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css: Add accessor functions for traversing css tree

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This will let us later change how the tree is stored
This commit is contained in:
Alexander Larsson 2012-11-29 17:56:00 +01:00
parent 42716cb60f
commit 528e6032ae
1 changed files with 75 additions and 25 deletions
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100
gtk/gtkcssselector.c
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@ -62,7 +62,7 @@ struct _GtkCssSelectorTree
GtkCssSelector selector;
GtkCssSelectorTree *parent;
GtkCssSelectorTree *previous;
GtkCssSelectorTree *siblings;
GtkCssSelectorTree *sibling;
gpointer *matches; /* pointers that we return as matches if selector matches */
};
@ -132,6 +132,24 @@ gtk_css_selector_previous (const GtkCssSelector *selector)
return selector->class ? selector : NULL;
}
static const GtkCssSelectorTree *
gtk_css_selector_tree_get_parent (const GtkCssSelectorTree *tree)
{
return tree->parent;
}
static const GtkCssSelectorTree *
gtk_css_selector_tree_get_previous (const GtkCssSelectorTree *tree)
{
return tree->previous;
}
static const GtkCssSelectorTree *
gtk_css_selector_tree_get_sibling (const GtkCssSelectorTree *tree)
{
return tree->sibling;
}
/* DESCENDANT */
static void
@ -170,7 +188,9 @@ gtk_css_selector_descendant_tree_match (const GtkCssSelectorTree *tree,
{
matcher = &ancestor;
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, matcher, res);
/* any matchers are dangerous here, as we may loop forever, but
@ -235,7 +255,9 @@ gtk_css_selector_child_tree_match (const GtkCssSelectorTree *tree,
if (!_gtk_css_matcher_get_parent (&parent, matcher))
return;
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, &parent, res);
}
@ -300,7 +322,9 @@ gtk_css_selector_sibling_tree_match (const GtkCssSelectorTree *tree,
{
matcher = &previous;
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, matcher, res);
/* any matchers are dangerous here, as we may loop forever, but
@ -368,7 +392,9 @@ gtk_css_selector_adjacent_tree_match (const GtkCssSelectorTree *tree,
matcher = &previous;
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, matcher, res);
}
@ -430,12 +456,16 @@ gtk_css_selector_any_tree_match (const GtkCssSelectorTree *tree,
gtk_css_selector_tree_found_match (tree, res);
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
{
if (prev->selector.class == &GTK_CSS_SELECTOR_DESCENDANT &&
_gtk_css_matcher_has_regions (matcher))
{
for (prev2 = prev->previous; prev2 != NULL; prev2 = prev2->siblings)
for (prev2 = gtk_css_selector_tree_get_previous (prev);
prev2 != NULL;
prev2 = gtk_css_selector_tree_get_sibling (prev2))
gtk_css_selector_tree_match (prev2, matcher, res);
}
@ -497,7 +527,9 @@ gtk_css_selector_name_tree_match (const GtkCssSelectorTree *tree,
gtk_css_selector_tree_found_match (tree, res);
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, matcher, res);
}
@ -563,11 +595,15 @@ gtk_css_selector_region_tree_match (const GtkCssSelectorTree *tree,
gtk_css_selector_tree_found_match (tree, res);
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
{
if (prev->selector.class == &GTK_CSS_SELECTOR_DESCENDANT)
{
for (prev2 = prev->previous; prev2 != NULL; prev2 = prev2->siblings)
for (prev2 = gtk_css_selector_tree_get_previous (prev);
prev2 != NULL;
prev2 = gtk_css_selector_tree_get_sibling (prev2))
gtk_css_selector_tree_match (prev2, matcher, res);
}
@ -636,7 +672,9 @@ gtk_css_selector_class_tree_match (const GtkCssSelectorTree *tree,
gtk_css_selector_tree_found_match (tree, res);
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, matcher, res);
}
@ -696,7 +734,9 @@ gtk_css_selector_id_tree_match (const GtkCssSelectorTree *tree,
gtk_css_selector_tree_found_match (tree, res);
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, matcher, res);
}
@ -781,7 +821,9 @@ gtk_css_selector_pseudoclass_state_tree_match (const GtkCssSelectorTree *tree,
gtk_css_selector_tree_found_match (tree, res);
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
gtk_css_selector_tree_match (prev, matcher, res);
}
@ -1082,10 +1124,12 @@ gtk_css_selector_pseudoclass_position_tree_match_for_region (const GtkCssSelecto
gtk_css_selector_tree_found_match (prev, res);
for (prev2 = prev->previous; prev2 != NULL; prev2 = prev2->siblings)
for (prev2 = gtk_css_selector_tree_get_previous (prev);
prev2 != NULL;
prev2 = gtk_css_selector_tree_get_sibling (prev2))
{
if (prev2->selector.class == &GTK_CSS_SELECTOR_DESCENDANT)
gtk_css_selector_tree_match (prev2->previous, matcher, res);
gtk_css_selector_tree_match (gtk_css_selector_tree_get_previous (prev2), matcher, res);
gtk_css_selector_tree_match (prev2, matcher, res);
}
}
@ -1099,7 +1143,9 @@ gtk_css_selector_pseudoclass_position_tree_match (const GtkCssSelectorTree *tree
PositionType type;
int a, b;
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree);
prev != NULL;
prev = gtk_css_selector_tree_get_sibling (prev))
{
if (prev->selector.class == &GTK_CSS_SELECTOR_REGION)
gtk_css_selector_pseudoclass_position_tree_match_for_region (tree, prev, matcher, res);
@ -1130,7 +1176,7 @@ gtk_css_selector_pseudoclass_position_tree_match (const GtkCssSelectorTree *tree
gtk_css_selector_tree_found_match (tree, res);
for (prev = tree->previous; prev != NULL; prev = prev->siblings)
for (prev = gtk_css_selector_tree_get_previous (tree); prev != NULL; prev = gtk_css_selector_tree_get_sibling (prev))
{
if (prev->selector.class != &GTK_CSS_SELECTOR_REGION)
gtk_css_selector_tree_match (prev, matcher, res);
@ -1541,7 +1587,7 @@ _gtk_css_selector_tree_match_get_change (const GtkCssSelectorTree *tree)
while (tree)
{
change = tree->selector.class->get_change (&tree->selector, change);
tree = tree->parent;
tree = gtk_css_selector_tree_get_parent (tree);
}
return change;
@ -1709,7 +1755,8 @@ _gtk_css_selector_tree_match_all (const GtkCssSelectorTree *tree,
res = g_hash_table_new (g_direct_hash, g_direct_equal);
for (; tree != NULL; tree = tree->siblings)
for (; tree != NULL;
tree = gtk_css_selector_tree_get_sibling (tree))
gtk_css_selector_tree_match (tree, matcher, res);
array = g_ptr_array_sized_new (g_hash_table_size (res));
@ -1756,7 +1803,7 @@ _gtk_css_selector_tree_print (GtkCssSelectorTree *tree, GString *str, char *pref
tree->selector.class->print (&tree->selector, str);
len = str->len - len;
if (tree->previous)
if (gtk_css_selector_tree_get_previous (tree))
{
GString *prefix2 = g_string_new (prefix);
@ -1767,7 +1814,7 @@ _gtk_css_selector_tree_print (GtkCssSelectorTree *tree, GString *str, char *pref
for (i = 0; i < len; i++)
g_string_append_c (prefix2, ' ');
_gtk_css_selector_tree_print (tree->previous, str, prefix2->str);
_gtk_css_selector_tree_print (gtk_css_selector_tree_get_previous (tree), str, prefix2->str);
g_string_free (prefix2, TRUE);
}
else
@ -1780,12 +1827,15 @@ void
_gtk_css_selector_tree_match_print (const GtkCssSelectorTree *tree,
GString *str)
{
const GtkCssSelectorTree *parent;
g_return_if_fail (tree != NULL);
tree->selector.class->print (&tree->selector, str);
if (tree->parent)
_gtk_css_selector_tree_match_print (tree->parent, str);
parent = gtk_css_selector_tree_get_parent (tree);
if (parent != NULL)
_gtk_css_selector_tree_match_print (parent, str);
}
void
@ -1794,7 +1844,7 @@ _gtk_css_selector_tree_free (GtkCssSelectorTree *tree)
if (tree == NULL)
return;
_gtk_css_selector_tree_free (tree->siblings);
_gtk_css_selector_tree_free (tree->sibling);
_gtk_css_selector_tree_free (tree->previous);
g_free (tree);
@ -1894,7 +1944,7 @@ subdivide_infos (GList *infos, GtkCssSelectorTree *parent)
tree->previous = subdivide_infos (matched, tree);
if (remaining)
tree->siblings = subdivide_infos (remaining, parent);
tree->sibling = subdivide_infos (remaining, parent);
return tree;
}