+++ /dev/null
-/*
-Copyright (C) 2001-2006, William Joseph.
-All Rights Reserved.
-
-This file is part of GtkRadiant.
-
-GtkRadiant is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-GtkRadiant is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GtkRadiant; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#if !defined(INCLUDED_GENERIC_CLOSURE_H)
-#define INCLUDED_GENERIC_CLOSURE_H
-
-/// \file
-/// \brief Type-safe techniques for binding the first argument of an opaque callback.
-
-#include <cstddef>
-#include "functional.h"
-#include "callbackfwd.h"
-
-template<typename Type>
-inline void* convertToOpaque(Type* t)
-{
- return t;
-}
-template<typename Type>
-inline void* convertToOpaque(const Type* t)
-{
- return const_cast<Type*>(t);
-}
-template<typename Type>
-inline void* convertToOpaque(Type& t)
-{
- return &t;
-}
-template<typename Type>
-inline void* convertToOpaque(const Type& t)
-{
- return const_cast<Type*>(&t);
-}
-
-
-template<typename Type>
-class ConvertFromOpaque
-{
-};
-
-template<typename Type>
-class ConvertFromOpaque<Type&>
-{
-public:
- static Type& apply(void* p)
- {
- return *static_cast<Type*>(p);
- }
-};
-
-template<typename Type>
-class ConvertFromOpaque<const Type&>
-{
-public:
- static const Type& apply(void* p)
- {
- return *static_cast<Type*>(p);
- }
-};
-
-
-template<typename Type>
-class ConvertFromOpaque<Type*>
-{
-public:
- static Type* apply(void* p)
- {
- return static_cast<Type*>(p);
- }
-};
-
-template<typename Type>
-class ConvertFromOpaque<const Type*>
-{
-public:
- static const Type* apply(void* p)
- {
- return static_cast<Type*>(p);
- }
-};
-
-template<typename Caller>
-class BindFirstOpaque
-{
- typedef typename Caller::first_argument_type FirstBound;
- FirstBound firstBound;
-public:
- typedef typename Caller::result_type result_type;
- explicit BindFirstOpaque(FirstBound firstBound) : firstBound(firstBound)
- {
- }
- result_type operator()() const
- {
- return Caller::call(firstBound);
- }
- FirstBound getBound() const
- {
- return firstBound;
- }
- static result_type thunk(void* environment)
- {
- return Caller::call(ConvertFromOpaque<FirstBound>::apply(environment));
- }
- void* getEnvironment() const
- {
- return convertToOpaque(firstBound);
- }
-};
-
-template<typename Caller>
-class BindFirstOpaque1
-{
- typedef typename Caller::first_argument_type FirstBound;
- FirstBound firstBound;
-public:
- typedef typename Caller::second_argument_type first_argument_type;
- typedef typename Caller::result_type result_type;
- explicit BindFirstOpaque1(FirstBound firstBound) : firstBound(firstBound)
- {
- }
- result_type operator()(first_argument_type a1) const
- {
- return Caller::call(firstBound, a1);
- }
- FirstBound getBound() const
- {
- return firstBound;
- }
- static result_type thunk(void* environment, first_argument_type a1)
- {
- return Caller::call(ConvertFromOpaque<FirstBound>::apply(environment), a1);
- }
- void* getEnvironment() const
- {
- return convertToOpaque(firstBound);
- }
-};
-
-template<typename Caller>
-class BindFirstOpaque2
-{
- typedef typename Caller::first_argument_type FirstBound;
- FirstBound firstBound;
-public:
- typedef typename Caller::second_argument_type first_argument_type;
- typedef typename Caller::third_argument_type second_argument_type;
- typedef typename Caller::result_type result_type;
- explicit BindFirstOpaque2(FirstBound firstBound) : firstBound(firstBound)
- {
- }
- result_type operator()(first_argument_type a1, second_argument_type a2) const
- {
- return Caller::call(firstBound, a1, a2);
- }
- FirstBound getBound() const
- {
- return firstBound;
- }
- static result_type thunk(void* environment, first_argument_type a1, second_argument_type a2)
- {
- return Caller::call(ConvertFromOpaque<FirstBound>::apply(environment), a1, a2);
- }
- void* getEnvironment() const
- {
- return convertToOpaque(firstBound);
- }
-};
-
-template<typename Caller>
-class BindFirstOpaque3
-{
- typedef typename Caller::first_argument_type FirstBound;
- FirstBound firstBound;
-public:
- typedef typename Caller::second_argument_type first_argument_type;
- typedef typename Caller::third_argument_type second_argument_type;
- typedef typename Caller::fourth_argument_type third_argument_type;
- typedef typename Caller::result_type result_type;
- explicit BindFirstOpaque3(FirstBound firstBound) : firstBound(firstBound)
- {
- }
- result_type operator()(first_argument_type a1, second_argument_type a2, third_argument_type a3) const
- {
- return Caller::call(firstBound, a1, a2, a3);
- }
- FirstBound getBound() const
- {
- return firstBound;
- }
- static result_type thunk(void* environment, first_argument_type a1, second_argument_type a2, third_argument_type a3)
- {
- return Caller::call(ConvertFromOpaque<FirstBound>::apply(environment), a1, a2, a3);
- }
- void* getEnvironment() const
- {
- return convertToOpaque(firstBound);
- }
-};
-
-template<typename Thunk_>
-class CallbackBase
-{
- void* m_environment;
- Thunk_ m_thunk;
-public:
- typedef Thunk_ Thunk;
- CallbackBase(void* environment, Thunk function) : m_environment(environment), m_thunk(function)
- {
- }
- void* getEnvironment() const
- {
- return m_environment;
- }
- Thunk getThunk() const
- {
- return m_thunk;
- }
-};
-
-template<typename Thunk>
-inline bool operator==(const CallbackBase<Thunk>& self, const CallbackBase<Thunk>& other)
-{
- return self.getEnvironment() == other.getEnvironment() && self.getThunk() == other.getThunk();
-}
-template<typename Thunk>
-inline bool operator!=(const CallbackBase<Thunk>& self, const CallbackBase<Thunk>& other)
-{
- return !(self == other);
-}
-template<typename Thunk>
-inline bool operator<(const CallbackBase<Thunk>& self, const CallbackBase<Thunk>& other)
-{
- return self.getEnvironment() < other.getEnvironment() ||
- (!(other.getEnvironment() < self.getEnvironment()) && self.getThunk() < other.getThunk());
-}
-
-
-/// \brief Combines a void pointer with a pointer to a function which operates on a void pointer.
-///
-/// Use with the callback constructors MemberCaller, ConstMemberCaller, ReferenceCaller, ConstReferenceCaller, PointerCaller, ConstPointerCaller and FreeCaller.
-template<typename Result>
-class Callback0 : public CallbackBase<Result (*)(void*)>
-{
- typedef CallbackBase<Result (*)(void*)> Base;
- static Result nullThunk(void*)
- {
- }
-
-public:
- typedef Result result_type;
-
- Callback0() : Base(0, nullThunk)
- {
- }
- template<typename Caller>
- Callback0(const BindFirstOpaque<Caller>& caller) : Base(caller.getEnvironment(), BindFirstOpaque<Caller>::thunk)
- {
- }
- Callback0(void* environment, typename Base::Thunk function) : Base(environment, function)
- {
- }
- result_type operator()() const
- {
- return Base::getThunk()(Base::getEnvironment());
- }
-};
-
-template<typename Caller>
-inline Callback0<typename Caller::result_type> makeCallback0(const Caller& caller, typename Caller::first_argument_type callee)
-{
- return Callback0<typename Caller::result_type>(BindFirstOpaque<Caller>(callee));
-}
-template<typename Caller>
-inline Callback0<typename Caller::result_type> makeStatelessCallback0(const Caller& caller)
-{
- return makeCallback0(Caller0To1<Caller>(), 0);
-}
-
-typedef Callback0<void> Callback;
-
-
-
-/// \brief Combines a void pointer with a pointer to a function which operates on a void pointer and one other argument.
-///
-/// Use with the callback constructors MemberCaller1, ConstMemberCaller1, ReferenceCaller1, ConstReferenceCaller1, PointerCaller1, ConstPointerCaller1 and FreeCaller1.
-template<typename FirstArgument, typename Result>
-class Callback1 : public CallbackBase<Result (*)(void*, FirstArgument)>
-{
- typedef CallbackBase<Result (*)(void*, FirstArgument)> Base;
- static Result nullThunk(void*, FirstArgument)
- {
- }
-
-public:
- typedef FirstArgument first_argument_type;
- typedef Result result_type;
-
- Callback1() : Base(0, nullThunk)
- {
- }
- template<typename Caller>
- Callback1(const BindFirstOpaque1<Caller>& caller) : Base(caller.getEnvironment(), BindFirstOpaque1<Caller>::thunk)
- {
- }
- Callback1(void* environment, typename Base::Thunk function) : Base(environment, function)
- {
- }
- result_type operator()(FirstArgument firstArgument) const
- {
- return Base::getThunk()(Base::getEnvironment(), firstArgument);
- }
-};
-
-template<typename Caller>
-inline Callback1<typename Caller::second_argument_type, typename Caller::result_type> makeCallback1(const Caller& caller, typename Caller::first_argument_type callee)
-{
- return Callback1<typename Caller::second_argument_type, typename Caller::result_type>(BindFirstOpaque1<Caller>(callee));
-}
-template<typename Caller>
-inline Callback1<typename Caller::second_argument_type, typename Caller::result_type> makeStatelessCallback1(const Caller& caller)
-{
- return makeCallback1(Caller1To2<Caller>(), 0);
-}
-
-
-/// \brief Combines a void pointer with a pointer to a function which operates on a void pointer and two other arguments.
-///
-template<typename FirstArgument, typename SecondArgument, typename Result>
-class Callback2 : public CallbackBase<Result (*)(void*, FirstArgument, SecondArgument)>
-{
- typedef CallbackBase<Result (*)(void*, FirstArgument, SecondArgument)> Base;
- static Result nullThunk(void*, FirstArgument, SecondArgument)
- {
- }
-
-public:
- typedef FirstArgument first_argument_type;
- typedef SecondArgument second_argument_type;
- typedef Result result_type;
-
- Callback2() : Base(0, nullThunk)
- {
- }
- template<typename Caller>
- Callback2(const BindFirstOpaque2<Caller>& caller) : Base(caller.getEnvironment(), BindFirstOpaque2<Caller>::thunk)
- {
- }
- Callback2(void* environment, typename Base::Thunk function) : Base(environment, function)
- {
- }
- result_type operator()(FirstArgument firstArgument, SecondArgument secondArgument) const
- {
- return Base::getThunk()(Base::getEnvironment(), firstArgument, secondArgument);
- }
-};
-
-template<typename Caller>
-inline Callback2<
- typename Caller::second_argument_type,
- typename Caller::third_argument_type,
- typename Caller::result_type
-> makeCallback2(const Caller& caller, typename Caller::first_argument_type callee)
-{
- return Callback2<
- typename Caller::second_argument_type,
- typename Caller::third_argument_type,
- typename Caller::result_type
- >(BindFirstOpaque2<Caller>(callee));
-}
-template<typename Caller>
-inline Callback2<
- typename Caller::first_argument_type,
- typename Caller::second_argument_type,
- typename Caller::result_type
-> makeStatelessCallback2(const Caller& caller)
-{
- return makeCallback2(Caller2To3<Caller>(), 0);
-}
-
-
-/// \brief Combines a void pointer with a pointer to a function which operates on a void pointer and three other arguments.
-///
-template<typename FirstArgument, typename SecondArgument, typename ThirdArgument, typename Result>
-class Callback3 : public CallbackBase<Result (*)(void*, FirstArgument, SecondArgument, ThirdArgument)>
-{
- typedef CallbackBase<Result (*)(void*, FirstArgument, SecondArgument, ThirdArgument)> Base;
- static Result nullThunk(void*, FirstArgument, SecondArgument, ThirdArgument)
- {
- }
-
-public:
- typedef FirstArgument first_argument_type;
- typedef SecondArgument second_argument_type;
- typedef ThirdArgument third_argument_type;
- typedef Result result_type;
-
- Callback3() : Base(0, nullThunk)
- {
- }
- template<typename Caller>
- Callback3(const BindFirstOpaque3<Caller>& caller) : Base(caller.getEnvironment(), BindFirstOpaque3<Caller>::thunk)
- {
- }
- Callback3(void* environment, typename Base::Thunk function) : Base(environment, function)
- {
- }
- result_type operator()(FirstArgument firstArgument, SecondArgument secondArgument, ThirdArgument thirdArgument) const
- {
- return Base::getThunk()(Base::getEnvironment(), firstArgument, secondArgument, thirdArgument);
- }
-};
-
-template<typename Caller>
-inline Callback3<
- typename Caller::second_argument_type,
- typename Caller::third_argument_type,
- typename Caller::fourth_argument_type,
- typename Caller::result_type
-> makeCallback3(const Caller& caller, typename Caller::first_argument_type callee)
-{
- return Callback3<
- typename Caller::second_argument_type,
- typename Caller::third_argument_type,
- typename Caller::fourth_argument_type,
- typename Caller::result_type
- >(BindFirstOpaque3<Caller>(callee));
-}
-template<typename Caller>
-inline Callback3<
- typename Caller::first_argument_type,
- typename Caller::second_argument_type,
- typename Caller::third_argument_type,
- typename Caller::result_type
-> makeStatelessCallback3(const Caller& caller)
-{
- return makeCallback3(Caller3To4<Caller>(), 0);
-}
-
-
-/// \brief Forms a Callback from a non-const Environment reference and a non-const Environment member-function.
-///
-/// \dontinclude generic/callback.cpp
-/// \skipline MemberCaller example
-/// \until end example
-template<typename Environment, void (Environment::*member)()>
-class MemberCaller : public BindFirstOpaque< Member<Environment, void, member> >
-{
-public:
- MemberCaller(Environment& environment) : BindFirstOpaque< Member<Environment, void, member> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a const Environment reference and a const Environment member-function.
-///
-/// \dontinclude generic/callback.cpp
-/// \skipline MemberCaller example
-/// \until end example
-template<typename Environment, void (Environment::*member)() const>
-class ConstMemberCaller : public BindFirstOpaque< ConstMember<Environment, void, member> >
-{
-public:
- ConstMemberCaller(const Environment& environment) : BindFirstOpaque< ConstMember<Environment, void, member> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a non-const Environment reference and a const Environment member-function which takes one argument.
-template<typename Environment, typename FirstArgument, void (Environment::*member)(FirstArgument)>
-class MemberCaller1 : public BindFirstOpaque1< Member1<Environment, FirstArgument, void, member> >
-{
-public:
- MemberCaller1(Environment& environment) : BindFirstOpaque1< Member1<Environment, FirstArgument, void, member> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a const Environment reference and a const Environment member-function which takes one argument.
-template<typename Environment, typename FirstArgument, void (Environment::*member)(FirstArgument) const>
-class ConstMemberCaller1 : public BindFirstOpaque1< ConstMember1<Environment, FirstArgument, void, member> >
-{
-public:
- ConstMemberCaller1(const Environment& environment) : BindFirstOpaque1< ConstMember1<Environment, FirstArgument, void, member> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a non-const Environment reference and a free function which operates on a non-const Environment reference.
-///
-/// \dontinclude generic/callback.cpp
-/// \skipline ReferenceCaller example
-/// \until end example
-template<typename Environment, void (*func)(Environment&)>
-class ReferenceCaller : public BindFirstOpaque< Function1<Environment&, void, func> >
-{
-public:
- ReferenceCaller(Environment& environment) : BindFirstOpaque< Function1<Environment&, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a const Environment reference and a free function which operates on a const Environment reference.
-///
-/// \dontinclude generic/callback.cpp
-/// \skipline ReferenceCaller example
-/// \until end example
-template<typename Environment, void (*func)(const Environment&)>
-class ConstReferenceCaller : public BindFirstOpaque< Function1<const Environment&, void, func> >
-{
-public:
- ConstReferenceCaller(const Environment& environment) : BindFirstOpaque< Function1<const Environment&, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a non-const Environment reference and a free function which operates on a non-const Environment reference and one other argument.
-template<typename Environment, typename FirstArgument, void (*func)(Environment&, FirstArgument)>
-class ReferenceCaller1 : public BindFirstOpaque1< Function2<Environment&, FirstArgument, void, func> >
-{
-public:
- ReferenceCaller1(Environment& environment) : BindFirstOpaque1< Function2<Environment&, FirstArgument, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a const Environment reference and a free function which operates on a const Environment reference and one other argument.
-template<typename Environment, typename FirstArgument, void (*func)(const Environment&, FirstArgument)>
-class ConstReferenceCaller1 : public BindFirstOpaque1< Function2<const Environment&, FirstArgument, void, func> >
-{
-public:
- ConstReferenceCaller1(const Environment& environment) : BindFirstOpaque1< Function2<const Environment&, FirstArgument, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a non-const Environment pointer and a free function which operates on a non-const Environment pointer.
-template<typename Environment, void (*func)(Environment*)>
-class PointerCaller : public BindFirstOpaque< Function1<Environment*, void, func> >
-{
-public:
- PointerCaller(Environment* environment) : BindFirstOpaque< Function1<Environment*, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a const Environment pointer and a free function which operates on a const Environment pointer.
-template<typename Environment, void (*func)(const Environment*)>
-class ConstPointerCaller : public BindFirstOpaque< Function1<const Environment*, void, func> >
-{
-public:
- ConstPointerCaller(const Environment* environment) : BindFirstOpaque< Function1<const Environment*, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a non-const Environment pointer and a free function which operates on a non-const Environment pointer and one other argument.
-template<typename Environment, typename FirstArgument, void (*func)(Environment*, FirstArgument)>
-class PointerCaller1 : public BindFirstOpaque1< Function2<Environment*, FirstArgument, void, func> >
-{
-public:
- PointerCaller1(Environment* environment) : BindFirstOpaque1< Function2<Environment*, FirstArgument, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a const Environment pointer and a free function which operates on a const Environment pointer and one other argument.
-template<typename Environment, typename FirstArgument, void (*func)(const Environment*, FirstArgument)>
-class ConstPointerCaller1 : public BindFirstOpaque1< Function2<const Environment*, FirstArgument, void, func> >
-{
-public:
- ConstPointerCaller1(const Environment* environment) : BindFirstOpaque1< Function2<const Environment*, FirstArgument, void, func> >(environment)
- {
- }
-};
-
-/// \brief Forms a Callback from a free function which takes no arguments.
-template<void (*func)()>
-class FreeCaller : public BindFirstOpaque< Caller0To1< Function0<void, func> > >
-{
-public:
- FreeCaller() : BindFirstOpaque< Caller0To1< Function0<void, func> > >(0)
- {
- }
-};
-
-/// \brief Forms a Callback from a free function which takes a single argument.
-template<typename FirstArgument, void (*func)(FirstArgument)>
-class FreeCaller1 : public BindFirstOpaque1< Caller1To2< Function1<FirstArgument, void, func> > >
-{
-public:
- FreeCaller1() : BindFirstOpaque1< Caller1To2< Function1<FirstArgument, void, func> > >(0)
- {
- }
-};
-
-
-/// \brief Constructs a Callback from a non-const \p functor with zero arguments.
-///
-/// \param Functor Must define \c operator()().
-template<typename Functor>
-inline Callback makeCallback(Functor& functor)
-{
- return Callback(MemberCaller<Functor, &Functor::operator()>(functor));
-}
-
-/// \brief Constructs a Callback from a const \p functor with zero arguments.
-///
-/// \param Functor Must define const \c operator()().
-template<typename Functor>
-inline Callback makeCallback(const Functor& functor)
-{
- return Callback(ConstMemberCaller<Functor, &Functor::operator()>(functor));
-}
-
-/// \brief Constructs a Callback1 from a non-const \p functor with one argument.
-///
-/// \param Functor Must define \c first_argument_type and \c operator()(first_argument_type).
-template<typename Functor>
-inline Callback1<typename Functor::first_argument_type> makeCallback1(Functor& functor)
-{
- typedef typename Functor::first_argument_type FirstArgument;
- return Callback1<FirstArgument>(MemberCaller1<Functor, FirstArgument, &Functor::operator()>(functor));
-}
-
-/// \brief Constructs a Callback1 from a const \p functor with one argument.
-///
-/// \param Functor Must define \c first_argument_type and const \c operator()(first_argument_type).
-template<typename Functor>
-inline Callback1<typename Functor::first_argument_type> makeCallback1(const Functor& functor)
-{
- typedef typename Functor::first_argument_type FirstArgument;
- return Callback1<FirstArgument>(ConstMemberCaller1<Functor, FirstArgument, &Functor::operator()>(functor));
-}
-
-
-typedef Callback1<bool> BoolImportCallback;
-typedef Callback1<const BoolImportCallback&> BoolExportCallback;
-
-typedef Callback1<int> IntImportCallback;
-typedef Callback1<const IntImportCallback&> IntExportCallback;
-
-typedef Callback1<float> FloatImportCallback;
-typedef Callback1<const FloatImportCallback&> FloatExportCallback;
-
-typedef Callback1<const char*> StringImportCallback;
-typedef Callback1<const StringImportCallback&> StringExportCallback;
-
-typedef Callback1<std::size_t> SizeImportCallback;
-typedef Callback1<const SizeImportCallback&> SizeExportCallback;
-
-
-#endif
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