NT_SUPPORT__)
assert(receiver.getNt() == m_parent.getNt());
#endif /* defined(__V_CFG_NT_SUPPORT__) */
if (m_receivers.capacity <= m_receivers.size) {
if (!reallocate(m_receivers.size + 1)) {
return false;
}
}
_Alloc_traits::construct(m_allocator, &(*(end())), &receiver);
++(m_receivers.size);
return true;
}
/*!
* \brief Breaks all connections with the specified neuron.
*
* \param neuron The neuron to break with.
* \param rr Do we have to destruct remote receivers ?
*/
void disconnect(Neuron& neuron, bool rr = true) {
for (const_iterator it = begin(); it != end(); ++it) {
std::cout << &(*it) << " - " << &(*end()) << std::endl;
if (&((*it)->getNeuron()) == &neuron) {
(void)(disconnect(it, rr)); /* Overloaded call */
}
}
}
iterator disconnect(const_iterator position, bool rr = true) {
size_type index = -(&(*(begin())) - &(*position));
_Alloc_traits::destroy(m_allocator, &(m_receivers.receivers[index]));
for (size_type i = index; i < ((m_receivers.size) - 1); ++i) {
_Alloc_traits::construct(m_allocator, &(m_receivers.receivers[i]), m_receivers.receivers[i + 1]);
_Alloc_traits::destroy(m_allocator, &(m_receivers.receivers[i + 1]));
}
--(m_receivers.size);
iterator it = &(m_receivers.receivers[index]);
return it;
}
/*
iterator disconnect(const_iterator first, const_iterator last, bool rr = true) {
}
*/
#if defined(__V_CFG_NT_SUPPORT__)
/*!
* \brief Retrieves the neurotransmitter associated
* with the parent neuron.
*
* \return A reference to a neurotransmitter object.
*/
Neurotransmitter& getNt(void) const {
return m_parent.getNt();
}
#endif /* defined(__V_CFG_NT_SUPPORT__) */
/*!
* \brief Gets the parent neuron.
*
* \return A reference to the parent neuron.
*/
Neuron& getNeuron(void) const {
return m_parent;
}
/*!
* \brief Requests that the capacity
* be at least enough to contain n receivers.
*
* \param n Minimum capacity for the receivers array.
* If n is greater than the current capacity, the
* function causes the container to reallocate its
* storage increasing its capacity to n (Or greater).
* In all other cases, the function call does not
* cause a reallocation and the capacity is not
* affected.
*
* \return True on success, false on failure.
*/
bool reserve(size_type n) {
if (n > m_receivers.capacity) {
if (!reallocate(n)) return false;
}
m_receivers.capacity = n;
return true;
}
/*!
* \brief Returns the size of the storage space currently
* allocated for receivers, expressed in terms
* of elements.
*
* \return The storage space currently
* allocated for receivers.
*/
size_type capacity(void) const {
return m_receivers.capacity;
}
/*!
* \brief Returns the number of receivers
* connected to the axon.
*/
size_type size(void) const {
return m_receivers.size;
}
iterator begin(void) {
return iterator(m_receivers.receivers);
}
const_iterator begin(void) const {
return const_iterator(m_receivers.receivers);
}
const_iterator cbegin(void) const {
return const_iterator(m_receivers.receivers);
}
iterator end(void) {
return iterator(m_receivers.receivers + m_receivers.size);
}
const_iterator end(void) const {
return const_iterator(m_receivers.receivers + m_receivers.size);
}
const_iterator cend(void) const {
return const_iterator(m_receivers.receivers + m_receivers.size);
}
private:
/*!
* \brief Modify receivers array size.
*
* \param new_capacity The new size of the storage array.
*
* \return True on success, false on failure.
*/
bool reallocate(size_type new_capacity) {
pointer new_array = nullptr;
try {
new_array = _Alloc_traits::allocate(m_allocator, new_capacity);
}
catch (...) {
return false;
}
for (size_type i = 0; i < m_receivers.size; i++) {
_Alloc_traits::construct(m_allocator, &new_array[i], std::move(m_receivers.receivers[i]));
_Alloc_traits::destroy(m_allocator, &(m_receivers.receivers[i]));
}
_Alloc_traits::deallocate(m_allocator, m_receivers.receivers, m_receivers.capacity);
m_receivers.receivers = new_array;
m_receivers.capacity = new_capacity;
return true;
}
/*! The neuron we are belonging to. */
Neuron& m_parent;
/*! The receivers array (And its properties). */
struct {
size_type size, capacity;
pointer receivers;
} m_receivers;
};
#include <iostream>
int main()
{
Neuron n;
Receiver x(n);
Axon s(n);
s.connect(x);
s.connect(x);
s.connect(x);
s.connect(x);
s.connect(x);
s.disconnect(n, true);
/*
for (Axon<std::allocator<Receiver*>>::iterator it = s.begin(); it != s.end(); ++it) {
// std::cout << -(&(*(s.begin())) - &(*it)) << std::endl;
}
*/
//s.disconnect(n, true);
return 0;
} |
Partager