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88 lines
2.5 KiB
88 lines
2.5 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file QBigInt.h
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* @author Yann yann@ethdev.com
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* @date 2015
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* Represent a big integer (u256, bigint, ...) to be used in QML.
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*/
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#pragma once
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#include "boost/variant.hpp"
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#include "boost/variant/multivisitors.hpp"
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#include <QObject>
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#include <libdevcore/CommonJS.h>
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#include <libdevcore/Common.h>
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using namespace dev;
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namespace dev
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{
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namespace mix
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{
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using BigIntVariant = boost::variant<dev::u256, dev::bigint>;
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struct add: public boost::static_visitor<BigIntVariant>
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{
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template<class T1, class T2>
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BigIntVariant operator()(T1 _value, T2 _otherValue) const { return _value + _otherValue; }
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};
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struct subtract: public boost::static_visitor<BigIntVariant>
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{
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template<class T1, class T2>
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BigIntVariant operator()(T1 _value, T2 _otherValue) const { return _value - _otherValue; }
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};
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struct multiply: public boost::static_visitor<BigIntVariant>
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{
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template<class T1, class T2>
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BigIntVariant operator()(T1 _value, T2 _otherValue) const { return _value * _otherValue; }
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};
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struct divide: public boost::static_visitor<BigIntVariant>
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{
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template<class T1, class T2>
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BigIntVariant operator()(T1 _value, T2 _otherValue) const { return _value / _otherValue; }
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};
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class QBigInt: public QObject
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{
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Q_OBJECT
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public:
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QBigInt(dev::u256 const& _value, QObject* _parent = 0): QObject(_parent), m_internalValue(_value) {}
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QBigInt(dev::bigint const& _value, QObject* _parent = 0): QObject(_parent), m_internalValue(_value) {}
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QBigInt(BigIntVariant const& _value, QObject* _parent = 0): QObject(_parent), m_internalValue(_value){}
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~QBigInt() {}
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BigIntVariant internalValue() { return m_internalValue; }
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Q_INVOKABLE QString value() const;
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Q_INVOKABLE QBigInt* subtract(QBigInt* const& _value) const;
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Q_INVOKABLE QBigInt* add(QBigInt* const& _value) const;
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Q_INVOKABLE QBigInt* multiply(QBigInt* const& _value) const;
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Q_INVOKABLE QBigInt* divide(QBigInt* const& _value) const;
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protected:
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BigIntVariant m_internalValue;
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};
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}
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}
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