674 lines
16 KiB
C
674 lines
16 KiB
C
/**
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* Copyright (c) 2019 Leonardo Vencovsky
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*
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* This file is part of the C Macro Collections Library.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/**
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* INIT
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*
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* The part 'INIT' gives a new way of initializing a collection. The collection
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* struct is not heap allocated, only its internal structure (nodes, buffers).
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*/
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#ifdef CMC_EXT_INIT
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#endif /* CMC_EXT_INIT */
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/**
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* ITER
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*
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* Treeset bi-directional iterator.
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*/
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#ifdef CMC_EXT_ITER
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struct CMC_DEF_ITER(SNAME) CMC_(PFX, _iter_start)(struct SNAME *target)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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struct CMC_DEF_ITER(SNAME) iter;
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iter.target = target;
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iter.cursor = target->root;
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iter.first = NULL;
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iter.last = NULL;
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iter.index = 0;
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iter.start = true;
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iter.end = CMC_(PFX, _empty)(target);
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if (!CMC_(PFX, _empty)(target))
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{
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while (iter.cursor->left != NULL)
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iter.cursor = iter.cursor->left;
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iter.first = iter.cursor;
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iter.last = target->root;
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while (iter.last->right != NULL)
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iter.last = iter.last->right;
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}
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return iter;
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}
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struct CMC_DEF_ITER(SNAME) CMC_(PFX, _iter_end)(struct SNAME *target)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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struct CMC_DEF_ITER(SNAME) iter;
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iter.target = target;
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iter.cursor = target->root;
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iter.first = NULL;
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iter.last = NULL;
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iter.index = 0;
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iter.start = CMC_(PFX, _empty)(target);
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iter.end = true;
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if (!CMC_(PFX, _empty)(target))
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{
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while (iter.cursor->right != NULL)
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iter.cursor = iter.cursor->right;
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iter.last = iter.cursor;
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iter.first = target->root;
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while (iter.first->left != NULL)
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iter.first = iter.first->left;
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iter.index = target->count - 1;
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}
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return iter;
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}
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bool CMC_(PFX, _iter_at_start)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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return CMC_(PFX, _empty)(iter->target) || iter->start;
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}
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bool CMC_(PFX, _iter_at_end)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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return CMC_(PFX, _empty)(iter->target) || iter->end;
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}
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bool CMC_(PFX, _iter_to_start)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (!CMC_(PFX, _empty)(iter->target))
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{
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iter->index = 0;
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iter->start = true;
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iter->end = CMC_(PFX, _empty)(iter->target);
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iter->cursor = iter->first;
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return true;
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}
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return false;
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}
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bool CMC_(PFX, _iter_to_end)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (!CMC_(PFX, _empty)(iter->target))
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{
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iter->index = iter->target->count - 1;
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iter->start = CMC_(PFX, _empty)(iter->target);
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iter->end = true;
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iter->cursor = iter->last;
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return true;
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}
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return false;
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}
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bool CMC_(PFX, _iter_next)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (iter->end)
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return false;
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if (iter->cursor == iter->last)
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{
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iter->end = true;
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return false;
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}
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iter->start = CMC_(PFX, _empty)(iter->target);
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if (iter->cursor->right != NULL)
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{
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iter->cursor = iter->cursor->right;
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while (iter->cursor->left != NULL)
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iter->cursor = iter->cursor->left;
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iter->index++;
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return true;
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}
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while (true)
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{
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if (iter->cursor->parent->left == iter->cursor)
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{
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iter->cursor = iter->cursor->parent;
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iter->index++;
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return true;
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}
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iter->cursor = iter->cursor->parent;
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}
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}
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bool CMC_(PFX, _iter_prev)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (iter->start)
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return false;
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if (iter->cursor == iter->first)
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{
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iter->start = true;
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return false;
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}
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iter->end = CMC_(PFX, _empty)(iter->target);
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if (iter->cursor->left != NULL)
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{
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iter->cursor = iter->cursor->left;
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while (iter->cursor->right != NULL)
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iter->cursor = iter->cursor->right;
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iter->index--;
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return true;
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}
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while (true)
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{
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if (iter->cursor->parent->right == iter->cursor)
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{
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iter->cursor = iter->cursor->parent;
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iter->index--;
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return true;
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}
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iter->cursor = iter->cursor->parent;
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}
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}
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/* Returns true only if the iterator moved */
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bool CMC_(PFX, _iter_advance)(struct CMC_DEF_ITER(SNAME) * iter, size_t steps)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (iter->end)
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return false;
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if (iter->cursor == iter->last)
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{
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iter->end = true;
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return false;
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}
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if (steps == 0 || iter->index + steps >= iter->target->count)
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return false;
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for (size_t i = 0; i < steps; i++)
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CMC_(PFX, _iter_next)(iter);
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return true;
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}
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/* Returns true only if the iterator moved */
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bool CMC_(PFX, _iter_rewind)(struct CMC_DEF_ITER(SNAME) * iter, size_t steps)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (iter->start)
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return false;
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if (iter->cursor == iter->first)
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{
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iter->start = true;
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return false;
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}
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if (steps == 0 || iter->index < steps)
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return false;
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for (size_t i = 0; i < steps; i++)
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CMC_(PFX, _iter_prev)(iter);
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return true;
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}
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/* Returns true only if the iterator was able to be positioned at the */
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/* given index */
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bool CMC_(PFX, _iter_go_to)(struct CMC_DEF_ITER(SNAME) * iter, size_t index)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (index >= iter->target->count)
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return false;
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if (iter->index > index)
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return CMC_(PFX, _iter_rewind)(iter, iter->index - index);
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else if (iter->index < index)
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return CMC_(PFX, _iter_advance)(iter, index - iter->index);
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return true;
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}
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V CMC_(PFX, _iter_value)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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if (CMC_(PFX, _empty)(iter->target))
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return (V){ 0 };
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return iter->cursor->value;
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}
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size_t CMC_(PFX, _iter_index)(struct CMC_DEF_ITER(SNAME) * iter)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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return iter->index;
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}
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#endif /* CMC_EXT_ITER */
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/**
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* SETF
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*
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* Set functions
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*/
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#ifdef CMC_EXT_SETF
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struct SNAME *CMC_(PFX, _union)(struct SNAME *_set1_, struct SNAME *_set2_)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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struct SNAME *_set_r_ = CMC_(PFX, _new_custom)(_set1_->f_val, _set1_->alloc, NULL);
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if (!_set_r_)
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return NULL;
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struct CMC_DEF_ITER(SNAME) iter1 = CMC_(PFX, _iter_start)(_set1_);
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struct CMC_DEF_ITER(SNAME) iter2 = CMC_(PFX, _iter_start)(_set2_);
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for (; !CMC_(PFX, _iter_at_end)(&iter1); CMC_(PFX, _iter_next)(&iter1))
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{
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CMC_(PFX, _insert)(_set_r_, CMC_(PFX, _iter_value)(&iter1));
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}
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for (; !CMC_(PFX, _iter_at_end)(&iter2); CMC_(PFX, _iter_next)(&iter2))
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{
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CMC_(PFX, _insert)(_set_r_, CMC_(PFX, _iter_value)(&iter2));
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}
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CMC_CALLBACKS_ASSIGN(_set_r_, _set1_->callbacks);
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return _set_r_;
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}
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struct SNAME *CMC_(PFX, _intersection)(struct SNAME *_set1_, struct SNAME *_set2_)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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struct SNAME *_set_r_ = CMC_(PFX, _new_custom)(_set1_->f_val, _set1_->alloc, NULL);
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if (!_set_r_)
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return NULL;
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/** TODO Should this compare count or capacity? */
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struct SNAME *_set_A_ = _set1_->count < _set2_->count ? _set1_ : _set2_;
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struct SNAME *_set_B_ = _set_A_ == _set1_ ? _set2_ : _set1_;
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struct CMC_DEF_ITER(SNAME) iter = CMC_(PFX, _iter_start)(_set_A_);
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for (; !CMC_(PFX, _iter_at_end)(&iter); CMC_(PFX, _iter_next)(&iter))
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{
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V value = CMC_(PFX, _iter_value)(&iter);
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if (CMC_(PFX, _impl_get_node)(_set_B_, value) != NULL)
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CMC_(PFX, _insert)(_set_r_, value);
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}
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CMC_CALLBACKS_ASSIGN(_set_r_, _set1_->callbacks);
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return _set_r_;
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}
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struct SNAME *CMC_(PFX, _difference)(struct SNAME *_set1_, struct SNAME *_set2_)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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struct SNAME *_set_r_ = CMC_(PFX, _new_custom)(_set1_->f_val, _set1_->alloc, NULL);
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if (!_set_r_)
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return NULL;
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struct CMC_DEF_ITER(SNAME) iter = CMC_(PFX, _iter_start)(_set1_);
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for (; !CMC_(PFX, _iter_at_end)(&iter); CMC_(PFX, _iter_next)(&iter))
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{
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V value = CMC_(PFX, _iter_value)(&iter);
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if (CMC_(PFX, _impl_get_node)(_set2_, value) == NULL)
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CMC_(PFX, _insert)(_set_r_, value);
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}
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CMC_CALLBACKS_ASSIGN(_set_r_, _set1_->callbacks);
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return _set_r_;
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}
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struct SNAME *CMC_(PFX, _symmetric_difference)(struct SNAME *_set1_, struct SNAME *_set2_)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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struct SNAME *_set_r_ = CMC_(PFX, _new_custom)(_set1_->f_val, _set1_->alloc, NULL);
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if (!_set_r_)
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return NULL;
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struct CMC_DEF_ITER(SNAME) iter1 = CMC_(PFX, _iter_start)(_set1_);
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struct CMC_DEF_ITER(SNAME) iter2 = CMC_(PFX, _iter_start)(_set2_);
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for (; !CMC_(PFX, _iter_at_end)(&iter1); CMC_(PFX, _iter_next)(&iter1))
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{
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V value = CMC_(PFX, _iter_value)(&iter1);
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if (CMC_(PFX, _impl_get_node)(_set2_, value) == NULL)
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CMC_(PFX, _insert)(_set_r_, value);
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}
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for (; !CMC_(PFX, _iter_at_end)(&iter2); CMC_(PFX, _iter_next)(&iter2))
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{
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V value = CMC_(PFX, _iter_value)(&iter2);
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if (CMC_(PFX, _impl_get_node)(_set1_, value) == NULL)
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CMC_(PFX, _insert)(_set_r_, value);
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}
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CMC_CALLBACKS_ASSIGN(_set_r_, _set1_->callbacks);
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return _set_r_;
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}
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/* Is _set1_ a subset of _set2_ ? */
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/* A set X is a subset of a set Y when: X <= Y */
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/* If X is a subset of Y, then Y is a superset of X */
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bool CMC_(PFX, _is_subset)(struct SNAME *_set1_, struct SNAME *_set2_)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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/* If the cardinality of _set1_ is greater than that of _set2_ */
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/* then it is safe to say that _set1_ can't be a subset of _set2_ */
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if (_set1_->count > _set2_->count)
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return false;
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/* The empty set is a subset of all sets */
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if (CMC_(PFX, _empty)(_set1_))
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return true;
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struct CMC_DEF_ITER(SNAME) iter = CMC_(PFX, _iter_start)(_set1_);
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for (; !CMC_(PFX, _iter_at_end)(&iter); CMC_(PFX, _iter_next)(&iter))
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{
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V value = CMC_(PFX, _iter_value)(&iter);
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if (CMC_(PFX, _impl_get_node)(_set2_, value) == NULL)
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return false;
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}
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return true;
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}
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/* Is _set1_ a superset of _set2_ ? */
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/* A set X is a superset of a set Y when: X >= Y */
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/* If X is a superset of Y, then Y is a subset of X */
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bool CMC_(PFX, _is_superset)(struct SNAME *_set1_, struct SNAME *_set2_)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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return CMC_(PFX, _is_subset)(_set2_, _set1_);
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}
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/* Is _set1_ a proper subset of _set2_ ? */
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/* A set X is a proper subset of a set Y when: X < Y */
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/* If X is a proper subset of Y, then Y is a proper superset of X */
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bool CMC_(PFX, _is_proper_subset)(struct SNAME *_set1_, struct SNAME *_set2_)
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{
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#ifdef CMC_DEV
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CMC_DEV_FCALL;
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#endif
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/* If the cardinality of _set1_ is greater than or equal to that */
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/* of _set2_, then it is safe to say that _set1_ can't be a proper */
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/* subset of _set2_ */
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if (_set1_->count >= _set2_->count)
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return false;
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if (CMC_(PFX, _empty)(_set1_))
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{
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/* The empty set is a proper subset of all non-empty sets */
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if (!CMC_(PFX, _empty)(_set2_))
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return true;
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/* The empty set is not a proper subset of itself (this is true */
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/* for any set) */
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else
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return false;
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}
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struct CMC_DEF_ITER(SNAME) iter = CMC_(PFX, _iter_start)(_set1_);
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for (; !CMC_(PFX, _iter_at_end)(&iter); CMC_(PFX, _iter_next)(&iter))
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{
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V value = CMC_(PFX, _iter_value)(&iter);
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if (CMC_(PFX, _impl_get_node)(_set2_, value) == NULL)
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return false;
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}
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return true;
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}
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/* Is _set1_ a proper superset of _set2_ ? */
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/* A set X is a proper superset of a set Y when: X > Y */
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/* If X is a proper superset of Y, then Y is a proper subset of X */
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bool CMC_(PFX, _is_proper_superset)(struct SNAME *_set1_, struct SNAME *_set2_)
|
|
{
|
|
#ifdef CMC_DEV
|
|
CMC_DEV_FCALL;
|
|
#endif
|
|
|
|
return CMC_(PFX, _is_proper_subset)(_set2_, _set1_);
|
|
}
|
|
|
|
/* Is _set1_ a disjointset of _set2_ ? */
|
|
/* A set X is a disjointset of a set Y if their intersection is empty, */
|
|
/* that is, if there are no elements in common between the two */
|
|
bool CMC_(PFX, _is_disjointset)(struct SNAME *_set1_, struct SNAME *_set2_)
|
|
{
|
|
#ifdef CMC_DEV
|
|
CMC_DEV_FCALL;
|
|
#endif
|
|
|
|
/* The intersection of an empty set with any other set will result */
|
|
/* in an empty set */
|
|
if (CMC_(PFX, _empty)(_set1_))
|
|
return true;
|
|
|
|
struct CMC_DEF_ITER(SNAME) iter = CMC_(PFX, _iter_start)(_set1_);
|
|
|
|
for (; !CMC_(PFX, _iter_at_end)(&iter); CMC_(PFX, _iter_next)(&iter))
|
|
{
|
|
V value = CMC_(PFX, _iter_value)(&iter);
|
|
|
|
if (CMC_(PFX, _impl_get_node)(_set2_, value) != NULL)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#endif /* CMC_EXT_SETF */
|
|
|
|
/**
|
|
* STR
|
|
*
|
|
* Print helper functions.
|
|
*/
|
|
#ifdef CMC_EXT_STR
|
|
|
|
bool CMC_(PFX, _to_string)(struct SNAME *_set_, FILE *fptr)
|
|
{
|
|
#ifdef CMC_DEV
|
|
CMC_DEV_FCALL;
|
|
#endif
|
|
|
|
struct SNAME *s_ = _set_;
|
|
|
|
return 0 <= fprintf(fptr,
|
|
"struct %s<%s> "
|
|
"at %p { "
|
|
"root:%p, "
|
|
"count:%" PRIuMAX ", "
|
|
"flag:%d, "
|
|
"f_val:%p, "
|
|
"alloc:%p, "
|
|
"callbacks:%p }",
|
|
CMC_TO_STRING(SNAME), CMC_TO_STRING(V), s_, s_->root, s_->count, s_->flag, s_->f_val, s_->alloc,
|
|
CMC_CALLBACKS_GET(s_));
|
|
}
|
|
|
|
bool CMC_(PFX, _print)(struct SNAME *_set_, FILE *fptr, const char *start, const char *separator, const char *end)
|
|
{
|
|
#ifdef CMC_DEV
|
|
CMC_DEV_FCALL;
|
|
#endif
|
|
|
|
fprintf(fptr, "%s", start);
|
|
|
|
struct CMC_DEF_NODE(SNAME) *root = _set_->root;
|
|
|
|
bool left_done = false;
|
|
|
|
size_t i = 0;
|
|
while (root)
|
|
{
|
|
if (!left_done)
|
|
{
|
|
while (root->left)
|
|
root = root->left;
|
|
}
|
|
|
|
if (!_set_->f_val->str(fptr, root->value))
|
|
return false;
|
|
|
|
if (++i < _set_->count)
|
|
fprintf(fptr, "%s", separator);
|
|
|
|
left_done = true;
|
|
|
|
if (root->right)
|
|
{
|
|
left_done = false;
|
|
root = root->right;
|
|
}
|
|
else if (root->parent)
|
|
{
|
|
while (root->parent && root == root->parent->right)
|
|
root = root->parent;
|
|
|
|
if (!root->parent)
|
|
break;
|
|
|
|
root = root->parent;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
|
|
fprintf(fptr, "%s", end);
|
|
|
|
return true;
|
|
}
|
|
|
|
#endif /* CMC_EXT_STR */
|