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textiter: remove recursivity of find_by_log_attrs()

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find_by_log_attrs() was a recursive function. It is replaced by an
iteration.

The already_moved_initially parameter was TRUE only for the recursive
call, so the paramater is removed.

There is also a small cleanup of the find_visible_by_log_attrs()
(remove trailing spaces, fix indentation).

There is still a part to optimize for a later commit.

https://bugzilla.gnome.org/show_bug.cgi?id=629129
This commit is contained in:
Sébastien Wilmet
2014-04-10 23:53:41 +02:00
parent 97b9d8e4ae
commit 7f6ae622d3
1 changed files with 48 additions and 49 deletions
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97
gtk/gtktextiter.c
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@ -3096,82 +3096,81 @@ find_line_log_attrs (const GtkTextIter *iter,
return result;
}
/* FIXME this function is very, very gratuitously slow */
static gboolean
find_by_log_attrs (GtkTextIter *iter,
FindLogAttrFunc func,
gboolean forward,
gboolean already_moved_initially)
find_by_log_attrs (GtkTextIter *iter,
FindLogAttrFunc func,
gboolean forward)
{
GtkTextIter orig;
gint offset = 0;
gboolean found = FALSE;
gboolean already_moved_initially = FALSE;
g_return_val_if_fail (iter != NULL, FALSE);
orig = *iter;
found = find_line_log_attrs (iter, func, &offset, already_moved_initially);
if (!found)
while (TRUE)
{
gint offset = 0;
gboolean found;
found = find_line_log_attrs (iter, func, &offset, already_moved_initially);
if (found)
{
gtk_text_iter_set_line_offset (iter, offset);
return !gtk_text_iter_equal (iter, &orig) && !gtk_text_iter_is_end (iter);
}
if (forward)
{
if (gtk_text_iter_forward_line (iter))
return find_by_log_attrs (iter, func, forward,
TRUE);
else
if (!gtk_text_iter_forward_line (iter))
return FALSE;
already_moved_initially = TRUE;
}
else
{
{
/* TODO optimize this part */
/* go to end of previous line. need to check that
* line is > 0 because backward_line snaps to start of
* line 0 if it's on line 0
*/
if (gtk_text_iter_get_line (iter) > 0 &&
if (gtk_text_iter_get_line (iter) > 0 &&
gtk_text_iter_backward_line (iter))
{
if (!gtk_text_iter_ends_line (iter))
gtk_text_iter_forward_to_line_end (iter);
return find_by_log_attrs (iter, func, forward,
TRUE);
already_moved_initially = TRUE;
}
else
return FALSE;
{
return FALSE;
}
}
}
else
{
gtk_text_iter_set_line_offset (iter, offset);
return
(already_moved_initially || !gtk_text_iter_equal (iter, &orig)) &&
!gtk_text_iter_is_end (iter);
}
}
static gboolean
find_visible_by_log_attrs (GtkTextIter *iter,
FindLogAttrFunc func,
gboolean forward,
gboolean already_moved_initially)
static gboolean
find_visible_by_log_attrs (GtkTextIter *iter,
FindLogAttrFunc func,
gboolean forward)
{
GtkTextIter pos;
g_return_val_if_fail (iter != NULL, FALSE);
pos = *iter;
while (find_by_log_attrs (&pos, func, forward, already_moved_initially))
while (find_by_log_attrs (&pos, func, forward))
{
if (!_gtk_text_btree_char_is_invisible (&pos))
if (!_gtk_text_btree_char_is_invisible (&pos))
{
*iter = pos;
return TRUE;
}
}
}
return FALSE;
}
@ -3225,7 +3224,7 @@ move_multiple_steps (GtkTextIter *iter,
gboolean
gtk_text_iter_forward_word_end (GtkTextIter *iter)
{
return find_by_log_attrs (iter, find_word_end_func, TRUE, FALSE);
return find_by_log_attrs (iter, find_word_end_func, TRUE);
}
/**
@ -3243,7 +3242,7 @@ gtk_text_iter_forward_word_end (GtkTextIter *iter)
gboolean
gtk_text_iter_backward_word_start (GtkTextIter *iter)
{
return find_by_log_attrs (iter, find_word_start_func, FALSE, FALSE);
return find_by_log_attrs (iter, find_word_start_func, FALSE);
}
/* FIXME a loop around a truly slow function means
@ -3303,7 +3302,7 @@ gtk_text_iter_backward_word_starts (GtkTextIter *iter,
gboolean
gtk_text_iter_forward_visible_word_end (GtkTextIter *iter)
{
return find_visible_by_log_attrs (iter, find_word_end_func, TRUE, FALSE);
return find_visible_by_log_attrs (iter, find_word_end_func, TRUE);
}
/**
@ -3323,7 +3322,7 @@ gtk_text_iter_forward_visible_word_end (GtkTextIter *iter)
gboolean
gtk_text_iter_backward_visible_word_start (GtkTextIter *iter)
{
return find_visible_by_log_attrs (iter, find_word_start_func, FALSE, FALSE);
return find_visible_by_log_attrs (iter, find_word_start_func, FALSE);
}
/**
@ -3487,7 +3486,7 @@ gtk_text_iter_inside_sentence (const GtkTextIter *iter)
gboolean
gtk_text_iter_forward_sentence_end (GtkTextIter *iter)
{
return find_by_log_attrs (iter, find_sentence_end_func, TRUE, FALSE);
return find_by_log_attrs (iter, find_sentence_end_func, TRUE);
}
/**
@ -3505,7 +3504,7 @@ gtk_text_iter_forward_sentence_end (GtkTextIter *iter)
gboolean
gtk_text_iter_backward_sentence_start (GtkTextIter *iter)
{
return find_by_log_attrs (iter, find_sentence_start_func, FALSE, FALSE);
return find_by_log_attrs (iter, find_sentence_start_func, FALSE);
}
/* FIXME a loop around a truly slow function means
@ -3620,7 +3619,7 @@ is_cursor_pos_func (const PangoLogAttr *attrs,
gboolean
gtk_text_iter_forward_cursor_position (GtkTextIter *iter)
{
return find_by_log_attrs (iter, find_forward_cursor_pos_func, TRUE, FALSE);
return find_by_log_attrs (iter, find_forward_cursor_pos_func, TRUE);
}
/**
@ -3634,7 +3633,7 @@ gtk_text_iter_forward_cursor_position (GtkTextIter *iter)
gboolean
gtk_text_iter_backward_cursor_position (GtkTextIter *iter)
{
return find_by_log_attrs (iter, find_backward_cursor_pos_func, FALSE, FALSE);
return find_by_log_attrs (iter, find_backward_cursor_pos_func, FALSE);
}
/**
@ -3689,7 +3688,7 @@ gtk_text_iter_backward_cursor_positions (GtkTextIter *iter,
gboolean
gtk_text_iter_forward_visible_cursor_position (GtkTextIter *iter)
{
return find_visible_by_log_attrs (iter, find_forward_cursor_pos_func, TRUE, FALSE);
return find_visible_by_log_attrs (iter, find_forward_cursor_pos_func, TRUE);
}
/**
@ -3706,7 +3705,7 @@ gtk_text_iter_forward_visible_cursor_position (GtkTextIter *iter)
gboolean
gtk_text_iter_backward_visible_cursor_position (GtkTextIter *iter)
{
return find_visible_by_log_attrs (iter, find_backward_cursor_pos_func, FALSE, FALSE);
return find_visible_by_log_attrs (iter, find_backward_cursor_pos_func, FALSE);
}
/**