/*
 * This file is a part of EZC -- Easy templating in C++ library
 * and is distributed under the BSD 3-Clause licence.
 * Author: Tomasz Sowa <t.sowa@ttmath.org>
 */

/*
 * Copyright (c) 2021, Tomasz Sowa
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above 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 materials provided with the distribution.
 *
 *  * Neither the name Tomasz Sowa nor the names of contributors to this
 *    project may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef headerfile_ezc_var
#define headerfile_ezc_var

#include "spacewrapper.h"
#include "date/date.h"
#include "modelcontainerwrapper.h"
#include "textstream/textstream.h"



namespace Ezc
{


/*
	a variable
*/
class Var
{
public:


	enum Type
	{
		// string or wstring from space_local
		TYPE_VOID,
		TYPE_BOOL,
		TYPE_LONG,
		TYPE_STRING,
		TYPE_STREAM,

		TYPE_FUNCTION,

		TYPE_MODEL,
		TYPE_MODEL_CONTAINER_WRAPPER,
		TYPE_SPACE_WRAPPER,  // or just type_space

	};

	Type type;

	Var();

	void clear();


	bool to_bool() const;


	void set(bool val);
	void set(const char * str);
	void set(const wchar_t * str);
	void set(const std::string & str);
	void set(const std::wstring & str);

	void set_function(const std::wstring & str);

	bool is_equal(const char * str) const;
	bool is_equal(const wchar_t * str) const;

	bool is_equal(const std::string & str) const;
	bool is_equal(const std::wstring & str) const;

	void serialize_to(pt::WTextStream & str);


	Var & operator<<(const char * str);
	Var & operator<<(const wchar_t * str);
	Var & operator<<(const std::string & str);
	Var & operator<<(const std::wstring & str);
	// add the rest of << operators...


	morm::Model * model;
	morm::ModelContainerWrapper * model_container_wrapper;
	pt::Date * date;
	morm::SpaceWrapper * space_wrapper;



	//pt::Space * space;


	pt::Space space_local;
	pt::WTextStream stream;


private:

	bool to_bool_str() const;

	bool is_equal_bool(const char * str) const;
	bool is_equal_string(const char * str) const;

	bool is_equal_bool(const wchar_t * str) const;
	bool is_equal_string(const wchar_t * str) const;



	/*
	 * old
	 */


	/*
	 * if true then means 'str' is a function name and should be called (res is ignored)
	 *
	 * if false then means 'str' is a string value and res is a boolean value
	 */
	//bool is_function;

	//std::wstring str;	// a string value
	//bool res;			// a boolean value

};



}

#endif