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/* Copyright (C) 2004 Garrett A. Kajmowicz
This file is part of the uClibc++ Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __STD_HEADER_FUNCTIONAL
#define __STD_HEADER_FUNCTIONAL 1
#include "basic_definitions"
namespace std{
template <class Arg, class Result> struct unary_function;
template <class Arg1, class Arg2, class Result> struct binary_function;
template <class T> struct plus;
template <class T> struct minus;
template <class T> struct multiplies;
template <class T> struct divides;
template <class T> struct modulus;
template <class T> struct negate;
template <class T> struct equal_to;
template <class T> struct not_equal_to;
template <class T> struct greater;
template <class T> struct less;
template <class T> struct greater_equal;
template <class T> struct less_equal;
template <class T> struct logical_and;
template <class T> struct logical_or;
template <class T> struct logical_not;
template <class Predicate> struct unary_negate;
template <class Predicate> unary_negate<Predicate> not1(const Predicate&);
template <class Predicate> struct binary_negate;
template <class Predicate> binary_negate<Predicate> not2(const Predicate&);
template <class Operation> class binder1st;
template <class Operation, class T> binder1st<Operation> bind1st(const Operation&, const T&);
template <class Operation> class binder2nd;
template <class Operation, class T> binder2nd<Operation> bind2nd(const Operation&, const T&);
template <class Arg, class Result> class pointer_to_unary_function;
template <class Arg, class Result> pointer_to_unary_function<Arg,Result> ptr_fun(Result (*)(Arg));
template <class Arg1, class Arg2, class Result> class pointer_to_binary_function;
template <class Arg1, class Arg2, class Result>
pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*)(Arg1,Arg2));
template<class S, class T> class mem_fun_t;
template<class S, class T, class A> class mem_fun1_t;
template<class S, class T> class const_mem_fun_t;
template<class S, class T, class A> class const_mem_fun1_t;
template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)());
template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A));
template<class S, class T> class mem_fun_ref_t;
template<class S, class T, class A> class mem_fun1_ref_t;
template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)());
template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun1_ref(S (T::*f)(A));
//Implementation
template <class Arg, class Result> struct _UCXXEXPORT unary_function{
typedef Arg argument_type;
typedef Result result_type;
};
template <class Arg1, class Arg2, class Result> struct _UCXXEXPORT binary_function{
typedef Arg1 first_argument_type;
typedef Arg2 second_argument_type;
typedef Result result_type;
};
template <class T> struct _UCXXEXPORT plus : binary_function<T,T,T>{
T operator()(const T& x, const T& y) const{
return x + y;
}
};
template <class T> struct _UCXXEXPORT minus : binary_function<T,T,T>{
T operator()(const T& x, const T& y) const{
return x - y;
}
};
template <class T> struct _UCXXEXPORT multiplies : binary_function<T,T,T>{
T operator()(const T& x, const T& y) const{
return x * y;
}
};
template <class T> struct _UCXXEXPORT divides : binary_function<T,T,T>{
T operator()(const T& x, const T& y) const{
return x / y;
}
};
template <class T> struct _UCXXEXPORT modulus : binary_function<T,T,T>{
T operator()(const T& x, const T& y) const{
return x % y;
}
};
template <class T> struct _UCXXEXPORT negate : unary_function<T,T>{
T operator()(const T& x) const{
return -x;
}
};
template <class T> struct _UCXXEXPORT equal_to : binary_function<T,T,bool>{
bool operator()(const T& x, const T& y) const{
return (x == y);
}
};
template <class T> struct _UCXXEXPORT not_equal_to : binary_function<T,T,bool>{
bool operator()(const T& x, const T& y) const{
return (x != y);
}
};
template <class T> struct _UCXXEXPORT greater : binary_function<T,T,bool>{
bool operator()(const T& x, const T& y) const{
return (x > y);
}
};
template <class T> struct _UCXXEXPORT less : binary_function<T,T,bool>{
bool operator()(const T& x, const T& y) const{
return (x < y);
}
};
template <class T> struct _UCXXEXPORT greater_equal : binary_function<T,T,bool>{
bool operator()(const T& x, const T& y) const{
return (x >= y);
}
};
template <class T> struct _UCXXEXPORT less_equal : binary_function<T,T,bool>{
bool operator()(const T& x, const T& y) const{
return (x <= y);
}
};
template <class T> struct _UCXXEXPORT logical_and : binary_function<T,T,bool> {
bool operator()(const T& x, const T& y) const{
return (x && y);
}
};
template <class T> struct _UCXXEXPORT logical_or : binary_function<T,T,bool> {
bool operator()(const T& x, const T& y) const{
return (x || y);
}
};
template <class T> struct _UCXXEXPORT logical_not : unary_function<T,bool> {
bool operator()(const T& x) const{
return !x;
}
};
template <class Predicate> struct _UCXXEXPORT unary_negate
: public unary_function<typename Predicate::argument_type,bool>
{
public:
explicit unary_negate(const Predicate& pred) : p(pred) { }
bool operator()(const typename Predicate::argument_type& x) const{
return !p(x);
}
private:
Predicate p;
};
template <class Predicate> _UCXXEXPORT unary_negate<Predicate> not1(const Predicate& pred){
return unary_negate<Predicate>(pred);
}
template <class Predicate> struct _UCXXEXPORT binary_negate : public
binary_function<typename Predicate::first_argument_type,
typename Predicate::second_argument_type, bool>
{
public:
explicit binary_negate(const Predicate& pred) : p(pred) { }
bool operator()(const typename Predicate::first_argument_type& x,
const typename Predicate::second_argument_type& y) const
{
return !p(x, y);
}
private:
Predicate p;
};
template <class Predicate> _UCXXEXPORT binary_negate<Predicate> not2(const Predicate& pred){
return binary_negate<Predicate>(pred);
}
template <class Operation> class _UCXXEXPORT binder1st
: public unary_function<typename Operation::second_argument_type,
typename Operation::result_type>
{
protected:
Operation op;
typename Operation::first_argument_type value;
public:
binder1st(const Operation& x, const typename Operation::first_argument_type& y) : op(x), value(y){ }
typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const{
return op(value,x);
}
};
template <class Operation, class T> _UCXXEXPORT binder1st<Operation> bind1st(const Operation& op, const T& x){
return binder1st<Operation>(op, typename Operation::first_argument_type(x));
}
template <class Operation> class _UCXXEXPORT binder2nd
: public unary_function<typename Operation::first_argument_type,
typename Operation::result_type>
{
protected:
Operation op;
typename Operation::second_argument_type value;
public:
binder2nd(const Operation& x, const typename Operation::second_argument_type& y) : op(x), value(y) { }
typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const{
return op(x,value);
}
};
template <class Operation, class T> _UCXXEXPORT
binder2nd<Operation> bind2nd(const Operation& op, const T& x)
{
return binder2nd<Operation>(op, typename Operation::second_argument_type(x));
}
template <class Arg, class Result> class _UCXXEXPORT
pointer_to_unary_function : public unary_function<Arg, Result>
{
protected:
Result (*func)(Arg);
public:
explicit pointer_to_unary_function(Result (*f)(Arg)) : func(f) { }
Result operator()(Arg x) const{
return func(x);
}
};
template <class Arg, class Result> _UCXXEXPORT 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 _UCXXEXPORT
pointer_to_binary_function : public binary_function<Arg1,Arg2,Result>
{
protected:
Result (*func)(Arg1, Arg2);
public:
explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)) : func(f) { }
Result operator()(Arg1 x, Arg2 y) const{
return func(x, y);
}
};
template <class Arg1, class Arg2, class Result> _UCXXEXPORT
pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1, Arg2))
{
return pointer_to_binary_function<Arg1,Arg2,Result>(f);
}
template <class S, class T> class _UCXXEXPORT mem_fun_t
: public unary_function<T*, S>
{
public:
explicit mem_fun_t(S (T::*p)()) : m(p) { }
S operator()(T* p) const { return (p->*m)(); }
private:
S (T::*m)();
};
template <class S, class T, class A> class _UCXXEXPORT mem_fun1_t
: public binary_function<T*, A, S>
{
public:
explicit mem_fun1_t(S (T::*p)(A)) : m(p) { }
S operator()(T* p, A x) const { return (p->*m)(x); }
private:
S (T::*m)(A);
};
template <class S, class T> class _UCXXEXPORT const_mem_fun_t
: public unary_function<const T*, S>
{
public:
explicit const_mem_fun_t(S (T::*p)() const) : m(p) { }
S operator()(const T* p) const { return (p->*m)(); }
private:
S (T::*m)() const;
};
template <class S, class T, class A> class _UCXXEXPORT const_mem_fun1_t
: public binary_function<T*, A, S>
{
public:
explicit const_mem_fun1_t(S (T::*p)(A) const) : m(p) { }
S operator()(const T* p, A x) const { return (p->*m)(x); }
private:
S (T::*m)(A) const;
};
template<class S, class T> _UCXXEXPORT mem_fun_t<S,T> mem_fun(S (T::*f)()){
return mem_fun_t<S, T>(f);
}
template<class S, class T> _UCXXEXPORT 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> _UCXXEXPORT mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)){
return mem_fun1_t<S, T, A>(f);
}
template<class S, class T, class A> _UCXXEXPORT const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const){
return const_mem_fun1_t<S, T, A>(f);
}
template <class S, class T> class _UCXXEXPORT mem_fun_ref_t
: public unary_function<T, S>
{
public:
explicit mem_fun_ref_t(S (T::*p)()) : mf(p) { }
S operator()(T& p) { return (p.*mf)(); }
private:
S (T::*mf)();
};
template <class S, class T, class A> class _UCXXEXPORT mem_fun1_ref_t
: public binary_function<T, A, S>
{
public:
explicit mem_fun1_ref_t(S (T::*p)(A)) : mf(p) { }
S operator()(T& p, A x) { return (p.*mf)(x); }
private:
S (T::*mf)(A);
};
template<class S, class T> _UCXXEXPORT 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> _UCXXEXPORT mem_fun1_ref_t<S,T,A> mem_fun1_ref(S (T::*f)(A)){
return mem_fun1_ref_t<S,T,A>(f);
}
}
//These are SGI extensions which are checked for by some conformance checks. They
// are *NOT* part of the C++ standard, however
template <class Op1, class Op2> class _UCXXEXPORT unary_compose :
public std::unary_function<typename Op2::argument_type,
typename Op1::result_type>
{
protected:
Op1 mf1;
Op2 mf2;
public:
unary_compose(const Op1& x, const Op2& y) : mf1(x), mf2(y) { }
typename Op1::result_type operator()(const typename Op2::argument_type& x) const {
return mf1(mf2(x));
}
};
template <class Op1, class Op2> _UCXXEXPORT
inline unary_compose<Op1, Op2>
compose1(const Op1& fn1, const Op2& fn2){
return unary_compose<Op1, Op2>(fn1, fn2);
}
template <class Op1, class Op2, class Op3> class _UCXXEXPORT binary_compose :
public std::unary_function<typename Op2::argument_type, typename Op1::result_type>
{
protected:
Op1 mf1;
Op2 mf2;
Op3 mf3;
public:
binary_compose(const Op1 & x, const Op2 & y, const Op3 & z)
: mf1(x), mf2(y), mf3(z){ }
typename Op1::result_type operator()(const typename Op2::argument_type & x) const {
return mf1(mf2(x), mf3(x));
}
};
template <class Op1, class Op2, class Op3> inline _UCXXEXPORT binary_compose<Op1, Op2, Op3>
compose2(const Op1 & fn1, const Op2 & fn2, const Op3 & fn3){
return binary_compose<Op1, Op2, Op3>(fn1, fn2, fn3);
}
#endif
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