1787 lines
43 KiB
C++
1787 lines
43 KiB
C++
/*
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Delegate.h - An efficient interchangeable C function ptr and C++ std::function delegate
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Copyright (c) 2019 Dirk O. Kaar. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __Delegate_h
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#define __Delegate_h
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#if defined(ESP8266)
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#include <c_types.h>
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#elif defined(ESP32)
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#include <esp_attr.h>
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#else
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#define ICACHE_RAM_ATTR
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#define IRAM_ATTR
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#endif
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#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
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#include <functional>
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#include <cstddef>
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#else
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#include "circular_queue/ghostl.h"
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#endif
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namespace detail
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{
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template<typename R, typename... P>
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static R IRAM_ATTR vPtrToFunPtrExec(void* fn, P... args)
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{
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using target_type = R(P...);
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return reinterpret_cast<target_type*>(fn)(std::forward<P...>(args...));
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}
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#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
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template<typename A, typename R, typename... P>
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class DelegatePImpl {
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public:
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using target_type = R(P...);
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protected:
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using FunPtr = target_type*;
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using FunAPtr = R(*)(A, P...);
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using FunVPPtr = R(*)(void*, P...);
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using FunctionType = std::function<target_type>;
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public:
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DelegatePImpl()
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{
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kind = FP;
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fn = nullptr;
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}
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DelegatePImpl(std::nullptr_t)
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{
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kind = FP;
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fn = nullptr;
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}
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~DelegatePImpl()
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{
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if (FUNC == kind)
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functional.~FunctionType();
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else if (FPA == kind)
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obj.~A();
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}
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DelegatePImpl(const DelegatePImpl<A, R, P...>& del)
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{
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kind = del.kind;
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if (FUNC == del.kind)
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{
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new (&functional) FunctionType(del.functional);
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}
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else if (FPA == del.kind)
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{
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fnA = del.fnA;
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new (&obj) A(del.obj);
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}
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else
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{
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fn = del.fn;
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}
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}
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DelegatePImpl(DelegatePImpl<A, R, P...>&& del)
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{
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kind = del.kind;
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if (FUNC == del.kind)
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{
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new (&functional) FunctionType(std::move(del.functional));
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}
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else if (FPA == del.kind)
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{
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fnA = del.fnA;
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new (&obj) A(std::move(del.obj));
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}
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else
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{
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fn = del.fn;
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}
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}
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DelegatePImpl(FunAPtr fnA, const A& obj)
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{
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kind = FPA;
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DelegatePImpl::fnA = fnA;
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new (&this->obj) A(obj);
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}
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DelegatePImpl(FunAPtr fnA, A&& obj)
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{
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kind = FPA;
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DelegatePImpl::fnA = fnA;
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new (&this->obj) A(std::move(obj));
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}
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DelegatePImpl(FunPtr fn)
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{
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kind = FP;
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DelegatePImpl::fn = fn;
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}
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template<typename F> DelegatePImpl(F functional)
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{
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kind = FUNC;
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new (&this->functional) FunctionType(std::forward<F>(functional));
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}
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DelegatePImpl& operator=(const DelegatePImpl<A, R, P...>& del)
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{
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if (this == &del) return *this;
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if (kind != del.kind)
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{
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if (FUNC == kind)
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{
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functional.~FunctionType();
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}
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else if (FPA == kind)
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{
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obj.~A();
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}
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if (FUNC == del.kind)
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{
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new (&this->functional) FunctionType();
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}
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else if (FPA == del.kind)
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{
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new (&obj) A;
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}
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kind = del.kind;
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}
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if (FUNC == del.kind)
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{
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functional = del.functional;
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}
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else if (FPA == del.kind)
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{
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fnA = del.fnA;
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obj = del.obj;
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}
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else
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{
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fn = del.fn;
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}
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return *this;
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}
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DelegatePImpl& operator=(DelegatePImpl<A, R, P...>&& del)
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{
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if (this == &del) return *this;
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if (kind != del.kind)
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{
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if (FUNC == kind)
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{
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functional.~FunctionType();
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}
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else if (FPA == kind)
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{
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obj.~A();
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}
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if (FUNC == del.kind)
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{
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new (&this->functional) FunctionType();
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}
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else if (FPA == del.kind)
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{
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new (&obj) A;
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}
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kind = del.kind;
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}
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if (FUNC == del.kind)
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{
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functional = std::move(del.functional);
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}
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else if (FPA == del.kind)
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{
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fnA = del.fnA;
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obj = std::move(del.obj);
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}
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else
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{
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fn = del.fn;
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}
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return *this;
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}
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DelegatePImpl& operator=(FunPtr fn)
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{
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if (FUNC == kind)
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{
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functional.~FunctionType();
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}
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else if (FPA == kind)
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{
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obj.~A();
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}
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kind = FP;
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this->fn = fn;
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return *this;
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}
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DelegatePImpl& IRAM_ATTR operator=(std::nullptr_t)
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{
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if (FUNC == kind)
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{
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functional.~FunctionType();
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}
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else if (FPA == kind)
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{
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obj.~A();
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}
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kind = FP;
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fn = nullptr;
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return *this;
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}
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operator bool() const
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{
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if (FP == kind)
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{
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return fn;
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}
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else if (FPA == kind)
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{
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return fnA;
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}
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else
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{
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return functional ? true : false;
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}
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}
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static R IRAM_ATTR vPtrToFunAPtrExec(void* self, P... args)
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{
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return static_cast<DelegatePImpl*>(self)->fnA(
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static_cast<DelegatePImpl*>(self)->obj,
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std::forward<P...>(args...));
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};
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operator FunVPPtr() const
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{
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if (FP == kind)
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{
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return vPtrToFunPtrExec<R, P...>;
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}
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else if (FPA == kind)
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{
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return vPtrToFunAPtrExec;
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}
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else
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{
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return [](void* self, P... args) -> R
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{
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return static_cast<DelegatePImpl*>(self)->functional(std::forward<P...>(args...));
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};
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}
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}
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void* arg() const
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{
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if (FP == kind)
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{
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return reinterpret_cast<void*>(fn);
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}
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else
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{
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return const_cast<DelegatePImpl*>(this);
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}
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}
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operator FunctionType() const
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{
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if (FP == kind)
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{
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return fn;
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}
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else if (FPA == kind)
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{
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return [this](P... args) { return fnA(obj, std::forward<P...>(args...)); };
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}
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else
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{
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return functional;
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}
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}
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R IRAM_ATTR operator()(P... args) const
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{
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if (FP == kind)
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{
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return fn(std::forward<P...>(args...));
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}
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else if (FPA == kind)
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{
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return fnA(obj, std::forward<P...>(args...));
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}
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else
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{
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return functional(std::forward<P...>(args...));
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}
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}
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protected:
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enum { FUNC, FP, FPA } kind;
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union {
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FunctionType functional;
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FunPtr fn;
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struct {
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FunAPtr fnA;
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A obj;
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};
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};
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};
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#else
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template<typename A, typename R, typename... P>
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class DelegatePImpl {
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public:
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using target_type = R(P...);
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protected:
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using FunPtr = target_type*;
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using FunAPtr = R(*)(A, P...);
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using FunVPPtr = R(*)(void*, P...);
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public:
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DelegatePImpl()
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{
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kind = FP;
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fn = nullptr;
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}
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DelegatePImpl(std::nullptr_t)
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{
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kind = FP;
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fn = nullptr;
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}
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DelegatePImpl(const DelegatePImpl<A, R, P...>& del)
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{
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kind = del.kind;
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if (FPA == del.kind)
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{
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fnA = del.fnA;
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obj = del.obj;
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}
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else
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{
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fn = del.fn;
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}
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}
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DelegatePImpl(DelegatePImpl<A, R, P...>&& del)
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{
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kind = del.kind;
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if (FPA == del.kind)
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{
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fnA = del.fnA;
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obj = std::move(del.obj);
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}
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else
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{
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fn = del.fn;
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}
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}
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DelegatePImpl(FunAPtr fnA, const A& obj)
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{
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kind = FPA;
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DelegatePImpl::fnA = fnA;
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this->obj = obj;
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}
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DelegatePImpl(FunAPtr fnA, A&& obj)
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{
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kind = FPA;
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DelegatePImpl::fnA = fnA;
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this->obj = std::move(obj);
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}
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DelegatePImpl(FunPtr fn)
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{
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kind = FP;
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DelegatePImpl::fn = fn;
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}
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template<typename F> DelegatePImpl(F fn)
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{
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kind = FP;
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DelegatePImpl::fn = std::forward<F>(fn);
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}
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DelegatePImpl& operator=(const DelegatePImpl<A, R, P...>& del)
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{
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if (this == &del) return *this;
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if (kind != del.kind)
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{
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if (FPA == kind)
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{
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obj = {};
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}
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kind = del.kind;
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}
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if (FPA == del.kind)
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{
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fnA = del.fnA;
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obj = del.obj;
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}
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else
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{
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fn = del.fn;
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}
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return *this;
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}
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DelegatePImpl& operator=(DelegatePImpl<A, R, P...>&& del)
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{
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if (this == &del) return *this;
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if (kind != del.kind)
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{
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if (FPA == kind)
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{
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obj = {};
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}
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kind = del.kind;
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}
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if (FPA == del.kind)
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{
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fnA = del.fnA;
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obj = std::move(del.obj);
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}
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else
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{
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fn = del.fn;
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}
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return *this;
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}
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DelegatePImpl& operator=(FunPtr fn)
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{
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if (FPA == kind)
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{
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obj = {};
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}
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kind = FP;
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this->fn = fn;
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return *this;
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}
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DelegatePImpl& IRAM_ATTR operator=(std::nullptr_t)
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{
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if (FPA == kind)
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{
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obj = {};
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}
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kind = FP;
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fn = nullptr;
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return *this;
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}
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operator bool() const
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{
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if (FP == kind)
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{
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return fn;
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}
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else
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{
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return fnA;
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}
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}
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static R IRAM_ATTR vPtrToFunAPtrExec(void* self, P... args)
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{
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return static_cast<DelegatePImpl*>(self)->fnA(
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static_cast<DelegatePImpl*>(self)->obj,
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std::forward<P...>(args...));
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};
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operator FunVPPtr() const
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{
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if (FP == kind)
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{
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return vPtrToFunPtrExec<R, P...>;
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}
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else
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{
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return vPtrToFunAPtrExec;
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}
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}
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void* arg() const
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{
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if (FP == kind)
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{
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return reinterpret_cast<void*>(fn);
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}
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else
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{
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return const_cast<DelegatePImpl*>(this);
|
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}
|
|
}
|
|
|
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R IRAM_ATTR operator()(P... args) const
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|
{
|
|
if (FP == kind)
|
|
{
|
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return fn(std::forward<P...>(args...));
|
|
}
|
|
else
|
|
{
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return fnA(obj, std::forward<P...>(args...));
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}
|
|
}
|
|
|
|
protected:
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|
enum { FP, FPA } kind;
|
|
union {
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FunPtr fn;
|
|
FunAPtr fnA;
|
|
};
|
|
A obj;
|
|
};
|
|
#endif
|
|
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
template<typename R, typename... P>
|
|
class DelegatePImpl<void, R, P...> {
|
|
public:
|
|
using target_type = R(P...);
|
|
protected:
|
|
using FunPtr = target_type*;
|
|
using FunctionType = std::function<target_type>;
|
|
using FunVPPtr = R(*)(void*, P...);
|
|
public:
|
|
DelegatePImpl()
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegatePImpl(std::nullptr_t)
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
~DelegatePImpl()
|
|
{
|
|
if (FUNC == kind)
|
|
functional.~FunctionType();
|
|
}
|
|
|
|
DelegatePImpl(const DelegatePImpl<void, R, P...>& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&functional) FunctionType(del.functional);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegatePImpl(DelegatePImpl<void, R, P...>&& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&functional) FunctionType(std::move(del.functional));
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegatePImpl(FunPtr fn)
|
|
{
|
|
kind = FP;
|
|
DelegatePImpl::fn = fn;
|
|
}
|
|
|
|
template<typename F> DelegatePImpl(F functional)
|
|
{
|
|
kind = FUNC;
|
|
new (&this->functional) FunctionType(std::forward<F>(functional));
|
|
}
|
|
|
|
DelegatePImpl& operator=(const DelegatePImpl<void, R, P...>& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (FUNC == kind && FUNC != del.kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FUNC != kind && FUNC == del.kind)
|
|
{
|
|
new (&this->functional) FunctionType();
|
|
}
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
functional = del.functional;
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegatePImpl& operator=(DelegatePImpl<void, R, P...>&& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (FUNC == kind && FUNC != del.kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FUNC != kind && FUNC == del.kind)
|
|
{
|
|
new (&this->functional) FunctionType();
|
|
}
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
functional = std::move(del.functional);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegatePImpl& operator=(FunPtr fn)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
kind = FP;
|
|
}
|
|
DelegatePImpl::fn = fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegatePImpl& IRAM_ATTR operator=(std::nullptr_t)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
kind = FP;
|
|
fn = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
operator bool() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn;
|
|
}
|
|
else
|
|
{
|
|
return functional ? true : false;
|
|
}
|
|
}
|
|
|
|
operator FunVPPtr() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return vPtrToFunPtrExec<R, P...>;
|
|
}
|
|
else
|
|
{
|
|
return [](void* self, P... args) -> R
|
|
{
|
|
return static_cast<DelegatePImpl*>(self)->functional(std::forward<P...>(args...));
|
|
};
|
|
}
|
|
}
|
|
|
|
void* arg() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return reinterpret_cast<void*>(fn);
|
|
}
|
|
else
|
|
{
|
|
return const_cast<DelegatePImpl*>(this);
|
|
}
|
|
}
|
|
|
|
operator FunctionType() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn;
|
|
}
|
|
else
|
|
{
|
|
return functional;
|
|
}
|
|
}
|
|
|
|
R IRAM_ATTR operator()(P... args) const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn(std::forward<P...>(args...));
|
|
}
|
|
else
|
|
{
|
|
return functional(std::forward<P...>(args...));
|
|
}
|
|
}
|
|
|
|
protected:
|
|
enum { FUNC, FP } kind;
|
|
union {
|
|
FunctionType functional;
|
|
FunPtr fn;
|
|
};
|
|
};
|
|
#else
|
|
template<typename R, typename... P>
|
|
class DelegatePImpl<void, R, P...> {
|
|
public:
|
|
using target_type = R(P...);
|
|
protected:
|
|
using FunPtr = target_type*;
|
|
using FunVPPtr = R(*)(void*, P...);
|
|
public:
|
|
DelegatePImpl()
|
|
{
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegatePImpl(std::nullptr_t)
|
|
{
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegatePImpl(const DelegatePImpl<void, R, P...>& del)
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
|
|
DelegatePImpl(DelegatePImpl<void, R, P...>&& del)
|
|
{
|
|
fn = std::move(del.fn);
|
|
}
|
|
|
|
DelegatePImpl(FunPtr fn)
|
|
{
|
|
DelegatePImpl::fn = fn;
|
|
}
|
|
|
|
template<typename F> DelegatePImpl(F fn)
|
|
{
|
|
DelegatePImpl::fn = std::forward<F>(fn);
|
|
}
|
|
|
|
DelegatePImpl& operator=(const DelegatePImpl<void, R, P...>& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
fn = del.fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegatePImpl& operator=(DelegatePImpl<void, R, P...>&& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
fn = std::move(del.fn);
|
|
return *this;
|
|
}
|
|
|
|
DelegatePImpl& operator=(FunPtr fn)
|
|
{
|
|
DelegatePImpl::fn = fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegatePImpl& IRAM_ATTR operator=(std::nullptr_t)
|
|
{
|
|
fn = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
operator bool() const
|
|
{
|
|
return fn;
|
|
}
|
|
|
|
operator FunVPPtr() const
|
|
{
|
|
return vPtrToFunPtrExec<R, P...>;
|
|
}
|
|
|
|
void* arg() const
|
|
{
|
|
return reinterpret_cast<void*>(fn);
|
|
}
|
|
|
|
R IRAM_ATTR operator()(P... args) const
|
|
{
|
|
return fn(std::forward<P...>(args...));
|
|
}
|
|
|
|
protected:
|
|
FunPtr fn;
|
|
};
|
|
#endif
|
|
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
template<typename A, typename R>
|
|
class DelegateImpl {
|
|
public:
|
|
using target_type = R();
|
|
protected:
|
|
using FunPtr = target_type*;
|
|
using FunAPtr = R(*)(A);
|
|
using FunctionType = std::function<target_type>;
|
|
using FunVPPtr = R(*)(void*);
|
|
public:
|
|
DelegateImpl()
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegateImpl(std::nullptr_t)
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
~DelegateImpl()
|
|
{
|
|
if (FUNC == kind)
|
|
functional.~FunctionType();
|
|
else if (FPA == kind)
|
|
obj.~A();
|
|
}
|
|
|
|
DelegateImpl(const DelegateImpl<A, R>& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&functional) FunctionType(del.functional);
|
|
}
|
|
else if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
new (&obj) A(del.obj);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegateImpl(DelegateImpl<A, R>&& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&functional) FunctionType(std::move(del.functional));
|
|
}
|
|
else if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
new (&obj) A(std::move(del.obj));
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegateImpl(FunAPtr fnA, const A& obj)
|
|
{
|
|
kind = FPA;
|
|
DelegateImpl::fnA = fnA;
|
|
new (&this->obj) A(obj);
|
|
}
|
|
|
|
DelegateImpl(FunAPtr fnA, A&& obj)
|
|
{
|
|
kind = FPA;
|
|
DelegateImpl::fnA = fnA;
|
|
new (&this->obj) A(std::move(obj));
|
|
}
|
|
|
|
DelegateImpl(FunPtr fn)
|
|
{
|
|
kind = FP;
|
|
DelegateImpl::fn = fn;
|
|
}
|
|
|
|
template<typename F> DelegateImpl(F functional)
|
|
{
|
|
kind = FUNC;
|
|
new (&this->functional) FunctionType(std::forward<F>(functional));
|
|
}
|
|
|
|
DelegateImpl& operator=(const DelegateImpl<A, R>& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (kind != del.kind)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
obj.~A();
|
|
}
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&this->functional) FunctionType();
|
|
}
|
|
else if (FPA == del.kind)
|
|
{
|
|
new (&obj) A;
|
|
}
|
|
kind = del.kind;
|
|
}
|
|
if (FUNC == del.kind)
|
|
{
|
|
functional = del.functional;
|
|
}
|
|
else if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
obj = del.obj;
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(DelegateImpl<A, R>&& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (kind != del.kind)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
obj.~A();
|
|
}
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&this->functional) FunctionType();
|
|
}
|
|
else if (FPA == del.kind)
|
|
{
|
|
new (&obj) A;
|
|
}
|
|
kind = del.kind;
|
|
}
|
|
if (FUNC == del.kind)
|
|
{
|
|
functional = std::move(del.functional);
|
|
}
|
|
else if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
obj = std::move(del.obj);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(FunPtr fn)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
obj.~A();
|
|
}
|
|
kind = FP;
|
|
this->fn = fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& IRAM_ATTR operator=(std::nullptr_t)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
obj.~A();
|
|
}
|
|
kind = FP;
|
|
fn = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
operator bool() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn;
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
return fnA;
|
|
}
|
|
else
|
|
{
|
|
return functional ? true : false;
|
|
}
|
|
}
|
|
|
|
static R IRAM_ATTR vPtrToFunAPtrExec(void* self)
|
|
{
|
|
return static_cast<DelegateImpl*>(self)->fnA(
|
|
static_cast<DelegateImpl*>(self)->obj);
|
|
};
|
|
|
|
operator FunVPPtr() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return reinterpret_cast<FunVPPtr>(fn);
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
return vPtrToFunAPtrExec;
|
|
}
|
|
else
|
|
{
|
|
return [](void* self) -> R
|
|
{
|
|
return static_cast<DelegateImpl*>(self)->functional();
|
|
};
|
|
}
|
|
}
|
|
|
|
void* arg() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return nullptr;
|
|
}
|
|
else
|
|
{
|
|
return const_cast<DelegateImpl*>(this);
|
|
}
|
|
}
|
|
|
|
operator FunctionType() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn;
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
return [this]() { return fnA(obj); };
|
|
}
|
|
else
|
|
{
|
|
return functional;
|
|
}
|
|
}
|
|
|
|
R IRAM_ATTR operator()() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn();
|
|
}
|
|
else if (FPA == kind)
|
|
{
|
|
return fnA(obj);
|
|
}
|
|
else
|
|
{
|
|
return functional();
|
|
}
|
|
}
|
|
|
|
protected:
|
|
enum { FUNC, FP, FPA } kind;
|
|
union {
|
|
FunctionType functional;
|
|
FunPtr fn;
|
|
struct {
|
|
FunAPtr fnA;
|
|
A obj;
|
|
};
|
|
};
|
|
};
|
|
#else
|
|
template<typename A, typename R>
|
|
class DelegateImpl {
|
|
public:
|
|
using target_type = R();
|
|
protected:
|
|
using FunPtr = target_type*;
|
|
using FunAPtr = R(*)(A);
|
|
using FunVPPtr = R(*)(void*);
|
|
public:
|
|
DelegateImpl()
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegateImpl(std::nullptr_t)
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegateImpl(const DelegateImpl<A, R>& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
obj = del.obj;
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegateImpl(DelegateImpl<A, R>&& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
obj = std::move(del.obj);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegateImpl(FunAPtr fnA, const A& obj)
|
|
{
|
|
kind = FPA;
|
|
DelegateImpl::fnA = fnA;
|
|
this->obj = obj;
|
|
}
|
|
|
|
DelegateImpl(FunAPtr fnA, A&& obj)
|
|
{
|
|
kind = FPA;
|
|
DelegateImpl::fnA = fnA;
|
|
this->obj = std::move(obj);
|
|
}
|
|
|
|
DelegateImpl(FunPtr fn)
|
|
{
|
|
kind = FP;
|
|
DelegateImpl::fn = fn;
|
|
}
|
|
|
|
template<typename F> DelegateImpl(F fn)
|
|
{
|
|
kind = FP;
|
|
DelegateImpl::fn = std::forward<F>(fn);
|
|
}
|
|
|
|
DelegateImpl& operator=(const DelegateImpl<A, R>& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (kind != del.kind)
|
|
{
|
|
if (FPA == kind)
|
|
{
|
|
obj = {};
|
|
}
|
|
kind = del.kind;
|
|
}
|
|
if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
obj = del.obj;
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(DelegateImpl<A, R>&& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (kind != del.kind)
|
|
{
|
|
if (FPA == kind)
|
|
{
|
|
obj = {};
|
|
}
|
|
kind = del.kind;
|
|
}
|
|
if (FPA == del.kind)
|
|
{
|
|
fnA = del.fnA;
|
|
obj = std::move(del.obj);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(FunPtr fn)
|
|
{
|
|
if (FPA == kind)
|
|
{
|
|
obj = {};
|
|
}
|
|
kind = FP;
|
|
this->fn = fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& IRAM_ATTR operator=(std::nullptr_t)
|
|
{
|
|
if (FPA == kind)
|
|
{
|
|
obj = {};
|
|
}
|
|
kind = FP;
|
|
fn = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
operator bool() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn;
|
|
}
|
|
else
|
|
{
|
|
return fnA;
|
|
}
|
|
}
|
|
|
|
static R IRAM_ATTR vPtrToFunAPtrExec(void* self)
|
|
{
|
|
return static_cast<DelegateImpl*>(self)->fnA(
|
|
static_cast<DelegateImpl*>(self)->obj);
|
|
};
|
|
|
|
operator FunVPPtr() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return reinterpret_cast<FunVPPtr>(fn);
|
|
}
|
|
else
|
|
{
|
|
return vPtrToFunAPtrExec;
|
|
}
|
|
}
|
|
|
|
void* arg() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return nullptr;
|
|
}
|
|
else
|
|
{
|
|
return const_cast<DelegateImpl*>(this);
|
|
}
|
|
}
|
|
|
|
R IRAM_ATTR operator()() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn();
|
|
}
|
|
else
|
|
{
|
|
return fnA(obj);
|
|
}
|
|
}
|
|
|
|
protected:
|
|
enum { FP, FPA } kind;
|
|
union {
|
|
FunPtr fn;
|
|
FunAPtr fnA;
|
|
};
|
|
A obj;
|
|
};
|
|
#endif
|
|
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
template<typename R>
|
|
class DelegateImpl<void, R> {
|
|
public:
|
|
using target_type = R();
|
|
protected:
|
|
using FunPtr = target_type*;
|
|
using FunctionType = std::function<target_type>;
|
|
using FunVPPtr = R(*)(void*);
|
|
public:
|
|
DelegateImpl()
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegateImpl(std::nullptr_t)
|
|
{
|
|
kind = FP;
|
|
fn = nullptr;
|
|
}
|
|
|
|
~DelegateImpl()
|
|
{
|
|
if (FUNC == kind)
|
|
functional.~FunctionType();
|
|
}
|
|
|
|
DelegateImpl(const DelegateImpl<void, R>& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&functional) FunctionType(del.functional);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegateImpl(DelegateImpl<void, R>&& del)
|
|
{
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
new (&functional) FunctionType(std::move(del.functional));
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
}
|
|
|
|
DelegateImpl(FunPtr fn)
|
|
{
|
|
kind = FP;
|
|
DelegateImpl::fn = fn;
|
|
}
|
|
|
|
template<typename F> DelegateImpl(F functional)
|
|
{
|
|
kind = FUNC;
|
|
new (&this->functional) FunctionType(std::forward<F>(functional));
|
|
}
|
|
|
|
DelegateImpl& operator=(const DelegateImpl<void, R>& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (FUNC == kind && FUNC != del.kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FUNC != kind && FUNC == del.kind)
|
|
{
|
|
new (&this->functional) FunctionType();
|
|
}
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
functional = del.functional;
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(DelegateImpl<void, R>&& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
if (FUNC == kind && FUNC != del.kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
else if (FUNC != kind && FUNC == del.kind)
|
|
{
|
|
new (&this->functional) FunctionType();
|
|
}
|
|
kind = del.kind;
|
|
if (FUNC == del.kind)
|
|
{
|
|
functional = std::move(del.functional);
|
|
}
|
|
else
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(FunPtr fn)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
kind = FP;
|
|
}
|
|
DelegateImpl::fn = fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& IRAM_ATTR operator=(std::nullptr_t)
|
|
{
|
|
if (FUNC == kind)
|
|
{
|
|
functional.~FunctionType();
|
|
}
|
|
kind = FP;
|
|
fn = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
operator bool() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn;
|
|
}
|
|
else
|
|
{
|
|
return functional ? true : false;
|
|
}
|
|
}
|
|
|
|
operator FunVPPtr() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return reinterpret_cast<FunVPPtr>(fn);
|
|
}
|
|
else
|
|
{
|
|
return [](void* self) -> R
|
|
{
|
|
return static_cast<DelegateImpl*>(self)->functional();
|
|
};
|
|
}
|
|
}
|
|
|
|
void* arg() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return nullptr;
|
|
}
|
|
else
|
|
{
|
|
return const_cast<DelegateImpl*>(this);
|
|
}
|
|
}
|
|
|
|
operator FunctionType() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn;
|
|
}
|
|
else
|
|
{
|
|
return functional;
|
|
}
|
|
}
|
|
|
|
R IRAM_ATTR operator()() const
|
|
{
|
|
if (FP == kind)
|
|
{
|
|
return fn();
|
|
}
|
|
else
|
|
{
|
|
return functional();
|
|
}
|
|
}
|
|
|
|
protected:
|
|
enum { FUNC, FP } kind;
|
|
union {
|
|
FunctionType functional;
|
|
FunPtr fn;
|
|
};
|
|
};
|
|
#else
|
|
template<typename R>
|
|
class DelegateImpl<void, R> {
|
|
public:
|
|
using target_type = R();
|
|
protected:
|
|
using FunPtr = target_type*;
|
|
using FunVPPtr = R(*)(void*);
|
|
public:
|
|
DelegateImpl()
|
|
{
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegateImpl(std::nullptr_t)
|
|
{
|
|
fn = nullptr;
|
|
}
|
|
|
|
DelegateImpl(const DelegateImpl<void, R>& del)
|
|
{
|
|
fn = del.fn;
|
|
}
|
|
|
|
DelegateImpl(DelegateImpl<void, R>&& del)
|
|
{
|
|
fn = std::move(del.fn);
|
|
}
|
|
|
|
DelegateImpl(FunPtr fn)
|
|
{
|
|
DelegateImpl::fn = fn;
|
|
}
|
|
|
|
template<typename F> DelegateImpl(F fn)
|
|
{
|
|
DelegateImpl::fn = std::forward<F>(fn);
|
|
}
|
|
|
|
DelegateImpl& operator=(const DelegateImpl<void, R>& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
fn = del.fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(DelegateImpl<void, R>&& del)
|
|
{
|
|
if (this == &del) return *this;
|
|
fn = std::move(del.fn);
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& operator=(FunPtr fn)
|
|
{
|
|
DelegateImpl::fn = fn;
|
|
return *this;
|
|
}
|
|
|
|
DelegateImpl& IRAM_ATTR operator=(std::nullptr_t)
|
|
{
|
|
fn = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
operator bool() const
|
|
{
|
|
return fn;
|
|
}
|
|
|
|
operator FunVPPtr() const
|
|
{
|
|
return reinterpret_cast<FunVPPtr>(fn);
|
|
}
|
|
|
|
void* arg() const
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
R IRAM_ATTR operator()() const
|
|
{
|
|
return fn();
|
|
}
|
|
|
|
protected:
|
|
FunPtr fn;
|
|
};
|
|
#endif
|
|
|
|
template<typename R = void, typename A = void, typename... P>
|
|
class Delegate : private detail::DelegatePImpl<A, R, P...>
|
|
{
|
|
private:
|
|
using typename detail::DelegatePImpl<A, R, P...>::FunVPPtr;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using typename detail::DelegatePImpl<A, R, P...>::FunctionType;
|
|
#endif
|
|
public:
|
|
using detail::DelegatePImpl<A, R, P...>::target_type;
|
|
using detail::DelegatePImpl<A, R, P...>::DelegatePImpl;
|
|
using detail::DelegatePImpl<A, R, P...>::operator=;
|
|
using detail::DelegatePImpl<A, R, P...>::operator bool;
|
|
using detail::DelegatePImpl<A, R, P...>::operator FunVPPtr;
|
|
using detail::DelegatePImpl<A, R, P...>::arg;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using detail::DelegatePImpl<A, R, P...>::operator FunctionType;
|
|
#endif
|
|
using detail::DelegatePImpl<A, R, P...>::operator();
|
|
};
|
|
|
|
template<typename R, typename A, typename... P>
|
|
class Delegate<R, A*, P...> : private detail::DelegatePImpl<A*, R, P...>
|
|
{
|
|
private:
|
|
using typename detail::DelegatePImpl<A*, R, P...>::FunVPPtr;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using typename detail::DelegatePImpl<A*, R, P...>::FunctionType;
|
|
#endif
|
|
public:
|
|
using detail::DelegatePImpl<A*, R, P...>::target_type;
|
|
using detail::DelegatePImpl<A*, R, P...>::DelegatePImpl;
|
|
using detail::DelegatePImpl<A*, R, P...>::operator=;
|
|
using detail::DelegatePImpl<A*, R, P...>::operator bool;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using detail::DelegatePImpl<A*, R, P...>::operator FunctionType;
|
|
#endif
|
|
using detail::DelegatePImpl<A*, R, P...>::operator();
|
|
operator FunVPPtr() const
|
|
{
|
|
if (detail::DelegatePImpl<A*, R, P...>::FPA == detail::DelegatePImpl<A*, R, P...>::kind)
|
|
{
|
|
return reinterpret_cast<R(*)(void*, P...)>(detail::DelegatePImpl<A*, R, P...>::fnA);
|
|
}
|
|
else
|
|
{
|
|
return detail::DelegatePImpl<A*, R, P...>::operator FunVPPtr();
|
|
}
|
|
}
|
|
void* arg() const
|
|
{
|
|
if (detail::DelegatePImpl<A*, R, P...>::FPA == detail::DelegatePImpl<A*, R, P...>::kind)
|
|
{
|
|
return detail::DelegatePImpl<A*, R, P...>::obj;
|
|
}
|
|
else
|
|
{
|
|
return detail::DelegatePImpl<A*, R, P...>::arg();
|
|
}
|
|
}
|
|
};
|
|
|
|
template<typename R, typename A>
|
|
class Delegate<R, A> : private detail::DelegateImpl<A, R>
|
|
{
|
|
private:
|
|
using typename detail::DelegateImpl<A, R>::FunVPPtr;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using typename detail::DelegateImpl<A, R>::FunctionType;
|
|
#endif
|
|
public:
|
|
using detail::DelegateImpl<A, R>::target_type;
|
|
using detail::DelegateImpl<A, R>::DelegateImpl;
|
|
using detail::DelegateImpl<A, R>::operator=;
|
|
using detail::DelegateImpl<A, R>::operator bool;
|
|
using detail::DelegateImpl<A, R>::operator FunVPPtr;
|
|
using detail::DelegateImpl<A, R>::arg;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using detail::DelegateImpl<A, R>::operator FunctionType;
|
|
#endif
|
|
using detail::DelegateImpl<A, R>::operator();
|
|
};
|
|
|
|
template<typename R, typename A>
|
|
class Delegate<R, A*> : private detail::DelegateImpl<A*, R>
|
|
{
|
|
private:
|
|
using typename detail::DelegateImpl<A*, R>::FunVPPtr;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using typename detail::DelegateImpl<A*, R>::FunctionType;
|
|
#endif
|
|
public:
|
|
using detail::DelegateImpl<A*, R>::target_type;
|
|
using detail::DelegateImpl<A*, R>::DelegateImpl;
|
|
using detail::DelegateImpl<A*, R>::operator=;
|
|
using detail::DelegateImpl<A*, R>::operator bool;
|
|
#if !defined(ARDUINO) || defined(ESP8266) || defined(ESP32)
|
|
using detail::DelegateImpl<A*, R>::operator FunctionType;
|
|
#endif
|
|
using detail::DelegateImpl<A*, R>::operator();
|
|
operator FunVPPtr() const
|
|
{
|
|
if (detail::DelegateImpl<A*, R>::FPA == detail::DelegateImpl<A*, R>::kind)
|
|
{
|
|
return reinterpret_cast<R(*)(void*)>(detail::DelegateImpl<A*, R>::fnA);
|
|
}
|
|
else
|
|
{
|
|
return detail::DelegateImpl<A*, R>::operator FunVPPtr();
|
|
}
|
|
}
|
|
void* arg() const
|
|
{
|
|
if (detail::DelegateImpl<A*, R>::FPA == detail::DelegateImpl<A*, R>::kind)
|
|
{
|
|
return detail::DelegateImpl<A*, R>::obj;
|
|
}
|
|
else
|
|
{
|
|
return detail::DelegateImpl<A*, R>::arg();
|
|
}
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
template<typename R, typename A = void, typename... P> class Delegate;
|
|
template<typename R, typename A, typename... P> class Delegate<R(P...), A> : public detail::Delegate<R, A, P...>
|
|
{
|
|
public:
|
|
using detail::Delegate<R, A, P...>::Delegate;
|
|
};
|
|
template<typename R, typename... P> class Delegate<R(P...)> : public detail::Delegate<R, void, P...>
|
|
{
|
|
public:
|
|
using detail::Delegate<R, void, P...>::Delegate;
|
|
};
|
|
|
|
#endif // __Delegate_h
|