cpp-json/json/json_direct_get_binder.hpp

//
//  json_direct_tuple_binder.hpp
//  json
//
//  Created by Sam Jaffe on 2/26/17.
//

#pragma once

namespace json { namespace binder {
  template <typename T, std::size_t I>
  class get_binder : public binder_impl<T> {
  public:
    using value_type = typename std::remove_reference<decltype(std::get<I>(std::declval<T>()))>::type;
    
    get_binder(binder<value_type> val_binder)
    : impl(std::move(val_binder)) {
      
    }
    
    get_binder(binder_impl<value_type> const & val_binder = value_binder<value_type>())
    : impl(val_binder) {
      
    }
    
    virtual binder_impl<T>* clone() const override { return new get_binder(*this); }
    
    virtual void parse(T& object, char const*& data, parser::options opts) const override {
      impl.parse(std::get<I>(object), data, opts);
    }
    
    virtual void write(T const& val, std::ostream & data) const override {
      impl.write(std::get<I>(val), data);
    }
  private:
    binder<value_type> impl;
  };
} }