344 lines
12 KiB
C++
344 lines
12 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2014
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
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* EU, LV-1021.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#pragma once
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#ifndef UTILITY_NULLABLE_PROPERTY_INCLUDE_H_
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#define UTILITY_NULLABLE_PROPERTY_INCLUDE_H_
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#include <string>
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#include "Setter.h"
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#include "Getter.h"
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#include "nullable.h"
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#include "ToString.h"
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#include "CallTraits.h"
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template<typename Type, class Setter = setter::simple<Type>, class Getter = getter::simple<Type> >
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class nullable_property
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{
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private:
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typedef typename NSCallTraits<Type>::param_type Parameter;
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public:
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nullable_property() {}
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nullable_property(const Setter& setter, const Getter& getter = Getter()) : _value(setter, getter) {}
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nullable_property(Parameter value, const Setter& setter = Setter(), const Getter& getter = Getter())
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: _value (value, setter, getter) {}
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template<typename U, class S, class G>
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nullable_property(nullable_property<U, S, G> const& rhs, const Setter& setter = Setter(), const Getter& getter = Getter())
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: _value(rhs, setter, getter) {}
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nullable_property(const nullable__<Type>& value) : _value(value) {}
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template<typename U> const nullable_property& operator =(const U& value)
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{
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return ::nullable_property_setter(*this, value);
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}
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const nullable_property& operator =(const nullable_property& value)
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{
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return ::nullable_property_setter(*this, value);
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}
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template<typename U> const nullable_property& nullable_property_setter(const U& value)
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{
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_value = static_cast<Type>(value);
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return *this;
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}
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const nullable_property& nullable_property_setter(const nullable_property& value)
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{
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_value = value;
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return *this;
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}
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template<typename U, class S, class G> const nullable_property& nullable_property_setter(const nullable_property<U, S, G>& value)
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{
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_value = value;
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return *this;
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}
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const nullable_property& nullable_property_setter(const nullable__<Type>& value)
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{
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_value = value;
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return *this;
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}
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operator const Type() const {return get();}
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operator const nullable__<Type>() const {return _value.get_nullable();}
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const Type get() const {return _value.get();}
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const Type operator*() const {return get();}
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const Type get_value_or(Parameter value) const {return _value.is_init() ? get() : value;}
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const Type get_value_or_default() const {return get_value_or(Type());}
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Type const* const operator->() const {return _value.get_ptr();}
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Type* operator->() {return _value.get_ptr();}
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Type& operator*() {return *_value;}
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const bool is_init() const {return _value.is_init();}
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void reset() {_value.reset();}
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void init() {_value.init();}
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const std::string ToString() const {return ::ToString(get());}
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const bool operator ==(nullable_property<Type, Setter, Getter> const& rhs) const {return get() == rhs.get()}
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const bool operator !=(nullable_property<Type, Setter, Getter> const& rhs) const {return get() != rhs.get();}
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const bool operator < (nullable_property<Type, Setter, Getter> const& rhs) const {return get() < rhs.get();}
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const bool operator > (nullable_property<Type, Setter, Getter> const& rhs) const {return get() > rhs.get();}
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const bool operator <=(nullable_property<Type, Setter, Getter> const& rhs) const {return get() <= rhs.get();}
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const bool operator >=(nullable_property<Type, Setter, Getter> const& rhs) const {return get() >= rhs.get();}
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const bool operator ==(Parameter rhs) const {return get() == rhs;}
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const bool operator !=(Parameter rhs) const {return get() != rhs;}
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const bool operator < (Parameter rhs) const {return get() < rhs;}
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const bool operator > (Parameter rhs) const {return get() > rhs;}
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const bool operator <=(Parameter rhs) const {return get() <= rhs;}
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const bool operator >=(Parameter rhs) const {return get() >= rhs;}
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template<typename T> const bool operator ==(const T rhs) const {return get() == rhs;}
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template<typename T> const bool operator !=(const T rhs) const {return get() != rhs;}
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template<typename T> const bool operator < (const T rhs) const {return get() < rhs;}
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template<typename T> const bool operator > (const T rhs) const {return get() > rhs;}
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template<typename T> const bool operator <=(const T rhs) const {return get() <= rhs;}
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template<typename T> const bool operator >=(const T rhs) const {return get() >= rhs;}
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private:
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template<typename Type, class Setter, class Getter, bool simple>
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class InternalNullableProperty
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{
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private:
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typedef typename NSCallTraits<Type>::param_type Parameter;
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public:
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InternalNullableProperty() {}
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InternalNullableProperty(Parameter value, const Setter&, const Getter&) : _value(value) { Setter()(*_value, value); }
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InternalNullableProperty(const nullable__<Type>& value)
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{
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if (value.is_init())
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{
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_value = value;
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Setter()(*_value, value.get());
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}
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}
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inline void operator =(Parameter value)
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{
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_value = value;
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Setter()(*_value, value);
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}
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template<typename U, class S, class G>
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void operator =(const nullable_property<U, S, G>& rhs)
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{
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if (rhs.is_init())
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{
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_value = rhs.get();
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Setter()(*_value, rhs.get());
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}
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else
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{
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_value = nullable__<Type>();
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}
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}
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inline void operator =(const nullable__<Type>& value)
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{
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if (value.is_init())
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{
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_value = value;
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Setter()(*_value, value.get());
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}
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else
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{
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_value = nullable__<Type>();
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}
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}
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inline const Type get() const {return Getter()(*_value);}
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inline const nullable__<Type> get_nullable() const {return is_init() ? nullable__<Type>(get()) : nullable__<Type>();}
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inline Type const* const get_ptr() const {return _value.get_ptr();}
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inline Type* get_ptr() {return _value.get_ptr();}
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inline Type& operator*() {return *_value;}
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inline const bool is_init() const {return _value.is_init();}
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inline void reset() {_value.reset();}
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inline void init() {_value.init();}
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private:
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nullable__<Type> _value;
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};
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template<typename Type, class Setter, class Getter>
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class InternalNullableProperty<Type, Setter, Getter, false>
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{
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private:
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typedef typename NSCallTraits<Type>::param_type Parameter;
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public:
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InternalNullableProperty() {}
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InternalNullableProperty(const Setter& setter, const Getter& getter)
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:
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_setter(setter),
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_getter(getter)
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{
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}
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InternalNullableProperty(Parameter value, const Setter& setter, const Getter& getter)
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:
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_value(value),
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_setter(setter),
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_getter(getter)
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{
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_setter(*_value, value);
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}
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template<typename U, class S, class G>
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InternalNullableProperty(nullable_property<U, S, G> const& rhs, const Setter& setter, const Getter& getter)
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:
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_setter(setter),
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_getter(getter)
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{
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if (rhs.is_init())
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{
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_value = rhs.get();
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_setter(*_value, rhs.get());
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}
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}
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InternalNullableProperty(const nullable__<Type>& value)
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{
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if (value.is_init())
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{
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_value = value;
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_setter(*_value, value.get());
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}
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}
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inline void operator =(Parameter value)
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{
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_value = value;
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_setter(*_value, value);
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}
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template<typename U, class S, class G>
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void operator =(const nullable_property<U, S, G>& rhs)
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{
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if (rhs.is_init())
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{
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_value = rhs.get();
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_setter(*_value, rhs.get());
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}
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else
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{
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_value = nullable__<Type>();
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}
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}
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inline void operator =(const nullable__<Type>& value)
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{
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if (value.is_init())
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{
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_value = value;
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_setter(*_value, value.get());
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}
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else
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{
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_value = nullable__<Type>();
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}
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}
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inline const Type get() const {return _getter(*_value);}
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inline const nullable__<Type> get_nullable() const {return is_init() ? nullable__<Type>(get()) : nullable__<Type>();}
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inline Type const* const get_ptr() const {return _value.get_ptr();}
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inline Type* get_ptr() {return _value.get_ptr();}
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inline Type& operator*() {return *_value;}
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inline const bool is_init() const {return _value.is_init();}
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inline void reset() {_value.reset();}
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inline void init() {_value.init();}
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private:
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nullable__<Type> _value;
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Setter _setter;
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Getter _getter;
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};
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private:
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InternalNullableProperty<Type, Setter, Getter, true> _value;
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};
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template<class T, class S, class G> const bool operator ==(const T x, nullable_property<T, S, G> const& y) {return y == x;}
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template<class T, class S, class G> const bool operator !=(const T x, nullable_property<T, S, G> const& y) {return y != x;}
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template<class T, class S, class G> const bool operator < (const T x, nullable_property<T, S, G> const& y) {return y >= x;}
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template<class T, class S, class G> const bool operator > (const T x, nullable_property<T, S, G> const& y) {return y <= x;}
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template<class T, class S, class G> const bool operator <=(const T x, nullable_property<T, S, G> const& y) {return y > x;}
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template<class T, class S, class G> const bool operator >=(const T x, nullable_property<T, S, G> const& y) {return y < x;}
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template<typename V, class T, class S, class G> const bool operator ==(const V x, nullable_property<T, S, G> const& y) {return y == x;}
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template<typename V, class T, class S, class G> const bool operator !=(const V x, nullable_property<T, S, G> const& y) {return y != x;}
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template<typename V, class T, class S, class G> const bool operator < (const V x, nullable_property<T, S, G> const& y) {return y < x;}
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template<typename V, class T, class S, class G> const bool operator > (const V x, nullable_property<T, S, G> const& y) {return y > x;}
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template<typename V, class T, class S, class G> const bool operator <=(const V x, nullable_property<T, S, G> const& y) {return y <= x;}
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template<typename V, class T, class S, class G> const bool operator >=(const V x, nullable_property<T, S, G> const& y) {return y >= x;}
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template<typename T, class S, class G, typename U>
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const nullable_property<T, S, G>& nullable_property_setter(nullable_property<T, S, G>& lhs, const U& rhs)
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{
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return lhs.nullable_property_setter(rhs);
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}
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template<typename T, typename U, class S, class G>
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const nullable__<T>& nullable_setter(nullable__<T>& lhs, const nullable_property<U, S, G>& rhs)
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{
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if (rhs.is_init())
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return lhs.nullable_setter(rhs);
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else
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return lhs;
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}
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template<typename T, class S, class G>
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const std::string ToString(const nullable_property<T, S, G>& value)
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{
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return value.ToString();
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}
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template<typename T, class S, class G>
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const nullable_property<T, S, G> merge(const nullable_property<T, S, G>& prev, const nullable_property<T, S, G>& current)
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{
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if (!current.is_init())
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return prev;
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return current;
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}
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#endif // UTILITY_NULLABLE_PROPERTY_INCLUDE_H_
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