#include "config.h"
-#include "glib.h"
+#include "gsequence.h"
+#include "gmem.h"
+#include "gtestutils.h"
/**
* SECTION: sequence
* @title: Sequences
* sort/sort_changed/search_iter() functions call out to the application
* g_sequence_iter_get_sequence() will return the correct sequence.
*/
- GSequence * real_sequence;
+ GSequence * real_sequence;
};
struct _GSequenceNode
{
gint n_nodes;
- GSequenceNode * parent;
+ GSequenceNode * parent;
GSequenceNode * left;
GSequenceNode * right;
gpointer data; /* For the end node, this field points
GSequenceNode *new);
static void node_unlink (GSequenceNode *node);
static void node_join (GSequenceNode *left,
- GSequenceNode *right);
+ GSequenceNode *right);
static void node_insert_sorted (GSequenceNode *node,
GSequenceNode *new,
GSequenceNode *end,
{
const SortInfo *info = data;
gint retval;
-
+
if (node1 == info->end_node)
return 1;
-
+
if (node2 == info->end_node)
return -1;
-
+
retval = info->cmp_func (node1->data, node2->data, info->cmp_data);
-
+
return retval;
}
/**
* g_sequence_new:
* @data_destroy: a #GDestroyNotify function, or %NULL
- *
+ *
* Creates a new GSequence. The @data_destroy function, if non-%NULL will
* be called on all items when the sequence is destroyed and on items that
* are removed from the sequence.
- *
+ *
* Return value: a new #GSequence
- *
+ *
* Since: 2.14
**/
GSequence *
{
GSequence *seq = g_new (GSequence, 1);
seq->data_destroy_notify = data_destroy;
-
+
seq->end_node = node_new (seq);
-
+
seq->access_prohibited = FALSE;
seq->real_sequence = seq;
-
+
return seq;
}
/**
* g_sequence_free:
* @seq: a #GSequence
- *
- * Frees the memory allocated for @seq. If @seq has a data destroy
+ *
+ * Frees the memory allocated for @seq. If @seq has a data destroy
* function associated with it, that function is called on all items in
* @seq.
- *
+ *
* Since: 2.14
**/
void
g_sequence_free (GSequence *seq)
{
g_return_if_fail (seq != NULL);
-
+
check_seq_access (seq);
-
+
node_free (seq->end_node, seq);
-
+
g_free (seq);
}
* @end: a #GSequenceIter
* @func: a #GFunc
* @user_data: user data passed to @func
- *
+ *
* Calls @func for each item in the range (@begin, @end) passing
* @user_data to the function.
- *
+ *
* Since: 2.14
**/
void
{
GSequence *seq;
GSequenceIter *iter;
-
+
g_return_if_fail (func != NULL);
g_return_if_fail (begin != NULL);
g_return_if_fail (end != NULL);
-
+
seq = get_sequence (begin);
-
+
seq->access_prohibited = TRUE;
-
+
iter = begin;
while (iter != end)
{
GSequenceIter *next = node_get_next (iter);
-
+
func (iter->data, user_data);
-
+
iter = next;
}
-
+
seq->access_prohibited = FALSE;
}
* @seq: a #GSequence
* @func: the function to call for each item in @seq
* @user_data: user data passed to @func
- *
+ *
* Calls @func for each item in the sequence passing @user_data
* to the function.
- *
+ *
* Since: 2.14
**/
void
gpointer user_data)
{
GSequenceIter *begin, *end;
-
+
check_seq_access (seq);
-
+
begin = g_sequence_get_begin_iter (seq);
end = g_sequence_get_end_iter (seq);
-
+
g_sequence_foreach_range (begin, end, func, user_data);
}
* g_sequence_range_get_midpoint:
* @begin: a #GSequenceIter
* @end: a #GSequenceIter
- *
+ *
* Finds an iterator somewhere in the range (@begin, @end). This
* iterator will be close to the middle of the range, but is not
* guaranteed to be <emphasis>exactly</emphasis> in the middle.
*
* The @begin and @end iterators must both point to the same sequence and
* @begin must come before or be equal to @end in the sequence.
- *
+ *
* Return value: A #GSequenceIter pointing somewhere in the
* (@begin, @end) range.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
GSequenceIter *end)
{
int begin_pos, end_pos, mid_pos;
-
+
g_return_val_if_fail (begin != NULL, NULL);
g_return_val_if_fail (end != NULL, NULL);
g_return_val_if_fail (get_sequence (begin) == get_sequence (end), NULL);
-
+
begin_pos = node_get_pos (begin);
end_pos = node_get_pos (end);
-
+
g_return_val_if_fail (end_pos >= begin_pos, NULL);
-
+
mid_pos = begin_pos + (end_pos - begin_pos) / 2;
-
+
return node_get_by_pos (begin, mid_pos);
}
* g_sequence_iter_compare:
* @a: a #GSequenceIter
* @b: a #GSequenceIter
- *
+ *
* Returns a negative number if @a comes before @b, 0 if they are equal,
* and a positive number if @a comes after @b.
*
* The @a and @b iterators must point into the same sequence.
- *
+ *
* Return value: A negative number if @a comes before @b, 0 if they are
* equal, and a positive number if @a comes after @b.
- *
+ *
* Since: 2.14
**/
gint
GSequenceIter *b)
{
gint a_pos, b_pos;
-
+
g_return_val_if_fail (a != NULL, 0);
g_return_val_if_fail (b != NULL, 0);
g_return_val_if_fail (get_sequence (a) == get_sequence (b), 0);
-
+
check_iter_access (a);
check_iter_access (b);
-
+
a_pos = node_get_pos (a);
b_pos = node_get_pos (b);
-
+
if (a_pos == b_pos)
return 0;
else if (a_pos > b_pos)
* g_sequence_append:
* @seq: a #GSequencePointer
* @data: the data for the new item
- *
+ *
* Adds a new item to the end of @seq.
- *
+ *
* Return value: an iterator pointing to the new item
- *
+ *
* Since: 2.14
**/
GSequenceIter *
gpointer data)
{
GSequenceNode *node;
-
+
g_return_val_if_fail (seq != NULL, NULL);
-
+
check_seq_access (seq);
-
+
node = node_new (data);
node_insert_before (seq->end_node, node);
-
+
return node;
}
* g_sequence_prepend:
* @seq: a #GSequence
* @data: the data for the new item
- *
+ *
* Adds a new item to the front of @seq
- *
+ *
* Return value: an iterator pointing to the new item
- *
+ *
* Since: 2.14
**/
GSequenceIter *
gpointer data)
{
GSequenceNode *node, *first;
-
+
g_return_val_if_fail (seq != NULL, NULL);
-
+
check_seq_access (seq);
-
+
node = node_new (data);
first = node_get_first (seq->end_node);
-
+
node_insert_before (first, node);
-
+
return node;
}
* g_sequence_insert_before:
* @iter: a #GSequenceIter
* @data: the data for the new item
- *
+ *
* Inserts a new item just before the item pointed to by @iter.
- *
+ *
* Return value: an iterator pointing to the new item
- *
+ *
* Since: 2.14
**/
GSequenceIter *
gpointer data)
{
GSequenceNode *node;
-
+
g_return_val_if_fail (iter != NULL, NULL);
-
+
check_iter_access (iter);
-
+
node = node_new (data);
-
+
node_insert_before (iter, node);
-
+
return node;
}
/**
* g_sequence_remove:
* @iter: a #GSequenceIter
- *
+ *
* Removes the item pointed to by @iter. It is an error to pass the
* end iterator to this function.
*
* If the sequnce has a data destroy function associated with it, this
* function is called on the data for the removed item.
- *
+ *
* Since: 2.14
**/
void
g_sequence_remove (GSequenceIter *iter)
{
GSequence *seq;
-
+
g_return_if_fail (iter != NULL);
g_return_if_fail (!is_end (iter));
-
+
check_iter_access (iter);
-
- seq = get_sequence (iter);
-
+
+ seq = get_sequence (iter);
+
node_unlink (iter);
node_free (iter, seq);
}
* g_sequence_remove_range:
* @begin: a #GSequenceIter
* @end: a #GSequenceIter
- *
+ *
* Removes all items in the (@begin, @end) range.
*
* If the sequence has a data destroy function associated with it, this
* function is called on the data for the removed items.
- *
+ *
* Since: 2.14
**/
void
GSequenceIter *end)
{
g_return_if_fail (get_sequence (begin) == get_sequence (end));
-
+
check_iter_access (begin);
check_iter_access (end);
-
+
g_sequence_move_range (NULL, begin, end);
}
* @dest: a #GSequenceIter
* @begin: a #GSequenceIter
* @end: a #GSequenceIter
- *
+ *
* Inserts the (@begin, @end) range at the destination pointed to by ptr.
* The @begin and @end iters must point into the same sequence. It is
* allowed for @dest to point to a different sequence than the one pointed
* into by @begin and @end.
- *
+ *
* If @dest is NULL, the range indicated by @begin and @end is
* removed from the sequence. If @dest iter points to a place within
* the (@begin, @end) range, the range does not move.
- *
+ *
* Since: 2.14
**/
void
{
GSequence *src_seq;
GSequenceNode *first;
-
+
g_return_if_fail (begin != NULL);
g_return_if_fail (end != NULL);
-
+
check_iter_access (begin);
check_iter_access (end);
if (dest)
check_iter_access (dest);
-
+
src_seq = get_sequence (begin);
-
+
g_return_if_fail (src_seq == get_sequence (end));
-
+
/* Dest points to begin or end? */
if (dest == begin || dest == end)
return;
-
+
/* begin comes after end? */
if (g_sequence_iter_compare (begin, end) >= 0)
return;
-
+
/* dest points somewhere in the (begin, end) range? */
if (dest && get_sequence (dest) == src_seq &&
g_sequence_iter_compare (dest, begin) > 0 &&
{
return;
}
-
+
src_seq = get_sequence (begin);
-
+
first = node_get_first (begin);
-
+
node_cut (begin);
-
+
node_cut (end);
-
+
if (first != begin)
node_join (first, end);
-
+
if (dest)
{
first = node_get_first (dest);
-
+
node_cut (dest);
-
+
node_join (begin, dest);
-
+
if (dest != first)
- node_join (first, begin);
+ node_join (first, begin);
}
else
{
* a negative value if the first comes before the second, and a
* positive value if the second comes before the first.
* @cmp_data: user data passed to @cmp_func
- *
+ *
* Sorts @seq using @cmp_func.
- *
+ *
* Since: 2.14
**/
void
info.cmp_func = cmp_func;
info.cmp_data = cmp_data;
info.end_node = seq->end_node;
-
+
check_seq_access (seq);
-
+
g_sequence_sort_iter (seq, iter_compare, &info);
}
* new position of @data is undefined.
*
* Return value: a #GSequenceIter pointing to the new item.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
g_return_val_if_fail (seq != NULL, NULL);
g_return_val_if_fail (cmp_func != NULL, NULL);
-
+
info.cmp_func = cmp_func;
info.cmp_data = cmp_data;
info.end_node = seq->end_node;
check_seq_access (seq);
-
+
return g_sequence_insert_sorted_iter (seq, data, iter_compare, &info);
}
* function should be called for items in a sequence already sorted according
* to @cmp_func whenever some aspect of an item changes so that @cmp_func
* may return different values for that item.
- *
+ *
* Since: 2.14
**/
void
SortInfo info;
g_return_if_fail (!is_end (iter));
-
+
info.cmp_func = cmp_func;
info.cmp_data = cmp_data;
info.end_node = get_sequence (iter)->end_node;
check_iter_access (iter);
-
+
g_sequence_sort_changed_iter (iter, iter_compare, &info);
}
* item comes before the second, and a positive value if the second
* item comes before the first.
* @cmp_data: user data passed to @cmp_func.
- *
+ *
* Returns an iterator pointing to the position where @data would
* be inserted according to @cmp_func and @cmp_data.
- *
+ *
* Return value: an #GSequenceIter pointing to the position where @data
* would have been inserted according to @cmp_func and @cmp_data.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
SortInfo info;
g_return_val_if_fail (seq != NULL, NULL);
-
+
info.cmp_func = cmp_func;
info.cmp_data = cmp_data;
info.end_node = seq->end_node;
check_seq_access (seq);
-
+
return g_sequence_search_iter (seq, data, iter_compare, &info);
}
*
* Like g_sequence_sort(), but uses a #GSequenceIterCompareFunc instead
* of a GCompareDataFunc as the compare function
- *
+ *
* Since: 2.14
**/
void
{
GSequence *tmp;
GSequenceNode *begin, *end;
-
+
g_return_if_fail (seq != NULL);
g_return_if_fail (cmp_func != NULL);
-
+
check_seq_access (seq);
-
+
begin = g_sequence_get_begin_iter (seq);
end = g_sequence_get_end_iter (seq);
-
+
tmp = g_sequence_new (NULL);
tmp->real_sequence = seq;
-
+
g_sequence_move_range (g_sequence_get_begin_iter (tmp), begin, end);
-
+
seq->access_prohibited = TRUE;
tmp->access_prohibited = TRUE;
-
+
while (g_sequence_get_length (tmp) > 0)
{
GSequenceNode *node = g_sequence_get_begin_iter (tmp);
-
+
node_insert_sorted (seq->end_node, node, seq->end_node,
- cmp_func, cmp_data);
+ cmp_func, cmp_data);
}
-
+
tmp->access_prohibited = FALSE;
seq->access_prohibited = FALSE;
-
+
g_sequence_free (tmp);
}
* Like g_sequence_sort_changed(), but uses
* a #GSequenceIterCompareFunc instead of a #GCompareDataFunc as
* the compare function.
- *
+ *
* Since: 2.14
**/
void
g_return_if_fail (!is_end (iter));
g_return_if_fail (iter_cmp != NULL);
check_iter_access (iter);
-
+
/* If one of the neighbours is equal to iter, then
* don't move it. This ensures that sort_changed() is
* a stable operation.
*/
-
+
next = node_get_next (iter);
prev = node_get_prev (iter);
-
+
if (prev != iter && iter_cmp (prev, iter, cmp_data) == 0)
return;
-
+
if (!is_end (next) && iter_cmp (next, iter, cmp_data) == 0)
return;
-
+
seq = get_sequence (iter);
-
+
seq->access_prohibited = TRUE;
tmp_seq = g_sequence_new (NULL);
tmp_seq->real_sequence = seq;
-
+
node_unlink (iter);
node_insert_before (tmp_seq->end_node, iter);
-
+
node_insert_sorted (seq->end_node, iter, seq->end_node,
iter_cmp, cmp_data);
g_sequence_free (tmp_seq);
-
+
seq->access_prohibited = FALSE;
}
* iterator comes before the second, and a positive value if the second
* iterator comes before the first.
* @cmp_data: user data passed to @cmp_func
- *
+ *
* Like g_sequence_insert_sorted(), but uses
* a #GSequenceIterCompareFunc instead of a #GCompareDataFunc as
* the compare function.
- *
+ *
* Return value: a #GSequenceIter pointing to the new item
- *
+ *
* Since: 2.14
**/
GSequenceIter *
g_sequence_insert_sorted_iter (GSequence *seq,
- gpointer data,
- GSequenceIterCompareFunc iter_cmp,
- gpointer cmp_data)
+ gpointer data,
+ GSequenceIterCompareFunc iter_cmp,
+ gpointer cmp_data)
{
GSequenceNode *new_node;
GSequence *tmp_seq;
g_return_val_if_fail (seq != NULL, NULL);
g_return_val_if_fail (iter_cmp != NULL, NULL);
-
+
check_seq_access (seq);
seq->access_prohibited = TRUE;
-
+
/* Create a new temporary sequence and put the new node into
* that. The reason for this is that the user compare function
- * will be called with the new node, and if it dereferences,
+ * will be called with the new node, and if it dereferences,
* "is_end" will be called on it. But that will crash if the
* node is not actually in a sequence.
*
*/
tmp_seq = g_sequence_new (NULL);
tmp_seq->real_sequence = seq;
-
+
new_node = g_sequence_append (tmp_seq, data);
-
+
node_insert_sorted (seq->end_node, new_node,
seq->end_node, iter_cmp, cmp_data);
-
+
g_sequence_free (tmp_seq);
seq->access_prohibited = FALSE;
-
+
return new_node;
}
* Like g_sequence_search(), but uses
* a #GSequenceIterCompareFunc instead of a #GCompareDataFunc as
* the compare function.
- *
+ *
* Return value: a #GSequenceIter pointing to the position in @seq
* where @data would have been inserted according to @iter_cmp and @cmp_data.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
GSequenceNode *node;
GSequenceNode *dummy;
GSequence *tmp_seq;
-
+
g_return_val_if_fail (seq != NULL, NULL);
-
+
check_seq_access (seq);
-
+
seq->access_prohibited = TRUE;
tmp_seq = g_sequence_new (NULL);
tmp_seq->real_sequence = seq;
-
+
dummy = g_sequence_append (tmp_seq, data);
-
+
node = node_find_closest (seq->end_node, dummy,
seq->end_node, iter_cmp, cmp_data);
g_sequence_free (tmp_seq);
-
+
seq->access_prohibited = FALSE;
-
+
return node;
}
/**
* g_sequence_iter_get_sequence:
* @iter: a #GSequenceIter
- *
+ *
* Returns the #GSequence that @iter points into.
- *
+ *
* Return value: the #GSequence that @iter points into.
- *
+ *
* Since: 2.14
**/
GSequence *
g_sequence_iter_get_sequence (GSequenceIter *iter)
{
GSequence *seq;
-
+
g_return_val_if_fail (iter != NULL, NULL);
seq = get_sequence (iter);
/**
* g_sequence_get:
* @iter: a #GSequenceIter
- *
+ *
* Returns the data that @iter points to.
- *
+ *
* Return value: the data that @iter points to
- *
+ *
* Since: 2.14
**/
gpointer
{
g_return_val_if_fail (iter != NULL, NULL);
g_return_val_if_fail (!is_end (iter), NULL);
-
+
return iter->data;
}
* g_sequence_set:
* @iter: a #GSequenceIter
* @data: new data for the item
- *
+ *
* Changes the data for the item pointed to by @iter to be @data. If
* the sequence has a data destroy function associated with it, that
* function is called on the existing data that @iter pointed to.
- *
+ *
* Since: 2.14
**/
void
gpointer data)
{
GSequence *seq;
-
+
g_return_if_fail (iter != NULL);
g_return_if_fail (!is_end (iter));
-
+
seq = get_sequence (iter);
-
+
/* If @data is identical to iter->data, it is destroyed
* here. This will work right in case of ref-counted objects. Also
* it is similar to what ghashtables do.
* code relying on self-setting not destroying would be
* pretty dubious anyway ...
*/
-
+
if (seq->data_destroy_notify)
seq->data_destroy_notify (iter->data);
-
+
iter->data = data;
}
/**
* g_sequence_get_length:
* @seq: a #GSequence
- *
+ *
* Returns the length of @seq
- *
+ *
* Return value: the length of @seq
- *
+ *
* Since: 2.14
**/
gint
/**
* g_sequence_get_end_iter:
- * @seq: a #GSequence
- *
+ * @seq: a #GSequence
+ *
* Returns the end iterator for @seg
- *
+ *
* Return value: the end iterator for @seq
- *
+ *
* Since: 2.14
**/
GSequenceIter *
g_sequence_get_end_iter (GSequence *seq)
{
g_return_val_if_fail (seq != NULL, NULL);
-
+
return seq->end_node;
}
/**
* g_sequence_get_begin_iter:
* @seq: a #GSequence
- *
+ *
* Returns the begin iterator for @seq.
- *
+ *
* Return value: the begin iterator for @seq.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
int pos)
{
gint len = g_sequence_get_length (seq);
-
+
if (pos > len || pos < 0)
pos = len;
-
+
return pos;
}
* g_sequence_get_iter_at_pos:
* @seq: a #GSequence
* @pos: a position in @seq, or -1 for the end.
- *
+ *
* Returns the iterator at position @pos. If @pos is negative or larger
* than the number of items in @seq, the end iterator is returned.
- *
+ *
* Return value: The #GSequenceIter at position @pos
- *
+ *
* Since: 2.14
**/
GSequenceIter *
gint pos)
{
g_return_val_if_fail (seq != NULL, NULL);
-
+
pos = clamp_position (seq, pos);
-
+
return node_get_by_pos (seq->end_node, pos);
}
* After calling this function @dest will point to the position immediately
* after @src. It is allowed for @src and @dest to point into different
* sequences.
- *
+ *
* Since: 2.14
**/
void
g_return_if_fail (src != NULL);
g_return_if_fail (dest != NULL);
g_return_if_fail (!is_end (src));
-
+
if (src == dest)
return;
-
+
node_unlink (src);
node_insert_before (dest, src);
}
/**
* g_sequence_iter_is_end:
* @iter: a #GSequenceIter
- *
+ *
* Returns whether @iter is the end iterator
- *
+ *
* Return value: Whether @iter is the end iterator.
- *
+ *
* Since: 2.14
**/
gboolean
g_sequence_iter_is_end (GSequenceIter *iter)
{
g_return_val_if_fail (iter != NULL, FALSE);
-
+
return is_end (iter);
}
/**
* g_sequence_iter_is_begin:
* @iter: a #GSequenceIter
- *
+ *
* Returns whether @iter is the begin iterator
- *
+ *
* Return value: whether @iter is the begin iterator
- *
+ *
* Since: 2.14
**/
gboolean
g_sequence_iter_is_begin (GSequenceIter *iter)
{
g_return_val_if_fail (iter != NULL, FALSE);
-
+
return (node_get_prev (iter) == iter);
}
/**
* g_sequence_iter_get_position:
* @iter: a #GSequenceIter
- *
+ *
* Returns the position of @iter
- *
+ *
* Return value: the position of @iter
- *
+ *
* Since: 2.14
**/
gint
g_sequence_iter_get_position (GSequenceIter *iter)
{
g_return_val_if_fail (iter != NULL, -1);
-
+
return node_get_pos (iter);
}
/**
* g_sequence_iter_next:
* @iter: a #GSequenceIter
- *
+ *
* Returns an iterator pointing to the next position after @iter. If
* @iter is the end iterator, the end iterator is returned.
- *
+ *
* Return value: a #GSequenceIter pointing to the next position after @iter.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
g_sequence_iter_next (GSequenceIter *iter)
{
g_return_val_if_fail (iter != NULL, NULL);
-
+
return node_get_next (iter);
}
/**
* g_sequence_iter_prev:
* @iter: a #GSequenceIter
- *
+ *
* Returns an iterator pointing to the previous position before @iter. If
* @iter is the begin iterator, the begin iterator is returned.
- *
+ *
* Return value: a #GSequenceIter pointing to the previous position before
* @iter.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
g_sequence_iter_prev (GSequenceIter *iter)
{
g_return_val_if_fail (iter != NULL, NULL);
-
+
return node_get_prev (iter);
}
* to the end of the sequence, the end iterator is returned.
*
* Return value: a #GSequenceIter which is @delta positions away from @iter.
- *
+ *
* Since: 2.14
**/
GSequenceIter *
gint delta)
{
gint new_pos;
-
+
g_return_val_if_fail (iter != NULL, NULL);
-
+
new_pos = node_get_pos (iter) + delta;
-
+
new_pos = clamp_position (get_sequence (iter), new_pos);
-
+
return node_get_by_pos (iter, new_pos);
}
* g_sequence_swap:
* @a: a #GSequenceIter
* @b: a #GSequenceIter
- *
+ *
* Swaps the items pointed to by @a and @b. It is allowed for @a and @b
* to point into difference sequences.
- *
+ *
* Since: 2.14
**/
void
{
GSequenceNode *leftmost, *rightmost, *rightmost_next;
int a_pos, b_pos;
-
+
g_return_if_fail (!g_sequence_iter_is_end (a));
g_return_if_fail (!g_sequence_iter_is_end (b));
-
+
if (a == b)
return;
-
+
a_pos = g_sequence_iter_get_position (a);
b_pos = g_sequence_iter_get_position (b);
-
+
if (a_pos > b_pos)
{
leftmost = b;
leftmost = a;
rightmost = b;
}
-
+
rightmost_next = node_get_next (rightmost);
-
+
/* The situation is now like this:
*
* ..., leftmost, ......., rightmost, rightmost_next, ...
{
while (node->parent)
node = node->parent;
-
+
return node;
}
node_new (gpointer data)
{
GSequenceNode *node = g_slice_new0 (GSequenceNode);
-
+
node->n_nodes = 1;
node->data = data;
node->left = NULL;
node->right = NULL;
node->parent = NULL;
-
+
return node;
}
node_get_first (GSequenceNode *node)
{
node = find_root (node);
-
+
while (node->left)
node = node->left;
-
+
return node;
}
node_get_last (GSequenceNode *node)
{
node = find_root (node);
-
+
while (node->right)
node = node->right;
-
+
return node;
}
{
n = n->right;
while (n->left)
- n = n->left;
+ n = n->left;
}
else
{
while (NODE_RIGHT_CHILD (n))
- n = n->parent;
-
+ n = n->parent;
+
if (n->parent)
- n = n->parent;
+ n = n->parent;
else
- n = node;
+ n = node;
}
-
+
return n;
}
node_get_prev (GSequenceNode *node)
{
GSequenceNode *n = node;
-
+
if (n->left)
{
n = n->left;
while (n->right)
- n = n->right;
+ n = n->right;
}
else
{
while (NODE_LEFT_CHILD (n))
- n = n->parent;
-
+ n = n->parent;
+
if (n->parent)
- n = n->parent;
+ n = n->parent;
else
- n = node;
+ n = node;
}
-
+
return n;
}
node_get_pos (GSequenceNode *node)
{
int n_smaller = 0;
-
+
if (node->left)
n_smaller = node->left->n_nodes;
-
+
while (node)
{
if (NODE_RIGHT_CHILD (node))
- n_smaller += N_NODES (node->parent->left) + 1;
-
+ n_smaller += N_NODES (node->parent->left) + 1;
+
node = node->parent;
}
-
+
return n_smaller;
}
static GSequenceNode *
node_get_by_pos (GSequenceNode *node,
- gint pos)
+ gint pos)
{
int i;
-
+
node = find_root (node);
-
+
while ((i = N_NODES (node->left)) != pos)
{
if (i < pos)
{
- node = node->right;
- pos -= (i + 1);
+ node = node->right;
+ pos -= (i + 1);
}
else
{
- node = node->left;
- }
+ node = node->left;
+ }
}
-
+
return node;
}
{
GSequenceNode *best;
gint c;
-
+
haystack = find_root (haystack);
-
+
do
{
best = haystack;
-
+
/* iter_cmp can't be passed the end node, since the function may
* be user-supplied
*/
c = 1;
else
c = iter_cmp (haystack, needle, cmp_data);
-
+
/* In the following we don't break even if c == 0. Instaed we go on
* searching along the 'bigger' nodes, so that we find the last one
* that is equal to the needle.
haystack = haystack->right;
}
while (haystack != NULL);
-
+
/* If the best node is smaller or equal to the data, then move one step
* to the right to make sure the best one is strictly bigger than the data
*/
if (best != end && c <= 0)
best = node_get_next (best);
-
+
return best;
}
node_get_length (GSequenceNode *node)
{
node = find_root (node);
-
+
return node->n_nodes;
}
static void
real_node_free (GSequenceNode *node,
- GSequence *seq)
+ GSequence *seq)
{
if (node)
{
real_node_free (node->left, seq);
real_node_free (node->right, seq);
-
+
if (seq && seq->data_destroy_notify && node != seq->end_node)
- seq->data_destroy_notify (node->data);
-
+ seq->data_destroy_notify (node->data);
+
g_slice_free (GSequenceNode, node);
}
}
static void
node_free (GSequenceNode *node,
- GSequence *seq)
+ GSequence *seq)
{
node = find_root (node);
-
+
real_node_free (node, seq);
}
node_update_fields (GSequenceNode *node)
{
int n_nodes = 1;
-
+
n_nodes += N_NODES (node->left);
n_nodes += N_NODES (node->right);
-
+
node->n_nodes = n_nodes;
}
node_rotate (GSequenceNode *node)
{
GSequenceNode *tmp, *old;
-
+
g_assert (node->parent);
g_assert (node->parent != node);
-
+
if (NODE_LEFT_CHILD (node))
{
/* rotate right */
tmp = node->right;
-
+
node->right = node->parent;
node->parent = node->parent->parent;
if (node->parent)
else
node->parent->right = node;
}
-
+
g_assert (node->right);
-
+
node->right->parent = node;
node->right->left = tmp;
-
+
if (node->right->left)
node->right->left->parent = node->right;
-
+
old = node->right;
}
else
node->left = node->parent;
node->parent = node->parent->parent;
if (node->parent)
- {
+ {
if (node->parent->right == node->left)
node->parent->right = node;
else
node->parent->left = node;
}
-
+
g_assert (node->left);
-
+
node->left->parent = node;
node->left->right = tmp;
-
+
if (node->left->right)
node->left->right->parent = node->left;
-
+
old = node->left;
}
-
+
node_update_fields (old);
node_update_fields (node);
}
if (node)
{
node_update_fields (node);
-
+
node_update_fields_deep (node->parent);
}
}
static void
rotate_down (GSequenceNode *node,
- guint priority)
+ guint priority)
{
guint left, right;
-
+
left = node->left ? get_priority (node->left) : 0;
right = node->right ? get_priority (node->right) : 0;
-
+
while (priority < left || priority < right)
{
if (left > right)
- node_rotate (node->left);
+ node_rotate (node->left);
else
- node_rotate (node->right);
-
+ node_rotate (node->right);
+
left = node->left ? get_priority (node->left) : 0;
right = node->right ? get_priority (node->right) : 0;
}
{
while (node->parent)
node_rotate (node);
-
+
if (node->left)
node->left->parent = NULL;
-
+
node->left = NULL;
node_update_fields (node);
-
+
rotate_down (node, get_priority (node));
}
static void
node_join (GSequenceNode *left,
- GSequenceNode *right)
+ GSequenceNode *right)
{
GSequenceNode *fake = node_new (NULL);
-
+
fake->left = find_root (left);
fake->right = find_root (right);
fake->left->parent = fake;
fake->right->parent = fake;
-
+
node_update_fields (fake);
-
+
node_unlink (fake);
-
+
node_free (fake, NULL);
}
static void
node_insert_before (GSequenceNode *node,
- GSequenceNode *new)
+ GSequenceNode *new)
{
new->left = node->left;
if (new->left)
new->left->parent = new;
-
+
new->parent = node;
node->left = new;
-
+
node_update_fields_deep (new);
-
+
while (new->parent && get_priority (new) > get_priority (new->parent))
node_rotate (new);
-
+
rotate_down (new, get_priority (new));
}
node_unlink (GSequenceNode *node)
{
rotate_down (node, 0);
-
+
if (NODE_RIGHT_CHILD (node))
node->parent->right = NULL;
else if (NODE_LEFT_CHILD (node))
node->parent->left = NULL;
-
+
if (node->parent)
node_update_fields_deep (node->parent);
-
+
node->parent = NULL;
}
gpointer cmp_data)
{
GSequenceNode *closest;
-
+
closest = node_find_closest (node, new, end, iter_cmp, cmp_data);
-
+
node_unlink (new);
-
+
node_insert_before (closest, new);
}
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