This header provides macros that allows a signal to be emitted from a derived class of its owner. More...

This graph shows which files directly or indirectly include this file:

Classes
class	ndn::util::signal::DummyExtraArg
	(implementation detail) a filler for extra argument More...

Macros
#define	DECLARE_SIGNAL_EMIT(signalName)
	(implementation detail) declares a 'emit_signalName' method More...

#define	emitSignal(...) NDN_CXX_SIGNAL_EMIT(__VA_ARGS__, ::ndn::util::signal::DummyExtraArg())
	(implementation detail) More...

#define	NDN_CXX_SIGNAL_EMIT(signalName, ...) emit_##signalName(__VA_ARGS__)
	(implementation detail) invokes emit_signalName method More...

Detailed Description

This header provides macros that allows a signal to be emitted from a derived class of its owner.

In 'protected' section of owner class declaration, DECLARE_SIGNAL_EMIT(signalName) From a derived class of owner, this->emitSignal(signalName, arg1, arg2);

Definition in file emit.hpp.

Macro Definition Documentation

#define DECLARE_SIGNAL_EMIT ( signalName )

Value:

  template<typename ...TArgs> \
  void emit_##signalName(const TArgs&... args) \
  { \
    signalName(args...); \
  }

(implementation detail) declares a 'emit_signalName' method

Note: This macro should be used in 'protected' section so that it's accessible by derived classes.; emit_signalName method is implementation detail. Derived classes should use 'emitSignal' macro.; The name 'emit_signalName' is an intentional violation of code-style rule 2.5.; The method is declared as a template, so that the macro doesn't need argument types. But only argument types that are compatible with Signal declaration will work.

Definition at line 59 of file emit.hpp.

#define emitSignal ( ... ) NDN_CXX_SIGNAL_EMIT(__VA_ARGS__, ::ndn::util::signal::DummyExtraArg())

(implementation detail)

Definition at line 76 of file emit.hpp.

(implementation detail) invokes emit_signalName method

Note: C99 requires at least one argument to be passed in VA_ARGS, thus a DummyExtraArg is expected at the end of VA_ARGS, which will be accepted but ignored by Signal::operator() overload.

Definition at line 71 of file emit.hpp.