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503 lines (446 loc) · 12 KB
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#ifndef CLASSDESC_FUNCTIONDB2
#define CLASSDESC_FUNCTIONDB2
template <class R, class A1, class A2>
struct Arg<R (*)(A1,A2), 1>
{
typedef A1 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2), 1>
{
typedef A1 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2) const, 1>
{
typedef A1 T;
typedef T type;
};
#if defined(__cplusplus) && __cplusplus>=201703L
// noexcept methods
template <class R, class A1, class A2>
struct Arg<R (*)(A1,A2) noexcept, 1>
{
typedef A1 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2) noexcept, 1>
{
typedef A1 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2) const noexcept, 1>
{
typedef A1 T;
typedef T type;
};
#endif
template <class R, class A1, class A2>
struct Arg<R (*)(A1,A2), 2>
{
typedef A2 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2), 2>
{
typedef A2 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2) const, 2>
{
typedef A2 T;
typedef T type;
};
#if defined(__cplusplus) && __cplusplus>=201703L
// noexcept methods
template <class R, class A1, class A2>
struct Arg<R (*)(A1,A2) noexcept, 2>
{
typedef A2 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2) noexcept, 2>
{
typedef A2 T;
typedef T type;
};
template <class C, class R, class A1, class A2>
struct Arg<R (C::*)(A1,A2) const noexcept, 2>
{
typedef A2 T;
typedef T type;
};
#endif
template <class F, template<class> class P>
struct AllArgs<F,P,2>
{
static const bool value=true && P<typename Arg<F,1>::T>::value && P<typename Arg<F,2>::T>::value;
};
template <class R, class A1, class A2>
struct Arity<R (*)(A1,A2)>
{
static const int V=2;
static const int value=2;
};
template <class R, class A1, class A2>
struct Return<R (*)(A1,A2)>
{
typedef R T;
typedef R type;
};
template <class C,class R, class A1, class A2>
struct Arity<R (* C::*)(A1,A2)>
{
static const int V=2;
static const int value=2;
};
template <class C,class R, class A1, class A2>
struct Return<R (* C::*)(A1,A2)>
{
typedef R T;
typedef R type;
};
template <class C, class R, class A1, class A2>
struct Arity<R (C::*)(A1,A2)>
{
static const int V=2;
static const int value=2;
};
template <class C, class R, class A1, class A2>
struct Return<R (C::*)(A1,A2)>
{
typedef R T;
typedef R type;
};
template <class C, class R, class A1, class A2>
struct Arity<R (C::*)(A1,A2) const>
{
static const int V=2;
static const int value=2;
};
template <class C, class R, class A1, class A2>
struct Return<R (C::*)(A1,A2) const>
{
typedef R T;
typedef R type;
};
template <class C, class R, class A1, class A2>
struct ClassOf<R (C::*)(A1,A2)>
{
typedef C T;
typedef C type;
};
template <class C, class R, class A1, class A2>
struct ClassOf<R (*C::*)(A1,A2)>
{
typedef C T;
typedef C type;
};
template <class C, class R, class A1, class A2>
struct ClassOf<R (C::*)(A1,A2) const>
{
typedef C T;
typedef C type;
};
template <class C, class R, class A1, class A2>
struct is_member_function_ptr<R (C::*)(A1,A2)>
{
static const bool value=true;
};
template <class C, class R, class A1, class A2>
struct is_member_function_ptr<R (C::*)(A1,A2) const>
{
static const bool value=true;
};
template <class C, class R, class A1, class A2>
struct is_const_method<R (C::*)(A1,A2) const>
{
static const bool value=true;
};
template <class R, class A1, class A2>
struct is_nonmember_function_ptr<R (*)(A1,A2)>
{
static const bool value=true;
};
template <class C, class R, class A1, class A2>
struct is_nonmember_function_ptr<R (*C::*)(A1,A2)>
{
static const bool value=true;
};
template <class C, class D, class R, class A1, class A2>
class bound_method<C, R (D::*)(A1,A2)>
{
typedef R (D::*M)(A1,A2);
C* obj;
M method;
public:
static const int arity=2;
typedef R Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(C& obj, M method): obj(&obj), method(method) {}
typename enable_if<Not<classdesc::is_const<C> >, R>::T
operator()(A1 a1,A2 a2) const {return (obj->*method)(a1,a2);}
void rebind(C& newObj) {obj=&newObj;}
static const bool is_const=false;
};
template <class C, class D, class R, class A1, class A2>
class bound_method<const C, R (D::*)(A1,A2)>
{
typedef R (D::*M)(A1,A2);
const C* obj;
M method;
public:
static const int arity=2;
typedef R Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(const C& obj, M method): obj(&obj), method(method) {}
R operator()(A1 a1,A2 a2) const {
throw std::runtime_error("cannot call method, inappropriate argument type");
}
void rebind(C& newObj) {obj=&newObj;}
static const bool is_const=false;
};
template <class C, class D, class R, class A1, class A2>
class bound_method<C, R (D::*)(A1,A2) const>
{
typedef R (D::*M)(A1,A2) const;
C& obj;
M method;
public:
static const int arity=2;
typedef R Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(C& obj, M method): obj(obj), method(method) {}
R operator()(A1 a1,A2 a2) const {return (obj.*method)(a1,a2);}
static const bool is_const=true;
};
#if defined(__cplusplus) && __cplusplus>=201703L
// noexcept methods
template <class R, class A1, class A2>
struct Arity<R (*)(A1,A2) noexcept>
{
static const int V=2;
static const int value=2;
};
template <class R, class A1, class A2>
struct Return<R (*)(A1,A2) noexcept>
{
typedef R T;
typedef R type;
};
template <class C,class R, class A1, class A2>
struct Arity<R (* C::*)(A1,A2) noexcept>
{
static const int V=2;
static const int value=2;
};
template <class C,class R, class A1, class A2>
struct Return<R (* C::*)(A1,A2) noexcept>
{
typedef R T;
typedef R type;
};
template <class C, class R, class A1, class A2>
struct Arity<R (C::*)(A1,A2) noexcept>
{
static const int V=2;
static const int value=2;
};
template <class C, class R, class A1, class A2>
struct Return<R (C::*)(A1,A2) noexcept>
{
typedef R T;
typedef R type;
};
template <class C, class R, class A1, class A2>
struct Arity<R (C::*)(A1,A2) const noexcept>
{
static const int V=2;
static const int value=2;
};
template <class C, class R, class A1, class A2>
struct Return<R (C::*)(A1,A2) const noexcept>
{
typedef R T;
typedef R type;
};
template <class C, class R, class A1, class A2>
struct ClassOf<R (C::*)(A1,A2) noexcept>
{
typedef C T;
typedef C type;
};
template <class C, class R, class A1, class A2>
struct ClassOf<R (*C::*)(A1,A2) noexcept>
{
typedef C T;
typedef C type;
};
template <class C, class R, class A1, class A2>
struct ClassOf<R (C::*)(A1,A2) const noexcept>
{
typedef C T;
typedef C type;
};
template <class C, class R, class A1, class A2>
struct is_member_function_ptr<R (C::*)(A1,A2) noexcept>
{
static const bool value=true;
};
template <class C, class R, class A1, class A2>
struct is_member_function_ptr<R (C::*)(A1,A2) const noexcept>
{
static const bool value=true;
};
template <class C, class R, class A1, class A2>
struct is_const_method<R (C::*)(A1,A2) const noexcept>
{
static const bool value=true;
};
template <class R, class A1, class A2>
struct is_nonmember_function_ptr<R (*)(A1,A2) noexcept>
{
static const bool value=true;
};
template <class C, class R, class A1, class A2>
struct is_nonmember_function_ptr<R (*C::*)(A1,A2) noexcept>
{
static const bool value=true;
};
template <class C, class D, class R, class A1, class A2>
class bound_method<C, R (D::*)(A1,A2) noexcept>
{
typedef R (D::*M)(A1,A2);
C* obj;
M method;
public:
static const int arity=2;
typedef R Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(C& obj, M method): obj(&obj), method(method) {}
typename enable_if<Not<classdesc::is_const<C> >, R>::T
operator()(A1 a1,A2 a2) const {return (obj->*method)(a1,a2);}
void rebind(C& newObj) {obj=&newObj;}
static const bool is_const=false;
};
template <class C, class D, class A1, class A2>
class bound_method<C, void (D::*)(A1,A2) noexcept>
{
typedef void (D::*M)(A1,A2);
C* obj;
M method;
public:
static const int arity=2;
typedef void Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(C& obj, M method): obj(&obj), method(method) {}
typename enable_if<Not<classdesc::is_const<C> > >::T
operator()(A1 a1,A2 a2) const {(obj->*method)(a1,a2);}
void rebind(C& newObj) {obj=&newObj;}
static const bool is_const=false;
};
template <class C, class D, class R, class A1, class A2>
class bound_method<const C, R (D::*)(A1,A2) noexcept>
{
typedef R (D::*M)(A1,A2);
const C* obj;
M method;
public:
static const int arity=2;
typedef R Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(const C& obj, M method): obj(&obj), method(method) {}
R operator()(A1 a1,A2 a2) const {
throw std::runtime_error("cannot call method, inappropriate argument type");
}
void rebind(C& newObj) {obj=&newObj;}
static const bool is_const=false;
};
template <class C, class D, class A1, class A2>
class bound_method<const C, void (D::*)(A1,A2) noexcept>
{
typedef void (D::*M)(A1,A2);
const C* obj;
M method;
public:
static const int arity=2;
typedef void Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(const C& obj, M method): obj(&obj), method(method) {}
typename enable_if<Not<classdesc::is_const<C> > >::T
operator()(A1 a1,A2 a2) const {
throw std::runtime_error("cannot call method, inappropriate argument type");
}
void rebind(C& newObj) {obj=&newObj;}
static const bool is_const=false;
};
template <class C, class D, class R, class A1, class A2>
class bound_method<C, R (D::*)(A1,A2) const noexcept>
{
typedef R (D::*M)(A1,A2) const;
C& obj;
M method;
public:
static const int arity=2;
typedef R Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(C& obj, M method): obj(obj), method(method) {}
R operator()(A1 a1,A2 a2) const {return (obj.*method)(a1,a2);}
static const bool is_const=true;
};
template <class C, class D, class A1, class A2>
class bound_method<C, void (D::*)(A1,A2) const noexcept>
{
typedef void (D::*M)(A1,A2) const;
C& obj;
M method;
public:
static const int arity=2;
typedef void Ret;
template <int i> struct Arg: public functional::Arg<M,i> {};
bound_method(C& obj, M method): obj(obj), method(method) {}
void operator()(A1 a1,A2 a2) const {(obj.*method)(a1,a2);}
static const bool is_const=true;
};
#endif
template <class F, class Args>
typename enable_if<And<AllArgs<F, is_rvalue>, Eq<Arity<F>::value, 2> >,
typename Return<F>::T>::T
apply_nonvoid_fn(F f, Args& a, Fdummy<F> dum=0)
{
return f(a[0],a[1]);
}
/*
TODO: if any of the arguments to f are lvalues, we need to construct temporaries,
which require C++-11 ability to test for the existence of a copy constructor.
If the return type is not copy constructable, the user must arrange for the return value to be discarded
*/
template <class F, class Args>
typename enable_if<And<AllArgs<F, is_rvalue>, Eq<Arity<F>::value, 2> >,
void>::T
apply_void_fn(F f, Args& a, Fdummy<F> dum=0)
{
f(a[0],a[1]);
}
template <class Buffer, class F>
typename enable_if<Eq<Arity<F>::value, 2>, typename Return<F>::T>::T
callOnBuffer(Buffer& buffer, F f)
{
typename remove_const<typename remove_reference<typename Arg<F,1>::T>::type>::type a1;
buffer>>a1;
typename remove_const<typename remove_reference<typename Arg<F,2>::T>::type>::type a2;
buffer>>a2;
return f(
a1
,
a2
);
}
#endif
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