84 lines
1.8 KiB
C++
84 lines
1.8 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 <map>
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#include <string>
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#include <boost/assert.hpp>
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#include <boost/shared_ptr.hpp>
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namespace string2type {
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template<typename T>
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T convert(const std::string &value);
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}
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namespace settable {
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class abstract_setter {
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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 setter: public abstract_setter {
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public:
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explicit setter(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_MEMBER(Type, Attribute) \
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this->register_setter<Type>(#Attribute, this->Attribute);
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class settable {
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public:
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void set_attribute(const std::string &attr, const std::string &value) {
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setters_map::iterator it = setters.find(attr);
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if (it != setters.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_setter(const std::string &name, T &ptr) {
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typedef setter<T> specific_setter;
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setter_ptr setter(new specific_setter(ptr));
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setters.insert(std::make_pair(name, setter));
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}
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private:
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typedef boost::shared_ptr<abstract_setter> setter_ptr;
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typedef std::map<std::string, setter_ptr> setters_map;
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setters_map setters;
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};
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}
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#endif /* SETTABLE_HPP */
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