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css: Ensure the tree built is always the same

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We add some "artificial" ordering to the otherwise unordered
tree nodes. This means the tree will be the same every time for the
same input. This is good because e.g. tree order affects the
reordering of the simple selectors, which may affect how
css providers are printed, which need to be consistent for
the css tests to work.
This commit is contained in:
Alexander Larsson 2012-11-29 16:20:14 +01:00
parent 3d5e8f98ec
commit 146b6f3a93
1 changed files with 107 additions and 2 deletions
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109
gtk/gtkcssselector.c
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@ -38,6 +38,8 @@ struct _GtkCssSelectorClass {
const GtkCssMatcher *matcher,
GHashTable *res);
GtkCssChange (* get_change) (const GtkCssSelector *selector);
int (* compare_one) (const GtkCssSelector *a,
const GtkCssSelector *b);
guint increase_id_specificity :1;
guint increase_class_specificity :1;
@ -121,6 +123,15 @@ gtk_css_selector_get_change (const GtkCssSelector *selector)
return selector->class->get_change (selector);
}
static int
gtk_css_selector_compare_one (const GtkCssSelector *a, const GtkCssSelector *b)
{
if (a->class != b->class)
return strcmp (a->class->name, b->class->name);
else
return a->class->compare_one (a, b);
}
static const GtkCssSelector *
gtk_css_selector_previous (const GtkCssSelector *selector)
{
@ -177,6 +188,13 @@ gtk_css_selector_descendant_tree_match (const GtkCssSelectorTree *tree,
}
}
static int
gtk_css_selector_descendant_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return 0;
}
static GtkCssChange
gtk_css_selector_descendant_get_change (const GtkCssSelector *selector)
{
@ -189,6 +207,7 @@ static const GtkCssSelectorClass GTK_CSS_SELECTOR_DESCENDANT = {
gtk_css_selector_descendant_match,
gtk_css_selector_descendant_tree_match,
gtk_css_selector_descendant_get_change,
gtk_css_selector_descendant_compare_one,
FALSE, FALSE, FALSE, FALSE, FALSE
};
@ -234,12 +253,20 @@ gtk_css_selector_child_get_change (const GtkCssSelector *selector)
return _gtk_css_change_for_child (gtk_css_selector_get_change (gtk_css_selector_previous (selector)));
}
static int
gtk_css_selector_child_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return 0;
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_CHILD = {
"child",
gtk_css_selector_child_print,
gtk_css_selector_child_match,
gtk_css_selector_child_tree_match,
gtk_css_selector_child_get_change,
gtk_css_selector_child_compare_one,
FALSE, FALSE, FALSE, FALSE, FALSE
};
@ -297,12 +324,21 @@ gtk_css_selector_sibling_get_change (const GtkCssSelector *selector)
return _gtk_css_change_for_sibling (gtk_css_selector_get_change (gtk_css_selector_previous (selector)));
}
static int
gtk_css_selector_sibling_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return 0;
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_SIBLING = {
"sibling",
gtk_css_selector_sibling_print,
gtk_css_selector_sibling_match,
gtk_css_selector_sibling_tree_match,
gtk_css_selector_sibling_get_change,
gtk_css_selector_sibling_compare_one,
FALSE, FALSE, FALSE, FALSE, FALSE
};
@ -350,12 +386,20 @@ gtk_css_selector_adjacent_get_change (const GtkCssSelector *selector)
return _gtk_css_change_for_sibling (gtk_css_selector_get_change (gtk_css_selector_previous (selector)));
}
static int
gtk_css_selector_adjacent_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return 0;
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_ADJACENT = {
"adjacent",
gtk_css_selector_adjacent_print,
gtk_css_selector_adjacent_match,
gtk_css_selector_adjacent_tree_match,
gtk_css_selector_adjacent_get_change,
gtk_css_selector_adjacent_compare_one,
FALSE, FALSE, FALSE, FALSE, FALSE
};
@ -413,12 +457,20 @@ gtk_css_selector_any_get_change (const GtkCssSelector *selector)
return gtk_css_selector_get_change (gtk_css_selector_previous (selector));
}
static int
gtk_css_selector_any_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return 0;
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_ANY = {
"any",
gtk_css_selector_any_print,
gtk_css_selector_any_match,
gtk_css_selector_any_tree_match,
gtk_css_selector_any_get_change,
gtk_css_selector_any_compare_one,
FALSE, FALSE, FALSE, TRUE, TRUE
};
@ -464,12 +516,20 @@ gtk_css_selector_name_get_change (const GtkCssSelector *selector)
return gtk_css_selector_get_change (gtk_css_selector_previous (selector)) | GTK_CSS_CHANGE_NAME;
}
static int
gtk_css_selector_name_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return strcmp (a->data, b->data);
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_NAME = {
"name",
gtk_css_selector_name_print,
gtk_css_selector_name_match,
gtk_css_selector_name_tree_match,
gtk_css_selector_name_get_change,
gtk_css_selector_name_compare_one,
FALSE, FALSE, TRUE, TRUE, FALSE
};
@ -535,12 +595,20 @@ gtk_css_selector_region_get_change (const GtkCssSelector *selector)
return change;
}
static int
gtk_css_selector_region_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return strcmp (a->data, b->data);
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_REGION = {
"region",
gtk_css_selector_region_print,
gtk_css_selector_region_match,
gtk_css_selector_region_tree_match,
gtk_css_selector_region_get_change,
gtk_css_selector_region_compare_one,
FALSE, FALSE, TRUE, TRUE, TRUE
};
@ -586,12 +654,21 @@ gtk_css_selector_class_get_change (const GtkCssSelector *selector)
return gtk_css_selector_get_change (gtk_css_selector_previous (selector)) | GTK_CSS_CHANGE_CLASS;
}
static int
gtk_css_selector_class_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return strcmp (g_quark_to_string (GPOINTER_TO_UINT (a->data)),
g_quark_to_string (GPOINTER_TO_UINT (b->data)));
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_CLASS = {
"class",
gtk_css_selector_class_print,
gtk_css_selector_class_match,
gtk_css_selector_class_tree_match,
gtk_css_selector_class_get_change,
gtk_css_selector_class_compare_one,
FALSE, TRUE, FALSE, TRUE, FALSE
};
@ -637,12 +714,21 @@ gtk_css_selector_id_get_change (const GtkCssSelector *selector)
return gtk_css_selector_get_change (gtk_css_selector_previous (selector)) | GTK_CSS_CHANGE_ID;
}
static int
gtk_css_selector_id_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return strcmp (a->data, b->data);
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_ID = {
"id",
gtk_css_selector_id_print,
gtk_css_selector_id_match,
gtk_css_selector_id_tree_match,
gtk_css_selector_id_get_change,
gtk_css_selector_id_compare_one,
TRUE, FALSE, FALSE, TRUE, FALSE
};
@ -714,12 +800,20 @@ gtk_css_selector_pseudoclass_state_get_change (const GtkCssSelector *selector)
return gtk_css_selector_get_change (gtk_css_selector_previous (selector)) | GTK_CSS_CHANGE_STATE;
}
static int
gtk_css_selector_pseudoclass_state_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return GPOINTER_TO_UINT (a->data) - GPOINTER_TO_UINT (b->data);
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_PSEUDOCLASS_STATE = {
"pseudoclass-state",
gtk_css_selector_pseudoclass_state_print,
gtk_css_selector_pseudoclass_state_match,
gtk_css_selector_pseudoclass_state_tree_match,
gtk_css_selector_pseudoclass_state_get_change,
gtk_css_selector_pseudoclass_state_compare_one,
FALSE, TRUE, FALSE, TRUE, FALSE
};
@ -1057,12 +1151,20 @@ gtk_css_selector_pseudoclass_position_get_change (const GtkCssSelector *selector
return gtk_css_selector_get_change (gtk_css_selector_previous (selector)) | GTK_CSS_CHANGE_POSITION;
}
static int
gtk_css_selector_pseudoclass_position_compare_one (const GtkCssSelector *a,
const GtkCssSelector *b)
{
return GPOINTER_TO_UINT (a->data) - GPOINTER_TO_UINT (b->data);
}
static const GtkCssSelectorClass GTK_CSS_SELECTOR_PSEUDOCLASS_POSITION = {
"pseudoclass-position",
gtk_css_selector_pseudoclass_position_print,
gtk_css_selector_pseudoclass_position_match,
gtk_css_selector_pseudoclass_position_tree_match,
gtk_css_selector_pseudoclass_position_get_change,
gtk_css_selector_pseudoclass_position_compare_one,
FALSE, TRUE, FALSE, TRUE, TRUE
};
@ -1740,10 +1842,13 @@ subdivide_infos (GList *infos, GtkCssSelectorTree *parent)
g_hash_table_iter_init (&iter, ht);
while (g_hash_table_iter_next (&iter, &key, &value))
{
if (GPOINTER_TO_UINT (value) > max_count)
GtkCssSelector *selector = key;
if (GPOINTER_TO_UINT (value) > max_count ||
(GPOINTER_TO_UINT (value) == max_count &&
gtk_css_selector_compare_one (selector, max_selector) < 0))
{
max_count = GPOINTER_TO_UINT (value);
max_selector = key;
max_selector = selector;
}
}