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// - construct.hpp -- Lambda Library -------------
//
// Copyright (C) 2000 Gary Powell ([email protected])
// Copyright (C) 1999, 2000 Jaakko Jarvi ([email protected])
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see http://www.boost.org
//
// -----------------------------------------------
#if !defined(BOOST_LAMBDA_CONSTRUCT_HPP)
#define BOOST_LAMBDA_CONSTRUCT_HPP
#include "boost/type_traits/remove_cv.hpp"
#include "boost/type_traits/is_pointer.hpp"
namespace boost {
namespace lambda {
// constructor is used together with bind. constructor<A> creates a bindable
// function object that passes its arguments forward to a constructor call
// of type A
template<class T> struct constructor {
template <class U> struct sig { typedef T type; };
T operator()() const {
return T();
}
template<class A1>
T operator()(A1& a1) const {
return T(a1);
}
template<class A1, class A2>
T operator()(A1& a1, A2& a2) const {
return T(a1, a2);
}
template<class A1, class A2, class A3>
T operator()(A1& a1, A2& a2, A3& a3) const {
return T(a1, a2, a3);
}
template<class A1, class A2, class A3, class A4>
T operator()(A1& a1, A2& a2, A3& a3, A4& a4) const {
return T(a1, a2, a3, a4);
}
template<class A1, class A2, class A3, class A4, class A5>
T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5) const {
return T(a1, a2, a3, a4, a5);
}
template<class A1, class A2, class A3, class A4, class A5, class A6>
T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6) const {
return T(a1, a2, a3, a4, a5, a6);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7>
T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7) const {
return T(a1, a2, a3, a4, a5, a6, a7);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8) const {
return T(a1, a2, a3, a4, a5, a6, a7, a8);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9) const {
return T(a1, a2, a3, a4, a5, a6, a7, a8, a9);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9, A10& a10) const {
return T(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
}
};
namespace detail {
// A standard conforming compiler could disambiguate between
// A1* and A1&, but not all compilers do that, so we need the
// helpers
template <bool IsPointer>
struct destructor_helper {
template<class A1>
static void exec(A1& a1) {
// remove all the qualifiers, not sure whether it is necessary
typedef typename boost::remove_cv<A1>::type plainA1;
a1.~plainA1();
}
};
template <>
struct destructor_helper<true> {
template<class A1>
static void exec(A1* a1) {
typedef typename boost::remove_cv<A1>::type plainA1;
(*a1).~plainA1();
}
};
}
// destructor funtion object
struct destructor {
template <class T> struct sig { typedef void type; };
template<class A1>
void operator()(A1& a1) const {
typedef typename boost::remove_cv<A1>::type plainA1;
detail::destructor_helper<boost::is_pointer<plainA1>::value>::exec(a1);
}
};
// new_ptr is used together with bind.
// note: placement new is not supported
template<class T> struct new_ptr {
template <class U> struct sig { typedef T* type; };
T* operator()() const {
return new T();
}
template<class A1>
T* operator()(A1& a1) const {
return new T(a1);
}
template<class A1, class A2>
T* operator()(A1& a1, A2& a2) const {
return new T(a1, a2);
}
template<class A1, class A2, class A3>
T* operator()(A1& a1, A2& a2, A3& a3) const {
return new T(a1, a2, a3);
}
template<class A1, class A2, class A3, class A4>
T* operator()(A1& a1, A2& a2, A3& a3, A4& a4) const {
return new T(a1, a2, a3, a4);
}
template<class A1, class A2, class A3, class A4, class A5>
T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5) const {
return new T(a1, a2, a3, a4, a5);
}
template<class A1, class A2, class A3, class A4, class A5, class A6>
T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6) const {
return new T(a1, a2, a3, a4, a5, a6);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7>
T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7) const {
return new T(a1, a2, a3, a4, a5, a6, a7);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8) const {
return new T(a1, a2, a3, a4, a5, a6, a7, a8);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9) const {
return new T(a1, a2, a3, a4, a5, a6, a7, a8, a9);
}
template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9, A10& a10) const {
return new T(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
}
};
// delete_ptr return void
struct delete_ptr {
template <class U> struct sig { typedef void type; };
template <class A1>
void operator()(A1& a1) const {
delete a1;
}
};
// new_array is used together with bind.
template<class T> struct new_array {
template <class U> struct sig { typedef T* type; };
T* operator()(int size) const {
return new T[size];
}
};
// delete_ptr return void
struct delete_array {
template <class U> struct sig { typedef void type; };
template <class A1>
void operator()(A1& a1) const {
delete[] a1;
}
};
} // namespace lambda
} // namespace boost
#endif