amath/src/lib/ntext.h

69 lines
2.3 KiB
C++

/*-
* Copyright (c) 2014-2018 Carsten Sonne Larsen <cs@innolan.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* Project homepage:
* https://amath.innolan.net
*
*/
#ifndef AMATH_NUMERAL_H
#define AMATH_NUMERAL_H
/**
* @file ntext.h
* @brief Text to numbers handling
* @details
* Converts both between text and numbers AND between numbers and text.
*/
#include "numb.h"
#include "charbuf.h"
/**
* @brief Base class for all numeral systems
* @details
* More info on numeral systems is available at Wikipedia:
* https://wikipedia.org/wiki/Numeral_system
*/
class NumeralSystem
{
public:
NumeralSystem();
virtual ~NumeralSystem();
virtual const char* GetName() = 0;
virtual const char* GetPrefix() = 0;
virtual unsigned int GetDigits() = 0;
virtual void SetDigits(unsigned int digits) = 0;
virtual const char GetFractionPoint() = 0;
virtual void SetFractionPoint(const char fractionPoint) = 0;
virtual const char* GetText(Number* number) = 0;
virtual Number* Parse(const char* text, unsigned int* length, char** end) = 0;
virtual Number* Parse(const char* text);
protected:
CharBuffer* buf;
};
#endif