115 lines
2.6 KiB
C++
115 lines
2.6 KiB
C++
/* This file is part of the Pangolin Project.
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* http://github.com/stevenlovegrove/Pangolin
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*
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* Copyright (c) 2014 Steven Lovegrove
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include <pangolin/var/varvaluet.h>
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#include <pangolin/var/varwrapper.h>
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namespace pangolin
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{
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template<typename T>
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class VarValue : public VarValueT<typename std::remove_reference<T>::type>
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{
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public:
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typedef typename std::remove_reference<T>::type VarT;
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~VarValue()
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{
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delete str_ptr;
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}
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VarValue()
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{
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Init();
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}
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VarValue(const T& value)
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: value(value), default_value(value)
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{
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Init();
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}
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VarValue(const T& value, const VarT& default_value)
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: value(value), default_value(default_value)
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{
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Init();
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}
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const char* TypeId() const
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{
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return typeid(VarT).name();
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}
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void Reset()
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{
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value = default_value;
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}
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VarMeta& Meta()
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{
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return meta;
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}
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const VarT& Get() const
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{
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return value;
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}
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VarT& Get()
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{
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return value;
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}
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void Set(const VarT& val)
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{
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value = val;
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}
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protected:
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void Init()
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{
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if(std::is_same<VarT,std::string>::value) {
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str_ptr = 0;
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this->str = (VarValueT<std::string>*)this;
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}else{
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str_ptr = new VarWrapper<std::string,VarT>(*this);
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this->str = str_ptr;
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}
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}
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// If non-zero, this class owns this str pointer in the base-class.
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VarValueT<std::string>* str_ptr;
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T value;
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VarT default_value;
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VarMeta meta;
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};
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}
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