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/*
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Math.h>
#include <AK/String.h>
#include <AK/Types.h>
class KeypadValue {
friend class Keypad;
public:
KeypadValue(i64, u8);
KeypadValue(i64);
explicit KeypadValue(StringView);
KeypadValue operator+(KeypadValue const&);
KeypadValue operator-(KeypadValue const&);
KeypadValue operator*(KeypadValue const&);
KeypadValue operator-(void) const;
bool operator<(KeypadValue const&);
bool operator>(KeypadValue const&);
bool operator==(KeypadValue const&);
explicit KeypadValue(double);
explicit operator double();
private:
template<typename T, typename F>
T operator_helper(KeypadValue const& lhs, KeypadValue const& rhs, F callback);
// This class represents a pair of a value together with the amount of decimal places that value is offset by.
// For example, if we were to represent the value -123.55 in this format, m_value would be -12355 and
// m_decimal_places would be 2, because when you shift -12355 2 digits to the right, you get -123.55.
// This way, most operations don't have to be performed on doubles, but can be performed without loss of
// precision on this class.
i64 m_value { 0 };
u8 m_decimal_places { 0 };
};
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