base.h

一个对象回调接口库

// -*- c++ -*-
/* Do not edit! -- generated file */
#ifndef _SIGC_LAMBDA_BASE_HPP_
#define _SIGC_LAMBDA_BASE_HPP_
#include <sigc++/adaptors/adaptor_trait.h>

namespace sigc {

/** @defgroup lambdas Lambdas
 * libsigc++ ships with basic lambda functionality and the sigc::group adaptor that uses lambdas to transform a functor's parameter list.
 *
 * The lambda selectors sigc::_1, sigc::_2, ..., sigc::_9 are used to select the
 * first, second, ..., nineth argument from a list.
 *
 * @par Examples:
 *   @code
 *   std::cout << sigc::_1(10,20,30); // returns 10
 *   std::cout << sigc::_2(10,20,30); // returns 20
 *   ...
 *   @endcode
 *
 * Operators are defined so that lambda selectors can be used e.g. as placeholders in
 * arithmetic expressions.
 *
 * @par Examples:
 *   @code
 *   std::cout << (sigc::_1 + 5)(3); // returns (3 + 5)
 *   std::cout << (sigc::_1 * sigc::_2)(7,10); // returns (7 * 10)
 *   @endcode
 */

/** A hint to the compiler.
 * All lambda types publically inherit from this hint.
 *
 * @ingroup lambdas
 */
struct lambda_base : public adaptor_base {};

// Forward declaration of lambda.
template <class T_type> struct lambda;


namespace internal {

/** Abstracts lambda functionality.
 * Objects of this type store a value that may be of type lambda itself.
 * In this case, operator()() executes the lambda (a lambda is always a functor at the same time).
 * Otherwise, operator()() simply returns the stored value.
 */
template <class T_type, bool I_islambda = is_base_and_derived<lambda_base, T_type>::value> struct lambda_core;

/// Abstracts lambda functionality (template specialization for lambda values).
template <class T_type>
struct lambda_core<T_type, true> : public lambda_base
{
  template <class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void>
  struct deduce_result_type
    { typedef typename T_type::template deduce_result_type<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass,typename type_trait<T_arg5>::pass,typename type_trait<T_arg6>::pass,typename type_trait<T_arg7>::pass>::type type; };
  typedef typename T_type::result_type result_type;
  typedef T_type lambda_type;

  result_type
  operator()() const;

  template <class T_arg1>
  typename deduce_result_type<T_arg1>::type
  operator ()(T_arg1 _A_1) const 
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass>
             (_A_1); 
    }

  #ifndef SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
  template <class T_arg1>
  typename deduce_result_type<T_arg1>::type
  sun_forte_workaround(T_arg1 _A_1) const
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass>
             (_A_1); 
    }
  #endif //SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD

  template <class T_arg1,class T_arg2>
  typename deduce_result_type<T_arg1,T_arg2>::type
  operator ()(T_arg1 _A_1,T_arg2 _A_2) const 
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass>
             (_A_1,_A_2); 
    }

  #ifndef SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
  template <class T_arg1,class T_arg2>
  typename deduce_result_type<T_arg1,T_arg2>::type
  sun_forte_workaround(T_arg1 _A_1,T_arg2 _A_2) const
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass>
             (_A_1,_A_2); 
    }
  #endif //SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD

  template <class T_arg1,class T_arg2,class T_arg3>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3>::type
  operator ()(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3) const 
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass>
             (_A_1,_A_2,_A_3); 
    }

  #ifndef SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
  template <class T_arg1,class T_arg2,class T_arg3>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3>::type
  sun_forte_workaround(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3) const
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass>
             (_A_1,_A_2,_A_3); 
    }
  #endif //SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD

  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4>::type
  operator ()(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4) const 
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass>
             (_A_1,_A_2,_A_3,_A_4); 
    }

  #ifndef SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4>::type
  sun_forte_workaround(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4) const
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass>
             (_A_1,_A_2,_A_3,_A_4); 
    }
  #endif //SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD

  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4,class T_arg5>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4,T_arg5>::type
  operator ()(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4,T_arg5 _A_5) const 
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass,typename type_trait<T_arg5>::pass>
             (_A_1,_A_2,_A_3,_A_4,_A_5); 
    }

  #ifndef SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4,class T_arg5>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4,T_arg5>::type
  sun_forte_workaround(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4,T_arg5 _A_5) const
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass,typename type_trait<T_arg5>::pass>
             (_A_1,_A_2,_A_3,_A_4,_A_5); 
    }
  #endif //SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD

  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4,class T_arg5,class T_arg6>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4,T_arg5,T_arg6>::type
  operator ()(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4,T_arg5 _A_5,T_arg6 _A_6) const 
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass,typename type_trait<T_arg5>::pass,typename type_trait<T_arg6>::pass>
             (_A_1,_A_2,_A_3,_A_4,_A_5,_A_6); 
    }

  #ifndef SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4,class T_arg5,class T_arg6>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4,T_arg5,T_arg6>::type
  sun_forte_workaround(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4,T_arg5 _A_5,T_arg6 _A_6) const
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass,typename type_trait<T_arg5>::pass,typename type_trait<T_arg6>::pass>
             (_A_1,_A_2,_A_3,_A_4,_A_5,_A_6); 
    }
  #endif //SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD

  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4,class T_arg5,class T_arg6,class T_arg7>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4,T_arg5,T_arg6,T_arg7>::type
  operator ()(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4,T_arg5 _A_5,T_arg6 _A_6,T_arg7 _A_7) const 
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass,typename type_trait<T_arg5>::pass,typename type_trait<T_arg6>::pass,typename type_trait<T_arg7>::pass>
             (_A_1,_A_2,_A_3,_A_4,_A_5,_A_6,_A_7); 
    }

  #ifndef SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD
  template <class T_arg1,class T_arg2,class T_arg3,class T_arg4,class T_arg5,class T_arg6,class T_arg7>
  typename deduce_result_type<T_arg1,T_arg2,T_arg3,T_arg4,T_arg5,T_arg6,T_arg7>::type
  sun_forte_workaround(T_arg1 _A_1,T_arg2 _A_2,T_arg3 _A_3,T_arg4 _A_4,T_arg5 _A_5,T_arg6 _A_6,T_arg7 _A_7) const
    { return value_.SIGC_WORKAROUND_OPERATOR_PARENTHESES<typename type_trait<T_arg1>::pass,typename type_trait<T_arg2>::pass,typename type_trait<T_arg3>::pass,typename type_trait<T_arg4>::pass,typename type_trait<T_arg5>::pass,typename type_trait<T_arg6>::pass,typename type_trait<T_arg7>::pass>
             (_A_1,_A_2,_A_3,_A_4,_A_5,_A_6,_A_7); 
    }
  #endif //SIGC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD

  lambda_core() {}

  explicit lambda_core(const T_type& v)
    : value_(v) {}

  T_type value_;
};

template <class T_type>
typename lambda_core<T_type, true>::result_type
lambda_core<T_type, true>::operator()() const
  { return value_(); }


/// Abstracts lambda functionality (template specialization for other value types).
template <class T_type>
struct lambda_core<T_type, false> : public lambda_base
{
  template <class T_arg1=void,class T_arg2=void,class T_arg3=void,class T_arg4=void,class T_arg5=void,class T_arg6=void,class T_arg7=void>
  struct deduce_result_type
    { typedef T_type type; };