mirror of
https://github.com/bsnes-emu/bsnes.git
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94b2538af5
byuu says: Basically just a project rename, with s/bsnes/higan and the new icon from lowkee added in. It won't compile on Windows because I forgot to update the resource.rc file, and a path transform command isn't working on Windows. It was really just meant as a starting point, so that v091 WIPs can flow starting from .00 with the new name (it overshadows bsnes v091, so publicly speaking this "shouldn't exist" and will probably be deleted from Google Code when v092 is ready.)
61 lines
2.3 KiB
C++
Executable File
61 lines
2.3 KiB
C++
Executable File
#ifndef NALL_FUNCTION_HPP
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#define NALL_FUNCTION_HPP
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namespace nall {
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template<typename T> class function;
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template<typename R, typename... P> class function<R (P...)> {
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struct container {
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virtual R operator()(P... p) const = 0;
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virtual container* copy() const = 0;
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virtual ~container() {}
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} *callback;
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struct global : container {
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R (*function)(P...);
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R operator()(P... p) const { return function(std::forward<P>(p)...); }
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container* copy() const { return new global(function); }
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global(R (*function)(P...)) : function(function) {}
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};
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template<typename C> struct member : container {
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R (C::*function)(P...);
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C *object;
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R operator()(P... p) const { return (object->*function)(std::forward<P>(p)...); }
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container* copy() const { return new member(function, object); }
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member(R (C::*function)(P...), C *object) : function(function), object(object) {}
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};
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template<typename L> struct lambda : container {
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mutable L object;
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R operator()(P... p) const { return object(std::forward<P>(p)...); }
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container* copy() const { return new lambda(object); }
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lambda(const L& object) : object(object) {}
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};
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public:
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operator bool() const { return callback; }
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R operator()(P... p) const { return (*callback)(std::forward<P>(p)...); }
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void reset() { if(callback) { delete callback; callback = nullptr; } }
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function& operator=(const function &source) {
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if(this != &source) {
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if(callback) { delete callback; callback = nullptr; }
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if(source.callback) callback = source.callback->copy();
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}
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return *this;
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}
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function(const function &source) : callback(nullptr) { operator=(source); }
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function() : callback(nullptr) {}
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function(void *function) : callback(nullptr) { if(function) callback = new global((R (*)(P...))function); }
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function(R (*function)(P...)) { callback = new global(function); }
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template<typename C> function(R (C::*function)(P...), C *object) { callback = new member<C>(function, object); }
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template<typename C> function(R (C::*function)(P...) const, C *object) { callback = new member<C>((R (C::*)(P...))function, object); }
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template<typename L> function(const L& object) { callback = new lambda<L>(object); }
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~function() { if(callback) delete callback; }
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};
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}
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#endif
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