epoc32/include/stdapis/boost/lambda/detail/actions.hpp
branchSymbian2
changeset 2 2fe1408b6811
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/epoc32/include/stdapis/boost/lambda/detail/actions.hpp	Tue Mar 16 16:12:26 2010 +0000
     1.3 @@ -0,0 +1,174 @@
     1.4 +// -- Boost Lambda Library - actions.hpp ----------------------------------
     1.5 +
     1.6 +// Copyright (C) 1999, 2000 Jaakko Järvi (jaakko.jarvi@cs.utu.fi)
     1.7 +//
     1.8 +// Distributed under the Boost Software License, Version 1.0. (See
     1.9 +// accompanying file LICENSE_1_0.txt or copy at
    1.10 +// http://www.boost.org/LICENSE_1_0.txt)
    1.11 +
    1.12 +// For more information, see www.boost.org
    1.13 +
    1.14 +// ----------------------------------------------------------------
    1.15 +
    1.16 +#ifndef BOOST_LAMBDA_ACTIONS_HPP
    1.17 +#define BOOST_LAMBDA_ACTIONS_HPP
    1.18 +
    1.19 +namespace boost { 
    1.20 +namespace lambda {
    1.21 +
    1.22 +
    1.23 +
    1.24 +template<int Arity, class Act> class action;
    1.25 +
    1.26 +// these need to be defined here, since the corresponding lambda 
    1.27 +// functions are members of lambda_functor classes
    1.28 +
    1.29 +class assignment_action {};
    1.30 +class subscript_action {};
    1.31 +
    1.32 +template <class Action> class other_action;
    1.33 +
    1.34 +// action for specifying the explicit return type
    1.35 +template <class RET> class explicit_return_type_action {};
    1.36 +
    1.37 +// action for preventing the expansion of a lambda expression
    1.38 +struct protect_action {};
    1.39 +
    1.40 +  // must be defined here, comma is a special case
    1.41 +struct comma_action {};
    1.42 +
    1.43 +
    1.44 +  // actions, for which the existence of protect is checked in return type 
    1.45 +  // deduction.
    1.46 +
    1.47 +template <class Action> struct is_protectable {
    1.48 +  BOOST_STATIC_CONSTANT(bool, value = false);
    1.49 +};
    1.50 +
    1.51 +// NOTE: comma action is protectable. Other protectable actions
    1.52 +// are listed in operator_actions.hpp
    1.53 +
    1.54 +template<> struct is_protectable<other_action<comma_action> > {
    1.55 +  BOOST_STATIC_CONSTANT(bool, value = true);
    1.56 +};
    1.57 +
    1.58 +
    1.59 +namespace detail {
    1.60 +
    1.61 +  // this type is used in return type deductions to signal that deduction 
    1.62 +  // did not find a result. It does not necessarily mean an error, it commonly
    1.63 +  // means that something else should be tried.
    1.64 +  class unspecified {};
    1.65 +}
    1.66 +
    1.67 +  // function action is a special case: bind functions can be called with 
    1.68 +  // the return type specialized explicitly e.g. bind<int>(foo);
    1.69 +  // If this call syntax is used, the return type is stored in the latter
    1.70 +  // argument of function_action template. Otherwise the argument gets the type
    1.71 +  // 'unspecified'.
    1.72 +  // This argument is only relevant in the return type deduction code
    1.73 +template <int I, class Result_type = detail::unspecified> 
    1.74 +class function_action {};
    1.75 +   
    1.76 +template<class T> class function_action<1, T> {
    1.77 +public:
    1.78 +  template<class RET, class A1>
    1.79 +  static RET apply(A1& a1) {
    1.80 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
    1.81 +      template apply<RET>(a1);
    1.82 +  }
    1.83 +};
    1.84 +
    1.85 +template<class T> class function_action<2, T> {
    1.86 +public:
    1.87 +  template<class RET, class A1, class A2>
    1.88 +  static RET apply(A1& a1, A2& a2) {
    1.89 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
    1.90 +      template apply<RET>(a1, a2);
    1.91 +  }
    1.92 +};
    1.93 +
    1.94 +template<class T> class function_action<3, T> {
    1.95 +public:
    1.96 +  template<class RET, class A1, class A2, class A3>
    1.97 +  static RET apply(A1& a1, A2& a2, A3& a3) {
    1.98 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
    1.99 +      template apply<RET>(a1, a2, a3);
   1.100 +  }
   1.101 +};
   1.102 +
   1.103 +template<class T> class function_action<4, T> {
   1.104 +public:
   1.105 +  template<class RET, class A1, class A2, class A3, class A4>
   1.106 +  static RET apply(A1& a1, A2& a2, A3& a3, A4& a4) {
   1.107 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
   1.108 +      template apply<RET>(a1, a2, a3, a4);
   1.109 +  }
   1.110 +};
   1.111 +
   1.112 +template<class T> class function_action<5, T> {
   1.113 +public:
   1.114 +  template<class RET, class A1, class A2, class A3, class A4, class A5>
   1.115 +  static RET apply(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5) {
   1.116 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
   1.117 +      template apply<RET>(a1, a2, a3, a4, a5);
   1.118 +  }
   1.119 +};
   1.120 +
   1.121 +template<class T> class function_action<6, T> {
   1.122 +public:
   1.123 +  template<class RET, class A1, class A2, class A3, class A4, class A5, 
   1.124 +           class A6>
   1.125 +  static RET apply(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6) {
   1.126 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
   1.127 +      template apply<RET>(a1, a2, a3, a4, a5, a6);
   1.128 +  }
   1.129 +};
   1.130 +
   1.131 +template<class T> class function_action<7, T> {
   1.132 +public:
   1.133 +  template<class RET, class A1, class A2, class A3, class A4, class A5,  
   1.134 +           class A6, class A7>
   1.135 +  static RET apply(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7) {
   1.136 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
   1.137 +      template apply<RET>(a1, a2, a3, a4, a5, a6, a7);
   1.138 +  }
   1.139 +};
   1.140 +
   1.141 +template<class T> class function_action<8, T> {
   1.142 +public:
   1.143 +  template<class RET, class A1, class A2, class A3, class A4, class A5, 
   1.144 +           class A6, class A7, class A8>
   1.145 +  static RET apply(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, 
   1.146 +                   A8& a8) {
   1.147 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
   1.148 +      template apply<RET>(a1, a2, a3, a4, a5, a6, a7, a8);
   1.149 +  }
   1.150 +};
   1.151 +
   1.152 +template<class T> class function_action<9, T> {
   1.153 +public:
   1.154 +  template<class RET, class A1, class A2, class A3, class A4, class A5, 
   1.155 +           class A6, class A7, class A8, class A9>
   1.156 +  static RET apply(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, 
   1.157 +                   A8& a8, A9& a9) {
   1.158 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
   1.159 +      template apply<RET>(a1, a2, a3, a4, a5, a6, a7, a8, a9);
   1.160 +  }
   1.161 +};
   1.162 +
   1.163 +template<class T> class function_action<10, T> {
   1.164 +public:
   1.165 +  template<class RET, class A1, class A2, class A3, class A4, class A5, 
   1.166 +           class A6, class A7, class A8, class A9, class A10>
   1.167 +  static RET apply(A1& a1, A2& a2, A3& a3, A4& a4, A5& a5, A6& a6, A7& a7, 
   1.168 +                   A8& a8, A9& a9, A10& a10) {
   1.169 +    return function_adaptor<typename boost::remove_cv<A1>::type>::
   1.170 +      template apply<RET>(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
   1.171 +  }
   1.172 +};
   1.173 +
   1.174 +} // namespace lambda
   1.175 +} // namespace boost
   1.176 +
   1.177 +#endif