text: /*
   * Licensed to Green Energy Corp (www.greenenergycorp.com) under one or
   * more contributor license agreements. See the NOTICE file distributed
   * with this work for additional information regarding copyright ownership.
   * Green Energy Corp licenses this file to you 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.
   *
   * This project was forked on 01/01/2013 by Automatak, LLC and modifications
   * may have been made to this file. Automatak, LLC licenses these modifications
   * to you under the terms of the License.
   */
  #ifndef OPENPAL_FUNCTION1_H
  #define OPENPAL_FUNCTION1_H
  
  #include "Erasure.h"
  
  #include <assert.h>
  
  namespace openpal
  {
  
  template <class A, class R>
  class Function1 : private Erasure
  {
  	typedef R (*Invoke)(const uint8_t* pBuffer, const A& arg);
  
  public:
  
  	Function1() : Erasure(), pInvoke(nullptr)
  	{}
  
  	Function1(const Function1& other) : Erasure(), pInvoke(other.pInvoke)
  	{
  		this->CopyErasure(other);
  	}
  
  	Function1& operator=(const Function1& other)
  	{
  		if (this != &other)
  		{
  			this->pInvoke = other.pInvoke;
  			this->CopyErasure(other);
  		}
  
  		return *this;
  	}
  
  	template <class Lambda>
  	static Function1<A, R> Bind(Lambda& lambda)
  	{
  		static_assert(sizeof(Lambda) <= sizes::MAX_ERASURE_SIZE, "Lambda is too big for erasure");
  		Function1<A, R> function(&RunLambda<Lambda>, sizeof(lambda));
  		new(function.bytes) Lambda(lambda); // use placement new
  		return function;
  	}
  
  	R Apply(const A& arg) const
  	{
  		assert(pInvoke);
  		return (*pInvoke)(bytes, arg);
  	}
  
  private:
  
  	template <class Lambda>
  	static R RunLambda(const uint8_t* pBuffer, const A& arg)
  	{
  		return (*reinterpret_cast<const Lambda*>(pBuffer))(arg);
  	}
  
  	Function1(Invoke pInvoke_, uint32_t size_) : Erasure(size_), pInvoke(pInvoke_)
  	{}
  
  	Invoke pInvoke;
  };
  
  }
  
  #endif
  