ShInfo.hpp

// Sh: A GPU metaprogramming language.
//
// Copyright 2003-2005 Serious Hack Inc.
// 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
// MA  02110-1301, USA
#ifndef SHINFO_HPP
#define SHINFO_HPP

#include <list>
#include <string>
#include "ShDllExport.hpp"

namespace SH {

class 
SH_DLLEXPORT
ShInfo {
public:
  virtual ~ShInfo();
  virtual ShInfo* clone() const = 0;
  
protected:
  ShInfo();
};

class
SH_DLLEXPORT
ShInfoComment: public ShInfo {
public:
  ShInfoComment(const std::string& comment); 
  ShInfo* clone() const;

  std::string comment; 
};

class
SH_DLLEXPORT ShInfoHolder {
public:

  ShInfoHolder();

  // Clones the info list from other 
  ShInfoHolder(const ShInfoHolder &other);

  // Makes this list equal to a clone of other's list
  ShInfoHolder& operator=(const ShInfoHolder &other);

  ~ShInfoHolder();

  // Return the first entry in info whose type matches T, or 0 if no
  // such entry exists.
  // @{
  template<typename T>
  T* get_info();
  template<typename T>
  const T* get_info() const;
  // @}

  // Delete and remove all info entries matching the given type.
  template<typename T>
  void destroy_info();

  // Add the given statement information to the end of the info list.
  void add_info(ShInfo* new_info);

  // Remove the given statement information from the list.
  // Does not delete it, so be careful!
  void remove_info(ShInfo* old_info);

private:
  void erase_all();

  typedef std::list<ShInfo*> InfoList;
  InfoList info;

};

} // namespace SH

#include "ShInfoImpl.hpp"

#endif

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