ShTokenizer.hpp

// Sh: A GPU metaprogramming language.
//
// Copyright (c) 2003 University of Waterloo Computer Graphics Laboratory
// Project administrator: Michael D. McCool
// Authors: Zheng Qin, Stefanus Du Toit, Kevin Moule, Tiberiu S. Popa,
//          Michael D. McCool
// 
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// 
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 
// 1. The origin of this software must not be misrepresented; you must
// not claim that you wrote the original software. If you use this
// software in a product, an acknowledgment in the product documentation
// would be appreciated but is not required.
// 
// 2. Altered source versions must be plainly marked as such, and must
// not be misrepresented as being the original software.
// 
// 3. This notice may not be removed or altered from any source
// distribution.
#ifndef SHTOKENIZER_HPP
#define SHTOKENIZER_HPP

#include <stack>
#include <queue>
#include <vector>
#include <iosfwd>
#include "ShDllExport.hpp"
#include "ShRefCount.hpp"
#include "ShVariable.hpp"
#include "ShBlock.hpp"
#include "ShException.hpp"
#include "ShToken.hpp"

namespace SH {

struct 
SH_DLLEXPORT ShTokenArgument {
  ShTokenArgument(const ShVariable& result, const ShBlockListPtr& blockList)
    : result(result), blockList(blockList)
  {
  }
  
  ShVariable result; 
  ShBlockListPtr blockList; 
};

class 
SH_DLLEXPORT ShTokenizerException : public ShException {
public:
  ShTokenizerException(const std::string& error);
};
  
class 
SH_DLLEXPORT ShTokenizer {
public:
  ShTokenizer();



  bool pushArgQueue();
  bool pushArg();
  bool processArg(const ShVariable& result);



  ShTokenArgument getArgument();
  void popArgQueue();

  ShBlockListPtr blockList();

private:
  std::stack<ShBlockListPtr> m_listStack;
  std::stack< std::queue<ShTokenArgument> > m_argQueueStack;
};

}

#endif

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