GetFEM  5.4.3
dal_tree_sorted.h
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1 /* -*- c++ -*- (enables emacs c++ mode) */
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3 
4  Copyright (C) 1995-2020 Yves Renard
5 
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30 ===========================================================================*/
31 
32 /**@file dal_tree_sorted.h
33  @author Yves Renard <[email protected]>
34  @date June 01, 1995
35  @brief a balanced tree stored in a dal::dynamic_array
36 
37  Oneday this will be replaced with a std::map.
38 */
39 #ifndef DAL_TREE_SORTED_H__
40 #define DAL_TREE_SORTED_H__
41 
42 #include "dal_tas.h"
43 
44 namespace dal {
45 
46  /* ********************************************************************* */
47  /* Definitition des iterateurs. */
48  /* ********************************************************************* */
49  /* Attention, l'iterateur n'est plus valide apres une operation */
50  /* d'insertion ou de suppression. */
51  /* ********************************************************************* */
52 
53  static const size_t DEPTHMAX__ = 64;
54  static const size_t ST_NIL = size_t(-1);
55 
56  template<typename T, typename COMP = gmm::less<T>, unsigned char pks = 5>
57  class dynamic_tree_sorted;
58 
59  template<typename T, typename COMP, unsigned char pks> struct tsa_iterator {
60  typedef T value_type;
61  typedef value_type& reference;
62  typedef value_type* pointer;
63  typedef size_t size_type;
64  typedef ptrdiff_t difference_type;
65  typedef std::bidirectional_iterator_tag iterator_category;
66  typedef gmm::int8_type short_type;
67 
68  dynamic_tree_sorted<T, COMP, pks> *p;
69  size_type path[DEPTHMAX__];
70  short_type dir[DEPTHMAX__];
71  size_type depth;
72 
73  tsa_iterator(void) {}
74  tsa_iterator(dynamic_tree_sorted<T, COMP, pks> &tsa)
75  { p = &tsa; depth = 0; }
76  void copy(const tsa_iterator<T, COMP, pks> &it);
77  tsa_iterator(const tsa_iterator &it) { copy(it); }
78  tsa_iterator &operator =(const tsa_iterator &it)
79  { copy(it); return *this;}
80 
81  inline size_type index(void) const
82  { return (depth==0) ? ST_NIL : path[depth-1];}
83  inline size_type father(void) const
84  { return (depth<=1) ? ST_NIL : path[depth-2];}
85  inline size_type index_(void) const
86  { return path[(depth-1) & 63]; }
87  inline short_type direction(void) const
88  { return (depth==0) ? 0 : dir[depth-1];}
89  inline void up(void) { if (depth > 0) depth--; }
90  void down_left(void);
91  void down_right(void);
92  void down_left_all(void);
93  void down_right_all(void);
94  void root(void) { path[0] = p->root_elt(); dir[0] = 0; depth = 1; }
95  void first(void) { root(); down_left_all(); }
96  void last(void) { root(); down_right_all(); }
97  void end(void) { depth = 0; }
98 
99  tsa_iterator &operator ++();
100  tsa_iterator &operator --();
101  tsa_iterator operator ++(int)
102  { tsa_iterator tmp = *this; ++(*this); return tmp; }
103  tsa_iterator operator --(int)
104  { tsa_iterator tmp = *this; --(*this); return tmp; }
105 
106  reference operator *() const { return (*p)[index()]; }
107  pointer operator->() const { return &(operator*()); }
108 
109  bool operator ==(const tsa_iterator &i) const
110  { return ((i.depth == 0 && depth == 0) || (i.index_() == index_())); }
111  bool operator !=(const tsa_iterator &i) const
112  { return !((i.depth == 0 && depth == 0) || (i.index_() == index_())); }
113  };
114 
115  template<typename T, typename COMP, unsigned char pks>
116  void tsa_iterator<T, COMP, pks>::copy(const tsa_iterator<T, COMP, pks> &it) {
117  p = it.p; depth = it.depth;
118  size_type *p1it=&(path[0]), *pend=&path[depth];
119  const size_type *p2it=&(it.path[0]);
120  short_type *d1it=&(dir[0]);
121  const short_type *d2it=&(it.dir[0]);
122  while (p1it != pend) { *p1it++ = *p2it++; *d1it++ = *d2it++; }
123  }
124 
125  template<typename T, typename COMP, unsigned char pks>
126  void tsa_iterator<T, COMP, pks>::down_left(void) {
127  GMM_ASSERT3(depth > 0 && depth < DEPTHMAX__ && index() != ST_NIL,
128  "internal error");
129  path[depth] = p->left_elt(index_()); dir[depth++] = -1;
130  }
131 
132  template<typename T, typename COMP, unsigned char pks>
133  void tsa_iterator<T, COMP, pks>::down_right(void) {
134  GMM_ASSERT3(depth > 0 && depth < DEPTHMAX__ && index() != ST_NIL,
135  "internal error");
136  path[depth] = p->right_elt(index_()); dir[depth++] = 1;
137  }
138 
139  template<typename T, typename COMP, unsigned char pks>
140  void tsa_iterator<T, COMP, pks>::down_left_all(void)
141  { while (index_() != ST_NIL) down_left(); up(); }
142 
143  template<typename T, typename COMP, unsigned char pks>
144  void tsa_iterator<T, COMP, pks>::down_right_all(void)
145  { while (index_() != ST_NIL) down_right(); up();}
146 
147  template<typename T, typename COMP, unsigned char pks>
148  tsa_iterator<T, COMP, pks> &tsa_iterator<T, COMP, pks>::operator ++() {
149  if (depth == 0) first();
150  if (p->right_elt(index_()) != ST_NIL) { down_right(); down_left_all(); }
151  else { up(); while (dir[depth] == 1) up(); }
152  return *this;
153  }
154 
155  template<typename T, typename COMP, unsigned char pks>
156  tsa_iterator<T, COMP, pks> &tsa_iterator<T, COMP, pks>::operator --() {
157  if (depth == 0) last();
158  if (p->left_elt(index_()) != ST_NIL) { down_left(); down_right_all(); }
159  else { up(); while (dir[depth] == -1) up(); }
160  return *this;
161  }
162 
163 
164  template<typename T, typename COMP, unsigned char pks> struct const_tsa_iterator {
165  typedef T value_type;
166  typedef const value_type& reference;
167  typedef const value_type* pointer;
168  typedef size_t size_type;
169  typedef ptrdiff_t difference_type;
170  typedef std::bidirectional_iterator_tag iterator_category;
171  typedef gmm::int8_type short_type;
172 
173  const dynamic_tree_sorted<T, COMP, pks> *p;
174  size_type path[DEPTHMAX__];
175  short_type dir[DEPTHMAX__];
176  size_type depth;
177 
178  const_tsa_iterator(void) {}
179  const_tsa_iterator(const dynamic_tree_sorted<T, COMP, pks> &tsa)
180  { p = &tsa; depth = 0; }
181  void copy(const const_tsa_iterator<T, COMP, pks> &it);
182  const_tsa_iterator(const const_tsa_iterator &it) { this->copy(it); }
183  const_tsa_iterator(const tsa_iterator<T, COMP, pks> &it);
184  const_tsa_iterator &operator =(const const_tsa_iterator &it)
185  { copy(it); return *this; }
186 
187  inline size_type index(void) const
188  { return (depth==0) ? ST_NIL : path[depth-1];}
189  inline size_type father(void) const
190  { return (depth<=1) ? ST_NIL : path[depth-2];}
191  inline size_type index_(void) const { return path[depth-1]; }
192  inline short_type direction(void) const
193  { return (depth==0) ? short_type(0) : dir[depth-1];}
194  inline void up(void) { if (depth > 0) depth--; }
195  void down_left(void);
196  void down_right(void);
197  void down_left_all(void);
198  void down_right_all(void);
199  void root(void) { path[0] = p->root_elt(); dir[0] = 0; depth = 1; }
200  void first(void) { root(); down_left_all(); }
201  void last(void) { root(); down_right_all(); }
202  void end(void) { depth = 0; }
203 
204  const_tsa_iterator &operator ++();
205  const_tsa_iterator &operator --();
206  const_tsa_iterator operator ++(int)
207  { const_tsa_iterator tmp = *this; ++(*this); return tmp; }
208  const_tsa_iterator operator --(int)
209  { const_tsa_iterator tmp = *this; --(*this); return tmp; }
210 
211  reference operator *() const { return (*p)[index()]; }
212  pointer operator->() const { return &(operator*()); }
213 
214  bool operator ==(const const_tsa_iterator &i) const
215  { return ((i.depth == 0 && depth == 0) || (i.index_() == index_())); }
216  bool operator !=(const const_tsa_iterator &i) const
217  { return !((i.depth == 0 && depth == 0) || (i.index_() == index_())); }
218  };
219 
220  template<typename T, typename COMP, unsigned char pks>
221  std::ostream& operator<<(std::ostream& o,
222  const const_tsa_iterator<T,COMP,pks>& it) {
223  o << "const_tsa_iterator : depth=" << it.depth << ", path/dir=[";
224  for (unsigned i=0; i < it.depth; ++i)
225  o << "{" << it.path[i] << ", " << int(it.dir[i]) << "} ";
226  o << "]";
227  return o;
228  }
229 
230  template<typename T, typename COMP, unsigned char pks>
231  void const_tsa_iterator<T, COMP, pks>::copy
232  (const const_tsa_iterator<T, COMP, pks> &it) {
233  p = it.p; depth = it.depth;
234  size_type *p1it=&(path[0]), *pend=&path[depth];
235  const size_type *p2it=&(it.path[0]);
236  short_type *d1it=&(dir[0]);
237  const short_type *d2it=&(it.dir[0]);
238  while (p1it != pend) { *p1it++ = *p2it++; *d1it++ = *d2it++; }
239  }
240 
241  template<typename T, typename COMP, unsigned char pks>
242  const_tsa_iterator<T, COMP, pks>::const_tsa_iterator
243  (const tsa_iterator<T, COMP, pks> &it) {
244  p = it.p; depth = it.depth;
245  size_type *p1it=&(path[0]), *pend=&path[depth];
246  const size_type *p2it=&(it.path[0]);
247  short_type *d1it=&(dir[0]);
248  const short_type *d2it=&(it.dir[0]);
249  while (p1it != pend) { *p1it++ = *p2it++; *d1it++ = *d2it++; }
250  }
251 
252  template<typename T, typename COMP, unsigned char pks>
253  void const_tsa_iterator<T, COMP, pks>::down_left(void) {
254  GMM_ASSERT3(depth > 0 && depth < DEPTHMAX__ && index() != ST_NIL,
255  "internal error");
256  path[depth] = p->left_elt(index_()); dir[depth++] = -1;
257  }
258 
259  template<typename T, typename COMP, unsigned char pks>
260  void const_tsa_iterator<T, COMP, pks>::down_right(void) {
261  GMM_ASSERT3(depth > 0 && depth < DEPTHMAX__ && index() != ST_NIL,
262  "internal error");
263  path[depth] = p->right_elt(index_()); dir[depth++] = 1;
264  }
265 
266  template<typename T, typename COMP, unsigned char pks>
267  void const_tsa_iterator<T, COMP, pks>::down_left_all(void)
268  { while (index_() != ST_NIL) down_left(); up(); }
269 
270  template<typename T, typename COMP, unsigned char pks>
271  void const_tsa_iterator<T, COMP, pks>::down_right_all(void)
272  { while (index_() != ST_NIL) down_right(); up();}
273 
274  template<typename T, typename COMP, unsigned char pks>
275  const_tsa_iterator<T, COMP, pks> &
276  const_tsa_iterator<T, COMP, pks>::operator ++() {
277  if (depth == 0) last();
278  if (p->right_elt(index_()) != ST_NIL) { down_right(); down_left_all(); }
279  else { up(); while (dir[depth] == 1) up(); }
280  return *this;
281  }
282 
283  template<typename T, typename COMP, unsigned char pks>
284  const_tsa_iterator<T, COMP, pks> &
285  const_tsa_iterator<T, COMP, pks>::operator --() {
286  if (depth == 0) last();
287  if (p->left_elt(index_()) != ST_NIL) { down_left(); down_right_all(); }
288  else { up(); while (dir[depth] == -1) up(); }
289  return *this;
290  }
291 
292  /* ********************************************************************* */
293  /* Definitition of dynamic_tree_sorted. */
294  /* ********************************************************************* */
295 
296  template<typename T, typename COMP, unsigned char pks>
297  class dynamic_tree_sorted : public dynamic_tas<T, pks> {
298  public :
299 
300  typedef typename dynamic_tas<T, pks>::tas_iterator tas_iterator;
301  typedef typename dynamic_tas<T, pks>::const_tas_iterator const_tas_iterator;
302  typedef typename dynamic_tas<T, pks>::iterator iterator;
303  typedef typename dynamic_tas<T, pks>::const_iterator const_iterator;
304  typedef typename dynamic_tas<T, pks>::size_type size_type;
305 
306  typedef gmm::int8_type short_type;
307  typedef tsa_iterator<T, COMP, pks> sorted_iterator;
308  typedef const_tsa_iterator<T, COMP, pks> const_sorted_iterator;
309  typedef std::reverse_iterator<const_iterator> const_reverse_sorted_iterator;
310  typedef std::reverse_iterator<iterator> reverse_sorted_iterator;
311 
312  protected :
313 
314  COMP compar;
315  struct tree_elt {
316  size_type r, l;
317  short_type eq;
318  inline void init(void) { eq = 0; r = l = ST_NIL; }
319  tree_elt(void) { init(); }
320  };
321 
322  dynamic_array<tree_elt, pks> nodes;
323  size_type first_node;
324 
325  size_type rotate_right(size_type i);
326  size_type rotate_left(size_type i);
327  size_type rotate_left_right(size_type i);
328  size_type rotate_right_left(size_type i);
329  size_type balance_again(size_type i);
330 
331  void add_index(size_type i, const_sorted_iterator &it);
332  void sup_index(size_type i, const_sorted_iterator &it);
333 
334  public :
335 
336  int verify_balance(size_type i = size_type(-2)) const { // for debugging
337  if (i == size_type(-2)) i = first_node;
338  if (i == ST_NIL) return 0;
339  int l = verify_balance(nodes[i].l);
340  int r = verify_balance(nodes[i].r);
341  GMM_ASSERT3(short_type(r - l) == nodes[i].eq &&
342  (nodes[i].eq <= 1 && nodes[i].eq>=-1), "internal error");
343  return std::max(l,r) + 1;
344  }
345 
346  void insert_path(const T &elt, const_sorted_iterator &it) const;
347  void search_sorted_iterator(const T &elt,
348  const_sorted_iterator &it) const;
349  void find_sorted_iterator(size_type i, const_sorted_iterator &it) const;
350  COMP &comparator(void) { return compar; }
351  const COMP &comparator(void) const { return compar; }
352 
353  dynamic_tree_sorted(COMP cp = COMP())
354  { first_node = ST_NIL; compar = cp; }
355 
356  size_type root_elt(void) const { return first_node; }
357  size_type right_elt(size_type n) const { return nodes[n].r; }
358  size_type left_elt(size_type n) const { return nodes[n].l; }
359  short_type balance(size_type n) const
360  { return short_type((n == ST_NIL) ? 0 : nodes[n].eq); }
361  size_type search(const T &elt) const {
362  const_sorted_iterator it(*this);
363  search_sorted_iterator(elt,it);
364  return it.index();
365  }
366  size_type search_ge(const T &) const;
367  size_type memsize(void) const;
368  void clear(void)
369  { first_node = ST_NIL; nodes.clear(); dynamic_tas<T,pks>::clear(); }
370  size_type add(const T &);
371  void add_to_index(size_type, const T &);
372  size_type add_norepeat(const T &, bool replace = false,
373  bool *present = NULL);
374  void resort(void);
375  void sup(size_type);
376  void swap(size_type, size_type);
377  void compact(void);
378 
379  sorted_iterator sorted_begin(void)
380  { sorted_iterator it(*this); it.first(); return it; }
381  const_sorted_iterator sorted_begin(void) const
382  { const_sorted_iterator it(*this); it.first(); return it; }
383  sorted_iterator sorted_end(void)
384  { sorted_iterator it(*this); it.end(); return it; }
385  const_sorted_iterator sorted_end(void) const
386  { const_sorted_iterator it(*this); it.end(); return it; }
387  reverse_sorted_iterator rbegin(void)
388  { return reverse_sorted_iterator(this->end()); }
389  const_reverse_sorted_iterator rbegin(void) const
390  { return const_reverse_sorted_iterator(this->end()); }
391  reverse_sorted_iterator rend(void)
392  { return reverse_sorted_iterator(this->begin()); }
393  const_reverse_sorted_iterator rend(void) const
394  { return const_reverse_sorted_iterator(this->begin()); }
395  sorted_iterator sorted_first(void)
396  { sorted_iterator it(*this); it.first(); return it; }
397  const_sorted_iterator sorted_first(void) const
398  { const_sorted_iterator it(*this); it.first(); return it; }
399  sorted_iterator sorted_last(void)
400  { sorted_iterator it(*this); it.last(); return it; }
401  const_sorted_iterator sorted_last(void) const
402  { const_sorted_iterator it(*this); it.last(); return it; }
403 // sorted_iterator sorted_ge(const T &elt);
404  const_sorted_iterator sorted_ge(const T &elt) const;
405  };
406 
407  template<typename T, typename COMP, unsigned char pks>
408  std::ostream& operator <<(std::ostream& o,
409  dynamic_tree_sorted<T, COMP, pks> &m) {
410  o << "Nomber of elt :" << m.card() << '\n';
411  o << "Index du noeud racine :" << m.root_elt() << '\n';
412  for (size_t i = 0; i < m.size(); ++i)
413  o << "elt " << i << " left :" << int(m.left_elt(i)) << " right : "
414  << int(m.right_elt(i)) << " balance :" << int(m.balance(i)) << '\n';
415  return o;
416  }
417 
418  template<typename T, typename COMP, unsigned char pks>
419  typename dynamic_tree_sorted<T, COMP, pks>::size_type
420  dynamic_tree_sorted<T, COMP, pks>::rotate_right(size_type i) {
421  tree_elt *pni = &(nodes[i]);
422  size_type f = pni->l;
423  tree_elt *pnf = &(nodes[f]);
424  pni->l = pnf->r; pnf->r = i; pnf->eq = pni->eq = 0;
425  return f;
426  }
427 
428  template<typename T, typename COMP, unsigned char pks>
429  typename dynamic_tree_sorted<T, COMP, pks>::size_type
430  dynamic_tree_sorted<T, COMP, pks>::rotate_left(size_type i) {
431  tree_elt *pni = &(nodes[i]);
432  size_type f = pni->r;
433  tree_elt *pnf = &(nodes[f]);
434  pni->r = pnf->l; pnf->l = i; pnf->eq = pni->eq = 0;
435  return f;
436  }
437 
438  template<typename T, typename COMP, unsigned char pks>
439  typename dynamic_tree_sorted<T, COMP, pks>::size_type
440  dynamic_tree_sorted<T, COMP, pks>::rotate_left_right(size_type i) {
441  tree_elt *pni = &(nodes[i]);
442  size_type f = pni->l;
443  tree_elt *pnf = &(nodes[f]);
444  short_type uba = pnf->eq, ubb = nodes[pnf->r].eq;
445  pni->l = rotate_left(f); f = rotate_right(i);
446  pnf = &(nodes[f]);
447  pnf->eq = short_type(uba - 1);
448  nodes[pnf->l].eq = short_type(uba - 1 - ((ubb == 1) ? 1 : 0));
449  nodes[pnf->r].eq = short_type(((ubb == -1) ? 1 : 0));
450 
451  if (uba == 0 && ubb == 1)
452  {
453  pnf->l = balance_again(pnf->l);
454  if (nodes[pnf->l].eq == 0) pnf->eq = 0;
455  }
456  return f;
457  }
458 
459  template<typename T, typename COMP, unsigned char pks>
460  typename dynamic_tree_sorted<T, COMP, pks>::size_type
461  dynamic_tree_sorted<T, COMP, pks>::rotate_right_left(size_type i) {
462  size_type f = nodes[i].r;
463  short_type uba = nodes[f].eq, ubb = nodes[nodes[f].l].eq;
464  nodes[i].r = rotate_right(f); f = rotate_left(i);
465  nodes[f].eq = short_type(uba + 1);
466  nodes[nodes[f].r].eq = short_type(uba + 1 + ((ubb == -1) ? 1 : 0));
467  nodes[nodes[f].l].eq = short_type(((ubb == +1) ? -1 : 0));
468 
469  if (uba == 0 && ubb == -1) {
470  nodes[f].r = balance_again(nodes[f].r);
471  if (nodes[nodes[f].r].eq == 0) nodes[f].eq = 0;
472  }
473  return f;
474  }
475 
476  template<typename T, typename COMP, unsigned char pks>
477  typename dynamic_tree_sorted<T, COMP, pks>::size_type
478  dynamic_tree_sorted<T, COMP, pks>::balance_again(size_type i) {
479  tree_elt *pn = &(nodes[i]);
480  switch (pn->eq) {
481  case -2 : if (nodes[pn->l].eq == -1) return rotate_right(i);
482  else return rotate_left_right(i);
483  case +2 : if (nodes[pn->r].eq == 1) return rotate_left(i);
484  else return rotate_right_left(i);
485  case 0 : case -1 : case 1 : return i;
486  default : GMM_ASSERT3(false, "internal error");
487  }
488  return ST_NIL;
489  }
490 
491  template<typename T, typename COMP, unsigned char pks>
492  void dynamic_tree_sorted<T, COMP, pks>::search_sorted_iterator
493  (const T &elt, const_sorted_iterator &it) const{
494  it.root();
495  while (it.index() != ST_NIL) {
496  int cp = compar(elt, (*this)[it.index()]);
497  if (cp < 0) it.down_left();
498  else if (cp > 0) it.down_right(); else break;
499  }
500  }
501 
502  template<typename T, typename COMP, unsigned char pks>
503  void dynamic_tree_sorted<T, COMP, pks>::find_sorted_iterator
504  (size_type i, const_sorted_iterator &it) const {
505  const T *pelt = &((*this)[i]);
506  it.root();
507  while (it.index() != ST_NIL) {
508  int cp = compar(*pelt, (*this)[it.index()]);
509  if (cp == 0) { if (it.index() == i) break; else it.down_left(); }
510  else if (cp < 0) it.down_left(); else it.down_right();
511  }
512  if (it.index() == ST_NIL) it.up();
513  while (it.index() != i && it.index() != ST_NIL) ++it;
514  /* peut etre il faudrait controler dans la boucle le depacement */
515  /* pour eviter de faire tout le tableau en cas de faux indice. */
516  }
517 
518  template<typename T, typename COMP, unsigned char pks>
519  void dynamic_tree_sorted<T, COMP, pks>::insert_path
520  (const T &elt, const_sorted_iterator &it) const {
521  it.root();
522  while (it.index() != ST_NIL) {
523  int cp = compar(elt, (*this)[it.index()]);
524  if (cp <= 0) it.down_left(); else it.down_right();
525  }
526  }
527 
528  template<typename T, typename COMP, unsigned char pks>
529  typename dynamic_tree_sorted<T, COMP, pks>::size_type
530  dynamic_tree_sorted<T, COMP, pks>::search_ge(const T &elt) const {
531  const_sorted_iterator it(*this); insert_path(elt, it);
532  short_type dir = it.direction();
533  if (it.index() == ST_NIL)
534  { it.up(); if (it.index() != ST_NIL && dir == +1) ++it; }
535  return it.index();
536  }
537 
538 // template<typename T, typename COMP, unsigned char pks>
539 // typename dynamic_tree_sorted<T, COMP, pks>::sorted_iterator
540 // dynamic_tree_sorted<T, COMP, pks>::sorted_ge(const T &elt)
541 // {
542 // sorted_iterator it(*this); insert_path(elt, it);
543 // short_type dir = it.direction();
544 // it.up(); if (it.index() != ST_NIL && dir == +1) ++it;
545 // return it;
546 // }
547 
548  template<typename T, typename COMP, unsigned char pks>
549  typename dynamic_tree_sorted<T, COMP, pks>::const_sorted_iterator
550  dynamic_tree_sorted<T, COMP, pks>::sorted_ge(const T &elt) const {
551  const_sorted_iterator it(*this); insert_path(elt, it);
552  short_type dir = it.direction();
553  it.up();
554  if (it.index() != ST_NIL && dir == +1) ++it;
555  return it;
556  }
557 
558 
559  template<typename T, typename COMP, unsigned char pks>
560  typename dynamic_tree_sorted<T, COMP, pks>::size_type
561  dynamic_tree_sorted<T, COMP, pks>::memsize(void) const {
562  return dynamic_tas<T, pks>::memsize() + nodes.memsize()
563  + sizeof(dynamic_tree_sorted<T, COMP, pks>);
564  }
565 
566  template<typename T, typename COMP, unsigned char pks>
567  void dynamic_tree_sorted<T, COMP, pks>::compact(void) {
568  if (!this->empty())
569  while (this->ind.last_true() >= this->ind.card())
570  swap(this->ind.first_false(), this->ind.last_true());
571  }
572 
573  template<typename T, typename COMP, unsigned char pks>
574  void dynamic_tree_sorted<T, COMP, pks>::add_index
575  (size_type i, const_sorted_iterator &it) {
576  nodes[i].init();
577  if (first_node == ST_NIL)
578  first_node = i;
579  else {
580  short_type dir = it.direction();
581  it.up();
582  if (dir == -1) nodes[it.index()].l = i; else nodes[it.index()].r = i;
583 
584  while(it.index() != ST_NIL) {
585  short_type *peq = &(nodes[it.index()].eq);
586  if (*peq == 0) *peq = short_type(*peq + dir);
587  else {
588  *peq = short_type(*peq + dir);
589  size_type f = balance_again(it.index());
590  dir = it.direction();
591  it.up();
592  switch (dir) {
593  case 0 : first_node = f; break;
594  case -1 : nodes[it.index()].l = f; break;
595  case +1 : nodes[it.index()].r = f; break;
596  }
597  break;
598  }
599  dir = it.direction();
600  it.up();
601  }
602  }
603  }
604 
605  template<typename T, typename COMP, unsigned char pks>
606  typename dynamic_tree_sorted<T, COMP, pks>::size_type
607  dynamic_tree_sorted<T, COMP, pks>::add(const T &f) {
608  const_sorted_iterator it(*this); insert_path(f, it);
609  size_type num = dynamic_tas<T,pks>::add(f);
610  add_index(num, it);
611  return num;
612  }
613 
614  template<typename T, typename COMP, unsigned char pks> void
615  dynamic_tree_sorted<T, COMP, pks>::add_to_index(size_type i,const T &f) {
616  if (!(this->index_valid(i) && compar(f, (*this)[i]) == 0)) {
617  if (this->index_valid(i)) sup(i);
618  dynamic_tas<T,pks>::add_to_index(i, f);
619  const_sorted_iterator it(*this); insert_path(f, it);
620  add_index(i, it);
621  }
622  }
623 
624  template<typename T, typename COMP, unsigned char pks>
625  typename dynamic_tree_sorted<T, COMP, pks>::size_type
626  dynamic_tree_sorted<T, COMP, pks>::add_norepeat
627  (const T &f, bool replace, bool *present) {
628  const_sorted_iterator it(*this); search_sorted_iterator(f, it);
629  size_type num = it.index();
630  if (num == ST_NIL) {
631  if (present != NULL) *present = false;
632  num = dynamic_tas<T,pks>::add(f); add_index(num, it);
633  }
634  else {
635  if (present != NULL) *present = true;
636  if (replace) (*this)[num] = f;
637  }
638  return num;
639  }
640 
641  template<typename T, typename COMP, unsigned char pks>
642  void dynamic_tree_sorted<T, COMP, pks>::resort(void) {
643  const_tas_iterator itb
644  = ((const dynamic_tree_sorted<T, COMP, pks> *)(this))->tas_begin();
645  const_tas_iterator ite
646  = ((const dynamic_tree_sorted<T, COMP, pks> *)(this))->tas_end();
647  const_sorted_iterator it(*this);
648  first_node = ST_NIL;
649  while (itb != ite)
650  { insert_path(*itb, it); add_index(itb.index(), it); ++itb; }
651  }
652 
653  template<typename T, typename COMP, unsigned char pks>
654  void dynamic_tree_sorted<T, COMP, pks>::sup_index
655  (size_type i, const_sorted_iterator &it) {
656  size_type f, ni = i, ic;
657  short_type dir;
658  tree_elt *pni = &(nodes[i]), *pnc = 0;
659 
660  if (pni->l == ST_NIL || pni->r == ST_NIL) {
661  f = (pni->l != ST_NIL) ? pni->l : pni->r;
662  dir = it.direction(); it.up(); ic = it.index();
663  if (ic != ST_NIL) pnc = &(nodes[ic]);
664  switch (dir) {
665  case 0 : first_node = f; break;
666  case -1 : pnc->l = f; break;
667  case +1 : pnc->r = f; break;
668  }
669  }
670  else {
671  f = it.father();
672  dir = it.direction();
673  it--; ni = it.index();
674  switch (dir) {
675  case 0 : first_node = ni; break;
676  case -1 : nodes[f].l = ni; break;
677  case +1 : nodes[f].r = ni; break;
678  }
679  pnc = &(nodes[ni]); f = pnc->l; *pnc = *pni;
680  dir = it.direction();
681  it.up(); ic = it.index(); if (ic == i) ic = ni; pnc = &(nodes[ic]);
682  if (dir == -1) pnc->l = f; else pnc->r = f;
683  }
684 
685  while (it.index() != ST_NIL) {
686  short_type ub = pnc->eq;
687  pnc->eq = short_type(pnc->eq - dir);
688  if (ub == 0) break;
689  f = balance_again(ic);
690  ub = nodes[f].eq;
691  dir = it.direction();
692  it.up(); ic = it.index(); if (ic == i) ic = ni;
693  if (ic != ST_NIL) pnc = &(nodes[ic]);
694  switch (dir) {
695  case 0 : first_node = f; break;
696  case -1 : pnc->l = f; break;
697  case +1 : pnc->r = f; break;
698  }
699  if (ub != 0) break;
700  }
701  }
702 
703  template<typename T, typename COMP, unsigned char pks>
704  void dynamic_tree_sorted<T, COMP, pks>::sup(size_type i) {
705  GMM_ASSERT2(i < INT_MAX, "out of range");
706  const_sorted_iterator it(*this); find_sorted_iterator(i, it);
707  if (it.index() != ST_NIL)
708  { sup_index(i, it); dynamic_tas<T, pks>::sup(i); }
709  }
710 
711  template<typename T, typename COMP, unsigned char pks>
712  void dynamic_tree_sorted<T, COMP, pks>::swap(size_type i, size_type j) {
713  GMM_ASSERT2(i < INT_MAX && j < INT_MAX, "out of range");
714 
715  if (i != j) {
716  const_sorted_iterator it1(*this), it2(*this); it1.end(); it2.end();
717 
718  if (this->index_valid(i)) find_sorted_iterator(i, it1);
719  if (this->index_valid(j)) find_sorted_iterator(j, it2);
720 
721  short_type dir1 = it1.direction(), dir2 = it2.direction();
722  it1.up(); it2.up();
723  size_type f1 = it1.index(), f2 = it2.index();
724 
725  if (f1!=ST_NIL) { if (dir1==-1) nodes[f1].l = j; else nodes[f1].r = j; }
726  if (f2!=ST_NIL) { if (dir2==-1) nodes[f2].l = i; else nodes[f2].r = i; }
727  if (first_node==i) first_node=j; else if (first_node==j) first_node=i;
728 
729  std::swap(nodes[i], nodes[j]);
730  dynamic_tas<T,pks>::swap(i,j);
731  }
732  }
733 
734  /* ********************************************************************* */
735  /* Definitition d'un dynamic_tree_sorted utilise comme index sur tableau.*/
736  /* ********************************************************************* */
737  /* pas completement satisfaisant. A utiliser avec precautions. */
738 
739  template<typename T, typename TAB, typename COMP> struct less_index{
740  const TAB *tab;
741  COMP compare;
742  mutable const T *search_elt;
743 
744  int operator()(size_t i, size_t j) const {
745  return compare( (i == ST_NIL) ? *search_elt : (*tab)[i],
746  (j == ST_NIL) ? *search_elt : (*tab)[j] );
747  }
748 
749  less_index(const TAB &t, const COMP &c)
750  { compare = c; tab = &t; }
751  less_index(void) {}
752 
753  };
754 
755 
756  template<typename T, typename TAB, typename COMP = gmm::less<T>, unsigned char pks = 5>
757  class dynamic_tree_sorted_index : public
758  dynamic_tree_sorted<size_t, less_index<T,TAB,COMP>, pks> {
759  public :
760 
761  typedef typename
762  dynamic_tree_sorted<size_t, less_index<T,TAB,COMP>, pks>::size_type
763  size_type;
764 
765  protected :
766 
767  typedef dynamic_tree_sorted<size_t, less_index<T,TAB,COMP>, pks> dts_type;
768 
769  public :
770 
771  dynamic_tree_sorted_index(TAB &t, COMP cp = COMP())
772  : dts_type(less_index<T,TAB,COMP>(t, cp)) { }
773 
774  void change_tab(TAB &t, COMP cp = COMP())
775  { this->comparator() = less_index<T,TAB,COMP>(t, cp); }
776 
777  size_type search(const T &elt) const {
778  this->compar.search_elt = &elt;
779  return dts_type::search(ST_NIL);
780  }
781  size_type search_ge(const T &elt) const {
782  this->compar.search_elt = &elt;
783  return dts_type::search_ge(ST_NIL);
784  }
785  size_type add(size_type i) {
786  typename dts_type::const_sorted_iterator it(*this); (*this)[i] = i;
787  this->ind[i] = true; insert_path(i, it); add_index(i, it); return i;
788  }
789 
790  };
791 
792 }
793 
794 #endif /* DAL_TREE_SORTED_H__ */
dal::dynamic_array::begin
iterator begin(void)
Iterator on the first element.
Definition: dal_basic.h:231
dal::dynamic_array::end
iterator end(void)
Iterator on the last + 1 element.
Definition: dal_basic.h:235
dal_tas.h
Heap implementation.
gmm::copy
void copy(const L1 &l1, L2 &l2)
*‍/
Definition: gmm_blas.h:978
gmm::clear
void clear(L &l)
clear (fill with zeros) a vector or matrix.
Definition: gmm_blas.h:59
gmm::add
void add(const L1 &l1, L2 &l2)
*‍/
Definition: gmm_blas.h:1277
bgeot::short_type
gmm::uint16_type short_type
used as the common short type integer in the library
Definition: bgeot_config.h:73
bgeot::operator<<
std::ostream & operator<<(std::ostream &o, const convex_structure &cv)
Print the details of the convex structure cvs to the output stream o.
Definition: bgeot_convex_structure.cc:71
bgeot::size_type
size_t size_type
used as the common size type in the library
Definition: bgeot_poly.h:49
dal
Dynamic Array Library.
Definition: dal_backtrace.cc:29