From b24f979569833d8eb8c3c9739fe6520d9420832b Mon Sep 17 00:00:00 2001 From: kaetemi Date: Sat, 12 Jul 2014 18:19:25 +0200 Subject: [PATCH] Add callback template class --- code/nel/include/nel/misc/callback.h | 327 ++++++++++++++++++ code/nel/samples/misc/CMakeLists.txt | 1 + code/nel/samples/misc/callback/CMakeLists.txt | 9 + code/nel/samples/misc/callback/main.cpp | 62 ++++ 4 files changed, 399 insertions(+) create mode 100644 code/nel/include/nel/misc/callback.h create mode 100644 code/nel/samples/misc/callback/CMakeLists.txt create mode 100644 code/nel/samples/misc/callback/main.cpp diff --git a/code/nel/include/nel/misc/callback.h b/code/nel/include/nel/misc/callback.h new file mode 100644 index 000000000..ca5140f6f --- /dev/null +++ b/code/nel/include/nel/misc/callback.h @@ -0,0 +1,327 @@ +/* + +Copyright (c) 2009-2014, Jan BOON +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*/ + +#ifndef NLMISC_CALLBACK_H +#define NLMISC_CALLBACK_H +#include + +// STL includes + +// NeL includes +#include + +// Project includes + +namespace NLMISC { + +#define NLMISC_CALLBACK_TEMPLATE \ +/** \ + * \brief NLMISC_CALLBACK_ARGS_CLASS \ + * \date 2009-03-03 18:09GMT \ + * \author Jan BOON \ + * Callback template \ + */ \ +template \ +class NLMISC_CALLBACK_ARGS_CLASS \ +{ \ + /* Very simple reference counting callback base */ \ + class CCallbackBase \ + { \ + public: \ + CCallbackBase() : m_RefCount(0) \ + { \ + \ + } \ + \ + virtual ~CCallbackBase() \ + { \ + nlassert(!m_RefCount); \ + } \ + \ + void refAdd() \ + { \ + ++m_RefCount; \ + } \ + \ + void refRemove() \ + { \ + --m_RefCount; \ + if (!m_RefCount) \ + delete this; \ + } \ + \ + virtual TReturn callback(NLMISC_CALLBACK_ARGS_DECL) = 0; \ + \ + virtual bool equals(const CCallbackBase *callbackBase) = 0; \ + \ + /* disable copy */ \ + CCallbackBase(const CCallbackBase &); \ + CCallbackBase &operator=(const CCallbackBase &); \ + \ + private: \ + uint m_RefCount; \ + }; \ + \ + typedef TReturn TCallbackFunction(NLMISC_CALLBACK_ARGS_DECL); \ + class CCallbackFunction : public CCallbackBase \ + { \ + public: \ + CCallbackFunction(TCallbackFunction *callbackFunction) : m_CallbackFunction(callbackFunction) \ + { \ + nlassert(m_CallbackFunction); \ + } \ + \ + virtual ~CCallbackFunction() \ + { \ + m_CallbackFunction = NULL; \ + } \ + \ + virtual TReturn callback(NLMISC_CALLBACK_ARGS_DECL) \ + { \ + return m_CallbackFunction(NLMISC_CALLBACK_ARGS_IMPL); \ + } \ + \ + virtual bool equals(const CCallbackBase *callbackBase) \ + { \ + const CCallbackFunction *callbackFunction = \ + dynamic_cast(callbackBase); \ + if (!callbackFunction) return false; \ + return m_CallbackFunction == callbackFunction->m_CallbackFunction; \ + } \ + \ + private: \ + TCallbackFunction *m_CallbackFunction; \ + }; \ + \ + template \ + class CCallbackMethod : public CCallbackBase \ + { \ + typedef TReturn (TClass::*TCallbackMethod)(NLMISC_CALLBACK_ARGS_DECL); \ + public: \ + CCallbackMethod(TClass *callbackObject, TCallbackMethod callbackMethod) : m_CallbackObject(callbackObject), m_CallbackMethod(callbackMethod) \ + { \ + nlassert(m_CallbackObject); \ + nlassert(m_CallbackMethod); \ + } \ + \ + virtual ~CCallbackMethod() \ + { \ + m_CallbackObject = NULL; \ + m_CallbackMethod = NULL; \ + } \ + \ + virtual TReturn callback(NLMISC_CALLBACK_ARGS_DECL) \ + { \ + return (m_CallbackObject->*m_CallbackMethod)(NLMISC_CALLBACK_ARGS_IMPL); \ + } \ + \ + virtual bool equals(const CCallbackBase *callbackBase) \ + { \ + const CCallbackMethod *callbackMethod = \ + dynamic_cast(callbackBase); \ + if (!callbackMethod) return false; \ + return m_CallbackObject == callbackMethod->m_CallbackObject \ + && m_CallbackMethod == callbackMethod->m_CallbackMethod; \ + } \ + \ + private: \ + TClass *m_CallbackObject; \ + TCallbackMethod m_CallbackMethod; \ + }; \ + \ +public: \ + CCallback() : m_CallbackBase(NULL) \ + { \ + \ + } \ + \ + CCallback(TCallbackFunction *callbackFunction) : m_CallbackBase(new CCallbackFunction(callbackFunction)) \ + { \ + nlassert(m_CallbackBase); \ + m_CallbackBase->refAdd(); \ + } \ + \ + template \ + CCallback(TClass *callbackObject, TReturn (TClass::*callbackMethod)(NLMISC_CALLBACK_ARGS_DECL)) : m_CallbackBase(new CCallbackMethod(callbackObject, callbackMethod)) \ + { \ + nlassert(m_CallbackBase); \ + m_CallbackBase->refAdd(); \ + } \ + \ + CCallback(const CCallback &callback) \ + { \ + m_CallbackBase = callback.m_CallbackBase; \ + if (m_CallbackBase) \ + m_CallbackBase->refAdd(); \ + } \ + \ + CCallback &operator=(const CCallback &callback) \ + { \ + if (m_CallbackBase != callback.m_CallbackBase) \ + { \ + if (m_CallbackBase) \ + m_CallbackBase->refRemove(); \ + m_CallbackBase = callback.m_CallbackBase; \ + if (m_CallbackBase) \ + m_CallbackBase->refAdd(); \ + } \ + return *this; \ + } \ + \ + ~CCallback() \ + { \ + if (m_CallbackBase) \ + { \ + m_CallbackBase->refRemove(); \ + m_CallbackBase = NULL; \ + } \ + } \ + \ + TReturn callback(NLMISC_CALLBACK_ARGS_DECL) \ + { \ + nlassert(m_CallbackBase); \ + return m_CallbackBase->callback(NLMISC_CALLBACK_ARGS_IMPL); \ + } \ + \ + TReturn operator()(NLMISC_CALLBACK_ARGS_DECL) \ + { \ + nlassert(m_CallbackBase); \ + return m_CallbackBase->callback(NLMISC_CALLBACK_ARGS_IMPL); \ + } \ + \ + bool valid() const \ + { \ + return m_CallbackBase != NULL; \ + } \ + \ + operator bool() const \ + { \ + return m_CallbackBase != NULL; \ + } \ + \ + bool operator==(const CCallback &callback) \ + { \ + return m_CallbackBase->equals(callback.m_CallbackBase); \ + } \ + \ +private: \ + CCallbackBase *m_CallbackBase; \ + \ +}; /* class CCallback */ \ + +template +class CCallback; + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME +#define NLMISC_CALLBACK_ARGS_DECL +#define NLMISC_CALLBACK_ARGS_IMPL +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA +#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA +#define NLMISC_CALLBACK_ARGS_IMPL argsA +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB +#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB +#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC +#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC +#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD +#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD +#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD, typename TArgsE +#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD, TArgsE argsE +#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD, argsE +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD, typename TArgsE, typename TArgsF +#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD, TArgsE argsE, TArgsF argsF +#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD, argsE, argsF +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL + +#define NLMISC_CALLBACK_ARGS_CLASS CCallback +#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD, typename TArgsE, typename TArgsF, typename TArgsG +#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD, TArgsE argsE, TArgsF argsF, TArgsG argsG +#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD, argsE, argsF, argsG +NLMISC_CALLBACK_TEMPLATE +#undef NLMISC_CALLBACK_ARGS_CLASS +#undef NLMISC_CALLBACK_ARGS_TYPENAME +#undef NLMISC_CALLBACK_ARGS_DECL +#undef NLMISC_CALLBACK_ARGS_IMPL +#undef NLMISC_CALLBACK_ARGS_CLASSNAME + +#undef NLMISC_CALLBACK_TEMPLATE + +} /* namespace NLMISC */ + +#endif /* #ifndef NLMISC_CALLBACK_H */ + +/* end of file */ diff --git a/code/nel/samples/misc/CMakeLists.txt b/code/nel/samples/misc/CMakeLists.txt index 753b418ae..d00a54952 100644 --- a/code/nel/samples/misc/CMakeLists.txt +++ b/code/nel/samples/misc/CMakeLists.txt @@ -1,3 +1,4 @@ +ADD_SUBDIRECTORY(callback) ADD_SUBDIRECTORY(command) ADD_SUBDIRECTORY(configfile) ADD_SUBDIRECTORY(debug) diff --git a/code/nel/samples/misc/callback/CMakeLists.txt b/code/nel/samples/misc/callback/CMakeLists.txt new file mode 100644 index 000000000..62626b0a7 --- /dev/null +++ b/code/nel/samples/misc/callback/CMakeLists.txt @@ -0,0 +1,9 @@ +FILE(GLOB SRC *.cpp) + +ADD_EXECUTABLE(nl_sample_callback ${SRC}) + +TARGET_LINK_LIBRARIES(nl_sample_callback nelmisc) +NL_DEFAULT_PROPS(nl_sample_callback "NeL, Samples, Misc: Callback") +NL_ADD_RUNTIME_FLAGS(nl_sample_callback) + +INSTALL(TARGETS nl_sample_callback RUNTIME DESTINATION ${NL_BIN_PREFIX} COMPONENT samplesmisc) diff --git a/code/nel/samples/misc/callback/main.cpp b/code/nel/samples/misc/callback/main.cpp new file mode 100644 index 000000000..157f3b259 --- /dev/null +++ b/code/nel/samples/misc/callback/main.cpp @@ -0,0 +1,62 @@ +/* + +Copyright (c) 2014, Jan BOON +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*/ + +#include +#include + +class CTestClass +{ +public: + void helloWorld(int y) + { + nldebug("Method call: %i, %i", y, x); + } + int x; +}; + +void functionCall(int i) +{ + nldebug("Function call: %i", i); +} + +typedef NLMISC::CCallback TCallbackType; + +int main(int argc, char **argv) +{ + CTestClass tc; + tc.x = 42; + + TCallbackType cbMethod = TCallbackType(&tc, &CTestClass::helloWorld); + TCallbackType cbFunction = TCallbackType(functionCall); + cbMethod(100); + cbFunction(99); + + getchar(); + + return EXIT_SUCCESS; +}