assimp/code/FBXParser.h

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

Copyright (c) 2006-2012, assimp team
All rights reserved.

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  copyright notice, this list of conditions and the
  following disclaimer.

* Redistributions in binary form must reproduce the above
  copyright notice, this list of conditions and the
  following disclaimer in the documentation and/or other
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* Neither the name of the assimp team, nor the names of its
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  derived from this software without specific prior
  written permission of the assimp team.

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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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*/

/** @file  FBXParser.h
 *  @brief FBX parsing code
 */
#ifndef INCLUDED_AI_FBX_PARSER_H
#define INCLUDED_AI_FBX_PARSER_H

#include <vector>
#include <map>
#include <string>

#include <boost/shared_ptr.hpp>

#include "LogAux.h"

#include "FBXCompileConfig.h"
#include "FBXTokenizer.h"

namespace Assimp {
namespace FBX {

	class Scope;
	class Parser;
	class Element;

	// XXX should use C++11's unique_ptr - but assimp's need to keep working with 03
	typedef std::vector< Scope* > ScopeList;
	typedef std::fbx_unordered_multimap< std::string, Element* > ElementMap;

#	define new_Scope new Scope
#	define new_Element new Element


/** FBX data entity that consists of a key:value tuple.
 *
 *  Example:
 *  @verbatim
 *    AnimationCurve: 23, "AnimCurve::", "" {
 *        [..]
 *    }
 *  @endverbatim
 *
 *  As can be seen in this sample, elements can contain nested #Scope
 *  as their trailing member.  **/
class Element
{
public:

	Element(Parser& parser);
	~Element();

public:

	const TokenList& Tokens() const {
		return tokens;
	}

private:

	TokenList tokens;
	boost::scoped_ptr<Scope> compound;
};



/** FBX data entity that consists of a 'scope', a collection
 *  of not necessarily unique #Element instances.
 *
 *  Example:
 *  @verbatim
 *    GlobalSettings:  {
 *        Version: 1000
 *        Properties70: 
 *        [...]
 *    }
 *  @endverbatim  */
class Scope
{

public:

	Scope(Parser& parser, bool topLevel = false);
	~Scope();

public:

	const ElementMap& Elements() const	{
		return elements;
	}

private:

	ElementMap elements;
};


/** FBX parsing class, takes a list of input tokens and generates a hierarchy
 *  of nested #Scope instances, representing the fbx DOM.*/
class Parser 
{
public:
	
	Parser (const TokenList& tokens);
	~Parser();

public:

	const Scope& GetRootScope() const {
		return *root.get();
	}

private:

	friend class Scope;
	friend class Element;

	TokenPtr AdvanceToNextToken();

	TokenPtr LastToken() const;
	TokenPtr CurrentToken() const;

private:

	const TokenList& tokens;
	
	TokenPtr last, current;
	TokenList::const_iterator cursor;
	boost::scoped_ptr<Scope> root;
};


} // ! FBX
} // ! Assimp

#endif // ! INCLUDED_AI_FBX_PARSER_H