RWFunctor0Imp

RWFunctor0Imp  RWBodyBase
RWFunctor0 Implementation Classes  RWFunctor0Imp 

• Data Type and Member Function Indexes
• Package
• Header Files
• Description
• Example
• Public Typedefs
• Static Public Member Functions
• See Also

Data Types

CalleeSignature

Member Functions

make()

Functor

#include <rw/functor/RWFunctor0Imp.h>

#include <rw/functor/RWTFunctor0GImp.h>
#include <rw/functor/RWTFunctor0GA1Imp.h>
#include <rw/functor/RWTFunctor0GA2Imp.h>
#include <rw/functor/RWTFunctor0GA3Imp.h>
#include <rw/functor/RWTFunctor0MImp.h>
#include <rw/functor/RWTFunctor0MA1Imp.h>
#include <rw/functor/RWTFunctor0MA2Imp.h>
#include <rw/functor/RWTFunctor0MA3Imp.h>

A function object, or a functor, is an object that encapsulates a call to an associated global or member function. When a functor is invoked, it calls the associated function.

Class RWFunctor0Imp is the abstract base class for functor bodies that are invoked with no caller arguments and return no value. These functor classes can accept up to three client data arguments at construction time, which are passed to the function each time the functor is invoked.

The make() function is the only member of these classes that is intended to be accessed directly; it is often called through one of the rwtMakeFunctor0() convenience mechanisms. All other members must be accessed through an RWFunctor0 handle.

Each derived class name appends either a G (for global) or an M (for member), to indicate whether or not it is invoked upon an object. Static member functions use the G version since there is no object associated with the call.

The class name may also append A1, A2, or A3, to indicate that it takes callee arguments at construction time. These arguments are stored in the functor body and passed to the function at invocation time.

The eight concrete class names are:

These concrete classes are templatized on the signature of the function that is encapsulated, as well as on the signature of the functor invocation.

The template parameters describe the invocation signature of the functor and the function call it encapsulates. These parameters are:

Callee	The class type that declares a member function
DR	The return type of the function
A1	The type of the first client data argument
A2	The type of the second client data argument
A3	The type of the third client data argument

#include <rw/functor/RWTFunctor0GA1Imp.h>

void foo(int);

// Create a functor that calls foo(7):
RWFunctor0 func = RWTFunctor0GA1Imp<void,int>::make(foo,7);
// Invoke Functor
func();

typedef DR (*CalleeSignature)(void);

In RWTFunctor0GImp<DR>.

typedef DR (*CalleeSignature)(A1);

In RWTFunctor0GA1Imp<DR,A1>.

typedef DR (*CalleeSignature)(A1,A2);

In RWTFunctor0GA2Imp<DR,A1,A2>.

typedef DR (*CalleeSignature)(A1,A2,A3);

In RWTFunctor0GA3Imp<DR,A1,A2,A3>.

typedef DR (Callee::*CalleeSignature)(void);

In RWTFunctor0MImp<Callee,DR>.

typedef DR (Callee::*CalleeSignature)(A1);

In RWTFunctor0MA1Imp<Callee,DR,A1>.

typedef DR (Callee::*CalleeSignature)(A1,A2);

In RWTFunctor0MA2Imp<Callee,DR,A1,A2>.

typedef DR (Callee::*CalleeSignature)(A1,A2,A3);

In RWTFunctor0MA3Imp<Callee,DR,A1,A2,A3>.

static
RWFunctor0
RWTFunctor0GImp<DR>::
make(CalleeSignature function);

static
RWFunctor0
RWTFunctor0GA1Imp<DR,A1>::
make(CalleeSignature function,
     A1 a1);

static
RWFunctor0
RWTFunctor0GA2Imp<DR,A1,A2>::
make(CalleeSignature function,
     A1 a1,
     A2 a2);

static
RWFunctor0
RWTFunctor0GA3Imp<DR,A1,A2,A3>::
make(CalleeSignature function,
     A1 a1,
     A2 a2,
     A3 a3);

static
RWFunctor0
RWTFunctor0MImp<Callee,DR>::
make(Callee& callee,
     CalleeSignature function);

static
RWFunctor0
RWTFunctor0MA1Imp<Callee,DR,A1>::
make(Callee& callee,
     CalleeSignature function,
     A1 a1);

static
RWFunctor0
RWTFunctor0MA2Imp<Callee,DR,A1,A2>::
make(Callee& callee,
     CalleeSignature function,
     A1 a1,
     A2 a2);

static
RWFunctor0
RWTFunctor0MA3Imp<Callee,DR,A1,A2,A3>::
make(Callee& callee,
     CalleeSignature function,
     A1 a1,
     A2 a2,
     A3 a3);

These make() functions dynamically construct an instance of the corresponding implementation class and bind it to the returned RWFunctor0 handle instance.

rwtMakeFunctor0, RWFunctor0

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