ossrv_pub/boost_apis/boost/lambda/construct.hpp
author William Roberts <williamr@symbian.org>
Fri, 23 Jul 2010 16:09:54 +0100
branchGCC_SURGE
changeset 47 d7383dba13ba
parent 0 e4d67989cc36
permissions -rw-r--r--
Reapply fix for EXPORT_C problem in backend.dll, which got lost in the merge - bug 2971
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// - construct.hpp -- Lambda Library -------------
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//
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// Copyright (C) 2000 Gary Powell (powellg@amazon.com)
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// Copyright (C) 1999, 2000 Jaakko Järvi (jaakko.jarvi@cs.utu.fi)
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// For more information, see http://www.boost.org
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//
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// -----------------------------------------------
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#if !defined(BOOST_LAMBDA_CONSTRUCT_HPP)
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#define BOOST_LAMBDA_CONSTRUCT_HPP
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namespace boost { 
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namespace lambda {
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  // constructor is used together with bind. constructor<A> creates a bindable
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  // function object that passes its arguments forward to a constructor call
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  // of type A
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template<class T> struct constructor {
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  template <class U> struct sig { typedef T type; };
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  T operator()() const {
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    return T();
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  }
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  template<class A1>
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  T operator()(A1& a1) const {
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    return T(a1);
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  }
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  template<class A1, class A2>
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  T operator()(A1& a1, A2& a2) const {
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    return T(a1, a2);
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  }
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  template<class A1, class A2, class A3>
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  T operator()(A1& a1, A2& a2, A3& a3) const {
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    return T(a1, a2, a3);
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  }
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  template<class A1, class A2, class A3, class A4>
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  T operator()(A1& a1, A2& a2, A3& a3, A4& a4) const {
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    return T(a1, a2, a3, a4);
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  }
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  template<class A1, class A2, class A3, class A4, class A5>
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  T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5) const {
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    return T(a1, a2, a3, a4, a5);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6>
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  T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6) const {
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    return T(a1, a2, a3, a4, a5, a6);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7>
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  T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7) const {
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    return T(a1, a2, a3, a4, a5, a6, a7);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
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  T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8) const {
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    return T(a1, a2, a3, a4, a5, a6, a7, a8);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
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  T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9) const {
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    return T(a1, a2, a3, a4, a5, a6, a7, a8, a9);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
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  T operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9, A10& a10) const {
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    return T(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
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  }
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};
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namespace detail {
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// A standard conforming compiler could disambiguate between
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// A1* and A1&, but not all compilers do that, so we need the
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// helpers
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template <bool IsPointer>
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struct destructor_helper {
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  template<class A1>
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  static void exec(A1& a1) {
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    // remove all the qualifiers, not sure whether it is necessary
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    typedef typename boost::remove_cv<A1>::type plainA1;
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     a1.~plainA1();
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  }
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};
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template <>
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struct destructor_helper<true> {
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  template<class A1>
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  static void exec(A1* a1) {
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    typedef typename boost::remove_cv<A1>::type plainA1;
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    (*a1).~plainA1();
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  }
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};
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   112
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}
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   114
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// destructor funtion object
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struct destructor {  
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  template <class T> struct sig { typedef void type; };  
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  template<class A1>
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  void operator()(A1& a1) const {
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    typedef typename boost::remove_cv<A1>::type plainA1;
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    detail::destructor_helper<boost::is_pointer<plainA1>::value>::exec(a1);
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  }
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};
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   127
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// new_ptr is used together with bind.
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  // note: placement new is not supported
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template<class T> struct new_ptr {
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  template <class U> struct sig { typedef T* type; };  
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  T* operator()() const {
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    return new T();
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  }
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  template<class A1>
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  T* operator()(A1& a1) const {
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    return new T(a1);
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  }
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  template<class A1, class A2>
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  T* operator()(A1& a1, A2& a2) const {
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    return new T(a1, a2);
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  }
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  template<class A1, class A2, class A3>
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  T* operator()(A1& a1, A2& a2, A3& a3) const {
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    return new T(a1, a2, a3);
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  }
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  template<class A1, class A2, class A3, class A4>
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  T* operator()(A1& a1, A2& a2, A3& a3, A4& a4) const {
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    return new T(a1, a2, a3, a4);
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  }
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  template<class A1, class A2, class A3, class A4, class A5>
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  T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5) const {
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    return new T(a1, a2, a3, a4, a5);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6>
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  T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6) const {
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    return new T(a1, a2, a3, a4, a5, a6);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7>
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  T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7) const {
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    return new T(a1, a2, a3, a4, a5, a6, a7);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
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  T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8) const {
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    return new T(a1, a2, a3, a4, a5, a6, a7, a8);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
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  T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9) const {
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    return new T(a1, a2, a3, a4, a5, a6, a7, a8, a9);
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  }
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  template<class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
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  T* operator()(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, A8& a8, A9& a9, A10& a10) const {
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    return new T(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
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  }
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};
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// delete_ptr return void
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struct delete_ptr {
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  template <class U> struct sig { typedef void type; };  
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  template <class A1>
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  void operator()(A1& a1) const {
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    delete a1;
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  }
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};
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// new_array is used together with bind.
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template<class T> struct new_array {
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  template <class U> struct sig { typedef T* type; };  
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  T* operator()(int size) const {
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    return new T[size];
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  }
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};
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// delete_ptr return void
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struct delete_array {
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  template <class U> struct sig { typedef void type; };  
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  template <class A1>
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  void operator()(A1& a1) const {
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    delete[] a1;
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  }
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};
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} // namespace lambda 
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} // namespace boost
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#endif