/** * Get data value referenced by iterator. */ void _rb_tree_iterator_get_value(_rb_tree_iterator_t it_iter, void* pv_value) { assert(pv_value != NULL); assert(_rb_tree_iterator_belong_to_rb_tree(_RB_TREE_ITERATOR_TREE(it_iter), it_iter)); assert(!_rb_tree_iterator_equal(it_iter, _rb_tree_end(_RB_TREE_ITERATOR_TREE(it_iter)))); /* char* */ if (strncmp(_GET_RB_TREE_TYPE_BASENAME(_RB_TREE_ITERATOR_TREE(it_iter)), _C_STRING_TYPE, _TYPE_NAME_SIZE) == 0) { *(char**)pv_value = (char*)string_c_str((string_t*)((_rbnode_t*)_RB_TREE_ITERATOR_COREPOS(it_iter))->_pby_data); } else { bool_t b_result = _GET_RB_TREE_TYPE_SIZE(_RB_TREE_ITERATOR_TREE(it_iter)); _GET_RB_TREE_TYPE_COPY_FUNCTION(_RB_TREE_ITERATOR_TREE(it_iter))( pv_value, ((_rbnode_t*)_RB_TREE_ITERATOR_COREPOS(it_iter))->_pby_data, &b_result); assert(b_result); } }
/** * Insert the value into subtree. */ _rbnode_t* _rb_tree_insert_rbnode(_rb_tree_t* pt_rb_tree, const void* cpv_value) { _rbnode_t* pt_parent = NULL; _rbnode_t* pt_cur = NULL; bool_t b_result = false; bool_t b_less = false; assert(pt_rb_tree != NULL); assert(cpv_value != NULL); assert(_rb_tree_is_inited(pt_rb_tree)); /* if the rb tree is empty */ if(_rb_tree_empty(pt_rb_tree)) { /* allocat a new root */ pt_cur = _alloc_allocate( (_alloc_t*)&pt_rb_tree->_t_allocator, _RB_TREE_NODE_SIZE(_GET_RB_TREE_TYPE_SIZE(pt_rb_tree)), 1); assert(pt_cur != NULL); _rb_tree_init_elem_auxiliary(pt_rb_tree, pt_cur); /* set its color is BLACK */ pt_cur->_pt_left = pt_cur->_pt_right = NULL; pt_cur->_t_color = BLACK; pt_cur->_pt_parent = (_rbnode_t*)&pt_rb_tree->_t_rbroot; b_result = _GET_RB_TREE_TYPE_SIZE(pt_rb_tree); _GET_RB_TREE_TYPE_COPY_FUNCTION(pt_rb_tree)(pt_cur->_pby_data, cpv_value, &b_result); assert(b_result); /* insert the node */ pt_rb_tree->_t_rbroot._pt_parent = pt_cur; } else { pt_parent = pt_rb_tree->_t_rbroot._pt_parent; b_less = _GET_RB_TREE_TYPE_SIZE(pt_rb_tree); _rb_tree_elem_compare_auxiliary(pt_rb_tree, cpv_value, pt_parent->_pby_data, &b_less); if(b_less) { pt_cur = pt_parent->_pt_left; } else { pt_cur = pt_parent->_pt_right; } /* from the root to insert position */ while(pt_cur != NULL) { /* next current position */ pt_parent = pt_cur; b_less = _GET_RB_TREE_TYPE_SIZE(pt_rb_tree); _rb_tree_elem_compare_auxiliary(pt_rb_tree, cpv_value, pt_parent->_pby_data, &b_less); if(b_less) { pt_cur = pt_parent->_pt_left; } else { pt_cur = pt_parent->_pt_right; } } /* allocate new node */ pt_cur = _alloc_allocate( (_alloc_t*)&pt_rb_tree->_t_allocator, _RB_TREE_NODE_SIZE(_GET_RB_TREE_TYPE_SIZE(pt_rb_tree)), 1); assert(pt_cur != NULL); _rb_tree_init_elem_auxiliary(pt_rb_tree, pt_cur); pt_cur->_pt_left = pt_cur->_pt_right = NULL; pt_cur->_t_color = RED; pt_cur->_pt_parent = pt_parent; b_result = _GET_RB_TREE_TYPE_SIZE(pt_rb_tree); _GET_RB_TREE_TYPE_COPY_FUNCTION(pt_rb_tree)(pt_cur->_pby_data, cpv_value, &b_result); assert(b_result); if(b_less) { assert(pt_parent->_pt_left == NULL); pt_parent->_pt_left = pt_cur; } else { assert(pt_parent->_pt_right == NULL); pt_parent->_pt_right = pt_cur; } if(_rb_tree_get_color(pt_parent) == RED) { _rb_tree_rebalance(pt_rb_tree, pt_cur); } } return pt_cur; }