examples/scaling_doubles/scaler.cpp

/*
 * Copyright 2014 Google Inc. 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 "scaler.h"
#include "multiplier.h"

using fruit::Component;
using fruit::Injector;
using fruit::createComponent;

class ScalerImpl : public Scaler {
private:
  Multiplier* multiplier;
  double factor;
  
public:
  INJECT(ScalerImpl(ASSISTED(double) factor, Multiplier* multiplier))
    : multiplier(multiplier), factor(factor) {
  }
  
  double scale(double x) override {
    return multiplier->multiply(x, factor);
  }
};


Component<ScalerFactory> getScalerComponent() {
  return createComponent()
    .bind<Scaler, ScalerImpl>()
    .install(getMultiplierComponent);
}