290 lines
7.8 KiB
C++
290 lines
7.8 KiB
C++
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#if !defined( INCLUDED_FUNCTIONAL_H )
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#define INCLUDED_FUNCTIONAL_H
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template<typename Object, typename R, R( Object::*member ) ( )>
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class Member
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{
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public:
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typedef Object& first_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object ){
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return ( object.*member )();
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}
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};
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template<typename Object, typename R, R( Object::*member ) ( ) const>
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class ConstMember
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{
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public:
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typedef const Object& first_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object ){
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return ( object.*member )();
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}
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};
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template<typename Object, typename A1, typename R, R( Object::*member ) (A1)>
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class Member1
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{
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public:
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typedef Object& first_argument_type;
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typedef A1 second_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object, second_argument_type a1 ){
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return ( object.*member )( a1 );
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}
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};
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template<typename Object, typename A1, typename R, R( Object::*member ) (A1) const>
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class ConstMember1
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{
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public:
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typedef const Object& first_argument_type;
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typedef A1 second_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object, second_argument_type a1 ){
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return ( object.*member )( a1 );
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}
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};
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template<typename Object, typename A2, typename A3, typename R, R( Object::*member ) ( A2, A3 )>
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class Member2
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{
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public:
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typedef Object& first_argument_type;
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typedef A2 second_argument_type;
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typedef A3 third_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object, second_argument_type a2, third_argument_type a3 ){
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return ( object.*member )( a2, a3 );
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}
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};
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template<typename Object, typename A2, typename A3, typename R, R( Object::*member ) ( A2, A3 ) const>
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class ConstMember2
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{
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public:
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typedef const Object& first_argument_type;
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typedef A2 second_argument_type;
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typedef A3 third_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object, second_argument_type a2, third_argument_type a3 ){
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return ( object.*member )( a2, a3 );
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}
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};
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template<typename Object, typename A2, typename A3, typename A4, typename R, R( Object::*member ) ( A2, A3, A4 )>
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class Member3
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{
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public:
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typedef Object& first_argument_type;
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typedef A2 second_argument_type;
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typedef A3 third_argument_type;
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typedef A4 fourth_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object, second_argument_type a2, third_argument_type a3, fourth_argument_type a4 ){
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return ( object.*member )( a2, a3, a4 );
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}
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};
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template<typename Object, typename A2, typename A3, typename A4, typename R, R( Object::*member ) ( A2, A3, A4 ) const>
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class ConstMember3
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{
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public:
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typedef const Object& first_argument_type;
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typedef A2 second_argument_type;
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typedef A3 third_argument_type;
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typedef A4 fourth_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type object, second_argument_type a2, third_argument_type a3, fourth_argument_type a4 ){
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return ( object.*member )( a2, a3, a4 );
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}
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};
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template<typename R, R( *func ) ( )>
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class Function0
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{
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public:
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typedef R result_type;
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static result_type call(){
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return (func)( );
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}
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};
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template<typename A1, typename R, R( *func ) (A1)>
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class Function1
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{
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public:
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typedef A1 first_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type a1 ){
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return (func)( a1 );
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}
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};
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template<typename A1, typename A2, typename R, R( *func ) ( A1, A2 )>
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class Function2
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{
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public:
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typedef A1 first_argument_type;
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typedef A2 second_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type a1, second_argument_type a2 ){
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return (func)( a1, a2 );
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}
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};
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template<typename A1, typename A2, typename A3, typename R, R( *func ) ( A1, A2, A3 )>
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class Function3
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{
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public:
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typedef A1 first_argument_type;
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typedef A2 second_argument_type;
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typedef A3 third_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type a1, second_argument_type a2, third_argument_type a3 ){
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return (func)( a1, a2, a3 );
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}
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};
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template<typename A1, typename A2, typename A3, typename A4, typename R, R( *func ) ( A1, A2, A3, A4 )>
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class Function4
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{
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public:
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typedef A1 first_argument_type;
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typedef A2 second_argument_type;
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typedef A3 third_argument_type;
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typedef A4 fourth_argument_type;
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typedef R result_type;
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static result_type call( first_argument_type a1, second_argument_type a2, third_argument_type a3, fourth_argument_type a4 ){
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return (func)( a1, a2, a3, a4 );
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}
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};
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template<typename Caller, typename FirstArgument = void*>
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class Caller0To1
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{
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public:
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typedef FirstArgument first_argument_type;
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typedef typename Caller::result_type result_type;
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static result_type call( first_argument_type ){
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return Caller::call();
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}
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};
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template<typename Caller, typename FirstArgument = void*>
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class Caller1To2
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{
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public:
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typedef FirstArgument first_argument_type;
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typedef typename Caller::first_argument_type second_argument_type;
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typedef typename Caller::result_type result_type;
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static result_type call( first_argument_type, second_argument_type a2 ){
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return Caller::call( a2 );
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}
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};
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template<typename Caller, typename FirstArgument = void*>
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class Caller2To3
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{
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public:
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typedef FirstArgument first_argument_type;
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typedef typename Caller::first_argument_type second_argument_type;
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typedef typename Caller::second_argument_type third_argument_type;
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typedef typename Caller::result_type result_type;
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static result_type call( first_argument_type, second_argument_type a2, third_argument_type a3 ){
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return Caller::call( a2, a3 );
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}
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};
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template<typename Caller, typename FirstArgument = void*>
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class Caller3To4
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{
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public:
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typedef FirstArgument first_argument_type;
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typedef typename Caller::first_argument_type second_argument_type;
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typedef typename Caller::second_argument_type third_argument_type;
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typedef typename Caller::third_argument_type fourth_argument_type;
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typedef typename Caller::result_type result_type;
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static result_type call( first_argument_type, second_argument_type a2, third_argument_type a3, fourth_argument_type a4 ){
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return Caller::call( a2, a3, a4 );
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}
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};
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template<typename Functor>
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class FunctorInvoke
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{
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public:
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typedef typename Functor::result_type result_type;
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inline result_type operator()( Functor functor ){
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return functor();
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}
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};
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template<typename Functor>
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class Functor1Invoke
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{
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typename Functor::first_argument_type a1;
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public:
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typedef typename Functor::first_argument_type first_argument_type;
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typedef typename Functor::result_type result_type;
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Functor1Invoke( first_argument_type a1 ) : a1( a1 ){
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}
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inline result_type operator()( Functor functor ){
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return functor( a1 );
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}
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};
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template<typename Functor>
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class Functor2Invoke
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{
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typename Functor::first_argument_type a1;
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typename Functor::second_argument_type a2;
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public:
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typedef typename Functor::first_argument_type first_argument_type;
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typedef typename Functor::second_argument_type second_argument_type;
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typedef typename Functor::result_type result_type;
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Functor2Invoke( first_argument_type a1, second_argument_type a2 )
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: a1( a1 ), a2( a2 ){
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}
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inline result_type operator()( Functor functor ){
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return functor( a1, a2 );
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}
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};
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template<typename Functor>
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class Functor3Invoke
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{
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typename Functor::first_argument_type a1;
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typename Functor::second_argument_type a2;
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typename Functor::third_argument_type a3;
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public:
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typedef typename Functor::first_argument_type first_argument_type;
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typedef typename Functor::second_argument_type second_argument_type;
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typedef typename Functor::third_argument_type third_argument_type;
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typedef typename Functor::result_type result_type;
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Functor3Invoke( first_argument_type a1, second_argument_type a2, third_argument_type a3 )
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: a1( a1 ), a2( a2 ), a3( a3 ){
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}
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inline result_type operator()( Functor functor ){
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return functor( a1, a2, a3 );
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}
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};
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template<typename Other, typename True, typename False, typename Type>
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class TypeEqual
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{
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public:
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typedef False type;
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};
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template<typename Other, typename True, typename False>
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class TypeEqual<Other, True, False, Other>
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{
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public:
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typedef True type;
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};
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#endif
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