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68 lines
1.2 KiB
C++
68 lines
1.2 KiB
C++
/*
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* FunctionList.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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VCMI_LIB_NAMESPACE_BEGIN
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/// List of functions that share the same signature - can be used to call all of them easily
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template<typename Signature>
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class CFunctionList
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{
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std::vector<std::function<Signature> > funcs;
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public:
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CFunctionList( std::nullptr_t ) { }
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CFunctionList( int ) { }
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CFunctionList( ){ }
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template <typename Functor>
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CFunctionList(const Functor &f)
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{
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funcs.push_back(std::function<Signature>(f));
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}
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CFunctionList(const std::function<Signature> &first)
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{
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if (first)
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funcs.push_back(first);
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}
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CFunctionList & operator+=(const CFunctionList<Signature> &first)
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{
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for( auto & fun : first.funcs)
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{
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funcs.push_back(fun);
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}
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return *this;
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}
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void clear()
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{
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funcs.clear();
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}
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operator bool() const
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{
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return !funcs.empty();
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}
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template <typename... Args>
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void operator()(Args ... args) const
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{
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std::vector<std::function<Signature> > funcs_copy = funcs;
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for( auto & fun : funcs_copy)
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{
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if (fun)
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fun(args...);
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}
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}
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};
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VCMI_LIB_NAMESPACE_END
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