74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
//! \file settable.hpp
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//! \brief C++ Library (header-only).
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// settable.hpp ------------------------------------------------------------//
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//
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// Copyright Jens Luedicke 2010
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//----------------------------------------------------------------------------//
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#ifndef SETTABLE_HPP
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#define SETTABLE_HPP
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#include "string2type.hpp"
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#include <map>
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#include <string>
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#include <boost/shared_ptr.hpp>
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class abstract_attribute {
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public:
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virtual void set_value(const std::string &value) = 0;
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};
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template<typename T>
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class attribute : public abstract_attribute {
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public:
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explicit attribute(T &object)
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: reference(object) {
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}
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virtual void set_value(const std::string &value) {
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reference = string2type::convert<T>(value);
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}
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T &reference;
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};
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#define REGISTER_ATTRIBUTE(Type, Attribute) \
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this->register_attribute<Type>(#Attribute, this->Attribute);
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class attributes {
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public:
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void set_attribute(const std::string &attr, const std::string &value) {
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attributes_map::iterator it = attributes.find(attr);
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if (it != attributes.end()) {
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it->second->set_value(value);
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}
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}
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template<typename T>
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void register_attribute(const std::string &name, T &object) {
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typedef attribute<T> specific_attribute;
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attribute_ptr attribute(new specific_attribute(object));
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attributes.insert(std::make_pair(name, attribute));
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}
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private:
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typedef boost::shared_ptr<abstract_attribute> attribute_ptr;
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typedef std::map<std::string, attribute_ptr> attributes_map;
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attributes_map attributes;
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};
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#endif /* SETTABLE_HPP */
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