daefb12a23
From a set of GtkCssSelectors and the rulesets they match to we create a large decision tree that lets us efficitently match against all the rules and return the set of matched rulesets. The tree is created such that at each level we pick the initial rule[1] in all the considered selectors for that level and use put the one that is in most selectors in the node. All selectors matching that are put in the previous part of the tree.
58 lines
2.6 KiB
C
58 lines
2.6 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GTK_CSS_SELECTOR_PRIVATE_H__
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#define __GTK_CSS_SELECTOR_PRIVATE_H__
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#include "gtk/gtkcssmatcherprivate.h"
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#include "gtk/gtkcssparserprivate.h"
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G_BEGIN_DECLS
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typedef struct _GtkCssSelector GtkCssSelector;
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typedef struct _GtkCssSelectorTree GtkCssSelectorTree;
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typedef struct _GtkCssSelectorTreeBuilder GtkCssSelectorTreeBuilder;
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GtkCssSelector * _gtk_css_selector_parse (GtkCssParser *parser);
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void _gtk_css_selector_free (GtkCssSelector *selector);
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char * _gtk_css_selector_to_string (const GtkCssSelector *selector);
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void _gtk_css_selector_print (const GtkCssSelector *selector,
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GString *str);
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GtkCssChange _gtk_css_selector_get_change (const GtkCssSelector *selector);
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gboolean _gtk_css_selector_matches (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher);
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int _gtk_css_selector_compare (const GtkCssSelector *a,
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const GtkCssSelector *b);
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void _gtk_css_selector_tree_free (GtkCssSelectorTree *tree);
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GPtrArray *_gtk_css_selector_tree_match_all (GtkCssSelectorTree *tree,
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const GtkCssMatcher *matcher);
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GtkCssSelectorTreeBuilder *_gtk_css_selector_tree_builder_new (void);
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void _gtk_css_selector_tree_builder_add (GtkCssSelectorTreeBuilder *builder,
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GtkCssSelector *selectors,
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gpointer match);
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GtkCssSelectorTree * _gtk_css_selector_tree_builder_build (GtkCssSelectorTreeBuilder *builder);
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void _gtk_css_selector_tree_builder_free (GtkCssSelectorTreeBuilder *builder);
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G_END_DECLS
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#endif /* __GTK_CSS_SELECTOR_PRIVATE_H__ */
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