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tree.h
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tree.h
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#include "ss.h"
#include "vec.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
DEF_VEC(size_t)
#define Tree(type) struct tree_##type##_t
#define DLTree(type) struct dltree_##type##_t
#define TREE_FUNC_NAME(type, children, rest) tree_##type##_##children##rest
#define DL_TREE_FUNC_NAME(type, children, rest) dltree_##type##_##children##rest
#define DEF_DL_TREE(type, nchildren) \
struct dltree_##type##_t { \
type data; \
struct dltree_##type##_t *parent; \
struct dltree_##type##_t *children[nchildren]; \
}; \
\
void DL_TREE_FUNC_NAME(type, nchildren, _print)( \
DLTree(type) * node, void (*print)(DLTree(type) *)) { \
print(node); \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i]) { \
DL_TREE_FUNC_NAME(type, nchildren, _print)(node->children[i], print); \
} \
} \
} \
\
DLTree(type) * \
DL_TREE_FUNC_NAME(type, nchildren, _new_from_data)(type * data) { \
DLTree(type) *node = (DLTree(type) *)calloc(1, sizeof(DLTree(type))); \
node->data = *data; \
return node; \
} \
\
ssize_t DL_TREE_FUNC_NAME(type, nchildren, _nor_num_children)( \
struct dltree_##type##_t * node) { \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i] == NULL) { \
return i; \
} \
} \
return -1; \
} \
size_t DL_TREE_FUNC_NAME(type, nchildren, \
_num_children)(struct dltree_##type##_t * node) { \
size_t n = 0; \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i] != NULL) \
n++; \
} \
return n; \
} \
\
int DL_TREE_FUNC_NAME(type, nchildren, _shift_down_left)( \
struct dltree_##type##_t * current, struct dltree_##type##_t * new) { \
size_t i = 0; \
for (; i < nchildren; ++i) { \
if (new->children[i] == 0) \
break; \
} \
\
if (i == nchildren) { \
return -1; \
} \
if (i != 0) { \
memmove(new->children + sizeof(struct dltree##type##_t *), \
new->children, sizeof(struct dltree##type##_t *) * (i + 1)); \
} \
\
if (current->parent == NULL) { \
new->children[0] = current; \
current->parent = new; \
return 1; \
} \
\
size_t cur_index = 0; \
for (; cur_index < nchildren; cur_index++) { \
if (current->parent->children[cur_index] == current) { \
current->parent->children[cur_index] = new; \
break; \
} \
} \
if (cur_index == nchildren) { \
return -2; \
} \
\
current->parent = new; \
new->children[0] = current; \
return 0; \
} \
\
int DL_TREE_FUNC_NAME(type, nchildren, _shift_down_right)( \
struct dltree_##type##_t * current, struct dltree_##type##_t * new) { \
size_t i = nchildren - 1; \
for (; i >= 0; --i) { \
if (new->children[i] == 0) \
break; \
} \
\
if (i == -1) { \
return -1; \
} \
if (i != nchildren - 1) { \
memmove(new->children + i, new->children + i + 1, \
sizeof(struct dltree##type##_t *) * (nchildren - 1 - i)); \
} \
\
if (current->parent == NULL) { \
new->children[nchildren - 1] = current; \
current->parent = new; \
return 1; \
} \
\
size_t cur_index = 0; \
for (; cur_index < nchildren; cur_index++) { \
if (current->parent->children[cur_index] == current) { \
current->parent->children[cur_index] = new; \
break; \
} \
} \
if (cur_index == nchildren) { \
return -2; \
} \
\
current->parent = new; \
new->children[nchildren - 1] = current; \
return 0; \
} \
\
int DL_TREE_FUNC_NAME(type, nchildren, _add_child)( \
struct dltree_##type##_t * parent, struct dltree_##type##_t * child) { \
for (size_t i = 0; i < nchildren; ++i) { \
if (parent->children[i] == NULL) { \
parent->children[i] = child; \
return 0; \
} \
} \
return -1; \
} \
\
DLTree(type) * DL_TREE_FUNC_NAME(type, nchildren, _walk_up_until)( \
DLTree(type) * node, \
bool (*predicate)(void *, DLTree(type) *), \
void *pred_arg) { \
DLTree(type) *current = node->parent; \
while (current != NULL) { \
if (predicate(pred_arg, current)) { \
return current; \
} \
current = current->parent; \
} \
\
return NULL; \
} \
\
bool has_aditional_children(void *arg, DLTree(type) * node) { \
Vec(size_t) *lch_index = (Vec(size_t) *)arg; \
size_t *last = vec_size_t_last(lch_index); \
\
size_t i = 0; \
for (; i < nchildren; ++i) { \
if (lch_index->data[i]) { \
*vec_size_t_last(lch_index) = i; \
return true; \
} \
} \
lch_index->len--; \
return false; \
} \
// DLTree(type) * DL_TREE_FUNC_NAME(type, nchildren, _dfs)( \
// DLTree(type) * node, bool (*predicate)(DLTree(type) *)) { \
// Vec(size_t) indexes; \
// vec_size_t_init(&indexes); \
// \
// DLTree(type) *current = node; \
// bool current_indexed = false; \
// loop { \
// if (predicate(current)) { \
// return current; \
// } \
// size_t i = 0; \
// for (; i < nchildren; ++i) { \
// if (indexes.data[i]) { \
// if (current_indexed) { \
// *vec_size_t_last(&indexes) = i; \
// } else { \
// vec_size_t_rappend(&indexes, i); \
// } \
// current = indexes.data[i]; \
// current_indexed = false; \
// } \
// } \
// \
// if (i == nchildren) { \
// current = DL_TREE_FUNC_NAME(type, nchildren, _walk_up_until)( \
// current, has_aditional_children, (void *)&indexes); \
// if (current == NULL) { \
// return NULL; \
// } \
// } \
// } \
// \
// vec_size_t_free(&indexes); \
// }
#define DEF_DL_TREE_DROP(type, nchildren, drop_fun) \
int DL_TREE_FUNC_NAME(type, nchildren, _drop_node)(DLTree(type) * node) { \
drop_fun(&node->data); \
free(node); \
return 0; \
} \
\
int DL_TREE_FUNC_NAME(type, nchildren, _drop_tree)(DLTree(type) * node) { \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i]) { \
int e = \
DL_TREE_FUNC_NAME(type, nchildren, _drop_tree)(node->children[i]); \
if (e) { \
return e; \
} \
} \
} \
return DL_TREE_FUNC_NAME(type, nchildren, _drop_node)(node); \
}
#define DEF_TREE(type, nchildren) \
Tree(type) { \
type data; \
Tree(type) * parent; \
Tree(type) * children[nchildren]; \
}; \
\
void TREE_FUNC_NAME(type, nchildren, _print)(Tree(type) * node, \
void (*print)(Tree(type) *)) { \
print(node); \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i]) { \
TREE_FUNC_NAME(type, nchildren, _print)(node->children[i], print); \
} \
} \
} \
\
Tree(type) * TREE_FUNC_NAME(type, nchildren, _new_from_data)(type * data) { \
Tree(type) *node = (Tree(type) *)calloc(1, sizeof(Tree(type))); \
node->data = *data; \
return node; \
} \
\
ssize_t TREE_FUNC_NAME(type, nchildren, \
_nor_num_children)(Tree(type) * node) { \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i] == NULL) { \
return i; \
} \
} \
return -1; \
} \
size_t TREE_FUNC_NAME(type, nchildren, \
_num_children)(Tree(type) _t * node) { \
size_t n = 0; \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i] != NULL) \
n++; \
} \
return n; \
} \
\
int TREE_FUNC_NAME(type, nchildren, _shift_down_left)( \
Tree(type) _t * current, Tree(type) _t * new) { \
size_t i = 0; \
for (; i < nchildren; ++i) { \
if (new->children[i] == 0) \
break; \
} \
\
if (i == nchildren) { \
return -1; \
} \
if (i != 0) { \
memmove(new->children + sizeof(Tree(typet *), \
new->children, sizeof(Tree(typet *) * (i + 1)); \
} \
\
if (current->parent == NULL) { \
new->children[0] = current; \
current->parent = new; \
return 1; \
} \
\
size_t cur_index = 0; \
for (; cur_index < nchildren; cur_index++) { \
if (current->parent->children[cur_index] == current) { \
current->parent->children[cur_index] = new; \
break; \
} \
} \
if (cur_index == nchildren) { \
return -2; \
} \
\
current->parent = new; \
new->children[0] = current; \
return 0; \
} \
\
int TREE_FUNC_NAME(type, nchildren, _shift_down_right)( \
Tree(type) _t * current, Tree(type) _t * new) { \
size_t i = nchildren - 1; \
for (; i >= 0; --i) { \
if (new->children[i] == 0) \
break; \
} \
\
if (i == -1) { \
return -1; \
} \
if (i != nchildren - 1) { \
memmove(new->children + i, new->children + i + 1, \
sizeof(Tree(typet *) * (nchildren - 1 - i)); \
} \
\
if (current->parent == NULL) { \
new->children[nchildren - 1] = current; \
current->parent = new; \
return 1; \
} \
\
size_t cur_index = 0; \
for (; cur_index < nchildren; cur_index++) { \
if (current->parent->children[cur_index] == current) { \
current->parent->children[cur_index] = new; \
break; \
} \
} \
if (cur_index == nchildren) { \
return -2; \
} \
\
current->parent = new; \
new->children[nchildren - 1] = current; \
return 0; \
} \
\
int TREE_FUNC_NAME(type, nchildren, _add_child)(Tree(type) _t * parent, \
Tree(type) _t * child) { \
for (size_t i = 0; i < nchildren; ++i) { \
if (parent->children[i] == NULL) { \
parent->children[i] = child; \
return 0; \
} \
} \
return -1; \
}
// Tree(type) * TREE_FUNC_NAME(type, nchildren, _walk_until)( \
// Tree(type) * node, bool (*predicate)(Tree(type) *)) { \
// Tree(type) *current = node->parent; \
// while (current != NULL) { \
// if (predicate(current)) { \
// return current; \
// } \
// current = current->parent; \
// } \
// \
// return NULL; \
// }
#define DEF_TREE_DROP(type, nchildren, drop_fun) \
int TREE_FUNC_NAME(type, nchildren, _drop_node)(Tree(type) * node) { \
drop_fun(&node->data); \
free(node); \
return 0; \
} \
\
int TREE_FUNC_NAME(type, nchildren, _drop_tree)(Tree(type) * node) { \
for (size_t i = 0; i < nchildren; ++i) { \
if (node->children[i]) { \
int e = \
TREE_FUNC_NAME(type, nchildren, _drop_tree)(node->children[i]); \
if (e) { \
return e; \
} \
} \
} \
return TREE_FUNC_NAME(type, nchildren, _drop_node)(node); \
}