cobalt/cssom/specificity.cc

// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "cobalt/cssom/specificity.h"

namespace cobalt {
namespace cssom {

void Specificity::AddFrom(const Specificity& rhs) {
  const int8 kMaxValue = kint8max;

  for (int i = 0; i < 3; ++i) {
    if (v_[i] > kMaxValue - rhs.v_[i]) {
      LOG(WARNING)
          << "Specificity field exceeds and is clamped to the upper limit ("
          << static_cast<int>(kMaxValue) << ").";
      v_[i] = kMaxValue;
    } else {
      v_[i] += rhs.v_[i];
    }
  }
}

}  // namespace cssom
}  // namespace cobalt