Qi Yao / LinkNode---test123

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CallChainOfFunctionPointersWithContext< ContextType > Class Template Reference
Public Member Functions

CallChainOfFunctionPointersWithContext< ContextType > Class Template Reference

Group one or more functions in an instance of a CallChainOfFunctionPointersWithContext, then call them in sequence using CallChainOfFunctionPointersWithContext::call(). More...

#include <CallChainOfFunctionPointersWithContext.h>

Inherits SafeBool< CallChainOfFunctionPointersWithContext< ContextType > >.

Public Member Functions

 CallChainOfFunctionPointersWithContext ()
 Create an empty chain.
pFunctionPointerWithContext_t add (void(*function)(ContextType context))
 Add a function at the front of the chain.
template<typename T >
pFunctionPointerWithContext_t add (T *tptr, void(T::*mptr)(ContextType context))
 Add a function at the front of the chain.
pFunctionPointerWithContext_t add (const FunctionPointerWithContext< ContextType > &func)
 Add a function at the front of the chain.
bool detach (const FunctionPointerWithContext< ContextType > &toDetach)
 Detach a function pointer from a callchain.
void clear (void)
 Clear the call chain (remove all functions in the chain).
void call (ContextType context)
 Call all the functions in the chain in sequence.
void call (ContextType context) const
 same as above but const
void operator() (ContextType context) const
 same as above but with function call operator
bool toBool () const
 bool conversion operation
 operator BoolType_t () const
 bool operator implementation, derived class has to provide bool toBool() const function.

Detailed Description

template<typename ContextType>
class CallChainOfFunctionPointersWithContext< ContextType >

Group one or more functions in an instance of a CallChainOfFunctionPointersWithContext, then call them in sequence using CallChainOfFunctionPointersWithContext::call().

Used mostly by the interrupt chaining code, but can be used for other purposes.

Example: 

 CallChainOfFunctionPointersWithContext<void *> chain;

 void first(void *context) {
     printf("'first' function.\n");
 }

 void second(void *context) {
     printf("'second' function.\n");
 }

 class Test {
 public:
     void f(void *context) {
         printf("A::f (class member).\n");
     }
 };

 int main() {
     Test test;

     chain.add(second);
     chain.add_front(first);
     chain.add(&test, &Test::f);
     chain.call();
 }

Definition at line 60 of file CallChainOfFunctionPointersWithContext.h.

Constructor & Destructor Documentation

CallChainOfFunctionPointersWithContext (  )

Create an empty chain.

Parameters:
size(optional) Initial size of the chain.

Definition at line 69 of file CallChainOfFunctionPointersWithContext.h.

Member Function Documentation

pFunctionPointerWithContext_t add ( void(*)(ContextType context)  function )

Add a function at the front of the chain.

Parameters:
functionA pointer to a void function.
Returns:
The function object created for 'function'.

Definition at line 84 of file CallChainOfFunctionPointersWithContext.h.

pFunctionPointerWithContext_t add ( T *  tptr,
void(T::*)(ContextType context)  mptr 
)

Add a function at the front of the chain.

Parameters:
tptrPointer to the object to call the member function on.
mptrPointer to the member function to be called.
Returns:
The function object created for 'tptr' and 'mptr'.

Definition at line 97 of file CallChainOfFunctionPointersWithContext.h.

pFunctionPointerWithContext_t add ( const FunctionPointerWithContext< ContextType > &  func )

Add a function at the front of the chain.

Parameters:
funcThe FunctionPointerWithContext to add.

Definition at line 105 of file CallChainOfFunctionPointersWithContext.h.

void call ( ContextType  context ) const

same as above but const

Definition at line 170 of file CallChainOfFunctionPointersWithContext.h.

void call ( ContextType  context )

Call all the functions in the chain in sequence.

Definition at line 163 of file CallChainOfFunctionPointersWithContext.h.

void clear ( void   )

Clear the call chain (remove all functions in the chain).

Definition at line 146 of file CallChainOfFunctionPointersWithContext.h.

bool detach ( const FunctionPointerWithContext< ContextType > &  toDetach )

Detach a function pointer from a callchain.

toDetach FunctionPointerWithContext to detach from this callchain

Returns:
true if a function pointer has been detached and false otherwise

Definition at line 116 of file CallChainOfFunctionPointersWithContext.h.

operator BoolType_t (  ) const [inherited]

bool operator implementation, derived class has to provide bool toBool() const function.

Definition at line 94 of file SafeBool.h.

void operator() ( ContextType  context ) const

same as above but with function call operator 

 void first(bool);
 void second(bool);
 
 CallChainOfFunctionPointerWithContext<bool> foo;
 
 foo.attach(first);
 foo.attach(second);
 
 // call the callchain like a function
 foo(true);

Definition at line 201 of file CallChainOfFunctionPointersWithContext.h.

bool toBool (  ) const

bool conversion operation

Definition at line 208 of file CallChainOfFunctionPointersWithContext.h.

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