mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-27 11:52:25 +00:00
f6b72ff1f9
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16241 a592a061-630c-0410-9148-cb99ea01b6c8
549 lines
18 KiB
C++
549 lines
18 KiB
C++
// ------------------------------------------------------------------------------
|
|
// Copyright (c) 2000 Cadenza New Zealand Ltd
|
|
// Distributed under the Boost Software License, Version 1.0. (See accompany-
|
|
// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
// ------------------------------------------------------------------------------
|
|
// Boost functional.hpp header file
|
|
// See http://www.boost.org/libs/functional for documentation.
|
|
// ------------------------------------------------------------------------------
|
|
// $Id: functional.hpp,v 1.4.20.1 2006/12/02 14:17:26 andreas_huber69 Exp $
|
|
// ------------------------------------------------------------------------------
|
|
|
|
#ifndef BOOST_FUNCTIONAL_HPP
|
|
#define BOOST_FUNCTIONAL_HPP
|
|
|
|
#include <boost/config.hpp>
|
|
#include <boost/call_traits.hpp>
|
|
#include <functional>
|
|
|
|
namespace boost
|
|
{
|
|
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
// --------------------------------------------------------------------------
|
|
// The following traits classes allow us to avoid the need for ptr_fun
|
|
// because the types of arguments and the result of a function can be
|
|
// deduced.
|
|
//
|
|
// In addition to the standard types defined in unary_function and
|
|
// binary_function, we add
|
|
//
|
|
// - function_type, the type of the function or function object itself.
|
|
//
|
|
// - param_type, the type that should be used for passing the function or
|
|
// function object as an argument.
|
|
// --------------------------------------------------------------------------
|
|
namespace detail
|
|
{
|
|
template <class Operation>
|
|
struct unary_traits_imp;
|
|
|
|
template <class Operation>
|
|
struct unary_traits_imp<Operation*>
|
|
{
|
|
typedef Operation function_type;
|
|
typedef const function_type & param_type;
|
|
typedef typename Operation::result_type result_type;
|
|
typedef typename Operation::argument_type argument_type;
|
|
};
|
|
|
|
template <class R, class A>
|
|
struct unary_traits_imp<R(*)(A)>
|
|
{
|
|
typedef R (*function_type)(A);
|
|
typedef R (*param_type)(A);
|
|
typedef R result_type;
|
|
typedef A argument_type;
|
|
};
|
|
|
|
template <class Operation>
|
|
struct binary_traits_imp;
|
|
|
|
template <class Operation>
|
|
struct binary_traits_imp<Operation*>
|
|
{
|
|
typedef Operation function_type;
|
|
typedef const function_type & param_type;
|
|
typedef typename Operation::result_type result_type;
|
|
typedef typename Operation::first_argument_type first_argument_type;
|
|
typedef typename Operation::second_argument_type second_argument_type;
|
|
};
|
|
|
|
template <class R, class A1, class A2>
|
|
struct binary_traits_imp<R(*)(A1,A2)>
|
|
{
|
|
typedef R (*function_type)(A1,A2);
|
|
typedef R (*param_type)(A1,A2);
|
|
typedef R result_type;
|
|
typedef A1 first_argument_type;
|
|
typedef A2 second_argument_type;
|
|
};
|
|
} // namespace detail
|
|
|
|
template <class Operation>
|
|
struct unary_traits
|
|
{
|
|
typedef typename detail::unary_traits_imp<Operation*>::function_type function_type;
|
|
typedef typename detail::unary_traits_imp<Operation*>::param_type param_type;
|
|
typedef typename detail::unary_traits_imp<Operation*>::result_type result_type;
|
|
typedef typename detail::unary_traits_imp<Operation*>::argument_type argument_type;
|
|
};
|
|
|
|
template <class R, class A>
|
|
struct unary_traits<R(*)(A)>
|
|
{
|
|
typedef R (*function_type)(A);
|
|
typedef R (*param_type)(A);
|
|
typedef R result_type;
|
|
typedef A argument_type;
|
|
};
|
|
|
|
template <class Operation>
|
|
struct binary_traits
|
|
{
|
|
typedef typename detail::binary_traits_imp<Operation*>::function_type function_type;
|
|
typedef typename detail::binary_traits_imp<Operation*>::param_type param_type;
|
|
typedef typename detail::binary_traits_imp<Operation*>::result_type result_type;
|
|
typedef typename detail::binary_traits_imp<Operation*>::first_argument_type first_argument_type;
|
|
typedef typename detail::binary_traits_imp<Operation*>::second_argument_type second_argument_type;
|
|
};
|
|
|
|
template <class R, class A1, class A2>
|
|
struct binary_traits<R(*)(A1,A2)>
|
|
{
|
|
typedef R (*function_type)(A1,A2);
|
|
typedef R (*param_type)(A1,A2);
|
|
typedef R result_type;
|
|
typedef A1 first_argument_type;
|
|
typedef A2 second_argument_type;
|
|
};
|
|
#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
// --------------------------------------------------------------------------
|
|
// If we have no partial specialisation available, decay to a situation
|
|
// that is no worse than in the Standard, i.e., ptr_fun will be required.
|
|
// --------------------------------------------------------------------------
|
|
|
|
template <class Operation>
|
|
struct unary_traits
|
|
{
|
|
typedef Operation function_type;
|
|
typedef const Operation& param_type;
|
|
typedef typename Operation::result_type result_type;
|
|
typedef typename Operation::argument_type argument_type;
|
|
};
|
|
|
|
template <class Operation>
|
|
struct binary_traits
|
|
{
|
|
typedef Operation function_type;
|
|
typedef const Operation & param_type;
|
|
typedef typename Operation::result_type result_type;
|
|
typedef typename Operation::first_argument_type first_argument_type;
|
|
typedef typename Operation::second_argument_type second_argument_type;
|
|
};
|
|
#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
|
|
// --------------------------------------------------------------------------
|
|
// unary_negate, not1
|
|
// --------------------------------------------------------------------------
|
|
template <class Predicate>
|
|
class unary_negate
|
|
: public std::unary_function<typename unary_traits<Predicate>::argument_type,bool>
|
|
{
|
|
public:
|
|
explicit unary_negate(typename unary_traits<Predicate>::param_type x)
|
|
:
|
|
pred(x)
|
|
{}
|
|
bool operator()(typename call_traits<typename unary_traits<Predicate>::argument_type>::param_type x) const
|
|
{
|
|
return !pred(x);
|
|
}
|
|
private:
|
|
typename unary_traits<Predicate>::function_type pred;
|
|
};
|
|
|
|
template <class Predicate>
|
|
unary_negate<Predicate> not1(const Predicate &pred)
|
|
{
|
|
// The cast is to placate Borland C++Builder in certain circumstances.
|
|
// I don't think it should be necessary.
|
|
return unary_negate<Predicate>((typename unary_traits<Predicate>::param_type)pred);
|
|
}
|
|
|
|
template <class Predicate>
|
|
unary_negate<Predicate> not1(Predicate &pred)
|
|
{
|
|
return unary_negate<Predicate>(pred);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// binary_negate, not2
|
|
// --------------------------------------------------------------------------
|
|
template <class Predicate>
|
|
class binary_negate
|
|
: public std::binary_function<typename binary_traits<Predicate>::first_argument_type,
|
|
typename binary_traits<Predicate>::second_argument_type,
|
|
bool>
|
|
{
|
|
public:
|
|
explicit binary_negate(typename binary_traits<Predicate>::param_type x)
|
|
:
|
|
pred(x)
|
|
{}
|
|
bool operator()(typename call_traits<typename binary_traits<Predicate>::first_argument_type>::param_type x,
|
|
typename call_traits<typename binary_traits<Predicate>::second_argument_type>::param_type y) const
|
|
{
|
|
return !pred(x,y);
|
|
}
|
|
private:
|
|
typename binary_traits<Predicate>::function_type pred;
|
|
};
|
|
|
|
template <class Predicate>
|
|
binary_negate<Predicate> not2(const Predicate &pred)
|
|
{
|
|
// The cast is to placate Borland C++Builder in certain circumstances.
|
|
// I don't think it should be necessary.
|
|
return binary_negate<Predicate>((typename binary_traits<Predicate>::param_type)pred);
|
|
}
|
|
|
|
template <class Predicate>
|
|
binary_negate<Predicate> not2(Predicate &pred)
|
|
{
|
|
return binary_negate<Predicate>(pred);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// binder1st, bind1st
|
|
// --------------------------------------------------------------------------
|
|
template <class Operation>
|
|
class binder1st
|
|
: public std::unary_function<typename binary_traits<Operation>::second_argument_type,
|
|
typename binary_traits<Operation>::result_type>
|
|
{
|
|
public:
|
|
binder1st(typename binary_traits<Operation>::param_type x,
|
|
typename call_traits<typename binary_traits<Operation>::first_argument_type>::param_type y)
|
|
:
|
|
op(x), value(y)
|
|
{}
|
|
|
|
typename binary_traits<Operation>::result_type
|
|
operator()(typename call_traits<typename binary_traits<Operation>::second_argument_type>::param_type x) const
|
|
{
|
|
return op(value, x);
|
|
}
|
|
|
|
protected:
|
|
typename binary_traits<Operation>::function_type op;
|
|
typename binary_traits<Operation>::first_argument_type value;
|
|
};
|
|
|
|
template <class Operation>
|
|
inline binder1st<Operation> bind1st(const Operation &op,
|
|
typename call_traits<
|
|
typename binary_traits<Operation>::first_argument_type
|
|
>::param_type x)
|
|
{
|
|
// The cast is to placate Borland C++Builder in certain circumstances.
|
|
// I don't think it should be necessary.
|
|
return binder1st<Operation>((typename binary_traits<Operation>::param_type)op, x);
|
|
}
|
|
|
|
template <class Operation>
|
|
inline binder1st<Operation> bind1st(Operation &op,
|
|
typename call_traits<
|
|
typename binary_traits<Operation>::first_argument_type
|
|
>::param_type x)
|
|
{
|
|
return binder1st<Operation>(op, x);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// binder2nd, bind2nd
|
|
// --------------------------------------------------------------------------
|
|
template <class Operation>
|
|
class binder2nd
|
|
: public std::unary_function<typename binary_traits<Operation>::first_argument_type,
|
|
typename binary_traits<Operation>::result_type>
|
|
{
|
|
public:
|
|
binder2nd(typename binary_traits<Operation>::param_type x,
|
|
typename call_traits<typename binary_traits<Operation>::second_argument_type>::param_type y)
|
|
:
|
|
op(x), value(y)
|
|
{}
|
|
|
|
typename binary_traits<Operation>::result_type
|
|
operator()(typename call_traits<typename binary_traits<Operation>::first_argument_type>::param_type x) const
|
|
{
|
|
return op(x, value);
|
|
}
|
|
|
|
protected:
|
|
typename binary_traits<Operation>::function_type op;
|
|
typename binary_traits<Operation>::second_argument_type value;
|
|
};
|
|
|
|
template <class Operation>
|
|
inline binder2nd<Operation> bind2nd(const Operation &op,
|
|
typename call_traits<
|
|
typename binary_traits<Operation>::second_argument_type
|
|
>::param_type x)
|
|
{
|
|
// The cast is to placate Borland C++Builder in certain circumstances.
|
|
// I don't think it should be necessary.
|
|
return binder2nd<Operation>((typename binary_traits<Operation>::param_type)op, x);
|
|
}
|
|
|
|
template <class Operation>
|
|
inline binder2nd<Operation> bind2nd(Operation &op,
|
|
typename call_traits<
|
|
typename binary_traits<Operation>::second_argument_type
|
|
>::param_type x)
|
|
{
|
|
return binder2nd<Operation>(op, x);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// mem_fun, etc
|
|
// --------------------------------------------------------------------------
|
|
template <class S, class T>
|
|
class mem_fun_t : public std::unary_function<T*, S>
|
|
{
|
|
public:
|
|
explicit mem_fun_t(S (T::*p)())
|
|
:
|
|
ptr(p)
|
|
{}
|
|
S operator()(T* p) const
|
|
{
|
|
return (p->*ptr)();
|
|
}
|
|
private:
|
|
S (T::*ptr)();
|
|
};
|
|
|
|
template <class S, class T, class A>
|
|
class mem_fun1_t : public std::binary_function<T*, A, S>
|
|
{
|
|
public:
|
|
explicit mem_fun1_t(S (T::*p)(A))
|
|
:
|
|
ptr(p)
|
|
{}
|
|
S operator()(T* p, typename call_traits<A>::param_type x) const
|
|
{
|
|
return (p->*ptr)(x);
|
|
}
|
|
private:
|
|
S (T::*ptr)(A);
|
|
};
|
|
|
|
template <class S, class T>
|
|
class const_mem_fun_t : public std::unary_function<const T*, S>
|
|
{
|
|
public:
|
|
explicit const_mem_fun_t(S (T::*p)() const)
|
|
:
|
|
ptr(p)
|
|
{}
|
|
S operator()(const T* p) const
|
|
{
|
|
return (p->*ptr)();
|
|
}
|
|
private:
|
|
S (T::*ptr)() const;
|
|
};
|
|
|
|
template <class S, class T, class A>
|
|
class const_mem_fun1_t : public std::binary_function<const T*, A, S>
|
|
{
|
|
public:
|
|
explicit const_mem_fun1_t(S (T::*p)(A) const)
|
|
:
|
|
ptr(p)
|
|
{}
|
|
S operator()(const T* p, typename call_traits<A>::param_type x) const
|
|
{
|
|
return (p->*ptr)(x);
|
|
}
|
|
private:
|
|
S (T::*ptr)(A) const;
|
|
};
|
|
|
|
template<class S, class T>
|
|
inline mem_fun_t<S,T> mem_fun(S (T::*f)())
|
|
{
|
|
return mem_fun_t<S,T>(f);
|
|
}
|
|
|
|
template<class S, class T, class A>
|
|
inline mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A))
|
|
{
|
|
return mem_fun1_t<S,T,A>(f);
|
|
}
|
|
|
|
#ifndef BOOST_NO_POINTER_TO_MEMBER_CONST
|
|
template<class S, class T>
|
|
inline const_mem_fun_t<S,T> mem_fun(S (T::*f)() const)
|
|
{
|
|
return const_mem_fun_t<S,T>(f);
|
|
}
|
|
|
|
template<class S, class T, class A>
|
|
inline const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const)
|
|
{
|
|
return const_mem_fun1_t<S,T,A>(f);
|
|
}
|
|
#endif // BOOST_NO_POINTER_TO_MEMBER_CONST
|
|
|
|
// --------------------------------------------------------------------------
|
|
// mem_fun_ref, etc
|
|
// --------------------------------------------------------------------------
|
|
template <class S, class T>
|
|
class mem_fun_ref_t : public std::unary_function<T&, S>
|
|
{
|
|
public:
|
|
explicit mem_fun_ref_t(S (T::*p)())
|
|
:
|
|
ptr(p)
|
|
{}
|
|
S operator()(T& p) const
|
|
{
|
|
return (p.*ptr)();
|
|
}
|
|
private:
|
|
S (T::*ptr)();
|
|
};
|
|
|
|
template <class S, class T, class A>
|
|
class mem_fun1_ref_t : public std::binary_function<T&, A, S>
|
|
{
|
|
public:
|
|
explicit mem_fun1_ref_t(S (T::*p)(A))
|
|
:
|
|
ptr(p)
|
|
{}
|
|
S operator()(T& p, typename call_traits<A>::param_type x) const
|
|
{
|
|
return (p.*ptr)(x);
|
|
}
|
|
private:
|
|
S (T::*ptr)(A);
|
|
};
|
|
|
|
template <class S, class T>
|
|
class const_mem_fun_ref_t : public std::unary_function<const T&, S>
|
|
{
|
|
public:
|
|
explicit const_mem_fun_ref_t(S (T::*p)() const)
|
|
:
|
|
ptr(p)
|
|
{}
|
|
|
|
S operator()(const T &p) const
|
|
{
|
|
return (p.*ptr)();
|
|
}
|
|
private:
|
|
S (T::*ptr)() const;
|
|
};
|
|
|
|
template <class S, class T, class A>
|
|
class const_mem_fun1_ref_t : public std::binary_function<const T&, A, S>
|
|
{
|
|
public:
|
|
explicit const_mem_fun1_ref_t(S (T::*p)(A) const)
|
|
:
|
|
ptr(p)
|
|
{}
|
|
|
|
S operator()(const T& p, typename call_traits<A>::param_type x) const
|
|
{
|
|
return (p.*ptr)(x);
|
|
}
|
|
private:
|
|
S (T::*ptr)(A) const;
|
|
};
|
|
|
|
template<class S, class T>
|
|
inline mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)())
|
|
{
|
|
return mem_fun_ref_t<S,T>(f);
|
|
}
|
|
|
|
template<class S, class T, class A>
|
|
inline mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A))
|
|
{
|
|
return mem_fun1_ref_t<S,T,A>(f);
|
|
}
|
|
|
|
#ifndef BOOST_NO_POINTER_TO_MEMBER_CONST
|
|
template<class S, class T>
|
|
inline const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const)
|
|
{
|
|
return const_mem_fun_ref_t<S,T>(f);
|
|
}
|
|
|
|
template<class S, class T, class A>
|
|
inline const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const)
|
|
{
|
|
return const_mem_fun1_ref_t<S,T,A>(f);
|
|
}
|
|
#endif // BOOST_NO_POINTER_TO_MEMBER_CONST
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ptr_fun
|
|
// --------------------------------------------------------------------------
|
|
template <class Arg, class Result>
|
|
class pointer_to_unary_function : public std::unary_function<Arg,Result>
|
|
{
|
|
public:
|
|
explicit pointer_to_unary_function(Result (*f)(Arg))
|
|
:
|
|
func(f)
|
|
{}
|
|
|
|
Result operator()(typename call_traits<Arg>::param_type x) const
|
|
{
|
|
return func(x);
|
|
}
|
|
|
|
private:
|
|
Result (*func)(Arg);
|
|
};
|
|
|
|
template <class Arg, class Result>
|
|
inline pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg))
|
|
{
|
|
return pointer_to_unary_function<Arg,Result>(f);
|
|
}
|
|
|
|
template <class Arg1, class Arg2, class Result>
|
|
class pointer_to_binary_function : public std::binary_function<Arg1,Arg2,Result>
|
|
{
|
|
public:
|
|
explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2))
|
|
:
|
|
func(f)
|
|
{}
|
|
|
|
Result operator()(typename call_traits<Arg1>::param_type x, typename call_traits<Arg2>::param_type y) const
|
|
{
|
|
return func(x,y);
|
|
}
|
|
|
|
private:
|
|
Result (*func)(Arg1, Arg2);
|
|
};
|
|
|
|
template <class Arg1, class Arg2, class Result>
|
|
inline pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1, Arg2))
|
|
{
|
|
return pointer_to_binary_function<Arg1,Arg2,Result>(f);
|
|
}
|
|
} // namespace boost
|
|
|
|
#endif
|