110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/*
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Copyright 2016, 2017 Michele "King_DuckZ" Santullo
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This file is part of MyCurry.
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MyCurry 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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MyCurry 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 MyCurry. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <boost/call_traits.hpp>
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#include <boost/algorithm/clamp.hpp>
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#include <cassert>
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namespace curry {
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template <typename T>
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class ScalarConstrainer {
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public:
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typename boost::call_traits<T>::const_reference operator() (
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typename boost::call_traits<T>::param_type parMin,
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typename boost::call_traits<T>::param_type parMax,
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typename boost::call_traits<T>::param_type parValue
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) {
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return boost::algorithm::clamp(parValue, parMin, parMax);
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}
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};
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template <typename T, typename Constrainer=ScalarConstrainer<T>>
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class ConstrainedValue {
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using T_param = typename boost::call_traits<T>::param_type;
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public:
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ConstrainedValue (T_param parMin, T_param parMax, T_param parValue);
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virtual ~ConstrainedValue() noexcept = default;
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void set (T_param parNew);
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typename boost::call_traits<T>::const_reference get() const;
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typename boost::call_traits<T>::const_reference get_min() const;
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typename boost::call_traits<T>::const_reference get_max() const;
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void change_minmax (T_param parMin, T_param parMax);
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ConstrainedValue& operator= (T_param parValue);
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private:
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T m_min;
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T m_max;
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T m_value;
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};
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template <typename T, typename Constrainer>
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ConstrainedValue<T, Constrainer>::ConstrainedValue (
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T_param parMin,
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T_param parMax,
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T_param parValue
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) :
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m_min(parMin),
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m_max(parMax),
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m_value(parValue)
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{
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assert(parMin <= parMax);
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}
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template <typename T, typename Constrainer>
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void ConstrainedValue<T, Constrainer>::set (T_param parNew) {
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m_value = Constrainer()(m_min, m_max, parNew);
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}
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template <typename T, typename Constrainer>
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typename boost::call_traits<T>::const_reference ConstrainedValue<T, Constrainer>::get() const {
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return m_value;
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}
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template <typename T, typename Constrainer>
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typename boost::call_traits<T>::const_reference ConstrainedValue<T, Constrainer>::get_min() const {
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return m_min;
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}
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template <typename T, typename Constrainer>
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typename boost::call_traits<T>::const_reference ConstrainedValue<T, Constrainer>::get_max() const {
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return m_max;
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}
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template <typename T, typename Constrainer>
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void ConstrainedValue<T, Constrainer>::change_minmax (
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T_param parMin,
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T_param parMax
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) {
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assert(parMin <= parMax);
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m_min = parMin;
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m_max = parMax;
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this->set(m_value);
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}
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template <typename T, typename Constrainer>
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ConstrainedValue<T, Constrainer>& ConstrainedValue<T, Constrainer>::operator= (T_param parValue) {
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this->set(parValue);
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return *this;
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}
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} //namespace curry
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