cocos2dx之一些宏的作用

/** CC_PROPERTY_READONLY is used to declare a protected variable. We can use getter to read the variable. @param varType : the type of variable. @param varName : variable name. @param funName : "get + funName" is the name of the getter. @warning : The getter is a public virtual function, you should rewrite it first. The variables and methods declared after CC_PROPERTY_READONLY are all public. If you need protected or private, please declare. */#define CC_PROPERTY_READONLY(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void);#define CC_PROPERTY_READONLY_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void);/** CC_PROPERTY is used to declare a protected variable. We can use getter to read the variable, and use the setter to change the variable. @param varType : the type of variable. @param varName : variable name. @param funName : "get + funName" is the name of the getter. "set + funName" is the name of the setter. @warning : The getter and setter are public virtual functions, you should rewrite them first. The variables and methods declared after CC_PROPERTY are all public. If you need protected or private, please declare. */#define CC_PROPERTY(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void);\public: virtual void set##funName(varType var);#define CC_PROPERTY_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void);\public: virtual void set##funName(const varType& var);/** CC_SYNTHESIZE_READONLY is used to declare a protected variable. We can use getter to read the variable. @param varType : the type of variable. @param varName : variable name. @param funName : "get + funName" is the name of the getter. @warning : The getter is a public inline function. The variables and methods declared after CC_SYNTHESIZE_READONLY are all public. If you need protected or private, please declare. */#define CC_SYNTHESIZE_READONLY(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void) const { return varName; }#define CC_SYNTHESIZE_READONLY_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void) const { return varName; }/** CC_SYNTHESIZE is used to declare a protected variable. We can use getter to read the variable, and use the setter to change the variable. @param varType : the type of variable. @param varName : variable name. @param funName : "get + funName" is the name of the getter. "set + funName" is the name of the setter. @warning : The getter and setter are public  inline functions. The variables and methods declared after CC_SYNTHESIZE are all public. If you need protected or private, please declare. */#define CC_SYNTHESIZE(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void) const { return varName; }\public: virtual void set##funName(varType var){ varName = var; }#define CC_SYNTHESIZE_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void) const { return varName; }\public: virtual void set##funName(const varType& var){ varName = var; }#define CC_SYNTHESIZE_RETAIN(varType, varName, funName)    \private: varType varName; \public: virtual varType get##funName(void) const { return varName; } \public: virtual void set##funName(varType var)   \{ \    if (varName != var) \    { \        CC_SAFE_RETAIN(var); \        CC_SAFE_RELEASE(varName); \        varName = var; \    } \} #define CC_SAFE_DELETE(p)            do { if(p) { delete (p); (p) = 0; } } while(0)#define CC_SAFE_DELETE_ARRAY(p)     do { if(p) { delete[] (p); (p) = 0; } } while(0)#define CC_SAFE_FREE(p)                do { if(p) { free(p); (p) = 0; } } while(0)#define CC_SAFE_RELEASE(p)            do { if(p) { (p)->release(); } } while(0)#define CC_SAFE_RELEASE_NULL(p)        do { if(p) { (p)->release(); (p) = 0; } } while(0)#define CC_SAFE_RETAIN(p)            do { if(p) { (p)->retain(); } } while(0)#define CC_BREAK_IF(cond)            if(cond) break#define __CCLOGWITHFUNCTION(s, ...) \    CCLog("%s : %s",__FUNCTION__, CCString::createWithFormat(s, ##__VA_ARGS__)->getCString())// cocos2d debug#if !defined(COCOS2D_DEBUG) || COCOS2D_DEBUG == 0#define CCLOG(...)       do {} while (0)#define CCLOGINFO(...)   do {} while (0)#define CCLOGERROR(...)  do {} while (0)#define CCLOGWARN(...)   do {} while (0)#elif COCOS2D_DEBUG == 1#define CCLOG(format, ...)      cocos2d::CCLog(format, ##__VA_ARGS__)#define CCLOGERROR(format,...)  cocos2d::CCLog(format, ##__VA_ARGS__)#define CCLOGINFO(format,...)   do {} while (0)#define CCLOGWARN(...) __CCLOGWITHFUNCTION(__VA_ARGS__)#elif COCOS2D_DEBUG > 1#define CCLOG(format, ...)      cocos2d::CCLog(format, ##__VA_ARGS__)#define CCLOGERROR(format,...)  cocos2d::CCLog(format, ##__VA_ARGS__)#define CCLOGINFO(format,...)   cocos2d::CCLog(format, ##__VA_ARGS__)#define CCLOGWARN(...) __CCLOGWITHFUNCTION(__VA_ARGS__)#endif // COCOS2D_DEBUG// Lua engine debug#if !defined(COCOS2D_DEBUG) || COCOS2D_DEBUG == 0 || CC_LUA_ENGINE_DEBUG == 0#define LUALOG(...)#else#define LUALOG(format, ...)     cocos2d::CCLog(format, ##__VA_ARGS__)#endif // Lua engine debug/* * only certain compilers support __attribute__((deprecated)) */#if defined(__GNUC__) && ((__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))    #define CC_DEPRECATED_ATTRIBUTE __attribute__((deprecated))#elif _MSC_VER >= 1400 //vs 2005 or higher#define CC_DEPRECATED_ATTRIBUTE __declspec(deprecated) #else    #define CC_DEPRECATED_ATTRIBUTE#endif