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/*
Ousía
Copyright (C) 2014 Benjamin Paaßen, Andreas Stöckel
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _OUSIA_UTILS_CSS_PARSER_HPP_
#define _OUSIA_UTILS_CSS_PARSER_HPP_
#include <istream>
#include <tuple>
namespace ousia {
namespace utils {
/*
* The Specificity or Precedence of a CSS RuleSet, which decides which
* rules are applied when different RuleSets contain conflicting information.
*
* The Specificity is calculated using the official W3C recommendation
* http://www.w3.org/TR/CSS2/cascade.html#specificity
*
* Note that we do not need to use the integer 'a', since we do not allow
* local style definitions for single nodes.
*/
struct Specificity {
int b;
int c;
int d;
Specificity(int b, int c, int d): b(b), c(c), d(d) {}
};
bool operator< (const Specificity &x, const Specificity &y){
return std::tie(x.b, x.c, x.d) < std::tie(y.b, y.c, y.d);
}
bool operator> (const Specificity &x, const Specificity &y){
return std::tie(x.b, x.c, x.d) > std::tie(y.b, y.c, y.d);
}
bool operator== (const Specificity &x, const Specificity &y){
return std::tie(x.b, x.c, x.d) == std::tie(y.b, y.c, y.d);
}
}
}
#endif
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